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一、拉模发展概况拉模成型机是我国砼预制行业科技人员根据国情自行设计制造的产品。开始于七十年代初期,经过十多年特别是近几年的不断改进和发展,已经具有较好的机械水平和较高的生产能力,在成型工艺中越来越显示出它的优越性。现在,黄河以南大部分地区,尤其是江苏、上海、浙江、山东、湖南、湖北、广西、福建等省市自治区使用比较普遍。由于我国住宅的建造量逐年增多,空心楼板约占中小型预制厂总产量的三分之二。过去生产空心楼板多数采用拆装式木模和简
First, the development of die-pull The die-casting machine is a product designed and manufactured by the scientific and technical personnel in the prefabricated industry in China. Since the beginning of the 1970s, after more than 10 years of continuous improvement and development in recent years, it has had a good mechanical level and high production capacity, and it has increasingly demonstrated its superiority in the molding process. At present, most areas in the south of the Yellow River, especially Jiangsu, Shanghai, Zhejiang, Shandong, Hunan, Hubei, Guangxi, and Fujian, are more commonly used. As the construction volume of China’s residential buildings has increased year by year, hollow floor slabs account for about two-thirds of the total output of small and medium sized precast plants. In the past, most of the hollow floor slabs were made of disassembled wooden molds and simple