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Phosphating technology of neodymium iron boron product

A technology of NdFeB products, which is applied in the phosphating process of NdFeB products, can solve the problems of easy oxidation and phosphating technology can not meet the quality requirements of phosphating film, and achieve the effect of improving the qualified rate of products

Active Publication Date: 2016-04-20
SINO MAGNETICS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] NdFeB products are characterized by easy oxidation and powder on the surface, but the existing phosphating technology cannot meet the quality requirements of phosphating film

Method used

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  • Phosphating technology of neodymium iron boron product

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Embodiment Construction

[0012] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0013] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.

[0014] like figure 1 As shown, the specific steps of the phosphating process of this NdFeB product include:

[0015] First of all, NdFeB products are chamfered, polished, pickled, and pickled in ultrasonic waves for the first phosphating;

[0016] NdFeB products are chamfered, polished and pickled to remove the scale on the surface of NdFeB products. The composition of the phosphating solution used in the first phosphati...

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Abstract

The invention discloses a phosphating technology of a neodymium iron boron product. The phosphating technology comprises the following steps that firstly, after being subjected to chamfer polishing, pickling and pickling in ultrasonic waves, the neodymium iron boron product is subjected to primary phosphating; then, the neodymium iron boron product after the primary phosphating is subjected to water washing and is dipped with absolute alcohol, and the dipped neodymium iron boron product is dried and wiped dry, and is subjected to ultrasonic cleaning; finally, secondary phosphating is carried out, the neodymium iron boron product after the secondary phosphating is subjected to the water washing and is dipped with absolute alcohol, the dipped neodymium iron boron product is dried, wiped dry, and then baked, wherein a phosphating solution adopted in the primary phosphating comprises the components: H2SO4, H3PO4 and Na2SO4, and a phosphating solution adopted in the secondary phosphating comprises the components: Zn(H2PO4)2, Mn(H2PO4)2 and NaNo2. The phosphating technology uses two different phosphating solutions, so that the problems that the appearance of the phosphated product is not consistent and powder exists on the surface of the phosphated product are solved; the problem that magnetic steel aging is affected due to an improper phosphating method is solved; in addition, the phosphating technology can conceal product surface defects; and the product yield is increased.

Description

technical field [0001] The invention relates to the field of NdFeB protection technology, in particular to a phosphating process for NdFeB products. Background technique [0002] The quality requirements of the phosphating film of NdFeB phosphating: consistent color, smooth surface, no powder, and the phosphating process will not affect the aging performance of the product. [0003] NdFeB products are characterized by easy oxidation and powder on the surface, but the existing phosphating technology cannot meet the quality requirements of phosphating film. [0004] The information disclosed in this Background section is only for enhancing the understanding of the general background of the present invention and should not be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. Contents of the invention [0005] The object of the present invention is to provide a kind of phospha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C22/73C23C22/08C23C22/07
CPCC23C22/07C23C22/08C23C22/73
Inventor 邵江龙
Owner SINO MAGNETICS TECH
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