Читать книгу Welding Metallurgy - Sindo Kou - Страница 62

Heat flow affects the microstructure and properties of the resultant weld and the residual stresses and distortion in the welded workpiece. This chapter deals with the heat source, heat flow in the workpiece, effect of welding conditions on heat flow, computer simulation of heat flow, and simulation of thermal cycles in small specimens by Gleeble.

It draws frequently on the work conducted at UW‐Madison, including measurements of the power inputs in gas‐tungsten arc welding (GTAW) and gas–metal arc welding (GMAW), measurements of the power‐density distribution in a gas−tungsten arc, and 3D computer simulation of heat flow in welding, which was subsequently extended to 3D computer simulation of heat and fluid flow in the weld pool.