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1)  post heat treatment after welding
焊接后后热处理
1.
The steel sheets of Q235 welded at the room temperature,300 ℃ and 500 ℃ were treated using post heat treatment after welding.
采用焊接后后热处理的方法对Q235试板在室温下进行焊接焊后自然冷却、预热到300℃和500℃进行焊接焊后保温,然后用小盲孔法测量焊接残余应力及试板在腐蚀溶液中的腐蚀速率。
2.
Post heat treatment after welding is one kind of new technology reduces the welding residual stress.
焊接后后热处理是一种新的降低焊接残余应力的技术,试验采用了焊接后后热处理的方法,对三块Q235试板采用相同的焊接参数分别进行室温正常焊接,300℃,500℃预热焊接并进行焊后保温,然后在用小盲孔法测量焊接残余应力。
2)  welds without post-welded heat treatment(PWHT)
焊接接头免焊后热处理
3)  welding and post welding heat treatment
焊接及焊后热处理
4)  welding craft and after-heat treatment
焊接工艺及焊后热处理
5)  post welding heat treatment
焊后热处理
1.
This study is concerned with the effect of post welding heat treatment(PWHT)on the microstructure and properties at the intercritical reheated coarse-grained heat-affected zone(IRCGHAZ)of WB36 steel, and investigated whether the PWHT could reduce IRCGHAZ embrittlement.
针对WB36钢(15NiCuMoNb5)临界再热粗晶区(IRCGHAZ)存在的脆化现象,研究了焊后热处理对模拟临界再热粗晶区(IRCGHAZ)组织性能的影响,探讨其改善韧性作用。
2.
This paper studies the technology,equipment and properties of post welding heat treatment of the RE microalloy quenching rail which was heated with medium frequency induction and quenched with pressure air for head of,normalized for other of.
通过热模拟试验选择了合理的焊后热处理工艺参数,恢复了轨头强度和硬度,并大幅度地提高了焊接接头的韧塑性和综合性能,满足了无缝线路铺设使用要求。
3.
It is pointed out that post welding heat treatment will not significantly improve residual stress in dissimilar steel welding joints unless correct and appropriate heat treatment procedures are taken.
文章主要讨论了焊接热处理对火电站管道异种钢焊接接头带来的问题,分析了热处理对接头组织、焊接残余应力的影响,指出通过焊后热处理可以明显改善电厂管道异种钢焊接接头残余应力,但要使用正确和合适的热处理工艺。
6)  postweld heat treatment
焊后热处理
1.
Effect of postweld heat treatment on microstructure of electron beam welded joints of Ti_3Al;
焊后热处理对Ti_3Al电子束焊缝组织形态的影响
2.
Numerical value analysis on reduction of welding residual stresses with postweld heat treatment on P91 pipes;
焊后热处理消除P91钢管焊接残余应力的数值分析
3.
Based on Barkhausen Noise,as-welded residual stresses and residual stress after postweld heat treatment of 16MnR(include weld- ing metal,fusion zone,heat affect zone)were measured by using magneto-elastic method with 20~70 kHz frequency & 0.
07mm的STRESS- CAN500C磁弹性应力仪,测量了压力容器用16MnR钢焊后以及焊后热处理的残余应力(包括焊缝、熔合区、热影响区),研究了残余应力的形成、不同区域的分布。
补充资料:焊接:焊條
    在手工电弧焊中作为熔化电极用的焊接材料﹐也称电焊条。焊条由焊芯和涂敷在焊芯外面的药皮组成。焊接时﹐焊条和工件各作为一个电极﹐在它们之间產生电弧﹐焊条熔化后又作为填充金属与熔化的母材结合﹐形成焊缝金属。焊条的焊芯一般都採用与母材相同的金属经拉拔製成﹐但为了保证焊后焊缝的机械性能﹐所含的有害元素和杂质往往比母材低。药皮由矿石﹑化学物质﹑有机物﹑铁合金等粉剂和黏结剂组成。焊接过程中﹐药皮熔化形成熔渣﹐并產生一定的气体﹐保护熔化金属不受空气中有害气体的侵害。药皮中的钾﹑钠等元素起稳定电弧的作用。加入的铁合金可以净化焊缝金属﹐又可渗入合金元素﹐使其具有合适的化学成分和性能。 
    药皮以硷性氧化物和萤石为主的焊条称为硷性焊条﹐它能使焊缝金属含氢量低﹑有很好的塑性﹑韧性和抗裂性能。药皮以氧化鈦为主要成分的焊条称为鈦型焊条﹐它有良好的焊接工艺性能﹐但焊缝金属性能不如硷性焊条﹐且熔深较小﹐适於薄板焊接。药皮以氧化鈦和碳酸盐为主的称为鈦钙型焊条﹐其焊接工艺性能和焊缝金属的机械性能介於上述两种焊条之间﹐综合性能较好。药皮中含有大量有机物的称为纤维素型焊条。它在焊接时產生的气体多﹐电弧吹力大﹐用於打底焊和管道全位置焊接﹐但焊缝含氢量高﹐只适於焊接强度级别不太高的钢材。此外还有药皮中含大量石墨的堆焊焊条。焊条按用途可以分为结构钢焊条﹑耐热钢焊条﹑不锈钢焊条﹑镍和镍合金焊条﹑铜和铜合金焊条﹑铝和铝合金焊条等。
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