Current location - Plastic Surgery and Aesthetics Network - Plastic surgery and beauty - Do you want to use expanded drawing for sheet metal engineering drawing? If so, it is necessary or optional to draw pictures. Not familiar with sheet metal?
Do you want to use expanded drawing for sheet metal engineering drawing? If so, it is necessary or optional to draw pictures. Not familiar with sheet metal?
It's not necessary. As long as the three views can clearly express all dimensions of sheet metal parts (including: length, width, height, fillet radius, angle, curved straight line segment, arc size, etc.). All dimensions related to processing). When conditions permit, the expansion length or expansion diagram can be given.

If the competent person has his own technical department to handle the customer's drawings, some small factory workers will do it according to their experience, but it should not be too complicated. There are professional sheet metal processing equipment such as laser cutting machine imported from Germany, with good quality.

Extended data:

The base material of galvanized steel sheet SECC is common cold-rolled steel coil, which becomes galvanized products after degreasing, pickling, electroplating and various post-treatment processes on the continuous galvanizing production line.

SECC not only has the mechanical properties and approximate machinability of common cold-rolled steel plates, but also has excellent corrosion resistance and decorative appearance. It has great competitiveness and substitution in the markets of electronic products, household appliances and furniture. For example, SECC is widely used in computer chassis.

Hot-dip galvanized steel sheet SGCC hot-dip galvanized steel coil refers to the semi-finished products after hot rolling, pickling or cold rolling, which are washed, annealed and immersed in molten zinc bath at a temperature of about 460℃ to coat the steel sheet with a zinc layer, and then tempered, leveled and chemically treated. SGCC material is harder than SECC material, with poor ductility (avoiding deep drawing design), thicker zinc layer and poor weldability.

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