14-10-2009 дата публикации
Номер: CN0101555573A
Автор:
HAIYAN WANG,
YONG HUANG,
ZHIHUI SU,
LIN LI,
WENJUN QI,
SIYONG ZHAO,
DENG NONG,
YUNSHENG LEI,
HUI ZHANG,
FENG ZHANG,
FEIYAN ZHENG,
KAIHONG ZHENG,
WANG HAIYAN,
HUANG YONG,
SU ZHIHUI,
LI LIN,
QI WENJUN,
ZHAO SIYONG,
NONG DENG,
LEI YUNSHENG,
ZHANG HUI,
ZHANG FENG,
ZHENG FEIYAN,
ZHENG KAIHONG
Принадлежит:
The invention relates to an alloy steel and a heat treatment method thereof. The invention is characterized in that the alloy steel comprises the elements according to the mass percent: 0.2-0.3% of C, 0.4-0.6% of Si, 1.2-1.5% of Mn, 0.8-0.9% of Cr, 1.8-2.0% of Ni, 0.2-0.4% of Mo, 0.01-0.1% of RE, 0.03-0.06% of Nb, 0.002-0.004% of B, less than 0.04% of P, less than 0.04% of S and the rest of Fe. The heat treatment method of the alloy steel is characterized in that the alloy steel is heated up to 930-950 DEG C at the speed of 100DEG C/h, the temperature is maintained for 4h, and then furnace is cooled to 250 DEG C; reactant is heated up to 900-920 DEG C at the speed of 100DEG C/h, the temperature is maintained for 4h, and then the water temperature is cooled to 20-45 DEG C by water cooling or air cooling; then the reactant is heated up to 250-300 DEG C again followed by being processed by furnace cooling. The alloy steel and the heat treatment method thereof lead the hardness and the wearing ...
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