The service life of hardware mold is related to many factors, such as mold structure design, mold steel selection, heat treatment, surface treatment, machining grinding, wire cutting process, stamping equipment, stamping materials and processes, mold lubrication, poor maintenance, and repair level, etc.

Among the various factors that cause mold failure, about 25% are unreasonable mold structure and improper material selection, about 45% are improper heat treatment, and about 10% are process problems; Equipment problems, lubrication problems, and other factors account for about 20%. Pay attention to the maintenance of gold stamping parts after installation to prevent rust erosion. In daily use, it is necessary to close and open gently to prevent damage caused by hard closing and hard opening.

The following are the measures to prevent the damage to hardware stamping parts:

1. The model, specification, and function of hardware fittings shall comply with the current national standards and relevant regulations, and shall match the selection of plastic steel doors and windows.

1. For sliding windows with a width of more than 1 meter, or doors and windows with double glazing, double pulleys should be set, or movable pulleys should be selected.

1. The sliding support hinge shall not be made of aluminum alloy but stainless steel.

1. When installing hardware with fastening screws, a metal lining plate must be set inside, and the thickness of the lining plate should be at least twice the tooth pitch of the fastener. It shall not be fastened on plastic profiles, nor shall non-metallic linings be used.

1. The hardware fittings should be installed finally, and the door and window locks, handles, etc. should be assembled after the window leaves are put into the frame, to ensure accurate position and flexible switch.

1. Pay attention to the maintenance of metal stamping parts after installation to prevent rust erosion. In daily use, it is necessary to close and open gently to prevent damage caused by hard closing and hard opening. There is no noise, there is the current nylon wheel. It not only pushes and pulls without noise, but also is smoother and lighter, and its service life is not shorter than that of the above pulleys. To make the (door) window run normally and smoothly, it is necessary to choose a high-quality pulley for the (door) window. On the surface, the poor pulley is rough and unsmooth, and it slides inflexibly. It is small and light.

The design principles of metal stamping mainly include the following points:

1. The designed stamping parts must meet the product use and technical performance, and be easy to assemble and repair.

1. The designed stamping parts must be conducive to improving the utilization rate of metal materials, reducing the variety and specification of materials, and reducing the consumption of materials as much as possible. If allowed, low-cost materials shall be used to make the parts blank without waste and waste as far as possible.

1. The designed stamping parts must be simple in shape and reasonable in structure, which is conducive to simplifying the mold structure and simplifying the number of processes, that is, using a simple stamping process to complete the processing of the whole part, reducing the use of other methods of processing, and conducive to stamping operations, to facilitate the organization and Realization of mechanized and automated production, to improve labor productivity.

1. When the designed stamping parts can be used normally, the requirements for dimensional accuracy grade and surface roughness grade should be as low as possible, which is conducive to the exchange of products, reduce waste products and ensure stability of product quality.

1. The designed stamping parts should be conducive to using the existing equipment, process equipment, and process flow to process them as much as possible, and to prolong the service life of the stamping die.

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