Keywords: heat treatment, electric furnace, energy-saving, furnace, cleaning, environmental, waste salt, waste gas,

Energy-saving electric furnace for heat treatment equipment

In recent years, China is energy-saving electric furnace industry has carried out many discussions on the technological transformation of enterprises, and has achieved consensus on the development direction of energy-saving electric furnace production technology, which can be simply summarized as four aspects: cleaning, precision, energy saving and quality control. The trend of heat treatment equipment in addition to better meet the basic conditions listed above, in the technical development prospects should also be summarized into these four directions.

The environmental pollution of industrial production teams has reached a very serious level, which has posed a serious threat to the survival of human beings and organisms. International environmental protection organizations have repeatedly strongly appealed to developed and developing countries to put environmental problems on the important agenda and take effective measures to avoid the further deterioration of emptying. my country is a party to international environmental protection treaties. The National People is Congress and the State Council attach great importance to this. The Environmental Protection Law, which has been approved and promulgated, has proposed the impact of production, life, commerce, transportation, and cultural and recreational activities in all walks of life on the environment. Very strict regulations.

The waste gas, waste water, waste salt, highly toxic substances, dust, noise and electromagnetic waves formed by heat treatment will pollute the environment. Heat treatment production equipment and auxiliary equipment must first ensure that the process of producing these substances is not used; secondly, when the process of producing pollutants is not adopted, strict harmless treatment must be implemented afterwards to meet the prescribed emission standards before discharge.

Energy-saving electric furnace equipment belonging to the category of clean heat treatment includes vacuum furnace, controlled atmosphere furnace and heating devices such as induction, laser, electron beam, plasma and ion beam. In heating furnaces, in general, energy-saving electric furnaces are cleaner than combustion furnaces. When natural gas is used as fuel, the SOX and NOX in the combustion products will be below the specified value by using pre-sulfur removal gas and a reasonably constructed burner. The well-type furnace and sealed box furnace, which perform gas carbon-nitrogen co-penetration and nitrogen carbon co-penetration, can completely decompose the HCN formed in the process after igniting the exhaust gas, without causing harm. Liquid carburizing, carbonitriding and nitrocarburizing using cyanide salts, and salt bath furnaces that produce large amounts of CN by reaction should be prohibited in principle (whether urban or township).

belong to the category of clean cooling equipment, there are water tanks, salt water tanks, oil tanks with circulating cooling, PVA, PAG, ACR, PVP, PEO and other polymer aqueous solution tanks, spray cooling facilities, air slow cooling pits, air circulation cooling devices, fluidized cooling tanks, nitrate salt bath furnaces, etc. The oil temperature of isothermal and graded quenching oil tank must be at least 50 ℃ lower than the flash point of the oil, and the oil fume formed by quenching shall be concentrated before discharge.

Cleaning is a non-negligible intermediate auxiliary process in the production process of energy-saving electric furnaces. After machining, the surface of the workpiece sent to the heat treatment workshop is often filled with cutting oil, emulsion, polishing agent, wire drawing pigment and lubricant, grinding grease, and magnetic powder oil for flaw detection. If the workpiece is not cleaned and heated directly, it will inevitably cause smoke in the production site, which will 1 affect the health of workers and pollute the environment. There are many ways to clean the oil on the surface of the workpiece. On the one hand, the cleaning method and equipment can be selected according to the type of oil and the required cleaning method. On the other hand, the consideration is to avoid the secondary pollution of the environment. Combustion degreasing of automobile gear parts before carburizing is the 1 surface degreasing method to be advocated. The workpiece is heated to 500~550 ℃ in the combustion furnace, and the surface grease completely evaporates and participates in the combustion, so there is little fuel for the furnace. The micro-oxidation of the surface of the workpiece is conducive to the uniformity of the seepage layer and the reduction of internal oxidation, and the workpiece is preheated during the degreasing process, which can save energy. The waste heat of the combustion products of the degreasing furnace can also be used for tempering or heating of the intermediate cleaning bath liquid to make full use of the heat energy. The more valuable combustion degreasing is a clean auxiliary equipment.

The above is about the introduction of energy-saving electric furnace equipment. If you have any questions about related products, please consult a specialized manufacturer, and I believe you will get a satisfactory answer.

More Energy-saving electric furnace for heat treatment equipment: www.quenchtank.com/view-89.html