Detailed description of the steps of processing stainless steel parts in Anhui
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    Anhui stainless steel processing needs to define a drawing, because the division and operation of Anhui stainless steel processing need to have clear regulations, according to the development map and batch size, choose different blanking methods, including laser, CNC punching, shearing, mold, etc. The way, then according to the drawings to make the corresponding expansion. Next, we can carry out the corresponding process operations according to the drawings, which are mainly divided into the following points:
    First, select the blanking material. After the completion, enter the next process, and the different workpieces enter the corresponding process according to the processing requirements. There are bending, riveting, flanging tapping, spot welding, convex hull, step difference, sometimes the nut or stud should be pressed after bending one or two times, where the mold is convex and the difference is considered. First processing, so as to avoid interference in other processes after processing, can not complete the required processing. When there is a hook on the upper or lower case, if it cannot be welded after bending, it should be processed before bending.
    Second, when the stainless steel pieces Anhui bending tool according to first sipe and the dimension in the drawing, the thickness of the material is determined by the bend, to avoid product and the tool deformation due to the collision with the upper mold is chosen critical (in the same In the product, different types of upper molds may be used. The selection of the lower mold is determined according to the thickness of the sheet. The second is to determine the order of bending, the general rule of bending is first inside and outside, first small and then large, first special and then ordinary. The workpiece to be crushed is first bent to 30 ° - 40 ° , and then the workpiece is crushed by the flattening die.
    Third, when Anhui stainless steel parts are pressed and riveted, the same different molds should be selected according to the height of the studs, and then the pressure of the press should be adjusted to ensure that the studs and the workpiece surface are flush, and the studs are not pressed or pressed. Exceeding the surface of the workpiece, causing the workpiece to be scrapped. Welding has argon arc welding, spot welding, carbon dioxide protection welding, manual arc welding, etc. Spot welding must first consider the position of the workpiece welding. In the mass production of stainless steel stainless steel , consider positioning tooling to ensure accurate spot welding position.
    Fourth, in order to weld firmly, the bumps on the workpiece to be welded can make the bumps evenly contact with the flat plate before the electric welding, so as to ensure the uniform heating of each point, and also determine the welding position, the same, to be carried out For welding, it is necessary to adjust the pre-pressing time, dwell time, maintenance time, and rest time to ensure that the workpiece can be spot-welded firmly. After spot welding, the surface of the workpiece will be welded. It should be treated with a flat mill. The sub-arc welding is mainly used when the two workpieces are large, and they are connected together, or the corners of a workpiece are processed to achieve the smoothness of the surface of the workpiece. ,smooth. The heat generated during the sub-arc welding is easy to deform the workpiece, and is treated by a sander and a flat mill after welding, especially in the corners.
  Fifth, the workpieces of Anhui stainless steel parts shall be surface treated after the completion of the bending, pressing and riveting processes. The surface treatment of different sheet materials is different. After the cold plate processing, the surface plating is generally carried out. After the plating, the spraying process is not carried out. Phosphating treatment is carried out, and spraying treatment is carried out after the phosphating treatment. The plated surface is cleaned, degreased, and then sprayed. Stainless steel plate (with mirror panel, fog panel, drawing plate) can be drawn before bending, without spraying, if it needs to be sprayed, it should be roughened; aluminum plate is generally treated with oxidation, and different colors are selected according to different colors of spraying. Oxidation background color, commonly used black and natural oxidation; aluminum plate needs to be sprayed for chromate oxidation treatment and sprayed. The surface pretreatment can make the cleaning surface significantly improve the adhesion of the coating film and double the corrosion resistance of the coating film. The cleaning process first cleans the workpiece, first hangs the workpiece on the assembly line, first through the cleaning solution (alloy de-oil powder), then into the clean water, then through the spray zone, then through the drying zone, and finally the workpiece from the assembly line Take it down.
    Sixth, Anhui stainless steel parts are processed into the spraying process after the surface is pre-treated. When the workpiece is required to be assembled after spraying, the teeth or part of the conductive holes need to be protected. The dental holes can be checked into soft glue sticks or screwed in. It should be affixed with high-temperature tape, and the positioning tool should be positioned in large quantities to protect the inside of the workpiece. The nut (flange) hole visible on the outer surface of the workpiece can be protected by screws to avoid the workpiece after spraying. The back of the nut (flanged) hole is required. Some large-volume workpieces also use tooling protection; when the workpiece is not assembled, the area that does not need to be sprayed is blocked with high-temperature tape and paper, and some exposed nuts (studs) are protected by screws or high-temperature rubber. If the workpiece is sprayed on both sides, protect the nut (stud) hole in the same way; small workpieces are sprayed with lead wire or paper clips, etc.; some stainless steel workpieces have high surface requirements, and must be scraped before spraying; some workpieces Protected with a special high temperature sticker at the grounding symbol. When spraying, the workpiece is first hung on the assembly line, and the surface of the surface is blown off with dust. After entering the spraying area, spray, after the spraying, enter the drying area along the assembly line, and finally remove the sprayed workpiece from the assembly line. There are also two types of manual spraying and automatic spraying, which makes the tooling different.
    Finally, after the spraying, enter the assembly process. Before assembly, the protective sticker used in the original spraying should be torn off to make sure that the threaded hole in the part is not sprinkled with paint or powder. In the whole process, wear gloves to avoid the hand. Dust is attached to the workpiece, and some workpieces are blown clean with ** . After assembly, the product enters the packaging process. After the workpiece is inspected, it is placed in a special packaging bag for protection. Some workpieces without special packaging are packaged with a bubble film, and the bubble film is cut into a size that can be packaged before packaging. In order to avoid one side of the package cutting, affecting the processing speed; bulk large can be customized special carton or bubble bag, rubber pad, tray, wooden box and so on. After packaging, put it into the carton, and then put the corresponding finished or semi-finished label on the carton.
    Therefore, the quality of Anhui stainless steel parts is strictly required in the production process, that is, it needs to be independent of the quality inspection of the production. First, the dimensions are strictly controlled according to the drawings. Second, the quality of the appearance is strictly checked, and those who do not conform to the size are reworked or scrapped. The appearance is not allowed to be scratched, and the color difference, corrosion resistance, and adhesion after spraying are tested. This can find unfolding errors in the process of stainless steel processing, bad habits in the process, errors in the process, such as several programming errors, mold errors and so on.