ASME中关于焊后热处理的升降温速率在哪里有要求？

lwycumt

ASME中关于焊后热处理的升降温速率在哪里有要求？翻了半天也没找到，希望有熟悉ASME的指导一下。

cts

power piping 31.1 第5章對於銲前預熱、升溫率、PWHT的最小溫度及持溫時間都有說明

盛夏之云

欢迎大家作答，顶顶顶！

直立行走的猪

UCS-56,UHT-56，UNF-56，UHA-32

1csss

楼主可以看表UCS-56，按P-NO.号分类，保温时间，冷却速率都有

chen2013

同意上述两位的意见,针对VIII-1

lyklzy

参见：
1）ASME BPVC Section VIII, Division 1：
     UW-40 PROCEDURES FOR POSTWELD HEAT TREATMENT
       (b) The temperatures and rates of heating and cooling to be used in postweld heat treat-             ment of vessels constructed of materials for which postweld heat treatment may be
             required are given in UCS-56, UHT-56, UNF-56, and UHA-32.
2）ASME BPVC Section VIII， Division 2：
   6.4.4 OPERATION OF POSTWELD HEAT TREATMENT
    6.4.5 POSTWELD HEAT TREATMENT AFTER REPAIRS
    6.4.6 POSTWELD HEAT TREATMENT OF NONFERROUS MATERIALS
    6.5.5 POSTWELD HEAT TREATMENT OF CLAD AND LINED WELDMENTS
3）ASME BPVC Section VIII，Division 3：
   KF-413 HEATING AND COOLING RATES
4）ASME BPVC Section I：
   PW-39 REQUIREMENTS FOR POSTWELD HEAT TREATMENT
    The weldment shall be heated slowly to the temperature specified in Tables PW-39-1        through PW-39-14 and held for the specified time, and shall be allowed to cool slowly in a still  atmosphere to a temperature not exceeding 800°F (425°C). Suggested heating and cooling rates for postweld heat treatment are shown in A-101. and cooling rates for postweld heat treatment described in A-101 are provided as a general guide; the requirements for individual materials within the P-Number listing may have rates more or less restrictive than this general guide.
      A-101 HEATING AND COOLING RATES FOR POSTWELD HEAT TREATMENT
5）ASME BPVC Section XII：
   TF-700 PROCEDURES FOR POSTWELD HEAT TREATMENT
     TF-710 REQUIREMENTS FOR CARBON and LOW ALLOY STEELS
     TF-720 REQUIREMENTS FOR HIGH ALLOY STEEL
     TF-740 REQUIREMENTS FOR FERRITIC STEELS WITH TENSILE PROPERTIES ENHANCED BY    HEAT TREATMENT


   

lwycumt

lyklzy 发表于 2014-3-12 21:28
参见：
1）ASME BPVC Section VIII, Division 1：
     UW-40 PROCEDURES FOR POSTWELD HEAT TREATMENT ...

非常感谢！！！

lwycumt

cts 发表于 2014-3-12 21:29
power piping 31.1 第5章對於銲前預熱、升溫率、PWHT的最小溫度及持溫時間都有說明

好的，谢谢！

sky4yy

受教了这个很有用