40Cr无缝钢管

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1、工艺流程热轧（挤压无缝钢管）：圆管坯→加热→穿孔→三辊斜轧、连轧或挤压→脱管→定径（或减径）→冷却→坯管→矫直→水压试验（或探伤）→标记→入库。冷拔（轧）无缝钢管：圆圆管坯→加热→穿孔→打头→退火→酸洗→涂油（镀铜）→多道次冷拔（冷轧）→坯管→热处理→矫直→水压试验（探伤）→标记→入库。合金钢：a.低合金钢（合金元素总含量≤5%）b.中合金钢（合金元素总含量>5~10%）c.高合金钢（合金元素总含量>10%正火规范：正火温度850-870℃，正火后硬度179-229HBS。冷压毛胚软化处理规范：温度740~760℃，保温时间4~6h，以50~100℃/h的

2、冷速，随炉降至温度≤600℃，出炉空冷.处理前硬度≤217HBS，处理后硬度≤163HBS。生铁屑保护摆动鬼火规范（670±10）℃×2h，随炉升温，（710±10）℃×2h，随炉降温，（670±10）℃×2h，随炉升温，（710±10）℃×2h，再随炉降温，（670±10）℃×2h，随炉升温，（710±10）℃×2h，随炉降温，共3个循环，再降温至550℃，出炉空冷。处理后硬度153HBS.调质处理规范：淬火温度850±10℃，油冷；回火温度520±10℃，水、油冷却。概述化学成份和力学性能：成分：硅0.17～0.37%，锰0.5～0.8，铬0.8～1.

3、1%调质处理：试样直径：25mm，850度淬火加热油淬，520度回火后：抗拉1000兆帕，屈服800兆帕，延伸9%，断面收缩45%，冲击韧性588.3千焦/平方米。因其制造工艺不同，又分为热轧（挤压）无缝钢管和冷拔（轧）无缝钢管两种。冷拔（轧）管又分为圆形管和异形管两种。聊城舜冶金属制品（现货表）名称规格数量名称规格数量名称规格数量生产厂家40cr63*1011.74840cr127*149.93740cr194*3211.220聊城舜冶40cr83*1113.62640cr127*1723.94240cr194*359.640聊城舜冶40cr83*131

4、1.77140cr127*1811.45240cr194*3712.934聊城舜冶40cr83*1411.76640cr127*2230.40040cr203*148.258聊城舜冶40cr83*1624.14240cr127*2521.22140cr203*1614.225聊城舜冶40cr89*910.72540cr127*308.91540cr203*1821.114聊城舜冶40cr89*1014.78540cr130*202.54540cr203*2111.180聊城舜冶40cr89*1119.13840cr133*1211.04740cr203*2

5、69.886聊城舜冶40cr89*149.55840cr133*1318.02540cr203*289.935聊城舜冶40cr89*166.57540cr133*1514.67040cr203*4010.683聊城舜冶40cr89*207.33640cr133*1823.80940cr219*1414.228聊城舜冶40cr95*1010.46640cr133*2014.78340cr219*163.772聊城舜冶40cr95*1013.30140cr133*227.60740cr219*1824.335聊城舜冶40cr95*1320.37540cr133

6、*258.16540cr219*20.546.697聊城舜冶40cr95*1410.25840cr140*1520.43240cr219*2218.588聊城舜冶40cr95*1615.66540cr140*185.81340cr219*322.054聊城舜冶40cr95*1810.22840cr140*2012.53040cr219*326.126聊城舜冶40cr95*209.55840cr140*258.55240cr219*354.882聊城舜冶40cr102*1013.65540cr146*105.59140cr219*3810.820聊城舜冶40

7、cr102*109.68640cr146*148.55840cr232*307.267聊城舜冶40cr102*1114.00440cr146*168.38040cr232*409.756聊城舜冶40cr102*129.66540cr146*185.18340cr232*459.758聊城舜冶40cr102*1430.34740cr146*205.03640cr245*1632.850聊城舜冶40cr102*1617.11140cr146*226.25340cr245*206.938聊城舜冶40cr102*187.96840cr146*255.46040cr

8、245*225.762聊城舜冶40cr102*208.38840c