CN102773462B - Method for preparing CuW/ZL101A bimetal composite materials - Google Patents
Method for preparing CuW/ZL101A bimetal composite materials Download PDFInfo
- Publication number
- CN102773462B CN102773462B CN201210260510.3A CN201210260510A CN102773462B CN 102773462 B CN102773462 B CN 102773462B CN 201210260510 A CN201210260510 A CN 201210260510A CN 102773462 B CN102773462 B CN 102773462B
- Authority
- CN
- China
- Prior art keywords
- zl101a
- cuw
- alloy
- welding
- composite material
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The invention discloses a method for preparing CuW/ZL101A bimetal composite materials. The method includes: alloy ingot machining, preprocessing before alloy fusion welding, liquid-solid fusion welding and material machining. The method solves the problem that the existing welding method cannot achieve no-defect connection of the combined interface. The method is characterized in that ZL101A melt and high-melting-point CuW alloy generate liquid-solid diffusing and reaction to form a metallurgical bonding interface transition layer so as to ensure interface combining strength of the CuW/ZL101A bimetal composite materials. The preparing process includes: surface cleansing processing of ZL101A and CuW, vertical liquid-solid fusion welding of vacuum and Ar in atmosphere protection environment and cooling forming.
Description
Technical field
The invention belongs to technical field prepared by double metallic composite material, be specifically related to a kind of preparation method of CuW/ZL101A double metallic composite material.
Background technology
CuW alloy is that the class prepared by powder metallurgy sintered infiltration method has high strength and hardness, high electric conductivity, and has the pseudo-alloy of stronger arc ablation resistance ability, is widely used in switch industry; Especially the CuW/CuCr integral material that by infiltration method, itself and chromium-bronze is linked together and formed, becomes the leading material of high pressure and extra-high voltage switch Self-help contact terminal.Therefore but along with the aggravation of market competition, the high cost of contact material is called one of Main Bottleneck restricting High-voltage Switchgear Industry, in the urgent need to the Self-help contact terminal material of developing low-cost.
ZL101A is a kind of of cast Al-Si alloy, and it has good casting character, has close intensity, hardness, wearability and electric conductivity with copper and copper alloy, and than copper and copper alloy low price.If CuW pseudo-alloy and two kinds of dissimilar materials of ZL101A are linked together by welding process, be prepared into CuW/ZL101A double metallic composite material, become the substitute of part to the less demanding Self-help contact terminal of electrical conductivity, will effectively save the cost of contact material.
Owing to there is significant difference at aspects such as physics, chemistry and mechanical properties in CuW pseudo-alloy and ZL101A bi-material, adopt traditional welding method, easily at welding point, producing stress concentrates, cause various weld cracks, and unavoidably there is other weld defect, cannot reach the requirement to combination interface intensity of CuW/ZL101A integral contact material.Therefore, need to develop the interface connected mode of the flawless CuW of a kind of high reliability and ZL101A.
Summary of the invention
The preparation method who the object of this invention is to provide a kind of CuW/ZL101A double metallic composite material, has solved existing welding method and cannot realize the connection of combination interface zero defect, causes various weld cracks, has the problem of other weld defect.
Technical scheme of the present invention is, a kind of preparation method of CuW/ZL101A double metallic composite material implements according to following steps:
Step 1, alloy pig machined
CuW alloy pig and ZL101A alloy pig are processed respectively to clean surface, and guarantee to put into the metal mold crucible of corresponding size;
Step 2, pretreatment before alloy welding
First, with metallographic fine sandpaper polishing ZL101A alloy cast ingot, except descale; Secondly, with circulating water, rinse surface residue; Again, with Ultrasonic Cleaning, remain in surperficial greasy dirt, last, with Warm Wash, further remove remaining greasy dirt, phosphoric acid electrolytic etching 10-50s for CuW alloy;
Step 3, liquid-solid welding
Two kinds of alloys that step 2 pretreatment is completed are positioned in the metal mold crucible of corresponding size, and ZL101A alloy pig is vertically placed on CuW alloy top, carries out together vertical welding subsequently with metal mold crucible in vacuum drying oven,
First, vacuum drying oven is vacuumized, make vacuum be not more than 5.0 * 10
-2pa; Heating rate with 16-18 ℃/min heats, when in stove, temperature reaches 450 ℃-500 ℃, while continuing to be warming up to 670 ℃-720 ℃ with the heating rate of 7-10 ℃/min again, insulation 30min then, fills Ar in stove, when the plastic tube place of giving vent to anger of vacuum tube furnace fills after the bubble stabilizes in running water water bottle, insulation 30min, is cooled to normal temperature afterwards, obtains CuW/ZL101A double metallic composite material;
Step 4, machined
The CuW/ZL101A double metallic composite material of processing through step 4 is carried out after machined.
Feature of the present invention is also,
In step 2, the phosphoric acid on electrolytic etching CuW surface adopts the phosphoric acid that volumetric concentration is 75%.
The invention has the beneficial effects as follows, copper-tungsten and alusil alloy are all the electrical materials of conduction, heat conduction, by both being carried out to certain surface cleaning, process and liquid-solid welding, promote liquid phase with solid phase counterdiffusion and react more abundant, and bond strength is high.
Accompanying drawing explanation
Fig. 1 is the preparation method's of a kind of CuW/ZL101A double metallic composite material of the present invention process chart;
Fig. 2 is the low power SEM photo of the CuW/ZL101A double metallic composite material interface transition layer prepared of method of the present invention;
Fig. 3 is the high power SEM photo of the CuW/ZL101A double metallic composite material interface transition layer prepared of method of the present invention.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
The invention provides a kind of preparation method of CuW/ZL101A double metallic composite material, is the method for the refractory metal welding of a kind of low-melting-point metal and powder metallurgy forming.First CuW and ZL101A alloy surface are carried out to purifying processing; Secondly, in vacuum and Ar atmosphere protection environment, carry out vertical (upper ZL101A, lower CuW) welding; Finally, cooling forming.Flow process as shown in Figure 1, specifically according to following steps, implement:
Step 1, alloy pig machined
CuW alloy pig and ZL101A ingot are processed respectively to clean surface, and guarantee to put into the metal mold crucible of corresponding size;
Step 2, pretreatment before alloy welding
First, with metallographic fine sandpaper polishing alusil alloy, except descale; Secondly, with circulating water, rinse surface residue; Again, with Ultrasonic Cleaning, remain in surperficial greasy dirt, last, with Warm Wash, further remove remaining greasy dirt, it is the electrolytic etching 10-50s of 75% phosphoric acid that CuW surface adopts volumetric concentration.
Step 3, liquid-solid welding
Two kinds of alloys that step 2 pretreatment is completed are positioned in the metal mold crucible in step 1, and ZL101A alloy is vertically placed on CuW alloy top, carries out together subsequently vertical welding in vacuum drying oven.First, vacuum drying oven is vacuumized, make vacuum be not more than 5.0 * 10
-2pa; Heating rate with 16-18 ℃/min heats, when in stove, temperature reaches 450 ℃-500 ℃, while continuing to be warming up to 670 ℃-720 ℃ with the heating rate of 7-10 ℃/min again, insulation 30min, then, in stove, fill Ar, when the plastic tube place of giving vent to anger fills after the bubble stabilizes in running water water bottle, insulation 30min is cooled to normal temperature afterwards in air.Vacuum is the purified treatment to ZL101A liquation and linkage interface.Ar atmosphere is the enforcement for the ease of cooling forming.
Step 4, carries out after machined CuW/ZL101A double metallic composite material,, and can observe the transition zone of the clear combination in interface.
Embodiment 1
CuW alloy cast ingot and ZL101A alloy cast ingot are processed respectively to clean surface, and guarantee to put into the metal mold crucible of corresponding size; With metallographic fine sandpaper polishing ZL101A alloy cast ingot, except descale; With circulating water, rinse surface residue again; With Ultrasonic Cleaning, remain in surperficial greasy dirt, last, with Warm Wash, further remove remaining greasy dirt.It is the electrolytic etching 10-50s of 75% phosphoric acid that CuW surface adopts volumetric concentration.
Two kinds of alloys that pretreatment is completed are positioned in the metal mold crucible of corresponding size, and ZL101A alloy is vertically stacked in CuW alloy top, carries out together subsequently vertical welding in vacuum drying oven.First, vacuum drying oven is vacuumized, make vacuum be not more than 5.0 * 10
-2pa; Heating rate with 16-18 ℃/min heats, when in stove, temperature reaches 450 ℃-500 ℃, while continuing to be warming up to 670 ℃ with the heating rate of 7-10 ℃/min again, insulation 30min then, fills Ar in stove, when the plastic tube place of giving vent to anger fills after the bubble stabilizes in running water water bottle, insulation 30min, then cooling, obtain this composite.
Embodiment 2
Two kinds of alloys that pretreatment is completed are positioned in the metal mold crucible of corresponding size, and ZL101A alloy is vertically stacked in CuW alloy top, carries out together subsequently vertical welding in vacuum drying oven.First, vacuum drying oven is vacuumized, make vacuum be not more than 5.0 * 10
-2pa; Heating rate with 16-18 ℃/min heats, when in stove, temperature reaches 450 ℃-500 ℃, while continuing to be warming up to 690 ℃ with the heating rate of 7-10 ℃/min again, insulation 30min then, fills Ar in stove, when the plastic tube place of giving vent to anger fills after the bubble stabilizes in running water water bottle, insulation 30min, then cooling, obtain this composite.
Embodiment 3
Two kinds of alloys that pretreatment is completed are positioned in the metal mold crucible of corresponding size, and ZL101A alloy is vertically stacked in CuW alloy top, carries out together subsequently vertical welding in vacuum drying oven.First, vacuum drying oven is vacuumized, make vacuum be not more than 5.0 * 10
-2pa; Heating rate with 16-18 ℃/min heats, when in stove, temperature reaches 450 ℃-500 ℃, while continuing to be warming up to 720 ℃ with the heating rate of 7-10 ℃/min again, insulation 30min then, fills Ar in stove, when the plastic tube place of giving vent to anger fills after the bubble stabilizes in running water water bottle, insulation 30min, then cooling, obtain this composite.
Preparation technology in three listed embodiment as shown in Figure 1 above.The double metallic composite material combination interface transition zone microstructure morphology of preparing as shown in Figure 2; Fig. 3 is the partial enlarged drawing of interface transition layer; Interface transition layer is to ZL101A side elongation growth with dendroid as seen in Figure 2, CuW matrix as seen in Figure 2, under the high temperature action of ZL101A melt, W in CuW is due to heat erosion and the dissolution of ZL101A melt, original complete W skeleton is dissolved on a small quantity, along with the counterdiffusion of Cu atom in the self-diffusion of ZL101A melt and CuW, fragmentary is distributed in interfacial diffusion transition zone.Therefore, fusion, heat of solution and the diffusion of Shi You interface, the interface atom of liquid-solid welding CuW/ZL101A double metallic composite material realize metallurgical binding.
Advantage of the present invention is, develop a kind of new CuW/ZL101A double metallic composite material, the method of the refractory metal welding of a kind of low-melting-point metal and powder metallurgy forming is provided simultaneously, has solved the combination interface zero defect connectivity problem that existing welding method cannot realize.What is more important, the present invention can be alleviated the anxiety of copper material, and easily processing, recyclable cycling and reutilization, and cost is low.
Claims (1)
1. a preparation method for CuW/ZL101A double metallic composite material, is characterized in that, according to following steps, implements:
Step 1, alloy pig machined
CuW alloy pig and ZL101A alloy pig are processed respectively to clean surface, and guarantee to put into the metal mold crucible of corresponding size;
Step 2, pretreatment before alloy welding
First, with metallographic fine sandpaper polishing ZL101A alloy cast ingot, except descale; Secondly, with circulating water, rinse surface residue; Again, with Ultrasonic Cleaning, remain in surperficial greasy dirt, last, with Warm Wash, further remove remaining greasy dirt, the phosphoric acid electrolytic etching 10-50s that CuW alloy is 75% by volumetric concentration;
Step 3, liquid-solid welding
Two kinds of alloys that step 2 pretreatment is completed are positioned in the metal mold crucible of corresponding size, and ZL101A alloy pig is vertically placed on CuW alloy top, carries out together vertical welding subsequently with metal mold crucible in vacuum tube furnace,
First, vacuum drying oven is vacuumized, make vacuum be not more than 5.0 * 10
-2pa; Heating rate with 16-18 ℃/min heats, when in stove, temperature reaches 450 ℃-500 ℃, while continuing to be warming up to 670 ℃-720 ℃ with the heating rate of 7-10 ℃/min again, insulation 30min then, fills Ar in stove, when the plastic tube place of giving vent to anger of stove fills after the bubble stabilizes in running water water bottle, insulation 30min, is being cooled to normal temperature afterwards, obtains CuW/ZL101A double metallic composite material;
Step 4, machined
The CuW/ZL101A double metallic composite material of processing through step 4 is carried out after machined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210260510.3A CN102773462B (en) | 2012-07-26 | 2012-07-26 | Method for preparing CuW/ZL101A bimetal composite materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210260510.3A CN102773462B (en) | 2012-07-26 | 2012-07-26 | Method for preparing CuW/ZL101A bimetal composite materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102773462A CN102773462A (en) | 2012-11-14 |
| CN102773462B true CN102773462B (en) | 2014-02-19 |
Family
ID=47118695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210260510.3A Expired - Fee Related CN102773462B (en) | 2012-07-26 | 2012-07-26 | Method for preparing CuW/ZL101A bimetal composite materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102773462B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104259439B (en) * | 2014-09-16 | 2016-10-05 | 西安理工大学 | A kind of preparation method of aluminium bronze-rustless steel double-metal composite |
| CN104384737B (en) * | 2014-09-19 | 2016-06-01 | 西安理工大学 | The liquid-solid method of attachment of a kind of copper tungsten pseudoalloy and stainless steel abnormal member |
| CN113278836B (en) * | 2021-04-23 | 2022-04-08 | 西安理工大学 | Method for preparing CuW/low-carbon steel heterogeneous bimetallic material |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3133273B2 (en) * | 1997-03-28 | 2001-02-05 | 株式会社栗本鐵工所 | Composite centrifugal casting method |
| CN2484628Y (en) * | 2001-07-13 | 2002-04-03 | 段沛林 | Intensified high-voltage electric probe |
| JP2004183052A (en) * | 2002-12-04 | 2004-07-02 | Mitsubishi Heavy Ind Ltd | Highly corrosion resistant high temperature member, and production method therefor |
| CN101831584A (en) * | 2009-03-10 | 2010-09-15 | 北京有色金属研究总院 | High heat-conducting copper-based composite material and preparation method thereof |
| CN101552147B (en) * | 2009-03-30 | 2011-03-09 | 西安理工大学 | Preparation method of CuW/CrCu integral high-voltage electrical contacts |
-
2012
- 2012-07-26 CN CN201210260510.3A patent/CN102773462B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102773462A (en) | 2012-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102513721B (en) | A kind of high-strength aluminum alloy solder for brazing at medium temperature and preparation method thereof | |
| CN102626837B (en) | Moderate temperature copper-based solder and preparation method thereof | |
| CN108971801B (en) | Ti-Zr-Ni-Fe-Cu-Co-Mo-B brazing filler metal and preparation method and application thereof | |
| CN102179642B (en) | Copper-based brazing filler metal and preparation method thereof | |
| CN102773462B (en) | Method for preparing CuW/ZL101A bimetal composite materials | |
| CN104128713B (en) | The preparation method of Al-Si-Cu-Zn-Ti five yuan of foil-shaped brazing materials of high-volume fractional SiCp/Al composite | |
| CN106475679A (en) | A kind of copper and the discontinuous pressure process diffusion connecting process of the unrepeatered transmission of aluminium alloy | |
| CN104451297A (en) | Casting technology of aluminum bronze series aluminum alloy circular ingots | |
| CN101269436B (en) | Aluminum-titanium alloy dissimilar metal scraping and wiping agitation soldering method | |
| CN102632347A (en) | Aluminium matrix composite, brazing filler metal for aluminium alloy and brazing method | |
| CN101664864B (en) | Moderate temperature copper based brazing filler metal and preparation method thereof | |
| CN105345304B (en) | A kind of supersaturated solder and preparation method thereof | |
| CN103801783B (en) | High-volume fractional silicon-carbide particle reinforced aluminium-base composite material solid-liquid two-phase region method for welding | |
| CN102626838A (en) | Silver-based cadmium-free medium temperature brazing filler metal and preparation method thereof | |
| CN102026467B (en) | Silver-hafnium alloy material for DC arc air plasma torch cathode and preparation method thereof | |
| CN106676292B (en) | A kind of preparation method of Al-CuZn bimetallics conductive material | |
| CN104724710B (en) | A kind of method of electroslag remelting purifying industrial silicon synchronous with alloy liquation refining | |
| CN104028982B (en) | The preparation method of a kind of meteor plektron CuW alloy and steel composites structure contact | |
| CN103286474B (en) | Fusion reactor cooling tube connects the special solder of ultra-low temperature surroundings | |
| CN105118702B (en) | Cu alloy material powder composition, composite layer, electrical contact and preparation method thereof | |
| CN104259686A (en) | Preparation method of brazing material for welding of aluminum foils | |
| CN111945189A (en) | Lap joint type copper-aluminum integrated beam for zinc electrodeposition and preparation method thereof | |
| CN105177626A (en) | Method for manufacturing novel energy-saving anode steel jaw | |
| CN104028888B (en) | A kind of preparation method of resistance contact head | |
| CN103722261A (en) | Low frequency and amplitude reciprocating friction assisted low-temperature active soft soldering 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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20150726 |
|
| EXPY | Termination of patent right or utility model |