
From the above, it is not difficult to find that the “access conditions†has a higher threshold for tire companies. However, it is foreseeable that the current domestic tire companies' uneven production scale can be foreseen. After the “access conditions†are formally implemented, the number of tire industries The big reshuffle since the beginning of the year will be triggered. There will be a large number of small and medium-sized enterprises facing the fate of “delisting†and a new industrial structure will emerge.
With the gradual increase in the number of car ownership, the production scale and production volume of tire companies have also grown rapidly. At present, from the current layout of the domestic tire industry, more than 80% of the market share is occupied by foreign tire companies. This includes the matching market and the replacement of the tire market. In contrast, the market share of self-owned brand tire companies is quite limited. In addition to supporting a number of low-end car brands and a small number of replacement tire markets, there is almost no profit point.
The advent of the "access conditions" will inevitably accelerate the death cycle of domestic small and medium-sized tire companies. Because in the future, according to the "access conditions" content, must pass the national relevant departments to test, tire enterprise's energy consumption and other aspects of qualified indicators of tire companies will enter the announcement, failed to be rectified or eliminated.
In this regard, the industry sources said that at present, China's tire companies are still basically in the low-end imitation stage, independent brand tire companies do not have the core technology. Except for exquisite tires, triangular tires and other large-scale independent brand enterprises, there are more small and medium-sized independent brands that have relatively weak survivability and rely on imitation for a lifetime. After the introduction of the tire admission policy, it means that the tire company's production capacity and product quality requirements will be further improved, and this part of tire companies will be eliminated.
In contrast, when foreign tire companies enter the country, they have already carried out a series of assessments, such as environmental assessment of one of the important indicators. Therefore, in the face of the forthcoming “access conditions,†foreign tire companies are not worry.
At present, the domestic tire market is divided into two camps. One is the foreign tire enterprises represented by Bridgestone, Michelin, Hankook, and Kumho, and the other is China's own brand. At present, only a few brands such as triangular tires and exquisite tires are known to the general public. The rest are some unknown small and medium-sized tire companies.
Judging from the definition of the “access conditions,†these unknown small and medium-sized tire companies will soon face the limits of life and death. “The phenomenon of small and complex self-owned brands in the tire industry is very prominent. There are only 300 companies that manufacture tires in the Dongying area of ​​Shandong Province.†A tire industry veteran told reporters, “These are currently no R&D processes and rely solely on imitation of foreign capital. The tire tread pattern, rolling power, braking and handling performance parameters of the brand tires are manufactured and manufactured, including some domestic top-ranking large-scale self-owned brand tire companies, and their R&D capabilities are also in an initial state.â€
It can be foreseen that under the background of the country's adjustment of its economic structure, elimination of backward production capacity, and governance environment, the key to the current development of the tire industry is not to increase production, but to upgrade the grade and quality of products, adjust product and industrial structure, and change the mode of growth. Increasing industry access conditions is only the first step.
CNC Turning is namely Lathe machining, Lathe machining is a portion of mechanical processing.
Lathe machining is always a process that turning tools doing turning machining to a rotary workpiece. On CNC lathes, the operators or the engineers also can use drills, reamers, screw taps, threading dies and knurling tools to make relative machining work. CNC turning is usually applied to machining shafts, plates, bushings and all other workpieces which have rotary surfaces, it is a very widely application in practical mechanical manufacturing.
CNC turning can be divided into rough turning and finish turning, rough turning is for the purpose of machining with big cutting depth and big feed rate, to improve the machining efficiency. However, the precision of rough turning can only be grade IT11, the surface finish can only be Ra 20-10um. On the contrary, semi-finish machining and finish machining usually can only apply high speed but small feeding rate and cutting depth. In this condition, the machining accuracy can be up to grade IT10-7, the roughness can be Ra10-0.6um.
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