SKH-9] [Hongyuan Hongyuan] [SKH-9 steel SKH-9] [Hongyuan mold steel] [Hongyuan Hitachi SKH-9] [Hongyuan SKH-9 pre-hardened material SKH-9] [Hongyuan Clinker SKH-9] [Hongyuan Hongyuan] Price [SKH-9 heat material SKH-9] [Hongyuan hard materials SKH-9] [Hongyuan steel SKH-9] [Hongyuan rod SKH-9 specialty ①W -MO series (6-5-2 type) high-speed tool steel, the most universal, especially in SKH-9 (SKH51) is a lot of usage in the world, instead of the W-type high speed tool steel SKH2. ② fine carbide organization , neat, well distributed. And homogeneous. Therefore, a more balanced wear resistance and toughness. Particularly because only on the increase or decrease in carbon content and therefore does not damage the high temperature characteristics, continuous and substantial change in the nature of steel. You need a low carbon steel for toughness and lower hardness, wear resistance required in the circumstances for the selection of high carbon steel bell. ③ full of hot, cold plastic, is cutting and grinding is also good. SKH-9 uses cutting: drills, taps, reamers, circular saws, gear cutters, broaches, planer and so on. Mold: a variety of hot, cold die and punch, cutter, cutting knives, gadolinium roll tools. SKH-9 Hitachi YSS Yasugi steel is cold mold tool steel, also known as tungsten YXM1 amounted to more than 5.5% Hitachi SKH-9 special high-quality and high-speed tool steel relatively standard features: M2 chemical composition analysis results (%): C: 0.8 -0.9 silicon: 0.45 Cr: 3.8-4.5 Mn: 0.45 Mo: 4.5-5.5 V: 1.6-2.2 W: 5.5-6.7 Phosphorus: 0.03 S: 0.01 Steel properties: wear resistance, toughness, high hardness, high-speed steel Steel General Purpose: suitable manufacturing powerful cutting wear and senior Heng die, screw die, more complex required toughness and shape tools, milling cutters, drills and other factory condition and hardness (surface): 255HB / 60-64HRC SKH-9 theory calculate square test name (units) formulas to calculate symbolic meaning for example round rod (kg / m) W = 0.006165 × d × dd = mm diameter 100 mm diameter round bar, find the weight per m. Weight per m = 0.006165 × 1002 = 61.65kg SKH-9 forging technology and features: Forging: 1.100 ~ 900 ℃ annealing: heating to 800-850 ℃, stay at this temperature in two to four hours, let it gradually in the oven cold. Quenching: first pre-heated to 550-600 ℃, times and heated to 950 ℃, and then heated to a: 1,220 ~ 1250 ℃; b: 1,200 ℃ ~ 1230 ℃. Hardened in oil, but oil must be moisture 40-60 ℃ (a general tools; b form of complex tools required toughness.) Tempering: heating to 550-570 ℃, stay at this temperature, and then still air cooling, tempering must repeat the second Hardness: HRC63 or more. Purpose: This is tungsten steel high-speed steel, suitable manufacturing powerful cutting wear and impact resistance of various tools, and advanced die, screw die, more complex tools required toughness and shape, cutter, drill and so on.