对连铸生产线上的板坯进行定尺切割,而在板坯切口下侧不留渣瘤的氧气切割法,由日本住友金属工业和小池酸素工业(即小池氧气公司)共同开发,最近在鹿岛制铁所的3号连铸机上试验成功。利用氧气切割连铸板坯时,由于熔化的铁和渣沿切口流动,因此不可避免地会在板坯的切口下侧附着渣瘤。这种渣瘤是在轧制时造成轧辊和轧材缺陷、致使成材率下降的重要原因。现在虽然采取了机械法(刮刀式)或手工清理等去瘤措施,但仍不能完全根除,而且还存在质量和生产率方面的问题。无渣瘤氧气切割法不管板坯的材质如何,都能在切割的同时将渣瘤去除。所以它不仅能缩短板坯的处理时间,还可望收到轧制质量稳定、成材率高和节能的效果。为此,将尽早使 On the continuous casting line slab cutting, and slab incision not leaving slag tumor under the oxygen cutting method by the Japanese Sumitomo Metal Industries and Kotake acid industry (that is, Koike Oxygen Company) jointly developed in the recent deer Island Ironsteel No. 3 caster successfully tested. When oxygen is used to cut a continuously cast slab, slag and slag inevitably attach to the underside of the slab cut since melted iron and slag flow along the cut. This kind of slag tumor is an important reason for the decline of the finished product rate caused by rolling and rolling defects during rolling. Nowadays, although the tumor removal measures such as mechanical method (scraper type) or hand-cleaning are still not completely eradicated, problems of quality and productivity still exist. No slag tumor Oxygen cutting method regardless of the material of the slab, can be cut at the same time remove the slag tumor. So it can not only shorten the processing time of slab, but also expect to receive stable rolling quality, high yield and energy saving effect. To this end, will be made as soon as possible