SKK-9 is Hitachi's high-performance high-speed steel with good wear resistance and toughness. It is a high-speed tool steel of the W-MO series (6-5-2 type). SKH9 (SKH51) is used in the world in many quantities, instead of the W-type high-speed tool steel SKH2. Then how to use SKH9 high-speed steel is fully utilized.
How to use SKH-9 high speed steel
Source: Shenzhen Henglongsheng Special Steel Technology Department ()
SKK-9 is Hitachi's high-performance high-speed steel with good wear resistance and toughness. It is a high-speed tool steel of the W-MO series (6-5-2 type). SKH9 (SKH51) is used in the world in many quantities, instead of the W-type high-speed tool steel SKH2. Then how to use SKH9 high-speed steel is fully utilized.
1. SKH9 high-speed steel charcoal structure is fine, tidy and well distributed. And the organization is even. Therefore, the wear resistance and leather are relatively balanced. Suitable for manufacturing strong cutting wear, high-grade dies, screw molds, etc.
2, SKH9 high-speed steel because it is only because of the increase or decrease in carbon content, so it does not damage its high temperature characteristics, can continuously and greatly change the properties of steel. When the toughness is required, it can be used as a low carbon steel. When the mold has hardness and wear resistance, it is suitable to use a high carbon steel clock. Suitable for manufacturing tools that require toughness and shape, milling cutters, drill bits, etc.
Heat treatment method for SKH9 high speed steel:
1, SKH-9 through forging to reach a temperature of 1.100 ~ 900 ° C
2. SKH-9 annealing: first heat to 800-850 ° C, stay at this temperature for two to four hours, then let it cool in the furnace.
3, SKH-9 quenching: first preheated to 550-600 ° C, heated to 950 ° C, and then heated to different temperatures according to its use, heating to 1,220 ~ 1250 ° C when making general tools, the production form is complex Heat up to 1,200 ° C to 1230 ° C when tools requiring toughness are required. Hardened in oil, but the oil temperature must first moisturize 40-60 ° C
4, SKH-9 tempering: heating to 550-570 ° C, stay at this temperature, and then cool in still air, tempering must be repeated twice
5, SKH-9 hardness: HRC63 ° C or more
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2. Steel type: MR
3. Thickness: 0.115 - 0.50 mm
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