The purpose of quenching for the gear surface of large gear ring
The large gear ring is the main part of rotary kiln equipment, which mainly drives the whole cylinder to run for a long time.In the process of machining large gear ring, quenching of gear surface can ensure to prolong the service life of the gear. In the process of machining gear, there are two quenching methods, namely flame surface quenching, and high-frequency surface quenching.
The purpose of quenching for the gear surface of large gear ring
The purpose of quenching is to make the supercooled austenite undergo martensite or bainite transformation to obtain martensite or bainite structure, and then with tempering at different temperatures, to greatly improve the rigidity, hardness, wear resistance, fatigue strength and toughness of steel, so as to meet the different use requirements of various mechanical parts and tools.It can also satisfy the special physical and chemical properties such as ferromagnetism and corrosion resistance of some special steels through quenching.
The difference between the two quenching methods
1, flame surface quenching
The principle is the surface heat treatment method that the flame generated during the combustion of gaseous fuel heats the surface of the workpiece to the quenching temperature and then cools it quickly.The surface layer of the hardened gear is martensite, and the heart is still the original structure. Therefore, the surface layer after quenching and the heart are of different properties.Flame quenching can obtain high surface hardness and favorable internal stress distribution, improve the wear resistance and fatigue strength of the workpiece.
2. High-frequency surface quenching
The surface hardness of gear is higher than that of flame quenching, which can effectively improve the anti-fatigue performance of gear.
It can be seen that the effect of the two quenching methods is still relatively large, such as some high hardness, high wear resistance gear or recommended to choose the high-frequency surface quenching.In order to better cooperate with the rotary kiln, the special heat treatment technology is adopted in the casting of the gear ring, which optimizes the structure of the gear ring and improves its hardness, thus greatly enhancing the wear resistance and impact resistance of the product.
Luoyang Yujie Industry &Trade Co.Ltdlocated in Luoyang City, one of the main heavy industrial bases in China. We specialize in the production of bearings, nonstandard machinery parts, machine tools. For the bearings, we can offer cross roller bearing, slewing bearing, YRT bearing, thin section bearing, ball screw bearing, deep groove ball bearing, etc. For the nonstandard machine parts, we can produce gears, shafts, sprockets, molds, rollers, pulley, mining machine parts, etc as per customer drawing and requirements. For the machine tools, we offer CNC vertical machine center, CNC horizontal lathe, CNC gantry boring and milling machine, CNC floor type boring, and milling machine.
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