Analyze the applicable fields and technical advantages of stamping hardware

1. Applicable fields of metal stamping dies (1) The automotive stamping parts are mainly drawn and punched. This part of our country is mainly concentrated in the automotive, tractor, aircraft manufacturing and supporting parts manufacturing industries, with many dimensions Parts companies, small stamping manufacturing companies, and independent large stamping and deep drawing companies are rare. (2) Electrical stamping parts have developed following the development of electrical appliances, and are mainly concentrated in enterprise-intensive areas such as southern electrical manufacturing and electrical housing stamping. (3) The stamping process of daily necessities makes some handicrafts, tableware, cooking utensils, etc. These enterprises are widely distributed in China and have developed rapidly in recent years. (4) Special stamping parts such as aviation parts, ship parts and other high-end workpiece stamping, etc., such enterprises have extremely strict process requirements, and they are generally large-scale enterprises. 2. Process requirements of metal stamping dies (1) When designing the structure and shape of the parts of metal stamping parts, the surface and combination of simple and reasonable structure should be adopted. At the same time, the number of processing surfaces and the processing area should be minimized as much as possible. (2) Choose a reasonable method of blank preparation in mechanical manufacturing, which can directly use profile, casting, forging, stamping and welding. The selection of the blank is related to the specific conditions, and generally depends on the production batch, material properties and processing possibilities. (3) Metal stamping performance requirements, the material should have good plasticity, small yield ratio, large plate thickness directivity coefficient, small plate plane directivity coefficient, and the ratio of the yield strength of the material to the elastic modulus should be small. (4) The process difficulty of metal stamping parts will increase with the improvement of accuracy, so high accuracy should not be pursued when there is no sufficient basis. Similarly, the surface roughness of metal stamping parts should also be appropriately specified according to the actual needs of the mating surface. 3. Process division of metal stamping dies The punching die is a tool that separates or deforms the sheet metal. It is composed of an upper die and a lower die. According to the die structure, the process can be divided into three types: simple stamping, continuous stamping and compound stamping. (1) Simple stamping is a stamping process that only completes one process in one stroke of the punch. It is a simple die for blanking or punching. (2) Continuous stamping is the process of completing several stamping processes on different parts of the mold at the same time in one stroke of the punching machine, and the feed distance is controlled by the stopper pin each time. (3) Compound stamping is to complete several stamping processes on the same part of the mold at the same time in one stroke. The biggest feature of compound stamping is that there is a convex and concave die in the mold. The compound die is suitable for stamping parts with large batches and high precision. Fourth, the selection method of precision stamping oil Stamping oil has played a key role in the stamping process. Good cooling performance and extreme pressure and wear resistance have made a qualitative leap in the service life of the mold and the improvement of the accuracy of the workpiece. Depending on the material of the workpiece, the performance focus of the stamping oil is different when it is selected. (1) Silicon steel plate is a material that is relatively easy to punch. Generally, for the ease of cleaning of the finished product, low-viscosity punching oil is used on the premise of preventing punching burrs. (2) When selecting stamping oil for carbon steel plates, the first thing you should pay attention to is the viscosity of the drawing oil. The best viscosity is determined according to the difficulty of processing, the method of drawing oil and the degreasing conditions. (3) Because of the chemical reaction with chlorine-based additives, when selecting stamping oil for galvanized steel sheets, attention should be paid to the problem of white rust that may occur in the chlorine-based stamping oil. The use of Yida Borun sulfur stamping oil can avoid the problem of rust. , But should be degreased as soon as possible after stamping. (4) Stainless steel is a material that is prone to work hardening. When stamping stainless steel plates, drawing oil with high oil film strength and good sintering resistance is required. Generally, Yida Borun special punching oil containing sulfur and chlorine compound additives is used to avoid problems such as burrs and cracks on the workpiece.