1)Cr12MoV steelCr12MoV钢
1.The Defect Analysis for Cr12MoV Steel by Ultrasonic Flaw Detector;Cr12MoV钢超声波探伤缺陷分析
2.Technology of Carbide Coating on Cr12MoV steel Die in Fused Salt;Cr12MoV钢模具的熔盐碳化物覆层技术
3.The effect of N￣+ and Mo￣+ implantation on hardness of Cr12MoV steel;N~＋和Mo~＋注入对Cr12MoV钢硬度的影响
英文短句/例句
1.Study on Compression Superplasticity of Cr12MoV SteelCr12MoV钢的压缩超塑性研究
2.Research on Properties of Laser Cladding Ni-based WC Alloy on Cr12MoV Steel SurfaceCr12MoV钢激光熔覆Ni基WC合金性能研究
3.Microstructure and properties of TiB2 coating deposited by electrospark on the surface of Cr12MoVCr12MoV钢表面电火花沉积TiB2涂层特性研究
4.Cause Analysis for Early Failure of Steel Cr12MoV Thread Rolling Die and Its CountermeasureCr12MoV钢滚丝模早期失效原因分析与对策
5.Austempering process of Cr12MoV steel thread rolling dieCr12MoV钢滚丝模等温淬火工艺
6.Research of Laser Surface Hardening of Carbon Structural Steel and Cr12MoV碳素结构钢和Cr12MoV钢的激光表面淬火研究
7.STUDY ON SURFACE AND WEAR PROPERTIES OF CrMoN COATINGS WITH DIFFERENT Mo CONTENTMo含量对Cr12MoV钢表面CrMoN涂层磨损性能的影响
8.Surface Residual Stress of Cr12MoV Steel by Different EDM Conditions不同电火花加工条件下Cr12MoV钢的表面残余应力
9.Effects of Different EDM Conditions on the Surface Residual Stress of Cr12MoV Steel不同电火花加工条件对Cr12MoV钢表面残余应力的影响
10.Main problems and research development in application of Cr12MoV die steelCr12MoV模具钢应用的主要问题与热处理研究进展
11.Microstructure and Properties of Ni60/WC Composite Coatings Prepared on Surface of Cr12MoV Mould Steel by Laser CladdingCr12MoV模具钢激光熔覆Ni60/WC复合涂层的组织与性能
12.Optimization of parameters in electric impulsed spheroidizing annealing process of Cr12MoV steelCr12MoV模具钢电脉冲球化退火热处理工艺参数的优化
13.Crack Analysis in Heat Treatment of Cr12MoV Convex Mold;Cr12MoV凸模热处理裂纹分析
14.Research on the Process of Electroless Ni-P and Performance of Coating on Cr12MoV;Cr12MoV化学镀镍—磷工艺及镀层性能研究
15.Basic Research on Precision Casting Technology of Cr12MoV Mold PartCr12MoV模块精密铸造技术基础研究
16.Study on Casting Process Simulation of Cr12MoV DieCr12MoV模块的铸造工艺模拟研究
17.corrosion resistant stee抗腐蚀钢, 耐蚀钢, 不锈钢
18.dead-hard steel极硬钢, 高硬钢, 高强钢
相关短句/例句
Cr12MoVCr12MoV钢
1.Failure Aaalysis of Cr12MoV Steel Moald-Cavity in Wire Electrical Discharge Machining;Cr12MoV钢模块线切割时开裂的失效分析
2.Friction-wear Characteristics of the Cr12MoV Steel After Plasma Sulphonitrocarburizing;Cr12MoV钢等离子S-N-C共渗摩擦磨损特性研究
3)Steel Cr12MoVCr12MoV钢
4)Cr12MoV steelCr12MoV 钢
5)Cr12MoV die steelCr12MoV模具钢
6)Cr12MoV steelCr12MoV
1.Some methods and measures for prolonging the service life of the cold working die of Cr12MoV steel are introduced on the aspects of improving the raw material by forging, pre-heat-treatment, quenching and tempering, cryogenic treatment and surface strengthening.从原材料改锻、预备热处理、淬火及回火、深冷处理、表面强化处理等方面分析介绍了提高Cr12MoV钢冷作模具寿命的一些方法和措施 ,并通过实例表明 ,采用这些方法和措施可较大幅度地提高模具寿
延伸阅读
45钢和40Cr钢调质的热处理工艺45钢40Cr钢调质调质是淬火加高温回火的双重热处理，其目的是使工件具有良好的综合机械性能。调质钢有碳素调质钢和合金调质钢二大类，不管是碳钢还是合金钢，其含碳量控制比较严格。如果含碳量过高，调质后工件的强度虽高，但韧性不够，如含碳量过低，韧性提高而强度不足。为使调质件得到好的综合性能，一般含碳量控制在0.30~0.50%。调质淬火时，要求工件整个截面淬透，使工件得到以细针状淬火马氏体为主的显微组织。通过高温回火，得到以均匀回火索氏体为主的显微组织。小型工厂不可能每炉搞金相分析，一般只作硬度测试，这就是说，淬火后的硬度必须达到该材料的淬火硬度，回火后硬度按图要求来检查。工件调质处理的操作，必须严格按工艺文件执行，我们只是对操作过程中如何实施工艺提些看法。1、45钢的调质45钢是中碳结构钢，冷热加工性能都不错，机械性能较好，且价格低、来源广，所以应用广泛。它的最大弱点是淬透性低，截面尺寸大和要求比较高的工件不宜采用。45钢淬火温度在A3+(30~50)℃，在实际操作中，一般是取上限的。偏高的淬火温度可以使工件加热速度加快，表面氧化减少，且能提高工效。为使工件的奥氏体均匀化，就需要足够的保温时间。如果实际装炉量大，就需适当延长保温时间。不然，可能会出现因加热不均匀造成硬度不足的现象。但保温时间过长，也会也出现晶粒粗大，氧化脱碳严重的弊病，影响淬火质量。我们认为，如装炉量大于工艺文件的规定，加热保温时间需延长1/5。因为45钢淬透性低，故应采用冷却速度大的10%盐水溶液。工件入水后，应该淬透，但不是冷透，如果工件在盐水中冷透，就有可能使工件开裂，这是因为当工件冷却到180℃左右时，奥氏体迅速转变为马氏体造成过大的组织应力所致。因此，当淬火工件快冷到该温度区域，就应采取缓冷的方法。由于出水温度难以掌握，须凭经验操作，当水中的工件抖动停止，即可出水空冷（如能油冷更好）。另外，工件入水宜动不宜静，应按照工件的几何形状，作规则运动。静止的冷却介质加上静止的工件，导致硬度不均匀，应力不均匀而使工件变形大，甚至开裂。
