In the manufacture of air duct heater system, welding is a very important step. Most of the system is transported by piping, so the connection between piping and piping, and between piping and other components, except for bolt connections, is welded. Weld the flange to the pipe and connect the two pipes with bolts. The pipeline is filled with hot oil, the temperature and pressure are high, and the quality of welding directly affects the quality of the entire system. It can be seen that the welding process is an essential step in the design of the heat transfer oil system.
Welding is a process of local rapid heating and cooling of the air duct type electric heater. The welding area that cannot expand and contract freely is restricted by the body around the workpiece. After the workpiece is cooled, the welding stress is deformed.
The air duct type electric heater is composed of the main body and the control system. The heating parts are made of stainless steel tubes, protective sleeves, high-temperature resistance alloy wires, crystalline magnesium oxide powder, and compression technology molding. The control part is composed of advanced digital circuits, integrated circuit triggers, high back pressure control silicon, etc. to form an adjustable temperature and constant temperature system to ensure the normal operation of the electric heater.
The main purpose of the air duct heater is to heat the air, to heat the air to the required temperature, for direct use or subsequent use. Its application range is still very wide. Electric air heaters can be used for air heating operations. On the heating temperature, the upper limit can reach 850°C. It can not only heat the air, but also other gases. The heater has the advantages of non-conductivity, non-combustion, non-chemical corrosion, etc., and is safe and reliable to use. The control part of the air heater should be handled with care during transportation, and not subject to shocks and shocks. Hoisting operations should be standardized, and appropriate tools should be used to avoid damage to internal components. When storing, please keep it indoors and avoid rain or moisture.
