Common Process Problems and Solutions in Sheet Metal Machining

Ⅰ. Some process problems are often encountered during sheet metal machining

1. Door panels: Using the sheet metal machining method of wrapping the short sides with the long sides, and then opening the process holes at the corresponding corners. The size of the process holes is generally determined by the thickness of the board.

2. Welded parts: Using braces, holes, or convex hulls to position welding, shrapnel sheet metal factory. In some difficult-to-position welding, convex hull or hole positioning is generally used.

3. Electroplating parts: Generally, process holes should be added at the corners of the electroplating parts to facilitate the timely discharge of the electroplating solution, and precision sheet metal procurement to ensure quality.

The surface of the sheet metal workpiece should be free from obvious mechanical scratches and serious pull scars, and the flanging holes should be free of cracks; the surface should be clean, free of oil stains, no obvious dust, no black spots, no rust, no whitening, and no dezincification. The threaded hole thread on the surface of the galvanized sheet metal part should be vertical without tilting, the inner wall of the flanging hole of the precision sheet metal edge plate should be smooth, and the orifice should be free of burrs; No corrosion white spots, no corrosion black spots, no obvious scars.

Ⅱ. These common treatments of metal can be realized by sheet metal machining

The process of using various equipment to change the shape of metal sheets is called sheet metal processing. The main processes are shearing, bending, forming, welding, riveting, etc. of metal sheets. Parts that can also be processed by stamping, bending, stretching, etc., we can use to perform a series of treatments on metals.

Common handling:

1. Metal marking

Direct part marking is a range of techniques for permanent marking on metal for traceability of parts, industrial part labeling, decoration, or any other purpose. Marking can be achieved by a variety of techniques including engraving, embossing, die casting, stamping, etching, and grinding.

2. Metal engraving

Engraving is a technique mainly used to engrave patterns, words, drawings, or codes on metal surfaces to obtain products with permanent markings, or to use engraved metal to print engravings on paper. Engraving mainly uses two technical means: laser and mechanical engraving. Mechanical engraving can be done by hand, or by a more reliable pantograph or sheet metal machining in china.

Metal engraving technology can be used for: personalized jewelry, fine art, photopolymer, laser imaging, industrial marking technology, engraving sports competition trophies, printing plate making, etc.

3. Metal stamping

Metal stamping is not a subtractive machining process. It is the use of molds to fold metal sheets into various shapes. The household utensils we usually come into contacts with, such as pans, soup spoons, cooking pots, and plates, are processed by sheet metal machining. Punch presses are also used to make ceiling materials, medical equipment, machine parts, and even coins. Its products are widely used in medical, electronic, electrical, automotive, military, HVAC, air conditioning, pharmaceutical, commercial, and machinery manufacturing industries.

4. Metal grinding

Grinding is the physical grinding of a workpiece using a cutting tool (abrasive tool), typically for trimming rough edges, deburring, grinding welds, removing chips, producing sharp edges, or giving metal parts a unique finished appearance. Usually, grinding is the last operation after a part has been engraved, stamped, etched, or any other form of sheet metal machining.