In order to prevent silica gel from flowing around, the molds are fixed in a regular range with wood or wooden boards, and the first part of the mold is separated by wood and sludge when opening the die. There is no gap between the sludge and the mold, and the surface of the sludge is smooth and flat. After the above work is prepared, then apply petroleum jelly or spray release agent on the plaster mold or the mold. For smooth products, use a clean cotton cloth dipped in petroleum jelly and apply it evenly on the mold. Keep it for 30 minutes to make the mold. The product fully absorbs the petroleum jelly, and then wipes the surface of the mold with a clean cotton cloth, and the surface is required to be bright; and the textured product only needs to be evenly coated with the petroleum jelly to adjust the silica gel according to the formula. When mixing the silica gel, stir in irregular directions to make the curing agent and silica gel fully mix to minimize air mixing into the rubber. For smooth products, it is best to vacuum once when the first layer of rubber is applied, and keep the vacuum at -0.1Mpa. 7-8 seconds.

Mold manufacturing refers to the manufacturing of molds for metal casting, molds for mineral materials, molds for rubber or plastics, and molds for other purposes. The mold industry is commonly known as the "mother of industry". From focusing on single workshop production to nowadays with many brands, the quality and quantity of molds in my country have made a very big leap. In recent years, with the rapid development of my country’s national economy and the increase in people’s income, the consumer market’s demand for consumer goods such as automobiles, communications, electronics, and home appliances has increased rapidly, making these industries enter a stage of rapid development, which has also become the rapid development of my country’s mold industry. An important driving force for development. According to statistics, the total output value of my country's mold industry from 2010 to 2019 is on the rise. In 2019, the total output value of my country's mold industry is about 290 billion yuan, an increase of 4.92% year-on-year. It is expected that by 2020, the total output value of my country's mold industry can reach 3043 100 million yuan.

Technology Highlights (1) The hardness of the laser hardened layer reaches HV800～1100, and it has excellent wear resistance and tensile resistance. The service life after one-time mold repair is 5-50 times longer than that of flame quenching. (2) The laser quenching layer has uniform hardness and layer depth, and has a strong bonding force with the substrate. (3) The amount of deformation after laser quenching is extremely small, and there is no need for any correction and processing. (4) Laser fusion welding technology can repair damaged parts such as local strain on the surface of the mold, and the repair effect is significantly better than other welding methods. (5) It has a high processing speed, usually up to 0.5m2/h. (6) It is only necessary to carry out targeted treatment on the worn parts of the mold, and it is not necessary to treat all the surface of the mold. (7) Significantly improve the surface quality of the drawn parts.