共查询到19条相似文献,搜索用时 70 毫秒
1.
因罩式炉退火存在时间长、钢板表面氧化严重不易酸洗的缺点,为了在不影响性能的前提下提高生产效率、改善1Cr13表面酸洗质量,通过试验,确定了利用常化炉对各段温度合理调整的1Cr13板热处理生产工艺。结果表明,与罩式炉退火相比,处理同等数量钢板仅需8h,效率提高20倍以上;处理后的钢板性能可完全满足标准要求,而且获得的组织理想、均匀。 相似文献
2.
3.
本文通过不同退火时间对0Cr13Mn机械性能的影响,不同淬火温度对0Cr13Mn组织、性能影响的实验,确立了0Cr13Mn不锈钢的合理热处理参数。 相似文献
4.
选取Cr13型不锈钢小型材为研究对象,主要针对碳和热处理制度对钢材组织和性能的影响进行了研究,对生产实践具有重要指导意义。 相似文献
5.
钢板在电罩炉中退火因时间长会造成表面不易酸洗,为了在不影响性能的前提下提高生产效率,改善1Crl3不锈钢中板表面酸洗质量,通过试验确定出利用常化炉各段温度的合理调整来进行1Crl3不锈钢中板热处理的生产工艺。 相似文献
6.
7.
2Cr13阀杆在不同热处理工艺下的组织与性能研究 总被引:1,自引:0,他引:1
本文研究了2Cr13钢阀杆在不同淬火和回火工艺下的拉伸性能和冲击韧性的变化规律。运用扫描电镜观察了不同热处理参数下的组织特性与断口形态,用透射电镜研究了析出物种类和分布。讨论了显微组织与性能之间的关系,并由此确定出这些零件最佳的热处理制度。 相似文献
8.
为了达到13Cr-L80油井管生产技术要求,必须根据其具体使用条件进行热处理。通过对其机械性能的检验,主要是针对其强度和冲击功指标制定了热处理制度。 相似文献
9.
本文通过金相、电镜等手段分析研究了用1Cr13连铸坯生产的不锈中低倍腐蚀线的产生原因,并提出减轻的措施。 相似文献
10.
11.
通过不同退火时间对0Cr13Mn机擒性能的影响。不同淬火温度对0Cr13Mn组织、性能影响的实验.确立了0Cr13Mn不锈钢的合理热处理参数。 相似文献
12.
Effect of Heat Treatment on Microstructure and Property of Cr13 Super Martensitic Stainless Steel 总被引:2,自引:0,他引:2
The microstructures and mechanical properties of Cr13 super martensitic stainless steel after different heat treatments were studied. The results show that the structures of the steel after quenching are of lath martensite mixed with a small amount of retained austenite. With the raising quenching temperature, the original austenite grain size increases and the lath martensite gradually becomes thicker. The structures of the tempered steel are mixtures of tempered martensite and reversed austenite dispersed in the martensite matrix. The amount of reversed austenite is from 754% to 2249%. After different heat treatments, the tensile strength, the elongation and the HRC hardness of the steel are in the range of 813-1070 MPa, 101%-212% and 2133-3237, respectively. The steel displays the best comprehensive mechanical properties after the sample is quenched at 1050 ℃ followed by tempering at 650 ℃. 相似文献
13.
14.
The microstructural evolution and mechanical property of 00Cr13Ni5Mo2supermartensitic stainless steel(SMSS)subjected to different heat treatments were investigated.Room tensile tests,hardness tests,scanning electron microscopy,transmission electron microscopy and X-ray diffraction were conducted on the heat-treated steels.It is found that the microstructure of the heat-treated steel is composed of tempered lath martensite,retained austenite andδ-ferrite.The austenitizing temperature and tempering temperature have a significant effect on the microstructural changes,which leads to the complex variations of mechanical properties.The fine tempered lath martensite and more dispersed reversed austenite in the microstructure facilitate improving the comprehensive mechanical properties of the studied steel.The optimal heat treatment process of 00Cr13Ni5Mo2SMSS is obtained by austenitizing at 1 000℃for 0.5h+air cooling followed by tempering at 630℃for 2h+air cooling,where the excellent combination of tensile strength,elongation and hardness can be achieved. 相似文献
15.
The effect of different heat treatments on the reversed austenite in Cr15 super martensitic stainless steel was investigated. The experimental results indicate that the microstructure of the steel is composed of tempered martensite and diffused reversed austenite after quenching at 1050 ℃ and tempering from 550 to 750 ℃. The volume fraction and size of reversed austenite increase with increasing tempering temperature and both of them reach the maximum value at 700 ℃. The volume fraction and size of reversed austenite decrease when the temperature is above 700 ℃. The transmission electron microscope (TEM) results indicate that the orientation relationship between tempered martensite and reversed austenite belongs to Kurdjmov-Sach (K-S) relationship. 相似文献
16.
2Cr13马氏体不锈钢铸坯表面纵裂控制 总被引:1,自引:0,他引:1
根据马氏体不锈钢在连铸浇注过程中的凝固收缩特性,分析连铸浇注过程中易引发表面纵裂的原因,提出应对措施,从而有效避免板坯表面纵裂的产生。 相似文献
17.
18.
化学成分和固溶温度对1Cr17Mn9Ni4N不锈钢组织和性能的影响 总被引:2,自引:1,他引:2
为提高1Crl7Mn9Ni4N钢固溶处理后的力学性能(特别是钢的强度),研究了化学成分及固溶处理温度对其组织和性能的影响。结果表明,1000—1125℃固溶处理后,该钢的组织为单相奥氏体。在标准成分范围内,随着镍、锰含量的增加,该钢的强度降低,塑性有所改善。氮明显提高该钢的强度。根据试验结果,每增加0.01%的氮钢的室温强度可提高大约5MPa,且塑性基本上不受影响。当合金成分(质量分数,%)控制在C0.08—0.12、Crl6.5—17.5、Ni3.5—4.2、Mn8.0—9.0、N0.22—0.28时,1Crl7Mn9Ni4N钢经1050—1100℃固溶处理后强度较高、塑性好,室温强度σ0.2和σb可分别达到400MPa和800MPa。 相似文献