Plating solution for electroplating tungsten-cobalt-nickel alloy on surface of structural steel

A nickel alloy and structural steel technology, applied in the field of electroplating tungsten-cobalt-nickel alloy plating solution on the surface of structural steel, can solve the problems of increased wear, easy peeling, poor wear resistance, etc. , combined with good effect

Inactive Publication Date: 2014-12-24
无锡市锡山区鹅湖镇荡口青荡金属制品厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, nickel-based alloy coatings are not up to the requirements of hard chrome coatings in terms of wear resistance and hardness.
Nickel-based alloys are face-centered cubic lattices, and in the process of rubbing against the counterpart metal, they tend to be severely adhered to the counterpart metal, thereby aggravating wear and having poor wear resistance
At the same time, the hardness of the nickel-based alloy coating is not high. For nickel-tungsten alloys, when the tungsten content in the alloy coating exceeds 30%, the microhardness value is 400-600Hv, which must be subjected to high-temperature heat treatment (300-500°C

Method used

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Examples

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Effect test

Embodiment 1

[0013] A kind of electroplating tungsten-cobalt-nickel alloy plating solution on the surface of structural steel, the composition of this plating solution is: cobalt sulfate 12g / L, sodium tungstate 84g / L, nickel sulfate 14g / L, boric acid 38g / L, sodium sulfate 30g / L, Ammonium sulfate 24g / L, tartaric acid 30g / L, potassium pyrophosphate 15g / L, ascorbic acid 10g / L, formaldehyde 3ml / L, dimethylhexynol 2ml / L, and the balance is water.

Embodiment 2

[0015] A kind of electroplating tungsten-cobalt-nickel alloy plating solution on the surface of structural steel, the composition of this plating solution is: cobalt sulfate 18g / L, sodium tungstate 80g / L, nickel sulfate 18g / L, boric acid 34g / L, sodium sulfate 36g / L, Ammonium sulfate 20g / L, tartaric acid 34g / L, potassium pyrophosphate 11g / L, ascorbic acid 14g / L, formaldehyde 1ml / L, dimethylhexynol 4ml / L, and the balance is water.

Embodiment 3

[0017] A kind of electroplating tungsten-cobalt-nickel alloy plating solution on the surface of structural steel, the composition of this plating solution is: cobalt sulfate 16g / L, sodium tungstate 81g / L, nickel sulfate 17g / L, boric acid 35g / L, sodium sulfate 34g / L, Ammonium sulfate 21g / L, tartaric acid 33g / L, potassium pyrophosphate 12g / L, ascorbic acid 13g / L, formaldehyde 1.5ml / L, dimethylhexynol 3.5ml / L, and the balance is water.

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PUM

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Abstract

The invention discloses a plating solution for electroplating a tungsten-cobalt-nickel alloy on a surface of structural steel. The plating solution is composed of 12-18 g/L of cobalt sulfate, 80-84 g/L of sodium tungstate, 14-18 g/L of nickel sulfate, 34-38 g/L of boric acid, 30-36 g/L of sodium sulfate, 20-24 g/L of ammonium sulfate, 30-34 g/L of tartaric acid, 11-15 g/L of potassium pyrophosphate, 10-14 g/L of ascorbic acid, 1-3 ml/L of formaldehyde, 2-4 ml/L of dimethyl hexynol, and the balance being water.

Description

technical field [0001] The invention relates to the technical field of electroplating, in particular to a tungsten-cobalt-nickel alloy plating solution for electroplating the surface of structural steel. Background technique [0002] With the rapid development of modern automobile industry, machinery industry, aviation and aerospace industry, more and more high-load cylinder pistons and sliding parts are used under the action of dry friction, hydraulic pressure and lubricating oil medium. Electroplating high-hardness, high-temperature-resistant, corrosion-resistant and fatigue-resistant coating materials on the surface of sliding parts is an effective way to solve the problem of sintering and strain on the surface of parts due to temperature rise during friction, which can greatly improve the service life of equipment. , increasing the economic cost. [0003] Hard chrome plating has good hardness, wear resistance and corrosion resistance, and hard chrome plating on the surf...

Claims

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Application Information

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IPC IPC(8): C25D3/56
Inventor 钱永清
Owner 无锡市锡山区鹅湖镇荡口青荡金属制品厂
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