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What errors may occur during CNC machining and CNC machining​?

 CNC machining and numerical control machining are a method to control the movement of machine tools and the production process of machining through computer digitization and information digitization. It is an intelligent numerical control device developed as an economical, high-speed, reliable, multi-functional, intelligent, and open structure. CNC machining is also an important indicator that can measure the continuous level and comprehensive ability of a safety technology, as well as the degree of modernization of related science and technology capabilities, especially in aviation, biology, medical and other high-tech cultural industries, and it is also a powerful indicator. reflect. So, what errors may occur during CNC machining and CNC machining? Let us understand together:   The use of approximate machining motion or approximate tool contours causes errors in the CNC principle of machining. The reason why it is called machining principle error is because of the error in machining


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What are the rules for metal stamping die scrap tube?

The Purpose Standardize the management of the scrapping of the company's metal stamping dies, prevent the loss of company assets, and formulate this system specially. Scope of application It is suitable for the management of the company's scrap molds. Definition If the molds listed in the assets of the company fall under one of the following circumstances, the use management department may apply for scrapping. 1. Molds that exceed the specified service life. 2. The mold is severely damaged by accidents or accidents, and molds that cannot be repaired or have no repair value. 3. Metal stamping dies that have not reached the service life, but due to safety, quality, efficiency and other issues, the repair still fails to meet the minimum requirements of the customer's product process or affects the production safety and efficiency. 4. Product customers have stopped placing orders or have not placed orders for molds in several years. 4. Responsibilities 1. Responsibilities of th

Analysis on the matching of auto parts industry

China’s auto parts industry is highly fragmented, a single individual has little capital, and its competitiveness is weak. It cannot form a strong competitive advantage by itself. At present, China’s auto parts industry is still at a low level, with repeated fragmentation, low concentration, and single supporting facilities. Most of the auto parts companies only provide a complete set of auto parts, unable to form a large-scale production, can not effectively reduce the cost of enterprises. At the same time, the product structure of auto parts is unreasonable. There are too few high-tech products and high value-added products. They are mainly concentrated in labor-intensive low value-added products. The scale is small, the product types are more, and the level of specialization is low. Low production efficiency.

At 20°C to 40°C, the NOx mass fraction shows an upward trend. This is due to the decrease in the proportion of premixed combustion at the initial stage of combustion and the earlier occurrence of the highest explosion pressure. When the intake air temperature is from 40℃ to 50℃, the mass fraction of NOx shows a downward trend. This is due to the shortening of the combustion reaction time and the decrease of the maximum explosion pressure. In addition, the combustion avoids the top dead center and more combustion is concentrated in the downward phase of the piston. reason.

In summary, lowering the intake air temperature can effectively reduce soot and NOx emissions. Under the conditions of an intake pressure of 2.6MPa and an EGR rate of 0.3, the effects of different intake temperatures on the combustion of high-density and low-temperature diesel engines are studied, and it is concluded that the combustion mode of high-density and low-temperature diesel engines has greater advantages in achieving low emissions and high thermal efficiency. potential. Due to the low market access standards in China’s auto parts industry, more and more manufacturers have entered, which has led to a narrowing of the distance between price and cost. The specialization of technical equipment and labor organization has promoted the improvement of the efficiency of enterprises in the industrial cluster.

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