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本厂的机修厂主要生产任务之一是为油、化、电三厂服务,为总公司石化系统制造备品配件,所生产的产品大部份具有耐腐蚀,抗氧化性能。因此,在冲压产品生产中,接触大量不锈钢。其中奥氏体不锈钢由于强度高,塑性好,变形抗力大,冷作硬化敏感,特别是当材料厚度δ?2mm,冲裁时,粘结模具刃口现象比较严重。以前,我们冲裁这种不锈钢的模具,常用材料为Cr12、9CrSi等合金工具钢,淬火硬度HRC58～60,冲裁次数一般为60～90件时,(每
Our factory one of the main production tasks mechanized plant for the oil, chemical and electrical plant services for the company’s petrochemical system manufacturing spare parts, most of the products produced by the corrosion-resistant, anti-oxidation properties. Therefore, in the production of stamping products, contact with a large number of stainless steel. Austenitic stainless steel which has high strength, good plasticity, large deformation resistance and cold hardening is sensitive. Especially when the material thickness is δ-2mm, the cutting edge of the bonded mold is rather serious. Previously, we blanked this stainless steel mold, commonly used materials such as alloy tool steel Cr12, 9CrSi, quenching hardness HRC58 ~ 60, the punching frequency is generally 60 to 90 pieces, (per