A method for cleaning the electric corrosion layer of magnetic steel materials

Abstract

The invention discloses a method for cleaning a surface-processed electro-corrosion layer of a magnetic steel material, relates to the field of special processing, and includes a solution formula for cleaning and a cleaning process. The cleaning solution includes a pre-cleaning solution LCX‑52 water-based cleaning agent, mainly The cleaning solution is 300-400 g / L of chromic anhydride, and the cleaning process is ultrasonic cleaning with LCX-52 water-based cleaning agent (ultrasonic frequency 28-32Khz, the same below)→ultrasonic cleaning with chromic acid solution→ultrasonic rinsing with pure water→drying. The present invention can quickly and efficiently remove the electro-corrosion layer produced by electrical processing of magnetic steel materials. In the previous cleaning method, it needs to be polished and wiped one by one after cleaning. After cleaning, there is residual electro-corrosion layer, and the cleaning efficiency is low. There is basically no need for repeated cleaning and rework, which can realize mass production of parts, and the cleaned products will not change color and rust.

Description

Technical field:

[0001] The invention belongs to cleaning technology and relates to a method for cleaning the surface of magnetic steel materials Background technique:

[0002] Magnets are components used in various products such as motors, torque converters, and accumulators, and their main components are a mixture of cobalt, nickel, and rare earths. Because the material is brittle, its processing and forming are mainly wire cutting or EDM, which will produce a thick black electro-corrosion layer on the parts, which will affect the firmness of subsequent bonding, and the existence of black electro-corrosion products on the product will also cause problems. Will affect the reliability of the product. Due to the complex composition and high porosity of the magnetic steel material itself, it is difficult to completely remove the galvanic corrosion layer attached to the surface. Moreover, the magnetic steel is small and brittle, and general mechanical cleaning such as sand bl...

Examples

Embodiment Construction

[0017] Below in conjunction with accompanying drawing, the present invention will be further described:

[0018] The main purpose of the present invention is to completely remove the black electro-corrosion layer produced by electrical processing of magnetic steel materials to meet the assembly requirements. The present invention selects suitable cleaning solutions and cleaning parameters to realize the complete removal of electro-corrosion products on the surface of parts. The process refers to figure 1 The specific process is as follows:

[0019] Step 1: LCX-52 water-based cleaning ultrasonic cleaning

[0020] Carefully store the magnets flat in the flat-bottomed plastic box, parts must not be stacked. Pour (10-30) g / L LCX-52 water-based cleaning solution into a flat-bottomed plastic box, clean it in 28-32KHz ultrasonic wave for 10 minutes, reverse the magnetic steel and clean it again, and rinse it with tap water after cleaning

[0021] Step 2: Ultrasonic cleaning with ch...

Technical field:

[0001] The invention belongs to cleaning technology and relates to a method for cleaning the surface of magnetic steel materials Background technique:

[0002] Magnets are components used in various products such as motors, torque converters, and accumulators, and their main components are a mixture of cobalt, nickel, and rare earths. Because the material is brittle, its processing and forming are mainly wire cutting or EDM, which will produce a thick black electro-corrosion layer on the parts, which will affect the firmness of subsequent bonding, and the existence of black electro-corrosion products on the product will also cause problems. Will affect the reliability of the product. Due to the complex composition and high porosity of the magnetic steel material itself, it is difficult to completely remove the galvanic corrosion layer attached to the surface. Moreover, the magnetic steel is small and brittle, and general mechanical cleaning such as sand bl...

Examples

Embodiment Construction

[0017] Below in conjunction with accompanying drawing, the present invention will be further described:

[0018] The main purpose of the present invention is to completely remove the black electro-corrosion layer produced by electrical processing of magnetic steel materials to meet the assembly requirements. The present invention selects suitable cleaning solutions and cleaning parameters to realize the complete removal of electro-corrosion products on the surface of parts. The process refers to figure 1 The specific process is as follows:

[0019] Step 1: LCX-52 water-based cleaning ultrasonic cleaning

[0020] Carefully store the magnets flat in the flat-bottomed plastic box, parts must not be stacked. Pour (10-30) g / L LCX-52 water-based cleaning solution into a flat-bottomed plastic box, clean it in 28-32KHz ultrasonic wave for 10 minutes, reverse the magnetic steel and clean it again, and rinse it with tap water after cleaning

[0021] Step 2: Ultrasonic cleaning with ch...

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