Welding the Steel Rail of Heavy-Duty Lifting Machine by Using Manual Arc Welding Method

The usually methods to weld railway of heavy-duty lifting machine are gas pressure welding,thermit welding and contact welding to date in the country.All of the three welding methods need appropriative welding equipment,but our companyhasn't any of these appropriative welding equipment.We will spend more money on the equipments if we buy the equipment,and the equipment utilization ratio is low in the company,moreover the welding technology very complex and the welding cost is high.The paper introduced a method of using manual metal arc welding method to weld E360(St70) steel rail,the method adopt logical welding technology,and use corresponding clamp apparatus,succeed in solving the steel rail welding problem.Using the manual metal arc welding method not only saved the investment of appropriative welding equipments,ensured the production quality,but also increased the welding efficiency.