CN1728310A - Directional quick cooling method for manufacturing vacuum electrical contactor - Google Patents
Directional quick cooling method for manufacturing vacuum electrical contactor Download PDFInfo
- Publication number
- CN1728310A CN1728310A CN 200510026785 CN200510026785A CN1728310A CN 1728310 A CN1728310 A CN 1728310A CN 200510026785 CN200510026785 CN 200510026785 CN 200510026785 A CN200510026785 A CN 200510026785A CN 1728310 A CN1728310 A CN 1728310A
- Authority
- CN
- China
- Prior art keywords
- copper
- cooling
- powder
- infiltration
- protective atmosphere
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The method includes following steps: mixing an amount of copper powder and tungsten powder or tungsten carbide powder, and pressing the admixture to pressed compacts in suitable size; piling remanent copper (infiltration copper) on upper part of pressed compacts; placing pressed compacts onto combustion boat made from graphite. And pushing the boat into sintering oven in protective atmosphere, and under controlled temperature in 1100 DEG C to 1200 DEG C; after infiltration of copper, moving combustion boat quickly into cooling sleeve, and after adequate cooling, moving product out of the oven. The equipment includes sintering oven in protective atmosphere, and Directional quick cooling water sleeve, and cooling water only passes through the bottom of the sleeve. Advantages of the disclosed contactor are: high density, small air content, and face of weld covered by even copper layer, favorable performance of technique and use.
Description
Technical field
The present invention relates to directed cooling method for manufacturing of a kind of vacuum contact and process equipment, relate to directed cooling method for manufacturing of a kind of system copper tungsten or copper tungsten carbide tool vacuum contact and process equipment or rather, belong to the contact material processing technique field.
Background technology
Copper tungsten or copper tungsten carbide tool material are a kind of contact materials commonly used, and it has good anti-scorching, electrocorrosion-resisting, and cut-off current is moderate, are extensive use of in various vacuum contactors.In the processing of preparation vacuum contact material, adopt infiltration process to improve its density usually.
In existing infiltration process, as shown in Figure 1,1 infiltration copper, 2 more than needed is that normal tissues district, 3 is remaining hole district, and for improving density, infiltration copper is excessive configuration, and contact adopts natural cooling in infiltration end back.Because thermal capacity, its cooling generally is from top to bottom, from outside to inside.Like this, infiltration copper 1 more than needed is cooled and solidified at first, and this moment, the copper of contact inside is that normal tissues district 2 still is molten condition.The copper that contact is positioned at top layer, the infiltration copper 1 place more than needed feeding that can make progress forms the cavity and is remaining hole district 3.Reduced the density of product, increased gas content, product quality has been impacted.
Therefore, be necessary processing method and process equipment are improved.
Summary of the invention
The object of the present invention is to provide a kind of manufacturing density height, gas content is low, the imporous copper tungsten in top layer, copper tungsten carbide tool vacuum contact processing method and process equipment.
The object of the present invention is achieved like this, and its technical scheme is: an amount of copper powder is mixed with tungsten powder or charing tungsten powder, and be pressed into the pressed compact of suitable size, remaining copper (infiltration copper) overlays the top of pressed compact; Pressed compact is placed on graphite burns on the boat, push the protective atmosphere sintering furnace, temperature is controlled at 1100 ℃～1200 ℃ in the stove; After treating that infiltration of copper is finished, will burn the boat immigration rapidly and only be connected with in the coolant jacket of cooling water the bottom, and treat fully to come out of the stove after the cooling.
Main process for making is as follows:
1) tungsten powder or charing tungsten powder mix with an amount of copper powder, are pressed into the pressed compact of given size by suitable technology;
2) copper of surplus (suitably excessive) is placed on pressed compact top, and pressed compact places graphite to burn on the boat;
3) will burn the sintering furnace that boat pushes protective atmosphere, 1100 ℃～1200 ℃ of furnace temperature;
4) treat that infiltration is finished after, will burn boat rapidly and only move to the coolant jacket that the bottom is connected with cooling water;
5) fully come out of the stove after the cooling.
The directed cooling of vacuum electrical contact of the present invention process equipment comprises that the follow-on board-like bottom of sintering furnace of protective atmosphere is connected with the coolant jacket of cooling water.
Effect of the present invention: the contact of this method and device fabrication, density height, air content are little, solder side is covered with uniform copper layer, have good technology and serviceability.Has certain economic benefits.
Description of drawings
Fig. 1 is the generalized section of prior art vacuum electrical contact material natural cooling product;
Fig. 2 is the equipment and the technical process schematic diagram of prior art vacuum electrical contact material natural cooling;
Fig. 3 is the directed cooling processing of a vacuum electrical contact of the present invention schematic diagram;
Fig. 4 is the directed cooling of vacuum electrical contact of the present invention processing process figure.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.Here be illustrated respectively with two embodiment.
One, embodiment 1 (is example with copper 30 tungsten 70 vacuum contacts):
1) tungsten powder about 3 μ m with 200 purpose copper powders and average grain diameter, even by 70: 5 mixed;
2) contact compositions in accordance with regulations calculates contact density; Contact size in accordance with regulations and the contact density that has calculated calculate the weight of contact;
3) press 75% of contact weight, take by weighing mixed powder;
4) in suitable mould, powder is pressed into pressed compact;
5) take by weighing the infiltration copper billet, weight is that 25% of contact weight increases by 0.1～0.5 gram again;
6) infiltration copper is placed on the pressed compact, be placed on graphite and burn on the boat;
7) will burn boat and push the protective atmosphere sintering furnace, 1150 ℃ of furnace temperature;
8) treat that infiltration is finished after, will burn boat rapidly and move into the coolant jacket that bottom only is connected with cooling water;
9) fully come out of the stove after the cooling.
Two, embodiment 2 (is example with copper 40 tungsten carbide tools 60 vacuum contacts):
1) the charing tungsten powder about 3 μ m with 200 purpose copper powders and average grain diameter, even by 60: 15 mixed;
2) contact compositions in accordance with regulations calculates contact density; Contact size in accordance with regulations and the contact density that has calculated calculate the weight of contact;
3) press 75% of contact weight, take by weighing mixed powder;
4) in suitable mould, powder is pressed into pressed compact;
5) take by weighing the infiltration copper billet, weight is that 25% of contact weight increases by 0.1～0.5 gram again;
6) infiltration copper is placed on the pressed compact, be placed on graphite and burn on the boat;
7) will burn boat and push the protective atmosphere sintering furnace, 1150 ℃ of furnace temperature;
8) treat that infiltration is finished after, will burn boat rapidly and move into the coolant jacket that bottom only is connected with cooling water;
9) fully come out of the stove after the cooling.
More than two embodiment are the directed cooling fast of two kinds of vacuum contact materials processing process.
The directed cooling of vacuum electrical contact of the present invention process equipment comprises the sintering furnace 4 of protective atmosphere and the coolant jacket 6 that follow-on board-like bottom is connected with cooling water.
Claims (5)
1, a kind of vacuum electrical contact directional quick cooling method for manufacturing is characterized in that: this method comprises the steps: that the just an amount of copper powder of the first step mixes with tungsten powder or charing tungsten powder, and is pressed into the pressed compact of suitable size; Second step overlayed remaining copper (infiltration copper) on the top of pressed compact; The 3rd step was placed on graphite with pressed compact and burns on the boat, pushed the protective atmosphere sintering furnace; The 4th step will be burnt the boat immigration rapidly and only be connected with in the coolant jacket of cooling water the bottom after being treated that infiltration of copper is finished; The 5th step treated fully to come out of the stove after the cooling.
2, directional quick cooling method for manufacturing as claimed in claim 1 is characterized in that: described copper powder and tungsten powder, its copper powder are 200 orders and the tungsten powder of average grain diameter about 3 μ m, and be even by 70: 5 mixed.
3, directional quick cooling method for manufacturing as claimed in claim 1 is characterized in that: described copper powder and charing tungsten powder, its copper powder are 200 orders and the charing tungsten powder of average grain diameter about 3 μ m, and be even by 60: 15 mixed.
4, directional quick cooling method for manufacturing as claimed in claim 1 is characterized in that: 1150 ℃ of the Control for Kiln Temperature of described protective atmosphere sintering furnace.
5, the directed cooling fast of a kind of vacuum electrical contact process equipment comprises protective atmosphere sintering furnace 4 and cooling jacket (5), it is characterized in that: described cooling jacket (5) is that a board-like bottom is connected with the directed cooling jacket (6) of cooling water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510026785 CN1728310A (en) | 2005-06-15 | 2005-06-15 | Directional quick cooling method for manufacturing vacuum electrical contactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510026785 CN1728310A (en) | 2005-06-15 | 2005-06-15 | Directional quick cooling method for manufacturing vacuum electrical contactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1728310A true CN1728310A (en) | 2006-02-01 |
Family
ID=35927501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510026785 Pending CN1728310A (en) | 2005-06-15 | 2005-06-15 | Directional quick cooling method for manufacturing vacuum electrical contactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1728310A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624662B (en) * | 2009-07-08 | 2011-04-27 | 中南大学 | Method for preparing W-Cu alloy in microwave infiltration way |
| CN103057202A (en) * | 2013-01-05 | 2013-04-24 | 江苏鼎启科技有限公司 | Lamination-structured heat sink material and preparation method |
| CN113921310A (en) * | 2021-11-01 | 2022-01-11 | 西安西电高压开关有限责任公司 | Process manufacturing method of high-performance arc contact |
-
2005
- 2005-06-15 CN CN 200510026785 patent/CN1728310A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101624662B (en) * | 2009-07-08 | 2011-04-27 | 中南大学 | Method for preparing W-Cu alloy in microwave infiltration way |
| CN103057202A (en) * | 2013-01-05 | 2013-04-24 | 江苏鼎启科技有限公司 | Lamination-structured heat sink material and preparation method |
| CN103057202B (en) * | 2013-01-05 | 2015-05-20 | 江苏鼎启科技有限公司 | Lamination-structured heat sink material and preparation method |
| CN113921310A (en) * | 2021-11-01 | 2022-01-11 | 西安西电高压开关有限责任公司 | Process manufacturing method of high-performance arc contact |
| CN113921310B (en) * | 2021-11-01 | 2024-03-26 | 西安西电高压开关有限责任公司 | Technological manufacturing method of arc contact |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2238281C (en) | Metal powder granulates, method for their production and use of the same | |
| EP1900488B1 (en) | METHOD FOR PRODUCING A CERAMIC SUBSTRATE IN Si3N4 | |
| KR950005502B1 (en) | Wear-resistant member | |
| US6309589B1 (en) | Method for producing a pin heater | |
| CN107311686B (en) | Preparation process of graphite electrode | |
| CN1728310A (en) | Directional quick cooling method for manufacturing vacuum electrical contactor | |
| CN102204021A (en) | Method for producing a semi-finished part and semi-finished part for electrical contacts and contact piece | |
| CN108588471B (en) | One-step synthesis method of copper-based electrode material containing nano zirconium carbide ceramic particles | |
| US8993917B2 (en) | Fabrication method of electrode for spark surface modification, and spark surface modification electrode | |
| CN110499435B (en) | Silver-based electric contact material and preparation method thereof | |
| JP3765840B2 (en) | Carbon material manufacturing method | |
| CN111618297A (en) | Preparation method of rapid sintering forming silver-based contact | |
| CN108570570B (en) | Nano zirconium carbide ceramic reinforced copper-based electrode material and preparation method thereof | |
| CN101075501A (en) | Silver-economizing low-voltage electrical-appliance contact materials | |
| CN1644727A (en) | Copper-tungsten-carbon-titanium-rare earth alloy material and production thereof | |
| CN1212288C (en) | Aluminium nitride ceramic with high heat conductivity | |
| CN112981168B (en) | Powder hot-forged copper-based pantograph slide plate material and preparation method thereof | |
| JPH09321347A (en) | Thermoelectric conversion material and manufacture thereof | |
| CN1076468C (en) | Spallingproof, crackingproof and oxidizingproof plate | |
| CN100451160C (en) | Preparing process of graphite target containing dopant element | |
| CN1300813C (en) | High-voltage loaded switch device | |
| JPH0729446A (en) | Manufacture of electrode for vacuum interrupter | |
| KR102532974B1 (en) | Method of manufacturing tungsten copper composite, tungsten copper composite having high toughness and high thermal conductivity, and manufacturing method for the same | |
| CN1023571C (en) | Tungsten stannum fluxing agent and its making method | |
| CN1071480C (en) | Electrical contact compositions and novel manufacturing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |