起重臂损坏修复VS更换新件

Damaged Booms of Crane:Repairs VS Replacement

当起重机起重臂损坏后，摆在用户面前的问题是修复还是更换新件。制造商一般会反对进行修复，他们认为修复后的起重臂安全性得不到保证，而用户则认为，起重臂的修复要比更换新臂费用低很多，而且日益成熟的维修技术和材料能使安全性得到保证。问题是修复后的起重臂与原起重臂相比，所能承受的载荷是否一样？安全性有多高？制造商、用户和维修部门从各自的请看几位专业人士有关本话题的观点。

When the boom of crane is damaged, the user will face to the choice between repairs and replacement. The manufacturers can generally be against the repairs and think that the safety of repaired boom can not gurantecd. But the users consider that the cost of remedy is much less than that of replacing a new boom and the increasingly mature maintenance technology and materials are the gurantee of safety for a boom to be fix. The same are the loadbearing capacity and safety of repaired booms and new ones? Do the manufacturers, users and service sectors solve effectively the problem from respective angles? Which is better, repairs or replacement? Please read the opinion from professionals on the topic.