Welding.ppt

definition classification material crafts What is the definition of a welding? The welding process is two or more than two kinds of homogeneous or heterogeneous materials with the atoms or molecules and diffusion are connected into a whole.焊接是两种或两种以上同种或异种材料通过原子或分子之间的结合和扩散连接成一体的工艺过程. Fuse welding 熔焊 Pressure welding 压力焊 Braze 钎焊 Fuse welding 熔焊 Pressure welding 压力焊 Braze 钎焊 Welding wire焊丝 As a filler metal when welding or at the same time as conducting wire welding material used. 焊接时作为填充金属或同时作为导电用的金属丝焊接材料。 焊剂(welding flux) 钎剂 When welding, capable of melting slag and gas formation, a material protection and metallurgical(冶金) processing of molten metal. 焊接时，能够熔化形成熔渣和气体，对熔化金属起保护和冶金处理作用的一种物质。 THANK YOU! * * * Welding Fusion welding, refers to the welding process,the welded joint is in under the action of high temperature and so on to molten state. 所谓熔焊，是指焊接过程中，将焊接接头在高温等的作用下至熔化状态。 Using a certain pressure and welding to complete welding method. 利用焊接时施加一定压力而完成焊接的方法。 Than the base metal of low melting point metal materials used as filler, fill with liquid solder wetting material and workpiece interface gaps and align it with base metal diffusion welding method. 用比母材熔点低的金属材料作为钎料，用液态钎料润湿母材和填充工件接口间隙并使其与母材相互扩散的焊接方法。 Fuse welding Pressure welding Braze Welding Gas welding Arc welding Electroslag welding Plasma welding Resistance welding Friction welding Soldering iron soldering Flame brazing Salt bath brazing Manual arc welding Automatic arc welding Butt welding Spot welding Seam welding * *