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A kind of magnesium alloy cleaning agent

A technology of magnesium alloy and cleaning agent, applied in the field of magnesium alloy cleaning agent, can solve problems such as environmental pollution and magnesium alloy over-corrosion, and achieve the effects of accelerating cleaning speed, prolonging service life and improving work efficiency

Active Publication Date: 2018-04-06
NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the pretreatment agents for magnesium alloys are chromate, fluoride, and strong acids. In addition to causing serious pollution to the environment, strong acids can easily lead to over-corrosion of magnesium alloys.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A cleaning agent for magnesium alloy, which is composed of the following components: 70g / L sodium hydroxide, 20g / L sodium phosphate, 2g / L sodium citrate, 2g / L sodium dodecylbenzenesulfonate, and 2g / L alkylphenol Polyoxyethylene ether 3g / L.

[0018] Soak the magnesium alloy workpiece to be cleaned in a magnesium alloy cleaning agent at 50°C for 15 minutes, rinse the soaked magnesium alloy workpiece with clean water, and the magnesium alloy is bright and clean after cleaning.

Embodiment 2

[0020] A magnesium alloy cleaning agent, consisting of the following components at the following concentrations: 120g / L sodium hydroxide, 5g / L sodium silicate, 1g / L disodium edetate, and 0.4g sodium dodecylbenzenesulfonate / L, sodium fatty alcohol polyoxyethylene ether sulfate 0.6g / L.

[0021] Soak the magnesium alloy workpiece to be cleaned in a magnesium alloy cleaning agent at 80°C for 10 minutes, rinse the soaked magnesium alloy workpiece with clean water, and the magnesium alloy is bright and clean after cleaning.

Embodiment 3

[0023] A magnesium alloy cleaning agent is composed of components with the following concentrations: potassium hydroxide 50g / L, sodium pyrophosphate 50g / L, sodium tartrate 1g / L, sodium dodecylbenzenesulfonate 5g / L.

[0024] Soak the magnesium alloy workpiece to be cleaned in a magnesium alloy cleaning agent at 80°C for 30 minutes, rinse the soaked magnesium alloy workpiece with clean water, and the magnesium alloy is bright and clean after cleaning.

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PUM

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Abstract

The invention discloses a magnesium alloy cleaning agent. The magnesium alloy cleaning agent comprises, by concentration, 50-120 g / L of alkali, 5-50 g / L of additive, 1-5 g / L of complexing agent, 1-5 g / L of wetting agent and the balance water. Strong acid, chromate and fluoride are omitted in the components of the magnesium alloy cleaning agent, pollution to the environment can be avoided, over etching to magnesium alloy also can be avoided, and the magnesium alloy cannot be damaged on the basis that the magnesium alloy is cleaned up thoroughly. The additive in the magnesium alloy cleaning agent can increase the cleaning speed of oil stains and a lubricating agent, the complexing agent enables ions such as calcium, magnesium and silicon in the cleaning agent to be kept stable, floccule can be avoided, and the service life of the cleaning agent is prolonged.

Description

technical field [0001] The invention belongs to the technical field of magnesium alloy surface treatment, and in particular relates to a magnesium alloy cleaning agent. Background technique [0002] Magnesium alloy is currently the lightest metal material used and is an important non-ferrous metal material. It has a series of advantages such as low density, high specific strength and specific stiffness, strong shock absorption, electromagnetic shielding and radiation resistance, easy cutting, processing and recycling, and is known as "21st century green engineering material". Magnesium alloy die castings are widely used in automobile manufacturing, aerospace, communications, optical instruments and computer manufacturing. [0003] Since the magnesium alloy is easily corroded, it is necessary to coat the surface of the magnesium alloy with a protective layer with high corrosion resistance. Magnesium alloy workpieces should be pretreated before magnesium alloy surface protec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23G1/22
Inventor 王修春潘喜庆张晶伊希斌王小军
Owner NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI