Honda Car are becoming more and more complex, with more and more varieties, and the market size is also growing. As various industries have increasingly higher requirements for quality and precision, how to ensure quality has become a key factor. There are many reasons for defective stamping parts. Stamping material selection, stamping operations, on-site equipment loading and unloading, etc. may also damage stamped parts. Therefore, details should be fully considered throughout the manufacturing process to avoid quality problems as much as possible. Petrol Car manufacturers said that the scrap rate of Honda vehicles directly affects the profit margin of stamped parts. The reasons for the high scrap rate of parts are not complicated. Here are the causes and solutions to stamping scrap:
① The quality of purchased steel does not meet national standards, such as unstable material, poor size, and unqualified surface accuracy; iron powder produced during the coil cutting process; burrs on the coil section after cutting; and dust when storing or transporting circuit boards.
② Improper installation and use of stamping dies;
③ The stamping workers did not strictly install the positioning device to feed materials during the operation;
④ After the mold is used for a long time, the gap becomes larger or the mold parts are worn, causing waste; due to uneven stress. Poor fit of the stretch ribs or poor control of the compressor slider causes the part's R corner to be bent or partially embossed. There are some twists and turns.
⑤ Since the mold needs to withstand huge impacts during the stamping process, bolts or other accessories may become loose, affecting the normal production of the entire mold;
2. Solution
① When purchasing raw materials, Petrol Car manufacturers need to strictly comply with national standards for selection. When factory conditions permit, the composition of the steel should be tested. Surface roughness. Dimensional accuracy. Qualified raw materials are the prerequisite for ensuring the quality of stamping parts. When purchasing raw materials, try to choose products from regular steel dealers or large steel plants;
②After the stamping process design is completed, stamping workers need to operate in strict accordance with the process specifications. Each stamping product has a different stamping process, which requires the manager to formulate the process rules of the product before processing the product;
③ The punches and stamping dies used in the factory should always be in stable operation, and the punches and stamping dies should be regularly maintained; the inspection and correction of the drawing dies require regular inspection and maintenance to reduce the occurrence of bulges and maintain their stability.
④ Develop a complete quality inspection system. The first batch of products should be fully inspected before formal production, and regular sampling inspections should be carried out during the production process; a common problem with the surface of parts in stamping production is unevenness, which is mainly due to dust or iron filings adhering to the surface of the material or mold. , reducing the surface quality and productivity of the parts.