What should be paid attention to when machining die forgings:

With the relatively stable change of the effective tension of hydraulic stamping, compared with the hydraulic forging press, the difference between the minimum and maximum effective stress is reduced, and the forging deformation uniformity of the forging hammer is improved. The die forgings of aluminum alloy piston are the blank area of the piston of the railway diesel locomotive, and are the main products developed by professional manufacturers in recent years. The forging design and improvement of the precision forging process are carried out. The successful production practice shows that there are good economic benefits.

At present, professional technicians have tested the hot compressibility of ultra-high strength steel, established a material flow tension model, and the finite element software is used to simulate the forging process of die forgings, and studied the influence of different process parameters on the forging formation. According to the practical results, it can be seen that the appropriate deformation temperature rise can effectively reduce the deformation resistance of materials, and improve the fluidity of materials in the mold cavity, Reducing the friction coefficient can reduce the conformational load, improve the formation area and make it easy to deform.

Through the direct aging treatment after forging, the effect of aging treatment on the microstructure and properties of high heat-resistant magnesium alloy isothermal die forgings was studied. Through understanding the fracture behavior related to the formation and treatment of the second phase during the strengthening aging process, the internal mechanism of strengthening aging and the optimized post-forging aging system were obtained. Under this aging system, the tensile strength of the material at room temperature reached the elongation of elastic resistance, Through the understanding of the internal structure of defects, the successful application of this method can provide a reference for the production of the same type of products.