Analysis of Welding Process Measures for Fan Impeller Manufacturing
Analysis of the welding process measures for the manufacture of the fan impeller, precise positioning of the tooling and welding of the central bushing. The special welding tool is designed, and the impeller is firmly fastened to the template of 40 mm thick by the fastening system of the special welding tool. The fastening system is divided into two parts. One is that the eight blades around the impeller are bolted to the template by eight concave blocks, and the other is that the center of the impeller is fastened by bolts with the roots of eight blades. On the template. The purpose of designing special tooling is to control the impeller welding deformation to a minimum within the range of mechanical fastening, so that the impeller does not need to undergo strong mechanical correction after welding, and the impeller size requirements can be met after normal machining. The test results show that the use of special tooling plays an important role in solving the deformation of the impeller in welding, but it is still difficult to achieve the above purpose simply by tooling, because the edge of the impeller is spot welded to the template before using the tooling. However, all the spot welds after the blade is welded are all pulled and removed, indicating that further measures are needed in other aspects such as the welding process. Analysis of the heat dissipation control of the welding process, the thermal conductivity of the precision welded pipe austenitic stainless steel is poor, the temperature of the weldment rises rapidly during the welding process, and the high temperature causes high linear expansion to deform the weldment, so the welding temperature is important for causing deformation. factor. To this end, a water-cooling process has been developed to control the temperature of the weldment: the special tooling and the impeller floor are placed in a container with water, and the bottom of the impeller is mostly immersed in water, so that the high temperature generated by the welding can spread in the water in time. At the same time, the cooling water is in a flowing state to carry the heat away more quickly. The water cooling process effectively reduces the temperature of the weldment, reduces the thermal stress of the impeller welding, and plays an extremely significant role in reducing the weld deformation of the impeller. Petg Jars,Plastic Petg Jars,Cosmetic Cream Petg Jar,15Ml Petg Jar Zhejiang Xinlei Packaging.Co.Ltd.(China) , https://www.xinleipack.com