What is the difference in quality between southern glass-lined equipment and northern glass-lined equipment
Source: Our Website | Date of issue:
2020-11-05 02:05:06
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Abstract: 1. At present, the enamel spray powder in my countrys glass-lined equipment industry is mainly divided into two categories: cold spray (powder) and thermal spray (powder). Most enamel equipment manufacturers in the north generally use cold spray techn…
1. At present, the enamel spray powder in my country's glass-lined equipment industry is mainly divided into two categories: cold spray (powder) and thermal spray (powder). Most enamel equipment manufacturers in the north generally use cold spray technology, while most glass enamel equipment manufacturers in the south use thermal spray technology. Let's talk about the difference and advantages and disadvantages of hot and cold powder spraying.
2. The biggest advantage of the southern thermal spray technology is its low cost, and the enamel process can often be produced after two to three times. But the disadvantage is that the quality is unstable, and the product is prone to problems in a disadvantaged environment, causing more losses to users.
3. The biggest advantage of the northern cold spray technology is the stable product quality, but the equipment enamel process must be about six to seven times, so the cost is too high. You know, every time enamel is added, it must be fired at a high temperature of thousands of degrees, which shows that the cost gap is huge.
The quality of the enamel equipment is not only related to the quality of the enamel, but also has an important relationship with the spraying technology selected for the enamel equipment. To put it simply, cold spraying is a powder spraying operation for the enamel equipment blanks under cooling and normal temperature, and thermal spraying is a powder spraying operation for the enamel equipment blanks to reach a working state without being completely cooled. Cold spraying is convenient for workers to re-grind and refine the steel billet and porcelain powder again and again, and the water in the porcelain powder is naturally dried. The ceramic layer under this technical operation is thin (large effective thickness), and the number of firing cycles is large, and the cost High; thermal spraying is performed when the enamel equipment is not completely cooled. The water in the enamel powder is forced to dry through the uncooled steel plate, so the periodicity is fast, the equipment output is large, and because of the temperature problem, the thermal spraying can only Covering each production defect cannot be finely ground, so the enamel equipment has a thicker porcelain layer and relatively low cost.
4. It can be seen that although the thermal spray technology produces fast and the porcelain layer is thick (the thicker the porcelain layer is not the better for enamel equipment), it is easy to produce dark bubbles due to high temperature operation, the porcelain is thick and uneven, and the porcelain surface is easy to fall off. . Although the cost of cold spray is high, the production volume cannot be expanded, but from the user's point of view, the production equipment is guaranteed and the ceramic layer is uniform (in line with international standards).
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