阅读说明：本技术 一种抗氧化耐磨贵金属首饰的制备工艺 (Preparation process of antioxidant wear-resistant precious metal jewelry ) 是由 方齐晖 郭建对 于 2019-10-15 设计创作，主要内容包括：本发明涉及首饰制备技术领域,具体涉及一种抗氧化耐磨贵金属首饰的制备工艺,其包括步骤一、原料混合,将用于制备金属胚料的原料进行混合,然后加热搅拌使原料熔融并混合均匀,得混合料；步骤二、原料加工,将混合料制备成胚料,然后通过回火炉对胚料进行回火处理；步骤三、胚料加工,将经步骤二处理后的胚料的形状进行加工修整成要求的形状,然后将胚料表面抛光至镜面后进行超声波清洗,得首饰工件；步骤四、首饰工件表面效果处理,对经步骤三制得的首饰工件采用电解粉通电,然后对首饰工件进行清洗；步骤五、采用蒸镀溅射方法在首饰工件表面依次镀上铬层、硅层和氟化镁层,制得的首饰品表面不容易被氧化和刮花,抗污能力更好,防水性能增强。(The invention relates to the technical field of jewelry preparation, in particular to a preparation process of an antioxidant wear-resistant precious metal jewelry, which comprises the following steps of mixing raw materials, namely mixing the raw materials for preparing a metal blank, heating and stirring to melt the raw materials and uniformly mixing to obtain a mixture; step two, processing raw materials, namely preparing the mixture into a blank, and then tempering the blank through a tempering furnace; step three, blank processing, namely processing and trimming the shape of the blank processed in the step two into a required shape, polishing the surface of the blank to a mirror surface, and then carrying out ultrasonic cleaning to obtain a jewelry workpiece; step four, surface effect treatment is carried out on the jewelry workpiece, the jewelry workpiece prepared in the step three is electrified by adopting electrolytic powder, and then the jewelry workpiece is cleaned; and step five, sequentially plating a chromium layer, a silicon layer and a magnesium fluoride layer on the surface of the jewelry workpiece by adopting an evaporation sputtering method, so that the surface of the prepared jewelry is not easily oxidized and scratched, the anti-fouling capability is better, and the waterproof performance is enhanced.)

1. A preparation process of an antioxidant wear-resistant noble metal jewelry is characterized by comprising the following steps: the preparation method comprises the following preparation steps:

step one, mixing raw materials, namely mixing the raw materials for preparing the metal blank, heating and stirring the mixture to melt the raw materials and uniformly mixing the raw materials to obtain a mixture;

processing raw materials, namely preparing the mixture into a blank by adopting die oil pressure or a casting mode, and then tempering the blank by a tempering furnace;

step three, blank processing, namely grinding and finishing the shape of the blank processed in the step two into a required shape, polishing the surface of the blank to a mirror surface, and then carrying out ultrasonic cleaning to obtain a jewelry workpiece;

step four, performing surface effect treatment on the jewelry workpiece, namely electrifying the jewelry workpiece prepared in the step three by adopting electrolytic powder to remove oil stains and residues on the surface of the jewelry workpiece, and then cleaning the jewelry workpiece;

and fifthly, plating a chromium layer, a silicon layer and a magnesium fluoride layer on the surface of the jewelry workpiece in sequence by adopting a vapor deposition sputtering method to prepare the antioxidant wear-resistant noble metal jewelry.

2. The preparation process of the oxidation-resistant wear-resistant precious metal jewelry as claimed in claim 1, wherein: the evaporation sputtering method comprises the following steps:

a. cleaning and removing static electricity on the surface of the jewelry workpiece in the step four;

b. fixing the magnesium fluoride pendant on an electrified clamp in an evaporation sputtering chamber of an evaporation machine, then hanging the jewelry workpiece treated by the step a on the magnesium fluoride pendant, finally closing an evaporation machine door, and vacuumizing the evaporation sputtering chamber;

c. argon is filled into the evaporation sputtering chamber, then the chromium metal magnetron sputtering target is electrified and is irradiated by lamplight, so that the chromium metal magnetron sputtering target generates chromium ions to deposit and attach to the surface of a jewelry workpiece to form a chromium layer;

d. electrifying the silicon alloy magnetron sputtering target, and irradiating by using lamplight to ensure that the silicon alloy magnetron sputtering target generates silicon ions to deposit and attach on the chromium layer of the jewelry workpiece to form a silicon layer;

e. electrifying and heating the magnesium fluoride metal to enable the magnesium fluoride metal to generate magnesium fluoride ions to deposit and attach to the silicon layer of the jewelry workpiece to form a magnesium fluoride layer;

f. releasing the vacuum in the evaporation sputtering chamber, and taking out the product to obtain the antioxidant wear-resistant noble metal jewelry.

3. The preparation process of the oxidation-resistant wear-resistant precious metal jewelry as claimed in claim 2, wherein: in the step c, the electrifying current is 4-6A, the temperature of the sputtering treatment is 260-400 ℃, and the time of the sputtering treatment is 5-20 min.

4. The preparation process of the oxidation-resistant wear-resistant precious metal jewelry as claimed in claim 2, wherein: in the step d, the electrifying current is 1-2A, the temperature of the sputtering treatment is 100-200 ℃, and the time of the sputtering treatment is 5-20 min.

5. The preparation process of the oxidation-resistant wear-resistant precious metal jewelry as claimed in claim 2, wherein: in the step e, the electrifying current is 3-4A, the temperature of the sputtering treatment is 100-200 ℃, and the time of the sputtering treatment is 2-5 min.

6. The preparation process of the oxidation-resistant wear-resistant precious metal jewelry as claimed in claim 1, wherein: the heating in the first step is carried out to 1000-1200 ℃.

7. The preparation process of the oxidation-resistant wear-resistant precious metal jewelry as claimed in claim 1, wherein: in the second step, the furnace temperature of the tempering furnace is 280-320 ℃ during tempering treatment, and the tempering treatment time is 80-100 min.

8. The preparation process of the oxidation-resistant wear-resistant precious metal jewelry as claimed in claim 1, wherein: in the third step, the polishing speed is 2700-.

Technical Field

The invention relates to the technical field of jewelry preparation, in particular to a preparation process of an antioxidant wear-resistant noble metal jewelry.

Background

The commonly used noble metals are gold, silver, platinum, palladium and alloys thereof, etc., which are used for manufacturing ornaments and industrial parts. The noble metal is generally processed and prepared by methods such as manual forging, precision casting, pressure processing, machining, electroforming, welding and the like. The jewelry made of the noble metal is generally expensive, the jewelry is easily influenced by external environment and is oxidized and discolored due to interaction with skin sweat on a human body when people wear the noble metal jewelry for a long time, and the surface of the noble metal jewelry is easily scratched in the wearing process due to the soft texture and poor surface wear resistance of the noble metal jewelry, so that the attractiveness of the jewelry is influenced, and the quality of the jewelry is slowly reduced.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a preparation process of an antioxidant wear-resistant noble metal jewelry, the surface of the prepared jewelry is not easy to be oxidized and scraped, the wear resistance is higher, the anti-fouling capability is better, and the waterproof performance is enhanced. The technology is suitable for applications of 24K, 22K, 18K, 14K, 10K, 9K, 7K, silver, steel, copper and the like.

The purpose of the invention is realized by the following technical scheme:

a preparation process of an antioxidant wear-resistant precious metal jewelry comprises the following preparation steps:

step one, mixing raw materials, namely mixing the raw materials for preparing the metal blank, heating and stirring the mixture to melt the raw materials and uniformly mixing the raw materials to obtain a mixture;

processing raw materials, namely preparing the mixture into a blank by adopting die oil pressure or a casting mode, and then tempering the blank by a tempering furnace;

step three, blank processing, namely processing and trimming the shape of the blank processed in the step two into a required shape, polishing the surface of the blank to a mirror surface, and then carrying out ultrasonic cleaning to obtain a jewelry workpiece; specifically, the jewelry workpiece can be workpieces of 24K, 22K, 18K, 14K, 10K, 9K, 7K, silver, steel, copper and the like.

Step four, performing surface effect treatment on the jewelry workpiece, namely electrifying the jewelry workpiece prepared in the step three by adopting electrolytic powder to remove oil stains and residues on the surface of the jewelry workpiece, and then cleaning the jewelry workpiece;

and fifthly, plating a chromium layer, a silicon layer and a magnesium fluoride layer on the surface of the jewelry workpiece in sequence by adopting a vapor deposition sputtering method to prepare the antioxidant wear-resistant noble metal jewelry.

The evaporation sputtering method comprises the following steps:

a. cleaning and removing static electricity on the surface of the jewelry workpiece in the step four;

b. fixing the magnesium fluoride pendant on an electrified clamp in an evaporation sputtering chamber of an evaporation machine, then hanging the jewelry workpiece treated by the step a on the magnesium fluoride pendant, finally closing an evaporation machine door, and vacuumizing the evaporation sputtering chamber;

c. argon is filled into the evaporation sputtering chamber, then the chromium metal magnetron sputtering target is electrified and is irradiated by lamplight, so that the chromium metal magnetron sputtering target generates chromium ions to deposit and attach to the surface of a jewelry workpiece to form a chromium layer;

d. electrifying the silicon alloy magnetron sputtering target, and irradiating by using lamplight to ensure that the silicon alloy magnetron sputtering target generates silicon ions to deposit and attach on the chromium layer of the jewelry workpiece to form a silicon layer;

e. electrifying and heating the magnesium fluoride metal to enable the magnesium fluoride metal to generate magnesium fluoride ions to deposit and attach to the silicon layer of the jewelry workpiece to form a magnesium fluoride layer;

f. releasing the vacuum in the evaporation sputtering chamber, and taking out the product to obtain the antioxidant wear-resistant noble metal jewelry.

Wherein, in the step c, the electrifying current is 4-6A, the temperature of the sputtering treatment is 260-400 ℃, and the time of the sputtering treatment is 5-20 min.

Wherein, in the step d, the electrifying current is 1-2A, the temperature of the sputtering treatment is 100-200 ℃, and the time of the sputtering treatment is 5-20 min.

Wherein, in the step e, the electrifying current is 3-4A, the temperature of the sputtering treatment is 100-200 ℃, and the time of the sputtering treatment is 2-5 min.

Wherein, the heating in the first step is up to 1000-1200 ℃.

Wherein, in the second step, the furnace temperature of the tempering furnace during the tempering treatment is 280-320 ℃, and the tempering treatment time is 80-100 min.

Wherein, in the third step, the polishing speed is 2700-.

Wherein in the third step, the ultrasonic cleaning power is 900-.

Wherein, the stirring speed in the first step is 200-500r/min, and the stirring time is 0.6-1 h.

In the second step, the Vickers hardness of the mold oil pressure or the blank after casting is 245-255, and the Vickers hardness of the blank after tempering is 295-305.

In the fourth step, the washed jewelry workpiece is processed into K golden jewelry, K golden red jewelry or K golden white jewelry according to the product requirement; specifically, 4-6A of current is conducted by using electrogilding water, the electrifying time is 9-11s, the temperature is controlled to be 58-62 ℃, gold is electroplated on the surface of the jewelry workpiece, then the electroplated jewelry workpiece is taken out of the electrogilding water and is cleaned for 1min by using clear water, and K yellow jewelry is prepared; electroplating rhodium on the surface of a jewelry workpiece, wherein the current intensity is 2-5A, the electricity is conducted for 45-60s, and the temperature is 39-41 ℃, so as to prepare K white jewelry; the K red jewelry does not need to be electroplated.

The invention has the beneficial effects that:

the preparation process is simple, the efficiency is high, the precious metal is utilized to carry out sputtering treatment on the jewelry workpiece, a uniform protective layer is formed on the surface of the jewelry workpiece, the surface of the jewelry is not easy to oxidize, the wear resistance is higher, the anti-fouling capability is better, the waterproof performance is enhanced, the detection angle of a water drop angle tester is more than 110 degrees, the salt spray test is not oxidized after 48 hours, and the cloth product is not scratched for 60 times.

According to the invention, the blank is tempered, so that the hardness of the blank is enhanced, the Vickers hardness of the prepared jewelry reaches more than 300, and the hardness after tempering is improved by 1 time compared with the common casting hardness.

Detailed Description

The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.