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W12Mo3Cr4V3N(V3N)资料比较少

Description

  W12Mo3Cr4W12Mo3Cr4V3N钢是一种无钴超硬高速钢。它是中国研制的一种无钴超硬高速钢,它比一般的高速钢硬度高,耐磨性好等优点,可用于工作条件跟苛刻的冷作模具

W12mo3cr4W12Mo3Cr4V3N steel is a cobalt free superhard high speed steel. It is a cobalt free superhard high-speed steel developed in China. It has the advantages of higher hardness and better wear resistance than ordinary high-speed steel. It can be used in cold working dies with harsh working conditions

Chemical Composition%)of W12Mo3Cr4V3N Steel Material
CCrWVN
1.204.0012.003.00>0.04
     

Composition design features of W12Mo3Cr4V3N:

高C:C对冷作模具钢的强韧性、耐磨性有决定性的影响。含碳量增加,则抗压强度及耐磨性增加。因此,抗冲击及高强韧冷作模具钢含碳量较高。

高V:V强烈细化晶粒,强烈提高耐磨性、红硬性及二次硬化能力。但含量过多会明显恶化可锻性及磨削性。

含N:N可细化晶粒,又有析出强化的作用,且机械性能及焊接性能都较好。

High C: C has a decisive effect on the strength, toughness and wear resistance of cold working die steel. With the increase of carbon content, the compressive strength and wear resistance increase. Therefore, the carbon content of impact resistant and high strength and toughness cold working die steel is high.

High V: V can strongly refine the grain, and strongly improve the wear resistance, red hardness and secondary hardening ability. However, excessive content will significantly deteriorate the malleability and grindability.

Containing N: n can refine grains, precipitate and strengthen, and has good mechanical properties and welding properties.

Heat Treatment:

1软化退化:加热温度840——860℃,保温时间2h,以20——30℃/h的冷速冷却到温度500—600℃,然后炉冷或者堆冷,硬度≤293HBS

2等温退火:加热温度840——860℃,保温时间2h,炉冷到温度740—750℃,保温时间2—4h,在炉冷到温度500—600℃,出炉空冷,硬度≤285HBS

3淬火 回火:

预热温度850℃,保温时间24s/mm。淬火加热温度1220——1280℃,时间12—15s/mm,油冷却淬火,530℃—560℃回火,回火4次,每次1h,空冷,淬火、回火后硬度66——69HRC.

1 softening and degradation: heating temperature 840-860 ℃, holding time 2h, cooling to temperature 500-600 ℃ at cooling rate of 20-30 ℃ / h, then furnace cooling or heap cooling, hardness ≤ 293hbs

2 isothermal annealing: heating temperature 840-860 ℃, holding time 2h, furnace cooling to temperature 740-750 ℃, holding time 2-4h, furnace cooling to temperature 500-600 ℃, outlet air cooling, hardness ≤ 285hbs

3 quenching and tempering:

Preheating temperature 850 ℃, holding time 24s / mm. Quenching heating temperature 1220-1280 ℃, time 12-15s / mm, oil cooling quenching, 530-560 ℃ tempering, tempering 4 times, 1H each time, air cooling, hardness 66-69hrc after quenching and tempering

Features and Application:

W12Mo3Cr4V3N superhard cold work die life than the Cr12MoV, Cr12 common mold life expectancy increased by 3 to 5 times higher than the current ordinary high-speed steel, 2 to 10 times, more significant economic benefits, W12Mo3Cr4V3N steel mold performance equivalent to the international market now 10% Co-containing high-speed steel.

W12Mo3Cr4V3N superhard excellent performance of high-speed steel, suitable for processing cold-working die, blanking die, life is significantly improved. W12Mo3Cr4V3N steel thermal processing more stringent 1220° to 1230 ° C quenching, 550 ° C for 1 hour tempering, cryogenic treatment and then finishing by high hardness, high wear resistance and good toughness can be obtained with the use of the process can also be to the stress of tempering in order to extend the life of the die on a regular basis.