21-04-2010 дата публикации
Номер: CN0101696484A
Автор:
DAHUA HOU,
XUEQIN LI,
GUANGWU ZHOU,
ZHENHUI HUANG,
XIAOPING LUO,
JIMENG AI,
JIDONG WANG,
LIEJUN LI,
HU XIAO,
CHUANZHU YANG,
YANCHENG LI,
LINYU WEN,
YUNFENG GUO,
WEIJIANG FANG,
YONGMING XIE,
HOU DAHUA,
LI XUEQIN,
ZHOU GUANGWU,
HUANG ZHENHUI,
LUO XIAOPING,
AI JIMENG,
WANG JIDONG,
LI LIEJUN,
XIAO HU,
YANG CHUANZHU,
LI YANCHENG,
WEN LINYU,
GUO YUNFENG,
FANG WEIJIANG,
XIE YONGMING
Принадлежит:
The invention discloses a chromium-containing HRB400 hot-rolled ribbed steel bar, which comprises the following components in percentage by weight: 0.18 to 0.24 percent of C, 0.40 to 0.65 percent of Si, 1.20 to 1.50 percent of Mn, 0.15 to 0.25 percent of Cr and 0.045 to 0.065 percent of V. The invention also discloses a production method for the chromium-containing HRB400 hot-rolled ribbed steel bar, which comprises processes of converter or electric furnace smelting, refining, argon blowing treatment, billet continuous casting, casting blank entering a heating furnace, hot rolling, air cooling, sizing and bundling, wherein the billet continuous casting and continuous rolling process parameters comprise continuous casting blank heating temperature of between 1,100 and 1,250 DEG C, soaking temperature of between 1,150 and 1,230 DEG C, rolling starting temperature of between 1,050 and 1,100 DEG C and free air-cooling mode. By adopting a chromium-containing micro-alloying process, the components ...
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