Electrodes For Resistance Welding
Overview
Electrodes for Resistance Welding is a composite electrode that combines the high melting point and high hardness of tungsten with the high electrical conductivity and high thermal conductivity of copper. It can be used in EDM, resistance welding, electronic packaging, and other fields.
Characteristics
Excellent processing performance
The thermal expansion coefficient is low, and various shapes can be manufactured with high precision using inlay techniques (such as pressing, powder metallurgy sintering, etc.), and the dimensional error is also small.
Strong high-temperature performance
It has a high melting point and good thermal conductivity, reaching 180–220 W/(m·K). This allows for rapid heat dissipation and results in extremely low electrode loss, significantly extending the service life of the electrode.
Excellent electrical conductivity
During discharge, the arc is more stable, meeting signal transmission requirements. Additionally, it provides strong electromagnetic shielding and anti-interference capabilities, making it especially suitable for high-temperature and high-current-density environments.
Outstanding welded advantages
It also exhibits high hardness, strong resistance to high-temperature softening, and does not easily adhere to or weld with the workpiece. This leads to high welding efficiency, excellent resistance to thermal shock, and strong resistance to electrode ablation.
Application
Resistance Welding Electrodes are widely used in various occasions that require auxiliary resistance welding, such as automobile manufacturing, electronic equipment production, pipeline connection, and precision machining.
Suitable for the connection of various metal materials, such as steel, aluminum, copper, etc. Welding electrodes made of tungsten copper and the like are particularly suitable for welding highly conductive materials such as copper.
- Spot weld: Resistance Spot Welding Electrode is suitable for the welding of carbon steel plates and stainless steel plates, as well as high-carbon steel materials, automotive parts, stainless steel products, low-voltage electrical appliances, hardware lighting, kitchen utensils, small household appliances, small hardware, etc.
- Projection weld: Suitable for the welding of nuts, screw parts, wire crosses, pipes, plate T-shaped parts, etc.
- Butt weld: Suitable for the welding of various carbon steels, low-alloy steels, stainless steels, etc.
Electrodes For Resistance Welding Dimension
|
Grade |
W55Cu45, W75Cu25, W80Cu20, W90Cu10 |
|
Size |
Customized |
|
Density |
14.95-16.75g/cm3 |
|
Shape |
rod, bar, cylinder, ingot |
|
Surface |
Polished, Bright, Chemical Cleaning |
|
Standard |
ASTM B702, DIN, GB |
|
Certification |
ISO 9001 |
Use of Tip Spot Welding with the different composition contents:
- 45% Cu and 55% W: has excellent wear resistance and strength, used for flash welding and butt welding electrodes, suitable for applications requiring high heat resistance, higher electrical and/or thermal conductivity, high plasticity and low thermal expansion
- 25% Cu and 75% W: can be used for projection welding electrodes, flash welding and butt welding electrodes, slightly expanded and seam welding sleeves, and spot welding of low conductivity steel. It is also widely used for chip carriers, substrates, flanges, and frames of power semiconductor devices.
- 20% Cu and 80% W: Has higher hardness and is usually used for heavy projection welding electrodes, electroplated and forged electrode faces for stamped studs and rivets, and transverse wire welding.
Technology
1. Powder metallurgy method
Principle: Through the mixing, pressing, sintering, and infiltration of tungsten powder and copper powder, a tungsten skeleton-copper-filled composite material structure is formed.
Advantages: The ratio can be precisely controlled to avoid the volatilization of copper during high-temperature smelting, which is suitable for the preparation of electrodes with high tungsten content (such as W80-Cu20).
2. Infiltration method
Principle: First, sinter tungsten powder to form a porous skeleton, and then infiltrate molten copper into the pores to improve the density and conductivity of the material.
Advantages: Electrodes with a density of >95% can be prepared, which is suitable for EDM under high current density.
3. EDM and post-processing
Principle: Using the conductivity of the electrode material, complex shapes are processed through EDM corrosion, and the surface may need to be ground and polished later.
Advantages: Suitable for the molding of precision electrodes, with a dimensional accuracy of up to ±0.01mm.
4. Mechanical inlay method
Principle: Fix the tungsten block and the copper block together through mechanical processing (such as cutting and drilling), which is common in simple structure electrodes.
Advantages: Simple process and low cost, but low interface bonding strength, suitable for low load conditions.
Process
① Prepare high-purity tungsten powder and copper powder and mix them in proportion.
② Press and shape, sinter at high temperature to ensure the density of the tungsten skeleton.
③ Normal pressure or vacuum infiltration treatment, copper infiltrates into the pores of the tungsten skeleton to improve density.
④ Wire cutting to process the electrode shape, grinding and polishing to remove burrs.
⑤ Comprehensive performance testing and quality control.
Video
Pictures
Why choose us
24-Hour Response Service
Upon receiving customer inquiries, we promptly and accurately ascertain the product they require, ensuring there are no issues related to time differences. Our customer service team operates around the clock, ensuring that no matter where our customers are located, they receive the same level of attention and service.
01
Excellent Customized Services
We can customize production to match the customer's drawings, and we are also capable of designing and processing in accordance with the customer's requirements. Furthermore, our team ensures that every customized product meets or exceeds industry standards, maintaining the highest levels of functionality and reliability.
02
Global Shipping
We have established long-term cooperation with many international logistics companies, such as DHL, UPS, FedEx, or SF Express, and can deliver products to customers on time by land or air transportation.
03
Professional equipment and team
We have a technical team composed of experts who are proficient in the knowledge of protective materials, and we also have advanced production and testing equipment, such as cutting machines, mechanical lathes, surface treatment equipment, radiation dose detectors, etc.
04
Efficient after-sales service
Our customer service team is dedicated to ensuring that every customer's experience with our products is positive and hassle-free. We understand that the integrity of the product is paramount, and we take every reported issue seriously. Upon notification of any problem,
05
Case
Electrodes For Resistance Welding, Tungsten Faced Copper Welding Electrode To France
Tungsten copper electrodes are one of our company's most popular non-ferrous metal products, widely sold to South Korea, Thailand, Vietnam, Singapore, Brazil, the United States, Italy, Switzerland, and other countries. Recently, a French customer signed an order with us and ordered a batch of Tungsten-Faced Copper Welding Electrodes from us for welding their mechanical equipment. Our prices are competitive compared to other suppliers, and we have advanced production equipment and technicians. We also meet customers' customized requirements regarding size specifications and order quantities. We will provide the best after-sales service if there are any problems, such as dimensional non-compliance and surface defects, after receiving the product.
Product Qualification
FANMETAL TECH CO LTD is mainly engaged in the production and sales of tungsten alloy, Molybdenum alloy, Cemented carbide, sputtering target, titanium alloy, tantalum, zirconium, Iridium, and Cobalt alloy. FANMETAL's main production, technical, and sales workers have over 10 years of experience in the field.
FAQ
Q: Are you a manufacturer or trading company?
A: We are a manufacturer with professional technology and several years of production experience, and we can provide customers with various high-quality products.
Q: How do we order our products?
Q: What are your terms of payment?
A: Payment<=1000 USD, 100% in advance. Payment>=1000 USD, 30% T/T in advance ba lance before sshipment If you have another question, pls feel free to contact us as below.
Q: Wh at's your delivery time?
A O ur shipping method is mainly by air or sea. After the product is finished, we will use wood, plastic, or carton boxes for tight packaging, and also put some soft materials to prevent product damage. We will deliver it to you as soon as possible, within 20-30 days.
Q: What metal products can you offer?
A:In addition to tungsten and tungsten alloy products, we can also produce molybdenum
alloy products, nickel alloy products, titanium alloy products, sputtering targets, zirconium produce, ts, and other precious metal products. If you are interested in these products, you can click on our homepage to inquire about relevant information. If you need customized products, you can also contact us by email.
Q: I can't find the product in your catalogue. Can you give me this product's information?
A: Our catalogue shows most of our products, but not a. Justlet us know what product you need and how many you want.I f we do not have it in stock, we can also design and make a new mould to produce it. For your reference, making an ordinary mold will take about 3-5 days.
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