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Ninggang QC Group won the first prize of the National Metallurgical Quality Alliance Cup

Date: 2018-07-31
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Recently, the 40th anniversary of the quality management activities of the national metallurgical industry and the 20th "Metallurgical Quality Alliance Cup" outstanding QC group exhibition exchange meeting was held in Xining City, Qinghai Province. At this meeting, the QC team of Ningbo Iron and Steel Manufacturing Co., Ltd., a wholly-owned subsidiary of Hangzhou Iron and Steel Manufacturing Co., Ltd., won the first prize for the reduction of the cold rolling edge crack ratio under the pressure of 65Mn. The best result since the competition.

The Metallurgical Quality Alliance Cup of the Metallurgical Industry is a mass quality improvement activity in the metallurgical industry, held once a year, representing the highest level of QC activities in the metallurgical industry. In this competition, 306 quality research teams from major steel companies across the country participated in the competition. After written pre-selection, 68 outstanding teams were promoted to the scene for selection.

During the on-site release process, the quality of the hot rolled coils of the Ninggang Manufacturing Management Department QC team was highly recognized by the judges and the audience with its rigorous results logic and effective results. The results of the on-site release ranked fourth in the group, refreshing In the highest ranking in history, the result of reduction of the cold rolling edge crack ratio under the pressure of 65Mn was awarded the first prize. During the exhibition, the judges also presented the “Reason for the Topic” and “Standardization Summary” sections of the project as excellent demonstration cases.

Ninggang recommended the reduction of the cold rolling edge crack ratio under the pressure of 65Mn. The selection of the results closely focused on the needs of high-end customers, aiming at the problem of high cold-rolling edge cracking rate under 65Mn large pressure, through advanced learning, finding gaps, re-testing, gathering Analytical and other means, layer-by-layer analysis of the problem and find the final crux, and in accordance with the principle of 5W1H, formulated "reducing the amount of ferrochrome added", "optimizing the cold-rolling system of the hot-rolling system" and "the edge of the cold-collecting layer of the occlusion layer" The countermeasures have succeeded in reducing the cold rolling edge cracking rate of 65Mn from 85%/month to 9%/month, meeting the needs of high-end customers, and making the product quality reach the domestic leading level. The 65Mn wide coil fills the high-end of East China Product blanks.


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