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What are the hardware stamping processes available?
12-31 / 2021

1、 Performance requirements for precision metal stamping parts


(1) Precision requirements for stamping parts




In order to meet the precision requirements of stamping parts, the number of processes needs to be determined through stamping process calculation, as it is not only related to factors such as material properties, drawing height, and drawing steps, but also involves conditions such as drawing diameter and material thickness.




(2) Refinement requirements for stamping parts




Regarding the refinement requirements for stamping parts, the number of processes mainly depends on the complexity of their structural shape. Therefore, it is necessary to comprehensively consider factors such as the number of bending angles, relative positions, and bending directions before determining them.




(3) Exquisiteness requirements for stamped parts




When stamping parts meet the requirements of precision and precision, the exquisite degree of the workpiece becomes a new process standard. When the cross-sectional quality and dimensional accuracy requirements of stamped parts are high, it can be considered to add a trimming process after the punching process, or directly adopt a precision punching process to obtain exquisite stamped parts and increase their value.




2、 Manufacturing process of precision metal stamping parts




(1) Draw part drawings




Analysis of parts and their stamping process: Based on the stamping part drawings, analyze the shape characteristics, size, accuracy requirements, raw material size specifications, and mechanical properties of the stamping parts. Combined with the available stamping equipment specifications, mold manufacturing conditions, production batch, and other factors, analyze the stamping process of the parts.




(2) Determine the process plan




The calculation of main process parameters is based on the analysis of stamping process, and a comprehensive analysis is conducted from the aspects of equipment occupancy, difficulty and lifespan of mold manufacturing, ease of operation and safety. The characteristics and difficulties of process and mold design are identified, including process properties, number of processes, sequence and combination methods, and the best solution suitable for existing production conditions is determined.




(3) Set process parameters




Process parameters refer to the data based on which the process plan is formulated, such as various forming factors (drawing coefficient, bulging coefficient, etc.), part unfolding size, punching force, forming force, etc. There are two situations for calculation. The first is that process parameters can be calculated more accurately, such as material utilization rate of part layout, punching pressure center, workpiece area, etc; The second type is that process parameters can only be used for approximate calculations, such as general bending or deep drawing forming forces, complex component blank unfolding dimensions, etc.




(4) Select stamping equipment




The selection of stamping equipment is based on the nature of the stamping process to be completed and the force and energy characteristics of various stamping equipment. The main factors required for stamping processing, such as deformation force, deformation work, mold closure height, and contour size, are considered, and the equipment type and tonnage are reasonably selected based on the existing equipment situation of the enterprise.




3、 Selection of Precision Hardware Stamping Oil




Stamping oil plays a crucial role in the stamping process, and its good cooling performance and extreme pressure and wear resistance have made a qualitative leap in improving the service life of molds and workpiece accuracy.




(1) Selection of stamping oil for low-carbon steel plates




When selecting stamping oil for carbon steel plates, the first thing to pay attention to is the viscosity of the stretching oil. Determine the optimal viscosity based on process difficulty and degreasing conditions.




(2) Selection of stamping oil for galvanized steel plate




Due to the chemical reaction with chlorine based additives, electroplating


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