09-05-2023 дата публикации
Номер: CN116083807A
Автор:
PENG CHONG,
LIU JIANFENG,
SHUAI YONG,
YUAN JING,
TANG XIAOYONG,
YANG YUANHUA,
YANG TONGLI,
YANG FAN,
MA PENGFEI,
ZHONG XIAOJIE,
HUANG ZHEN,
XU XIHUA,
LI LEI,
ZHONG HAIQING,
CHEN JIANHUA,
ZHOU LINGFENG
Принадлежит:
The invention provides steel for a brake drum and a manufacturing method thereof.The steel comprises 0.08%-0.10% of C, smaller than or equal to 0.08% of Si, 0.50%-0.80% of Mn, smaller than or equal to 0.015% of P, smaller than or equal to 0.005% of S, 0.02%-0.05% of Als, 0.005%-0.01% of Nb, 0.002%-0.004% of La + Ce, smaller than or equal to 25 ppm of O, smaller than or equal to 40 ppm of N and the balance Fe and other inevitable impurities, the content of Mn is low, only trace Nb alloy strengthening elements and rare earth elements are added, and the manufacturing cost is low; the manufacturing method is good in stability, and the finally obtained finished product is uniform and fine in structure and small in mechanical property fluctuation; the product is low in yield ratio, high in elongation, good in thinning spinning performance, high in surface quality, suitable for producing brake drums of various models and beneficial to large-scale application and popularization of brake drum production ...
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