pwht

Effect of simulated PWHT on Mechanical Property of Steel Plate SA-299 Used for Boiler

模拟焊后热处理对锅炉用钢板SA-299力学性能的影响

Influence of PWHT conditions on Hydrogen-Induced disbonding of cladding

焊后热处理条件对不锈钢堆焊层氢致剥离的影响

Comparison of Effect of PWHT in Different Temperature on Pressure Vessel of C-Mn Steel

C-Mn钢压力容器焊后热处理效果的比较

The three dimensional welding residual stress and temperature fields in local PWHT are constructed .

构造了三维管接头焊接应力和局部热处理温度场。

Therefore , a second time PWHT was carried out and it gave a satisfactory result .

为此，进行第二次热处理，并取得较好的效果。

The Microstructure and Mechanical Properties Study of Nickel Based Transition Dissimilar Steel Joints at Different PWHT Condition

镍基过渡异种钢焊接头在不同热处理状态下的性能研究

The morphology of the particles become regular and coarse after PWHT .

经焊后热处理后，粒子形貌变的规则并发生粗化。

The completed PWHT record chart shall be submitted for employer approval following completion of heat treatment .

完成热处理后，焊后热处理记录完工图应提交业主批准。

Residual Stress Measurement and Second Time PWHT for High-pressure Cold Separator with a Filling-up Plate on Shell

冷高压分离器壳体堵板的残余应力测定与二次热处理

Research on Suitable Heating Conditions during Local PWHT ( 2 ) Determination of Critical Heated Band during Local PWHT

局部焊后热处理最佳加热条件的研究（二）&临界加热宽度的确定准则

PWHT Analysis of 2000m ~ 3 LPG Spherical Storage Tank of CF-62 Steel

关于CF&62钢制2000m~3液化石油气球罐焊后热处理问题的分析

This method clearly shows the whole history of stress relief during PWHT and a critical heated width can be obtained .

该方法可清楚地显示整个热处理过程中的应力变化并可找到临界的加热宽度。

When post weld heat treatment is required , the PWHT may be performed by using an approved subcontractor .

如果需要进行后焊热处理，则应由经核准的分包商实施。

The embrittlement of the welds increases with the increase of quenching temperature of PWHT .

淬火温度越高，焊缝脆化越严重；

C.2.3 ensure that all attachment welds are made before PWHT is applied .

确保在焊后热处理前完成所有连接焊缝。

Unless otherwise indicated by employer , Brinell hardness limits apply to welds after pwht .

除非业主另有说明，布氏硬度限制适用于经焊后热处理的焊缝。

If the welding conditions can not be PWHT , chrome-nickel stamping elbow should be used .

若焊件不能进行焊后热处理，则应选用铬镍冲压弯头。

Many factors have an influence on PWHT procedures and the heated width is the most important parameter controlling the effectiveness of local PWHT .

影响局部焊后热处理的因素很多，其中加热宽度是最重要的一个控制参数。

C.1.5 particularly intricate parts such as valve and pump manifolds should be designed for furnace pwht .

针对炉焊后热处理，应对特别复杂的部件（如阀组和泵的管汇）进行设计。

The key problem is the weld of 3.5 % Ni steel and how to ensure the weld impact toughness satisfy the standard of PWHT .

关键是3.5%Ni钢的焊接，以及如何通过热处理保证该钢材焊接后焊接接头冲击韧性符合标准要求。

A direct quantitative method has been proposed to assess the effectiveness of stress relief for tubular joint in local post weld heat treatment ( PWHT ) .

提出了直接定量评定管接头焊后局部热处理应力释放效果的方法。

Upon satisfactorily completion of the required visual inspection and PWHT , the coupons shall be sent for machining for preparation of test specimens .

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。

PWHT can reduce the hardness of the regions of the welded joint , improving the toughness of welded joint and removing the welding stress .

因此需要进行焊后热处理以降低焊接接头各区域硬度，提高焊接接头韧性以及消除焊接内应力。

A series of different PWHT conditions are studied to find the critical heated width by using this method . The heated band width of 5 Rt is reasonable .

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。

In this study , a direct method to assess the effectiveness of local PWHT was used based on the thermal viscoelastic plastic FEM with the consideration of creep phenomena .

本文采用粘弹塑性有限元分析，提出一个基于残余应力消除效果的局部焊后热处理的直接评定方法。

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 .

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；

This article introduces the special welding products capable of reaching equivalent mechanical functions of the base materials : strength , creep and toughness , taking the Post Welding Heat Treatment ( PWHT ) into consideration .

本文介绍了能够达到与母材力学性能相当的特殊焊接产品的强度、蠕变和韧性，同时考虑到了焊后热处理（PWHT）条件。

Optimum heating conditions for local post weld heat treatment ( PWHT ) of Cr-Mo steel pipe were discussed from the point of view of residual stress using thermal-visco-elastic-plastic finite element method ( FEM ) .

采用粘弹塑性有限元方法从应力释放角度讨论了Cr-Mo钢局部热处理下各种优化加热条件。

The article discuss the temporary saddle special for multi-saddle design at design load , design temperature , saddle quantity , saddle arrange plan and impact load in the hydraulic process , PWHT process and transport process .

本文在大型塔器的水压试验过程、热处理过程及运输过程中，从设计载荷、设计温度、鞍座数量、鞍座布置及冲击载荷等方面讨论临时鞍座特别是多鞍座的具体设计。

The SSCC sensitivity of 20 # steel pipes welded with different electrodes in H_2S media and the impact of PWHT on SSCC were evaluated through C ring sample SSCC sensitivity tests .

通过C型环试样应力腐蚀敏感性试验，评定了不同焊条焊接20号钢管在硫化氢介质中的应力腐蚀开裂的敏感性以及焊后热处理对SSCC的影响。