The double-suction pump of the finishing line is the last cooling water pump of the rolling line, shouldering the dual mission of roll cooling and steel surface quality improvement. Recently, the technical operation of the double-suction pump of the finishing rolling mill was carried out in the operation area of the rolling mill of Longgang Company of Shaanxi Steel Group. , Effectively solve the problem of the small power of the double-suction pump of the finish rolling, the water pressure is not enough, for the company to achieve the most loyal guarding war of the 'Baolong Blue' steel.
In the face of the fact that the power of the double-suction pump of the finish rolling is too small and the water pressure is insufficient, the cooling effect of the roller per unit time is not ideal. This directly affects the surface quality of the finished steel product. The unit operation leader Shi Feng immediately organizes a technical research team to carry out On-the-spot investigation and repeated discussion: 'Whether or not to replace the new pump, if the new pump is not replaced, redesign of the pipeline will have an impact on the water balance of the rolling line...' Based on the combined practice, after detailed scientific demonstration, the research team boldly decided to The small-powered finishing double-suction pump pipes lead to the through-water cooling pipes, so that the wear-pumps can work for the rolling line through the water system, and can simultaneously provide auxiliary pressure for the finish-rolling double-suction pumps, realizing optimization and reconfiguration of equipment resources. After the finalization, the personnel in the maintenance section of the unit took the attitude of 'affecting quality as an accident' and went all out to work overtime. In a short span of 10 days, they completed a series of transformations such as cutting, rebuilding, and welding of a 120-meter-diameter 42.6-cm pipe. jobs.
At present, the operating pressure of the upgraded double-suction pump can reach over 10 kg, the cooling effect of the roller is significantly enhanced, and the surface quality of the steel is significantly improved. This technological transformation can save the purchase cost of new pumps by RMB 90,000; , The cost of spare parts was saved by 100,000 yuan; this technical reform was put into use successfully, and it also stimulated the innovation consciousness of the technicians, which could be described as 'one stroke and four advantages'.