Produced by Kyoritsu Gokin Co., Ltd.& Everloy Shoji Co., Ltd.

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Material List

MC20

JIS standard: VC-40

Features

耐凝着、耐摩耗性が抜群の超硬素材。軟質金属(純鉄・純銅)加工用に開発した材種で低Co化、Co相の強化と特殊WCの使用により軟質金属との親和性を抑制し、優れた耐摩耗性と耐食性を有します。

MC20が搭載される設備

プレス加工機切断機
マルチフォーミングマシン粉砕機

MC20の用途

パンチ・ダイハンマー
チャック切断刃

MC20で生産される部品

バネ時計部品
半導体PGA放熱板・熱交換器
ヒートシンク・放熱フィンリチウムイオン電池用電極材

MC20の特性

耐摩耗性耐腐食性
高:純鉄・純銅加工性 一般的負荷 ≦1.0ステンレス加工性 一般的負荷 ≦0.8mm
アルミニウム加工性 重負荷 ≦2.0耐凝着性

MC20を使用した課題解決事例

MC20を使用した超硬製品

その他の特徴

Physical Properties

Our gradesHardness
(HRA)
Transverse rupture strength
[GPa]
Co
[%]
MC2090.02.86
Reference: G390.02.78

 

mc20_img01

Usual material problem

Attraction of Co in cemented carbide
from metals with high affinity to Co
       ▼
Displacement of Co in the cemented carbide
       ▼
Damage of mold

Characteristic of MC20

Reduction of Co and Selection of special WC
       ▼
Decreasing the high affinity of Co

Comparison of reaction to copper (Analysis of EPMA)

Comparative reaction test between MC20 and G4 grade.
Above-shown photos are the cross-section surface of the test pieces which are compacted wire copper in center of MC20 and G4 after sintering and treated by HIP.
・棒グラフは銅の濃度を表します

 

mc20_img02

Result;
MC20: Copper wire remains in the original position without diffusing.
G4: Copper wire has diffused in the material.

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