关于WPS焊接工艺规程的解释.pptxVIP

Welding procedure specification (WPS) 焊接工艺规范 Kevin Mo;What is a WPS?什么是焊接工艺规范(WPS)?;What is included by a WPS?WPS 的内容;Who take charge of compiling WPS?WPS应该由谁制定?;Availability of the WPS WPS的可得性;Authorized by AI 授权检验师检查;;;Weld Process Selection焊接工艺选择;Variables 焊接变素;Essentials listed in AWS D1.1 AWS 对各种焊接方法重要变素的规定; Essentials in GMAW or FCAWGMAW and FCAW中的重要变素(AWS);Electrical parameters焊接参数 A change in the amperage for each diameter每种焊丝直径的电流变化超过10％ A change in type of current (ac or dc) or polarity and mode of transfer (GMAW only)电流极性变化或GMAW过渡模式变化 A change in the voltage for each diameter，surpass 7%电压改变超过7％ An increase or decrease in the wire feed speed for each electrode diameter surpass 10%送丝速度改变超过10％;A change in the travel speed surpass 25%焊接速度改变超过25％ An increase in heat input surpass 10%热输入增加超过10％ Shielding gas保护气 A change in shielding gas from a single gas to any other single gas or mixture of gas, or in the specified nominal percentage composition of a gas mixture, or to no gas保护气从单种气体变为其它单种气体或混合气体 ;A change in total gas flow rate气体流量增加大于50％或减小超过20％ A change to a shielding gas not covered in。改变为不包含在AWS A5.18,5.28,A5.20,A5.29中的保护气。 General 一般条件 For the PQR groove area, an increase or decrease 25% in the number of passes 对于与PQR坡口面积相同的，焊道数改变超过25％ A change in position not qualified焊接位置改变为未经评定的位置。 ;A change in diameter, or thickness, or both, not qualified by Table 2工件直径或厚度未在评定范围之外。 A change in base metal or combination of base metals not listed on the PQR 母材未经评定 Vertical Welding: For any pass from uphill to downhill or vice versa立焊：任何焊道从上到下焊接或相反 A change in groove type (e.g., single-V to double-V), 坡口形式变化（例如，单V到双V) ;A change in the type of groove to a square groove and vice versa从任何坡口形式改变为直边或相反 A change exceeding the tolerances, including decreasing of groove angle, decreasing of root opening, increasing of root face.坡口角度减小，坡口间隙减小以及钝边增加超过公差范围 The omission, but not inclusion, of backing or back gouging取消衬垫或清根 Decrease from preheat temperature6 by 15 Ce