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High-brightness durionise additive and production method thereof

A technology of electroplating hard chromium and production methods, which is applied in the field of additives in the industry, can solve problems such as little help in brightness and unsatisfactory product quality, and achieve the effects of reducing grain boundary corrosion, excellent physical protection performance, and improving current efficiency

Inactive Publication Date: 2019-03-12
东莞市同欣新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the relevant additives currently on the market are mainly composed of organic acids or organic acid salts, which can improve the hardness of the chromium layer and the cathode efficiency to a certain extent, but do not help much in brightness, thus improving the quality of the product is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The production method of this high-brightness electroplating hard chrome additive is carried out according to the following steps,

[0015] 1) Ingredients: 50g of sodium benzsulfonate, 10g of sulfamic acid, 1g of boric acid, 600g of deionized water;

[0016] 2) Preparation process: put deionized water in a container, weigh and add sodium sulfonate, sulfamic acid and boric acid into the container in turn, stir for 5 minutes after adding all of them, then set the volume to the preset volume, and stir again fully Evenly, pack according to actual needs.

Embodiment 2

[0018] The production method of this high-brightness electroplating hard chrome additive is carried out according to the following steps,

[0019] 1) Ingredients: Sodium acetate and sodium sulfamate (ratio: 1:1) 100g, methanesulfonic acid and acetic acid (ratio: 2:1) 20g, sodium citrate 6g, glycerin 1g, deionized 600g of water;

[0020] 2) Preparation process: put deionized water in a container, weigh and add compound sodium acetate and sodium sulfamate, compound methanesulfonic acid and acetic acid, sodium citrate and wetting agent to the container in sequence, after adding all Stir for 5 minutes, then adjust the volume to the preset volume, stir well again, and pack according to actual needs.

Embodiment 3

[0022] The production method of this high-brightness electroplating hard chrome additive is carried out according to the following steps,

[0023] 1) Ingredients: sodium glycine 150g, methanesulfonic acid 50g, lactic acid 10g, ethylene glycol 5g, distilled water 600g;

[0024] 2) Preparation process: put deionized water in a container, weigh and add sodium glycine, methanesulfonic acid, lactic acid and wetting agent to the container in sequence, stir for 5 minutes after adding all of them, and then set the volume to the preset volume, Stir well again, and divide according to actual needs.

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Abstract

The invention discloses a high-brightness durionise additive and a production method thereof. The formula for producing each liter of additive is prepared from 50 to 200g of organic acid salt, 10 to 50g of organic acid, 1 to 10g of buffer agent, and 0 to 5g of wetting agent, wherein the organic acid salt comprises one or more compounds of sodium sulfonate, sodium acetate, sodium sulfamate, sodiumglycinate and sodium tannin; and the organic salt comprises one or more compounds of citric acid, methanesulfonic acid, acetic acid and sulfamic acid. According to the high-brightness durionise additive and the production method thereof provided by the invention, the high-brightness durionise additive prepared by adopting the organic acid salt, the organic salt, the buffer agent and the like as basic raw materials provided by the invention is simple in raw material formula and extensive in use; meanwhile, the deposition velocity is increased, so that the current efficiency can be effectively improved, and the electroplating time is greatly shortened; a cladding layer is low in microcracks and excellent in toughness, so that a chromium layer in a high current area can be effectively prevented from peeling; and the cladding layer is fine and smooth in crystals, the hardness can reach to be more than 1000HV, the cladding layer surface brightness is high, the porosity is low, the inner stress is small, and the occurrence of grain boundary corrosion can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of surface treatment, in particular to an additive in industries such as gravure printing and plate making and a production method thereof. Background technique [0002] In industries such as gravure printing and plate making, after electroplating, the copper layer is ground and polished before electronic engraving, and after engraving, it is treated with hard chrome plating. The hardness, brightness, and wear resistance of the chrome plating layer directly affect the printing effect and the service life of the plate roller. At present, the means to measure the performance of copper layer is mainly ultrasonic hardness method. Practice shows that the coating with chromium hardness of 750-850HV is the most ideal. [0003] At present, conventional gravure chromium plating is electroplating based on chromic anhydride, using sulfuric acid as a catalyst, the cathode efficiency is generally only 10-15%, the hardnes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D3/08C25D3/10
CPCC25D3/08C25D3/10
Inventor 陈志敏王庆浩樊雄郝贵龙
Owner 东莞市同欣新材料有限公司
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