CN104240996B - The production technology of silver palladium contact - Google Patents
The production technology of silver palladium contact Download PDFInfo
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- CN104240996B CN104240996B CN201410460663.1A CN201410460663A CN104240996B CN 104240996 B CN104240996 B CN 104240996B CN 201410460663 A CN201410460663 A CN 201410460663A CN 104240996 B CN104240996 B CN 104240996B
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Abstract
The invention discloses the production technology of a kind of silver palladium contact, comprise the steps: that (1) casts；(2) wire drawing: 1. kicker；2. it is tempered；3. silk is rolled；4. wire drawing；(3) contact is beaten: 1. beat contact；2. wash；3. dry；(4) packaging.Palladium of the present invention and silver can infinitely dissolve each other, and form continuous print solid solution.Palladium and silver are melt into alloy, can improve hardness and the intensity of contact, it is possible to reduce the formation speed of Argentous sulfide., delay contact by sulfur corrosion, extend its service life.
Description
Technical field
The present invention relates to the field of deep of noble metal, be specifically related to the production technology of a kind of silver palladium contact.
Background technology
It is known that silver has good electric conductivity, but it is easy to by sulfur corrosion, so generally adding other metals in silver to make alloy, reducing the formation speed of Argentous sulfide., delaying by sulfur corrosion.
Along with the demand of modern industry, electric equipment also grows with each passing hour, of many uses, of a great variety, plays the most important role, but unalterable be the static contact conducted electricity above.Static contact is active in each electric component at present, and its market is unprecedentedly to have absolutely, and maintains stable rising trend.Riveting silver contact is the most all that hand adaptation punch press operates, and riveting Yield and quality is unstable, and operative employee is easy to occupation disease occur, and suitable danger.
Palladium energy hydrofluoric acid resistant, phosphoric acid, perchloric acid, hydrochloric acid and the erosion of sulfuric acid vapor, but it is soluble in chloroazotic acid and the sulphuric acid of heat and concentrated nitric acid.Melted sodium hydroxide, sodium carbonate, sodium peroxide have corrosiveness to palladium.The oxidation state of palladium is+2 ,+3 ,+4.Palladium easily forms coordination compound, such as K2 [PdCl4], K4 [Pd (CN) 4] etc..
Can be separated by the natural alloy of platinum.Palladium reserves on earth are rare, and more difficulty is smelted in digging, belongs to rare precious metal series Au Ag Pt Pd, ruthenium, the category of iridium.Palladium content in the earth's crust is 1 × 10-6%, is often dispersed in together with other platinum groups in the multi mineral (such as former platinum ore, villamaninite, pentlandite etc.) of alluvial deposit and placer.Independent Mineral has allopalladium, palladium platinum ore to draw, a lead four palladium ore deposit, stibiopalladinite, polarite, stannopalladinite etc., also form nature palladium with free state.The fusing point of palladium is minimum in platinum group metal.
At present, the production technology of the silver-colored palladium contact of a kind of high strength and high hardness is lacked.
Summary of the invention
The technical problem to be solved there is provided the production technology of a kind of high strength and high hardness silver palladium contact.
To achieve these goals, the present invention is achieved through the following technical solutions: a kind of silver palladium contact production technology that the present invention provides, and comprises the steps:
(1) casting: silver palladium alloy weight proportion is silver plate: palladium sponge=98.5:1.5, is put in batches in intermediate frequency furnace by the raw material of the silver plate prepared and palladium sponge, turns on the power heating, treats that silver plate and palladium sponge are completely dissolved, stirs with stone grinder rod；
Every stove needs to stir twice；
Casting die is fixed, heats with firelock, after 10-20min, silver water is slowly poured in mould, be cast into silver rod, then open mould, take out silver rod and be cooled to room temperature；
(2) wire drawing:
1. kicker: take the silver rod one cast, roll carefully with first set rolling roll machine, the most slowly extrude until first pair of rolling roll hole rolls from big to small by rolling roll hole；
2. tempering: putting in resistance furnace by the Rhizoma Humatae Tyermanni rolled, turn on the power heating, temperature controls at 700-900 DEG C；
3. silk is rolled: take out cooling after Rhizoma Humatae Tyermanni burning is red, put into by Rhizoma Humatae Tyermanni in the second set rolling roll machine, the most slowly extrude by rolling roll hole, until rolling roll hole rolls；Wire ring is good, put into resistance furnace tempering；
4. wire drawing: taking out the filamentary silver cooling in resistance furnace, rolled by silk head, then pass from the die hole of wire drawing on tip machine, described Die orifice diameter is to have hardness during 320-480mm, needs tempering；The filamentary silver being tempered continues dog after taking out cooling, sends into mould wire drawing, until pulling out from mould；
(3) contact is beaten
1. contact is beaten: silk head injecting the charging hole of contact machine, regulates entry table, turn on the power, contact machine works automatically；
2. washing: the contact accomplished fluently is put into polishing bucket in, add water and pour cleaning mixture into, rotary machine, wait contact be washed till do not have oil stain, shinny after use instead water clean；
3. drying: cleaned contact is put into dish, puts baking oven into, the temperature of baking oven controls as 100-120 DEG C, takes out cooling after waiting the water on contact to dry completely；
(4) packaging
To check out with overlap and underproof silver palladium contact, qualified silver-colored palladium contact is weighed by every bag of 1kg, packed, the most labelled.
Further, a diameter of 480mm or 460mm or 440mm of described die hole.
The silver-colored palladium contact that the production technology of silver palladium contact of the present invention prepares.
Beneficial effect: palladium of the present invention and silver can infinitely dissolve each other, forms continuous print solid solution.Palladium and silver are melt into alloy, can improve hardness and the intensity of contact, it is possible to reduce the formation speed of Argentous sulfide., delay contact by sulfur corrosion, extend its service life.
Detailed description of the invention
By specific embodiment, the present invention will further be specifically described below, but be not to be construed as limiting the scope of the present invention.
Embodiment 1
A kind of silver palladium contact production technology that the present invention provides, comprises the steps:
(1) casting: silver palladium alloy weight proportion is silver plate: palladium sponge=98.5:1.5, is put in batches in intermediate frequency furnace by the raw material of the silver plate prepared and palladium sponge, turns on the power heating, treats that silver plate and palladium sponge are completely dissolved, stirs with stone grinder rod；
Every stove needs to stir twice；
Casting die is fixed, heats with firelock, after 10min, silver water is slowly poured in mould, be cast into silver rod, then open mould, take out silver rod and be cooled to room temperature；
(2) wire drawing:
1. kicker: take the silver rod one cast, roll carefully with first set rolling roll machine, the most slowly extrude until first pair of rolling roll hole rolls from big to small by rolling roll hole；
2. tempering: putting in resistance furnace by the Rhizoma Humatae Tyermanni rolled, turn on the power heating, temperature controls at 700 DEG C；
3. silk is rolled: take out cooling after Rhizoma Humatae Tyermanni burning is red, put into by Rhizoma Humatae Tyermanni in the second set rolling roll machine, the most slowly extrude by rolling roll hole, until rolling roll hole rolls；Wire ring is good, put into resistance furnace tempering；
4. wire drawing: taking out the filamentary silver cooling in resistance furnace, rolled by silk head, then pass from the die hole of wire drawing on tip machine, described Die orifice diameter is to have hardness during 300mm, needs tempering；The filamentary silver being tempered continues dog after taking out cooling, sends into mould wire drawing, until pulling out from mould；
(3) contact is beaten
1. contact is beaten: silk head injecting the charging hole of contact machine, regulates entry table, turn on the power, contact machine works automatically；
2. washing: the contact accomplished fluently is put into polishing bucket in, add water and pour cleaning mixture into, rotary machine, wait contact be washed till do not have oil stain, shinny after use instead water clean；
3. drying: cleaned contact is put into dish, puts baking oven into, it is 100 DEG C that the temperature of baking oven controls, and takes out cooling after waiting the water on contact to dry completely；
(4) packaging
To check out with overlap and underproof silver palladium contact, qualified silver-colored palladium contact is weighed by every bag of 1kg, packed, the most labelled.
A diameter of 480mm or 460mm of described die hole or 440mm.
The silver-colored palladium contact that the production technology of silver palladium contact of the present invention prepares.
Palladium of the present invention and silver can infinitely dissolve each other, and form continuous print solid solution.Palladium and silver are melt into alloy, can improve hardness and the intensity of contact, it is possible to reduce the formation speed of Argentous sulfide., delay contact by sulfur corrosion, extend its service life.
Embodiment 2
Embodiment 2 is with the difference of embodiment 1: a kind of silver palladium contact production technology that the present invention provides, and comprises the steps:
In step (1), casting die is fixed, heats with firelock, after 15min, silver water is slowly poured in mould, be cast into silver rod, then open mould, take out silver rod and be cooled to room temperature；
In step (2), 2. tempering: putting in resistance furnace by the Rhizoma Humatae Tyermanni rolled, turn on the power heating, temperature controls at 750 DEG C；
4. wire drawing: taking out the filamentary silver cooling in resistance furnace, rolled by silk head, then pass from the die hole of wire drawing on tip machine, described Die orifice diameter is to have hardness during 480mm, needs tempering；The filamentary silver being tempered continues dog after taking out cooling, sends into mould wire drawing, until pulling out from mould；
In step (3), 3. drying: cleaned contact is put into dish, puts baking oven into, it is 110 DEG C that the temperature of baking oven controls, and takes out cooling after waiting the water on contact to dry completely.
Embodiment 3
Embodiment 3 is with the difference of embodiment 1: a kind of silver palladium contact production technology that the present invention provides, and comprises the steps:
In step (1), casting die is fixed, heats with firelock, after 20min, silver water is slowly poured in mould, be cast into silver rod, then open mould, take out silver rod and be cooled to room temperature；
In step (2), wire drawing: 2. tempering: putting in resistance furnace by the Rhizoma Humatae Tyermanni rolled, turn on the power heating, temperature controls at 900 DEG C；4. wire drawing: taking out the filamentary silver cooling in resistance furnace, rolled by silk head, then pass from the die hole of wire drawing on tip machine, described Die orifice diameter is to have hardness during 460mm, needs tempering；The filamentary silver being tempered continues dog after taking out cooling, sends into mould wire drawing, until pulling out from last mould.
In step (3), 3. drying: cleaned contact is put into dish, puts baking oven into, it is 120 DEG C that the temperature of baking oven controls, and takes out cooling after waiting the water on contact to dry completely.
The ultimate principle of the present invention, principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle that the present invention is simply described described in above-described embodiment and description; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and claimed scope is defined by appending claims, description and equivalent thereof.
Claims (3)
1. the production technology of a silver-colored palladium contact, it is characterised in that comprise the steps:
(1) casting: silver palladium alloy weight proportion is silver plate: palladium sponge=98.5:1.5, is put in batches in intermediate frequency furnace by the raw material of the silver plate prepared and palladium sponge, turns on the power heating, treats that silver plate and palladium sponge are completely dissolved, stirs with stone grinder rod；
Every stove needs to stir twice；
Casting die is fixed, heats with firelock, after 10-20min, silver water is slowly poured in mould, be cast into silver rod, then open mould, take out silver rod and be cooled to room temperature；
(2) wire drawing:
1. kicker: take the silver rod one cast, roll carefully with first set rolling roll machine, the most slowly extrude until first pair of rolling roll hole rolls from big to small by rolling roll hole；
2. tempering: putting in resistance furnace by the Rhizoma Humatae Tyermanni rolled, turn on the power heating, temperature controls at 700-900 DEG C；
3. silk is rolled: take out cooling after Rhizoma Humatae Tyermanni burning is red, put into by Rhizoma Humatae Tyermanni in the second set rolling roll machine, the most slowly extrude by rolling roll hole, until rolling roll hole rolls；Wire ring is good, put into resistance furnace tempering；
4. wire drawing: taking out the filamentary silver cooling in resistance furnace, rolled by silk head, then pass from the die hole of wire drawing on tip machine, described Die orifice diameter is to have hardness during 300-480mm, needs tempering；The filamentary silver being tempered continues dog after taking out cooling, sends into mould wire drawing, until pulling out from mould；
(3) contact is beaten
1. contact is beaten: silk head injecting the charging hole of contact machine, regulates entry table, turn on the power, contact machine works automatically；
2. washing: the contact accomplished fluently is put into polishing bucket in, add water and pour cleaning mixture into, rotary machine, wait contact be washed till do not have oil stain, shinny after use instead water clean；
3. drying: cleaned contact is put into dish, puts baking oven into, the temperature of baking oven controls as 100-120 DEG C, takes out cooling after waiting the water on contact to dry completely；
(4) packaging
To check out with overlap and underproof silver palladium contact, qualified silver-colored palladium contact is weighed by every bag of 1kg, packed, the most labelled.
The production technology of silver palladium contact the most according to claim 1, it is characterised in that: a diameter of 480mm or 460mm of described die hole or 440mm.
3. the silver-colored palladium contact that the production technology of the silver-colored palladium contact as described in any one of claim 1-2 prepares.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410460663.1A CN104240996B (en) | 2014-09-11 | 2014-09-11 | The production technology of silver palladium contact |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410460663.1A CN104240996B (en) | 2014-09-11 | 2014-09-11 | The production technology of silver palladium contact |
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| CN104240996A CN104240996A (en) | 2014-12-24 |
| CN104240996B true CN104240996B (en) | 2016-08-03 |
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| JP4834023B2 (en) * | 2007-03-27 | 2011-12-07 | 古河電気工業株式会社 | Silver coating material for movable contact parts and manufacturing method thereof |
| CN102842448A (en) * | 2011-06-24 | 2012-12-26 | 三菱综合材料C.M.I.株式会社 | Method of manufacturing composite contact |
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Denomination of invention: Production process for AgPd contact Effective date of registration: 20171120 Granted publication date: 20160803 Pledgee: Bank of Nanjing Jiangbei District branch of Limited by Share Ltd Pledgor: Yao Zhigang|NANJING DONGRUI PLATINUM CO., LTD. Registration number: 2017320000050 |
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Date of cancellation: 20190429 Granted publication date: 20160803 Pledgee: Bank of Nanjing Jiangbei District branch of Limited by Share Ltd Pledgor: Yao Zhigang|NANJING DONGRUI PLATINUM CO., LTD. Registration number: 2017320000050 |