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45钢表面渗硼的工艺研究论文.doc

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45钢表面渗硼的工艺研究论文.doc

145钢表面渗硼工艺的实验研究2目录1概述..............................................................11.1引言..............................................................11.2金属热处理........................................................11.2.1金属热处理的定义..................................................11.2.2金属热处理的工艺..................................................11.2.3金属热处理的分类..................................................21.3渗硼..............................................................21.3.1渗硼定义..........................................................21.3.2渗硼的工艺........................................................31.3.3渗硼层的组织性能..................................................41.3.4渗硼的应用........................................................41.3.5渗硼工艺的材料选择................................................51.3.6渗硼后的热处理....................................................61.3.7渗硼技术的前景展望................................................91.4课题研究的内容....................................................91.5选题意义..........................................................9245钢固体渗硼的研究...............................................102.1固体渗硼.........................................................102.1.1固体渗硼的使用方法注意事项.......................................102.1.2固体渗硼后的热处理工艺...........................................102.2实验方案.........................................................102.3实验过程.........................................................122.3.1实验材料的选用...................................................122.3.2实验渗剂材料的选取以及原理.......................................142.3.3试验的工艺参数...................................................152.3.4渗硼前准备.......................................................1532.3.5进行渗硼.........................................................152.3.6进行热处理.......................................................162.4显微硬度的测量...................................................172.5制作金相试样.....................................................182.6金相观察.........................................................203实验结果分析.....................................................213.1表面硬度分析.....................................................213.2渗层组织形貌分析.................................................223.3过渡层组织分析...................................................233.4渗硼层厚度分析...................................................243.5保温时间的影响...................................................243.6温度的影响.......................................................25结论.................................................................25参考文献................................................................26致谢.................................................................27ProcessingResearchforSolidBoronizationofthe45steelAbstractThispaperisabouttheresearchonthesurfaceboronidingprocessofthe45steel.Thepresentpaperisforthepurposeofthroughto45steelsolidboronizationmethod,strengthens45steelthecomprehensivemechanicsperformanceandtheimprovementboronizationlevelorganizationandtheperformance,thesolidboronizationusestheboronizingmediumandtheworkpieceheatsuptocertainsoakingtimerealizestheworkpiecesurfaceboronizationtechnologicalprocess.Usingthesolidboronizationcutandtrymethoddeterminedtheboronizationcrafttheparameterboronizationtemperature,boronizationtime,rareearthjoinquantityandchromiumjoinquantitytothe4毕业设计说明书(论文)外文摘要boronizationlevelthicknessinfluence,thusdeterminesthereasonableboronizationcraftroute.Withinstrumentsandtheequipmentandsoonlightmicroscope,metallographymicroscope,microsclerometerobserveinfiltratetheleveltheorganizationandthetestinfiltratetheleveltheperformance.DrawsthefollowingconclusionthroughtheexperimentThinglinerule,reasonableboronizationcraftTemperature880yi920℃Time46hours.After45steelboronizationprocessingtheskinhardnessenhances,theabrasionresistancecanimprove,theoxidationresistanceperformanceisgood.Brittlenessisbigdifferentlychangesaccordingtoboronizationcraftroute.

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