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Precision Auto Parts

Take you know metal stamping parts processing cracking reasons and solutions

by:Fortuna     2021-01-30
The production of metal stamping parts, need through multi-channel process flow, if not taken in the operating process, is likely to cause adverse phenomenon, such as metal stamping parts crack, influence the normal use of the products. Metal stamping parts introduce the author analysis for everybody below the reasons for cracking and prevention methods. A, metal stamping parts appear crack reason: 1, the local tensile stress is too large stamping parts stamping parts processing production process due to the large local tensile stress, affected by the internal stress and external shocks, the result of the local big bulging deformation and cracking. 2, the forming process parameter execution does not reach the designated position, in the process of stamping forming process requirement core die, die material and parts of the two must fit closely together, in the machine tool slide block slide compression sheet metal forming, plastic deformation and realize processing technical personnel not according to process requirements specified in this one phase in a timely manner to adjust machine pressure, work is not stable, caused by stamping craze. 3, flanging forming mould design flaws hardware stamping mould for a double cavity left/right public, due to this process content in addition to the flanging, also have both shape forming content, combined with the special complex parts, curved surface is narrow, the forming requirements concave die core material consistent with the forming surface and so on, cause mould structure conditions for forming large travel, pressure area is small, appear cracking phenomenon. 2, metal stamping parts to prevent cracking methods: 1, metal stamping parts, deep drawing process, drawing direction as far as possible to make the surface contact between the punch and the blank, the reasonable material surface shape and blank-holder force so that each part of the material surface resistance even moderately, to reduce the drawing depth, open hole and process, etc. 2, the structure design of metal stamping parts: in the design, the best radius is larger, surface shape in the direction of the deep drawing actual some shallow depth, everywhere and even some depth, shape changes as simple as possible and as far as possible some gentle etc. 3, metal stamping die design: can take drawbead design reasonable, using a larger die fillet, make reasonable measures such as punch and die clearance. Metal stamping parts in the process of machining, there will be many faults such as craze, these needs reasonable design, the careful operation, can prevent to reduce hardware stamping adverse phenomenon, improve the quality of the product. 【 Relevant recommendation 】 Details: how much do you know the new energy automotive stamping parts? Details: sharing details of stamping processing industry: precision metal stamping parts figure how to draw, please be aware that this several steps
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