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[本刊讯]日前,北营铸管公司经过近半年时间的技术攻关,利用台车式退火炉,采用热处理工艺矫正离心机流槽曲度技术攻关获得成功。至此,因弯曲报废的DN500mm以上大口径离心机流槽可全部再修复使用。据悉,此项技术填补了球墨铸管行业的一项空白。离心机流槽作为球墨铸铁管离心浇铸工艺的主要部件和环节,在生产过程中受高温铁水和工艺等因素的影响,对不同规格、长度分别为6.4~6.85米的流槽而言,极易产生弯曲变形,导致废品率的升高,严重变形的流槽直接下机报废,很大程度上增加了单位制造成本。球墨铸管行业通常对弯曲变形的流槽采用
[Benxi hearing] A few days ago, Beiying Ductile Iron Pipe Casting Company after nearly six months of technical research, the use of trolley annealing furnace, the use of heat treatment technology to correct curvature of the centrifuge runner technology to achieve success. At this point, due to bending scrap DN500mm large diameter centrifuge runner can all be repaired. It is reported that this technology to fill the ductile cast pipe industry a blank. Centrifuge runner as a ductile iron pipe centrifugal casting process of the main components and links in the production process by the high-temperature hot metal and process and other factors, for different specifications, the length of 6.4 ~ 6.85 meters respectively, the slot is extremely easy Resulting in bending deformation, resulting in increased rejection rate, severe deformation of the launder directly under the machine scrapped, to a large extent increased the unit manufacturing costs. The ductile cast pipe industry is usually used on curved flow channels