Common defects in the forging process
Poor quality of raw material and forging process when it is not carried out according to the right, often caused the forging of various quality issues. This not only to influence the forming, but also to influence the Organization and performance. In the forging process order, respectively, lists every process possible defects in the forging process, and briefly describes the main characteristics of various defects and causes: the main raw materials of forgings defects caused by defects and name the main character causes and effects of capillary cracks in metal surfaces, subtle crack depth of approximately 0.5~1.5mm. Metal rolling, to bubble under the skin in the ingot rolling long after formation of rupture. Before forging if it is not removed, there may be a crack of forging. Folding on the metal surface is as deep as 1mm, diameter folds on both ends in opposite directions. Lateral observation, folded with the arc tangent constitutes a point of, iron oxide inclusions in the creases, surrounded by carbon dioxide removal. V Groove incorrect sizing on the roll, or for Groove burrs in the rolling of the wear surface is involved in, leading to folding. Before forging if not removed, may cause forging folded. Scarring local area of a layer can be stripping of rolled film, of a thickness about 1.5mm.