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According to statistics, around 1880, general-purpose centrifugal pumps accounted for more than 90% of the total output. Pumps for special purposes such as power plant pumps, chemical pumps, and mine pumps accounted for only about 10% of the total pump output. By 1960, general-purpose pumps accounted for only 45Y002Ea, while special-purpose pumps already accounted for 55% o2Ea.
Such as Germany's Rhine Brown coal mine, the use of more than 2,500 various submersible sewage pumps, the highest capacity of 1600kW, head 410m. China's submersible sewage pump was developed in the 1960s, in which the homework submersible electric pump was already used for irrigation of farmland in the south, and small and medium-capacity submersible pumps have formed a series and were put into production in batches. Large-capacity, high-voltage submersible pumps and submersible power solutions are also available. Large submersible pumps ranging from 500 to 1,200 kw have been put into operation in the mine.
The machines used to pump liquids, transport liquids, and increase the pressure of liquids are commonly referred to as pumps. From an energy point of view, a pump is a machine that converts energy. It converts the mechanical energy of the original idea into the energy of the liquid being transported, which increases the flow rate and pressure of the liquid. Pumps are generally used to pump liquids from low-lying areas and transport them along pipes to higher ground areas. For example, we commonly use the pump to pump water from rivers and ponds to the farmland, and pump water from underground deep wells to the water tower. Because the pressure of the liquid can be improved via the pump, the action of the pump can also be used to pump the liquid out of the lower pressure container and overcome the resistance along the way to the higher pressure container or other desired place, such as The boiler feed pump pumps water from the low-pressure tank to the feed water in the boiler drum with higher pressure. The pump's function range is very wide, and the huge pump flow can reach several hundred thousand in/h or more; while the mini pump flow rate is below dozens of mL/h. Its pressure can be up to 100000 MPa from normal pressure. The temperature of the liquid it transports can be as low as -200°C and as high as 800°C. The type of pumping liquid is very good. It can deliver water (clean water, sewage, etc.), oil, acid and alkali solution, emulsion, suspension and liquid metal.
AlNiCo material is comprised of aluminum,nickel,cobalt and iron with varying additions of other elements. There are two different manufacturing processes for AlNiCo:Cast and sintered. Cast AlNiCo can be made into many sizes and shapes,whereas Sintered AlNiCo is usually restricted to smaller sizes. However,both processes lead themselves to complex geometries and configurations. Standard Sintered AlNiCo has tighter dimensional tolerances due to its processing. It also has slighty lower magnetic properties,but better mechanical strength than Cast AlNiCo products. They are most suitable for small sizes that are less than 1 oz. It also results in parts that are structurally stronger than the cast alnico magnets. With the sintering process, one can achieve relatively close tolerances without any grinding.
Production: costing and powder metallurgy
Constitution: Al-Ni-Fe-Co
Performance: well performance in temperature stability
Processing: various sizes and shapes.
Application: Applied in instruments and other like fields..
The name of Alnico magnets comes from its main compositions-Al, Ni, Co. They are made through casting and sintered. They are inexpensive and have wide temperature stability. Thus, compared to other permanent magnet materials, they have such obvious advantages as bellow:
1. solid and breakable
AiNiCo magnets
In the 1930s, early permanent AlNiCo magnets came into being and predominated over the permanent magnetic material due to its excellent properties. Alnico Magnet is a kind of alloy formed by Al, Ni, Co and other trace elements. Its function and magnetic performance vary because of different compositions of metals. There are two kinds of production, costing and sintered. Through costing, magnets can be manufactured into various sizes and shapes. But sintered is suitable for making small size of magnets. The dimensional tolerance of blanks by sintered is better and more workable than that by costing, but the magnetic properties are slightly lower than costing products. Among the magnetic materials, AlNiCo magnets have the lowest reversible temperature coefficient, and its working temperature is up to 600 ℃. AlNiCo magnets are commonly applied in all kinds of instrumentations and other fields.
Advantages:
1. High Frequency Induction Melting Technology. Our raw materials are in accordance with the standards of International Environmental Protection Organization (IEPO) and ROHS
2. A high standard of gold finishing techniques. The minimum tolerance can be ±0.01mm.
3. Thermal control of the directional columnar crystal ingot Technology.
4. Automatic Heating Equipment to make sure consistency of magnet properties.
5. Laboratory of Physics and Chemistry for studying the relation between AlNiCo properties and its constitution and developing new kind of magnets by using new achievements in scientific research.
Process flow sheet
sintered AlNiCo
Raw materials → ingredients → magnetic powdering → pressing →sintered → heating → magnets test → → products test → packing
Costing AlNiCo
Raw materials → ingredients → melting → costing → heating → magnets test → → products test → packing
AlNiCo Magnet, AlNiCo Magnets, Alnico Bar Magnets, Alnico Ring Magnets, Alnico v Magnets
Ningbo Besten Magnet Co., Ltd. , https://www.bestenmagnets.com