CN108588537A - The corrosion-resistant not argentiferous 10K rose golds of one kind and its processing technology - Google Patents

Abstract

The invention discloses a kind of corrosion-resistant not argentiferous 10K rose golds and its processing technologys.According to weight percent, the ingredient of the alloy is:Li:0.6‑0.8wt.%,Rh:1.0‑1.5wt.%,Ta:0.3‑0.5wt.%,Pr:0.1‑0.4wt.%,In:30.0‑32.0wt.%,Au:40.0 42.0wt.%, surplus are copper.The patent provides a kind of the 10K rose golds and its processing technology of novel not argentiferous, and solve traditional rose gold and use the characteristic faded with surface scratch.Due to the development bottleneck of innovation and optimization breakthrough jewellery 10K rose gold materials by alloying component, the implementation and industrialization of the material can obtain plentiful and substantial economic gain and social benefit.

Description

The corrosion-resistant not argentiferous 10K rose golds of one kind and its processing technology

Technical field

The present invention relates to technical field of alloy, specifically, being related to a kind of billon.

Background technology

Gold is very soft, can inlay the style for making various finenesses, precious particularly for inlaying pearl, jewel and emerald etc. Product.In order to enhance the hardness of gold, the metals such as a small amount of silver, copper, zinc are added to increase the intensity of gold and tough in people in gold Property, gold jewellery manufactured in this way claims karat gold.The carat (measure of the purity of gold) standard K of proof gold content, is usually known as 24K gold by proof gold in the golden product of mark, But it is the gold that theoretically gold content is 100%, actually and is not present.So in national standard, businessman indicates gold ornament Gold content without exception must not use 24K gold standard method lack of standardization.1K represents golden product and accounts for 1/24 containing proof gold, about 4.16%, 18K Jin Dynasty table gold content are 75%, remaining is alloying element.

Karat gold can be configured to a variety of colors as needed, and popular karat gold a variety of colors has in the world.It is added with gold The Metal Meltings such as copper, aluminium, silver, cobalt, palladium, iron, cadmium, nickel, ratio it is different and will appear therewith purplish red, red, powder, Huang, orange, it is green, blue, Brown and black karat gold.In the world of handsel, color is peculiar, and price will be more expensive, as black, blue price just compare It is expensive.Relatively common in daily life is K red, and K Huangs and K are white.

Rose gold is after sparkling gold ornament with classical graceful platinum ornaments, the soft charming rose of tone Gold ornaments gradually become the new lover of fashion personage, and with its idiosyncrasy and culture, deduce precious metal jewelry another is brand-new The world.In general, rose gold is by gold and silver, other composition of alloy such as copper.Since rose gold hardness is compared with proof gold height, with traditional Huang Gold is compared with platinum, and pink rose gold not only can make the color of colored gemstone denser, and metal material is also presented It is exquisite, fine and smooth.

Legend pink rose gold appears in Victoria's late period earliest, jewelry designer's this warm tones gold at that time Belong to and come embedding gem and embossment, or makes the ornaments such as brooch.The warm tones such as its pink, rose bring it is warm with it is happy. It is also in different poses and with different expressions on style, there is pointed heart, olive, oval, pyriform, Emerald.The ornaments of various different styles.Female Property either business wear or evening dress and suspender skirt, match all show graceful makings therewith.Rose is beautiful with fashion Rose-red color, it is also more harmonious and total to seem that more steady and colour jewel is put together compared with gold and platinum Energy band gives designer new inspiration.The fashion radiant force of rose gold has spread to garment sector, accessories circle and makeups circle.

In electronics field, rose gold also receives favor.Rose gold is exactly an example for iPhone 6s, it makes rose Rare gold is that a kind of mainstream of electronic product is matched colors.After iPhone6s releases rose gold version, many manufacturers also start one after another The color matching of rose gold is added on oneself product to attract user, rose gold to have become the mainstream color of electronic product.Apple Fruit then takes advantage of victory and pursues and attacks, and is proposed iPad, MacBook and the Beats earphone of rose gold version.Huawei is also proposed rose The wrist-watch product and MateS of golden version.Samsung is also proposed the GearS2 smartwatch of rose gold version.

Find that rose gold surface has apparent draw for commercialized K rose golds, after long-time use at present Trace exists, and is partially stripped phenomenon, and surface is relatively rough and metachromatism is apparent.This phenomenon is particularly with rose gold and skin Skin mantle friction frequency is common when high, and the surface roughness that is contacted with rose gold is bigger, the surface abrasion of rose gold Degree is also bigger.And generation surface discolouration phenomenon after a certain period of time is being worn on the surface of rose gold, loses original gloss. Thus, solve the problems, such as rose gold decolourize and wear after use it is apparent be jewellery industry a great problem.Due to this spy Different property, it is especially prominent in production and use, bring many puzzlements to jewellery manufacturing enterprise and user.

It has been the inevitable problem of field of jewelry to be worn caused by the surface discolouration and hardness of K rose golds are relatively low, Also rose gold is affected in actual production and selling.Enterprise and research institution both domestic and external have carried out many taste for a long time Examination is studied very much.But presently, addition is passed through using the method for alloying for the surface discolouration problem of K rose golds A certain amount of alloying element improves the corrosion resistance of alloy.But do not find so far a suitable ingredient and Solution.Similarly, although plating the coating such as one layer of TiCN in rose gold surface to improve abrasion resistance properties, also only Be it is limited prolong the service life, not breaking off relations problem fundamentally.It can pass through bottom by advanced design of material technology The thermodynamics and kinetics means of layer property innovate alloy material, and the discoloration to K rose golds and hardness deficiency problem Solution and industrialization have prodigious market value.In face of the domestic and international market competition being growing more intense, it is necessary to accelerate knot Structure adjusts paces, this is not only the needs of China's jewellery industry survival and development and the development of world today's related field becomes Gesture.

Invention content

The purpose of the present invention is to overcome the deficiency in the prior art, provides the corrosion-resistant not argentiferous 10K rose golds of one kind and its adds Work technique.

To achieve the goals above, the present invention adopts the following technical scheme that：

The corrosion-resistant not argentiferous 10K rose golds of one kind and its processing technology.By weight percentage, the group of alloy becomes Li:0.6- 0.8wt.%,Rh:1.0-1.5wt.%,Ta:0.3-0.5wt.%,Pr:0.1-0.4wt.%,In:30.0-32.0wt.%,Au: 40.0-42.0wt.%, surplus are copper.

The preparation method of a kind of above-mentioned corrosion-resistant not argentiferous 10K rose golds and its processing technology, includes the following steps：It will be as The raw material of upper proportioning is added in the electric induction furnace of argon gas protection, and uses graphite crucible;Using low discharge after metal molten Argon gas is protected, and big air-flow is avoided to make the serious scaling loss of alloying element;10 minutes are kept the temperature at 1150 degree when melting, leans on Efco-Northrup furnace Electromagnetic agitation is uniform;1 minute being kept the temperature at 1250 degree after stirring evenly and being cast come out of the stove;Billon casting uses diameter 100- The punching block of 200mm, and cooled down by the way of water cooling.The ingot casting of gained is rolled at room temperature, every time rolls lower amount and is 30-40%;It is 680 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.5 hour;It is 10- that material, which is finally rolled into thickness, The golden plate of 20mm;In jewellery forming process, needs to carry out intermediate annealing process, eliminate the stress in process;Wherein, It is 800 degree to homogenize temperature, and the time is 1-2 hours.

Compared with prior art, the present invention has the advantages that：

（1）Traditional rose gold is by gold, and silver, the made of metal such as copper are standby, but alloying element therein is easy oxidation, leads to rose There is a phenomenon where surface discolourations after a certain period of use time for gold.Additionally, because the list of traditional rose gold in use almost The fcc states of phase, thus hardness is insufficient, is susceptible to surface scratch in use.Thus, how to promote the resistance to of rose gold Corrosive nature with case hardness be jewellery production industry together with technical barrier.Traditional rose gold, due to wherein containing Gold and copper and generate structure ordering.For Au and Cu alloys, when temperature is more than 410 degree, Au and Cu random can be distributed in In fcc lattices so that alloy shows due ductility.But when alloy is cool below 410 degree, Au and Cu atoms are just Start regularly to arrange and form some such as AuCu, Au₃Cu and AuCu₃Equal metallic compounds.Au and Cu atoms can be in metal Occupy fixed position in crystal, this phenomenon is referred to as order process.Occupy-place of the process of ordering due to changing atom, The boundary of the domain of order is formd, thus the corrosion of rose gold can be accelerated, forms the colour fading during use.Present patent application is not The corrosion-resistant 10K rose golds of argentiferous delay the process of ordering by the method for alloying significantly, and by being significantly dissolved Strengthening effect improves the surface smoothness of rose gold, keep single phase while, improve alloy case hardness and The phenomenon that using discoloration.

（2）By introducing trace element and content, the forming core of cenotype can be avoided in cooling procedure and growing up, thus most Finished product exists in the form of single-phase.Due to the not generation of ordering or the generation of transformation stress, thus the alloy is in room Great plasticity under temperature, elongation percentage can reach 40-60%.During preparing jewellery, deflection can reach 50% and not have to Intermediate annealing.Due to improving mechanical property, thus processing efficiency and rejection rate substantially reduce.In addition, the alloy is with low Liquid-solid phase solidification temperature range can solve hot cracking tendency when casting is big, and casting cavity is low with loose apparent product yield rate etc. Technical barrier.Smelting processing method is simple, and production cost is relatively low, reduces to equipment requirement.

（3）Being free of for traditional 10K rose golds and present patent application is had detected under the conditions of the acidity of simulation and alkaline sweat Silver-colored 10K rose golds.Under artificial sweat environment 240 in (acid sweat pH 4-5, alkaline sweat pH=8-9,6% sodium chloride solution) H or more, color do not change.In corrosive environment, can be formed passivation protective film, this film in different media, due to Unpolarizing as a result, to show different corrosion resistances, it is also relatively steady to the corrosion resistance of strong acid, strong basicity sweat It is fixed.The rose gold ornaments of the material preparation is worn under ocean and desert environment that metachromatism does not occur in 10 years, and is passed The 10K rose golds of system just have the phenomenon that surface discolouration after using 3 years.In addition, the alloy is up to 10 years validity periods Under interior normal use environment, surface scratch will not occur.Even if nail is streaked in the alloy surface, any trace will not be left Mark considerably increases the case hardness of rose gold material.

（4）In addition, the material can carry out medium temperature and cold working, cutting material can remelting.Weldability can use spelter solder and gold, silver Gold solder welding is imitated in solder and autogamy.With the similar appearance of common jewellery 10K rose golds, the processing having had, welding performance are right Without particular/special requirement, price is relatively low, is the rose gold upgrading products of current color and luster grace for melting, processing.It is contemplated that the material Implementation and industrialization can obtain excellent economic benefit and social benefit.

Specific implementation mode

Embodiment 1

The corrosion-resistant not argentiferous 10K rose golds of one kind and its processing technology.By weight percentage, the group of alloy becomes Li: 0.6wt.%,Rh:1.0wt.%,Ta:0.3wt.%,Pr:0.1wt.%,In:30.0wt.%,Au:40.0wt.%, surplus are copper.On The preparation method for stating a kind of corrosion-resistant not argentiferous 10K rose golds and its processing technology, includes the following steps：The original that will as above match Material is added in the electric induction furnace of argon gas protection, and uses graphite crucible;It is protected, is kept away using the argon gas of low discharge after metal molten Exempting from big air-flow makes the serious scaling loss of alloying element;10 minutes are kept the temperature at 1150 degree when melting, it is equal by Efco-Northrup furnace electromagnetic agitation It is even;1 minute being kept the temperature at 1250 degree after stirring evenly and being cast come out of the stove;Billon casting uses the punching block of diameter 100-200mm, and Cooled down by the way of water cooling.The ingot casting of gained is rolled at room temperature, it is 30-40% that every time, which rolls lower amount,;It is every to roll twice Intermediate anneal temperature is 680 degree after system, keeps the temperature 0.5 hour;Material is finally rolled into the golden plate that thickness is 10-20mm;In head It adorns in forming process, needs to carry out intermediate annealing process, eliminate the stress in process;Wherein, homogenization temperature 800 Degree, time are 1-2 hours.

The material delays the process of ordering by the method for alloying significantly, and is imitated by apparent solution strengthening The surface smoothness of rose gold should be improved, keep single phase while, improve the case hardness of alloy and using becoming The phenomenon that color.By introducing trace element and content, the forming core of cenotype can be avoided in cooling procedure and growing up, thus it is final Product exists in the form of single-phase.Due to the not generation of ordering or the generation of transformation stress, thus the alloy is in room temperature Under great plasticity, elongation percentage can reach 40-60%.During preparing jewellery, during deflection can reach 50% and not have to Between anneal.Due to improving mechanical property, thus processing efficiency and rejection rate substantially reduce.In corrosive environment, it can be formed blunt The protective film of change, this film is in different media, since unpolarizing is as a result, to show different corrosion resistances Can, the corrosion resistance of strong acid, strong basicity sweat is also relatively stablized.The rose gold ornaments of the material preparation is in ocean and desert ring It is worn under border that metachromatism does not occur in 10 years, and traditional 10K rose golds just have the phenomenon that surface discolouration after using 3 years Occur.In addition, up under normal use environment in 10 years validity periods surface scratch will not occur for the alloy.Even if referring to First is streaked in the alloy surface, will not leave any trace, considerably increases the case hardness of rose gold material.

Embodiment 2

The corrosion-resistant not argentiferous 10K rose golds of one kind and its processing technology.By weight percentage, the group of alloy becomes Li: 0.8wt.%,Rh:1.5wt.%,Ta:0.5wt.%,Pr:0.4wt.%,In:32.0wt.%,Au:42.0wt.%, surplus are copper.On The preparation method for stating a kind of corrosion-resistant not argentiferous 10K rose golds and its processing technology, includes the following steps：The original that will as above match Material is added in the electric induction furnace of argon gas protection, and uses graphite crucible;It is protected, is kept away using the argon gas of low discharge after metal molten Exempting from big air-flow makes the serious scaling loss of alloying element;10 minutes are kept the temperature at 1150 degree when melting, it is equal by Efco-Northrup furnace electromagnetic agitation It is even;1 minute being kept the temperature at 1250 degree after stirring evenly and being cast come out of the stove;Billon casting uses the punching block of diameter 100-200mm, and Cooled down by the way of water cooling.The ingot casting of gained is rolled at room temperature, it is 30-40% that every time, which rolls lower amount,;It is every to roll twice Intermediate anneal temperature is 680 degree after system, keeps the temperature 0.5 hour;Material is finally rolled into the golden plate that thickness is 10-20mm;In head It adorns in forming process, needs to carry out intermediate annealing process, eliminate the stress in process;Wherein, homogenization temperature 800 Degree, time are 1-2 hours.

The material delays the process of ordering by the method for alloying significantly, and is imitated by apparent solution strengthening The surface smoothness of rose gold should be improved, keep single phase while, improve the case hardness of alloy and using becoming The phenomenon that color.By introducing trace element and content, the forming core of cenotype can be avoided in cooling procedure and growing up, thus it is final Product exists in the form of single-phase.Due to the not generation of ordering or the generation of transformation stress, thus the alloy is in room temperature Under great plasticity, elongation percentage can reach 40-60%.During preparing jewellery, during deflection can reach 50% and not have to Between anneal.Due to improving mechanical property, thus processing efficiency and rejection rate substantially reduce.In corrosive environment, it can be formed blunt The protective film of change, this film is in different media, since unpolarizing is as a result, to show different corrosion resistances Can, the corrosion resistance of strong acid, strong basicity sweat is also relatively stablized.The rose gold ornaments of the material preparation is in ocean and desert ring It is worn under border that metachromatism does not occur in 10 years, and traditional 10K rose golds just have the phenomenon that surface discolouration after using 3 years Occur.In addition, up under normal use environment in 10 years validity periods surface scratch will not occur for the alloy.Even if referring to First is streaked in the alloy surface, will not leave any trace, considerably increases the case hardness of rose gold material.

Embodiment 3

The corrosion-resistant not argentiferous 10K rose golds of one kind and its processing technology.By weight percentage, the group of alloy becomes Li: 0.7wt.%,Rh:1.4wt.%,Ta:0.4wt.%,Pr:0.2wt.%,In:31.0wt.%,Au:41.0wt.%, surplus are copper.On The preparation method for stating a kind of corrosion-resistant not argentiferous 10K rose golds and its processing technology, includes the following steps：The original that will as above match Material is added in the electric induction furnace of argon gas protection, and uses graphite crucible;It is protected, is kept away using the argon gas of low discharge after metal molten Exempting from big air-flow makes the serious scaling loss of alloying element;10 minutes are kept the temperature at 1150 degree when melting, it is equal by Efco-Northrup furnace electromagnetic agitation It is even;1 minute being kept the temperature at 1250 degree after stirring evenly and being cast come out of the stove;Billon casting uses the punching block of diameter 100-200mm, and Cooled down by the way of water cooling.The ingot casting of gained is rolled at room temperature, it is 30-40% that every time, which rolls lower amount,;It is every to roll twice Intermediate anneal temperature is 680 degree after system, keeps the temperature 0.5 hour;Material is finally rolled into the golden plate that thickness is 10-20mm;In head It adorns in forming process, needs to carry out intermediate annealing process, eliminate the stress in process;Wherein, homogenization temperature 800 Degree, time are 1-2 hours.

The material delays the process of ordering by the method for alloying significantly, and is imitated by apparent solution strengthening The surface smoothness of rose gold should be improved, keep single phase while, improve the case hardness of alloy and using becoming The phenomenon that color.By introducing trace element and content, the forming core of cenotype can be avoided in cooling procedure and growing up, thus it is final Product exists in the form of single-phase.Due to the not generation of ordering or the generation of transformation stress, thus the alloy is in room temperature Under great plasticity, elongation percentage can reach 40-60%.During preparing jewellery, during deflection can reach 50% and not have to Between anneal.Due to improving mechanical property, thus processing efficiency and rejection rate substantially reduce.In corrosive environment, it can be formed blunt The protective film of change, this film is in different media, since unpolarizing is as a result, to show different corrosion resistances Can, the corrosion resistance of strong acid, strong basicity sweat is also relatively stablized.The rose gold ornaments of the material preparation is in ocean and desert ring It is worn under border that metachromatism does not occur in 10 years, and traditional 10K rose golds just have the phenomenon that surface discolouration after using 3 years Occur.In addition, up under normal use environment in 10 years validity periods surface scratch will not occur for the alloy.Even if referring to First is streaked in the alloy surface, will not leave any trace, considerably increases the case hardness of rose gold material.

Claims (3)

1. a kind of corrosion-resistant not argentiferous 10K rose golds and its processing technology；According to weight percent, the ingredient of the alloy is: Li:0.6-0.8wt.%,Rh:1.0-1.5wt.%,Ta:0.3-0.5wt.%,Pr:0.1-0.4wt.%,In:30.0-32.0wt.%, Au:40.0-42.0wt.%, surplus are copper.

2. the corrosion-resistant not argentiferous 10K rose golds of one kind and its processing technology described in claim 1, it is characterised in that including following smelting Refine step：As above the raw material matched is added in the electric induction furnace of argon gas protection, and uses graphite crucible;It is adopted after metal molten It is protected with the argon gas of low discharge, big air-flow is avoided to make the serious scaling loss of alloying element;10 minutes are kept the temperature at 1150 degree when melting, is leaned on Efco-Northrup furnace electromagnetic agitation is uniform;1 minute being kept the temperature at 1250 degree after stirring evenly and being cast come out of the stove;Billon casting is using straight The punching block of diameter 100-200mm, and cooled down by the way of water cooling.

3. according to a kind of corrosion-resistant not argentiferous 10K rose golds and its processing technology described in claim 1, it is characterised in that comprising as follows Use step：The ingot casting of gained is rolled at room temperature, it is 30-40% that every time, which rolls lower amount,;It is moved back per intermediate after rolling twice Fiery temperature is 680 degree, keeps the temperature 0.5 hour;Material is finally rolled into the golden plate that thickness is 10-20mm;In jewellery forming process In, it needs to carry out intermediate annealing process, eliminates the stress in process;Wherein, homogenization temperature is 800 degree, time 1-2 Hour.