CN103695694B - Silver alloy of a kind of high-hardness high temperature resistant and preparation method thereof - Google Patents
Silver alloy of a kind of high-hardness high temperature resistant and preparation method thereof Download PDFInfo
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- CN103695694B CN103695694B CN201310730606.6A CN201310730606A CN103695694B CN 103695694 B CN103695694 B CN 103695694B CN 201310730606 A CN201310730606 A CN 201310730606A CN 103695694 B CN103695694 B CN 103695694B
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- 229910001316 Ag alloy Inorganic materials 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 32
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 30
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052802 copper Inorganic materials 0.000 claims abstract description 26
- 239000010949 copper Substances 0.000 claims abstract description 26
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052709 silver Inorganic materials 0.000 claims abstract description 23
- 239000004332 silver Substances 0.000 claims abstract description 23
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 16
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 16
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 16
- 239000010941 cobalt Substances 0.000 claims abstract description 16
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052742 iron Inorganic materials 0.000 claims abstract description 16
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 16
- 239000011733 molybdenum Substances 0.000 claims abstract description 16
- 239000010936 titanium Substances 0.000 claims abstract description 16
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 16
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 16
- 239000010937 tungsten Substances 0.000 claims abstract description 16
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 16
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 16
- 239000011701 zinc Substances 0.000 claims abstract description 16
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 15
- 238000005275 alloying Methods 0.000 claims abstract description 12
- 239000000470 constituent Substances 0.000 claims abstract description 11
- -1 0.2 ~ 0.8 part Chemical compound 0.000 claims abstract description 10
- 238000002844 melting Methods 0.000 claims description 51
- 230000008018 melting Effects 0.000 claims description 51
- 238000003723 Smelting Methods 0.000 claims description 50
- 229910002056 binary alloy Inorganic materials 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 16
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 claims description 16
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 claims description 16
- 238000009413 insulation Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 229910045601 alloy Inorganic materials 0.000 description 8
- 239000000956 alloy Substances 0.000 description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000013078 crystal Substances 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 238000000113 differential scanning calorimetry Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 241001062472 Stokellia anisodon Species 0.000 description 1
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910000898 sterling silver Inorganic materials 0.000 description 1
- 239000010934 sterling silver Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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Abstract
The invention provides a kind of silver alloy of high-hardness high temperature resistant, it is characterized in that, be made up of the alloying constituent of following components by weight percent: silver 90 ~ 95.0 parts, copper 1.4 ~ 3.0 parts, 2.2 ~ 3.5 parts, zinc, 0.2 ~ 0.8 part, nickel, iron 0.5 ~ 1.2 part, titanium 0.6 ~ 1.0 part, cobalt 0.3 ~ 0.6 part, 0.7 ~ 1.0 part, tungsten, molybdenum 0.2 ~ 0.5 part and vanadium 0.5 ~ 1.2 part.The alloying constituent of adding, improve the resistance to elevated temperatures of silver alloys, in the middle of solving existing social production of silver alloys technique, silver alloys hardness is low, and a difficult problem for non-refractory, greatly reduces production cost, has very large DEVELOPMENT PROSPECT.
Description
Technical field
The present invention relates to chemical material field, particularly relate to silver alloy of a kind of high-hardness high temperature resistant and preparation method thereof.
Background technology
Silver is the same with gold, is the one of precious metal, has unique advantageous property, is given currency and decoration dual value by people.But pure argent hardness is low, there is ductility, be not easy to manufacture shaping, and be easy to oxidation stain, be not suitable for be used in ornaments, artwork and tableware thereof processing in the middle of, so manufacture in the middle of can select in the silver of certainweight ratio of component, add some other composite material.
Sterling silver alloy alloy is the silver-copper binary alloy formed with copper alloying element, wherein silver is 92.5wt%, and copper is 7.5wt%, 925 silver medals namely usually alleged by us, although the silver alloys that with the addition of copper improves certain hardness, hardness is not highly significant with heat-resisting ability.
Summary of the invention
In order to significantly improve silver alloy resistance to elevated temperatures, improve its hardness, increase the design freedom of its style, be applied in the middle of the production technique such as ornaments, artwork better, one aspect of the present invention provides a kind of silver alloy of high-hardness high temperature resistant, and described silver alloy is made up of the alloying constituent of following components by weight percent:
Silver 90 ~ 95.0 parts, copper 1.4 ~ 3.0 parts, 2.2 ~ 3.5 parts, zinc, 0.2 ~ 0.8 part, nickel, iron 0.5 ~ 1.2 part, titanium 0.6 ~ 1.0 part, cobalt 0.3 ~ 0.6 part, 0.7 ~ 1.0 part, tungsten, molybdenum 0.2 ~ 0.5 part and vanadium 0.5 ~ 1.2 part.
Preferably, described silver alloy is made up of the alloying constituent of following components by weight percent: silver 90 ~ 92.5 parts, copper 1.4 ~ 2.6 parts, 2.2 ~ 3.0 parts, zinc, 0.2 ~ 0.6 part, nickel, iron 0.5 ~ 0.8 part, titanium 0.6 ~ 0.8 part, cobalt 0.3 ~ 0.5 part, 0.7 ~ 0.8 part, tungsten, molybdenum 0.2 ~ 0.4 part and vanadium 0.5 ~ 1.0 part.
Preferably, described silver alloy is made up of the alloying constituent of following components by weight percent: silver 92.5 parts, copper 1.5 parts, 2.2 parts, zinc, 0.3 part, nickel, iron 0.5 part, titanium 0.7 part, cobalt 0.3 part, 0.8 part, tungsten, molybdenum 0.2 part and vanadium 1.0 parts.
The present invention additionally provides the preparation method of this kind of high-hardness high temperature resistant silver alloy on the other hand, it is characterized in that, adopts the alloying constituent of claim 1,2 or 3, comprises the following steps:
1) first put high melt in vacuum melting furnace into by after copper and the mixing of zinc raw material, smelting temperature is: 800 ~ 900 DEG C, and smelting time is: 1 ~ 2h, forms copper-zinc binary alloy;
2) by through step 1) copper-zinc binary alloy after melting takes out and puts into clear water and cool, and is cooled to room temperature, for subsequent use;
3) put in vacuum melting furnace by the mixing of copper and mickel raw material, smelting temperature is: 900 ~ 1000 DEG C, and smelting time is: 1 ~ 2h, forms copper-nickel binary alloy;
4) by through step 3) copper-nickel binary alloy after melting takes out and puts into clear water and cool, and is cooled to room temperature, for subsequent use;
5) by step 1) and 4) in copper-zinc binary alloy of obtaining together with silver, enter high melt in vacuum melting furnace with copper nickel binary alloy, smelting temperature is: 1000 ~ 1100 DEG C, smelting time is: 2 ~ 3h, then to put in high temperature box type resistance furnace 500 ~ 700 degrees Celsius of insulations 20 ~ 30 minutes into, be cooled to room temperature with clear water;
6) by through step 5) ingot bar after melting takes out and puts into vacuum melting furnace, and add cobalt, tungsten and molybdenum, smelting temperature is simultaneously: 1100 ~ 1200 DEG C, and smelting time is: 3 ~ 4h, then takes out to put into clear water and cool, and is cooled to room temperature, for subsequent use;
7) by step 6) cooled ingot bar puts into vacuum melting furnace, add simultaneously and be by weight proportion: iron, titanium and vanadium, smelting temperature is: 1100 ~ 1200 DEG C, smelting time is: 4 ~ 6h, then to put in high temperature box type resistance furnace 500 ~ 700 degrees Celsius of insulations 20 ~ 30 minutes into, be cooled to room temperature with clear water.
In hot environment, the alloy crystal boundary of metal is weak link, only with the addition of the not resistance to high temperature of copper of 7.5% in standard 925 silver medal.The present invention adds the iron of trace, titanium, cobalt, tungsten, and molybdenum and vanadium, can fill crystal boundary room, reduces grain boundary decision speed in creep process, improves intensity and the plasticity of alloy crystal boundary.With the addition of copper, enhance the hardness of alloy; Zinc, as the alternative metals of copper, not only can reduce alloy melting point, can make reductor, improves the mobility of melt, also has bleaching effect; Nickel, with the addition of certain proportion nickel can refinement silver alloy crystal grain, improves the hardness of silver alloy, wear resistance and high temperature resistance scaling loss ability.Adopt alloying constituent provided by the invention, reduce alloy substrate stacking fault energy, slow down matrix element rate of diffusion, reach the effect of reinforced alloys matrix, improve the resistance to elevated temperatures of silver alloys, decrease high temperature consumption in process of production, greatly reduce production cost.Method provided by the invention is by being first smelt copper-zinc binary alloy, copper-nickel binary alloy and then and other alloying constituent temperature-gradient method melting, then it is tight that the mode being repeatedly cooled to room temperature through clear water makes to make silver alloy metallographic structure, particle diameter diminishes, thus reaches the effect that improve silver alloy hardness.
Embodiment
The present invention is described in further detail below, can implement according to this with reference to specification sheets word to make those skilled in the art.
Embodiment 1
Take silver 9.0 grams, copper 1.4 grams, 2.2 grams, zinc, 0.2 gram, nickel, iron 0.5 gram, titanium 0.6 gram, cobalt 0.3 gram, 0.7 gram, tungsten, molybdenum 0.2 gram and vanadium gram.
1) first put high melt in vacuum melting furnace into by after 0.7 gram of copper and 2.2 grams of zinc raw material mixing, smelting temperature is: 800 DEG C, and smelting time is: 1h, forms copper-zinc binary alloy;
2) by through step 1) copper-zinc binary alloy after melting takes out and puts into clear water and cool, and is cooled to room temperature, for subsequent use;
3) put in vacuum melting furnace by 0.7 gram of copper and 0.2 gram of nickel raw material mixing, smelting temperature is: 900 DEG C, and smelting time is: 1h, forms copper-nickel binary alloy;
4) by through step 3) copper-nickel binary alloy after melting takes out and puts into clear water and cool, and is cooled to room temperature, for subsequent use;
5) by step 1) and 4) in copper-zinc binary alloy of obtaining together with silver, enter high melt in vacuum melting furnace with copper nickel binary alloy, smelting temperature is: 1000 DEG C, smelting time is: 2h, then to put in high temperature box type resistance furnace 500 degrees Celsius of insulations 20 minutes into, be cooled to room temperature with clear water;
6) by through step 5) ingot bar after melting takes out and puts into vacuum melting furnace, and add cobalt, tungsten and molybdenum, smelting temperature is simultaneously: 1100 DEG C, and smelting time is: 3h, then takes out to put into clear water and cool, and is cooled to room temperature, for subsequent use;
7) by step 6) cooled ingot bar puts into vacuum melting furnace, add simultaneously and be by weight proportion: iron, titanium and vanadium, smelting temperature is: 1100 DEG C, and smelting time is: 4h, then to put in high temperature box type resistance furnace 500 degrees Celsius of insulations 20 minutes into, be cooled to room temperature with clear water.
Hardness test: the silver alloy handled well is carried out on the semi-automatic microhardness tester of HXS-1000AK type, select room temperature, loaded load 0.2 gram, 20 seconds loading times, surveys ten points, averages, show that the hardness value of silver alloy is 95.2HV;
Dsc analysis: be high-purity argon gas at protective atmosphere, Range of measuring temp is 50-640 degree Celsius, and scanning speed is 20c/min, condition under differential scanning calorimetric analysis is carried out to silver alloy; Then by carrying out OM observation in olympusPMG3 type, Quanta400 type carries out SEM observation, JEM-2000FXII carries out tem observation, finally carry out XRD analysis, reach a conclusion, the silver alloy produced can not increase substantially the stacking fault energy of matrix silver, and in dentrite, shrinkage cavity reduces, and metallographic structure is comparatively tight.
High temperature resistance is tested: the silver alloy prepared being put into temperature is 1h in 1400 DEG C of vacuum melting furnaces, and metal does not present consistence melting state, and melting moiety weight percentage is 26%.
Embodiment 2
Silver 9.25 grams, copper 1.5 grams, 2.2 grams, zinc, 0.3 gram, nickel, iron 0.5 gram, titanium 0.7 gram, cobalt 0.3 gram, 0.8 gram, tungsten, molybdenum 0.2 gram and vanadium 1.0 grams.
1) first put high melt in vacuum melting furnace into by after 0.75 gram of copper and 2.2 grams of zinc raw material mixing, smelting temperature is: 800 DEG C, and smelting time is: 2h, forms copper-zinc binary alloy;
2) by through step 1) copper-zinc binary alloy after melting takes out and puts into clear water and cool, and is cooled to room temperature, for subsequent use;
3) put in vacuum melting furnace by 0.75 gram of copper and 0.3 gram of nickel raw material mixing, smelting temperature is: 900 DEG C, and smelting time is: 2h, forms copper-nickel binary alloy;
4) by through step 3) copper-nickel binary alloy after melting takes out and puts into clear water and cool, and is cooled to room temperature, for subsequent use;
5) by step 1) and 4) in copper-zinc binary alloy of obtaining together with silver, enter high melt in vacuum melting furnace with copper nickel binary alloy, smelting temperature is: 1100 DEG C, smelting time is: 2h, then to put in high temperature box type resistance furnace 500 degrees Celsius of insulations 20 minutes into, be cooled to room temperature with clear water;
6) by through step 5) ingot bar after melting takes out and puts into vacuum melting furnace, and add cobalt, tungsten and molybdenum, smelting temperature is simultaneously: 1100 DEG C, and smelting time is: 3h, then takes out to put into clear water and cool, and is cooled to room temperature, for subsequent use;
7) by step 6) cooled ingot bar puts into vacuum melting furnace, add simultaneously and be by weight proportion: iron, titanium and vanadium, smelting temperature is: 1200 DEG C, and smelting time is: 6h, then to put in high temperature box type resistance furnace 700 degrees Celsius of insulations 30 minutes into, be cooled to room temperature with clear water.
Hardness test: the silver alloy handled well is carried out on the semi-automatic microhardness tester of HXS-1000AK type, select room temperature, loaded load 0.2 gram, 20 seconds loading times, surveys ten points, averages, show that the hardness value of silver alloy is 120.8HV;
Dsc analysis: be high-purity argon gas at protective atmosphere, Range of measuring temp is 50-640 degree Celsius, and scanning speed is 20c/min, condition under differential scanning calorimetric analysis is carried out to silver alloy; Then by carrying out OM observation in olympusPMG3 type, Quanta400 type carries out SEM observation, JEM-2000FXII carries out tem observation, finally carry out XRD analysis, reach a conclusion, the silver alloy produced can not increase substantially the stacking fault energy of matrix silver, and in dentrite, shrinkage cavity reduces, and metallographic structure tightness degree clearly.
High temperature resistance is tested: the silver alloy prepared being put into temperature is 2h in 1500 DEG C of vacuum melting furnaces, and metal does not present consistence melting state, and melting moiety weight percentage is 12%.
Embodiment 3
Silver 9.5 grams, copper 2.5 grams, 2.2 grams, zinc, 0.8 gram, nickel, iron 0.8 gram, titanium 1.0 grams, cobalt 0.6 gram, 0.9 gram, tungsten, molybdenum 0.4 gram and vanadium 1.2 grams.
1) first put high melt in vacuum melting furnace into by after 1.25 grams of copper and 2.2 grams of zinc raw material mixing, smelting temperature is: 800 DEG C, and smelting time is: 2h, forms copper-zinc binary alloy;
2) by through step 1) copper-zinc binary alloy after melting takes out and puts into clear water and cool, and is cooled to room temperature, for subsequent use;
3) put in vacuum melting furnace by 0.75 gram of copper and 0.3 gram of nickel raw material mixing, smelting temperature is: 900 DEG C, and smelting time is: 2h, forms copper-nickel binary alloy;
4) by through step 3) copper-nickel binary alloy after melting takes out and puts into clear water and cool, and is cooled to room temperature, for subsequent use;
5) by step 1) and 4) in copper-zinc binary alloy of obtaining together with silver, enter high melt in vacuum melting furnace with copper nickel binary alloy, smelting temperature is: 1100 DEG C, smelting time is: 2h, then to put in high temperature box type resistance furnace 500 degrees Celsius of insulations 20 minutes into, be cooled to room temperature with clear water;
6) by through step 5) ingot bar after melting takes out and puts into vacuum melting furnace, and add cobalt, tungsten and molybdenum, smelting temperature is simultaneously: 1100 DEG C, and smelting time is: 3h, then takes out to put into clear water and cool, and is cooled to room temperature, for subsequent use;
7) by step 6) cooled ingot bar puts into vacuum melting furnace, add simultaneously and be by weight proportion: iron, titanium and vanadium, smelting temperature is: 1200 DEG C, and smelting time is: 6h, then to put in high temperature box type resistance furnace 700 degrees Celsius of insulations 30 minutes into, be cooled to room temperature with clear water.
Hardness test: the silver alloy handled well is carried out on the semi-automatic microhardness tester of HXS-1000AK type, select room temperature, loaded load 0.2 gram, 20 seconds loading times, surveys ten points, averages, show that the hardness value of silver alloy is 110.6HV;
Dsc analysis: be high-purity argon gas at protective atmosphere, Range of measuring temp is 50-640 degree Celsius, and scanning speed is 20c/min, condition under differential scanning calorimetric analysis is carried out to silver alloy; Then by carrying out OM observation in olympusPMG3 type, Quanta400 type carries out SEM observation, JEM-2000FXII carries out tem observation, finally carry out XRD analysis, reach a conclusion, the silver alloy produced can not increase substantially the stacking fault energy of matrix silver, and in dentrite, shrinkage cavity reduces, and metallographic structure tightness degree is comparatively obvious.
High temperature resistance is tested: the silver alloy prepared being put into temperature is 2h in 1500 DEG C of vacuum melting furnaces, and metal does not present consistence melting state, and melting moiety weight percentage is 20%.
Although embodiment of the present invention are open as above, but it is not restricted to listed in specification sheets and embodiment utilization, it can be applied to various applicable the field of the invention completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the embodiment described.
Claims (4)
1. the silver alloy of a high-hardness high temperature resistant, it is characterized in that, described silver alloy is made up of the alloying constituent of following components by weight percent: silver 90 ~ 95.0 parts, copper 1.4 ~ 3.0 parts, 2.2 ~ 3.5 parts, zinc, 0.2 ~ 0.8 part, nickel, iron 0.5 ~ 1.2 part, titanium 0.6 ~ 1.0 part, cobalt 0.3 ~ 0.6 part, 0.7 ~ 1.0 part, tungsten, molybdenum 0.2 ~ 0.5 part and vanadium 0.5 ~ 1.2 part.
2. the silver alloy of high-hardness high temperature resistant as described in claim 1, it is characterized in that, described silver alloy is made up of the alloying constituent of following components by weight percent: silver 90 ~ 92.5 parts, copper 1.4 ~ 2.6 parts, 2.2 ~ 3.0 parts, zinc, 0.2 ~ 0.6 part, nickel, iron 0.5 ~ 0.8 part, titanium 0.6 ~ 0.8 part, cobalt 0.3 ~ 0.5 part, 0.7 ~ 0.8 part, tungsten, molybdenum 0.2 ~ 0.4 part and vanadium 0.5 ~ 1.0 part.
3. the silver alloy of high-hardness high temperature resistant as described in claim 1, it is characterized in that, described silver alloy is made up of the alloying constituent of following components by weight percent: silver 92.5 parts, copper 1.5 parts, 2.2 parts, zinc, 0.3 part, nickel, iron 0.5 part, titanium 0.7 part, cobalt 0.3 part, 0.8 part, tungsten, molybdenum 0.2 part and vanadium 1.0 parts.
4. a preparation method for the silver alloy of the high-hardness high temperature resistant as described in claim 1,2 or 3, is characterized in that, comprise the following steps:
1) first put high melt in vacuum melting furnace into by after copper and the mixing of zinc raw material, smelting temperature is: 800 ~ 900 DEG C, and smelting time is: 1 ~ 2h, forms copper-zinc binary alloy;
2) by through step 1) copper-zinc binary alloy after melting takes out and puts into clear water and cool, and is cooled to room temperature, for subsequent use;
3) put in vacuum melting furnace by the mixing of copper and mickel raw material, smelting temperature is: 900 ~ 1000 DEG C, and smelting time is: 1 ~ 2h, forms copper-nickel binary alloy;
4) by through step 3) copper-nickel binary alloy after melting takes out and puts into clear water and cool, and is cooled to room temperature, for subsequent use;
5) by step 2) and 4) in copper-zinc binary alloy of obtaining together with silver, enter high melt in vacuum melting furnace with copper nickel binary alloy, smelting temperature is: 1000 ~ 1100 DEG C, smelting time is: 2 ~ 3h, then to put in high temperature box type resistance furnace 500 ~ 700 degrees Celsius of insulations 20 ~ 30 minutes into, be cooled to room temperature with clear water;
6) by through step 5) ingot bar after melting takes out and puts into vacuum melting furnace, and add cobalt, tungsten and molybdenum, smelting temperature is simultaneously: 1100 ~ 1200 DEG C, and smelting time is: 3 ~ 4h, then takes out to put into clear water and cool, and is cooled to room temperature, for subsequent use;
7) by step 6) cooled ingot bar puts into vacuum melting furnace, add iron, titanium and vanadium, smelting temperature is simultaneously: 1100 ~ 1200 DEG C, and smelting time is: 4 ~ 6h, then to put in high temperature box type resistance furnace 500 ~ 700 degrees Celsius of insulations 20 ~ 30 minutes into, be cooled to room temperature with clear water.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1468707A (en) * | 2003-06-06 | 2004-01-21 | 重庆川仪一厂 | Composite electrical contact material |
| CN1961092A (en) * | 2004-06-02 | 2007-05-09 | 米德尔塞克斯银有限公司 | Process for making finished or semi-finished articles of silver alloy comprising copper and germanium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1468707A (en) * | 2003-06-06 | 2004-01-21 | 重庆川仪一厂 | Composite electrical contact material |
| CN1961092A (en) * | 2004-06-02 | 2007-05-09 | 米德尔塞克斯银有限公司 | Process for making finished or semi-finished articles of silver alloy comprising copper and germanium |
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