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Problems to Be Aware of When Cutting Galvanized Steel Sheet
What should you pay attention to when cutting galvanized steel roofing sheets?
Galvanized steel roofing sheets are subjected to various processes such as shearing, bending, and molding depending on the application. Since the surface of the steel sheet has a zinc layer and an organic coating, there are many places different from ordinary cold-rolled steel coils during processing, and special care must be taken to prevent damage to the coating film during processing. Factors affecting shearing include:
1. Mechanical properties of the material;
2. The shape and clearance of the tool;
3. Friction and lubrication of the tool surface;
4. Processing speed and temperature.
Special attention should be paid to the following when cutting galvanized steel roofing sheets:
1. The burrs of the cut surface should be made as short as possible to prevent the galvanized steel roofing sheets from scratching each other when shearing and stacking;
2. Remove the chips and metal powder generated during the cutting in time, otherwise, it will damage the surface of the steel plate and become the root of scratch or corrosion rust;
3. When the galvanized steel roofing sheet is cut, the roller that is in contact with the galvanized steel roofing sheet should be a rubber roller or other materials. The table surface that is in contact with the galvanized steel roofing sheet should be covered with a rubber pad and kept clean to prevent damage to the galvanized steel roofing plate coating film.