我厂在生产7馬力的“秦川”牌拖拉机时,焊接是制造的关鍵問題之一,特别是拖拉机的尾部,中碳結构鋼和鑄铁的焊接,成了整个焊接工作中的重要问题。我們根据有关書籍的焊接方法,采用了E-P390铬鎳钼不锈鋼焊条进行焊接,焊后經过檢查和震动载荷試驗,証明質量良好。現将焊接过程和焊接工艺,簡單介紹如 Welding is one of the key manufacturing issues when I plant a 7 horsepower “Qinchuan” brand tractor. In particular, the tractor tail, the welding of medium-carbon structural steel and cast iron have become important issues in the entire welding operation . We use the E-P390 chrome-nickel-molybdenum stainless steel welding rod according to the welding method of books, and after welding, the inspection and the vibration load test have been carried out to prove that the quality is good. Now the welding process and welding process, a brief introduction such as