CN108754208A - The red gold billons containing Li and Sn of 14K with inhibition low-temperature brittle fracture - Google Patents
The red gold billons containing Li and Sn of 14K with inhibition low-temperature brittle fracture Download PDFInfo
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- CN108754208A CN108754208A CN201810655306.9A CN201810655306A CN108754208A CN 108754208 A CN108754208 A CN 108754208A CN 201810655306 A CN201810655306 A CN 201810655306A CN 108754208 A CN108754208 A CN 108754208A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- 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
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- 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 the red gold billons containing Li and Sn of 14K with inhibition low-temperature brittle fracture.According to weight percent, the ingredient of the alloy is:Li:0.2-0.4wt.%,V:0.4-0.6wt.%,Sn:1.5-1.8wt.%,Al:2.0-2.4wt.%,Ag:12.0-20.0wt.%,Au:57.0-59.0wt.%, surplus are copper.The patent, which solves the red gold utensil materials of current 14K, has low-temperature brittle fracture, and present situation backward in technique.The development bottleneck of the jewellery red golden materials of 14K is broken through by the innovation and optimization of alloying component.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
Gold is a kind of precious metal, is one of the metal that the mankind have found and develop and use earliest.It is make jewellery and
The important source material of coin, and be the important stockpile of country, element is famous with the king of metal.It is not considered only as fine and rich
Symbol, but also with its distinctive value, the life brought benefit to the mankind.One important applied field of gold is decoration material
Material, including jewellery etc..Gold can be also used for daily necessities, such as gold-plated clock and watch, belt fastener, lighter, pen.Clock and watch kingdom is auspicious
Scholar country is little, but its ornaments industry is measured with gold up to 40 tons or so, wherein 95% is used in watchmaking every year.A Japanese only hand
1 year consumption gold salt of Watch Factory is equivalent to 680 kilograms of gold of consumption just up to 1 ton.The purposes of gold is more and more wider, and consumption is also more next
It is bigger, thus cause especially deeply concerned and keen interest of the countries in the world to gold.
Soft gold is easily deformed, and is also easy to wear.Therefore, people begin to attempt to be added in proof gold a small amount of
Other alloying elements increase the hardness of gold, wherein silver, copper, zinc etc., which are all existing frequently-used are added in gold, increases intensity
With the metal of toughness.Add the gold of alloying element, that is, billon.Determine the position processed of gold content in billon in English
It is Karat, it also can abbreviation K by head word.Therefore, ornamental billon is also known as karat gold.
The content for wanting to calculate gold in each karat gold, can use the number divided by 24 before K, what is obtained is exactly gold
Content in this synthesis metal.For 18K gold, 18 ÷ 24=0.75, that is, gold content in 18K gold are 75%.
There are many color of present karat gold, and gold with other metals when carrying out alloying, as long as the alloying of variety classes and content is added
Element just forms the K gold of different colours.
The color of billon has prodigious change as the selection of alloying element is different.When copper is added in gold, just shape
At red gold;Silver is added, nickel or palladium just form platinum.When forming red gold, 25% electricity is added in 75% gold
It is red gold to solve fine copper just, and the 18K gold colors formed under this ratio are most red.If silver is added, color can shoal, and be added more
Silver, red will be more shallow.In 18K gold, silver-colored content increases to 10%, when copper retreats to 15% or so, and color will compare
More inclined powder, also just becomes rose gold.Rose gold is a kind of most popular color of current furnishing fields, including jewellery and electronics
The appearance of product.After iPhone6s releases rose gold version, many manufacturers also start to be added on oneself product one after another
The color matching of rose gold attracts the user, rose gold to have become the mainstream color of electronic product.
But presently, the red golden materials of the 18K of rose gold are easy to that brittle fracture occurs, when serious just as dried firewood
It is easy to break, the mechanical property of the excellent precious metal alloys of toughness plasticity is not shown.This brittle fracture and the generation of crackle
It not only will produce in jewellery manufacturing process, can also occur suddenly during the use of jewellery.Frequent manufactures vehicle in jewellery
Between, the crackle of many places can be found after 18K red golden casts, and incision position does not have any plastic deformation, presents typical
Brittle fracture.Practical production experience shows that this crackle often occurs in common 18K, 14K and 10K red gold alloys, especially
The problem of being the embrittlement in 18K red gold alloys, is especially prominent, and factory's daily life of a family is perplexed by this problem.
Since the red gold of common 18K, the red gold of 14K and the red gold of 10K can be all formed in the composition range of sequence structure, because
In cooling procedure in this cooling procedure after casting, or after welding, or even on edge stone in the cooling procedure of sealing wax,
The brittleness for being likely to be formed with sequence structure and increasing material so that in carrying out casting last handling process to gadget, slightly
Gadget may be caused to be broken by external force or impact, very big puzzlement and difficulty are brought to jewellery production.
The low-temperature brittle fracture of the red gold of 14K has been the inevitable problem of field of jewelry, for a long time enterprise both domestic and external and
Research institution has carried out many trials and has studied very much.But presently, the brittle failure problem of the red gold of 14K can only be used indirect
Method solve, such as accelerate the setting rate of casting, using the technique etc. deformed after homogenizing again.But these modes
Can not fundamentally thorough solution be provided for the low-temperature brittle fracture of the red gold of 14K, after prolonged use 14K it is red gold still
Brittle fracture can occur.It can be by the thermodynamics and kinetics means of bottom to alloy by advanced design of material technology
Material is innovated, and has prodigious market value to the solution and industrialization of the low-temperature brittle fracture problem of the red gold of 14K.It faces
The domestic and international market competition being growing more intense, it is necessary to which paces of accelerating restructuring, this is not only China's jewellery industry existence and hair
The needs of exhibition and the development trend of world today's related field.Briefly, it is broken through by technological innovation and optimization design
It restricts the red gold productions of China 14K and uses development bottleneck.
Invention content
The purpose of the present invention is to overcome the deficiency in the prior art, provides a kind of red gold use of the 14K with inhibition low-temperature brittle fracture
Containing Li and Sn billons.
To achieve the goals above, the present invention adopts the following technical scheme that：
It is a kind of that there is the red gold billons containing Li and Sn of the 14K of inhibition low-temperature brittle fracture.By weight percentage, the group of alloy becomes
Li:0.2-0.4wt.%,V:0.4-0.6wt.%,Sn:1.5-1.8wt.%,Al:2.0-2.4wt.%,Ag:12.0-20.0wt.%,
Au:57.0-59.0wt.%, surplus are copper.
It is above-mentioned that there is the red gold billons containing Li and Sn of the 14K of inhibition low-temperature brittle fracture.Preparation method, including walk as follows
Suddenly：As above the raw material matched is added in the electric induction furnace of argon gas protection, and uses graphite crucible;Using low after metal molten
The argon gas of flow is protected, and big air-flow is avoided to make the serious scaling loss of alloying element;10 minutes are kept the temperature at 1050 degree when melting, leans on high frequency
Induction 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
The punching block of 100-200mm, 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 680 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 800 degree, and the time is 1-2 hours.
Compared with prior art, the present invention has the advantages that：
（1）The red gold of traditional 14K needs to carry out medium temperature hot forging processing before rolling after Homogenization Treatments.But due in ingot casting
Portion is of poor quality, and remaining has oxide to be mingled with, and when forging will generate micro-crack at oxide inclusion.In forging process, micro-crack
It further expands, causes lumber recovery low.The billon of present patent application protection makes crystal grain be refined.In addition, the alloy has
Low liquid-solid phase solidification temperature range, hot cracking tendency is big when can solve to cast, casting cavity and loose apparent product yield rate
Low technical barrier.Smelting processing method is simple, and production cost is relatively low, reduces to equipment requirement.
（2）The common red gold of 14K can be formed with sequence structure under common cooling velocity, thus result in red gold and close
The structural fragility of gold.In common billon composition range, cooling in cooling procedure after casting or after welding
In the process, or even on edge stone in the cooling procedure of sealing wax, it can all be formed with sequence structure and increase the brittleness of material so that
Gadget is carried out in casting last handling process, slightly gadget may be caused to be broken by external force or impact, band is produced to jewellery
Come very big puzzlement and difficulty.The material new design of this alloy can significantly drop during cooling down or later use
The low process of ordering, thus can be during processing and use（In 15-20）It is avoided completely because of the orderly of alloy
Material brittle failure caused by change process.
（3）The aerial corrosion resistance of the alloy belongs to compared with stabilizing material, belongs to stable proximate matter in weak acid, weak base sweat
Material, corrosion resistance is by being added the higher alloying element of thermodynamic stability.In corrosive environment, the protective film of passivation can be formed,
This film is in different media, since unpolarizing is as a result, to show different corrosion resistances, to strong acid,
The corrosion resistance of strong basicity sweat is also relatively stablized.It is contemplated that the implementation and industrialization of the material obtain excellent economy after all
Benefit and social benefit.
Specific implementation mode
Embodiment 1
It is a kind of that there is the red gold billons containing Li and Sn of the 14K of inhibition low-temperature brittle fracture.By weight percentage, the group of alloy becomes
Li:0.2wt.%,V:0.4wt.%,Sn:1.5wt.%,Al:2.0wt.%,Ag:12.0wt.%,Au:57.0wt.%, surplus are copper.
It is above-mentioned that there is the preparation method for inhibiting the red golden billons containing Li and Sn of the 14K of low-temperature brittle fracture, include the following steps：To as above it match
The raw material of ratio is added in the electric induction furnace of argon gas protection, and uses graphite crucible;The argon gas of low discharge is used after metal molten
Protection, avoids big air-flow from making the serious scaling loss of alloying element;10 minutes are kept the temperature at 1050 degree when melting, leans on Efco-Northrup furnace electromagnetism
It stirs evenly;1 minute being kept the temperature at 1250 degree after stirring evenly and being cast come out of the stove;Billon casting is using diameter 100-200mm's
Punching block, 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 680 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.5 hour;Material is finally rolled into the gold that thickness is 10-20mm
Plate;In jewellery forming process, needs to carry out intermediate annealing process, eliminate the stress in process;Wherein, homogenization temperature
It it is 800 degree, the time is 1-2 hours.
The billon of present patent application protection makes crystal grain be refined.In addition, the alloy has low liquid-solid phase solidification temperature
Range is spent, hot cracking tendency is big when can solve to cast, casting cavity equal technical barriers low with loose apparent product yield rate.It smelts
Processing method is simple, and production cost is relatively low, reduces to equipment requirement.The material new design of this alloy can be cold in cooling
But the process of ordering or during later use is greatly reduced, thus can be during processing and use（15-20
In year）It is avoided completely because of material brittle failure caused by the process of ordering of alloy.The aerial corrosion resistance of the alloy belong to compared with
Stabilizing material belongs to stable type material in weak acid, weak base sweat, and corrosion resistance is by being added the higher alloy of thermodynamic stability
Element.In corrosive environment, the protective film of passivation can be formed, this film is in different media, due to the knot of unpolarizing
Fruit also relatively stablizes the corrosion resistance of strong acid, strong basicity sweat to show different corrosion resistances.It is contemplated that should
The implementation and industrialization of material obtain excellent economic benefit and social benefit after all.
Embodiment 2
It is a kind of that there is the red gold billons containing Li and Sn of the 14K of inhibition low-temperature brittle fracture.By weight percentage, the group of alloy becomes
Li:0.4wt.%,V:0.6wt.%,Sn:1.8wt.%,Al:2.4wt.%,Ag:20.0wt.%,Au:59.0wt.%, surplus are copper.
It is above-mentioned that there is the preparation method for inhibiting the red golden billons containing Li and Sn of the 14K of low-temperature brittle fracture, include the following steps：To as above it match
The raw material of ratio is added in the electric induction furnace of argon gas protection, and uses graphite crucible;The argon gas of low discharge is used after metal molten
Protection, avoids big air-flow from making the serious scaling loss of alloying element;10 minutes are kept the temperature at 1050 degree when melting, leans on Efco-Northrup furnace electromagnetism
It stirs evenly;1 minute being kept the temperature at 1250 degree after stirring evenly and being cast come out of the stove;Billon casting is using diameter 100-200mm's
Punching block, 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 680 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.5 hour;Material is finally rolled into the gold that thickness is 10-20mm
Plate;In jewellery forming process, needs to carry out intermediate annealing process, eliminate the stress in process;Wherein, homogenization temperature
It it is 800 degree, the time is 1-2 hours.
The billon of present patent application protection makes crystal grain be refined.In addition, the alloy has low liquid-solid phase solidification temperature
Range is spent, hot cracking tendency is big when can solve to cast, casting cavity equal technical barriers low with loose apparent product yield rate.It smelts
Processing method is simple, and production cost is relatively low, reduces to equipment requirement.The material new design of this alloy can be cold in cooling
But the process of ordering or during later use is greatly reduced, thus can be during processing and use（15-20
In year）It is avoided completely because of material brittle failure caused by the process of ordering of alloy.The aerial corrosion resistance of the alloy belong to compared with
Stabilizing material belongs to stable type material in weak acid, weak base sweat, and corrosion resistance is by being added the higher alloy of thermodynamic stability
Element.In corrosive environment, the protective film of passivation can be formed, this film is in different media, due to the knot of unpolarizing
Fruit also relatively stablizes the corrosion resistance of strong acid, strong basicity sweat to show different corrosion resistances.It is contemplated that should
The implementation and industrialization of material obtain excellent economic benefit and social benefit after all.
Embodiment 3
It is a kind of that there is the red gold billons containing Li and Sn of the 14K of inhibition low-temperature brittle fracture.By weight percentage, the group of alloy becomes
Li:0.3wt.%,V:0.5wt.%,Sn:1.6wt.%,Al:2.2wt.%,Ag:15.0wt.%,Au:58.0wt.%, surplus are copper.
It is above-mentioned that there is the preparation method for inhibiting the red golden billons containing Li and Sn of the 14K of low-temperature brittle fracture, include the following steps：To as above it match
The raw material of ratio is added in the electric induction furnace of argon gas protection, and uses graphite crucible;The argon gas of low discharge is used after metal molten
Protection, avoids big air-flow from making the serious scaling loss of alloying element;10 minutes are kept the temperature at 1050 degree when melting, leans on Efco-Northrup furnace electromagnetism
It stirs evenly;1 minute being kept the temperature at 1250 degree after stirring evenly and being cast come out of the stove;Billon casting is using diameter 100-200mm's
Punching block, 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 680 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.5 hour;Material is finally rolled into the gold that thickness is 10-20mm
Plate;In jewellery forming process, needs to carry out intermediate annealing process, eliminate the stress in process;Wherein, homogenization temperature
It it is 800 degree, the time is 1-2 hours.
The billon of present patent application protection makes crystal grain be refined.In addition, the alloy has low liquid-solid phase solidification temperature
Range is spent, hot cracking tendency is big when can solve to cast, casting cavity equal technical barriers low with loose apparent product yield rate.It smelts
Processing method is simple, and production cost is relatively low, reduces to equipment requirement.The material new design of this alloy can be cold in cooling
But the process of ordering or during later use is greatly reduced, thus can be during processing and use（15-20
In year）It is avoided completely because of material brittle failure caused by the process of ordering of alloy.The aerial corrosion resistance of the alloy belong to compared with
Stabilizing material belongs to stable type material in weak acid, weak base sweat, and corrosion resistance is by being added the higher alloy of thermodynamic stability
Element.In corrosive environment, the protective film of passivation can be formed, this film is in different media, due to the knot of unpolarizing
Fruit also relatively stablizes the corrosion resistance of strong acid, strong basicity sweat to show different corrosion resistances.It is contemplated that should
The implementation and industrialization of material obtain excellent economic benefit and social benefit after all.
Claims (3)
1. a kind of having the red gold billons containing Li and Sn of the 14K of inhibition low-temperature brittle fracture；According to weight percent, the alloy at
It is divided into:Li:0.2-0.4wt.%,V:0.4-0.6wt.%,Sn:1.5-1.8wt.%,Al:2.0-2.4wt.%,Ag:12.0-
20.0wt.%,Au:57.0-59.0wt.%, surplus are copper.
Inhibit the red gold billons containing Li and Sn of the 14K of low-temperature brittle fracture 2. having described in claim 1, it is characterised in that including such as
Lower smelting step：As above the raw material matched is added in the electric induction furnace of argon gas protection, and uses graphite crucible;Metal molten
It uses the argon gas of low discharge to protect afterwards, big air-flow is avoided to make the serious scaling loss of alloying element;10 points are kept the temperature when melting at 1050 degree
Clock, it is uniform by Efco-Northrup furnace electromagnetic agitation;1 minute being kept the temperature at 1250 degree after stirring evenly and being cast come out of the stove;Billon is cast
Using the punching block of diameter 100-200mm, and cooled down by the way of water cooling.
3. inhibiting the red gold billons containing Li and Sn of the 14K of low-temperature brittle fracture according to having described in claim 1, it is characterised in that include
Step is used as follows：The ingot casting of gained is rolled at room temperature, it is 30-40% that every time, which rolls lower amount,;In after rolling twice
Between annealing temperature be 680 degree, heat preservation 0.5 hour;Material is finally rolled into the golden plate that thickness is 10-20mm;It is molded in jewellery
In the process, it needs to carry out intermediate annealing process, eliminates the stress in process;Wherein, homogenization temperature is 800 degree, the time
It is 1-2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810655306.9A CN108754208A (en) | 2018-06-23 | 2018-06-23 | The red gold billons containing Li and Sn of 14K with inhibition low-temperature brittle fracture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810655306.9A CN108754208A (en) | 2018-06-23 | 2018-06-23 | The red gold billons containing Li and Sn of 14K with inhibition low-temperature brittle fracture |
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| Publication Number | Publication Date |
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| CN108754208A true CN108754208A (en) | 2018-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810655306.9A Withdrawn CN108754208A (en) | 2018-06-23 | 2018-06-23 | The red gold billons containing Li and Sn of 14K with inhibition low-temperature brittle fracture |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111187940A (en) * | 2020-01-14 | 2020-05-22 | 深圳市鸿亨珠宝首饰有限公司 | Gold alloy, method for manufacturing spring by using gold alloy and manufactured spring |
-
2018
- 2018-06-23 CN CN201810655306.9A patent/CN108754208A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111187940A (en) * | 2020-01-14 | 2020-05-22 | 深圳市鸿亨珠宝首饰有限公司 | Gold alloy, method for manufacturing spring by using gold alloy and manufactured spring |
| CN111187940B (en) * | 2020-01-14 | 2021-06-01 | 深圳市鸿亨珠宝首饰有限公司 | Gold alloy, method for manufacturing spring by using gold alloy and manufactured spring |
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Application publication date: 20181106 |
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