Tourist souvenir furnishing article

A technology for souvenirs and decorations, applied in the field of tourist souvenirs and decorations, to achieve the effects of easy control, stable process and low production cost

Inactive Publication Date: 2016-03-23
张颖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the prior art, there is almost no report on the decorative chrome plating of tourist s

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A tourist souvenir ornament. The substrate of the ornament is 2# zinc alloy, which is produced by die-casting process; the outer surface of the substrate is sequentially provided with cyanide-free pre-plated copper coating, acid copper plating layer, semi-bright nickel plating layer, electroplating high Sulfur nickel coating, electroplating bright nickel coating and electroplating chromium coating; the thicknesses of the above coatings are 3-5 μm, 1-2 μm, 0.5-1 μm, 2-3 μm, 1-2 μm, 6-8 μm; wherein, each coating consists of the following Steps to form:

[0027] (1) Cyanide-free pre-plating of copper: the composition of the plating solution is copper pyrophosphate 80g / L, sodium pyrophosphate 150g / L, trisodium citrate 200g / L, potassium sodium tartrate 40g / L, HEDP15g / L, ethylenediamine 180g / L; ammonium bifluoride 5g / L; sodium fluoride 3g / L, lithium fluoride 6g / L; ammonia water to adjust the pH value to 9.5, the electroplating process is cathode current density: initial curre...

Embodiment 2

[0034] A tourist souvenir ornament. The substrate of the ornament is 2# zinc alloy, which is produced by die-casting process; the outer surface of the substrate is sequentially provided with cyanide-free pre-plated copper coating, acid copper plating layer, semi-bright nickel plating layer, electroplating high Sulfur nickel coating, electroplating bright nickel coating and electroplating chromium coating; the thicknesses of the above coatings are 3-5 μm, 1-2 μm, 0.5-1 μm, 2-3 μm, 1-2 μm, 6-8 μm; wherein, each coating consists of the following Steps to form:

[0035] (1) Cyanide-free pre-plating of copper: the composition of the plating solution is copper pyrophosphate 90g / L, sodium pyrophosphate 140g / L, trisodium citrate 220g / L, potassium sodium tartrate 36g / L, HEDP17g / L, ethylenediamine 160g / L; ammonium bifluoride 8g / L; sodium fluoride 2g / L, lithium fluoride 8g / L; ammonia water to adjust the pH value to 8.5, the electroplating process is cathodic current density: initial curr...

Embodiment 3

[0042] A tourist souvenir ornament. The substrate of the ornament is 2# zinc alloy, which is produced by die-casting process; the outer surface of the substrate is sequentially provided with cyanide-free pre-plated copper coating, acid copper plating layer, semi-bright nickel plating layer, electroplating high Sulfur nickel coating, electroplating bright nickel coating and electroplating chromium coating; the thicknesses of the above coatings are 3-5 μm, 1-2 μm, 0.5-1 μm, 2-3 μm, 1-2 μm, 6-8 μm; wherein, each coating consists of the following Steps to form:

[0043] (1) Cyanide-free copper pre-plating: the bath composition is copper pyrophosphate 85g / L, pyrophosphoric acid 145g / L, trisodium citrate 210g / L, potassium sodium tartrate 38g / L, HEDP16g / L, ethylenediamine 170g / L; ammonium bifluoride 6g / L; sodium fluoride 2.5g / L, lithium fluoride 7g / L; ammonia water to adjust the pH value to 9, the electroplating process is cathodic current density: initial current density 5A / dm 2 , ...

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Abstract

The invention discloses a tourist souvenir furnishing article. The furnishing article is characterized in that a base material is produced by die-casting 2# zinc alloy, wherein a cyanide-free copper pre-plating layer, an acidic copper plating layer, a semi-bright nickel plating layer, a high sulfur nickel electroplating layer, a bright nickel electroplating layer and a chrome electroplating layer, which are correspondingly 3 to 5 microns, 1 to 2 microns, 0.5 to 1 microns, 2 to 3 microns, 1 to 2 microns, and 6 to 8 microns in thickness, are sequentially arranged on the outer surface of the base material.

Description

technical field [0001] The invention relates to the field of handicraft production, in particular to a tourist souvenir ornament. Background technique [0002] Zinc alloy has been widely used in the production of tourist souvenirs because of its cheap price, low melting point, and especially its good die-casting performance. Such as scenic modeling, commemorative ornaments, etc. [0003] However, the appearance of zinc alloy die castings is gray and white, and there are various defects on the surface, such as: slag inclusions, shrinkage cavities, etc. Therefore, without surface treatment, its usability and decoration are very poor. A common surface treatment method is electroplating. According to the different decorative and functional requirements, there are certain differences in the electroplating process. For example, there are gold-plated, silver-plated, chrome-plated, and gun-plated colors on the surface. However, regardless of the coating on the outside, the pre-p...

Claims

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Application Information

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IPC IPC(8): C25D3/38C25D3/12C25D3/06C25D5/14C25D5/16
CPCC25D3/38C25D3/06C25D3/12C25D5/14C25D5/16
Inventor 张颖
Owner 张颖
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