At present, the enamel glaze dusting in the enamel reactor industry is mainly divided into two categories: cold dusting (powder) and hot dusting (powder) . Most of the enamel reactor manufacturers in the north generally use cold spray technology, while the enamel reactor manufacturers in the south are mostly using hot spray technology. Here is a brief talk about the difference between hot and cold dusting and advantages and disadvantages:
The quality of enamel reactor is not only related to the quality of enamel glaze, but also related to the spraying technology chosen by enamel reactor. In short, cold spray is the enamel reactor blanks in the state of cooling at room temperature dusting, hot spray is the enamel reactor blanks in the state of incomplete cooling is to be able to work dusting. Cold spraying is convenient for grinding and refining the steel billet and porcelain powder, and the water in the porcelain powder is naturally dry. The ceramic layer under this technology is thin (the effective thickness is big) , the firing times are many, and the cost is high Thermal spraying is carried out when the enamel reactor is not completely cooled. The moisture in the enamel powder is forced to dry through the uncooled steel plate, so the periodicity is fast and the output of the equipment is large, also because of the problem of temperature, thermal dusting can only cover each production defect, can not be fine grinding, so its enamel reactor ceramic layer is thicker, relatively low cost.
Thus, although the production of hot spray technology is fast, ceramic layer thickness (enamel reactor is not the thicker the better) , but because of high-temperature work easy to produce dark bubbles, ceramic thickness and uneven, easy to fall off the whole porcelain surface. And although the cost of cold spray is high, production can not be expanded, but from the user's point of view, the production equipment is guaranteed, the ceramic layer is uniform (in line with international standards) , and every time the construction is a new test, to ensure the quality of products.