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The core component of bright annealing line for stainless steel strip --Composite corrugated muffle

2020-12-08

Professional casting quality, integrity leading the future, strong product R & D ability and excellent quality assurance, composite corrugated muffle quickly won the national recognition, issued the national patent certificate, in addition, rich experience and considerate service has also won the unanimous praise of many customers, in order to better tomorrow, we will be more energetic and strive for the upper reaches.

"Technical guidelines for clean treatment of steel calendering industry in Guangdong Province" meeting was held in the Guanglong base of STRONG TECHNOLOGY

2020-12-05

On the morning of July 29th, the Guanglong R & D and manufacturing base of STRONG TECHNOLOGY held a working meeting on the preparation of "Technical guidelines for clean treatment of steel calendering industry in Guangdong Province". Lin Zeyu, executive chairman and Party branch secretary of Guangdong stainless steel materials and Products Association; Huang gengyan, executive secretary general; Wang guimao, deputy general manager of STRONG technology; Dai Lei, chief engineer of Foshan Chengde new materials; Yin Chenxing, director of Zhaoqing Hongwang environmental protection department; Yang Wei, director of Guangdong Yongjin technology and quality department; Feng Li, engineer of rolling material Department of Guangdong Shaogang group; Chang Yumin, senior engineer of STRONG TECHNOLOGY, Liang Xianxi, deputy general manager of the Guanglong base of STRONG TECHNOLOGY, attended the meeting.

Temperature and fancy movement of mould materials

2020-11-30

The process of heat treatment is realized by heating and cooling. The size and shape of the workpiece are different, and will affect the condition of heating and cooling. The process of die casting production is also the process of heating and cooling the material repeatedly.If the temperature difference between heating and cooling is larger, the earlier the stress concentration will appear the crack and fatigue fracture.

If you want to improve the service life of the mould, you must understand this knowledge!

2020-11-27

Heating of mould At present, there are three main methods of mould preheating. Filling heating, gas heating, oil temperature heating. Although the three kinds of methods can achieve the purpose of temperature rise, the effects on the materials are very different. Filling heating is through slow and low pressure filling, the heat of material liquid is directly transferred to the mould surface. The temperature of die casting aluminum alloy liquid is 630 ℃ - 650 ℃. When the mould surface receives the heat from room temperature, it will lead to large stress caused by surface thermal expansion and internal temperature difference. Gas heating is by burning gas. Although the heat is also transferred from outside to inside, there is a gradual heating process, and the stress generated will not be so large. Oil temperature heating is through the high temperature oil into the heating. It takes a long time for heat to pass from the inside to the outside, so the stress generated will be very small. Cooling of mould The cooling water or oil path takes away the heat through the water or oil running inside the mould, so that the surface cooling is gradually completed. As long as the cooling channel is not too close to the sharp, corner or shape position, there will be no big problem. The main function of coating cooling is to make the mould surface have a layer of protective film to prevent mucous membrane. A lot of spraying immediately after filling is a big mistake, because that is to quench the material. Some of them are specially used to spray a few more times on the splitter cone and flow channel. Because they think the temperature here is the highest, they have to spray more to make sure the temperature can drop down. In fact, as the splitter cone and flow channel are located at the bottom of the mould, the coating liquid on the top must flow through the bottom. Therefore, such "key care" may be lower than your expected value. To improve the design of the structure and gating system and adopt the most favorable heating or cooling method is to prevent the premature failure of the mould. Otherwise, even the best quality steel will seriously shorten the life of the mould because it exceeds the limit of its toughness and strength.

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