Screw repair

1. For the broken screw, it is necessary to carefully check whether the barrel is seriously damaged. If the barrel can continue to be used, it should be considered according to the actual inner diameter of the barrel, and the outer diameter deviation of the new screw should be given according to the normal clearance of the barrel. manufacture.

2. After the surface of the thread with the reduced diameter of the wear screw is treated, the wear-resistant alloy is thermally sprayed, generally thickened at 2-3 mm, and then ground to size. This method is generally repaired by professional screw barrel manufacturers.

3. Surfacing the wear-resistant alloy on the threaded portion of the wear screw. Build 1 to 2 mm thick according to the degree of screw wear, and then grind the screw to size. This wear-resistant alloy consists of materials such as C, Cr, Vi, Co, W and B, which increases the anti-wear and corrosion resistance of the screw. Professional surfacing plants have a high cost for this type of processing, and are rarely used except for special requirements.

4, repair screw can also be surface hard chrome plating method, chromium is also wear-resistant and corrosion-resistant metal, but the hard chrome layer is easier to fall off.