,ENTER Headline in Arial bold 22pt,max.double-row with 1.0 line spacing,November 7,2019,To change footer,slide number and date,please select Insert Header and Footer,Enter text on first,level,here.To use bullets,please hit Tab“on your keyboard or use Increase list level“(Start“Paragraph“),Second level text with squared bullet.To move back to first level,please use Decrease list level“(Start“Paragraph“),Third level text with squared outline bullet.To move back to previous levels,please use Decrease list level“(Start“Paragraph“),Fourth level text with circle bullet.To move back to previous levels,please use Decrease list level“(Start“Paragraph“),Fifth level text with circle outline bullet.To move back to previous levels,please use Decrease list level“(Start“Paragraph“),Sixth level text with horizontal line bullet.To move back to previous levels,please use Decrease list level“(Start“Paragraph“),#,金属材料热处理,金属材料热处理,2,November 15,2024,材料分类,材料,金属材料,高分子材料,无机非金属材料,铁,水泥,塑料,2October 10,2023材料分类材料金属材料高分子,元素周期表,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,3,元素周期表October 10,2023To change,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,4,地壳中元素含量,October 10,2023To change foot,5,November 15,2024,金属材料分类,金属材料,有色金属,黑色金属,铁,锰,铬,1,、金属是具有光泽、有良好的导电性、导热性与机械性能。金属是个大家庭，现在世界上有,86,种金属。,2,、黑色金属共,3,种，黑色金属以外的金属称为有色金属。,5October 10,2023金属材料分类金属材料有色金,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,6,黑色金属与有色金属,1,、黑色金属和有色金属这名字，常常使人误会，以为黑色金属一定是黑的，其实不然。黑色金属只有三种：铁、锰、铬。而它们三个都不是黑色的！纯铁是银白色的；锰是银白色的；铬是灰白色的。,2,、因为它们的一些氧化物呈现黑色，因此得名。但像碳水化合物，芳香烃等名词一样，它也失去了原有的意义，只是一个习惯称呼，例如，铁的氧化物就有红色的，铬的氧化物也有绿色的,三氧化二铁,四氧化三铁,October 10,2023To change foot,7,November 15,2024,铁碳合金分类,铁碳合金,工业纯铁,铸铁,碳钢,又称熟铁，指含碳量小于,0.02%,的铁合金,含碳量在,0.02,2.11%,之间的铁碳合金,又称生铁，含碳量在,2.11,4.3%,的铁碳合金,7October 10,2023铁碳合金分类铁碳合金工业纯,8,November 15,2024,碳钢分类,碳钢,低碳钢,高碳钢,中碳钢,含碳量,0.02-0.25%,含碳量,0.25,0.6%,含碳量,0.6,2.11%,8October 10,2023碳钢分类碳钢低碳钢高碳钢中,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,9,碳钢按金相组织分类,铁碳合金,正火状态,退火状态,珠光体钢,贝氏体钢,马氏体钢,奥氏体钢,亚共析刚,共析钢,过共析钢,共析刚（珠光体）,1000X,亚共析刚（铁素体,+,珠光体）,300X,过共析刚（珠光体,+,渗碳体）,500X,October 10,2023To change foot,10,November 15,2024,合金钢分类,有铬钢、锰钢、铬锰钢、铬镍钢、铬镍钼钢、硅锰钼钒钢等,结构钢,合金钢,按元素含量分,低合金钢，,合金元素总含量,5%,按元素种类分,按主要用途分,中合金钢，,合金元素总含量,510%,高合金钢，,合金元素总含量,10%,工具钢,特殊性,能钢,10October 10,2023合金钢分类有铬钢、锰钢、,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,11,南昌工厂用钢种,钢种,使用零件,20CrMoH,MT75,二轴、,N800、NC05、JC530、JC538、MSB、MSG5E,8620H,MT75,SCM722H2,MSB,中间轴（,T6,）、,JC538,一轴（,T1,、,T10,）,16MnCrS5,MT82、R75,20MnCrS5,MT82,外购齿圈,October 10,2023To change foot,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,12,热处理,一图、二曲线、四火五转变,1,、一图：铁碳相图,2,、二曲线：连续转变曲线、等温转变曲线,3,、四火：正火、退火、淬火、回火,4,、五转变：奥氏体转变、马氏体回火转变、珠光体转变、贝氏体转变、马氏体转变,October 10,2023To change foot,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,13,铁碳相图,October 10,2023To change foot,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,14,加热曲线,October 10,2023To change foot,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,15,奥氏体转变,October 10,2023To change foot,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,16,马氏体回火转变,低温回火（回火马氏体）,中温回火（回火屈氏体）,高温回火（回火索氏体）,October 10,2023To change foot,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,17,C,曲线,October 10,2023To change foot,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,18,1,、在,A1650,形成的珠光体片层较厚，在金相显微镜下放大,400,倍以上可分辨出平 行的宽条铁素体和细条渗碳体，称为粗珠光体、片状珠光体，简称,珠光体,2,、在,650600,形成的珠光体用金相显微镜放大,500,倍，从珠光体的渗碳体上仅看到一条黑线，只有放大,1000,倍才能分辨的片层，中片状，称为,索氏体,3,、在,600550,形成的珠光体用金相显微镜放大,500,倍，不能分辨珠光体片层，仅看到黑色的球团状组织，只有用电子显微镜放大,10000,倍才能分辨的细片状，称为,屈氏体,C,曲线,珠光体,3800X,索氏体,8000X,屈氏体,8000X,October 10,2023To change foot,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,19,热处理,普通（整体）热处理,表面热处理,退火,正火,淬火,回火,表面淬火,表面化学热处理,感应加热表面淬火,火焰加热表面淬火,激光加热表面淬火等,渗碳,渗氮,碳氮共渗,热处理方法,渗金属等,October 10,2023To change foot,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,20,热处理方式,定义,作用,退火,将金属构件加热到高于或低于临界点，保持一定时间，随后缓慢冷却。,降低硬度，改善切削加工性；消除残余应力，稳定尺寸，减少变形与裂纹倾向使金属内部组织达到或接近平衡状态。,正火,将工件加热到适宜的温度后在空气中冷却。,正火的效果同退火相似，只是得到的组织更细，常用于改善材料的切削性能，也有时用于对一些要求不高的零件作为最终热处理。,淬火,将工件加热保温后，在水、油或其他无机盐、有机水溶液等淬冷介质中快速冷却。,使钢件变硬，但同时变脆。,回火,将淬火后的钢件在高于室温而低于,650,的某一适当温度进行长时间的保温，再进行冷却，这种工艺称为回火。,为了降低钢件的脆性，将淬火后的钢件在高于室温而低于,650,的某一适当温度进行长时间的保温，再进行冷却。,调质,淬火,+,高温回火,获得一定的强度和韧性,常见整体热处理,October 10,2023To change foot,November 15,2024,To change footer,slide number and date,please select Insert Header and Footer,21,热处理车间工序,热前零件,渗碳,-,淬火,-,清洗,-,回火,防渗,探伤,清理抛丸,高频退火,强力抛丸,校直,转热后,转热后,转热后,October 10,2023To change foot,November 15