Method for chroming stainless steel conductive roller

A conductive roller, stainless steel technology, applied in jewelry and other directions, can solve problems such as increased investment cost, and achieve the effects of short repair cycle, good wear resistance and long service life

Inactive Publication Date: 2011-04-20
本溪市通宝冶金设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Compared with the commonly used copper-plated steel conductive roller, the conductive roller made of stainless steel has better thermal conductivity, wear resistance, corrosion resistance and lubrication performance, but the investment cost increases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The chrome-plating method for stainless steel conductive rollers includes polishing, cleaning, degreasing and roughening the surface of the roller body by conventional operating methods, and then:

[0015] (1) peak cutting and deburring

[0016] Prepare the peak cutting and deburring solution at room temperature, take 770ml of water, add HNO in turn 3 135g, HCl65g, HF 30g, C 6 h 12 N 4 (Hexamethylenetetramine) 2g, stir evenly.

[0017] Take the φ600×12121Cr18Ni9Ti stainless steel conductive roller as an example, textured to Ra 3~5, after cleaning, brush the surface of the textured layer with a peak-shaving deburring solution, wipe the surface of the roller for 15-20 minutes, wash, and remove the roughness formed during texturing. The waste edge and debris are dissolved;

[0018] (2) 1Cr18Ni9Ti stainless steel conductive roller surface chrome plating

[0019] Preparation of chrome plating solution: CrO 3 (Chromic anhydride) 250g / L solution, with CrO 3 :H 2 SO ...

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PUM

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Abstract

The invention relates to a method for chroming a stainless steel conductive roller. The method comprises roller body surface polishing, oil removing, cleaning, roughing and peak clipping treatment and is characterized by comprising the following steps of: adding 135+/-10 grams of nitric acid (HNO3), 165+/-5 grams of hydrogen chloride (HCl), 30+/-3 grams of hydrogen fluoride (HF) and 2 grams of hexamethylene tetramine (C6H12N4) sequentially into 770 millimeters of water; stirring the mixture uniformly; preparing peak-clipping burr-removing liquid at normal temperature; scrubbing the surface of the roughened layer of the conductive roller for 15 to 20 minutes by using the peak-clipping burr-removing liquid; preparing chroming liquid in a ratio of chromic anhydride (CrO3) to sulfuric acid (H2SO4) of 100 to 1.15; and after washing the stainless steel conductive roller cleanly, placing the cleaned stainless steel conductive roller into a horizontally chroming tank to power on and perform electroplating. The method has the advantages of: by a peak-clipping burr-removing liquid corrosion method, the problem that waste edges and scraps after the roughing process are difficult to remove due to high toughness of stainless steel is solved and the chromed stainless steel conductive roller does not scratch the surface of a steel plate due to the burr; a chroming layer is bonded with a matrix firmly by the electroplating process, so the chroming layer does not fall off and has high wear resistance; the stainless steel conductive roller has a long service life, a short repair cycle of only 2 to 3 days and cost of one fifth of that of a copperized conductive roller.

Description

technical field [0001] The invention belongs to the technical field of conductive roller production in cold-rolled sheet electroplating production lines, and relates to a chrome-plating method for a conductive roller, in particular to a chrome-plating method for a stainless steel conductive roller. Background technique [0002] The electrolyte used in the tinning of cold-rolled sheets is acidic and corrosive. The corrosion resistance of the commonly used steel-body copper-plated conductive roll is slightly poor. When the chromium layer is deformed by stress, the copper and the substrate are corroded, and the chromium layer peels off. It cannot meet the production requirements. In order to improve the corrosion resistance of the conductive roller, the material of the conductive roller body is 1Cr 18 Ni 9 Made of Ti stainless steel, the surface of the roller body is plated with chromium layer of 80±20μm to improve thermal conductivity, wear resistance, corrosion resistance an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D5/00C25D5/36C25D5/18C25D3/04C25D7/00
Inventor 黄岳
Owner 本溪市通宝冶金设备制造有限公司
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