Inter-temperature pressing system and method for adhering magnet

Abstract

The invention discloses an inter-temperature pressing system and a method for adhering a magnet. The inter-temperature pressing system comprises a water tank (2) and a control unit (3), wherein a temperature sensor (4) and an electric heater (5) are arranged in the water tank (2); the control unit (3) comprises a controller, a heating control circuit and a temperature sensing signal processing circuit; a hot water inlet (6) is connected to the water tank (2) through a hot water pipe (7); a hot water pump (9) is arranged on the hot water pipe (7); and a reflowing outlet (10) is connected to the water tank (2) through a reflowing pipe (11) in a reflowing way. According to the inter-temperature pressing system for adhering the magnet, a heated medium circularly flows into a die chamber, so that temperature of the die chamber can reach a set softening point temperature of an adhesion agent, thus, the adhesion agent can be softened, which is equivalent to be used as a lubricant for reducing a friction resistance, therefore, magnetic powder can be more tightly combined, a combination clearance is smaller, and the magnet with higher density can be obtained; on the basis of the same prescription, cost of magnet pressing is lower, and a performance is higher; due to adoption of a self-lubricating function of the adhesion agent, so that service life of a die can be prolonged.

Description

technical field [0001] The invention relates to an inter-temperature pressing system and method for bonding magnets. Background technique [0002] With the development of science and technology, the application range of NdFeB magnets is becoming wider and wider, and the requirements for the pressing density of NdFeB magnets are also getting higher and higher. NdFeB magnets are made of soft magnetic alloy powder mixed with insulating agents and adhesives. Obtained by pressing after uniformity. The current magnet pressing technology is carried out at room temperature. Under normal temperature conditions, it is difficult to press a ring-shaped magnet with a thinner wall thickness and higher height to achieve an ideal density. This problem can be overcome by using high-pressure pressing. However, during high-pressure pressing, on the one hand, the mold is easily strained, which reduces the service life of the mold; on the other hand, the mold is prone to bursting, which directl...

AI Technical Summary

Problems solved by technology

The current magnet pressing technology is carried out at room temperature. Under normal temperature conditions, it is difficult to press a ring-shaped magnet with a thinner wall thickness and higher height to achieve an ideal density. This problem can be overcome by using high-pressure pressing. However, during high-pressure pressing, on the one hand, the mold is easily strained, which reduces the service life of the mold; on the other hand, the mold is prone to bursting, which directly affects production safety

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