一、焊接与能源消耗目前世界生产的钢铁,40～60%是通过焊接加工成产品的。我国机械制造行业每年生产焊接件所耗用的钢材约占全行业钢材消耗量的20～30%左右。焊接要消耗大量能源,例如安装一台12.5万kw汽轮发电机组的400t/h锅炉,要耗电13.25万度。生产一条万吨油轮耗电达65万度。在日本造船厂,电焊机耗电 First, the welding and energy consumption The world’s current production of steel, 40 to 60% is processed into products by welding. China’s machinery manufacturing industry annual production of welded steel consumption accounts for about the entire steel consumption of about 20 to 30%. Welding consumes a lot of energy, for example, installing a 400 t / h boiler of 125,000 kw turbo-generator to consume 132,500 kWh. Production of a million tons oil tankers up to 650,000 degrees. In Japanese shipyards, welding machine consumes electricity