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纵向裂纹是与铸件开摸方向平行的一种裂纹,这种裂纹顺着铸件型壁裂开,故称为纵向裂纹。这种裂纹也和其它裂纹一样,在外力的作用下有发展的趋势,是铸件的一种致命缺陷。 我厂生产的某产品盖子压铸件,材料为:ZLS和某产品摇臂压铸件,材料为ZZnA14-1都曾产生过这种缺陷,报废了大量铸件,一度形成了对生产的严重威胁,为了解决这一问题,我们进行了多次试验,终于摸清了裂纹产生的原因,并提出了有效的
Longitudinal crack is a kind of crack which is parallel to the direction of casting. The crack cracks along the casting wall, so it is called longitudinal crack. Like other cracks, this kind of crack also has the tendency of development under the action of external force. It is a fatal flaw of casting. I produced a product cover die-casting, material: ZLS and a product rocker die-casting, material ZZnA14-1 have had such defects, scrapped a large number of castings, once formed a serious threat to production, in order to To solve this problem, we conducted a number of tests, finally found out the cause of the crack, and proposed an effective