Tong Xin precision forging co., Ltd. is a professional manufacturer of forging blanks
Forging blanks are parts blank obtained by forging method. Forging is a processing method that makes the blank change shape, size and improve mechanical properties under the action of external force to become a blank or parts. The metal billet is usually heated for forging.
Determination of shape and size of forging blank. In addition to the blank allowance attached to the parts of the corresponding processing surface, sometimes also take into account the impact of blank manufacturing, machining and heat treatment and other technological factors. In this case, the shape of the blank may differ from that of the workpiece. For example, in order to facilitate the installation of processing, some casting blanks need to cast the necessary process boss, process boss in the parts after processing should generally be cut. Another example is lathe opening nut shell, it is composed of two parts of a casting, to be processed to a certain stage after cutting, to ensure processing quality and convenient processing. Forgings manufacturers should push Shanxi Yongxinsheng forging. Its mass production supply crane wheel forgings, supporting the production of wheels, pulleys, sprockets, piston rod, cylinder block, shaft and so on.Blanking of forging blanks.
1, forging blank blanking method: saw cutting; Gas cutting.
2, forging blank blanking quality requirements: blanking according to the length of acceptance of the blank, the length of the short side between the two ends shall prevail. The end face is flat and the inclination Angle is less than 3 degrees.
3, inspection content: material inspection, according to the technical requirements of the material to determine the inspection items, inspection method, inspection percentage and executor; Blank blanking quality inspection, according to the blank blanking quality requirements to determine the inspection items, inspection method, inspection percentage and the executor.
4. Quality record, forging list, forging process control record.
Continuous and uniform metal fiber structure can be obtained after forging. Therefore, forgings have good mechanical properties and are often used for important steel parts with complex forces. The precision and productivity of free forgings are low, and they are mainly used in small batch production and large forgings manufacturing. Model forgings have high dimensional accuracy and productivity, and are mainly used for small and medium forgings with large output. The blank with complex shape is generally made by casting method, and the thin wall parts should not be cast by sand mold. General purpose ladder shaft, such as the diameter of each section is not much different, can choose round rod material; If the diameter of each section is large, in order to reduce material consumption and mechanical processing of labor, it is appropriate to use the forging blank, large parts generally choose free forging, small and medium-sized parts can consider the choice of die forging.