CN108531763A - With extremely low work hardening rate and the grey gold alloys of the 14K of resistance to brittle failure and its technique - Google Patents
With extremely low work hardening rate and the grey gold alloys of the 14K of resistance to brittle failure and its technique Download PDFInfo
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- CN108531763A CN108531763A CN201810810586.6A CN201810810586A CN108531763A CN 108531763 A CN108531763 A CN 108531763A CN 201810810586 A CN201810810586 A CN 201810810586A CN 108531763 A CN108531763 A CN 108531763A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/02—Alloys based on gold
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/14—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of noble metals or alloys based thereon
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Abstract
The invention discloses with extremely low work hardening rate and the grey gold alloys of the 14K of resistance to brittle failure and its technique.According to weight percent, the ingredient of the alloy is:Li:0.4‑0.6wt.%,B:0.3‑0.5wt.%,Mg:2.1‑2.8wt.%,Sb:1.2‑1.5wt.%,Co:8.0‑15.0wt.%,Fe:10.0‑12.0wt.%,Au:58.0 59.0wt.%, surplus are silver.The patent solves the insufficient present situation of the golden performance of current K ashes, 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
Technical field
The present invention relates to technical field of alloy, specifically, being related to a kind of billon.
Background technology
From ancient times to the present, proof gold jewellery are very popular, not only because it can fully demonstrate the plentiful and luxurious of owner,
And value preserving effect is big.Currently, the demand of annual gold ornaments material accounts for about the 80% of golden total demand.Proof gold jewellery color and luster is beautiful
It sees, corrosion resistance and anti-discoloration are good, but hardness is low, is easily deformed, and wears no resistance, and surface is easily worn, delineates, and cause gold
Loss, influences its finish.Therefore, karat gold may be used in Jewel inlaying jewellery, i.e., alloying element is added in proof gold, golden conjunction is made
Gold to improve intensity, the wearability of jewelry gold alloy, and adjusts the color of billon.
Gold ornament can be divided into proof gold ornaments, karat gold ornaments, plating gold ornaments and 4 major class of object of imitation gold.Proof gold jewellery are in China
Prevalence is with a long history for a long time.However, in recent years, with the progress of science and technology, new technology, new process are not
Disconnected application, there has also been prodigious development for gold jewelry manufacturing industry.The situation that past is ruled all the land by proof gold jewellery has not existed.
Not only glossy brilliant proof gold jewellery, also up-and-coming youngster and colorful, gorgeous luxurious karat gold jewellery currently on the market,
And the latter has greatly the gesture contended for supremacy and dominated.
Karat gold is gold and alloy made of other metal alloyings.Due to other metals type and incorporation ratio not
Together, karat gold shows different colors, such as red, green, grey, blue, black are rich and varied.According to gold content
Difference, karat gold is divided into as 18K, the plurality of specifications such as 14K.Karat gold jewellery win many with bright color elegance and variation in moulding multiterminal
The favor of consumer.It is the most popular with 18K jewellery in karat gold jewellery at home at present.And if at abroad, style fashion, uniqueness,
In addition to the jewellery of 18K, the jewellery of 14K even 9K, 8K all become the object that people rush to buy.
Karat gold fashion gold jewellery is broken through traditional design, by its distinctive material, colourful color change and novelty, is overstated
, bold personalized designs, by young man institute fanaticism high praise.And different modern womans can therefrom find and show oneself
Individual character, the karat gold jewellery for being suitble to different occasions.The protean moulding of karat gold jewellery, unique individual character bright characteristics, often by fashion
Personage is used for fully showing charisma.In American-European, Japan and other countries and area, the changeful karat gold jewellery of color gradually at
For fashion, and as people shows self, shows being preferably selected for individual character.Some styles are modish, good luster, technique are fine
Brand karat gold jewellery even it is more taller than the price of solid gold jewelry.
In recent years, domestic karat gold jewellery scientific and technological content was higher and higher, had cultivated a large amount of outstanding Jewelry Design teachers and jewellery
With lapicide, electroplating technology work, processing and fabricating level is continuously improved, and technique is more and more exquisite, careful, or using whole polishing
Technology, or be combined with sandblasting, pierced process, or mirror carves skin texture or engraves smooth lines on smooth surface, to add
No matter the three-dimensional stereopsis of strong jewellery and hierarchical space sense, have distinguished effect in terms of which angle.
On the one hand the addition of karat gold ornaments alloy element improves the hardness of gold ornaments, to be suitble to make various gemmy head
On the other hand decorations can also change the color of karat gold ornaments by changing the ratio of the type of its ingredient.The color of karat gold in addition to
Yellow, white also have the type of grey with outside red.Traditionally, the bule gold formed when iron is added in gold just has
There is the color and luster of grey.But regrettably, the addition of iron can form intermetallic compound.But due to the generation of ordering
With the generation of stress, which is extremely easy brittle failure at room temperature.It is easy to break just as dried firewood when serious, it does not show tough
The mechanical property of the excellent precious metal alloys of plasticity.This brittle fracture and the generation of crackle are not only in jewellery manufacturing process
It will produce, can also occur suddenly during the use of jewellery.Frequent can find many places after jewellery manufacturing shop is cast
Crackle, and incision position does not have any plastic deformation, and typical brittle fracture is presented, and factory's daily life of a family is stranded by this problem
It disturbs.The perception of such material is not only affected, the market sales volume and the marketing of such material are also seriously reduced.
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 evolution, 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 forms 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 larger 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 have the karat gold material and its technology of preparing of independent intellectual property right, for enhancing
The competitiveness of China's jewelry and decoration industry will have the function of very positive.
Invention content
The purpose of the present invention is to overcome the deficiency in the prior art, provides with extremely low work hardening rate and the 14K of resistance to brittle failure ashes
Gold alloy and its technique.
To achieve the goals above, the present invention adopts the following technical scheme that：
With extremely low work hardening rate and the grey gold alloys of the 14K of resistance to brittle failure and its technique.By weight percentage, the composition of alloy
For Li:0.4-0.6wt.%,B:0.3-0.5wt.%,Mg:2.1-2.8wt.%,Sb:1.2-1.5wt.%,Co:8.0-15.0wt.%,
Fe:10.0-12.0wt.%,Au:58.0-59.0wt.%, surplus are silver.
The above-mentioned preparation method with extremely low work hardening rate and the grey gold alloys of the 14K of resistance to brittle failure and its technique, including such as
Lower 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 1200 degree when melting, is leaned on
Efco-Northrup furnace electromagnetic agitation is uniform;1 minute being kept the temperature at 1200 degree after stirring evenly and being cast come out of the stove;Billon casting is using straight
The punching block of diameter 50-100mm, and cooled down by the way of water cooling.The ingot casting of gained is rolled at room temperature, under every time is rolled
Amount is 30-40%;It is 380 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.5 hour;Material, which is finally rolled into thickness, is
The golden plate of 10-20mm;In jewellery forming process, needs to carry out intermediate annealing process, eliminate 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 and luster of grey.But it is unluckily
It is that the addition of iron can form intermetallic compound.But due to the generation of the generation of ordering and stress, the material is at room temperature
Extremely it is easy brittle failure.It is easy to break just as dried firewood when serious, the mechanics of the excellent precious metal alloys of toughness plasticity is not shown
Performance.This brittle fracture and the generation of crackle not only will produce in jewellery manufacturing process, during the use of jewellery
Also can occur suddenly.The frequent crackle that many places can be found after jewellery manufacturing shop is cast, and incision position does not have any modeling
Property deformation, typical brittle fracture is presented, factory's daily life of a family is perplexed by this problem.Not only affect the sight of such material
Sense, also seriously reduces the market sales volume and the marketing of such material.This patent is by advanced materialogy technology to K ashes
Gold has carried out multi-faceted innovation and raising.That is, it solves the face that the golden material of field of jewelry K ashes is difficult to take into account
The present situation that color, corrosion resistance and processing performance cannot obtain simultaneously.
（2）The alloy has close to eutectic structure, possesses best etch resistant properties and Deformation Properties of Al.After casting
The generation of primary phase, and thinning microstructure can be efficiently controlled.In addition, the great advantage of the production technology of the alloy is technological process
It is short, energy and material consumption is low, tissue be easy to control.As alloy content is in the variation of optimization range, the mechanical performance of the alloy can be with
Significantly adjusted.Meanwhile the alloy due to liquidus curve it is relatively low, thus be suitable for casting.Since crystal grain obtains carefully
Hot cracking tendency is big when changing, and solving solution casting, casting cavity and loose apparent product yield rate is low waits technical barriers, because
And have a vast market foreground.
（3）The corrosion potential of the alloy thus is being subjected to corrosive environment than the corrosion potential higher of traditional grey karat gold
The lower material can show lower corrosion rate.Meanwhile the corrosion current of the material is the 0.2- of traditional grey karat gold
0.4 or so.The salt spray resistance of the grey karat gold, resistance to sulfur dioxide and hot resistance test performance are better than traditional karat gold, corrosion-resistant
There are clear superiorities for ability.Selection, which is added to the alloying element in alloy, to form passivating film on surface, to ambient enviroment
Corrosion plays a protective role.This film is in different media, since unpolarizing is as a result, different resistance to show
Corrosive nature also relatively stablizes the corrosion resistance of strong acid, strong basicity sweat.The jewellery of the material preparation are worn in normal human body
No generation metachromatism in lower 10 years of environment.
（4）At room temperature, which maintains 220-240MPa, elongation percentage 50-60% with the tensile strength of K ash gold.
The material carries out tube reducing operation at room temperature, such as drawing or swages, and has extremely low work hardening rate.In room temperature diameter
In the case of reducing 50%, intensity increases only 10-15% caused by processing hardening phenomenon.Thus needing adding for large deformation
Under the conditions of work, which can greatly reduce the resistance of deformation of process without carrying out intermediate annealing, reduce energy demand.
Specific implementation mode
Embodiment 1
With extremely low work hardening rate and the grey gold alloys of the 14K of resistance to brittle failure and its technique.By weight percentage, the composition of alloy
For Li:0.4wt.%,B:0.3wt.%,Mg:2.1wt.%,Sb:1.2wt.%,Co:8.0wt.%,Fe:10.0wt.%,Au:
58.0wt.%, surplus are silver.It is above-mentioned that there is the grey gold alloy of extremely low work hardening rate and the 14K of resistance to brittle failure and its technique, including such as
Lower 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 1200 degree when melting, is leaned on
Efco-Northrup furnace electromagnetic agitation is uniform;1 minute being kept the temperature at 1200 degree after stirring evenly and being cast come out of the stove;Billon casting is using straight
The punching block of diameter 50-100mm, and cooled down by the way of water cooling.The ingot casting of gained is rolled at room temperature, under every time is rolled
Amount is 30-40%;It is 380 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.5 hour;Material, which is finally rolled into thickness, is
The golden plate of 10-20mm;In jewellery forming process, needs to carry out intermediate annealing process, eliminate the stress in process;Its
In, homogenization temperature is 350 degree, and the time is 1-2 hours.
The material solves the golden material of field of jewelry K ashes and is difficult to the color taken into account, and corrosion resistance and processing performance cannot
The present situation obtained simultaneously.The alloy has close to eutectic structure, possesses best etch resistant properties and Deformation Properties of Al.It is casting
The generation of primary phase, and thinning microstructure can be efficiently controlled afterwards.With the alloy since liquidus curve is relatively low, thus it is suitable for casting
It makes.Selection, which is added to the alloying element in alloy, to form passivating film on surface, make to play protection to ambient enviroment corrosion
With.This film also relatively stablizes the corrosion resistance of strong acid, strong basicity sweat.The jewellery of the material preparation are worn in normal human body
No generation metachromatism in lower 10 years of environment.The material carries out tube reducing operation at room temperature, such as drawing or swages, and has
Extremely low work hardening rate.In the case where room temperature diameter reduces 50%, intensity increases only caused by processing hardening phenomenon
There is 10-15%.Thus under the processing conditions for needing large deformation, the material can greatly reduce the resistance of deformation of process and
Without carrying out intermediate annealing, energy demand is reduced.
Embodiment 2
With extremely low work hardening rate and the grey gold alloys of the 14K of resistance to brittle failure and its technique.By weight percentage, the composition of alloy
For Li:0.6wt.%,B:0.5wt.%,Mg:2.8wt.%,Sb:1.5wt.%,Co:15.0wt.%,Fe:12.0wt.%,Au:
59.0wt.%, surplus are silver.It is above-mentioned that there is the grey gold alloy of extremely low work hardening rate and the 14K of resistance to brittle failure and its technique, including such as
Lower 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 1200 degree when melting, is leaned on
Efco-Northrup furnace electromagnetic agitation is uniform;1 minute being kept the temperature at 1200 degree after stirring evenly and being cast come out of the stove;Billon casting is using straight
The punching block of diameter 50-100mm, and cooled down by the way of water cooling.The ingot casting of gained is rolled at room temperature, under every time is rolled
Amount is 30-40%;It is 380 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.5 hour;Material, which is finally rolled into thickness, is
The golden plate of 10-20mm;In jewellery forming process, needs to carry out intermediate annealing process, eliminate the stress in process;Its
In, homogenization temperature is 350 degree, and the time is 1-2 hours.
The material solves the golden material of field of jewelry K ashes and is difficult to the color taken into account, and corrosion resistance and processing performance cannot
The present situation obtained simultaneously.The alloy has close to eutectic structure, possesses best etch resistant properties and Deformation Properties of Al.It is casting
The generation of primary phase, and thinning microstructure can be efficiently controlled afterwards.With the alloy since liquidus curve is relatively low, thus it is suitable for casting
It makes.Selection, which is added to the alloying element in alloy, to form passivating film on surface, make to play protection to ambient enviroment corrosion
With.This film also relatively stablizes the corrosion resistance of strong acid, strong basicity sweat.The jewellery of the material preparation are worn in normal human body
No generation metachromatism in lower 10 years of environment.The material carries out tube reducing operation at room temperature, such as drawing or swages, and has
Extremely low work hardening rate.In the case where room temperature diameter reduces 50%, intensity increases only caused by processing hardening phenomenon
There is 10-15%.Thus under the processing conditions for needing large deformation, the material can greatly reduce the resistance of deformation of process and
Without carrying out intermediate annealing, energy demand is reduced.
Embodiment 3
With extremely low work hardening rate and the grey gold alloys of the 14K of resistance to brittle failure and its technique.By weight percentage, the composition of alloy
For Li:0.5wt.%,B:0.4wt.%,Mg:2.5wt.%,Sb:1.3wt.%,Co:8.5wt.%,Fe:11.0wt.%,Au:
58.0wt.%, surplus are silver.It is above-mentioned that there is the grey gold alloy of extremely low work hardening rate and the 14K of resistance to brittle failure and its technique, including such as
Lower 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 1200 degree when melting, is leaned on
Efco-Northrup furnace electromagnetic agitation is uniform;1 minute being kept the temperature at 1200 degree after stirring evenly and being cast come out of the stove;Billon casting is using straight
The punching block of diameter 50-100mm, and cooled down by the way of water cooling.The ingot casting of gained is rolled at room temperature, under every time is rolled
Amount is 30-40%;It is 380 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.5 hour;Material, which is finally rolled into thickness, is
The golden plate of 10-20mm;In jewellery forming process, needs to carry out intermediate annealing process, eliminate the stress in process;Its
In, homogenization temperature is 350 degree, and the time is 1-2 hours.
The material solves the golden material of field of jewelry K ashes and is difficult to the color taken into account, and corrosion resistance and processing performance cannot
The present situation obtained simultaneously.The alloy has close to eutectic structure, possesses best etch resistant properties and Deformation Properties of Al.It is casting
The generation of primary phase, and thinning microstructure can be efficiently controlled afterwards.With the alloy since liquidus curve is relatively low, thus it is suitable for casting
It makes.Selection, which is added to the alloying element in alloy, to form passivating film on surface, make to play protection to ambient enviroment corrosion
With.This film also relatively stablizes the corrosion resistance of strong acid, strong basicity sweat.The jewellery of the material preparation are worn in normal human body
No generation metachromatism in lower 10 years of environment.The material carries out tube reducing operation at room temperature, such as drawing or swages, and has
Extremely low work hardening rate.In the case where room temperature diameter reduces 50%, intensity increases only caused by processing hardening phenomenon
There is 10-15%.Thus under the processing conditions for needing large deformation, the material can greatly reduce the resistance of deformation of process and
Without carrying out intermediate annealing, energy demand is reduced.
Claims (3)
1. with extremely low work hardening rate and the grey gold alloys of the 14K of resistance to brittle failure and its technique；By weight percentage, the group of alloy
As Li:0.4-0.6wt.%,B:0.3-0.5wt.%,Mg:2.1-2.8wt.%,Sb:1.2-1.5wt.%,Co:8.0-
15.0wt.%,Fe:10.0-12.0wt.%,Au:58.0-59.0wt.%, surplus are silver.
2. with extremely low work hardening rate and the grey gold alloys of the 14K of resistance to brittle failure and its technique described in claim 1, it is characterised in that
Including following smelting step：As above the raw material matched is added in the electric induction furnace of argon gas protection, and uses graphite crucible;Gold
It is protected using the argon gas of low discharge after belonging to fusing, big air-flow is avoided to make the serious scaling loss of alloying element;It is protected at 1200 degree when melting
Temperature 10 minutes is uniform by Efco-Northrup furnace electromagnetic agitation;1 minute being kept the temperature at 1200 degree after stirring evenly and being cast come out of the stove;Jin He
Gold casting uses the punching block of diameter 50-100mm, and is cooled down by the way of water cooling.
3. existing according to having the grey gold alloy of extremely low work hardening rate and the 14K of resistance to brittle failure and its technique, feature described in claim 1
In 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 every to roll twice
Intermediate anneal temperature is 380 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 350
Degree, time are 1-2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810810586.6A CN108531763A (en) | 2018-07-23 | 2018-07-23 | With extremely low work hardening rate and the grey gold alloys of the 14K of resistance to brittle failure and its technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810810586.6A CN108531763A (en) | 2018-07-23 | 2018-07-23 | With extremely low work hardening rate and the grey gold alloys of the 14K of resistance to brittle failure and its technique |
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| Publication Number | Publication Date |
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| CN108531763A true CN108531763A (en) | 2018-09-14 |
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ID=63488152
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| CN201810810586.6A Withdrawn CN108531763A (en) | 2018-07-23 | 2018-07-23 | With extremely low work hardening rate and the grey gold alloys of the 14K of resistance to brittle failure and its technique |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055437A (en) * | 2019-05-16 | 2019-07-26 | 杭州辰卓科技有限公司 | One kind having the corrosion-resistant billon of resistance to brittle failure of this spot effect 14K and its technique |
-
2018
- 2018-07-23 CN CN201810810586.6A patent/CN108531763A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055437A (en) * | 2019-05-16 | 2019-07-26 | 杭州辰卓科技有限公司 | One kind having the corrosion-resistant billon of resistance to brittle failure of this spot effect 14K and its technique |
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Application publication date: 20180914 |