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40cr调质

来源:baiyundou.net   日期:2024-09-29

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Plastic mold 2022-12-22工号: 88 Y

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蓟黎朱4774跪求40Cr调质工艺!请各位专家赐教!感激涕零 -
胡钱丹18142148887 ______ 淬火温度选择在850摄氏度;小工件采用油冷,大工件水冷.回火温度选择在550摄氏度.回火后快冷(水冷)以消除高温回火脆性.

蓟黎朱477440Cr合金钢材料焊接后是否可调质 -
胡钱丹18142148887 ______ 可以调质,调制后40cr的强度会升高,所以焊前的焊材强度最好不能低,还有就是保证焊缝质量,否则调质会让本来的小缺陷变大. 希望我的回答对你有用,如果满意请点击采纳~

蓟黎朱4774调质后的40Cr的许用弯曲应力是多少?抗压强度是多少? -
胡钱丹18142148887 ______ 40cr钢材的许用应力有(安全系数n= 1.34): 1.许用端面承压应力=548.6MPa; 2.许用剪切应力=211.1MPa; 3.许用抗压弯应力=365.7MPa. 40Cr调质以后的硬度大概在HRC32-36之间,也就是说大概HB301-340之间.40Cr—830-860℃油淬—>55...

蓟黎朱4774怎样将40Cr调质到罗氏硬度22~26度? -
胡钱丹18142148887 ______ 淬火+ 高温回火称为调质. 即钢件加热到比淬火时高10~20℃ 的温度, 保温后进行淬 火, 然后在400~720℃ 的温度 下进行回火.

蓟黎朱4774热处理40Cr - T代表甚么意思 -
胡钱丹18142148887 ______ 后缀字母T是热处理调质工艺的符号,表示该工件需要做调质处理.调质处理是将工件淬火后再进行高温回火的热处理工艺,40Cr的调质处理规范是:淬火温度850℃±10℃(油冷);回火温度520℃±10℃(水、油、空冷),调质后40Cr的硬度大约在HRC32~36之间.

蓟黎朱4774精密钢管热处理调质方法有哪些 -
胡钱丹18142148887 ______ 40Cr热处理工艺40Cr的性质:从钢的分类来看,40Cr属于低淬透性调质钢,具有很高的强度,良好的塑性和韧性,即具有良好的综合机械性能;40Cr钢可用于制造汽车的连杆、螺栓、传动轴及机床的主轴等零件.40Cr热处理工艺特性介绍 淬火...

蓟黎朱4774求助40cr螺栓锻造毛坯调质工艺
胡钱丹18142148887 ______ 40cr螺栓锻造毛坯调质.一般840~860淬油,用500~600度高温回火,一般硬度在28~32HRc.

蓟黎朱477440Cr的调质钢该怎么做!!!
胡钱丹18142148887 ______ 40Cr 淬火温度:840-860 保温25分钟 均热40分钟 回火温度:540-560 回火时间240分钟

蓟黎朱4774铸钢40Cr,如何控制调质硬度?
胡钱丹18142148887 ______ 主要是靠回火温度高低来控制,可适当提高回火温度来降低硬度.

蓟黎朱477440Cr的屈服强度是多少? -
胡钱丹18142148887 ______ 40Cr屈服强度::≥785(σs/MPa) 40Cr属于国标合金结构钢,执行标准:GB/T 3077-1999 40Cr钢是机械制造业使用最广泛的钢之一.这是最常用的合金调质结构钢,用于制造承受中等负荷和中等速度工作条件下的机械零件,如汽车的转向节、后半轴及机床上的齿轮、轴、蜗杆、花键轴、顶尖套等;也可经调质并高频淬火后用于制造具有高的表面硬度及耐磨性而无大冲击的零件,如齿轮、套筒、轴、主轴、曲轴、心轴、销子、连杆、螺钉、进气阀等;也可经淬火、中温或低温回火,制造承受重负荷的零件;又适用于制造进行碳氮共渗处理的各种传动零件,如直径较大和要求低温韧性好的齿轮和轴. 40Cr化学成分如下图:

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