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过去我国使用的薄壁异型钢材是进口的,1963年6月份,某有色冶炼厂321~#卷帘板需要迅速修复,而制做321~#卷帘板的钢材的技术要求很高,要保证在400℃较高温度的情况下仍灵活好用,一个动作卷帘即能全部收起或放下。上海钢铁研究所轧钢试验厂,用冷拔方法进行了试制,解决了用户的急需。同时还试制和供应了供高级宾馆、高级建筑用的钢窗及汽车风窗槽等。生产上述产品是用马达7KW730转/分,拉拔速度12米/分的链式拉拔机;马达为7马力1140转/分,拉拔
In the past, China’s use of thin-walled shaped steel is imported, in June 1963, a non-ferrous smelter 321 ~ # shutter plate needs to be quickly repaired, and made 321 ~ # shutter plate steel technical requirements are high, to ensure At 400 ℃ under the conditions of high temperature is still flexible and easy to use, an action shutter that can be all stowed or down. Shanghai Iron and Steel Institute of rolling test plant, with cold-drawn method of trial production, to solve the urgent needs of users. At the same time also trial and supply for high-level hotels, high-rise buildings with steel windows and car wind chute and so on. Production of the above products is the motor 7KW730 rev / min, drawing speed of 12 m / min chain drawing machine; motor horsepower to 1140 rpm / min, drawing