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- 规格：
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- 价格：
- 合理
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- 100%正品
. . , r
Steel is a high-speed tool steel containing cobalt. It is made by adding cobalt with a mass fraction of r
on the basis of r
steel and increasing the mass fraction of vanadium by r
to improve the hot hardness of the steel. and high temperatures, improving wear resistance. However, this steel is prone to decarburization. ,
. . The hardness of this steel can reach ,
after heat treatment, and it can maintain high hot hardness at a hardness of , r
. The cutting speed can generally reach ,
, and the hobbing speed can reach ,
. ,
. . Quenching and tempering hardness,
, Flexural strength,
, Impact absorbed energy, r
Hardness at ℃, r
. ,
. . Delivery status,
. . Annealed hardness,
, other processing status hardness,
. ,
. . Chemical composition,
. . , r
, , r
, , r
, , r3
, , r3
, , r3
, , r
, , r.
. . Refer to the corresponding grade,
. . Taiwan, China,
standard grade,
, Japan ,
Standard grades,
, Korea,
Standard grades,
, International Organization for Standardization (,
) standard grades,
, China,
Standard grade, r
, Germany,
Standard grade,
, Germany,
Standard material number, r
, France,
Standard grade, < br/>, Russia, r
standard grade,
, Sweden,
standard grade,
. ,
. . Soft annealing specifications,
. . Annealing temperature,
℃, heat preservation,
, and then rapid cooling at,
℃,
to,
℃, then furnace cooling or pile cooling, hardness,
. ,
. . Isothermal annealing specifications,
. . Annealing temperature,
℃, insulation,
, furnace cooled to,
℃, insulation,
, Then cool it in the furnace to ,
℃, come out of the furnace and air-cool, and the hardness will be,
. ,
. . Quenching and tempering specifications,
. . Preheating temperature,
℃, holding time,
,
, quenching temperature,
℃ , holding time,
,
, oil cooling, tempering temperature,
℃, tempering three times, each time,
, air cooling, hardness, r
. ,
. . Typical application examples,
. . ,
) are mainly used to make cutting tools and cold work molds. ,
. . ,
) used to make gear cutters, milling tools, punches, cutter heads, etc. ,
. . ,
) Most tools made of this steel are used for processing hard materials, cutting heat-resistant alloys and making high-speed cutting tools. ,
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