How to maintain the door and window hardware correctly for a
What are the performance requirements of high quality sliding braces?
1. Window opening and closing force: the ratio of sliding brace for inside and outside casement windows shall not be greater than 40n, and the opening and closing force of sliding brace for outside casement windows shall not exceed 40n within the opening range of 0-300mm.
2. Repeated opening and closing: the repeated opening and closing of the window sash 25000 times is an experiment that the doors and windows must go through. Only after 25000 times of repeated opening and closing, the opening and closing force of the doors and windows should not be greater than 80N.
3. Strength of sliding brace (hanging weight of window sash): after the window sash is opened (or opened to the maximum position), the sliding brace is used to bear the pressure of 1000N (equivalent to the gravity of 102kg) for five minutes. If all parts of the sliding brace are intact, the sliding brace of doors and windows is qualified.
How to maintain the door and window hardware correctly for a longer service life?
1. Stainless steel handle and other stainless steel "hardware" can be scrubbed with brightener to increase brightness.
2. Hinge, hanging wheel, pulley and other moving parts may reduce their function due to dust adhesion during long-term movement. One or two drops of lubricating oil should be dropped every six months to keep smooth.
3. Pay attention to the direction of the handle rotation and stretching, avoid using dead force. In particular, children should be taught not to swing on the door handle, which is not only dangerous, but also may cause damage to the inner door.
4. When the rotation of the lock cylinder is not sensitive enough, a small amount of black powder can be scraped from the pencil lead and gently blown into the lock hole; use less lubricating oil as far as possible, so as to easily adhere to dust.
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