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233.crwmn gang zhi ying ci cai liao zu ni ao mo de xi tu - peng gong shen chu li
Pages: 21
Year: Issue:  2
Journal: Heat Treatment Technology and Equipment

Keyword:  凹模CrWMn钢稀土硼共渗常规热处理硬磁材料模具寿命硬脂酸盐颗粒度工艺处理磨粒磨损;
Abstract: <正> CrWMn钢制阻尼凹模,经常规热处理工艺处理后,在压制磁性铁氧体(含硬脂酸盐润滑剂小于1%,聚乙烯醇粘结剂小于1%,粉末平均颗粒度为0.3mm)时,模具要受到100~120MPa的压力和强烈的磨粒磨损的作用。型腔单边在磨损3μm后,即为失效。模具寿命一般仅达5~6万次。模具采用熔盐电解稀土硼共渗,再经常规热处理后,寿命可提高到25~30万次。
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