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Magnetic bar

2020-09-02 17:04

Magnetic rods are mainly used to filter all kinds of fine powders and liquids, iron-containing impurities in semi-liquid and other materials with magnetic properties, and are widely used in chemical, food, waste recycling, carbon black and other fields.

1.concept

The magnetic bar is composed of an inner magnetic core and an outer cladding. The magnetic core includes a cylindrical magnet block and a conductive magnet piece. A good magnetic rod should have a uniform distribution of magnetic induction lines, and the maximum magnetic induction intensity point distribution should fill the entire magnetic rod as much as possible, because it is generally placed in a moving product transmission line. The surface of the magnetic rod should be smooth and have low resistance. Environmentally harmful substances, avoid pollutants and the environment.

The working environment of the magnet bar determines that it must have certain corrosion resistance and high temperature resistance characteristics, and some occasions require relatively strong magnetic induction. Different magnetic flux density can be obtained by using magnetic conductive sheets of different thickness. Choosing different magnets can determine the maximum magnetic flux density and temperature resistance of the magnet bar. Generally, to achieve a surface magnetic flux density of more than 12000 Gauss on a conventional 1-inch diameter magnet bar, a N40 or higher model neodymium iron boron magnet is required. Samarium-cobalt magnets are generally selected for high-temperature resistant magnets when the temperature exceeds 150 degrees. However, samarium cobalt is not the choice for large-diameter magnets. After all, the price of samarium-cobalt is very high. The price of a 50*500 magnet can reach tens of thousands of RMB.

The surface magnetic induction intensity of the magnetic rod is proportional to the smallest particle size that can be adsorbed. Small iron impurities can also have a great impact in the fields of batteries, pharmaceuticals and other fields. Therefore, a magnetic rod of about 12,000 Gauss should be used. Other areas can choose lower.

In the process of using the magnetic bar in contact with fluid, there will be some irreversible loss of internal magnetic energy. The loss exceeds 30% of the initial strength or the iron covered on the surface. When the stainless steel pipe is worn and broken, the magnetic bar needs to be replaced at this time, so that it cannot leak out. The magnetic bar of the magnet continues to work. The magnet is generally brittle, and the surface is also coated with some oil, which will pollute the environment. Generally, domestic magnetic bar manufacturers can work for 1-2 years under heavy load and 7-8 years under light load.

 

Magnetic bar

 

2. Specifications

Magnetic rod specifications (19, 22, 25, 28, 32, 38.....) The products are refined through 5 processes. Mainly used for iron pins in raw materials; the actual surface magnetic field can reach about 6000-11000 Gauss, and it can also be customized according to the specific requirements of customers. Because of the use of ultra-high coercivity magnet, it is sealed with silica gel or argon arc welding, and is made by special scientific technology.

 

3.Features

The characteristics of the super magnetic rod are: the poles of effective iron removal are dense, the contact area is large, and the magnetic force is super strong. The iron removal container can be customized and processed according to user requirements.

The magnetic bars are all equipped with stainless steel protective sleeves, which can effectively protect the magnetic bars from damage. Discharging iron is convenient and quick; pull the magnetic rod, and the ferromagnetic material adsorbed on the magnetic rod will automatically separate and fall. Continuous work; raw materials can continue to work when the iron is drawn out layer by layer, without the need to pause feeding.

 

4.Application

is mainly used in plastics, food, environmental protection, filtration, chemical, electric power, building materials, ceramics, medicine, powder, mining, coal and other industries.

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