(热处理及焊后 热处理程序).pdf

Document No SW Q WQ05 Heat Treatment and PWHT ProceduresRevision 0 Revision Date 05 Mar 2014 Page3 9 Heat Treatment and PWHT Procedures 热处理及焊后热处理程序 Document No SW Q WQ05 Heat Treatment and PWHT ProceduresRevision 0 Revision Date 05 Mar 2014 Page4 9 TABLE OF CONTENTS 目录目录 1 0 SCOPE 范围 1 2 0 REFERENCES 参考文件 1 3 0 EQUIPMENT 设备 1 4 0 HEATING METHODS 加热方法 1 5 0 HEATING AND COOLING RATES 加热和冷却速率 1 6 0 HOLDING TEMPERATURES AND ALLOWABLE RANGES 保温温度和容许范围 2 7 0 INTERRUPTED POSTWELD HEAT TREATMENTS 不规则的焊后热处理 2 8 0 TEMPERATURE CONTROL AND RECORDING 温度控制和记录 3 9 0 RECORDING POSTWELD HEAT TREATMENT CYCLE 焊后热处理记录周期 4 10 0 HARDNESS TESTED REQUIRMENTS AFTER PWHT 热处理后的硬度测试要求 5 11 0 PRETECT DEFORMATION DURING HEAT TREATMENT 热处理期间的防变形 5 12 0 RECORDS 记录 5 Attachment andAppendix List 附件附录清单附件附录清单 ATTACHMENT 1 PWHT REPORT 附件 1 焊后热处理报告 5 Document No SW Q WQ05 Heat Treatment and PWHT ProceduresRevision 0 Revision Date 05 Mar 2014 Page5 9 1 0SCOPE 范 围范 围 1 1 This procedure specifies detailed requirements for performing post weld heat treatment PWHT 该程序规定了进行焊后热处理的详细要求 1 2 This procedure was written to meet the requirements of ASME B31 3 for heat treat temperatures holding times heating and cooling rates and permissible heat treating methods when PWHTis required 该程序是根据 ASME B31 3 中针对焊后热处理的处理温度 保温时间 加热和冷却速率以及允许的加热方法来拟 写的 2 0REFERENCES 参 考 文 件参 考 文 件 Doc No Document Title ASME B31 3 2012Process Piping 工艺管道 3 0EQUIPMENT 设 备设 备 3 1 Certification of equipment shall be provided upon request 应当根据需要提供设备的证书 3 2 Calibration certificate of temperature indicator shall be submitted and approved before use 使用温度指示器之前应当提交校准证书并获得批准 3 3 Recalibration reference paragraph 9 2 参考段落 9 2 中关于重校的内容 4 0HEATING METHODS 加 热 方 法加 热 方 法 4 1 Gas heating methodbe utilized to perform PWHT 利用燃气加热法来进行焊后热处理 4 2 Any other PWHT method requires prior approval of customer before use 使用任何其它焊后热处理方法之前都要客户的批准 5 0HEATING AND COOLING RATES 加 热 和 冷 却 速 率加 热 和 冷 却 速 率 5 1 The rate of the heating at the temperature above 300 Deg C 572 F shall not exceed 220 Deg C 428 F Hr for pipe wall thickness up to and including 25mm 0 984in T maximum For maximum pipe wall thickness more than 25mm 0 984in T the heating rate shall be 5588 T Where T pipe wall thickness in mm 对于最大壁厚为 25mm 0 984in 的管道 300 572 F 之后的加热速度不应超过 220 428 F 小 时 对于最大壁 厚超过 25mm 0 984in 的管道 加热速度为 5588 T T 管道壁厚 mm 数 5 2 The rate of Cooling from the Soak temperature to a temperature above 300 Deg C 572 F shall not exceed 275 Deg C 527 F Hr For pipe wall thickness up to and including 25mm 0 984in T in maximum For maximum pipe wall thickness over than 25mm 0 984in T the Cooling shall be 6985 T Where T pipe wall thickness in mm Document No SW Q WQ05 Heat Treatment and PWHT ProceduresRevision 0 Revision Date 05 Mar 2014 Page6 9 对于最大壁厚为 25mm 0 984in 的管道 从均热温度冷却到 300 572 F 以上的速度不应超过 275 527 F 小 时 对于最大壁厚超过 25mm 0 984in 的管道 冷却速度为 6985 T T 管道壁厚 mm 数 6 0HOLDING TEMPERATURESANDALLOWABLERANGES 保温温度和容许范围保温温度和容许范围 6 1 Post weld heat treatment holding temperatures and times are specified on the Form 1 and or the Welding Procedure Specification WPS Additional limitations are imposed on the holding temperature range as stated below 表 1 和 或德焊接工艺规程中规定了焊后热处理的保温温度和时间 对于保温温度范围的额外限制如下所述 6 2 The holding temperatures are limited by Code requirements When the pipe thickness 20mm don t need to heat treatment or we perform heat treatment according our customer requirement 规范要求限制了保温温度 当管壁厚小于等于 20mm 时 不需要退火 或者按照客户要求进行热处理 6 3 For dissimilar P numbers refer to the Form 1 WPS and or the applicable code In general the heat treatment requirements for the higher P Number material should be used 如果部件编号不同 参考表 1 焊接工艺规程和 或适用的规范 一般来说 应当采用较高级编号的材料的热 处理要求 7 0INTERRUPTED POSTWELD HEAT TREATMENTS 不规则的焊后热处理不规则的焊后热处理 7 1 Interrupted postweld heat treatment is defined as decreasing below the minimum specified holding temperature or exceeding the maximum specified cooling rate and may be caused by loss of power equipment malfunction or operator error 不规则的焊后热处理被定义为降低至最小指定保温温度以下或超过最大指定冷却速率 可能是电源中断 设 备故障或操作失误导致的 7 2 For welds in which the postweld heat treatment temperature has dropped below the minimum holding temperature without exceeding the specified cooling rate actions should be initiated to restart the heat treatment as soon as possible 焊道焊后热处理温度降至最低保温温度以下 没有超过指定的冷却速率时 应当采取行动尽快重新开始热处 理活动 7 2 1 The weldment shall be reheated at a rate not to exceed that specified by the applicable Code and the holding temperature shall be reestablished The additional required holding time shall be calculated by finding time remaining to complete the postweld heat treatment from the first holding period The weld shall be held at temperature for this time period or for one half hour whichever is greater 应当以不超过适用规范指定的速率重新加热焊件 并且恢复保温温度 应当从第一保温阶段查明完成焊后热 处理剩余的时间 来计算需要的额外保温时间 应当对焊道保温此时间周期或者保温半个小时 两者取其大 7 3 For welds in which the maximum Code cooling rate was exceeded the postweld heat treatment shall be redone for both the entire holding period and cool down rate If an interrupted heat treatment occurs actions should be initiated to restart the heat treatment as soon as possible 如果超过了规定的最大冷却速率 应当针对整个保温阶段和冷却速率重新进行焊后热处理 如果发生了不规 则的热处理活动 应当采取行动尽快重新开始热处理活动 7 3 1 The weldment shall be reheated at a rate not to exceed that specified by the applicable Code and the holding temperature shall be reestablished The required holding time shall be that originally determined for the particular weld Upon completion of the holding period cool down shall be conducted within specified applicable Code limits 应当以不超过适用规范指定的速率重新加热焊件 并且恢复保温温度 保温时间应当是针对特定焊道规定的 原有保温时间 完成保温阶段后 应当在适用规范指定的限制范围内进行冷却 7 4 Interrupted postweld heat treatments shall be noted and explained on the charts and records 应当在图表和记录上标注和解释不规则的焊后热处理活动 7 5 During the PWHT cycle and during cooling all materials shall be cooled in still air protected from adverse weather conditions Document No SW Q WQ05 Heat Treatment and PWHT ProceduresRevision 0 Revision Date 05 Mar 2014 Page7 9 such as rain 焊后热处理及冷却过程中 所有材料应当在静止空气中冷却 避免不利天气条件比如下雨的影响 8 0TEMPERATURE CONTROLAND RECORDING 温度控制和记录温度控制和记录 8 1 Thermocouples installed the both side ofannealing furnace and the upper 热电偶安装在退火炉墙壁两侧和上部烟气 热风处 8 2 Thermocouple distribution diagram and annealing furnace size 热电偶分布示意图以及退火炉尺寸 Annealing furnace size 退火炉尺寸 14550mm L x 6100mm W x 4550mm H Burner configuration 燃烧器配制 Burner layout the both side of the furnace one side have 8 pieces total 16 pieces 炉两侧布置烧嘴 每侧 8 台 共计 16 台 Document No SW Q WQ05 Heat Treatment and PWHT ProceduresRevision 0 Revision Date 05 Mar 2014 Page8 9 9 0RECORDING POSTWELD HEAT TREATMENT CYCLE 焊后热处理记录周期焊后热处理记录周期 9 1Certificate of heat treatment curve drawn together by eight thermocouple temperature control area and using no pen and paper recorder USB output 出具的热处理曲线图由八个温控区的热电偶共同绘制而成 且采用无笔无纸记录仪 USB 接口输出 9 1 1 The holding temperature has been achieved and maintained for at least one half hour before the channel was lost 失去记录渠道之前 已经达到保温温度并维持了至少半个小时 9 1 2 The heating equipment and the control system continue to function properly 加热设备和控制系统继续正确地发挥作用 9 2 Multiple point temperature indicating recorders shall be used Recorders shall be calibrated in accordance with the manufacturer s standard service instructions at least once every six months or in accordance with jobsite procedures 应当使用多点温度记录仪 应当根据厂家的标准操作规程至少每半年一次对记录仪进行调校 或者遵照工 作现场的程序要求 9 3 A time temperature recorder chart shall be provided for each postweld heat treatment operation Each chart shall show the job unit system iso etc time and date started chart speed mm per hour name of operator and certifying signature of the QC Manager or his designee 应当提供每次焊后热处理作业的时间 温度记录表 每张图表应当显示作业内容 单元 系统 iso 图纸号等 热电偶的位置和数量 包括备用的 开始的时间和日期 图表记录速度 毫米每小时 操作员姓名以 及 QC 经理或其指定代表的认证签名