CN108913934A - A kind of findings have the 18K dark fund and its technique of excellent fade resistance energy - Google Patents

Abstract

The invention discloses 18K dark funds and its technique that a kind of findings have excellent fade resistance energy.According to weight percent, the ingredient of the alloy is:Li:0.6-0.8wt.%,Bi:1.0-1.5wt.%,Y:1.2-1.4wt.%,Mo:1.5-1.8wt.%,Mn:4.0-6.0wt.%,Fe:6.0-8.0wt.%,Au:74.0-76.0wt.%, surplus are cobalt.The patent solves the current insufficient status of K dark fund performance, and effectively breaches the development bottleneck in field of jewelry.It is contemplated that the implementation and industrialization of the material can obtain plentiful and substantial economic gain and social benefit.

Description

A kind of findings have the 18K dark fund and its technique of excellent fade resistance energy

Technical field

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

Background technique

One of the characteristics of gold is exactly soft, so be difficult to inlay the style for producing various finenesses, especially when inlaying pearl, treasured It is easy to be lost when the treasures such as stone and emerald.General described proof gold is all that in contrast, karat gold is gold and other Metal Meltings Alloy together is referred to as karat gold by the English word Kara Gold of alloy.If proof gold is divided into 24 parts, 1 part is exactly Thus 1K calculates that every K gold content is converted into 4.15%, have less more since the additional amount of other metals has, just form karat gold jewellery Different K numbers, therefore gold jewelry common purity rubric in China's mainly has 24K, 22K, 18K and 14K etc..24K is to proof gold For, indicate gold content 99. 6% or more.

With the difference of addition element and content, karat gold can show different colors.In general, karat gold is according to color Classification mainly has：1）The karat gold jewellery of Yellow series：Glittering gold jewelry is the love of the mind of numerous women forever.Although Its tradition, style is single, but wears the women of karat gold jewellery, the product of the elegant and poised makings shown and graceful atmosphere Taste is incisively and vividly.2）The karat gold jewellery of white series：Plain pure white karat gold jewellery are most classic styles.Either Ear nail, pendant or ring, a kind of exclusive beautiful and charming makings and grade of women is not by coming out.3）Red series Karat gold jewellery：Red representative enthusiasm, so wear the women of red k gold ornaments, give out from inside to outside be enthusiasm seemingly Fire, active makings and grade.

Why karat gold jewellery receive an acclaim, and are because they are better than proof gold jewellery in many aspects.Jewellery are to best embody Reasonably combined on style and color of the graceful jewelry of cultural ethos, jewellery and clothes can play extraordinary refined decoration effect Fruit.The diversification of karat gold jewellery, personalized style meet consumer demand, and therefore it is also continued to develop.Karat gold is first Decorations are being evolved into a kind of relationship interacted with fashionable dress, and the ornaments of fashion and the fashionable dress of jewellery are that the people of pursuit trend are flat Add more moving glamour appearance to adopt.Karat gold and gold have the characteristics that apparent different and respective in texture and weight.By It is few in the yield of gold, in addition price is high, so general country is commonly used karat gold to carry out jewellery production.Karat gold has good anti- Penetrating property, hardness is high, not easy to wear, is mainly used to inlay the metal of down gemstone jewelry.Generally to be liked in recent years by young man, As most popular popular ornaments.

Though true yellow gold ornaments is noble, it can preserve value, be influenced by style and price.Karat gold jewellery with its a variety of pattern and Lower price has the great market competitiveness.With the fast development of jewellery industry, domestic karat gold jewellery in conjunction with high-tech, Its processing and fabricating level is continuously improved, and designs and varieties are continuously increased, and style renewal speed is fast, and is captured increasingly with the speed that is exceedingly fast More market, people gradually more like karat gold jewellery.

The color of karat gold is in addition to above-mentioned yellow, white and red, also with the type of black.Traditionally, when iron is added to The bule gold formed when in gold just has the color of black.But regrettably, the additional amount of iron must reach 40wt.% or more.But so high iron content, a large amount of generations of intermetallic compound certainly will be caused.That is, traditional work The black K gold that skill and formula are prepared is too crisp.In process engineering, it is extremely easy a large amount of lifes because of intermetallic compound At and form brittle crack or fracture.It is not only not easy to be processed, and commercial is limited, and the market sales volume is also little.This Outside, the jewellery of material preparation black after using 1 year can fade.Further, since the influence of timeliness, the material it is strong Degree, hardness can be also continuously increased in use, and material is caused to become fragile and brittle failure occurs.Not only affect the sight of such material Sense, also seriously reduces the market sales volume and marketing of such material.

Although the absolute number of China's jewelry and decoration industry in quantity and yield is larger, scope of the enterprise is small, core Heart competitiveness is not strong.In development process, jewelry enterprise is not innovated during productive accumulation usually as processor, Form out the characteristic of oneself.For a long time, most domestic jewelry enterprise all rests on the OEM form of order processing, makes With the production line of oneself, the product of oneself is produced, finally but sticks other people brand.It is first even some biggish enterprises Decorations and the critical material of trim-alloy production but almost rely on import, are almost one in terms of Novel decoration material development Piece blank.Therefore, research and development and industrialization high-performance karat gold material with independent intellectual property rights and its technology of preparing, for enhancing The competitiveness of China's jewelry and decoration industry will have the function of very positive.

Summary of the invention

The purpose of the present invention is to overcome the deficiency in the prior art, provide a kind of findings have excellent fade resistance can 18K dark fund and its technique.

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

A kind of findings have the 18K dark fund and its technique of excellent fade resistance energy.By weight percentage, the group of alloy becomes Li:0.6-0.8wt.%,Bi:1.0-1.5wt.%,Y:1.2-1.4wt.%,Mo:1.5-1.8wt.%,Mn:4.0-6.0wt.%,Fe: 6.0-8.0wt.%,Au:74.0-76.0wt.%, surplus are cobalt.

A kind of above-mentioned findings have the 18K dark fund of excellent fade resistance energy and its preparation method of technique, including as follows Step：As above the raw material matched is added in the electric induction furnace of argon gas protection, and uses graphite crucible;It is used after metal molten The argon gas of low discharge is protected, and big air-flow is avoided to make the serious scaling loss of alloying element;10 minutes are kept the temperature at 1200 degree when melting, by height Frequency induction furnace electromagnetic agitation is uniform;1 minute, which is kept the temperature, at 1200 degree after mixing evenly and is cast comes out of the stove;Billon casting uses diameter The punching block of 50-100mm, and cooled down by the way of water cooling.Resulting ingot casting is rolled at room temperature, rolls lower amount per pass For 30-40%;It is 380 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.5 hour;Finally by material be rolled into a thickness of The golden plate of 10-20mm;It in jewellery forming process, needs to carry out intermediate annealing process, eliminates the stress in process;Its In, homogenization temperature is 350 degree, and the time is 1-2 hours.

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

（1）Traditionally, the bule gold formed when iron is added in gold just has the color of black.But it is unluckily It is that the additional amount of iron must reach 40wt.% or more.But so high iron content, a large amount of of intermetallic compound certainly will be caused It generates.That is, the black K gold that traditional handicraft and formula are prepared is too crisp.In process engineering, extremely be easy because Intermetallic compound it is a large amount of generation and form brittle crack or fracture.It is not only not easy to be processed, and commercial is limited, The market sales volume is also little.In addition, the jewellery of material preparation black after using 1 year can fade.Further, since when The influence of effect, the intensity of the material, hardness can be also continuously increased in use, and material is caused to become fragile and brittle failure occurs.This Patent has carried out multi-faceted innovation and raising, the iron content of gained alloy to K alloy material by advanced materialogy technology 10wt.% or less can be reduced to.Due to reducing the content of intermetallic compound, which thus has extremely at room temperature Excellent toughness.That is, it solves the color that field of jewelry K alloy material is difficult to take into account, corrosion resistance and The status that processing performance cannot obtain simultaneously.

（2）In at the international level, which has reached international most advanced level, and performance alreadys exceed external similar Product Level, overall technology occupy domestically leading level.By optimization design multicomponent alloy element to billon tissue and performance It influences, improves the proportion and smelting technology of alloy on this basis.The formula and technique of the alloy can be such that crystal grain obtains carefully Change.In addition, the alloy have low liquid-solid phase solidification temperature range, hot cracking tendency is big when can solve casting, casting cavity and The technical problems such as loose obvious product yield rate is low.Smelting processing method is simple, and production cost is relatively low, reduces and wants to equipment It asks, convenient for large-scale production and application.

（3）The optimization of the alloy overcomes phase decomposition at low temperature in the black karat gold of tradition, causes alloy to be also easy to produce stress and opens It splits.So the cold and hot working performance of the alloy is very excellent.In addition, the black karat gold generation grey film easy to oxidize of tradition, and the film Due to basal body binding force is loose and easy falls off from jewellery surface.Thus, the black karat gold of tradition is easy to become in use Color, and the entirety of surface alloy is caused to fall off.The alloy of present patent application closes when carrying out alloying component and performance optimizes The screening of golden ingredient selects the alloying element being added in alloy can be on surface first from the point of view of Electrochemical Corrosion Mechanism Passivating film is formed, to play a protective role to ambient enviroment corrosion.This film is in different media, due to unpolarizing As a result, to showing different corrosion resistances, it is also more stable to the corrosion resistance of strong acid, strong basicity sweat.The material There is no metachromatisms in 10 years in the case where normal human body wears environment for the jewellery of preparation.It is contemplated that the implementation of the material Excellent economic benefit and social benefit will be obtained with industrialization.

Specific embodiment

Embodiment 1

A kind of findings have the 18K dark fund and its technique of excellent fade resistance energy.By weight percentage, the group of alloy becomes Li:0.6wt.%,Bi:1.0wt.%,Y:1.2wt.%,Mo:1.5wt.%,Mn:4.0wt.%,Fe:6.0wt.%,Au:74.0wt.%, Surplus is cobalt.A kind of above-mentioned findings have the 18K dark fund and its technique of excellent fade resistance energy, include the following steps：It will be as The raw material of upper proportion is added in the electric induction furnace of argon gas protection, and uses graphite crucible;Using low discharge after metal molten Argon gas protection, avoids big air-flow from making the serious scaling loss of alloying element;10 minutes are kept the temperature at 1200 degree when melting, leans on Efco-Northrup furnace Electromagnetic agitation is uniform;1 minute, which is kept the temperature, at 1200 degree after mixing evenly and is cast comes out of the stove;Billon casting uses diameter 50-100mm Punching block, and cooled down by the way of water cooling.Resulting ingot casting is rolled at room temperature, rolling lower amount per pass is 30- 40%;It is 380 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.5 hour;Finally material is rolled into a thickness of 10-20mm Golden plate;It in jewellery forming process, needs to carry out intermediate annealing process, eliminates the stress in process;Wherein, it homogenizes Temperature is 350 degree, and the time is 1-2 hours.

The alloy solves field of jewelry K alloy material and is difficult to the color taken into account, and corrosion resistance and processing performance cannot The status obtained simultaneously.The formula and technique of the alloy can be such that crystal grain is refined.In addition, the alloy has low liquid-solid phase The technologies such as solidification temperature range, hot cracking tendency is big when can solve casting, and casting cavity is low with loose obvious product yield rate are difficult Topic.Smelting processing method is simple, and production cost is relatively low, reduces to equipment requirement, convenient for large-scale production and application.Alloy The screening of ingredient selects the alloying element being added in alloy can be in surface shape first from the point of view of Electrochemical Corrosion Mechanism At passivating film, to play a protective role to ambient enviroment corrosion.This film is in different media, due to unpolarizing As a result, to show different corrosion resistances, it is also more stable to the corrosion resistance of strong acid, strong basicity sweat.The material system There is no metachromatisms in 10 years in the case where normal human body wears environment for standby jewellery.

Embodiment 2

A kind of findings have the 18K dark fund and its technique of excellent fade resistance energy.By weight percentage, the group of alloy becomes Li:0.8wt.%,Bi:1.5wt.%,Y:1.4wt.%,Mo:1.8wt.%,Mn:6.0wt.%,Fe:8.0wt.%,Au:76.0wt.%, Surplus is cobalt.A kind of above-mentioned findings have the 18K dark fund and its technique of excellent fade resistance energy, include the following steps：It will be as The raw material of upper proportion is added in the electric induction furnace of argon gas protection, and uses graphite crucible;Using low discharge after metal molten Argon gas protection, avoids big air-flow from making the serious scaling loss of alloying element;10 minutes are kept the temperature at 1200 degree when melting, leans on Efco-Northrup furnace Electromagnetic agitation is uniform;1 minute, which is kept the temperature, at 1200 degree after mixing evenly and is cast comes out of the stove;Billon casting uses diameter 50-100mm Punching block, and cooled down by the way of water cooling.Resulting ingot casting is rolled at room temperature, rolling lower amount per pass is 30- 40%;It is 380 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.5 hour;Finally material is rolled into a thickness of 10-20mm Golden plate;It in jewellery forming process, needs to carry out intermediate annealing process, eliminates the stress in process;Wherein, it homogenizes Temperature is 350 degree, and the time is 1-2 hours.

The alloy solves field of jewelry K alloy material and is difficult to the color taken into account, and corrosion resistance and processing performance cannot The status obtained simultaneously.The formula and technique of the alloy can be such that crystal grain is refined.In addition, the alloy has low liquid-solid phase The technologies such as solidification temperature range, hot cracking tendency is big when can solve casting, and casting cavity is low with loose obvious product yield rate are difficult Topic.Smelting processing method is simple, and production cost is relatively low, reduces to equipment requirement, convenient for large-scale production and application.Alloy The screening of ingredient selects the alloying element being added in alloy can be in surface shape first from the point of view of Electrochemical Corrosion Mechanism At passivating film, to play a protective role to ambient enviroment corrosion.This film is in different media, due to unpolarizing As a result, to show different corrosion resistances, it is also more stable to the corrosion resistance of strong acid, strong basicity sweat.The material system There is no metachromatisms in 10 years in the case where normal human body wears environment for standby jewellery.

Embodiment 3

A kind of findings have the 18K dark fund and its technique of excellent fade resistance energy.By weight percentage, the group of alloy becomes Li:0.7wt.%,Bi:1.2wt.%,Y:1.3wt.%,Mo:1.6wt.%,Mn:4.5wt.%,Fe:7.0wt.%,Au:75.0wt.%, Surplus is cobalt.A kind of above-mentioned findings have the 18K dark fund and its technique of excellent fade resistance energy, include the following steps：It will be as The raw material of upper proportion is added in the electric induction furnace of argon gas protection, and uses graphite crucible;Using low discharge after metal molten Argon gas protection, avoids big air-flow from making the serious scaling loss of alloying element;10 minutes are kept the temperature at 1200 degree when melting, leans on Efco-Northrup furnace Electromagnetic agitation is uniform;1 minute, which is kept the temperature, at 1200 degree after mixing evenly and is cast comes out of the stove;Billon casting uses diameter 50-100mm Punching block, and cooled down by the way of water cooling.Resulting ingot casting is rolled at room temperature, rolling lower amount per pass is 30- 40%;It is 380 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.5 hour;Finally material is rolled into a thickness of 10-20mm Golden plate;It in jewellery forming process, needs to carry out intermediate annealing process, eliminates the stress in process;Wherein, it homogenizes Temperature is 350 degree, and the time is 1-2 hours.

The alloy solves field of jewelry K alloy material and is difficult to the color taken into account, and corrosion resistance and processing performance cannot The status obtained simultaneously.The formula and technique of the alloy can be such that crystal grain is refined.In addition, the alloy has low liquid-solid phase The technologies such as solidification temperature range, hot cracking tendency is big when can solve casting, and casting cavity is low with loose obvious product yield rate are difficult Topic.Smelting processing method is simple, and production cost is relatively low, reduces to equipment requirement, convenient for large-scale production and application.Alloy The screening of ingredient selects the alloying element being added in alloy can be in surface shape first from the point of view of Electrochemical Corrosion Mechanism At passivating film, to play a protective role to ambient enviroment corrosion.This film is in different media, due to unpolarizing As a result, to show different corrosion resistances, it is also more stable to the corrosion resistance of strong acid, strong basicity sweat.The material system There is no metachromatisms in 10 years in the case where normal human body wears environment for standby jewellery.

Claims (3)

1. 18K dark fund and its technique that a kind of findings have excellent fade resistance energy；By weight percentage, the composition of alloy For Li:0.6-0.8wt.%,Bi:1.0-1.5wt.%,Y:1.2-1.4wt.%,Mo:1.5-1.8wt.%,Mn:4.0-6.0wt.%, Fe:6.0-8.0wt.%,Au:74.0-76.0wt.%, surplus are cobalt.

2. a kind of findings described in claim 1 have excellent fade resistance can 18K dark fund and its technique, it is characterised in that packet Include following smelting step：As above the raw material matched is added in the electric induction furnace of argon gas protection, and uses graphite crucible;Metal It is protected after fusing using the argon gas of low discharge, big air-flow is avoided to make the serious scaling loss of alloying element;It is kept the temperature when melting at 1200 degree It is 10 minutes, uniform by Efco-Northrup furnace electromagnetic agitation;1 minute, which is kept the temperature, at 1200 degree after mixing evenly and is cast comes out of the stove;Billon Casting uses the punching block of diameter 50-100mm, and is cooled down by the way of water cooling.

3. having the 18K dark fund and its technique of excellent fade resistance energy according to a kind of findings described in claim 1, it is characterised in that Comprising using step as follows：Resulting ingot casting is rolled at room temperature, rolling lower amount per pass is 30-40%;It is every to roll twice Intermediate anneal temperature is 380 degree afterwards, keeps the temperature 0.5 hour;Material is finally rolled into the golden plate with a thickness of 10-20mm;In jewellery It in forming process, needs to carry out intermediate annealing process, eliminates the stress in process;Wherein, homogenization temperature is 350 degree, Time is 1-2 hours.