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Processing technology of gold jewelries

A processing technology and jewelry technology, applied in clothing, gold compounds, inorganic chemistry and other directions, can solve the problems of unstable gold plating with gold sodium sulfite, highly toxic cyanide environmental hazards, and low cost, and achieve improved hardness and corrosion resistance. Ability, product toughness, and the effect of improving hardness

Inactive Publication Date: 2019-12-24
深圳市金久缘珠宝有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the cost of the gold potassium cyanide process is low and the efficiency is high, the highly toxic problem of cyanide has irreversible harm to the environment. Electroplated gold is not stable

Method used

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  • Processing technology of gold jewelries

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-3

[0046] In the preparation examples 1-3, the sodium saccharin was selected from the model GXJM-1 sodium saccharin sold by Guangxi Jinmai Import and Export Co., Ltd., and the glucose was selected from the glucose model RG-0040 sold by Suzhou Pinnuo Chemical Co., Ltd.

preparation example 1

[0047] Preparation Example 1: Use 1.5kg of distilled water at 70°C as a solvent for sodium saccharin, heat 0.5kg of deionized water to 50°C, add 0.1kg of glucose while stirring, add sodium saccharin dissolved in distilled water in advance, stir vigorously, and add 0.4kg of sulfuric acid Cobalt and 0.2kg of nickel sulfate, add 0.5kg of distilled water, then add 0.08kg of 1,3-propanediamine hydrazinodithioformamide, and stir evenly to prepare brightener.

preparation example 2

[0048] Preparation example 2: Use 1.6kg of distilled water at 75°C as a solvent for sodium saccharin, heat 0.7kg of deionized water to 55°C, add 0.2kg of glucose while stirring, add sodium saccharin dissolved in distilled water in advance, stir vigorously, and add 0.7kg of sulfuric acid Cobalt and 0.3kg of nickel sulfate, add 0.8kg of distilled water, then add 0.1kg of 1,3-propanediamine hydrazine dithioformamide, and stir evenly to prepare brightener.

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Abstract

The invention discloses a processing technology of gold jewelries, and relates to the technical field of jewelry processing. The processing technology of the gold jewelries comprises the following steps of S1, sheeting; S2, melting; S3, removing nitrate; S4, exhausting air; S5, washing chlorine; S6, preparing sodium gold sulfide; S7, regulating pH; S8, regulating stability; S9, blanking and pouring mold; S10, electroplating: during electroplating, selecting a ruthenium iridium titanium mesh as the anode, wherein electroplate liquid comprises the following components by mass concentration: 20-50g / L of electroforming liquid prepared in the step S8, 25-45g / L of a plating bath agent, 40-100g / L of a complexing agent, 20-70g / L of a hardening agent and 30-50g / L of a brightening agent; and S11, demoulding. The processing technology of the gold jewelries adopts a cyanide free production technology, and the product has good toughness, is not easy to break, and has light weight and high hardness.The technology is advanced, so the processed gold jewelries have the advantages of high hardness, good wear resistance, high gloss and long-lasting gloss.

Description

technical field [0001] The invention relates to the technical field of jewelry processing, more specifically, it relates to a processing technology of gold jewelry. Background technique [0002] With the continuous improvement of people's living standards, people wear jewelry more and more, and its purpose is not only to preserve value, but to be more inclined to decoration, which makes the jewelry market change from a single use of precious metals such as diamonds and gold to satisfy users. The requirement for value preservation has changed to the use of cheaper alloys with multiple varieties and styles, which can better meet the needs of users for updating and seeking differences. [0003] When people wear gold jewelry, gold will absorb toxins from human skin or interact with sweat on the skin to turn black and yellow. At the same time, gold will also react with mercury in cosmetics and sulfur in the air to turn black. When gold and platinum rub against each other, the su...

Claims

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Application Information

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IPC IPC(8): C25D1/00C25D3/48C25D3/38C01G7/00C25D1/20A44C27/00
CPCA44C27/00C01G7/006C25D1/00C25D1/20C25D3/38C25D3/48
Inventor 高峰马占军张宁宁
Owner 深圳市金久缘珠宝有限公司
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