前言金属构件的连接,早期各国均采用铆钉连接。但由于劳动强度大、费工、费料、噪音大、析除困难等缺点而逐渐被焊接代替。目前一些工业发达国家,如美国、英国、日本、加拿大等又逐渐采用高强度螺栓来安装金属构件。宝钢电厂全部设备由日本引进,主厂房、锅炉钢架、电气除尘器、输煤线桥等均采用金属构件,并用高强度螺栓连接,其中一部份螺栓由上海先锋螺栓厂生产,质量与日本引进的无差别。高强度螺栓用高强度钢材制成。宝钢电 Foreword The connection of metal components, riveting connections are used in early countries. However, it has gradually been replaced by welding due to its disadvantages such as high labor intensity, labor, material consumption, noise, and difficult to remove. At present, some industrialized countries, such as the United States, Britain, Japan, and Canada, have gradually adopted high-strength bolts to install metal components. All equipment of Baosteel Power Plant was imported from Japan. Metal components were used for the main plant, boiler steel frame, electric dust remover, and coal transmission line bridge, and they were connected by high-strength bolts. Some of the bolts were produced by the Shanghai Pioneer Bolt Factory and the quality was comparable to that of Japan. There is no difference in the introduction. High-strength bolts are made of high-strength steel. Baosteel Electric