Edit thermal process heat treatment process heat treatment process generally includes heating, insulation, cooling three processes, sometimes only two process heating and cooling. These processes interface between heat-resistant steel prices, can not be interrupted. Heating is an important step of heat treating. Metal heat treatment method of heating a lot, the first is the use of charcoal and coal as a heat source near and application of liquid and gaseous fuels. Application of electric heating is easy to control, and no environmental pollution. With these heat sources can be directly heated, it can also be a salt or molten metal, as well as indirect heating floating particles. When the metal is heated, the workpiece is exposed to the air, often oxidized, decarbonization (ie, reduce the carbon content of steel parts surface), which after heat treatment the surface properties of the parts have a very negative impact. Thus the metal is usually done in a controlled atmosphere or protective atmosphere, molten salt and vacuum heating, paint or packaging methods can also be used to protect heating. The heating temperature is one of the important parameters of the heat treatment process, selection and control of the heating temperature resistant steel, heat treatment is to ensure the quality of the main issues. With the purpose of heating temperature was treated metal material and heat treatment vary, but are generally heated to a temperature above the phase transition, in order to obtain tissue temperature. Further change will take some time, so when the metal surface to achieve the required heating temperature, must at this temperature for a certain time, Shandong heat-resistant steel, inside and outside temperature is the same, so the microstructure of the transition is completed, this time called the incubation time. When using high-energy density and surface heat treatment heating, heating fast heat-resistant steel castings, generally there is no holding time, and holding time of chemical treatment is often longer. The cooling step is missing is not available during the heat treatment process, cooling method by processes differ mainly controlling the cooling rate. General annealing cooling slowest cooling faster normalizing, quenching cooling faster. But also because of different grades have different requirements, such as empty hard steel can be used as cooling rate normalizing hardened. EPC process - coating layer during the drying process of wet off how to do? After a dry coating thickness, dip again when the pattern do not soak too long in the slurry pond, to avoid drying of the first layer has also infiltrated into a "paste." The first layer is sufficiently infiltrated, full of friction, long-dip better than fast ferry, and the second three are not, the slurry can be uniformly hung Tianjin slurry tank shall be made as soon as possible. Just after 2 second three-dipping should not drip as soon as possible into the drying room drying, long home without drying the outer like the inner infiltration of water quickly, weaken the adhesion of the inner layer and white film. 3 appearance after dipping thick layer side overturned not invariably, placed on one side towards the ground, the site is easy to infiltrate shedding as much as possible toward the ground, diagonal, vertical housing or anti-gravity discharge can avoid falling. 4 process allows an appropriate increase in the drying temperature range, reducing drying room humidity, increase room heat flow to accelerate the drying speed. 5 to increase the amount of adhesive is used to improve the coating adhesion. 6 do not try to use less water volume, density or too coarse aggregate. Heat-resistant steel prices, all Li Xin Machinery Company (certified), heat-resistant steel from the Linyi Public Li Xin Machinery Limited. Linyi Public Li Xin Machinery Co., Ltd. (www.lyzlx.com) Shandong Linyi, casting leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Li Xin machinery company in the public leadership with the staff warmly welcome all inquiries negotiations to create the Public Li Xin machinery company a better future.