45、60Si2Mn钢的淬透性与淬硬性分析.docVIP

45、60Si2Mn钢的淬透性与淬硬性分析 摘要： 淬硬性钢在淬火的最高硬度。形状、尺寸相同的不同钢材淬火后，所获得的硬度值大小是不相同的。可以根据所获得的最高硬度来进行淬硬性的比较，硬度越高的淬硬性越好，反之，硬度越低的淬硬性越差。 淬透性钢材在理想条件下淬火所能获得的硬层深度。形状、尺寸相同的不同钢材，在相同条件下淬火后，它们所获得淬层深度是不相同的，淬硬层深度越深，我们就说他的淬透性好。相反，淬层深度越浅，的淬透性差。 关键词：淬透性　淬硬性　含碳量　临界冷却速度 Research on Quenched and Hardenability Characteristics of 45 and 60Si2Mn Steels Abstract: Quenching rigid means steel can reach the highest rigidity’s ability in normal quenching condition. Major in steel quenching rigid with carbon content. The same in different shapes, sizes steel quenching after hardness value is not the same size. According to the highest rigidity obtained to compare, the higher the better the quenching rigid, conversely, the lower the rigid quenching. Its quench-hardening ability means steel can obtain martensitic organizations of hard layer depth in ideal quenching conditions. Its quench-hardening ability is an attribute of the inherent steel, which depends on the steel quenching cooling rate of critical size. Under the same conditions after quenching, the same in different shapes, sizes steel, obtain differ depth is quenched. The depth of hardening layer, the better its quench-hardening ability, instead the shallow depth of quenching, its quench-hardening ability. This comprehensive experimental research on normal quenching condition,the difference of hardness change between 45 and 60Si2Mn , to contrast different kinds of rigid and its quench-hardening ability. Through comparison of metallographic organization to illustrate the influence of 45 steel 60Si2Mn and its quench-hardening ability and organizational factors of rigid. Keywords: Quenched Characteristic Hardenability characteristic Carbon content Critical cooling rate 目录 第一章 绪论 1 1.1 45、60Si2Mn的综合性能和应用 1 1.1.1 45钢的工作条件及性能要求 1 1.1.2 60Si2Mn的工作条件与性能要求 1 1.2钢的热处理 2 1.2.1调质钢的热处理 2 1.2.2弹簧钢的热处理 2 1.3合金元素在45、60Si2Mn中的作用 2 1.3.1合金元素在45中的作用 2 1.3.2合金元素在60Si2Mn中的作用 3 1.4 本次实验目的 3 第二章 实验方案和实验过程 3 2．1实验材料及设备 3 2．1．1实验材料45、60Si2Mn