1) hardness test of weld zone
焊接接头硬度试验
2) maximum hardness test of weld zone
焊接接头最高硬度试验
4) weld decay test
焊接接头晶间腐蚀试验
5) welding test
焊接试验
1.
Study on the welding test of TA2 titanium alloy;
TA2钛合金焊接试验研究
2.
In welding test of TCS stainless steel, it was found that impact absorbing energy of heat-affected zone(HAZ)near bond line in welded joint was low.
在TCS不锈钢前期焊接试验中发现其焊接接头热影响区的冲击吸收功值在熔合线附近较低,原因是接头热影响区晶粒粗大所致。
3.
Also confirms the electrodes and welding technologies by welding test and procedure qualification,successfully used on the welding of transfer stovepipe.
对HK40炉管焊接易产生热裂纹及保证800℃左右使用的热强性及热稳定性,提出了保证焊缝质量的措施,通过焊接试验与评定,确定了施焊工艺,并成功地用于转化炉管的焊接。
6) welding experiment
焊接试验
1.
It is shown by metallographic analysis and welding experiments that breaking of PDC when welding could be attributed to the metallurgical fissures in the PDC inserts.
介绍了直流电位法检测复合片衬垫裂纹和空隙等表面缺陷的原理和方法,并通过与金相显微观察和焊接试验结果的对比分析,找出了导致复合片在焊接中开裂的主要原因是复合片衬垫存在制造裂纹。
2.
This paper introduced the repairing technology of the single point mooring equipment of Float Production Storage Off load(FPSO) and the solutions for the technological difficulties during the process which are mainly about the welding experiment and the temperature control technology,provided an example for the similar enterprises to repair such a significant equipment of marine projects.
文章阐述了浮式生产储油卸油轮(FPSO)的单点系泊装置的维修过程中所需解决的技术难题,主要包括焊接试验及焊接过程中和焊后的保温处理,为同类企业修复大型海洋工程重要部件提供了范例。
补充资料:焊接接头晶间腐蚀
焊接接头晶间腐蚀
welded joint intercryctalline corrosion
honjle」}etou jingj旧n fush{焊接接头晶间腐蚀(welded joint intererys-talline eorrosion)在焊接接头处出现的沿晶粒边界发生的腐蚀现象。外观仍可有金属光泽,但实际上晶粒已失去联系,钢质已变脆。在奥氏体不锈钢部位有焊缝晶间腐蚀、敏化区腐蚀和刀状腐蚀等三种不同部位的晶间腐蚀。关于奥氏体不锈钢的晶间腐蚀机理有多种学说,其中以碳化物(如er23e。或(er、Fe)23e。等)在晶界沉淀现象的“贫铬理论”比较为人们所接受。所以为防止这类晶间腐蚀尽量降低含碳量,使焊缝金属含有一定量的稳定元素(如钦、妮等)以防止或降低晶界Cr23C。的形成。此外,焊缝的组织状态也有影响,单相奥氏体组织的焊缝有利于柱状晶的发达,出现贫铬层后会使腐蚀贯穿于晶粒之间,若焊缝为奥氏体了加高温铁素体占的双相组织,由于树枝状被打破,不能构成集中的腐蚀通道。高铬铁素体也会有晶间腐蚀,但与奥氏体钢不同的是从高温急冷下来即有晶间腐蚀倾向,可通过650一85oC加热、缓冷使铬扩散均匀化来消除贫铬层,防止晶间腐蚀。 (许祖泽)
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