Since entering the “Eleventh Five-Year Plan”, my country’s automobile industry has been developing by leaps and bounds, with an annual increase of one million vehicles. Especially with the development of the national economy and the improvement of people’s living standards, the development of cars and trucks has become more rapid. According to information, the FAW Group sold 1.2 million vehicles in 2007, and is expected to sell 1.35 million vehicles this year. The total social demand is nearly 8 million.
Heat treatment is an important process in the automobile manufacturing process. Important parts such as engines, gearboxes, and rear axles need to undergo heat treatment to ensure the safety, reliability and service life of the entire vehicle. With the rapid development of the automobile industry, domestic auto parts heat treatment equipment has been rapidly improved, and advanced heat treatment equipment has been widely promoted and applied in the automobile industry. However, as a manufacturer of heat treatment equipment in the production process of auto parts, we also deeply understand that many aspects of domestic heat treatment equipment still need to be improved and improved.
1. The standard of heat treatment equipment is in urgent need
With the rapid development of the automobile industry, in order to meet the mass production of auto parts, since the late 20th century, domestic heat treatment equipment manufacturers have successively developed many equipment with high degree of automation, reliable operation and good process repeatability, such as push rod carburizing production lines , Sealed box furnace production line, mesh belt production line and isothermal normalizing production line, etc. Since each equipment manufacturer adopts its own set of equipment manufacturing standards in the development process based on its own technical conditions and production levels, and the industry and the country do not have a complete set of standards for the acceptance of heat treatment equipment, so when users purchase equipment All feel unruly, always in a passive role. Therefore, we suggest that the standards management department must organize experts to formulate a complete set of acceptance standards for heat treatment equipment as soon as possible, which is conducive to the development of heat treatment equipment manufacturers and heat treatment parts manufacturers along a healthy track.
2. Independent brands need to be improved
Through many years of using heat treatment equipment, and after self-made, maintenance and technical transformation, we have a certain understanding of heat treatment equipment, and also deeply realize that domestic self-owned brand heat treatment equipment needs further improvement and improvement in many aspects.
(1) The choice of furnace type should be based on energy conservation and environmental protection. Cylindrical furnaces are more energy-efficient than box furnaces. As the surface area is reduced by nearly 14%, the heat dissipation of the furnace wall is reduced by nearly 20%, and the surface temperature of the furnace skin is reduced by nearly 10°C.
(2) The lining material is on the top of the heat treatment furnace