The future of the pump industry is promising

The pump industry is a typical investment-driven industry. Market demand is greatly influenced by the country’s macroeconomic policies, especially the macroeconomic policies of the water conservancy, construction, and energy industries.

During the Eleventh Five-Year Period, the scale of investment in China's water conservancy projects was 462.8 billion yuan, of which, the investment proportion of key water conservancy projects exceeded 50. Moreover, since 2004, the average annual growth rate of the pump industry has remained at around 20.

In the development of the domestic foundry industry, pump and valve casting companies should solve problems such as energy-saving electricity, shortage of employment, and national policies. At the same time, they should pay more attention to the development of the industry and make appropriate adjustments according to the operating conditions of the company in order to make the future better. Fast development.

With the continuous advancement of technology, pump products will certainly develop in the direction of intelligence, can monitor parameters such as pressure, flow, temperature and vibration; can evaluate the shaft, bearing and sealing condition of the pump; and can explain the cause of the failure. For diagnosis, etc. The technical development of the magnetic pump and diaphragm pump industry will be concentrated in designing electronic regulating systems, improving drive devices and seeking new materials.

Prospective Industry Research Institute data shows that in the investment of sewage treatment equipment, pumps account for about 15 percent of the total investment in mechanical equipment. According to the pro-rata calculation, during the 12th Five-Year Plan period, the demand for pump products in urban sewage treatment will be around 60 billion yuan. There will be nearly 40 billion market demands in the next three years and the market prospects are good. In the near future, China's pump and valve backbone enterprises will surely be able to catch up with and surpass foreign companies of the same type, contribute to the nationalization of major national technological equipment, occupy a certain share in the world's pump market competition, and become the world's pump valve manufacturing industry. Strong country.

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

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