用断裂失效分析手段,对铁路重轨闪光焊灰斑缺陷的性质及其形成机制进行了分析,查明了灰斑由聚集的硅酸盐夹杂物所引起.它是在焊接过程中形成的,与焊接工艺规范有直接关系.
Study was carried out on the nature and origin of the flat spots in flash- welded seams of the rails by the technique of failure analysis.It was detected that the flat spots are originated from the coalescence of silicate inclusions which are formed in the process of flash-welding and are closely related to the welding technical specification.
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