AWSD1.1Rev.1美国焊接标准.ppt

AWS D1.1 Structural Welding Code-Steel Bureau Veritas 2 All rights reserved BV I ►(2) Steels less than 1/8 in. [3 mm] thick. 厚度小于3mm的钢材; ►(3) Pressure vessels or pressure piping 压力容器或压力管道; ►(4) Base metals other than carbon or low-alloy steels. 碳钢和低合金钢之外的材料 4 All rights reserved BV I all WPS qualifications or other tests that are made; and such other information as may be required. 46 All rights reserved BV I 根部间隙1/8 in. 51 All rights reserved BV I 有垫板 52 All rights reserved BV I 背部焊缝作为衬垫, 焊缝高度1/8 in. 53 All rights reserved BV I 坡口焊缝尺寸9/16 in.; 角焊缝尺寸 3/8 in. 54 All rights reserved BV I 适合电流类型为AC 或DCEP 55 All rights reserved BV I C – Composite 金属粉芯焊丝 X – 实芯焊丝的化学成分或金属粉芯焊缝金属的化学成分 如ER70S-6, 焊缝金属的最小抗拉强度为70ksi; 实芯焊丝; 焊丝化学成分为 C: 0.06-0.15; Mn: 1.40-1.85 等 56 All rights reserved BV I 咬边深度≤ 1mm; 余高≤3mm (4) The root of the weld shall be inspected, and there shall be no evidence of cracks, incomplete fusion, or inadequate joint penetration. A concave root surface is allowed within the limits shown below, provided the total weld thickness is equal to or greater than that of the base metal. 焊逢根部无裂纹, 未熔合, 未焊透等缺陷 (5) The maximum root surface concavity shall be 1/16 in. [2 mm] and the maximum melt-through shall be 1/8 in. [3 mm]. 根部表面最大凹度不超过2 mm 69 All rights reserved BV I 大于1mm但不超过3mm缺陷长度总和不超过 10mm; 弯角处裂纹缺陷最大不超过3mm, 当弯角处裂纹由夹渣等缺陷引起时, 最 大不超过6mm. 71 All rights reserved BV I 2) CJP 坡口焊缝覆盖角焊缝和PJP坡口焊缝; 3) 当有规定时, 应进行冲击试验, 要求如下 76 All rights reserved BV I 焊接方法FCAW, 焊丝 E71T-1; 保护气体CO2, 喷射过渡; 焊接位置2G; 焊接参数: 电流220-240A, 电压26-28V, 焊接速度30-33cm/min, 直 流反接. 预热: 最低0℃, 层间温度: 最高200℃; 冲击试验要求. 针对上述工艺评定, 编写相应的WPS. 80 All rights reserved BV I 最小焊角尺寸应满足规定要求; 无裂纹等 83 All rights reserved BV I 如果断裂, 根部应全熔合, 无大于2.5mm的气孔和夹渣; 150mm长度试样内, 夹渣和气孔总和不超过10mm. 84 All rights reserved BV I 焊接方法FCAW, 焊条A5.20 E71T-1; 3G 立向上; X坡 口, 双面焊; 保护气体100%CO2. 试验类型: 侧弯 针对以上内容编制相应的焊工证书 。