Year1
- 规格：
- 齐全
- 价格：
- 合理
- 质量：
- 100%正品
. . ,
referred to as,
, is a high-toughness cold work die steel. Its chemical composition is close to the matrix composition of high-speed tool steel. It is a kind of matrix steel, so it It has the high hardness and strength of high-speed tool steel. And because the steel has no excess carbides, it has high toughness and fatigue strength. This steel has high strength, high hardness, good toughness, and high fatigue strength. ,
. . . It has good forgeability. It should be heated slowly during forging to ensure thorough burning. The initial forging temperature should not be too high and the final forging temperature should not be too low. After forging, it should be tempered and cooled slowly (sand cooling or furnace cold) or annealed in time. Steel has good oxidation resistance and is a high-alloy steel with poor thermal conductivity. Compared with high-speed steel and high-chromium tool steel, it has low deformation resistance and good high-temperature toughness. ,
. . . After being heated and kept at r~
℃, the bending strength of oil-cooled quenched r3~
℃ tempered steel is higher than that of high-speed steel, r3~
, the impact toughness is higher than high-speed steel, r3~
times. The quenching depth of this steel: air quenching,
, oil quenching,
. ,
. . . The final heat treatment of this steel is generally quenching and low-temperature tempering (a few use medium-temperature tempering or high-temperature tempering). The hardness after heat treatment is usually above r~
. ,
. . . Chemical composition,
. . . , r~
, ,
, r
, ,
, r
, , r3.~
, , r.~3
, , r.~
, , r.~
, , .~.3
, ,
, r.3
, ,
, r.3
. ,
. . . Typical application examples,
. . . ,
) are used to make cold extrusion dies, screw punches, cold punching dies, drawing dies and wire rolling plates, etc. ,
. . ,
) is used to make cold work dies with impact loads and complex shapes, such as cold heading dies, screw punches, etc. ,
. . ,
) Cold extrusion punch used to make steel parts, select hardness, r~
. ,
. . ,
) is used to make large, complex molds that are subject to large impact loads. ,
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