CN108842088A - The anticorrosive yellow low silver content alloy of seedling silver jewellery high rigidity and its technique - Google Patents
The anticorrosive yellow low silver content alloy of seedling silver jewellery high rigidity and its technique Download PDFInfo
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- CN108842088A CN108842088A CN201810889184.XA CN201810889184A CN108842088A CN 108842088 A CN108842088 A CN 108842088A CN 201810889184 A CN201810889184 A CN 201810889184A CN 108842088 A CN108842088 A CN 108842088A
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- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C27/00—Making jewellery or other personal adornments
- A44C27/001—Materials for manufacturing jewellery
- A44C27/002—Metallic materials
- A44C27/003—Metallic alloys
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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
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/06—Alloys containing less than 50% by weight of each constituent containing zinc
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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
- C22C5/06—Alloys based on silver
- C22C5/08—Alloys based on silver with copper as the next major constituent
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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
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
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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 anticorrosive yellow low silver content alloy of seedling silver jewellery high rigidity and its techniques.According to weight percent, the ingredient of the alloy is:P:0.3-0.5wt.%,C:0.2-0.4wt.%,Li:0.5-0.8wt.%,W:0.3-0.5wt.%,Y:1.0-1.5wt.%,Zn:8.0-1.0wt.%,Ni:5.0-8.0wt.%,Ag:40.0-50.0wt.%, surplus are copper.The material provides a kind of solution of materialogy for China's seedling silver alloy, and the color of yellow can be had by not only making seedling silver products after processing, but also the alloy has excellent high rigidity performance.The implementation and industrialization of the material can effectively push the demand that China's jewellery industry product updates and industry upgrades, and can obtain plentiful and substantial economic gain and social benefit while solving industry problems.
Description
Technical field
The present invention relates to technical field of alloy, specifically, being related to a kind of silver alloy.
Background technique
Fine silver price in noble metal is relatively low, because have good ductility, it is soft can be processed into it is various
Form is just liked by people since ancient times, and is widely used in manufacture jewellery, tableware and various ornaments.Fine silver matter is soft, though
Convenient for the processing of traditional ornaments, but it is unfavorable for embedding gem.And since hardness is low, after ornaments experience wear, surface can be generated carefully
Small scratch, declines surface gloss, influences beauty.In order to overcome these disadvantages of fine silver, people are added various in silver
Alloying element come improve silver mechanics and other performance, which forms silver alloy.
Extremely a small amount of alloying element is added, 999 silver medals, 990 silver medals, 925 silver medals etc. are just produced.925 fine silver are argentiferous
The yellow gold of 92.5wt%.In order to reinforce the hardness of silver jeweleries, the copper of about 7.5wt% is added, so off-white silver color can be presented in 925 silver medals
Rather than the silvery white of conventional silver.925 Silver Jewelries show extremely beautiful metallic luster after polishing, and are provided with one
Fixed hardness, can embedding gem, be made into medium-to-high grade jewellery.There is American-European style with 925 Silver Jewelries that the design of 925 silver medals is made, slightly
It is rustic, bold, fashionable, it walks at the tip of fashion, also there is exquisite, fine type, be suitble to public taste.But due to alloying element
Content is few, and comparatively price is also more expensive for 925 silver medals.
Miao Yin is a kind of distinctive silver alloy of Miao ethnic group, generally addition copper-nickel alloy, nickel etc..Silver content is 20-60wt% in Miao Yin,
With good processing performance.Seedling Silver Jewelry was once a kind of form that Miao ethnic group hoards wealth, by pressure, it is few, the complexity such as carve, hug
Manual process various fancy are made, formed great national characters Miao ethnic group decorations.There is the popular this silver of many ethnic groups in Yunnan
Decorations, such as the finery, jewellery of Miao ethnic group also maintain the tradition of system silver by hand in Miao Zhai.Why popular seedling Silver Jewelry is, main to go back
It is to be its exquisite manufacture craft and unique jewellery pattern.The artistic characteristics showed in Miao ethnic group's silver jeweleries, and it is very frightened
People's.It wears silver jeweleries and is particular about to be mostly beauty in many Miao ethnic group areas.Miao Yin is forged into various technique jewellery and ornament, decoration
People's lives, more and more women like wearing seedling Silver Jewelry, and more and more ornaments of arranging in pairs or groups can select seedling silver-colored.
China metal surface process history is long, and manufacture skill is consummate, various in style, unique style.It is prepared using Tibetan silver
Jewellery and vessel, keep processing stage more and more finer.The progress of development and science and technology now with handicraft, uses tool
A variety of exploitations, the processing of ornaments is more and more exquisiter, on the basis of inheriting tradition in intension again there is new expression to release with Gan.
In conjunction with material itself the characteristics of, using process of surface treatment appropriate, impart the more appeal of Tibetan silver texture and performance
Power.
Silver is readily generated a kind of extremely poorly soluble silver salt when encountering hydrogen sulfide gas or sulphion in air, silver is in sky
As long as meeting the hydrogen sulfide gas or sulphion of several trillion to tens part per trillion in gas, vulcanization just is produced in silver surface
Silver.Because silver sulfide is grey black, with the aggravation of reaction, silver sulfide, which increases, to be thickened, silver surface color just gradually by
The last blackening of leucismus xanthochromia ash.The source of Air Hydrogen Sulfide is a variety of.It is the excrement of humans and animals first by bacterium point
A large amount of hydrogen sulfide are generated after solution, also generate hydrogen sulfide after the protein corruption in plant.In addition also contain sulphur in the sweat of people,
It can make in silver tarnish, especially urban air the hydrogen sulfide as caused by sewage and garbage emission when it and silverware contact more
It is surprising.
But regrettably, there is no form the colored silver system abundant as colored karat gold for seedling silver alloy at present
Column.Thus, silver jewellery in the market is white mostly, or the plated film coloured silk silver alloy of the method acquisition using ion plating.It is this
The alloy of type does not have enough corrosion resistances after use and changes colour, or leaks out matrix alloy because of abrasion and make
Sulphide staining is obtained to accelerate.With the arrival of seedling silver jewellery storm in recent years, seedling Silver Jewelry sells well street corner, and demand dramatically increases.
In terms of the technology of processing of ornament, the Silver Jewelry factory in China has fairly horizontal, and if any representing, current international jewellery are newest
The hollow electrotyping forming of technique, 3 D stereo vehicle flower;There is the full-automatic chain assembly line processed of leading domestic jewellery technology, precision is lost and poured
Cast assembly line;Also a little fashion skills such as gold, sandblasting, color plating.And the country produces the new seedling silver alloy product of the positive Devoting Major Efforts To Developing of family,
The inspection and challenge in market are met with brand and technology.
Summary of the invention
The purpose of the present invention is to overcome the deficiency in the prior art, provides the low silver of the anticorrosive yellow of seedling silver jewellery high rigidity and contains
Measure alloy and its technique.
To achieve the goals above, the present invention adopts the following technical scheme that：
The anticorrosive yellow low silver content alloy of seedling silver jewellery high rigidity and its technique.By weight percentage, the composition of alloy
For P:0.3-0.5wt.%,C:0.2-0.4wt.%,Li:0.5-0.8wt.%,W:0.3-0.5wt.%,Y:1.0-1.5wt.%,Zn:
8.0-1.0wt.%,Ni:5.0-8.0wt.%,Ag:40.0-50.0wt.%, surplus are copper.
The anticorrosive yellow low silver content alloy of above-mentioned seedling silver jewellery high rigidity and its technique, include the following steps：It will be as
The raw material of upper proportion is added in the electric induction furnace under ar gas environment, and uses graphite crucible;10 are kept the temperature at 1400 degree when melting
Minute, it is uniform by Efco-Northrup furnace electromagnetic agitation;1 minute, which is kept the temperature, at 1400 degree after mixing evenly and is cast comes out of the stove;Alloy casting
Cool down using the punching block of diameter 20-30mm, and by the way of water cooling.Resulting ingot casting is rolled at room temperature, per pass
It is secondary to roll lower amount for 20-30%;It is 420 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.4 hour;Finally material is rolled into
With a thickness of the alloy sheets of 10-20mm;It in jewellery forming process, needs to carry out vacuum annealing process, eliminates in process
Stress;Wherein, temperature is 400 degree, and the time is 0.6 hour；Finally during jewellery colour, need to carry out low-level oxidation behaviour
Make, 250 degree of temperature under atmospheric environment, the time is 0.4 hour.
Compared with prior art, the present invention has the advantages that：
（1）But regrettably, there is no form the colored silver system abundant as colored karat gold for seedling silver alloy at present
Column.Thus, silver jewellery in the market is white mostly, or the plated film coloured silk silver alloy of the method acquisition using ion plating.It is this
The alloy of type does not have enough corrosion resistances after use and changes colour, or leaks out matrix alloy because of abrasion and make
Sulphide staining is obtained to accelerate.With the arrival of seedling silver jewellery storm in recent years, seedling Silver Jewelry sells well street corner, and demand dramatically increases.
It is provided simultaneously with yellow gloss and the seedling silver to fade with excellent resistance to vulcanization is not emerged with alloy.Although China's jewellery material row
Industry is quickly grown, but due to starting evening, starting point is low, and also there is a big difference compared with world level on some sport technique segments.Row
Industry problem does not solve for a long time, not only affects the market sales volume and usage experience of Related product, also serious to limit this
Market occupancy volume of the class product in international scope.
（2）The characteristic color of matrix alloy phase is not leaned in the appearance of such alloy surface color instead of, by jewellery system
Final stage before standby completion passes through the technology of surface low-level oxidation, generates one layer of fine and close oxide skin(coating) on the surface of the material, can be with
So that jewellery surface has the color of needs.The seedling silver alloy of present patent application protection, has the gloss of yellow after processing,
And new oxide layer can also be formed on fresh matrix after surface layer is partially damaged, so that the color perception on surface layer
It is repaired.Thus, with self-repair function from the point of view of materialogy angle, and to have using the jewellery of silver alloy preparation
The ability remained unchanged for a long time.
（3）The silver alloy of present patent application protection has loose solidification temperature range, can achieve 860-920 degree.?
Freezing range is cast under conditions of being up to 60 degree, which has excellent high rigidity and crocking resistance.Existing market
On common anti-tarnishing silver alloy hardness of cast form it is relatively low, often less than 60HV.The silver alloy of present patent application protection, due to
The structure and optimizing components in materialogy have been carried out, thus there is high hardness, can achieve 90-100HV.Using the alloy
The silver jewellery of preparation will not leave any scratch even if nail surface is streaked.The silver jewellery prepared using the material, just
After being often used 4 years, surface is not also because what the hard object of contact was formed uses scratch.It thus ensure that alloy uses to the full extent
When surface perception and user experience.
（4）Present patent application protection yellow seedling silver alloy, hot-working and it is cold-formed after the alloy rolling or
Crystal grain is obviously whole in linear distribution by draw down, elongation after person's punching press.Alloy surface is not in crackle, the boundary of crystal grain
It there will not be cracking, keep fabulous mecystasis.Alloying element will not be in segregation in grain boundaries, and grain boundaries are intercrystalline
In conjunction with can be relatively strong, interface can be relatively low, thus has high plasticity, and elongation percentage can achieve 40% or so.Thus add in pressure
It can be subjected to 20% or more deformation per pass in work and do not have to intermediate annealing and be heat-treated.
（5）The aerial corrosion resistance of the alloy belongs to compared with stabilizing material, belongs to stable type in weak acid, weak base sweat
Material, corrosion resistance is by forming the higher alloying element oxidation film of thermodynamic stability.In corrosive environment, passivation can be formed
Protective film, this film is in different media, since unpolarizing is as a result, to showing different corrosion resistances,
It is also more stable to the corrosion resistance of strong acid, strong basicity sweat.Alloy corrosion rate under maritime environment is 2.510-4mm/
Year, thus all there is no apparent corrosion phenomenon using in 4 under relevant environment using the jewellery of material preparation.And it is traditional
Seedling silver jewellery will there is a phenomenon where apparent sulfide stainings after using 4 months.It is contemplated that the implementation and production of the material
Industryization will obtain excellent economic benefit and social benefit.
Specific embodiment
Embodiment 1
The anticorrosive yellow low silver content alloy of seedling silver jewellery high rigidity and its technique.By weight percentage, the composition of alloy
For P:0.3wt.%,C:0.2wt.%,Li:0.5wt.%,W:0.3wt.%,Y:1.0wt.%,Zn:8.0wt.%,Ni:5.0wt.%,
Ag:40.0wt.%, surplus are copper.The anticorrosive yellow low silver content alloy of above-mentioned seedling silver jewellery high rigidity and its technique, including
Following steps：As above the raw material matched is added in the electric induction furnace under ar gas environment, and uses graphite crucible;When melting
1400 degree keep the temperature 10 minutes, uniform by Efco-Northrup furnace electromagnetic agitation;It keeps the temperature 1 minute at 1400 degree after mixing evenly and pours and cast out
Furnace;Alloy casting uses the punching block of diameter 20-30mm, and is cooled down by the way of water cooling.By resulting ingot casting at room temperature into
Row rolling, rolling lower amount per pass is 20-30%;It is 420 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.4 hour;Finally
Material is rolled into the alloy sheets with a thickness of 10-20mm;It in jewellery forming process, needs to carry out vacuum annealing process, eliminates
Stress in process;Wherein, temperature is 400 degree, and the time is 0.6 hour；Finally jewellery colour during, need into
Row low-level oxidation operates, and 250 degree of temperature under atmospheric environment, the time is 0.4 hour.
The alloy has excellent casting character.It not only can be avoided the formation of shrinkage cavity in casting, it is also possible that casting
The tissue of part occurs in the form of equiax crystal, avoids the generation of dendrite.In addition, cast(ing) surface is bright and clean, without apparent sand hole,
The casting flaws such as cinder hole, stomata, connect between the rib of sieve intact, do not generate any contraction crack.The alloy is after processing
Have the gloss of yellow, and new oxide layer can also be formed on fresh matrix after surface layer is partially damaged, to make
The color perception for obtaining surface layer is repaired.The silver jewellery prepared using the alloy, will not leave surface is streaked even if nail
Any scratch.The silver jewellery prepared using the material, after normal use 4 years, surface is not also because contacting making for hard object formation
Use scratch.It thus ensure that the surface perception and user experience when alloy uses to the full extent.Using material preparation
Jewellery use in 4 under relevant environment does not all have apparent corrosion phenomenon.And traditional seedling silver jewellery is after using 4 months
It will there is a phenomenon where apparent sulfide stainings.
Embodiment 2
The anticorrosive yellow low silver content alloy of seedling silver jewellery high rigidity and its technique.By weight percentage, the composition of alloy
For P:0.5wt.%,C:0.4wt.%,Li:0.8wt.%,W:0.5wt.%,Y:1.5wt.%,Zn:1.0wt.%,Ni:8.0wt.%,
Ag:50.0wt.%, surplus are copper.The anticorrosive yellow low silver content alloy of above-mentioned seedling silver jewellery high rigidity and its technique, including
Following steps：As above the raw material matched is added in the electric induction furnace under ar gas environment, and uses graphite crucible;When melting
1400 degree keep the temperature 10 minutes, uniform by Efco-Northrup furnace electromagnetic agitation;It keeps the temperature 1 minute at 1400 degree after mixing evenly and pours and cast out
Furnace;Alloy casting uses the punching block of diameter 20-30mm, and is cooled down by the way of water cooling.By resulting ingot casting at room temperature into
Row rolling, rolling lower amount per pass is 20-30%;It is 420 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.4 hour;Finally
Material is rolled into the alloy sheets with a thickness of 10-20mm;It in jewellery forming process, needs to carry out vacuum annealing process, eliminates
Stress in process;Wherein, temperature is 400 degree, and the time is 0.6 hour；Finally jewellery colour during, need into
Row low-level oxidation operates, and 250 degree of temperature under atmospheric environment, the time is 0.4 hour.
The alloy has excellent casting character.It not only can be avoided the formation of shrinkage cavity in casting, it is also possible that casting
The tissue of part occurs in the form of equiax crystal, avoids the generation of dendrite.In addition, cast(ing) surface is bright and clean, without apparent sand hole,
The casting flaws such as cinder hole, stomata, connect between the rib of sieve intact, do not generate any contraction crack.The alloy is after processing
Have the gloss of yellow, and new oxide layer can also be formed on fresh matrix after surface layer is partially damaged, to make
The color perception for obtaining surface layer is repaired.The silver jewellery prepared using the alloy, will not leave surface is streaked even if nail
Any scratch.The silver jewellery prepared using the material, after normal use 4 years, surface is not also because contacting making for hard object formation
Use scratch.It thus ensure that the surface perception and user experience when alloy uses to the full extent.Using material preparation
Jewellery use in 4 under relevant environment does not all have apparent corrosion phenomenon.And traditional seedling silver jewellery is after using 4 months
It will there is a phenomenon where apparent sulfide stainings.
Embodiment 3
The anticorrosive yellow low silver content alloy of seedling silver jewellery high rigidity and its technique.By weight percentage, the composition of alloy
For P:0.4wt.%,C:0.3wt.%,Li:0.6wt.%,W:0.4wt.%,Y:1.2wt.%,Zn:8.5wt.%,Ni:6.0wt.%,
Ag:45.0wt.%, surplus are copper.The anticorrosive yellow low silver content alloy of above-mentioned seedling silver jewellery high rigidity and its technique, including
Following steps：As above the raw material matched is added in the electric induction furnace under ar gas environment, and uses graphite crucible;When melting
1400 degree keep the temperature 10 minutes, uniform by Efco-Northrup furnace electromagnetic agitation;It keeps the temperature 1 minute at 1400 degree after mixing evenly and pours and cast out
Furnace;Alloy casting uses the punching block of diameter 20-30mm, and is cooled down by the way of water cooling.By resulting ingot casting at room temperature into
Row rolling, rolling lower amount per pass is 20-30%;It is 420 degree per intermediate anneal temperature after rolling twice, keeps the temperature 0.4 hour;Finally
Material is rolled into the alloy sheets with a thickness of 10-20mm;It in jewellery forming process, needs to carry out vacuum annealing process, eliminates
Stress in process;Wherein, temperature is 400 degree, and the time is 0.6 hour；Finally jewellery colour during, need into
Row low-level oxidation operates, and 250 degree of temperature under atmospheric environment, the time is 0.4 hour.
The alloy has excellent casting character.It not only can be avoided the formation of shrinkage cavity in casting, it is also possible that casting
The tissue of part occurs in the form of equiax crystal, avoids the generation of dendrite.In addition, cast(ing) surface is bright and clean, without apparent sand hole,
The casting flaws such as cinder hole, stomata, connect between the rib of sieve intact, do not generate any contraction crack.The alloy is after processing
Have the gloss of yellow, and new oxide layer can also be formed on fresh matrix after surface layer is partially damaged, to make
The color perception for obtaining surface layer is repaired.The silver jewellery prepared using the alloy, will not leave surface is streaked even if nail
Any scratch.The silver jewellery prepared using the material, after normal use 4 years, surface is not also because contacting making for hard object formation
Use scratch.It thus ensure that the surface perception and user experience when alloy uses to the full extent.Using material preparation
Jewellery use in 4 under relevant environment does not all have apparent corrosion phenomenon.And traditional seedling silver jewellery is after using 4 months
It will there is a phenomenon where apparent sulfide stainings.
Claims (3)
1. the anticorrosive yellow low silver content alloy of seedling silver jewellery high rigidity and its technique；According to weight percent, the alloy
Ingredient is: P:0.3-0.5wt.%,C:0.2-0.4wt.%,Li:0.5-0.8wt.%,W:0.3-0.5wt.%,Y:1.0-
1.5wt.%,Zn:8.0-1.0wt.%,Ni:5.0-8.0wt.%,Ag:40.0-50.0wt.%, surplus are copper.
2. the anticorrosive yellow low silver content alloy of seedling silver jewellery high rigidity and its technique according to claim 1, feature
It is to include following smelting step：As above the raw material matched is added in the electric induction furnace under ar gas environment, and uses graphite
Crucible;10 minutes are kept the temperature at 1400 degree when melting, it is uniform by Efco-Northrup furnace electromagnetic agitation;It is kept the temperature after mixing evenly at 1400 degree
1 minute and cast come out of the stove;Alloy casting uses the punching block of diameter 20-30mm, and is cooled down by the way of water cooling.
3. the anticorrosive yellow low silver content alloy of seedling silver jewellery high rigidity and its technique according to claim 1, feature
It is comprising using step as follows：Resulting ingot casting is rolled at room temperature, rolling lower amount per pass is 20-30%;Per twice
Intermediate anneal temperature is 420 degree after rolling, keeps the temperature 0.4 hour;Material is finally rolled into the alloy sheets with a thickness of 10-20mm;
It in jewellery forming process, needs to carry out vacuum annealing process, eliminates the stress in process;Wherein, temperature is 400 degree,
Time is 0.6 hour；Finally during jewellery colour, need to carry out low-level oxidation operation, 250 degree of temperature under atmospheric environment,
Time is 0.4 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810889184.XA CN108842088A (en) | 2018-08-07 | 2018-08-07 | The anticorrosive yellow low silver content alloy of seedling silver jewellery high rigidity and its technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810889184.XA CN108842088A (en) | 2018-08-07 | 2018-08-07 | The anticorrosive yellow low silver content alloy of seedling silver jewellery high rigidity and its technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108842088A true CN108842088A (en) | 2018-11-20 |
Family
ID=64192480
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810889184.XA Withdrawn CN108842088A (en) | 2018-08-07 | 2018-08-07 | The anticorrosive yellow low silver content alloy of seedling silver jewellery high rigidity and its technique |
Country Status (1)
| Country | Link |
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2018
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Application publication date: 20181120 |