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Zhuzhou Sanxin Cemented Carbide Manufacturing Co., Ltd

Ultra-Fine Grain Tungsten Carbide Precision Punch with High Hardness ≥ 90.5 HRA and Mirror-Like Surface Roughness Ra ≤ 0.05 μm

商品の詳細:
起源の場所: 中国
ブランド名: Sanxin
証明: ISO9001
モデル番号: SX-2272
お支払配送条件:
最小注文数量: 1PC
価格: 交渉可能
支払条件: LC、T/T
供給の能力: 10000個/月
  • 詳細情報
  • 製品の説明

詳細情報

磨き率: 0.1mm3/MJ未満 特徴: 優れた 耐磨 耐腐蝕性
カスタム 形状: リクエストに応じて利用可能 特徴: 耐久性が向上する
耐衝撃性: 素晴らしい 磁気特性: 磁性でないもの
融点: 2870°C 抗張力: 1,900MPa
超硬加工: 高い耐久性 合金の指定: yg6/yg8/yg10x/yg20c

製品の説明

Tungsten Carbide Precision Punch
Product Overview

This tungsten carbide (cemented carbide) micro precision punch features a body diameter of Φ 1.95 mm and tip radius of R0.2 mm. Designed for micro-hole blanking, precision step forming, and high-speed punching applications, it is ideal for progressive dies, high-speed stamping dies, and powder metallurgy molding tools requiring long service life and strict dimensional consistency.

Material & Performance

Manufactured from ultra-fine grain tungsten carbide (WC grain size ≤ 0.5 μm) with 6%-10% cobalt binder. This material combination delivers high hardness (≥ 90.5 HRA) and high transverse rupture strength (≥ 3000 MPa). Compared to conventional high-speed steel punches (M2, ASP23), service life is 5-10 times longer, particularly when punching hard materials like stainless steel, silicon steel, and copper alloys.

Manufacturing Accuracy
  • 5-axis CNC precision grinding + mirror polishing
  • Diameter tolerance: ± 0.002 mm (±0.001 mm achievable)
  • Radius profile deviation: ≤ ±0.003 mm
  • Surface roughness: Ra ≤ 0.05 μm (mirror-like) - reduces sticking and frictional heat
  • Concentricity & cylindricity: ≤ 0.005 mm - suitable for precision guide bushings
Typical Applications
Industry Specific Use
Electronic connectors Terminal holes, guide pin holes
Precision stamping Stainless steel shims, springs, lead frames
Powder metallurgy Micro steps, bumps, cavity details
Medical devices Micro-hole punching, guide tube forming
Automotive parts Injector shims, sensor housing micro-holes
Suitable Stamping Materials
  • Stainless steel (SUS 304, 301, 430)
  • Silicon steel
  • Copper alloys (beryllium copper, brass)
  • Aluminum foil, nickel strip
  • Engineering plastic sheets
Packaging & Marking
  • Individual plastic protection tube + rust preventive oil
  • 10 pieces / box, with dimension, material, batch number on label
  • Optional 3D inspection report (including profile, roundness, roughness)
Technical Specifications
Parameter Category Item Standard / Range Tolerance / Remark
Dimensional Body diameter D Φ1.95 mm ±0.002 mm (±0.001 mm achievable)
Tip radius R R0.2 mm ±0.005 mm
Overall length L 30 - 80 mm (custom) ±0.05 mm
Entry chamfer (optional) C0.1 - C0.3 tip or back end
Shank diameter (if shouldered) per drawing, typical Φ3.0 / Φ4.0 ±0.005 mm
Material Grade YG6 / YG8 / YG10X / ultra-fine selected for wear or toughness
WC grain size 0.4 - 0.8 μm ultra-fine grade
Cobalt content 6% / 8% / 10% higher = tougher
Performance Comparison
Tungsten Carbide Punch (Φ1.95-R0.2) vs. Other Materials
Parameter Tungsten Carbide Punch HSS Punch (M2 / ASP23) Carbide + Coated Punch
Hardness (HRA / HRC) 90.5 HRA (~74 HRC) 62-66 HRC 90 HRA + coating
TRS (MPa) 3000 - 3800 3500 - 4500 (tougher) 2800 - 3500
Wear resistance ★★★★★ ★★★ ★★★★★
Chipping resistance ★★★★ (due to R0.2) ★★★★★ ★★★☆
Suitable stamping speed High speed (800+ spm) Medium-high speed High speed
Life vs. M2 5 - 10× 6 - 12×
Relative cost Medium-high Low High
Recommended use High wear, micro holes, long life General duty, easy change Dry stamping, sticky materials
Tungsten Carbide Precision Punch - close-up view showing micro tip radius and mirror finish

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