强调了焊接球罐焊后热处理的必要性。
The necessarily of post-weld heat treatment of spherical tanks was emphasized.
用焊接热模拟方法确定了焊后热处理工艺参数。
The technological parameter of post-welded heat-treatment is determined by welding thermal simulation test.
研究308L焊缝经过焊后热处理其蠕变-疲劳的性质。
The creep-fatigue properties of 308L ste el weld after post-weld heat treatments (PWHT) were investigated.
只要有可能，制造的容器应在一个封闭炉中进行整体焊后热处理。
The fabricated vessel shall be post-weld heat treated as a whole in an enclosed furnace whenever possible.
然而至今各国关于局部焊后热处理的评定标准仍存在很大的差异。
However up to now the assessing criteria in local PWHT are still very different from one code to another.
本程序包括铸件材料的热处理方法，铸件焊补区域的焊后热处理方法。
This procedure covers the method for casting material's heat treatment, and Post weld heat treatment (PWHT) to weld repair area of castings.
确定焊后热处理温度，并且通过各项实验证明焊后热处理温度的合理性。
The post welding heat temperature is determined and we proved the reasonable by a series of experiments.
给出了焊接残余应力与局部焊后热处理应力的试验结果与模拟结果的对比。
Experiment results of welding residual stress and the stress after local post weld heat treatment are compared with numerical simulation.
采用此方法可评价各种因素对局部焊后热处理的影响，并寻求最佳加热条件。
A series of different PWHT conditions are studied to find the critical heated width by using this method.
焊后热处理可以较好地改善焊接接头的韧性，但存在耗能大、工时长等问题。
The toughness may be well improved by postheat treatment which is large in energy consumption and long in working period.
将ANAND粘塑性本构关系引入到焊后热处理消除残余应力的有限元计算中。
ANAND viscoplastic constitutive equation was introduced into the FE model for calculation of the reduction of welding residual stresses during the post weld heat treatment.
通过焊前预热、层间温度控制及焊后热处理等手段获得了满足质量要求的焊缝。
With the methods of the pre-heating before welding, controlling the interlaminar temperature and the heat treatment after welding, the welds that satisfy the quality specifications can be available.
通过一系列电解充氢试验比较了不同焊后热处理条件对不锈钢堆焊层氢致剥离的影响。
The influence of PWHT conditions on hydrogen-induced disbonding were studied through a series of electrolytic hydrogen charging tests.
结果表明，经过焊后热处理后焊缝出现严重的低温脆化，其冲击试样的断口为解理状形貌；
The results show that after post-weld heat treatment(PWHT), the welds of X80 steel seriously embrittle, and the fracture morphology of impact specimens is cleavage.
试验表明，采取焊前预热，焊后热处理的TIG焊工艺进行焊接可以减少焊接缺陷的产生。
The experiment results show that the welding defects can be decreased by using preheat and post-weld heat treatment.
采用焊接热模拟的方法，模拟HAZ粗晶区组织，并在不同回火参数下对试样进行焊后热处理。
By use of the method of welding thermal simulation, the morphology in HAZ was simulated and the post-weld heat treatment under different tempering parameter to the test specimen was carried out.
改善焊接工艺或进行焊后热处理，使M - A组元分解成铁素体和碳化物是提高其韧性的有效方法。
The effective method to improve the impact ductility of this zone is to change the welding process and conduct post-weld heat treatment, which is help to divide M-A component into ferrite and carbide.
结果显示，一定的母材厚度和焊后热处理条件，使熔合线附近氢浓度峰值提高，从而使氢剥离倾向增大。
The results show that certain thickness of the base metal and the regime of heat treatment will increase the peak hydrogen concentration and promote the tendency of disbonding.
分析了新型耐热钢（T／P92）焊接性能，并对其焊接工艺、充氩措施及焊后热处理控制要点进行论述。
This paper analyzed the welding capability of the new type heat resistant steel and discussed its welding technology, measures of argon filling and the control points of post weld heat treatment.
残余拉应力区宽度变大。 文中还给出了焊后热处理后的应力大小情况，以证明焊后热处理能改善应力分布。
The weld residual stress by PWTH is discussed in order to prove that PWTH can really improve the distribution of stress.
钢的焊接CCT图，是正确选择焊接材料、确定最佳焊接工艺、消除焊接裂纹、制订焊后热处理规范的重要依据。
Welding CCT diagrams of steels are the basic to select welding material, determine the optimum welding technology, relieve welding cracks and lay down standard of past heat treatment.
这为寻求简化t 91钢焊后热处理提供了新的有效途径和可能性，对设备改造、现场安装及检修等具有重要意义。
This method provided an available way for the post-weld heat treatment of T91 steel, and it was great important to facility rebuild, field...
由电阻焊接方法焊接的超低碳钢支架对磁性破坏较大，导致显示器再转向后出现图像滞后和色偏等失真现象，需要进行焊后热处理。
Resistance welding method has great destroy to the magnetic property of the seam, which will cause image distortion of the display when swerving, and post heat treatments are needed.
模拟钢轨焊接及焊后热处理工况，采用热膨胀方法分别测定uic 900a及u75 V钢轨钢的连续冷转变曲线(CCT曲线)。
By simulating welding and simulating heat treatment after welding, CCT Curves of UIC900A and U75V rail steels are determined by the expansion method.
结果表明：采用焊前预热和焊后热处理的焊接工艺方案所获得的焊接接头比不采用以上措施获得的焊接接头更为合理，应用更安全、可靠。
The result shows that it is more reasonable, safe and reliable to adopt procedure with warm up before welding and post heat treatment after welding.
从焊接材料的选用，焊前预热、焊接过程和焊后热处理的控制几个方面，着重介绍了ZY6400/12.5/28型液压支架的焊接工艺。
The paper introduces welding technology of type ZY6400/12.5/28 hydraulic support, from several respects of selecting materials preheat before welding, welding process and so on.
提出了基于固有应变理论的模型，对焊后局部热处理各个阶段的特征进行了阐述。
A model based on inherent strain theory has been proposed to explain the mechanism at different stage of local PWHT.
如果需要进行后焊热处理，则应由经核准的分包商实施。
When post weld heat treatment is required, the PWHT may be performed by using an approved subcontractor.
目视检验合格，完成后焊热处理之后，附体试片应转送加工，作为试件样品使用。
Upon satisfactorily completion of the required visual inspection and PWHT, the coupons shall be sent for machining for preparation of test specimens.
对球形储罐焊后整体热处理常用的燃油高速喷嘴内燃法进行回顾，并就开始研制的微机自动控制系统做了简介。
The method of internal combustion with high speed jet nozzle used in the local whole post weld heat treatment of spherical tanks was reviewed.
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