The service life of metal stamping parts molds is related to many factors such as mold structure design, mold steel selection, heat treatment, surface treatment, machining and grinding, wire cutting technology, stamping equipment, stamping materials and technology, mold lubrication, poor maintenance and repair. Among the various factors that cause mold failure, unfair mold structure and improper material selection accounted for about 25%, improper heat treatment accounted for about 45%, process problems accounted for about 10%; equipment problems, slippery problems and other factors accounted for about 20%. Pay attention to maintenance after installation of gold stamping parts to prevent rust and corrosion. In daily use, lightly close and open lightly to prevent hard closing and hard opening, which may cause damage. The following is an introduction on how to prevent damage to metal stamping parts:

　　 1. The models, specifications and functions of hardware fittings should conform to the current national standards and relevant regulations, and match the selection of plastic steel doors and windows.

　　2. For sliding windows with a width of more than 1 meter, or double-glazed doors and windows, it is advisable to install double pulleys or use movable elastic pulleys.

　　 3. The sliding hinge shall not be made of aluminum alloy, but shall be made of stainless steel.

　　4. Use fastening screws to install hardware. A metal lining plate must be installed inside. The thickness of the lining plate should be at least twice the pitch of the fastener. It must not be fastened to plastic profiles, and non-metallic linings must not be used.

　　5. The hardware fittings should be installed last, and the door and window locks and handles should be assembled after the window and door leaves are put into the frame to ensure accurate position and flexible switching.

　　 6. After installing the metal stamping parts, pay attention to maintenance to prevent rust and corrosion. In daily use, lightly close and open lightly to prevent hard closing and hard opening, which may cause damage. Without noise, there are now nylon wheels. Not only does it push and pull without noise, but it is also smoother, lighter, and has a service life that is not shorter than the above various pulleys. Make (doors) and windows normal. For smooth operation, it is necessary to choose a high-quality pulley for (doors) and windows. On the surface, inferior pulleys have rough workmanship. Not smooth. It is not flexible to slide, small and light.