Three precautions to prevent damage to hardware precision stamping parts

The three precautions to prevent damage to the hardware precision stamping parts are as follows: 　　 1. In daily use, lightly close and lightly open to prevent hard closing and hard opening, which may cause damage. Without noise, there is the current nylon wheel. Not only does it push and pull without noise, it is smoother, lighter, and has a service life that is not shorter than the above various pulleys. To make (doors) and windows normal. Smooth operation, you must give (doors) ) Choose a high-quality pulley for the window. On the surface, the inferior metal stamping pulley has rough workmanship, no smoothness, inflexible sliding, small and light.　　2. The models, specifications and functions of the selected hardware accessories should comply with the current national standards and relevant regulations, and match the selection of plastic steel doors and windows. To install hardware with fastening screws, a metal lining plate must be installed inside, and the thickness of the lining plate should be at least twice the pitch of the fasteners. It must not be fastened to plastic profiles, and non-metallic linings must not be used.　　 3. Pay attention to maintenance after installation of metal stamping parts to prevent rust and corrosion. Hardware fittings should be installed last, and door and window locks, handles, etc. should be assembled after the window and door leaves are in the frame to ensure accurate position and flexible opening and closing. For sliding windows with a width of more than 1 meter, or double-glazed doors and windows, double pulleys should be installed, or movable elastic pulleys should be used. The sliding hinge shall not be made of aluminum alloy, but shall be made of stainless steel.