Stainless steel forgings refer to objects in which stainless steel materials are subjected to pressure and plastic deformation to create the required shape or appropriate compression force. This force is typically achieved through the use of a hammer or pressure. Forging can eliminate defects such as loose as-cast metal produced during the smelting process and optimize the microstructure. At the same time, due to the preservation of metal streamlines, the mechanical properties of forgings are generally better than castings of the same material.
The preparation before forging stainless steel forgings includes raw material selection, material calculation, blanking, heating, calculation of deformation force, equipment selection, and mold design. Before forging stainless steel forgings, you need to choose a good lubrication method and lubricant.
Forging materials involve a wide range of materials. As we all know, the quality of products is often closely related to the quality of raw materials. Therefore, forging workers must have the necessary material knowledge and be good at selecting the best materials according to process requirements. Suitable materials.
Material calculation and blanking are one of the important links to improve material utilization and achieve blank refinement. Excess material not only causes waste, but also increases die cavity wear and energy consumption. If there is no allowance left when cutting materials, it will increase the difficulty of process adjustment and increase the scrap rate. In addition, the quality of the blanking end face also affects the process and the quality of stainless steel forgings.
The purpose of heating is to reduce forging deformation force and improve metal plasticity. However, heating also brings a series of problems, such as oxidation, decarburization, overheating and overburning. Accurately controlling the initial and final forging temperatures has a great impact on the product structure and performance.
Flame furnace heating has the advantages of low cost and strong applicability, but it takes a long time to heat and is prone to oxidation and decarburization. The working conditions also need to be continuously improved. Electric induction heating has the advantages of rapid heating and less oxidation, but it has poor adaptability to changes in product shape, size and material.
Forging is formed under the action of external forces. Therefore, the correct calculation of deformation force is the basis for selecting equipment and performing mold calibration. Stress and strain analysis inside the deformed body is also indispensable for optimizing the process and controlling the microstructure and properties of stainless steel forgings.