Quality Control Issues in Mechanical Processing Manufacturing

According to statistics, during the “10th Five-Year Plan” period, the proportion of the output value of the mechanical processing manufacturing industry in the national industry exceeded 25%, which played an important role in China’s economic development and national rejuvenation. China's mechanical processing and manufacturing industry has leapt to the top of the world. However, at the same time, we must see the gap between China's machinery manufacturing industry and the developed countries in the world, and the quality of mechanical processing and manufacturing still does not adapt to the economic development situation. We must see that product quality is safe for downstream industries and The impact of economic benefits. According to statistics from the General Administration of Quality Supervision, Inspection and Quarantine, the national quality loss in 2006 accounted for 0.29% of the total industrial output value, of which the internal loss was 0.15% and the external loss was 0.14%.

The impact of mechanical product quality on petrochemical production is even more prominent. Take Daqing Petrochemical Company as an example. In 2007, the number of mechanical failures caused by the quality of mechanical equipment was 452 times, accounting for 6% of total annual failures. The failure rate of component quality was 0.68%; the failure rate of mechanical seal was 0.98%. Although the statistics of the failure rate of bearings and mechanical seals were lower than the “China Consumer Rights Protection Forum 2007”, the Deputy Director General of the State General Administration of Quality Supervision, Mr. Pu Changcheng, introduced that the failure rate of Chinese product quality inspections in 2006 was 9.4%. However, due to the special nature of our petrochemical production, high temperature, high pressure, high-risk production environment, and sometimes even a small screw failure, it can also cause serious safety accidents and huge economic losses. The economic loss caused by a single device shutdown is as high as 100 More than 10,000 yuan. In 2006, we conducted sampling inspections on the materials of the bolts used in the company's incoming equipment every year. In 1998, 2000, and 2005, the defective rate of matching bolt materials reached 2.18%, 1.49%, and 1.11%, indicating that the quality situation was serious.

As an important manufacturing and processing base in the world, China’s mechanical processing occupies a large part. To make China’s mechanical processing catch up with the advanced developed countries in the world, in addition to increasing scientific research and other measures, we must strengthen quality control and improve product qualification to Important. Suggestions are made as follows: increase the research on quality standards, appropriately reduce the expected profitability of products, increase the stringency and level of standards; strengthen the implementation of standards, research and establish a system of product lifelong identity; strengthen factory inspection and national sampling, and user sampling; In addition to compensating for direct losses, users should also bear a certain percentage of indirect losses as a result of user loss caused by product quality; regular exposure to quality inspections of product quality is conducted in the media. The product should be continuously tracked, the rectification within a time limit, and the decisive halt; strengthen the investment and guidance for independent innovation of enterprises and industries, and improve the ability of independent innovation. Increase the investment in replacement of mechanical processing equipment and improve the level of equipment; machinery manufacturing enterprises should strengthen management, strengthen the management of basic refinement, strictly implement the requirements of quality management system, control the various levels that affect product quality, and produce high quality and high levels of user confidence. Reputation mechanical products.