<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px">热打模具钢Y4钢Y4钢性能Y4钢价格热打模具钢Y4钢
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px">Y4 热作模具钢 4Cr3Mo2MnVNiB 简介:
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px">(2)化学成分(质量分数,%) C 0.36~0.42、Cr 2.2~2.7、Mn 0.9~1.3、Mo 2.0~2.5、V 0.9~1.3、Si 0.25~0.5、B 0.002~0.006、Nb 0.04~0.1、P、S≤0.02。
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px">(2)预备热处理
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px">等温退火:加热温度为840~860℃,保温2~4h;等温温度为680℃,保温4~6h,炉冷到550℃出炉空冷。
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px">(3)热加工规范
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px">加热温度1100~1150℃,始锻温度1050~1100℃,终锻温度≥850℃。
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px">(4)临界点
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px"> Ac1≈789℃,Ac3≈910℃,Ms≈263℃。
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px">(5)淬火及回火
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px">淬火温度为1050~1100℃,油冷,硬度为58~59HRC。回火温度为600~630℃,回火时间2h,回火2次,硬度为44~52HRC。
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px">热打模具钢Y4钢Y4钢性能Y4钢价格热打模具钢Y4钢
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px">(6)应用举例
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px">热打模具钢Y4钢Y4钢性能Y4钢价格热打模具钢Y4钢
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px">具体详情请点击:<*n style="color:#3498db"> <*n style="color:#2980b9">http://www.jitigang*/products/detail/113.html
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px"><*n style="background-color:#ffffff"><*n style="color:#333333">销售热线(7*24小时):<*n style="color:#e74c3c"><*n style="font-size:22px"><*n style="background-color:#ffffff">13917559788 021-60533888
<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px"><*n style="background-color:#ffff00">信息来源:上海阪村实业有限公司
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<*n style="font-family:Arial,Helvetica,sans-serif"><*n style="font-size:16px"><*n style="background-color:#ffff00">产品编号:BC20191126ZHAOHUAN
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