Hebei blast furnace overhaul process

BF Maintenance process: a) Maintenance period: 1, the outlet for the production of a small set of consumable parts, according to the production of timely replacement. 2, large outlet cover: replacement repair under the circumstances Dazhong, if the production of a large set of burning leak occurs, replacement should be off the wind. 3, elbows should be based on usage, random replacement. B) Maintenance: 1, if burning and leaking air cover, should be replaced. 2, medium and large repair, the short section and boom, elbow, replaced. 3, the structure of a small set of air form. Not allowed to freely change is unauthorized. Indeed due to operational needs change, the need to sign the approval by the deputy director of the production. C) the maintenance of air equipment installation quality standards: 1, the outlet flange and rod large blast furnace bricklaying before installation, pre-installation check whether the various dimensions of the drawings. 2, outlet center large set of elevation deviation is less than ± 3 mm. 3, the horizontal center of each corresponding outlet connection, should blast the centerline intersect at one point, its deviation is less than 10 mm. 4, the inlet to the outlet flange bend spherical spherical flange outer edge of a small set of distance, deviation is less than 5 mm. 5, a small set of air extends into the blast furnace type size must meet the design requirements, deviation is less than 5 mm. 6, the gasket between the flange application φ12㎜ dip lead Whetstone Miansheng, the gap should not exceed 4 mm after tight during ovens would also need to tighten twice. 7, sphere, cone must work closely with the contact points, the gap is not greater than 0.05 mm. More attention http://www.weilongjianshe.com/ blast furnace overhaul Content