"12th Five-Year" output target 700 billion yuan China's machine tool industry in the "Eleventh Five-Year" period basically achieved steady and rapid growth, especially in 2009 the industry's total industrial output value of 401.4 billion yuan, leapt to become the world's first machine tool production country. As the basic industry of the national economy, the "12th Five-Year Plan" of the machine tool industry has attracted much attention.
Miao Miao, Vice Minister of Industry and Information Technology, put forward: “The 12th Five-Year Plan of the machine tool industry should be integrated with the overall planning of the national and industrial industries, combined with the development of strategic emerging industries, and the actual machine tool industry. At the same time, industry enterprises should highlight the construction of independent innovation systems with enterprises as the main body, increase the development of CNC systems, functional components and tools, and increase service awareness and brand innovation capabilities.
Wang Liming, vice chairman and secretary general of the China Machine Tool Industry Association, put forward the main objective of the “Twelfth Five-Year Planâ€: “To the end of the Twelfth Five-Year Plan, the machine tool industry will achieve an industrial output value of 700 billion yuan; the annual output of CNC machine tools will exceed 200,000. Taiwan, the domestic market share of more than 70% (by sales); industry-wide annual export volume reached 10 billion US dollars, of which machine tool exports accounted for more than 40%. "Meanwhile, during the "Twelfth Five-Year" period to speed up the product structure adjustment, Further improve the industrial chain, implement the adjustment of the enterprise structure through the combination of policy orientation and market economy, increase the professional production level of the manufacturing process, and optimize the structure of import and export trade. Wang Liming pointed out in the "12th Five-Year Plan" points that further improvement of the industrial chain is to break the bottleneck in the development of CNC machine tools, to develop functional components and numerical control systems; to encourage the development of CNC tools, complex tools, and precision measuring instruments; Abrasives and superhard materials and products. Among them, the middle and high-end numerical control systems, numerical control tools and so on will all become the development priorities of the "Twelfth Five-Year Plan". The "development of manufacturing services" will also become one of the major tasks during the "12th Five-Year Plan" period.
Structural adjustment pressure is not reduced Structural adjustment is the current major task of the industry, and will also be the main task facing during the “12th Five-Year Plan†period.
The growth rate of China's machine tool industry has surpassed most people's expectations since this year, especially in March-June. There has even been a “blowout†in June and June. In June, the industrial output value of the entire industry exceeded 50 billion yuan, and the output value in the four consecutive months increased by more than the same period last year. 40%. From January to August, the industrial output value reached 336.5 billion yuan, a year-on-year increase of 42.2%. The export volume reached US$4.4 billion, an increase of 50.1% year-on-year, and the total profit was 20.57 billion yuan, a year-on-year increase of 73.8%. For the coming months, Wu Bing, executive vice chairman of the China Machine Tool & Tooling Industry Association, believes that “the growth rate will slow down and return to a stable, fast and sustainable development track. It is expected that the growth rate of the whole industry can still be Hope to reach 20%."
Despite the occurrence of production and sales blowouts and high growth rates, Wu Bolin pointed out that many deep-seated problems still exist in the machine tool industry, and the structural contradictions are further manifested.
In the industry, the sales price of a single machine tool has increased for five or six years in a row, and the product structure has been optimized year after year. From January to August this year, although the production of machine tools reached 650,000 units, the average selling price of a single unit has decreased. In response to this phenomenon, Wu Berlin thinks: “In addition to the downward sales of some products, the main reason is that the proportion of high- and mid-range machine tools is decreasing, and the proportion of low-end machine tools is increasing. In-depth analysis shows that we also Did not jump out of the growth model of growth."
In terms of industrial structure, the “short board†contradiction between numerical control systems and functional components has become increasingly prominent. According to the data, imports from January to August this year increased by 30.3% and 61.4% year-on-year, respectively, and medium-to-high-end CNC machine tools still did not get rid of the situation where CNC systems and functional components depended on imports.
At the same time, the competitiveness of high-end CNC machine tools is still not strong. Data show that from January to August this year, the import of metal processing machine tools increased by 41.7% year-on-year, almost all of which are high and medium-range CNC machine tools.
The Hardness Tester is a hardness tester. Metal hardness measurements were first defined by Ray Ommel's definition of hardness, which means that the material resists the ability of a hard object to press into its surface. It is one of the important performance indicators of metal materials. The higher the hardness in general, the better the abrasion resistance.
Hardness test is the simplest and most convenient test method in mechanical performance test. In order to be able to replace certain mechanical properties tests with hardness tests, a more accurate conversion of hardness and strength is required in production.
1. Dietmar Leeb The Leeb hardness is based on the latest Leeb hardness test principle and is designed using state-of-the-art microprocessor technology.
2. Brinell Hardness (HB) Hardened steel balls of a certain size (typically 10 mm in diameter) are pressed onto the surface of the material at a given load (typically 3000 kg) and held for a period of time. After loading, the ratio of the load to its indentation area , which is the Brinell hardness value (HB) in kilograms force/mm2 (N/mm2).
3. Rockwell Hardness (HR) When HB>450 or the specimen is too small, the Brinell hardness test cannot be used instead. It uses a diamond cone with a vertex angle of 120° or a steel ball with a diameter of 1.59 and 3.18 mm to press the surface of the material under test under a certain load. The hardness of the material is obtained from the depth of the indentation. According to the hardness of the test material, divided into three different situations
HRA: It is the hardness obtained with a 60kg load and a diamond cone press. It is used for materials with extremely high hardness (such as cemented carbide, etc.).
HRB: Hardened steel balls with a load of 100kg and a diameter of 1.58mm are used to obtain a hardness that is used for materials with low hardness (such as annealed steel, cast iron, etc.).
HRC: It is the hardness obtained with a 150kg load and a diamond cone press. It is used for materials with high hardness (such as quenched steel, etc.).
4. Vickers hardness (HV) with a load of 120kg or less and a diamond square cone press with a vertex angle of 136° is pressed into the surface of the material. The load value is divided by the surface area of the material indentation pit, which is the Vickers hardness value. (HV).
5 Knoop Hardness (HK)
Suitable for hardness testing of high hardness materials (general hardness measurement above HV1000 hardness).
6. There are Shore hardness tester
7. Wechsler hardness tester (HW)
Suitable for the measurement of Vickers hardness value of aluminum alloy products.
8 plaster hardness tester
Applicable to the measurement of the hardness of building plaster, the steel ball is placed on the test piece, and the depth of the ball mark under the effect of the fixed load is measured, and the plaster hardness of the test piece is calculated.
The above hardness is only a few commonly used, in addition to Shore hardness, Shore hardness, Barcol hardness, Mohs hardness. Practice has shown that there is an approximate correlation between hardness values and strength values between various hardness values of metallic materials. Because the hardness value is determined by the resistance to initial plastic deformation and the resistance to continued plastic deformation, the higher the strength of the material, the higher the resistance to plastic deformation and the higher the hardness value.
Hardness Tester
Hardness Tester,Automatic Hardness Tester,Digital Hardness Tester,Vicker Hardness Tester
Dongguan Jaten Instrument Co.,LTD(HK TT:Jaten Technology Co.,Ltd ​) , http://www.jatentech.com