CN102994787A - Method for vacuum melting of silver cadmium alloy ingot - Google Patents

Method for vacuum melting of silver cadmium alloy ingot Download PDF

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Publication number
CN102994787A
CN102994787A CN2012105287530A CN201210528753A CN102994787A CN 102994787 A CN102994787 A CN 102994787A CN 2012105287530 A CN2012105287530 A CN 2012105287530A CN 201210528753 A CN201210528753 A CN 201210528753A CN 102994787 A CN102994787 A CN 102994787A
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silver
crucible
cadmium
vacuum
main body
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CN2012105287530A
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唐进
贾勇
何健
陈昊
孙海霞
沈大吉
邹辉
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Xi'an Nuoboer Rare & Noble Metal Materials Co Ltd
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Xi'an Nuoboer Rare & Noble Metal Materials Co Ltd
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Abstract

The invention provides a method for vacuum melting of silver cadmium alloy ingots; equipment adopted by the method comprises a vacuum induction melting furnace main body; a crucible, an induction coil, a crucible cover, a hopper and a casting mold are disposed in the main body; a bleeder valve and an inflation valve are disposed on the main body; the crucible cover, the hopper and the crucible are respectively connected with an overturn handle. The method comprises the following steps: firstly, putting a silver ingot into the crucible, putting a cadmium ingot into the hopper, vacuum-pumping the vacuum induction melting furnace main body, heating and melting the block silver ingot into liquid silver; secondly, injecting inert gas, slightly decreasing the temperature of the liquid silver, adding a cadmium block into the crucible, covering the crucible cover and performing induction heating to form silver cadmium alloy liquid, casting into the casting mold to obtain the silver cadmium alloy ingot. The invention is simple and practical in operation, strong in repeatability, and suitable for large scale industrial production; With the invention, silver cadmium alloy ingots with high purity, uniform and stable components, no surface oxidation, and no internal metallurgical defects are obtained.

Description

A kind of method of vacuum melting silver-cadmium alloy ingot casting
Technical field
The invention belongs to the alloy preparing technical field, be specifically related to a kind of method of vacuum melting silver-cadmium alloy ingot casting.
Background technology
Fusing point differs larger between silver-cadmium alloy two constituent elements, and cadmium element vapour pressure height is easy to volatilization after being heated.In general industrial production, adopt the method for non-vacuum melting, interpolation insulating covering agent to carry out the melting of silver-cadmium alloy more.But owing to can not avoid the volatilization of cadmium fully, can form a large amount of poisonous Cadmium oxide flue dust in the analysis for non-vacuum, contaminate environment works the mischief to HUMAN HEALTH.In addition, add insulating covering agent and may introduce impurity element, the method for non-vacuum melting is not suitable for the melting to the higher silver-cadmium alloy ingot casting of purity requirement, and the non-vacuum melting slag making is more, and the casting defect that melts out is many, of poor quality.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, provides that a kind of operation is simple, and is repeatable strong, is suitable for the method for the vacuum melting silver-cadmium alloy ingot casting of large-scale industrial production.Adopt the volatilization that the method can the establishment cadmium element, can access that purity height, homogeneous chemical composition are stable, surperficial non-oxidation, inner silver-cadmium alloy ingot casting without metallurgical imperfection.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of method of vacuum melting silver-cadmium alloy ingot casting, it is characterized in that, the equipment that the method adopts comprises the vacuum induction melting furnace main body, be provided with crucible in the described vacuum induction melting furnace main body, mold and the hopper that is arranged at the crucible top, described crucible periphery is surrounded with ruhmkorff coil, be provided with extraction valve and inflation valve on the described vacuum induction melting furnace main body, described crucible top is provided with crucible cover, and described crucible cover is connected by the union lever crucible cover handle reverse outer with being positioned at the vacuum induction melting furnace main body; Described hopper is connected by the union lever hopper handle reverse outer with being positioned at the vacuum induction melting furnace main body; Described crucible is connected by the union lever crucible handle reverse outer with being positioned at the vacuum induction melting furnace main body, and the method may further comprise the steps:
Step 1, open crucible cover, put into crucible after silver ingot is cut into bulk, put into hopper after cadmium ingot is cut into bulk, then opening extraction valve vacuumizes the vacuum induction melting furnace main body, after vacuum tightness in the vacuum induction melting furnace main body is not more than 30Pa the block silver ingot in the crucible is carried out the induction heating first time, make block silver ingot melted by heating, obtain temperature and be 1200 ℃～1400 ℃ and liquid level without the liquid silver of bubble rolling, stop afterwards for the first time induction heating and close extraction valve;
Step 2, open inflation valve and in the vacuum induction melting furnace main body, be filled with rare gas element, the pressure of rare gas element is to close inflation valve behind 0.03MPa～0.06MPa in the vacuum induction melting furnace main body, and be down in the temperature of liquid silver described in the step 1 under 1000 ℃～1100 ℃ the condition, block cadmium ingot in the hopper is added in the crucible, crucible cover covered to make block cadmium ingot melted by heating at crucible be liquid cadmium, then the liquid silver in the crucible and liquid cadmium are carried out the induction heating second time, make liquid silver and liquid cadmium be smelted into silver-cadmium alloy liquid, stop afterwards for the second time induction heating, open crucible cover, silver-cadmium alloy liquid is cast in the mold, obtains the silver-cadmium alloy ingot casting behind the naturally cooling; The quality percentage composition of cadmium is 5%～45% in the described silver-cadmium alloy ingot casting, and surplus is silver and inevitable impurity.
The method of above-mentioned a kind of vacuum melting silver-cadmium alloy ingot casting is characterized in that the quality purity of silver ingot described in the step 1 and cadmium ingot all is not less than 99.9%.
The method of above-mentioned a kind of vacuum melting silver-cadmium alloy ingot casting is characterized in that the length of block cadmium ingot, width and thickness are 10mm～30mm in the step 1.
The method of above-mentioned a kind of vacuum melting silver-cadmium alloy ingot casting is characterized in that, the first time described in the step 1, the power of induction heating was 20kW.
The method of above-mentioned a kind of vacuum melting silver-cadmium alloy ingot casting is characterized in that, described in the step 2 for the second time the power of induction heating be 20kW, the time of induction heating described second time is 1min～2min.
The method of above-mentioned a kind of vacuum melting silver-cadmium alloy ingot casting is characterized in that rare gas element described in the step 2 is argon gas.
The present invention compared with prior art has the following advantages:
1, the present invention adopts the method melting silver-cadmium alloy ingot casting of vacuum melting, and fusion process carries out in airtight vacuum induction melting furnace, and the cadmium fumes that volatilization produces can be concentrated and carry out environmental protection treatment, can be to environment.
2, the present invention adopts the method melting silver-cadmium alloy ingot casting of vacuum melting, need not add insulating covering agent in the fusion process, effectively reduces sneaking into of impurity, the silver-cadmium alloy ingot casting non-oxidation that melting obtains, ingot quality height.
3, it is wayward to the present invention is directed to the volatile quantity of cadmium element in the vacuum melting silver-cadmium alloy ingot casting process, chemical ingredients is difficult for the optimization that even, stable problem has been carried out technique, a kind of volatilization that can the establishment cadmium element is provided, the chemical ingredients that makes the silver-cadmium alloy ingot casting that melting obtains evenly, stable.
4, adopt method of the present invention to carry out the melting of silver-cadmium alloy ingot casting, but the volatilization of establishment cadmium element can access that purity height, homogeneous chemical composition are stable, surperficial non-oxidation, inner silver-cadmium alloy ingot casting without metallurgical imperfection.
Below in conjunction with drawings and Examples the present invention is described in further detail.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram that vacuum melting silver-cadmium alloy ingot casting of the present invention adopts equipment.
Description of reference numerals:
The 1-hopper; 2-hopper handle reverse; The 3-ruhmkorff coil;
The 4-extraction valve; The 5-crucible cover; 6-crucible cover handle reverse;
The 7-crucible; 8-crucible handle reverse; The 9-inflation valve;
The 10-mold.
Embodiment
As shown in Figure 1, the equipment that vacuum melting silver-cadmium alloy ingot casting of the present invention adopts comprises the vacuum induction melting furnace main body, be provided with crucible 7, mold 10 in the described vacuum induction melting furnace main body and be arranged at the hopper 1 of crucible 7 tops, described crucible 7 peripheries are surrounded with ruhmkorff coil 3, be provided with extraction valve 4 and inflation valve 9 on the described vacuum induction melting furnace main body, described crucible 7 tops are provided with crucible cover 5, and described crucible cover 5 is connected by the union lever crucible cover handle reverse 6 outer with being positioned at the vacuum induction melting furnace main body; Described hopper 1 is connected by the union lever hopper handle reverse 2 outer with being positioned at the vacuum induction melting furnace main body; Described crucible 7 is connected by the union lever crucible handle reverse 8 outer with being positioned at the vacuum induction melting furnace main body.
Embodiment 1
The method of the vacuum melting silver-cadmium alloy ingot casting of present embodiment may further comprise the steps:
Step 1, operation crucible cover handle reverse 6 is opened crucible cover 5, be that 99.9% silver ingot is cut into the 9Kg that weighs after the bulk with quality purity, put into crucible 7, be that 99.9% cadmium ingot is cut into the 6Kg that weighs after the bulk of 20mm * 20mm * 20mm with quality purity, put into hopper 1, then opening 4 pairs of vacuum induction melting furnace main bodys of extraction valve vacuumizes, vacuum tightness in the vacuum induction melting furnace main body is to utilize the block silver ingot in 3 pairs of crucibles 7 of ruhmkorff coil to carry out the induction heating first time behind the 20Pa, heating power is 20kW, make block silver ingot melted by heating, obtaining temperature is 1200 ℃, and liquid level is without the liquid silver of bubble rolling, stops afterwards for the first time induction heating and closes extraction valve 4;
Step 2, open inflation valve 9 and in the vacuum induction melting furnace main body, be filled with rare gas element, the pressure of rare gas element is to close inflation valve 9 behind the 0.04MPa in the vacuum induction melting furnace main body, and be down in the temperature of liquid silver described in the step 1 under 1000 ℃ the condition, operation hopper handle reverse 2 adds the block cadmium ingot in the hopper 1 in the crucible 7, operate again crucible cover handle reverse 6 and crucible cover 5 is covered to make block cadmium ingot melted by heating at crucible 7 be liquid cadmium, then utilize liquid silver and liquid cadmium in 3 pairs of crucibles 7 of ruhmkorff coil to carry out the induction heating second time, heating power is 20kW.Be 2min heat-up time, the uniform silver-cadmium alloy liquid of forming component stops for the second time induction heating afterwards, and operation crucible cover handle reverse 6 is opened crucible cover 5, operation crucible handle reverse 8 is cast in silver-cadmium alloy liquid in the mold 10, obtains the silver-cadmium alloy ingot casting behind the naturally cooling.
The quality percentage composition of cadmium is 40% in the silver-cadmium alloy ingot casting that the vacuum melting of employing present embodiment obtains, and surplus is silver and inevitable impurity.The silver-cadmium alloy ingot casting purity that adopts present embodiment vacuum melting to obtain is high, and homogeneous chemical composition is stable, and surperficial non-oxidation is inner without metallurgical imperfection.
Embodiment 2
The method of the vacuum melting silver-cadmium alloy ingot casting of present embodiment may further comprise the steps:
Step 1, operation crucible cover handle reverse 6 is opened crucible cover 5, be that 99.9% silver ingot is cut into the 10.5Kg that weighs after the bulk with quality purity, put into crucible 7, be that 99.9% cadmium ingot is cut into the 4.5Kg that weighs after the bulk of 30mm * 30mm * 30mm with quality purity, put into hopper 1, then opening 4 pairs of vacuum induction melting furnace main bodys of extraction valve vacuumizes, vacuum tightness in the vacuum induction melting furnace main body utilizes the block silver ingot in 3 pairs of crucibles 7 of ruhmkorff coil to carry out the induction heating first time to 18Pa, heating power is 20kW, make block silver ingot melted by heating, obtaining temperature is 1300 ℃, and liquid level is without the liquid silver of bubble rolling, stops afterwards for the first time induction heating and closes extraction valve 4;
Step 2, open inflation valve 9 and in the vacuum induction melting furnace main body, be filled with rare gas element, the pressure of rare gas element is to close inflation valve 9 behind the 0.03MPa in the vacuum induction melting furnace main body, and be down in the temperature of liquid silver described in the step 1 under 1100 ℃ the condition, operation hopper handle reverse 2 adds the block cadmium ingot in the hopper 1 in the crucible 7, operate again crucible cover handle reverse 6 and crucible cover 5 is covered to make block cadmium ingot melted by heating at crucible 7 be liquid cadmium, then utilize liquid silver and liquid cadmium in 3 pairs of crucibles 7 of ruhmkorff coil to carry out the induction heating second time, heating power is 20kW.Be 1min heat-up time, the uniform silver-cadmium alloy liquid of forming component stops for the second time induction heating afterwards, and operation crucible cover handle reverse 6 is opened crucible cover 5, operation crucible handle reverse 8 is cast in silver-cadmium alloy liquid in the mold 10, obtains the silver-cadmium alloy ingot casting behind the naturally cooling.
The quality percentage composition of cadmium is 30% in the silver-cadmium alloy ingot casting that the vacuum melting of employing present embodiment obtains, and surplus is silver and inevitable impurity.The silver-cadmium alloy ingot casting purity that adopts present embodiment vacuum melting to obtain is high, and homogeneous chemical composition is stable, and surperficial non-oxidation is inner without metallurgical imperfection.
Embodiment 3
The method of the vacuum melting silver-cadmium alloy ingot casting of present embodiment may further comprise the steps:
Step 1, operation crucible cover handle reverse 6 is opened crucible cover 5, be that 99.9% silver ingot is cut into the 12Kg that weighs after the bulk with quality purity, put into crucible 7, be that 99.9% cadmium ingot is cut into the 3Kg that weighs after the bulk of 10mm * 10mm * 10mm with quality purity, put into hopper 1, then opening 4 pairs of vacuum induction melting furnace main bodys of extraction valve vacuumizes, vacuum tightness in the vacuum induction melting furnace main body is to utilize the block silver ingot in 3 pairs of crucibles 7 of ruhmkorff coil to carry out the induction heating first time behind the 25Pa, heating power is 20kW, make block silver ingot melted by heating, obtaining temperature is 1400 ℃, and liquid level is without the liquid silver of bubble rolling, stops afterwards for the first time induction heating and closes extraction valve 4;
Step 2, open inflation valve 9 and in the vacuum induction melting furnace main body, be filled with rare gas element, the pressure of rare gas element is to close inflation valve 9 behind the 0.06MPa in the vacuum induction melting furnace main body, and be down in the temperature of liquid silver described in the step 1 under 1050 ℃ the condition, operation hopper handle reverse 2 adds the block cadmium ingot in the hopper 1 in the crucible 7, operate again crucible cover handle reverse 6 and crucible cover 5 is covered to make block cadmium ingot melted by heating at crucible 7 be liquid cadmium, then utilize liquid silver and liquid cadmium in 3 pairs of crucibles 7 of ruhmkorff coil to carry out the induction heating second time, heating power is 20kW, be 1min heat-up time, the uniform silver-cadmium alloy liquid of forming component, stop afterwards for the second time induction heating, operation crucible cover handle reverse 6 is opened crucible cover 5, operation crucible handle reverse 8 is cast in silver-cadmium alloy liquid in the mold 10, obtains the silver-cadmium alloy ingot casting behind the naturally cooling.
The quality percentage composition of cadmium is 20% in the silver-cadmium alloy ingot casting that the vacuum melting of employing present embodiment obtains, and surplus is silver and inevitable impurity.The silver-cadmium alloy ingot casting purity that adopts present embodiment vacuum melting to obtain is high, and homogeneous chemical composition is stable, and surperficial non-oxidation is inner without metallurgical imperfection.
Embodiment 4
The method of the vacuum melting silver-cadmium alloy ingot casting of present embodiment may further comprise the steps:
Step 1, operation crucible cover handle reverse 6 is opened crucible cover 5, be that 99.95% silver ingot is cut into the 8.8Kg that weighs after the bulk with quality purity, put into crucible 7, be that 99.95% cadmium ingot is cut into the 7.2Kg that weighs after the bulk of 10mm * 10mm * 10mm with quality purity, put into hopper 1, then opening 4 pairs of vacuum induction melting furnace main bodys of extraction valve vacuumizes, vacuum tightness in the vacuum induction melting furnace main body is to utilize the block silver ingot in 3 pairs of crucibles 7 of ruhmkorff coil to carry out the induction heating first time behind the 30Pa, heating power is 20kW, make block silver ingot melted by heating, obtaining temperature is 1200 ℃, and liquid level is without the liquid silver of bubble rolling, stops afterwards for the first time induction heating and closes extraction valve 4;
Step 2, open inflation valve 9 and in the vacuum induction melting furnace main body, be filled with rare gas element, the pressure of rare gas element is to close inflation valve 9 behind the 0.03MPa in the vacuum induction melting furnace main body, and be down in the temperature of liquid silver described in the step 1 under 1100 ℃ the condition, operation hopper handle reverse 2 adds the block cadmium ingot in the hopper 1 in the crucible 7, operate again crucible cover handle reverse 6 and crucible cover 5 is covered to make block cadmium ingot melted by heating at crucible 7 be liquid cadmium, then utilize liquid silver and liquid cadmium in 3 pairs of crucibles 7 of ruhmkorff coil to carry out the induction heating second time, heating power is 20kW, be 2min heat-up time, the uniform silver-cadmium alloy liquid of forming component, stop afterwards for the second time induction heating, operation crucible cover handle reverse 6 is opened crucible cover 5, operation crucible handle reverse 8 is cast in silver-cadmium alloy liquid in the mold 10, obtains the silver-cadmium alloy ingot casting behind the naturally cooling.
The quality percentage composition of cadmium is 45% in the silver-cadmium alloy ingot casting that the vacuum melting of employing present embodiment obtains, and surplus is silver and inevitable impurity.The silver-cadmium alloy ingot casting purity that adopts present embodiment vacuum melting to obtain is high, and homogeneous chemical composition is stable, and surperficial non-oxidation is inner without metallurgical imperfection.
Embodiment 5
The method of the vacuum melting silver-cadmium alloy ingot casting of present embodiment may further comprise the steps:
Step 1, operation crucible cover handle reverse 6 is opened crucible cover 5, be that 99.97% silver ingot is cut into the 14.25Kg that weighs after the bulk with quality purity, put into crucible 7, be that 99.97% cadmium ingot is cut into the 0.75Kg that weighs after the bulk of 10mm * 10mm * 10mm with quality purity, put into hopper 1, then opening 4 pairs of vacuum induction melting furnace main bodys of extraction valve vacuumizes, vacuum tightness in the vacuum induction melting furnace main body is to utilize the block silver ingot in 3 pairs of crucibles 7 of ruhmkorff coil to carry out the induction heating first time behind the 25Pa, heating power is 20kW, make block silver ingot melted by heating, obtaining temperature is 1400 ℃, and liquid level is without the liquid silver of bubble rolling, stops afterwards for the first time induction heating and closes extraction valve 4;
Step 2, open inflation valve 9 and in the vacuum induction melting furnace main body, be filled with rare gas element, the pressure of rare gas element is to close inflation valve 9 behind the 0.06MPa in the vacuum induction melting furnace main body, and be down in the temperature of liquid silver described in the step 1 under 1050 ℃ the condition, operation hopper handle reverse 2 adds the block cadmium ingot in the hopper 1 in the crucible 7, operate again crucible cover handle reverse 6 and crucible cover 5 is covered to make block cadmium ingot melted by heating at crucible 7 be liquid cadmium, then utilize liquid silver and liquid cadmium in 3 pairs of crucibles 7 of ruhmkorff coil to carry out the induction heating second time, heating power is 20kW, be 1min heat-up time, the uniform silver-cadmium alloy liquid of forming component, stop afterwards for the second time induction heating, operation crucible cover handle reverse 6 is opened crucible cover 5, operation crucible handle reverse 8 is cast in silver-cadmium alloy liquid in the mold 10, obtains the silver-cadmium alloy ingot casting behind the naturally cooling.
The quality percentage composition of cadmium is 5% in the silver-cadmium alloy ingot casting that the vacuum melting of employing present embodiment obtains, and surplus is silver and inevitable impurity.The silver-cadmium alloy ingot casting purity that adopts present embodiment vacuum melting to obtain is high, and homogeneous chemical composition is stable, and surperficial non-oxidation is inner without metallurgical imperfection.
The above only is preferred embodiment of the present invention, is not that the present invention is imposed any restrictions.Every any simple modification, change and equivalence of above embodiment being done according to the invention technical spirit changes, and all still belongs in the protection domain of technical solution of the present invention.

Claims (6)

1. the method for a vacuum melting silver-cadmium alloy ingot casting, it is characterized in that, the equipment that the method adopts comprises the vacuum induction melting furnace main body, be provided with crucible (7) in the described vacuum induction melting furnace main body, mold (10) and be arranged at the hopper (1) of crucible (7) top, described crucible (7) periphery is surrounded with ruhmkorff coil (3), be provided with extraction valve (4) and inflation valve (9) on the described vacuum induction melting furnace main body, described crucible (7) top is provided with crucible cover (5), and described crucible cover (5) is connected by the union lever crucible cover handle reverse (6) outer with being positioned at the vacuum induction melting furnace main body; Described hopper (1) is connected by the union lever hopper handle reverse (2) outer with being positioned at the vacuum induction melting furnace main body; Described crucible (7) is connected by the union lever crucible handle reverse (8) outer with being positioned at the vacuum induction melting furnace main body, and the method may further comprise the steps:
Step 1, open crucible cover (5), put into crucible (7) after silver ingot is cut into bulk, put into hopper (1) after cadmium ingot is cut into bulk, then opening extraction valve (4) vacuumizes the vacuum induction melting furnace main body, after vacuum tightness in the vacuum induction melting furnace main body is not more than 30Pa the block silver ingot in the crucible (7) is carried out the induction heating first time, make block silver ingot melted by heating, obtain temperature and be 1200 ℃～1400 ℃ and liquid level without the liquid silver of bubble rolling, stop afterwards for the first time induction heating and close extraction valve (4);
Step 2, open inflation valve (9) and in the vacuum induction melting furnace main body, be filled with rare gas element, the pressure of rare gas element is to close inflation valve (9) behind 0.03MPa～0.06MPa in the vacuum induction melting furnace main body, and fall in the temperature of liquid silver described in the step 1 under 1000 ℃～1100 ℃ the condition, block cadmium ingot in the hopper (1) is added in the crucible (7), crucible cover (5) covered to make block cadmium ingot melted by heating at crucible (7) be liquid cadmium, then the liquid silver in the crucible (7) and liquid cadmium are carried out the induction heating second time, make liquid silver and liquid cadmium be smelted into silver-cadmium alloy liquid, stop afterwards for the second time induction heating, open crucible cover (5), silver-cadmium alloy liquid is cast in the mold (10), obtains the silver-cadmium alloy ingot casting behind the naturally cooling; The quality percentage composition of cadmium is 5%～45% in the described silver-cadmium alloy ingot casting, and surplus is silver and inevitable impurity.
2. the method for a kind of vacuum melting silver-cadmium alloy ingot casting according to claim 1 is characterized in that, the quality purity of silver ingot described in the step 1 and cadmium ingot all is not less than 99.9%.
3. the method for a kind of vacuum melting silver-cadmium alloy ingot casting according to claim 1 is characterized in that, the length of block cadmium ingot, width and thickness are 10mm～30mm in the step 1.
4. the method for a kind of vacuum melting silver-cadmium alloy ingot casting according to claim 1 is characterized in that, the first time described in the step 1, the power of induction heating was 20kW.
5. the method for a kind of vacuum melting silver-cadmium alloy ingot casting according to claim 1 is characterized in that, described in the step 2 for the second time the power of induction heating be 20kW, the time of induction heating described second time is 1min～2min.
6. the method for a kind of vacuum melting silver-cadmium alloy ingot casting according to claim 1 is characterized in that, rare gas element described in the step 2 is argon gas.
CN2012105287530A 2012-12-10 2012-12-10 Method for vacuum melting of silver cadmium alloy ingot Pending CN102994787A (en)

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CN103394674A (en) * 2013-07-24 2013-11-20 西安工程大学 Vacuum induction furnace for casting thin-wall castings and method of casting thin-wall titanium alloy castings
CN103394674B (en) * 2013-07-24 2016-01-13 西安工程大学 The method of casting thin foundry goods vaccum sensitive stove and casting thin-wall titanium alloy foundry goods
CN104131189A (en) * 2014-06-19 2014-11-05 江苏美特林科特殊合金有限公司 Silver intermediate alloy and preparation method and application thereof
CN104131189B (en) * 2014-06-19 2016-06-22 江苏美特林科特殊合金有限公司 A kind of silver intermediate alloy and its preparation method and application
CN104498765A (en) * 2014-12-10 2015-04-08 宁波科扬贵金属合金科技有限公司 Method for preparing rare-earth contact material
CN105779699A (en) * 2016-03-28 2016-07-20 上海大学 Method for removing metallic inclusions through dissolved gas float process and pressurizing vacuum induction furnace refining device
CN106947944A (en) * 2017-05-23 2017-07-14 京东方科技集团股份有限公司 One kind evaporation crucible, vapor deposition source, evaporation coating device and evaporation coating method
CN109234688A (en) * 2017-07-10 2019-01-18 宁波微泰真空技术有限公司 The smelting equipment of ingot casting
CN108384978A (en) * 2018-04-25 2018-08-10 深圳宝福珠宝有限公司 A kind of processing method of melting heating equipment and hard platinum for noble metal
CN108384978B (en) * 2018-04-25 2023-12-05 深圳宝福珠宝有限公司 Smelting heating equipment for noble metal and processing method of hard platinum
CN109780860A (en) * 2019-01-14 2019-05-21 沈阳东博热工科技有限公司 A kind of vacuum induction melting furnace automatic replacement crucible and alloy masterbatch device
CN109780860B (en) * 2019-01-14 2024-01-19 沈阳东博热工科技有限公司 Automatic crucible and alloy master batch replacing device for vacuum induction smelting furnace
CN112097517A (en) * 2020-09-27 2020-12-18 宝鸡华煜鼎尊材料技术有限公司 Suspension smelting device with heat reflection cover and suspension smelting method
CN114395749A (en) * 2021-11-13 2022-04-26 洛阳高新四丰电子材料有限公司 Preparation method of large-size multi-element Ag-based alloy sputtering target material

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Application publication date: 20130327