1) hot crack
热裂纹
1.
Forming Mechanism and Processing Control of Hot Crack in Die-casting Magnesium Alloys;
镁合金压铸热裂纹形成机制及工艺对策
2.
Simulation of welding hot cracks in austenitic stainless steel pipe butt joints;
奥氏体不锈钢管道焊接热裂纹缺陷模拟方法
3.
From which,although the welding properties are not the same for different aluminum alloy brands,but the main reason for such aluminum alloy thin-walled tube cracking was not the material itself,and the instability for energy input in welding caused concavity and convexity to arose hot cracks.
分析结果表明,虽然具体铝合金牌号的焊接性能不尽相同,但造成这类铝合金薄壁管焊接开裂的主要原因是焊接中线能量控制不平稳,局部能量过大造成焊接塌陷突起而引发热裂纹。
2) hot cracking
热裂纹
1.
Mechanism of weld with trailing impact rolling to control residual stresses deformation and hot cracking;
随焊冲击碾压控制焊接应力变形防止热裂纹机理
2.
Strain field analysis of weld with trailing impact rolling to control residual stress and distortion and prevent hot cracking;
随焊冲击碾压减小应力变形防止热裂纹应变场分析
3.
Effect of restraint condition on hot cracking during welding of 2A12T4 aluminum alloy
2A12T4铝合金焊接时拘束条件对热裂纹的影响
3) thermal crack
热裂纹
1.
For linearity defect of shell circle welding joint which in under working for some plant,through the analysis for welding material and welding groove,we found that the reason for bring the welding thermal crack is more little of welding joint molding efficiency.
根据某厂制造容器的筒体间环向焊接接头出现的线性缺陷,通过分析焊接材料和焊接坡口,确定为因焊缝成形系数过小而导致产生焊接热裂纹。
2.
The causes of thermal cracks and crack exten-sion are analyzed by means of elastic-plastic mechanics, and effective measures preventing thetool from exit failure are presented.
分析了负剪切产生的机理，并给出了负剪切长度的计算公式以及产生负剪切时切削力的表达式；通过对刀具刃区应力分析得知：由于负剪切的形成造成切削力的作用方向发生偏转，使得刀具应力场恶化，导致刀具破损；用弹塑性力学分析了热裂纹的发生及裂纹扩展机制，并给出了防止刀具切出破损的措施。
3.
Based on the numerical simulation of solidification of EMC(electromagnetic casting) slab,a formula estimating the thermal stress and the location where the thermal crack initiates are proposed.
依据电磁铸造（ＥＭＣ）大板坯凝固进程的数值模拟结果，建立了预测热裂纹萌生部位及应力的解析表达式对板坯产生的裂纹及其材质的组织结构的评价表明：热裂纹的萌生与材料的力学性能及组织结构没有必然联系；控制凝固过程中板坯表面温度是减少热裂纹萌生的有效方法。
4) Heat crack
热裂纹
1.
Experimental study on heat cracks of turbine housing on turbochargers;
涡轮增压器蜗壳热裂纹的试验研究
5) reheat crack
再热裂纹
1.
So the crack is reheat crack,it can be .
通过扫描电镜、能谱仪及光学显微镜对裂纹产生原因进行了深入分析,认为该裂纹属高温形成的再热裂纹,可以通过改变预热、后热温度,提高焊接质量以降低应力集中等方法来防治。
2.
The base metal 15CrMoG component and weldability,welding method,welding material,welding structure,technics parameter,welding process and heat treatment were analyzed,the improving welding measure was put forward,which effectively avoided reheat crack and the other welding defects of certain ship boiler pipe.
通过对15CrMoG钢母材成分及焊接性能、焊接方法、焊接材料、焊接结构、工艺参数、焊接操作和热处理的分析,提出了改进的焊接措施,有效地防止了某船锅炉管再热裂纹和其它焊接缺陷的产生。
3.
After analyzing,the source of the welded joint fracture on the sealing structure of the reheater through the penthouse superheater in a 1025t/h boiler is reheat crack which is caused by high rigidity and high stress concentration of the welding joint,excessive welding energy input and heat stress existing in the joint when operating.
分析某发电厂1025 t/h锅炉再热器穿顶密封结构焊接接头的开裂源于再热裂纹,裂纹的产生原因在于:焊接接头高刚度、高应力集中,过大焊接线能量及接头在运行中存在热应力。
6) reheat cracking
再热裂纹
1.
The susceptibility of HCM2S steel to reheat cracking has been studied by y-groove restraint weld cracking tests,which confirm the steel's susceptibility in the temperature range between 690(°C)～760(°C).
通过斜y型拘束焊接试验方法对HCM2S钢的再热裂纹敏感性进行了试验研究。
2.
On the basis of the principles and structures of the cold cracking implant testing machine,the study on the implant equipment of reheat cracking test is reviewed in this paper.
在深入分析冷裂纹插销试验机的原理和结构的基础上,本文进行了插销式再热裂纹试验装置的研究工作。
补充资料：热裂纹
分子式：
CAS号：
性质：在焊缝凝固时或高温下形成的裂纹。大多出现在焊缝上，而且都是沿奥氏体晶界发生开裂。从产生裂纹的形态、裂纹形成的机理以及产生裂纹的温度区间等几个方面综合考虑，可以把热裂纹分为以下三种：结晶裂纹、高温液化裂纹、多边化裂纹。
CAS号：
性质：在焊缝凝固时或高温下形成的裂纹。大多出现在焊缝上，而且都是沿奥氏体晶界发生开裂。从产生裂纹的形态、裂纹形成的机理以及产生裂纹的温度区间等几个方面综合考虑，可以把热裂纹分为以下三种：结晶裂纹、高温液化裂纹、多边化裂纹。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条