The stainless steel shell dewaxing machine is a device used in precision casting and other industries to dewax wax coated shells. Its shell is made of stainless steel material and has the advantages of strong corrosion resistance and high temperature resistance. Here is a detailed introduction about it:
1、 Structural characteristics
Shell material: Made of stainless steel, it has good corrosion resistance and high temperature resistance, and can maintain stable performance in high temperature environments during the dewaxing process. It is not easy to rust and deform, and is also easy to clean and maintain.
Heating system: Common heating methods include thermal oil heating and electric heating. Some dewaxing machines use heating tubes to heat the heat transfer oil filled in the cavity between the outer and inner shells. After the heat transfer oil heats up, the temperature inside the inner shell rapidly increases, causing the wax on the surface of the object to melt.
Inner shell and placement device: The inner shell is generally made of materials with good thermal conductivity, such as copper, to accelerate heat transfer. There is a placement plate inside the inner shell for placing the objects to be dewaxed. The placement plate is usually a hollow mesh plate, so that the wax can flow smoothly after melting.
Wax collection system: There is usually a collection box below the dewaxing machine for collecting the extracted wax. Some collection boxes also have floating blocks inside. When the wax in the collection box continues to increase, the floating blocks can move upwards to increase the depth of the collection box and prevent wax from overflowing.
Control system: Some dewaxing machines are equipped with advanced control systems, such as PLC visual LCD display operation panel, which can achieve one click start, automatic intake and exhaust, automatic wax discharge and other functions. At the same time, it can also monitor and adjust temperature, pressure and other parameters in real time to ensure precise control and efficient operation of the dewaxing process.
2、 Working principle
The working principle of the stainless steel shell dewaxing machine is to melt or vaporize the wax mold by heating, thereby removing the wax from the shell. Taking the dewaxing machine heated by thermal oil as an example, place the object to be dewaxed on a placement plate, close the feeding door, and start the heating tube. The heating tube heats the thermal oil between the outer shell and the inner shell. The thermal oil is heated to about 200 degrees Celsius. Due to the fast thermal conductivity of the inner shell, the temperature inside the inner shell can quickly rise, and the wax on the surface of the object will quickly melt into a liquid or gas state. The liquid wax will flow into the cooling box from the liquid tube, while the gas wax will be introduced into the cooling box through the steam tube, thus completing the dewaxing process.
3、 Advantages
Strong corrosion resistance: The stainless steel material enables it to resist the corrosion of chemical substances that may come into contact during the dewaxing process, extending the service life of the equipment.
Cleaning and hygiene: The stainless steel surface is smooth and not easily adhered to wax and other impurities, making it easy to clean and beneficial for maintaining the efficiency and dewaxing quality of the equipment.
Beautiful appearance: The stainless steel shell gives the equipment a good appearance texture, while also enhancing the level and image of the equipment.
High safety: Some stainless steel shell dewaxing machines are equipped with safety devices such as safety valves and pressure temperature dual protection controls, which can effectively prevent safety accidents during equipment operation.