CN105779989A - Nd-Fe-B phosphatizing process - Google Patents

Abstract

The invention discloses an Nd-Fe-B phosphatizing process. The Nd-Fe-B phosphatizing process comprises the following steps: 1), the technological process comprises the steps of chamfer roll finishing, abrasive blasting, alkaline degreasing, cleaning, derusting, cleaning, surface adjusting, room temperature phosphatizing, water rinsing and passivating; 2), the technological requirements are as follows: (1), a rock grinder is adopted, and an Nd-Fe-B material and an abrasive material are placed into the rock grinder for grinding; (2), obvious rust on surfaces can be removed through abrasive blasting, so that high corrosion is avoided in subsequent procedures; (3), an alkalescent material is adopted for degreasing; an anionic surfactant is a main content; a degreasing effect can be reinforced through ultrasonic waves; (4), room temperature zinc-series phosphatizing is adopted for phosphatizing, and a phosphatizing solution mainly consists of nickel salt, zinc dihydrogen phosphate, molybdate, fluoride and a complexing agent; and (5), a solution containing hexavalent chromium is adopted for passivating, so that the corrosion resistance of a phosphatizing film is improved. The phosphatizing process is simple, and a very good phosphatizing effect can be obtained.

Description

A kind of neodymium iron boron phosphating process

Technical field

The present invention relates to a kind of neodymium iron boron phosphating process.

Background technology

Current neodymium iron boron phosphating process is complicated, it does not have unified standard, causes the neodymium iron boron quality after process uneven, and a lot of operations that repeat also make under production efficiency, increases the work burden of workman, makes the competitiveness of product in market not high simultaneously.Summary of the invention

Because the drawbacks described above of prior art, the technical problem to be solved is to provide a kind of neodymium iron boron phosphating process, and this phosphating process is simple, it is possible to obtain good phosphatization effect.

For achieving the above object, the invention provides a kind of neodymium iron boron phosphating process, it is characterised in that comprise the steps, 1) technological process: tumbling chamfering → sandblasting → electrochemical deoiling → cleaning → rust cleaning → cleaning → surface adjustment → normal temperature phosphating → washing → passivation；

2) technological requirement: (1) adopts oscillating mill that NdFeB material and abrasive material are inserted grinder and is ground；(2) sandblasting can remove the obvious rusty stain in surface, it is to avoid rear operation carries out deep-etching；(3) oil removing adopts alkalescence material, and anion surfactant is main component, and using ultrasonic strengthens deoiling effect；(4) phosphatization adopts normal-temperature zinc series phosphatization, and Phosphating Solution is mainly made up of nickel salt, zinc dihydrogen phosphate, molybdate, fluoride, chelating agent；(5) passivation adopts chromyl solution, to improve the corrosion resistance of phosphating coat.

The invention has the beneficial effects as follows: the phosphating process of the present invention is simple, it is possible to obtain good phosphatization effect.

Detailed description of the invention

Technical scheme disclosed by the invention is a kind of neodymium iron boron phosphating process, it is characterised in that comprise the steps, 1) technological process: tumbling chamfering → sandblasting → electrochemical deoiling → cleaning → rust cleaning → cleaning → surface adjustment → normal temperature phosphating → washing → passivation；

2) technological requirement: (1) adopts oscillating mill that NdFeB material and abrasive material are inserted grinder and is ground；(2) sandblasting can remove the obvious rusty stain in surface, it is to avoid rear operation carries out deep-etching；(3) oil removing adopts alkalescence material, and anion surfactant is main component, and using ultrasonic strengthens deoiling effect；(4) phosphatization adopts normal-temperature zinc series phosphatization, and Phosphating Solution is mainly made up of nickel salt, zinc dihydrogen phosphate, molybdate, fluoride, chelating agent；(5) passivation adopts chromyl solution, to improve the corrosion resistance of phosphating coat.

The phosphating process of the present invention is simple, it is possible to obtain good phosphatization effect, the neodymium iron boron better quality after phosphatization.

The preferred embodiment of the present invention described in detail above.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to the design of the present invention without creative work.Therefore, all technical staff in the art, all should in the protection domain being defined in the patent claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.

Claims (1)

1. a neodymium iron boron phosphating process, it is characterised in that comprise the steps, 1) technological process: tumbling chamfering → sandblasting → electrochemical deoiling → cleaning → rust cleaning → cleaning → surface adjustment → normal temperature phosphating → washing → passivation；

2) technological requirement: (1) adopts oscillating mill that NdFeB material and abrasive material are inserted grinder and is ground；(2) sandblasting can remove the obvious rusty stain in surface, it is to avoid rear operation carries out deep-etching；(3) oil removing adopts alkalescence material, and anion surfactant is main component, and using ultrasonic strengthens deoiling effect；(4) phosphatization adopts normal-temperature zinc series phosphatization, and Phosphating Solution is mainly made up of nickel salt, zinc dihydrogen phosphate, molybdate, fluoride, chelating agent；(5) passivation adopts chromyl solution, to improve the corrosion resistance of phosphating coat.