TRENDING HASHTAG: #welding
Trending Posts
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Swati Lalwani
When it comes to sheet metal #fabrication, there are two primary techniques to assemble the metal, #welding and #fastening. It is crucial to carefully consider which assembly method is the best fit for your specific project.
Know More: ... moreWhen it comes to sheet metal #fabrication, there are two primary techniques to assemble the metal, #welding and #fastening. It is crucial to carefully consider which assembly method is the best fit for your specific project.
Know More: https://indgirka.com/welding-vs-fastening-choosing-the-right-assembly-method-for-your-sheet-metal-fabrication/ less
Jan 22
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Canaweld
Tig Welding
https://www.canaweld.com/tig-welders/
When precision and sleek design are needed, our wide range of TIG welders can... moreTig Welding
https://www.canaweld.com/tig-welders/
When precision and sleek design are needed, our wide range of TIG welders can give you the control necessary to accomplish professional results with a variety of parent metals. Designed with the marine, aerospace, and medical industries in mind.
#welding #weldingmachine #weldingequipment less
October 26, 2023
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txhmachine
HIGH FRENQUENCY WELDED STEEL PIPE PRODUCTION LINE #high #frequency #pipe #welding #machine Efficiency: High-frequency welding allows for continuous and high-speed production of steel pipes, enabling manufacturers to meet the demands of various... moreHIGH FRENQUENCY WELDED STEEL PIPE PRODUCTION LINE #high #frequency #pipe #welding #machine Efficiency: High-frequency welding allows for continuous and high-speed production of steel pipes, enabling manufacturers to meet the demands of various industries. https://www.txhmachine.com/products/high-frenquency-welded-steel-pipe-production-line/ less
October 23, 2023
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REMCOR TECHNOLOGY added new photos.
3 in 1 Laser Cutting Cleaning Welding Machine
https://www.remcortechnology.com/products/3-in-1-laser-cutting-cleaning-welding-machine.html
#3 #in #1 #laser #welding #machine
Remcor 3 in 1 laser welding machine and cleaning machine integrates three... more3 in 1 Laser Cutting Cleaning Welding Machine
https://www.remcortechnology.com/products/3-in-1-laser-cutting-cleaning-welding-machine.html
#3 #in #1 #laser #welding #machine
Remcor 3 in 1 laser welding machine and cleaning machine integrates three functions. One machine can get the multi-purpose, it's much more cost saving on machines, labors and spaces. Apply with a continuous laser source, which can have 3-5 times faster in welding speed and cleaning speed compared with pulse type. This fiber laser welding machine in china is widely used for precise welding and rust removal. Contact us and the latest portable laser cleaner price!
Remcor Technology is a professional supplier for laser solutions .which offers the most advanced manufacturing technology in the industry, specializing in all types of manufacturing technology for metals, aluminum, ferrous and none ferrous material fabrication. which have got high appreciations from the global customers.
The 3 in 1 fiber laser cutting welding and cleaning machine applies the latest laser technologies. Which integrate the laser cutting welding and cleaning in one system and head. Compared with the traditional welding or cleaning machine, the advantages are quite obvious for laser welding and cleaning application.
3 in 1 Laser Welding Machine Advantages
Triple functions with one system and head, Users can switch welding/cutting/cleaning mode according to the needs easily.
Super High efficiency. The welding speed can be up to 2m/min compared with traditional tig/mig 0.5m/min, which is 3-5 times faster. No need secondary polish or grinding.
Cost saving. No need certificate, normal people can do beautiful welding and cleaning finish with some practice.No need training.
Simple installation and operation. None maintenance.
More flexible in using, no need special places and machines and labors for different application.
Triple Function Welding Cutting And Cleaning In One System
Simple Installation
Only need to connect the power and gas can get to use.
Integrated Laser source and chiller
max/raycus laser source
The third generation single-module continuous fiber laser;
high-quality laser beam
Hanli chiller
Sufficient cooling, ensure the stable use
Triple Use Laser Head
Sup laser head, which is the best laser head with it's stable in using, none maintenance. Light weight and easy to handle.
Triple Use Controlling System
welding cutting and cleaning achine system
Sup laser controlling system, which is the best system with it's convinient in using. Support four contries' language. Touch screen, easy and quick to click and set. Can save and copy the technology easily. Simple to handle.
3 in 1 Laser Cutting Cleaning Welding Machine Features
Basic features: The product apply with a self-developed three-in-one control system can be flexibly switched the mode of welding, cleaning, and cutting. It sets up multiple security alarms and can be operated easily and flexibly.
More stability: All parameters are visible and the status of the whole machine will be monitored in real time, so that we can avoid problems in advance and troubleshoot and resolve issues easily to make sure that the system can work stably.
Technical parameters: technical parameters can be set, and various technical effects can be tried flexibly.
Stable parameters and high repeatability: Nozzle Air Pressure and Lens Status are determined, the power of the laser is stable, the craft parameters can be repeatable, which greatly improves efficiency
3 in 1 Laser Cutting Cleaning Welding Machine Parameter Details
Laser
Nominal output power
W
1000/1500/2000
Working mode
mm
CW/Modulated
Range of laser power
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10-100 %
Modulation frequency
Hz
50-5000
Wavelength
nm
1080
Indicated output power of red light
mW
0.5-1
Hand-held optical cable length
m
8-10
Machine Size
Length*Width*Height
mm
800*530*900
Machine
Net
kgs
200
Weight
Electricity
Working voltage
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220V single phase
Supply less
August 4, 2023
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hsjfabrication
Sheet Metal Welding
https://www.hsjfabrication.com/sheet-metal-welding/
#sheet #metal #welding
Sheet metal welding has argon arc welding, laser welding, spot welding, carbon dioxide protection welding, stainless steel sheet welding, aluminium sheet... moreSheet Metal Welding
https://www.hsjfabrication.com/sheet-metal-welding/
#sheet #metal #welding
Sheet metal welding has argon arc welding, laser welding, spot welding, carbon dioxide protection welding, stainless steel sheet welding, aluminium sheet welding manual arc welding, etc.
April 21, 2023
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oriensonmetal com
Custom Metal Laser Welding Service China #metal #laser #welding Assembly refers to the process of assembling parts according to specified technical requirements and making them qualified products after debugging and inspection. Assembly begins... moreCustom Metal Laser Welding Service China #metal #laser #welding Assembly refers to the process of assembling parts according to specified technical requirements and making them qualified products after debugging and inspection. Assembly begins with the design of assembly drawings. Products are made up of several parts and components. https://www.oriensonmetal.com/assembling-service-of-metal-laser-welding/ less
April 7, 2023
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hunkmachining com
METAL WELDING
Welding is a manufacturing process and technology to join metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. There are many types of welding. TIG(Tungsten Inert Gas), MIG (Metal, Inert... moreMETAL WELDING
Welding is a manufacturing process and technology to join metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. There are many types of welding. TIG(Tungsten Inert Gas), MIG (Metal, Inert Gas), GMAW (Gas, Metal Arc Welding), and arc welding are the most common welding methods. Hunkmachining offers welding services for various kinds of metals ranging from stainless steel and carbon steel. Our engineers will assist you with design to after sales. We are capable of designing welding tooling and custom gauge. Along with advanced welding equipment including a welding robot, we will offer the best welding solution for your project.
#metal #welding #factory
https://www.hunkmachining.com/metal-welding/ less
February 9, 2023
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ningboxihe ningboxihe
Enamel Lid Production Line
https://www.ningboxihe.com/products/enamel-lid-production-line/
#resistance #seam #welding
ENAMEL LID PRODUCTION LINE
The automatic enamel pot stainless steel belt welding and forming production line is a professional... moreEnamel Lid Production Line
https://www.ningboxihe.com/products/enamel-lid-production-line/
#resistance #seam #welding
ENAMEL LID PRODUCTION LINE
The automatic enamel pot stainless steel belt welding and forming production line is a professional equipment specially built for enamel pot manufacturers. The equipment is designed for continuous laser welding of the C type stainless steel ring of the enamel pot. After welding, it is grasped by a mechanical arm, and then automatically rolled Machine hemming and unloading. So as to achieve the automatic production of welding and forming. less
November 23, 2022
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ningboxihe ningboxihe
Dust Cover Welding Machine
https://www.ningboxihe.com/products/dust-cover-welding-machine/
#steel #laser #welding #machine
DUST COVER WELDING MACHINE
The equipment is a special welding equipment designed for the brake dust cover. It can be done... moreDust Cover Welding Machine
https://www.ningboxihe.com/products/dust-cover-welding-machine/
#steel #laser #welding #machine
DUST COVER WELDING MACHINE
The equipment is a special welding equipment designed for the brake dust cover. It can be done manually only by installing the product.The equipment adopts two 250 gas shielded welding machines from Japan's Panasonic brand. The welding machine has the function of timed spot welding, which ensures 100% of the size of the welding spot, and has very little welding spatter. less
November 23, 2022
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rishengmagnets
Welding Magnets
https://www.rishengmagnets.com/products/welding-magnets.html
#welding #earth #magnet
Welding magnets (also called Magnetic welding holders, clamps, or backers) consist of steel in different shapes and strong magnets, they are used to... moreWelding Magnets
https://www.rishengmagnets.com/products/welding-magnets.html
#welding #earth #magnet
Welding magnets (also called Magnetic welding holders, clamps, or backers) consist of steel in different shapes and strong magnets, they are used to connect two ferrous metal objects together and hold them at a certain angle, in order to make sure the workers can weld them accurately and greatly improve the efficiency. less
November 23, 2021
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Yang Jun
Pre-weld heat treatment is a common process to reduce welding cracks and reduce welding stress. For welding with certain process requirements, the welding seam and surrounding areas need to be preheated before welding. And this preheating before welding... morePre-weld heat treatment is a common process to reduce welding cracks and reduce welding stress. For welding with certain process requirements, the welding seam and surrounding areas need to be preheated before welding. And this preheating before welding job is always done at the outside field. Thus, there actually exist great demands in the industry for a small-sized flexible pre-heat treatment in welding. More specically, the tool for this kind of preheat treatment must be equipped with an air cooling system ( so that it will not need a water source), a flexible heating cable for different sizes/shapes workpieces, and exact control of the temperature and the heating time.
#pre #heat #treatment #in #welding
https://www.cn-jkz.com/induction-preheating-machines.html less
November 21, 2021
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etcn business
Welding #flux #welding #sheet #metal Medical supplies, laser welded forming, beautiful appearance, firm, flat welding seam, no welding rod, and flux welding sheet metal is needed. As a professional welding and metal fabrication company, ETCN also... moreWelding #flux #welding #sheet #metal Medical supplies, laser welded forming, beautiful appearance, firm, flat welding seam, no welding rod, and flux welding sheet metal is needed. As a professional welding and metal fabrication company, ETCN also provides our clients with weldable plastic sheet: welding copper sheet, welding thin stainless steel sheets, PVC sheet, tubesheet or thin sheet welding services.
https://www.etcnbusiness.com/machining-service/welding/ less
September 27, 2021
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tjkmachinery group
The use of CNC automatic production equipment to complete the high-speed welding of steel mesh, mesh automatically placed neatly, automatic transmission.
① Wire Mesh Welding Machine has advanced technology is introduced from Europe, lots of parts have... moreThe use of CNC automatic production equipment to complete the high-speed welding of steel mesh, mesh automatically placed neatly, automatic transmission.
① Wire Mesh Welding Machine has advanced technology is introduced from Europe, lots of parts have patent for invention, the high efficiency also high endurance and humane designings are safe and reliable;
② High precision of PLC control, LCD display is easy for operating, have mighty graphics library, it is able to communicate with management software;
③ Wire Mesh Welding Machine is workable with wire diameter 3-12, speed 60-90m/min, maximum mesh width 4000mm;
#wire #mesh #welding #line
https://www.tjkmachinery-group.com/products/wire-mesh-welding-machine/ less
September 26, 2021
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Sue Wang
H-Beam Welding Line
#h #beam #welding
H-beam welding machine consists of an assembling machine, front welding machine, turn-over device, back welding... moreH-Beam Welding Line
#h #beam #welding
H-beam welding machine consists of an assembling machine, front welding machine, turn-over device, back welding machine and the transmission conveyors. It is used to assemble the H-beam,180°turn-over and transmit, etc. The annual welding capacity is 8000 tons. The Max welding speed can reach about 2m/min. Regularly, we adopt Lincoln welding machine (DC-1000) and NA-5 control system.
JH-150A welding line for H-profile steel is a wonderful technical product that integrates mechanical, electric, and pneumatic technologies. The machine, using advanced technology of single-arc double-wire welding, greatly increases the production efficiency.
The half line and whole line of H-Beam Welding Line Machine are different.
https://www.jinggongmachine.com/products/h-beam-welding-line.html less
July 22, 2021
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Sue Wang
Gantry Submerged Arc Welding Machine
#gantry #welding #machine
The gantry welding machine can replace the cantilever submerged arc welding machine, and can choose unipolar or multipolar... moreGantry Submerged Arc Welding Machine
#gantry #welding #machine
The gantry welding machine can replace the cantilever submerged arc welding machine, and can choose unipolar or multipolar welding, the landfill high efficiency. Also according to different customer requirements, specifically for the "H" or "T" type steel to design the replaceable welding gun parts and adopt the welding type of ship to ensure implementation of the "H" or "T" Type steel welding.
The special feature about the machine is twin-arc twin-wire welding method. The welding speed is from 0.24～2.4m/min, and the return speed is 2.5m/ min. What's more, you can choose between Lincoln welder or an alternative famous Chinese welding brand.
It has a simple structure, reliable use, a high degree of automation and easy maintenance and so on.
https://www.jinggongmachine.com/products/gantry-submerged-arc-welding-machine.html less
July 22, 2021
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xlnt chillers
Bao-300 portable fume extractor is a small portable fume purifier with small volume, light weight and easy to move. It is suitable for welding working scenes with relatively little smoke and need to be moved. It is especially suitable for argon arc... moreBao-300 portable fume extractor is a small portable fume purifier with small volume, light weight and easy to move. It is suitable for welding working scenes with relatively little smoke and need to be moved. It is especially suitable for argon arc welding, gas shielded welding and other workplaces. Bao-300 is equipped with air volume regulating valve, which can adjust air volume intelligently. Bao-300 filter element can be replaced separately, which is more convenient for maintenance and replacement.
Advantage Of Bao-300 Portable Fume Extractor
Imported brush-less motor, high speed, low noise, stable performance and long service life.
#portable #welding #fume #extractor
https://www.xlntchillers.com/products/bao-300-portable-fume-extractor.html less
June 17, 2021
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xlnt chillers
Bao-1500 mobile welding fume extractor is suitable for filtering fume in single station such as manual arc welding, argon arc welding and secondary welding. When bao-1500 works, the high-performance fan produces negative pressure, which sucks smoke and... moreBao-1500 mobile welding fume extractor is suitable for filtering fume in single station such as manual arc welding, argon arc welding and secondary welding. When bao-1500 works, the high-performance fan produces negative pressure, which sucks smoke and waste gas into the filter. The high-efficiency filter element made of imported material can be used for indoor or outdoor emission after four-stage purification. The primary filter element can be reused after blowing off the dust with compressed air.
Advantage Of Bao-1500 Mobile Welding Fume Extractor
Imported electrical components, professional control circuit, safe and reliable.
A circular exhaust outlet can be added to the exhaust outlet directly through the pipe or connected to the central smoke exhaust system.
#mobile #welding #fume #extractor
https://www.xlntchillers.com/products/bao-1500-mobile-welding-fume-extractor.html less
June 17, 2021
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xlnt chillers
Bao-1000 welding fume extraction systems are used to purify the fume generated during welding of metal materials. Bao-1000 is equipped with a high-power fan with high suction and low operating noise. It has a four-stage high-capacity filter to ensure... moreBao-1000 welding fume extraction systems are used to purify the fume generated during welding of metal materials. Bao-1000 is equipped with a high-power fan with high suction and low operating noise. It has a four-stage high-capacity filter to ensure high-efficiency purification of dust, odor and harmful gases. The filtration efficiency of bao-1000 can reach 99.7%, which can filter 0.3 micron micro dust (Laboratory) and meet the indoor emission standard.
Advantage Of Bao-1000 Welding Fume Extraction Systems
It can filter 0.3 micron dust.
Imported motor, stable performance, low noise, can work continuously for 24 hours.
#welding #fume #extraction #system
https://www.xlntchillers.com/products/bao-1000-welding-fume-extraction-systems.html less
June 17, 2021
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xlnt chillers
Xintchillers is a professional manufacturer in the water chiller industry and fume extractor industry. Our products include Industrial water chiller, welding water cooler, fume extractor. We have more than ten years of experience in manufacturing and... moreXintchillers is a professional manufacturer in the water chiller industry and fume extractor industry. Our products include Industrial water chiller, welding water cooler, fume extractor. We have more than ten years of experience in manufacturing and developing various chillers and soot purifiers. High-quality manufacturing equipment (cooperating with world-renowned suppliers such as Panasonic), sophisticated R&D technology and excellent services have provided professional services to more than 100 large and medium-sized customers around the world. Our service targets include end-users, OEMs, suppliers, distributors, etc. in multiple industries.
#welding #water #cooler
https://www.xlntchillers.com/products/ less
June 17, 2021
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xlnt chillers
WRC-500 25L Welding chiller has a water tank capacity of 25L. The water tank has a large capacity and a fast cooling speed. It is mainly used to cool high-power argon arc welding machine welding guns, plasma cutting machine cutting guns and other... moreWRC-500 25L Welding chiller has a water tank capacity of 25L. The water tank has a large capacity and a fast cooling speed. It is mainly used to cool high-power argon arc welding machine welding guns, plasma cutting machine cutting guns and other industrial welding equipment. Special selection of stainless steel water pump for welding machine, high-quality heat-resistant motor, extremely low failure rate, not easy to rust, not easy to accumulate scale; wind tunnel type heat dissipation design, light weight; new leak-proof water inlet and outlet joints; the above features can improve welding efficiency. Thereby extending the service life of welding equipment. The front universal wheel design is more convenient to move.
Advantage Of WRC-500 25L Welding Chiller
Use anti-corrosion and anti-rust radiator and metal fan to make the best heat dissipation effect.
#welding #chiller
https://www.xlntchillers.com/products/wrc-500-25l-welding-chiller.html less
June 17, 2021
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plas welding
Plastic Pipe Welding & Cutting Machines in Water/Plumbing
#pipe #welding #machine #manufacturers
With the rapid economic development, more and more new materials are used in water supply and drainage projects, such as PE, PPR and HDPE pipeline... morePlastic Pipe Welding & Cutting Machines in Water/Plumbing
#pipe #welding #machine #manufacturers
With the rapid economic development, more and more new materials are used in water supply and drainage projects, such as PE, PPR and HDPE pipeline materials. The PE pipe can withstand the corrosion of a variety of chemical media, does not require anti-corrosion treatment, and is very suitable for water supply and drainage projects. The Butt welding machine came into being as a special machine for cutting and welding PE pipes.
Our HDPE Pipes welding machine suit to fabricating the equal welding fittings or welding HDPE pipes and used to the worksite for drainage works. Which have been used by many water service companies. less
May 18, 2021
Plaswelding's plastic pipe/tube welding & cutting machines are applied in dealing with water and plumbing pipe. Different types of welding & cutting machine for your selection. Ask for More Details Now!
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plas welding
PPR Pipe Welding Machine
#pipe #welding #machine #manufacturers
Compared with the traditional cast iron pipe, galvanized steel pipe, cement pipe and other pipes, PPR pipe has the advantages of saving energy and saving materials,... morePPR Pipe Welding Machine
#pipe #welding #machine #manufacturers
Compared with the traditional cast iron pipe, galvanized steel pipe, cement pipe and other pipes, PPR pipe has the advantages of saving energy and saving materials, environmental protection, lightweight and high strength, corrosion resistance, a smooth inner wall without scaling, simple construction and maintenance, long service life, etc.
It is widely used in construction, municipal, industrial and agricultural fields such as water supply and drainage, urban and rural water supply and drainage, urban gas, electric power and optical cable sheath, industrial fluid transportation, agricultural irrigation and so on. less
May 18, 2021
Plaswelding's welding & cutting saw machine can be applied in PPR Pipe. Types of quality PPR pipe fusion jointing & cutting machine for sale with attractive price. Call Our Experts Today!
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plas welding
HDPE Pipe Welding Machine
#pipe #welding #machine #manufacturers
HDPE pipe is an engineering pipe material. HDPE pipe must bear certain pressure. Usually, PE resin with large molecular weight and good mechanical properties, such as... moreHDPE Pipe Welding Machine
#pipe #welding #machine #manufacturers
HDPE pipe is an engineering pipe material. HDPE pipe must bear certain pressure. Usually, PE resin with large molecular weight and good mechanical properties, such as HDPE resin, should be selected. The strength is 9 times that of the PE pipe. Among all engineering plastics, HDPE has the highest wear resistance. HDPE pipe is a new generation of traditional steel pipe and PVC drinking water pipe. Ordinary PE pipe is not good.
HDPE pipes are mainly used for: water supply system of municipal engineering, indoor water supply system of buildings, outdoor buried water supply system and buried water supply system of the residential area and plant area, repair of old pipelines, pipeline system of water treatment engineering, industrial water pipes in the garden, irrigation and other fields, etc. less
May 18, 2021
Plaswelding's welding & cutting saw machine can be applied in HDPE Pipe. Types of quality hdpe pipe fusion jointing & cutting machine for sale with attractive price. Call Our Experts Today!
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earthrodchina
Exothermic Welding Mold #exothermic #welding #mould Beisuda CCS Grounding Conductors Making Process
Customer order
Report plan
purchase
Wire (inspection, warehousing)
Qualified products on the machine
Oxidation
Steam... moreExothermic Welding Mold #exothermic #welding #mould Beisuda CCS Grounding Conductors Making Process
Customer order
Report plan
purchase
Wire (inspection, warehousing)
Qualified products on the machine
Oxidation
Steam washing
Cleaning
Pre-plating
Steam washing
Cleaning
Main plating
Steam washing
Passivation
Drying
Inspection
Weighting
Drawing
Inspection
Warehousing
Inspection
Transportation
Customer inspection
Order completion and delivery
FAQ
faqHow deep should a grounding rod be II
faqHow to Prepare High Conductivity Copper
faqHow deep should a grounding rod be I
faqHow much is a grounding rod?
faqThe Difference Between Ground Line and Neutral Line
faqHow do you install a lon grounding rod?
faqGrounding Device and Grounding Electrode Conductor
faqHeat-released Jointing
http://www.earthrodchina.com/products/exothermic-welding-mold1.html less
March 31, 2021
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earthrodchina
Exothermic Welding Flux #exothermic #welding #powder #price Exothermic welding Powder Specification and Model
Product name Model No Weight Note
Exothermic welding Powder BSD-EW-F15 15g Exothermic welidng series products including molds,exothermic... moreExothermic Welding Flux #exothermic #welding #powder #price Exothermic welding Powder Specification and Model
Product name Model No Weight Note
Exothermic welding Powder BSD-EW-F15 15g Exothermic welidng series products including molds,exothermic welding powder,
starting powder,mold clamp,igniters,tool boxes,cleaning tools and etc.
BSD-EW-F25 25g
BSD-EW-F45 45g
BSD-EW-F65 65g
BSD-EW-F90 90g
BSD-EW-F115 115g
BSD-EW-F150 150g
BSD-EW-F200 200g
BSD-EW-F250 250g
BSD-EW-F300 300g
Welding Mold BSD-EW-MS Each
BSD-EW-CS BSD-EW-CS each
http://www.earthrodchina.com/products/exothermic-welding-flux1.html less
March 31, 2021
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earthrodchina
CCS Round Wire #copper #clad #welding #wire 0.8 Series CCS Round Wire
Origin of new material development
0.8mm series copper-clad round wire is a new type of material developed by our Company to replace pure copper. Because it has the advantages of... moreCCS Round Wire #copper #clad #welding #wire 0.8 Series CCS Round Wire
Origin of new material development
0.8mm series copper-clad round wire is a new type of material developed by our Company to replace pure copper. Because it has the advantages of high strength, low price, high corrosion resistance and high conductivity of copper, and meanwhile its comprehensive performance is high and its cost is more economical than pure copper grounding device, it has been widely used in UHV lines, petrochemical industry, nuclear power and high-speed railway, especially in key projects in recent years.
Copper-clad steel:
The material in which the surface of a steel core is uniformly coated with copper includes copper-clad steel bars (for vertical grounding electrode only), copper-clad steel tape, and copper-clad steel wires (including round wires and stranded wires). According to the production process, it can be divided into continuous casting copper-clad steel and electroplating copper-clad steel.
CCS Round Wire
Development of copper-clad steel grounding device
With the increasing voltage level of power lines and the increasing capacity of the system, higher requirements are put forward for the safety and reliability of grounding devices.
The traditional method in foreign countries is to use pure copper as the grounding material, but pure copper is expensive and it is a strategic resource, which is not suitable for being massively used as grounding devices in China. From 1910 to 1955, National Bureau of Standards (NBS) conducted corrosion resistance studies of grounding bodies. 36,500 samples collected at 128 test sites throughout the United States represented 333 metal materials consisting of iron, non-ferrous metals and protective coatings, respectively. The test results show that only steel bars and stainless steel bars with copper plating thickness over 0.5mm can be accepted.
In addition, continue the statistical data of 8 to 30 years and take the test results of 43 copper samples in different soils, 41 of which were calculated, to get the 0.17mm average pitting depth of 30 years. Therefore, some international standards have determined the thickness of copper coating of copper-clad steel material to be at least 0.25 mm. Considering the hard friction during construction, it is suggested that the thickness of copper coating be defined as 0.5-0.8 mm.
In China, copper clad(copperweld) steel materials are widely used in substation grounding grids in areas with high soil resistivity. Because of the characteristics of UHV project, such as high voltage level, large capacity and short power cut window period, combined with the corrosion intensity of groundwater in the area, copper-clad steel grounding devices have been applied in UHV lines and many UHV lines in China use copper-clad steel materials as grounding bodies.
Development of copper-clad steel grounding device
Comparison between copper-clad steel grounding and traditional hot-dip galvanized steel grounding device
1. Corrosion rate comparision
Annual corrosion rate of grounding materials in some place of Beijing and Tianjin
Material Beijing Liangxiang Tianjing Dongli
Stainless stell 0.002 0.003
Pure coper 0.001 0.001
Copper-cald stell 0.001 0.001
Galvanized steel 0.176 0.2
The test results show that galvanized steel has the most serious corrosion and its corrosion rate is more than 50 times higher than that of pure copper; the corrosion degree of stainless steel is much lower than that of pure copper and copper-clad steel, showing good corrosion resistance; as a copper-steel composite material, the self-corrosion potential of copper-clad steel in soil is basically the same as that of pure copper, and its corrosion rate is the same as that of pure copper; the corrosion rate of the electroplated copper-clad steel with thinner coating is higher than that of the continuous casting copper-clad steel with thicker coating.
2. Analysis and comparison of physical performance in short circuit
If the conductivity of copper were 100% and the conductivity of standard 1020 steel were only 10.8%, the conductivity of copper would be about 10 times that of steel. However, the conductivity of the 30% conductivity copper-clad round wire would be 30%, and the conductivity of the 40% conductivity copper-clad round wire would be 40%, which would be far better than the steel grounding body. Especially under skin effect, the conductivity of copper-plated strands at high frequencies would be much better than that of steel, that is, the conductivity of copper grounding body would be better than that of steel grounding body. The melting point of copper is 1083℃ and the maximum allowable temperature during short circuit is 450℃ ; the melting point of steel is 1510℃ and the maximum allowable temperature during short circuit is 400℃. Therefore, when the grounding body has the same cross section, the copper-clad steel grounding material has better thermal stability.
3. Economic comparison
According to Appendix D of Technical Conditions for Copper-clad Steel for Grounding in Electrical Engineering, the corrosion rates of copper clad steel in different soils are calculated according to the reference values in table. Corrosion rate of pure copper under different soil corrosion grades (mm/a)
Soil corrosion grade La extremely weak corrosion Lb Weak corrosion II Strong corrosion III Extremely strong corrosion
Corrosion rate 0.0004-0.001 0.001-0.004 0.004-0.007 0.007-0.021
The 0.8mm copper plating thickness is enough to meet the requirement of 60 years of service under the grade of III extremely strong corrosion.
The corrosion rate of galvanized steel is nearly 50 times that of copper-clad steel under the same soil conditions, and the grounding body should be overhauled after being used for 3-5 years.
The State Grid has accounted the UHV tower according to the drawings: after the investigation of the market price of material during the construction, the market price of the copper-clad-steel grounding body is calculated at RMB 20 /m, the market price of φ12 galvanized-steel round steel grounding body is calculated at RMB 6 /m and the grounding body laying is calculated according to the grounding construction drawing. During the 30-year whole life cycle, galvanized steel is overhauled every 5 years, of which the cost of material is RMB 20 /m for copper-clad steel and RMB 36/m for galvanized steel, that is, only material cost can be reduced by 80%. Galvanized steel can be overhauled and replaced six times. If the construction cost is RMB 70 /m3 for earthwork and stone works and each base tower is calculated by 23 m3 for excavation, RMB 9660 per base tower will be saved.
Copper-clad steel construction
The horizontal laying of the copper-clad steel grounding device is the same as that of the ordinary galvanized round steel, where only the connection method is changed to hot-melt welding, which has reduced the contact resistance between the joints and is more conducive to the release of lightning current.
Copper-clad steel constructionCopper-clad steel construction
Exothermic welding, also known as "aluminum heat welding", is a simple, high-efficiency, high-quality metal joining process that has been mass-produced and used in China in recent years. Exothermic welding uses chemical reaction heat of metal compounds as heat source and through superheated (reduced) molten metal or indirect heating, a certain shape and size of the melted joint is formed in the cavity of the special graphite mould, which meets the engineering requirements, and finally through cooling and condensation, the welding process is realized. At present, exothermic welding has generally replaced the mechanical connection between metals in the past.
Advantages of copper-clad steel
1.It has strong corrosion resistance and will not be disjointed, warped or cracked. The corrosion in the grounding body of the grounding grid is reduced, which has improved the overall operational safety of the equipment;
2. It has good electrical conductivity and stable electrical performance;
3. The copper layer and the steel bar achieve molecular bonding, and the grounding bar will not break down when it penetrates into the soil.
4. The copper-clad-steel grounding material used has high efficiency of reducing the resistance, and the length of the horizontal grounding body is reduced by 1/3 for the design of the high-resistance section, greatly reducing the excavation amount of the earthwork;
5. The design and use of exothermic welding technology is very suitable for the needs of field construction, greatly improving work efficiency and effectively shortening the construction period.
Performance parameters of copper-clad steel wire
Copper layer thickness:0.8mm; tensile strength: greater than 500MPa; copper-clad steel bent 180° without peeling off copper layer.
Specification of 0.8mm series copper-clad round steel: Soft copper-clad round bars are generally packaged in hanks or rolls, 100 meters per roll, easy to transport, suitable for laying of large grounding grids and horizontal grounding lines.
Usage:key projects, large grounding grids and horizontal grounding wires in industries with higher lightning protection requirements, etc.
Model No. Dimeter(mm) Copper Layer(mm)
BSD-GW-R10S 10 0.8/0.5/0.25
BSD-GW-R12S 12 0.8/0.5/0.25
BSD-GW-R14S 14 0.8/0.5/0.25
Note:
1. If the thickness of copper layer is required to be 1 mm, please contact us directly.
2. We undertake custom-made zinc-clad steel ground rod and round steel.
Production method of copper clad steelProduction method of copper clad steel
Production method of copper clad steel technical field The invention specifically relates to a production method of copper clad steel.
Background technologycopper clad steel
The conductivity of existing copper clad steel products is not good, far inferior to that of pure copper products. The reason is that the overall product performance is insufficient when copper is coated on steel materials in the process.
Summary of the invention
In view of the above technical problems, the invention provides a production method of copper clad steel.
A copper clad steel production method comprises the following steps:
A. Surface treatment of steel wire;
B. Stripping and wire drawing of the treated steel wire;
C. Straightening and polishing the treated steel wire.
D. Heating the treated steel wire to 300-400 degrees.
E. Melting copper into water in high temperature furnace.
F. The steel wire in step D is coated with copper water in step E and then cold crystallized to form the product.
Preferably, the steel wire surface treatment in step A is a mechanical grinding treatment without water contamination.
The invention provides a production method of copper clad steel. The conductivity of the product obtained by the method is close to that of the pure copper product, the cost is greatly reduced, and the service life is prolonged.
http://www.earthrodchina.com/products/ccs-round-wire.html less
March 31, 2021
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