Burr-free Monolithic Tungsten Carbide Punch For Ultra-hard Core Precision Drilling

Burr-free Monolithic Tungsten Carbide Punch for Ultra-hard Core Precision Drilling

Introduction:
Adopting a step punch with integral sintered tungsten carbide (WC ≥ 94%), with a hardness of 92.5HRA and nanoscale transition rounded corners (R0.03mm), it breaks through the fracture bottleneck of traditional splicing punches and achieves precise piercing without burrs for millions of times in micro scale stamping fields such as electronic connectors, medical catheters, and lead frames.

Chemical Composition

Process:

1. Nano powder step molding
- Isostatic pressing gradient density control (deviation <0.3%)
- Graphite mold accuracy ±1μm (to prevent step deformation)

2. Low pressure SPS synchronous sintering
- Multi-temperature zone precise temperature control (1200℃±3℃)
- Grain boundary diffusion inhibition

3. Pulse electrolysis sharp edge strengthening
- Step transition R angle mirror polishing (Ra 0.02μm)
- Edge residual compressive stress +350MPa (anti-cracking ↑200%)

Application:

1. Precision manufacturing of electronics
- Lead frame: 0.1mm step hole punching (burr <5μm)
- Type-C interface terminal: 0.25mm special-shaped multi-level punching (position accuracy ±2μm)
- PCB plug-in pin: step countersunk hole forming (taper 30°±0.5°)

2. Medical device processing
- Heart stent laser cutting template (0.08mm step hole array)
- Minimally invasive surgical forceps riveting hole (double-stage transition without burr)
- Insulin needle guide hole (Φ0.15mm step expansion hole)

3. Precision mechanical core
- Fuel nozzle micro-hole step forming (roundness error <1μm)
- Clock gear shaft hole fine punching (coaxiality 0.003mm)
- Optical fiber connector ceramic ferrule (multi-level countersunk hole processing)

Zhuzhou Sanxin Cemented Carbide Manufacturing Co.,Ltd is located in Zhuzhou, Hunan Province, which is known as the “Hometown of Cemented Carbide”. It is a national high-tech enterprise that has passed ISO9001:2015 international quality certification system, specializing in manufacturing, research and development of cemented carbide materials and tungsten steel products’ raw material, blank production, tungsten steel precision processing and sales one-stop service.

Zhuzhou Sanxin Cemented Carbide Manufacturing Co.,Ltd inherits and precipitates Zhuzhou cemented carbide tungsten steel processing technology. We have a professional technical team, which lays a solid foundation for manufacturing high quality cemented carbide products. The advantages of cemented carbide products in related fields are obvious. We can provide you with a complete set of cemented carbide products and tungsten steel product solutions.

Zhuzhou Sanxin Cemented Carbide Manufacturing Co., Ltd produces and processes tungsten steel products, selects suitable cemented carbide materials, owns professional customized precision equipment, unique processing technology, implements strict quality control measures of 100% inspection and provides considerate pre-sales and after-sales services. We can produce and process non-standard custom carbide inserts, carbide cutters, carbide molds, carbide fixtures, carbide sheets, carbide rods, hard for customers who need it. Alloy pipe, carbide punching punch, carbide valve seat, carbide insert, cemented carbide nozzle, carbide wear parts, carbide mold parts, and other cemented carbide tungsten steel precision processed products for customers who have needs.

We focus on every process of cemented carbide production and processing, and we are able to meet the needs of our customers' usage requirements on precision tungsten steel processing to the maximum.

Why choose us:

We always implement these business policies of "quality first, customer first"; "both wholesale and retail are welcome, excellent price for large quantity"; "timely delivery, mutual benefit and simultaneous growth with customer " to expand ourselves in the market.

Why rely on us:

We will continue to uphold the concept of “forge ahead”, “focus on innovation”, “based on quality, focus on brand” and “provide products with super-expected value for customers”and make ourselves on the road to development.

Why cooperate with us:

We always adhere to the principle of “quality is life”, “service creates value”, “cooperation promote development”, “support partners, develop ourselves”to cooperate with you for developing together.