Quality identification method for vacuum drying oven

First of all, from the structural analysis, the general dry box casing is made of cold-rolled steel, but the thickness will vary greatly. Due to the vacuum environment inside the vacuum drying box, in order to prevent the atmospheric pressure from crushing the box, the thickness of the outer casing is slightly larger than that of the blast drying box. Generally, the thicker the steel plate, the better the quality and the longer the service life. For the convenience of observation, the door of the drying box is provided with glass windows, generally with tempered glass and ordinary glass on the inlaid door.

Secondly, when talking about temperature, I have to talk about insulation and sealing. At present, the insulation material of domestic dry box is mainly made of fiber cotton, and a few use polyurethane. Let's talk about the different characteristics of the two materials. In terms of thermal insulation effect, the temperature resistance and thermal insulation effect of polyurethane are better than that of fiber cotton. Generally, polyurethane can keep the high temperature inside the box stable for several hours. It is worth mentioning that the efficient heat insulation performance of polyurethane can effectively Prevent the operator from overheating the outside of the box. When the fiber-reinforced cotton drying box is at high temperature, it can only be controlled and adjusted by the temperature controller to keep the temperature inside the box stable, which greatly increases the working strength of the fan and the controller, thereby reducing the service life of the drying box. . From the perspective of post-maintenance, since the polyurethane is completely injected into the box body, it is particularly cumbersome to repair in the later stage. Before the maintenance, all the polyurethanes need to be pulled out, and then repaired and then molded. Fiber cotton is not so troublesome and easy to operate. Then from the market, the price of fiber cotton is very cheap, and can meet most of the insulation requirements, widely used, the finer the fiber cotton, the greater the thickness, the higher the insulation quality. The sealing of the drying box is generally made of anti-aging silicone rubber, and the sealing effect is very good.

In the cycle heating performance, the choice of fans is crucial, mainly domestic and imported two types of fans.

Selection of accessories: If the general drying box is not required by the customer, there will be no time controller. That is to say, the drying time can only be controlled manually. If you need to add, you can select the time controller and add about one hundred yuan. about.