CN104294078A - Preparation process for oxidation and discoloration resistant silver alloy - Google Patents
Preparation process for oxidation and discoloration resistant silver alloy Download PDFInfo
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- CN104294078A CN104294078A CN201410626726.6A CN201410626726A CN104294078A CN 104294078 A CN104294078 A CN 104294078A CN 201410626726 A CN201410626726 A CN 201410626726A CN 104294078 A CN104294078 A CN 104294078A
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Abstract
The invention belongs to the field of alloy, and provides a preparation process for oxidation and discoloration resistant silver alloy. The process specifically comprises the following steps: 1, preparing material; 2, heating and melting silver, tin and ruthenium in a vacuum melting furnace to prepare into a silver-tin-ruthenium ternary alloy solution; 3, taking respectively adding zinc, vanadium, manganese and indium weighed in parts into the taken ternary alloy solution under normal pressure, uniformly mixing and stirring, and performing heat preservation; 4, adding the intermediate alloy solution obtained in the step 3 into the residual ternary alloy solution in the step 2 to obtain a final silver alloy solution, and cooling under normal pressure and forming to obtain a silver alloy block. The silver alloy provided by the invention is good in oxidation and discoloration resistance the melting point of the silver alloy can be reduced, mechanical performance and processing performance of the alloy can be improved, the situation that the alloy is hard can be improved, and the silver alloy is corrosion resistant and oxidation resistant.
Description
Technical field
The present invention is a kind of preparation technology of anti-oxidant color changed silver alloy, belongs to alloy field.
Background technology
Silver is the widest element that distributes in precious metal, is 20 times of gold content.And in silver, add the performance that other alloy elements can improve silver, as copper can improve the hardness of silver, reduce fusing point, improve castability etc.Therefore, silver alloy is widely used in jewellery industry, silverware, photograph, electric and electronic, plating and health care industry, also gets more and more applications in new and high technology.But easily there is sulphide discoloration and produce oxidation erythema in silver alloy life-time service, affects attractive in appearance with use.And in world wide, all carried out the research work of anti-tarnishing silver alloy aspect, under the condition of low cost, improve the performance of silver alloys anti-discolouring, but produce little effect, so far there are no, and fruitful anti-tarnishing silver alloy goods go on the market.
On July 18th, 2007, Chinese invention patent application publication number CN100999792A disclosed a kind of anti-tarnishing silver alloy, adopt the multiple alloying element such as rare earth and zinc, silicon, germanium, tin, indium, brill to carry out multi-element alloyed, silver Ag 92.5-93.0%, copper Cu 3-5%, zinc Zn l-3%, germanium Ge 0-0.8%, silicon Si O-0.12%, tin Sn 0-1%, indium In 0-0.5%, yttrium Y 0-0.15%, cerium Ce 0-0.15%, lanthanum La 0-0.15%, cobalt Co 0-0.3%, boron-0.1%, magnesium Mg 0-0.01%.Although this formula can improve the tissue of alloy, crystal grain thinning, purification crystal boundary, improve anti-oxidant metachrosis, but this alloy uses a large amount of thuliums such as: germanium, yttrium, cerium, lanthanum and cobalt carry out alloying, cost is still higher, and mechanical property is not high simultaneously.
Summary of the invention
For solving the problem, the invention provides a kind of preparation technology of anti-oxidant color changed silver alloy, this technique adopts ternary alloy liquid and intermediate aluminium alloy combine with technique, make Alloy Anti oxidation stain good, and silver alloys fusing point can be reduced, not only can put forward heavy alloyed mechanical property and processing characteristics, can also improve alloy quality hard and corrosion-resistant and oxidation.
Technical scheme of the present invention is, a kind of preparation technology of anti-oxidant color changed silver alloy, and concrete manufacturing process comprises the following steps:
1) get the raw materials ready: the components in weight percent weighing following raw materials according: silver-colored 87%-93%, tin 0.5%-2%, zinc 1-2.2%, vanadium 0.5%-3%, manganese 2%-5%, ruthenium 1.5%-3.5%, indium 0.6%-3.1%;
2) vacuum fusion: by the silver of components by weight percent described above, tin and ruthenium heating and melting in vacuum melting furnace respectively, control temperature 500-1000 DEG C, vacuum tightness 0.001Mpa; Mixing and stirring in vacuum environment afterwards, makes Yin-Xi-ruthenium ternary alloy liquid;
3) get the 10%-20% weight part of ternary alloy liquid total mass, in normal pressure, add zinc, vanadium, manganese and indium that components by weight percent described above weighs wherein respectively, control temperature 700-1400 DEG C; Mixing and stirring, insulation;
4) by 3) in the intermediate aluminium alloy of step, add to step 2) in remaining ternary alloy liquid; Control vacuum tightness 0.001Mpa, utilize the waste heat of intermediate aluminium alloy, stir 10 minutes rapidly; Release final silver alloys liquid, in normal pressure, cooling forming obtains silver alloys block.
The present invention, by adding tin in silver alloys, can reduce silver alloys fusing point; Add the mobility that zinc can improve alloy, and there is bleaching effect.With CN100999792A Technical comparing, the present invention does not use germanium, yttrium, cerium, lanthanum and cobalt; Creationary use ruthenium, vanadium and manganese.Wherein the quality of ruthenium hard and corrosion-resistant and oxidation, oxidation-resistance and the wear resistance of silver alloys can be increased; The interpolation of vanadium not only can make reductor, and can increase silver alloys ductility; The interpolation of manganese can improve the hardness of silver alloys.Preparation technology of the present invention adopts ternary alloy liquid and intermediate aluminium alloy combine with technique; Make first to make tin, ruthenium oxygen activity element in comparatively low temperature environment, first form stable ternary alloy; Recycling zinc, vanadium, manganese and phosphide element make part ternary alloy form polynary intermediate aluminium alloy, improve the growth mechanism of oxide compound and the plasticity of oxide film further, improve the adhesivity of oxide film, reduce the tendency of oxide film cracking, and suppress the deleterious effect of sulphur.The comprehensive action of these alloying elements of the present invention makes alloy have good sulfuration resistant variable color and anti-oxidant discoloration.Polynary intermediate aluminium alloy of the present invention only accounts for 1/5th or less principle of whole aluminium alloy, effective solution strengthening effect can be played to all ternary alloy liquid alloys, make it have higher hardness, plasticity of the present invention is good, make it that there is good mechanical property and processing characteristics, silver alloys is improved in anti-discolouring, and is more widely used.
Embodiment
The present invention is described further below in conjunction with specific embodiment, but is not restriction the present invention.
The present embodiment 1
A kind of its concrete manufacturing process of anti-tarnishing silver alloy comprises the following steps:
1) get the raw materials ready;
2) vacuum fusion: take silver-colored 87g, tin 0.5g and ruthenium 2g, respectively heating and melting in vacuum melting furnace, control temperature 500 DEG C, vacuum tightness 0.001Mpa; Mixing and stirring in vacuum environment afterwards, makes 89.5g Yin-Xi-ruthenium ternary alloy liquid;
3) get 10 g ternary alloy liquid, in normal pressure, add the zinc 1g that components by weight percent described above weighs wherein respectively, vanadium 3g, manganese 5g, indium 1.5g, control temperature 1000 DEG C; Mixing and stirring, insulation;
4) by 3) in the intermediate aluminium alloy of step, add to step 2) in remaining ternary alloy liquid; Control vacuum tightness 0.001Mpa, utilize the waste heat of intermediate aluminium alloy, stir 10 minutes rapidly; Release final silver alloys liquid, in normal pressure, cooling forming obtains silver alloys block.
The present embodiment 2
A kind of its concrete manufacturing process of anti-tarnishing silver alloy comprises the following steps:
1) get the raw materials ready;
2) vacuum fusion: take silver-colored 93g, tin 0.5g and ruthenium 1.5g, respectively heating and melting in vacuum melting furnace, control temperature 1000 DEG C, vacuum tightness 0.001Mpa; Mixing and stirring in vacuum environment afterwards, makes 95g Yin-Xi-ruthenium ternary alloy liquid;
2) get 9.5g ternary alloy liquid, in normal pressure, add the zinc 1.9g that components by weight percent described above weighs wherein respectively, vanadium 0.5g, manganese 2g, indium 0.6g, control temperature 1400 DEG C; Mixing and stirring, insulation;
3) by 3) in the intermediate aluminium alloy of step, add to step 2) in remaining ternary alloy liquid; Control vacuum tightness 0.001Mpa, utilize the waste heat of intermediate aluminium alloy, stir 10 minutes rapidly; Release final silver alloys liquid, in normal pressure, cooling forming obtains silver alloys block.
The present embodiment 3
A kind of its concrete manufacturing process of anti-tarnishing silver alloy comprises the following steps:
1) get the raw materials ready;
2) vacuum fusion: take silver-colored 87g, tin 0.7g and ruthenium 3.5g, respectively heating and melting in vacuum melting furnace, control temperature 800 DEG C, vacuum tightness 0.001Mpa; Mixing and stirring in vacuum environment afterwards, makes 91.2g Yin-Xi-ruthenium ternary alloy liquid;
2) get 18g ternary alloy liquid, in normal pressure, add the zinc 2.2g that components by weight percent described above weighs wherein respectively, vanadium 1.5g, manganese 2g, indium 3.1g, control temperature 1200 DEG C; Mixing and stirring, insulation;
3) by 3) in the intermediate aluminium alloy of step, add to step 2) in remaining ternary alloy liquid; Control vacuum tightness 0.001Mpa, utilize the waste heat of intermediate aluminium alloy, stir 10 minutes rapidly; Release final silver alloys liquid, in normal pressure, cooling forming obtains silver alloys block.
The present embodiment 4
A kind of its concrete manufacturing process of anti-tarnishing silver alloy comprises the following steps:
1) get the raw materials ready;
2) vacuum fusion: take silver-colored 89g, tin 2g and ruthenium 2g, respectively heating and melting in vacuum melting furnace, control temperature 500 DEG C, vacuum tightness 0.001Mpa; Mixing and stirring in vacuum environment afterwards, makes 93g Yin-Xi-ruthenium ternary alloy liquid;
2) 9.3g gets ternary alloy liquid, adds the zinc 1.2g that components by weight percent described above weighs wherein respectively, vanadium 1g, manganese 3g, indium 1.8g, control temperature 700 DEG C in normal pressure; Mixing and stirring, insulation;
3) by 3) in the intermediate aluminium alloy of step, add to step 2) in remaining ternary alloy liquid; Control vacuum tightness 0.001Mpa, utilize the waste heat of intermediate aluminium alloy, stir 10 minutes rapidly; Release final silver alloys liquid, in normal pressure, cooling forming obtains silver alloys block.
Claims (1)
1. a preparation technology for anti-oxidant color changed silver alloy, specific features is to comprise the following steps:
1) get the raw materials ready: the components in weight percent weighing following raw materials according: silver-colored 87%-93%, tin 0.5%-2%, zinc 1-2.2%, vanadium 0.5%-3%, manganese 2%-5%, ruthenium 1.5%-3.5%, indium 0.6%-3.1%;
2) vacuum fusion: by the silver of components by weight percent described above, tin and ruthenium heating and melting in vacuum melting furnace respectively, control temperature 500-1000 DEG C, vacuum tightness 0.001Mpa; Mixing and stirring in vacuum environment afterwards, makes Yin-Xi-ruthenium ternary alloy liquid;
3) get the 10%-20% weight part of ternary alloy liquid total mass, in normal pressure, add zinc, vanadium, manganese and indium that components by weight percent described above weighs wherein respectively, control temperature 700-1400 DEG C; Mixing and stirring, insulation;
4) by 3) in the intermediate aluminium alloy of step, add to step 2) in remaining ternary alloy liquid; Control vacuum tightness 0.001Mpa, utilize the waste heat of intermediate aluminium alloy, stir 10 minutes rapidly; Release final silver alloys liquid, in normal pressure, cooling forming obtains silver alloys block.
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| CN201410626726.6A CN104294078B (en) | 2014-11-10 | 2014-11-10 | A kind of preparation technology of anti-oxidant color changed silver alloy |
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| CN201410626726.6A CN104294078B (en) | 2014-11-10 | 2014-11-10 | A kind of preparation technology of anti-oxidant color changed silver alloy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115341187A (en) * | 2022-08-26 | 2022-11-15 | 中山智隆新材料科技有限公司 | Silver alloy target material and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010167490A (en) * | 2009-01-23 | 2010-08-05 | Junde Li | Method for producing alloy wire and product of the alloy wire |
| CN102312119A (en) * | 2010-06-29 | 2012-01-11 | 福达合金材料股份有限公司 | Preparation method for silver tin oxide electrical contact material |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010167490A (en) * | 2009-01-23 | 2010-08-05 | Junde Li | Method for producing alloy wire and product of the alloy wire |
| CN102312119A (en) * | 2010-06-29 | 2012-01-11 | 福达合金材料股份有限公司 | Preparation method for silver tin oxide electrical contact material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115341187A (en) * | 2022-08-26 | 2022-11-15 | 中山智隆新材料科技有限公司 | Silver alloy target material and preparation method and application thereof |
| CN115341187B (en) * | 2022-08-26 | 2024-03-12 | 中山智隆新材料科技有限公司 | Silver alloy target material and preparation method and application thereof |
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| CN104294078B (en) | 2016-05-11 |
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