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Many factors affecting the quality of automotive stamping parts

by:Fortuna     2021-03-05
Auto stamping parts processing manufacturers, in the production of automotive stamping parts, will encounter large and small problems, how to ensure the quality of stamping parts, and what are the factors that affect the quality of automotive stamping parts? Let’s take a look; 1. Among the factors that affect the quality of automotive stamping parts, the influence of the mold structure is very large. The forming effect of the deep drawing stamping part is related to the radius of the cavity, the cavity of the cavity, the geometric shape, and the mold guiding method. A great relationship; 2. In the stamping die, the radius of the convex and concave die plays an important role in the drawing part. When the punch radius is too small, the straight wall and the bottom of the blank will be bent and deformed, and the strength of the dangerous section will be weakened. If the radius of the die is too small, the tensile stress on the side wall of the blank will increase accordingly. These two conditions will increase the drawing coefficient and the deformation resistance of the plate, which will lead to an increase in the total drawing force and a decrease in the life of the die; 3. If the punch Or if the mold radius is too large, the deformation resistance of the sheet material is small, and the fluidity of the metal is good, but it will reduce the effective area of u200bu200bthe blanking material and make the parts easy to wrinkle. Therefore, when determining the radius of the punch and the die, the deformation characteristics of the workpiece and the drawbead must be considered. 4. The working parts of different shapes of molds will also affect the quality of the deep-drawn parts. The die is divided into two types: flat die and conical die. The use of a conical mold usually makes the deformation zone of the blank have a greater resistance to instability, and allows a relative thickness (t/D) relative to the flat-end mold. Smaller blanks will not wrinkle. 5. The guiding of the drawing die includes two directions: punch and blank holder, blank holder and blank holder. The rationality of the mold guide rail directly affects the reliability of drawing. A reasonable and stable guide rail can ensure the uniformity of the die circumferential gap and the coordination of the drawing surface, thereby ensuring the quality of the drawn parts. Recommended article: Some common problems encountered in the processing of metal stamping parts Previous: The characteristics of the low-waste die used in the processing of stamping parts
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