Description
Carbide Punches And Dies are core components in the field of metal stamping processing. They are made of carbide as the base material through precision machining. Its core function is to match the connector mold to complete continuous stamping, forming, cutting and other processes. Compared with traditional high-speed steel or tool steel molds, tungsten steel punches can maintain dimensional stability and surface finish under extreme processing conditions due to their high hardness, wear resistance, heat resistance and corrosion resistance, significantly improving the mold life and production efficiency.
Product Features
1. High hardness and wear resistance
The hardness of tungsten steel can reach HRA 89-92 (close to diamond), which is 3-5 times that of ordinary high-speed steel. Even at a high temperature of 500℃, the hardness is almost unchanged; at 1000℃, it still maintains high hardness, completely solving the wear problem of traditional molds caused by high temperature softening, and the life is increased by 5-10 times.
2. Impact toughness
By optimizing the tungsten steel formula and heat treatment process, the product has both high strength and toughness, can withstand the instantaneous impact force during high-speed stamping, avoid the risk of cracking or breaking, and is especially suitable for the processing of high-strength materials such as stainless steel and titanium alloy.
3. Heat and corrosion resistance
Tungsten steel has excellent chemical stability in acidic and alkaline environments. With its low thermal expansion coefficient, it can maintain dimensional accuracy and reduce the frequency of downtime maintenance even if it is in a high temperature, high humidity or corrosive gas environment for a long time.
4. High-precision processing
Using CNC grinding and polishing technology, the surface roughness of the punch can reach Ra0.2μm or less, ensuring that the edges of the stamped products are smooth and burr-free, meeting the strict quality requirements of industries such as electronic connectors and medical devices.
Application scenarios
1. Electronic connector industry
Connector terminals need to be stamped at a precision of 0.1mm, and traditional molds are prone to wear and lead to dimensional deviations. Tungsten steel punches can achieve millions of stampings without wear, ensuring the consistency of terminal spacing and improving signal transmission stability.
2. Automotive parts manufacturing
When processing high-strength parts such as engine gears and sensor housings, the mold is prone to softening and failure due to high temperature. Tungsten steel punches are resistant to high temperatures of 1000°C, and with high-speed stamping (≥500 times/minute), the frequency of mold changes can be significantly reduced.
3. 3C consumer electronics
Mobile phone frames and laptop computer housings need to be stamped with complex textures, and traditional molds are prone to burrs. High-precision tungsten steel punches are combined with etching technology to achieve mirror-level surface effects and reduce the subsequent polishing process.
4. Medical device production
Surgical instruments and implants must meet biocompatibility, and mold materials must be non-toxic and corrosion-resistant. Tungsten steel punches are FDA-certified and resistant to disinfectant corrosion, ensuring the long-term safety of the product.
Cleaning and maintenance
1. Daily cleaning
Use compressed air to blow away debris on the mold surface and avoid scratching with a hard brush;
After stamping, wipe the punch with a neutral detergent immediately to prevent metal powder from oxidizing and adhering.
2. Regular maintenance
After every 5,000 punches, check the wear of the punch blade. Minor wear can be repaired by grinding;
When it is not used for a long time, apply anti-rust oil and store it in a dry environment (humidity ≤ 60%) to avoid electrochemical corrosion.
3. Lubrication management
Use high-temperature grease (operating temperature ≥ 200℃) to reduce friction heat during punching;
Avoid using sulfur-containing lubricants to prevent chemical reactions with tungsten steel and cause embrittlement.
FAQS
Q1: Can tungsten steel punches be used to process stainless steel?
A: Yes. Tungsten steel has a much higher hardness than stainless steel, but the appropriate punch shape (such as a guide structure) must be selected according to the material thickness to disperse stress.
Q2: How to quickly replace the punch after it breaks?
A: A quick-change punch assembly is used, and it can be replaced by simply loosening the locking screw.
Q3: What is the difference between a tungsten steel punch and a ceramic punch?
A: Tungsten steel has better toughness and is suitable for impact loads; ceramics have higher hardness but are prone to brittle fracture and are mostly used in low-stress scenarios.
Q4: How to determine whether the punch needs to be replaced?
A: When the stamped product has burrs, out-of-tolerance dimensions, or increased die noise, the punch wear should be checked immediately.
