LCDT-PX03-5-新进员工培训-焊接缺欠基础-李西西.ppt

焊接缺欠认识 李西西 依据标准：ISO6520-1 金属熔焊中的缺陷等级分类和解释 Welding and allied processes – Classification of geometric imperfections in metallic materials – Part 1: Fusion welding (ISO 6520-1 : 1998); 缺欠种类 种类1：裂纹Cracks 种类2：气孔Cavities 种类3：夹杂Solid inclusions 种类4：未熔合与未焊透Lack of fusion and penetration 种类5：外形及尺寸缺陷（几何缺陷）Imperfect shape and dimensions 种类6：混合（多重、其它）缺陷Miscellaneous imperfections 种类1：裂纹Cracks 纵向裂纹 Longitudinal crack 缺陷代号 种类1：裂纹Cracks 横向裂纹 Transverse crack 种类1：裂纹Cracks 辐射状裂纹 Radiating cracks 种类1：裂纹Cracks 弧坑裂纹 Crater crack 种类1：裂纹Cracks 团组裂纹 Group of disconnected cracks 种类1：裂纹Cracks 分支裂纹 Branching cracks 种类2：气孔Cavities 单个气孔 Gas pore 种类2：气孔Cavities 密集气孔 Uniformly distributed porosity 种类2：气孔Cavities 网状气孔 Clustered (localized) porosity 种类2：气孔Cavities 线状气孔 Linear porosity 种类2：气孔Cavities 条状气孔（气道） Elongated cavity 种类2：气孔Cavities 条虫状气孔 Worm-hole 种类2：气孔Cavities 表面气孔 Surface pore 种类2：气孔Cavities 晶间收缩 Interdendritic shrinkage 种类2：气孔Cavities 弧坑孔穴 Crater pipe 种类2：气孔Cavities 收弧孔穴 End crater pipe 种类2：气孔Cavities 其它孔穴： Microshrinkage Interdendritic microshrinkage Transgranular microshrinkage 种类3：固体夹杂Solid inclusions 夹渣 Slag inclusion 种类3：固体夹杂Solid inclusions 3014网状夹渣 clustered 其它夹杂 302焊剂夹杂Flux inclusion 303氧化物夹杂Oxide inclusion 304金属物夹杂Metallic inclusion（钨夹杂tungsten、铜夹杂copper、其它金属夹杂other metal） 种类4：未熔合与未焊透Lack of fusion and penetration 未熔合/Lack of fusion (不完全熔合incomplete fusion) 4011:lack of side wall fusion 4012:lack of inter-run fusion 种类4：未熔合 未熔合/Lack of fusion 4013:lack of root fusion. 种类4：未焊透 402:Lack of penetration (incomplete penetration) 种类4：未焊透 实际熔深 名义/要求的熔深 种类4：未焊透 种类4：未焊透 4021:Incomplete root penetration 种类4：未熔合与未焊透 403:Spiking 形成尖峰状 Extremely non-uniform penetrationoccuring in electron beam and laser welding giving a sawtooth appearance. This may include cavities, cracks, shrinkages etc.相当不一致的焊透发生在电波和激光焊接中，呈现出锯齿的样子，也许包括洞穴、裂纹、收缩等等 种类5：外形及尺寸缺欠（几何缺欠） Imperfect shape and dimensions 501:咬边Undercut 5011:连续咬边Continuous undercut 种类5：几何缺欠 5012:In