Quenching is the purpose of the supercooled austenite to martensite and bainite transformationSUS309S, get martensite and bainite, and cooperate with different temperature tempering, to significantly improve SUS309S rigidity, hardness, wear resistance, fatigue strength and toughness, etc., to meet different application requirements of various kinds of machinery parts and tools.
Also can satisfy some special steel by quenching of ferromagnetism, corrosion resistance and other special physical and chemical properties.
Quenching is SUS309S heated to a proper temperature and maintain for a period of time, then immersion quenching cooling medium fast cooling SUS309S metal heat treatment process. Quenching can improve the hardness and wear resistance of the workpiece, and therefore is widely used in various engineering, mold, measuring tool and surface abrasion resistant parts demand.
Combined with different temperature by quenching tempering can significantly improve SUS309S decreasing strength, toughness and fatigue strength, and these properties can be obtained between cooperate (comprehensive mechanical properties) to meet different application requirements.
The quenching process is mainly used in steel. Commonly used when heated to above the critical temperature of steel, original all or most organizations will be at room temperature to austenite. Then rapid cooling in the steel immersed in water or oil, austenite into martensite. Compared with other organizations in steel, martensite hardness is the highest. Fast cooling of quenching workpiece internal causes stress, when its big enough artifacts go awry deformation and cracking. Therefore must choose appropriate cooling methods.
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