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亚洲金属轧铸厂每年生产的加工面粉用冷铸轨辊,数量较大。这种轧辊的特点,要求表面具有坚硬耐磨的白口层,白只层厚度为14毫米左右,表面硬度为H_S70以上;同时要求具有足够的强度,以防断裂。以往采取直式工艺生产时,白口层很难控制,且易产生纵裂和横裂、夹杂、表面气孔等一系列缺陷,因而废次品较多。鉴于这种情况,该厂进行了离心浇铸的新工艺试验,经过数十次的摸索探讨,终于获得成功,主要缺陷如横裂和气孔等不再发生,其他缺陷亦显著减少,质量达到要求,并已成批投入生产。
Asian metal rolling plant annual production of processed flour with a cold cast roller, a larger number. The characteristics of this roll, the surface requires hard wear-resistant white layer, white layer thickness of about 14 mm, the surface hardness H_S70 above; also requires sufficient strength to prevent fracture. In the past to take straight-process production, white stratum difficult to control, and prone to longitudinal cracking and transverse cracking, inclusions, surface porosity and a series of defects, and therefore more defective scrap. In view of this situation, the plant has carried out centrifugal casting new technology test, after dozens of exploration and discussion, and finally succeeded, the main defects such as transverse cracks and stomata and other no longer occur, other defects have also significantly reduced the quality to meet the requirements, And has been put into mass production.