1、回火后硬度强度s硬度HB(d10)45440197229(4.304.00)820840水805405604.004.2040CrA390192223(4.354.05)840860油352.73.05806004.004.1036703.13.4570580711603.43.6560570490217255(4.103.80)3.803.9071120550560590241277(3.903.65)403.653.80水油41602.53.0590620685269302(3.503.70)303.503.6031402.63.057060035CrMoA(3.804.10)850870
2、3.03.25906103.804.0041703.253.45705903.453.6550570560580580610*40CrNiMoA690255293(3.803.55)2.73.1*30Cr1Mo1V950970300670690255285(3.803.57)25066068020Cr1Mo1VTiB10301050190700720*73510069071038CrMoAlA9309506406603.653.906306401011606506703.13.2630650277302(3.653.50)503.503.653.13.361063051100620640785
3、293321(3.553.40)2.73.23.403.5015CrMoA207241(4.203.90)9009203.63.85506003.904.1031703.43.857062025Cr2MoVA920940 油602.83.13.603.90612003.23.45660670735(3.703.50)3.553.65611503.23.334CrNi3Mo241282(3.903.62)8708903502.83.03.653.93.13.3255284(3.803.58)3.63.75600620271298(3.653.52)*15MnMoVN217(4.1)9609801
4、051Cr12Mo550229255(4.03.8)3.803.951Cr13355187229(4.44.0)3.03.257107304.104.303.33.5(4.34.0)6807004.04.206506801Cr123.03.306807102Cr131872079801000油2.83.2720740217248(4.103.85)2.83.0670700235269(3.953.70)6506603Cr139801020空3.703.90411302.63.2286321(3.603.40)411005805901Cr11MoV192241(3.904.35)10001030
5、3.904.303.904.051Cr12W1MoV100010501503.03.43.903.70286331(3.63.3)2Cr12NiMo1W1V760293331(3.553.35)9709902003.553.4530Cr2MoV9409603.603.8061250670680611501Cr18Ni9Ti205187108011005.05.14.754.85225(5.4)8008200Cr19Ni9 105011005.4精铸叶片ZG1Cr13187217(4.404.10)10201040梅花试棒70ZG2Cr13197227叶片本体2.82.9730740ZG1Cr1
6、1MoV(4.304.00ZG1Cr12W1MoVZG0Cr19Ni9190注:采用日本材料时,淬火温度为960980,回火温度允许比表中温度高1030。有效截面小于20mm者可采用空冷。2.2要求淬硬的钢种(新HRC30)表2要求硬度范围HRCHRC35508608805018020046502402704145300330364038041031354004205655515520023026029032035040043044047040CrA260290300330350380430460468508704855354046048092094048580600Cr5Mo1V609409
7、50586219021065Mn4650820840350390414539043043047060Si2MnA8708903804204204603640460500313550054050CrVA42468408703804002Cr135110001030油或空48522002505105305305505605803Cr1352605205405355504Cr13569501000505530035043495405603542T8A63780800水或水油616316018056602002405155260300320360T12627707906264160200CrWMn63
8、9CrWMn8108309CrSi8Cr3654004204049480450GCr1583086032038045503801109Cr1810101040200300W6Mo5Cr4V212101230W9Mo3Cr4V12201240回火后油冷。淬火加热时要加以保护,以防脱碳。回火脆性区为500510,严禁采用。回火脆性区为470530,严禁采用。2.3 要求渗碳淬硬的钢种表3要求硬度范围12CrNi3A5876080015020020CrA低碳钢3403602.4几点说明: 表13中提供的淬火、回火温度范围,是供生产时按具体情况选定参数用的,不是某一炉允许的温度偏差。 凡水冷的钢种(奥
9、氏体钢除外)均应及时回火以防开裂。 表1中的s数值为0.2的数值。 45、35CrMoA、40CrNiMoA为保证取样部位合格,毛坯送检硬度允许适当提高。 对感应加热,快速加热的零件淬火温度允许适当提高。 表中标有*者生产上尚未用过或较少用过,其参数不够成熟,尚待生产中进一步验证,生产中允许在验证基础上进行修改。 表13中冷却为水油者,允许用水空水代替,具体方法为:水冷一段时间后将零件提起空中(让零件反热后)再入水继续冷却。3. 常用钢正火、回火及退火温度3.1要求综合性能的钢种表4正火温度有效厚度(mm)0.2HB245131163900920600620*27519715Cr1Mo1V32
10、514619771073015Cr2Mo127520797099070072031567069025111170880900840860217ZG230-450230450131179ZG270-500270500143197ZG20CrMo135180640660ZG15Cr1MoA950970680700ZG20CrMoV140201940960930950ZG15Cr1Mo1V345104010607307509801000ZG15Cr2Mo13.2其它钢种表5正火后硬度(HB)退火温度退火或回火后参考硬度(HB) 97099083085040CrNiMoA84088022930Cr1M
11、o1V30Cr2MoV(P2)1Cr13680720 8508709209401Cr127007504Cr13255 95097066070026978082060Si2MnA2546406808508802868108508909206506808709007607802413027507603855146507002072551972417807903Cr2W8V7007405CrMnMo6506907607805CrNiMo760780用于消除粗晶。用于软化;用于细化晶粒。用于消除粗晶。正火为消除过热组织及网状碳化物。模具翻新退火温度为720740。模具翻新退火温度为710730。3.3几点说明:
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