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The company has established the enterprise goal of "survival by quality, reputation by quality, and development by quality. Strengthen the training of technical personnel, and constantly enrich the first-line technical force to ensure the normal operation of the quality assurance system.
Summary of the reasons for the breakage of stainless steel reaction kettle
Release time:
2020-03-02
Stainless steel reactor is a widely used in chemical products production of chemical machinery products, because of its contact with a wide range of chemical substances, and there are a lot of corrosive substances on the magnetic reactor damage. We want to know more clearly the cause of the damage of the magnetic reaction kettle to better produce it. The reasons for the damage of the magnetic reaction kettle are the following.
1. Physical damage of stainless steel reaction kettle
Enamel impact resistance is very poor, any metal, hard objects to its impact will lead to enamel damage. Therefore, during the use of the magnetic reaction kettle, any metal or hard object shall be strictly prevented from falling into the kettle. In case of material blockage, plastic rods must be used to dredge the kettle. During maintenance, the lid shall be covered to prevent small pits or porcelain explosions from appearing on the porcelain surface melted by welding slag.
2. Thermal stress damage of stainless steel reaction kettle
Stainless steel reaction kettle by 900 ℃ high temperature roasting, after cooling enamel and steel plate bonded together. Since the linear expansion coefficient and elongation of the enamel are less than that of the steel plate, the deformation of the glass lining after cooling is less than that of the steel plate, and the enamel is constrained by the steel plate to generate compressive stress. After the enamel kettle is made, the glass lining is pre-compressive stress, and the steel plate is pre-tensile stress. Because the prestress is related to the linear expansion coefficient and elongation, and the linear expansion coefficient and elongation are closely related to the temperature, the working temperature of the enamel kettle has a great influence on the use of the enamel kettle. If the stress generated by the enamel exceeds its use stress due to large temperature changes, the enamel will be destroyed. Therefore, the enamel layer of the enamel kettle is extremely explosive when it is cold and hot. Therefore, the reaction kettle has a temperature limit: temperature 200 ℃, temperature resistance: cold shock <1IO ~ C, thermal shock <120 ℃. When feeding, the temperature difference between the material temperature and the kettle body is too large, and when heating up, the steam is too strong and the temperature is too fast, which can also lead to porcelain explosion. Therefore, the enamel kettle in use, cooling to slow, uniform, graded cooling.
3. Stainless steel reactor processing stress damage
In the reaction kettle processing process, due to the drum, stamping, welding to produce a large number of internal stress, these stresses should be removed before the enamel, such as the elimination of incomplete will lead to enamel explosion. This damage tends to occur in the first three months of service. Therefore, heat treatment or aging treatment of the embryo body can prevent porcelain explosion.
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