CN102896236A - Method for preparing alloy steel/copper alloy integral materials - Google Patents
Method for preparing alloy steel/copper alloy integral materials Download PDFInfo
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- CN102896236A CN102896236A CN2012103439971A CN201210343997A CN102896236A CN 102896236 A CN102896236 A CN 102896236A CN 2012103439971 A CN2012103439971 A CN 2012103439971A CN 201210343997 A CN201210343997 A CN 201210343997A CN 102896236 A CN102896236 A CN 102896236A
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Abstract
The invention discloses a method for preparing alloy steel/copper alloy integral materials. The method includes: firstly, machining copper alloy and alloy steel into a tubular shape, machining the outer surface of the copper alloy and the inner surface of the steel alloy into tooth profile structures which are mutually matched and embedded; secondly, performing cleansing treatment on the surfaces of the two kinds of processed parts; thirdly, heating an alloy steel tube in the protective atmosphere environment; then, pressing a copper alloy steel tube into the alloy steel tube; and finally, placing the embedded alloy steel/copper alloy integral part materials in a hydrogen furnace for thermal insulation, and performing cooling after the alloy steel/copper alloy integral part materials are stably connected. The oxide on the surface is restored under the reducing atmosphere, further by means of the pressure stress generated due to the fact that the expansion of the copper alloy is larger than that of the steel alloy under high temperature, the solid diffusion between the copper alloy and the alloy steel is full, and combination with certain strength is formed.
Description
Technical field
The invention belongs to the technical field that different metal materials connects, be specifically related to a kind of steel alloy/tungsten/copper-alloy integrated material preparation method.
Background technology
Steel alloy has higher intensity, hardness, toughness, plasticity and certain solderability, often is used as the structural material in the engineering structure.Copper alloy has good wearability and conductibility.If steel alloy and two kinds of dissimilar materials of copper alloy method by materials processing is linked together, be prepared into steel alloy/tungsten/copper-alloy integrated material members, will work in coordination with this bi-material of performance performance advantage separately, implementation structure-function integration also will satisfy some engineering machinery critical components to the specific (special) requirements of material.
Summary of the invention
The purpose of this invention is to provide a kind of steel alloy/tungsten/copper-alloy integrated material preparation method, can work in coordination with this bi-material of performance performance advantage separately, satisfy some engineering machinery critical components to the specific (special) requirements of material.
Technical solution of the present invention is a kind of steel alloy/tungsten/copper-alloy integrated material preparation method, at first copper alloy and steel alloy is machined into cylindricly, and the outer surface of copper alloy and the inner surface of steel alloy are processed into the tooth-shape structure of working in coordination and inlaying; Secondly, the parts surface that two classes are processed carries out the cleaning processing; Again, the alloy steel cylinder heats in the protective atmosphere environment; Then, the copper alloy cylinder is pressed in the steel alloy cylinder; At last, the steel alloy of produced by insert molding/tungsten/copper-alloy integrated construction material is incubated in hydrogen furnace, both form stable the connection with when after, cooling.
Characteristics of the present invention also are,
Specifically implement according to following steps:
Step 1, machining
With copper alloy and steel alloy machined become columnar structured, the inwall of described copper alloy cylinder is along the axially extended tooth-shape structure of copper alloy cylinder, the tooth-shape structure of steel alloy cylinder outer wall for extending axially and match with the copper alloy cylinder inner wall along the steel alloy cylinder, and the margin of tolerance that makes the cylinder toothed external diameter of copper alloy and the cylinder toothed internal diameter of steel alloy can not be packed in the steel alloy cylinder for copper alloy cylinder at ambient temperature;
Step 2, steel alloy and copper alloy surface are processed
Steel alloy cylinder and copper alloy cylinder to step 1 processes at first, wash surface residue with gasoline, again remain in the greasy dirt on surface with Ultrasonic Cleaning;
Step 3, high temperature is inlayed
The steel alloy cylinder that step 2 surface treatment is finished is positioned in the atmosphere protection stove, the steel alloy cylinder is heated to 200-400 ℃ makes its expansion, be incubated and after 10-30 minute the steel alloy cylinder shifted out outside the stove, the copper alloy cylinder of handling well in the step 2 is pressed in the steel alloy cylinder fast, finish hot charging, obtain steel alloy/tungsten/copper-alloy integrated material members;
Step 4, the solid-state diffusion under the high temperature reduction condition connects
Step 3 is finished steel alloy behind the hot charging/tungsten/copper-alloy integrated material members continue to put into hydrogen atmosphere protection stove and carry out post bake, heating-up temperature is 700-1000 ℃, be incubated 1-3 hour, carries out machined after cooling off with stove.
Protective gas is nitrogen in the stove of atmosphere protection described in the step 3.
The furnace reduction of atmosphere protection described in the step 4 gas is hydrogen.
The invention has the beneficial effects as follows, utilize the thermal expansion coefficient difference of steel alloy and copper alloy, the mode by hot charging is embedded in copper alloy with steel alloy, realize both interference fit; Under high temperature reduction atmospheric condition subsequently, be incubated certain hour, utilize simultaneously the reducing atmosphere compression that also expansion of copper alloy produces greater than the expansion of steel alloy under the oxide of original surface and the high temperature, impel between copper alloy and the steel alloy solid-state diffusion more abundant, form high-intensity metallurgical binding.
Description of drawings
Fig. 1 is the process chart of steel alloy of the present invention/tungsten/copper-alloy integrated material preparation method;
Fig. 2 is the tooth-shape structure figure of preparation copper alloy in the method for the present invention;
Fig. 3 is the tubular construction figure of preparation steel alloy in the method for the present invention;
Fig. 4 prepares steel alloy/tungsten/copper-alloy integrated material members schematic diagram in the method for the present invention.
The specific embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
The invention provides a kind of steel alloy/tungsten/copper-alloy integrated material preparation method, at first copper alloy and steel alloy are machined into cylindricly, the outer surface of copper alloy and the inner surface of steel alloy are processed into the tooth-shape structure of working in coordination and inlaying; Secondly, the parts surface that two classes are processed carries out the cleaning processing; Again, the alloy steel cylinder heats in the protective atmosphere environment; Then, the copper alloy cylinder is pressed in the steel alloy cylinder; At last, the steel alloy of produced by insert molding/tungsten/copper-alloy integrated construction material is incubated in hydrogen furnace, allows copper alloy and steel alloy generation solid-state diffusion, both form stable the connection with when after, cooling.As shown in Figure 1, implement according to following steps:
Step 1, machining
With copper alloy and steel alloy machined become columnar structured.As shown in Figure 2, the inwall of described copper alloy cylinder is along the axially extended tooth-shape structure of copper alloy cylinder; As shown in Figure 3, the tooth-shape structure of steel alloy cylinder outer wall for extending axially and match with the copper alloy cylinder inner wall along the steel alloy cylinder, and the margin of tolerance that makes the cylinder toothed external diameter of copper alloy and the cylinder toothed internal diameter of steel alloy can not be packed in the steel alloy cylinder for copper alloy cylinder at ambient temperature;
Step 2, steel alloy and copper alloy surface are processed
To steel alloy cylinder and the copper alloy cylinder that step 1 processes, wash first greasy dirt and the impurity of remained on surface with gasoline; Further clean with ultrasonic wave again;
Step 3, high temperature is inlayed
The steel alloy cylinder that step 2 preliminary treatment is finished is positioned in the nitrogen atmosphere protection stove, the steel alloy cylinder is heated to 200-400 ℃ makes its expansion, be incubated and after 10-30 minute the steel alloy cylinder shifted out from stove, the copper alloy profile of tooth cylinder of handling well in the step 2 is pressed into fast in the steel alloy cylinder of heat, finish hot charging, obtain steel alloy/tungsten/copper-alloy integrated material members, as shown in Figure 4;
Step 4, the solid-state diffusion under the high temperature reduction condition connects
Step 3 is finished steel alloy behind the hot charging/tungsten/copper-alloy integrated material members to be continued to put into hydrogen atmosphere protection sintering furnace and carries out post bake; heating-up temperature 700-1000 ℃, be incubated 1-3 hour, wait steel alloy and copper alloy to realize after the abundant solid-state diffusion; with the stove cooling.
At last, according to the actual size of engineering component copper alloy inboard and the steel alloy outside are processed, obtain the integral material member.
Embodiment 1
With copper alloy and steel alloy machined become columnar structured, the inwall of copper alloy cylinder is along the axially extended tooth-shape structure of copper alloy cylinder, the tooth-shape structure of steel alloy cylinder outer wall for extending axially and match with the copper alloy cylinder inner wall along the steel alloy cylinder, and the margin of tolerance that makes the cylinder toothed external diameter of copper alloy and the cylinder toothed internal diameter of steel alloy can not be packed in the steel alloy cylinder for copper alloy cylinder at ambient temperature; Steel alloy cylinder and the copper alloy cylinder that processes washed surface residue with gasoline, remain in again the greasy dirt on surface with Ultrasonic Cleaning; The steel alloy cylinder is positioned in the atmosphere protection stove, the steel alloy cylinder is heated to 200 ℃ makes its expansion, be incubated and after 30 minutes the steel alloy cylinder shifted out outside the stove, the copper alloy cylinder is pressed in the steel alloy cylinder fast, finish hot charging, obtain steel alloy/tungsten/copper-alloy integrated material members; Steel alloy/tungsten/copper-alloy integrated material members is continued to put into hydrogen atmosphere protection stove carry out post bake, heating-up temperature is 900 ℃, is incubated 1 hour, carries out machined after cooling off with stove.
Embodiment 2
With copper alloy and steel alloy machined become columnar structured, the inwall of copper alloy cylinder is along the axially extended tooth-shape structure of copper alloy cylinder, the tooth-shape structure of steel alloy cylinder outer wall for extending axially and match with the copper alloy cylinder inner wall along the steel alloy cylinder, and the margin of tolerance that makes the cylinder toothed external diameter of copper alloy and the cylinder toothed internal diameter of steel alloy can not be packed in the steel alloy cylinder for copper alloy cylinder at ambient temperature; Steel alloy cylinder and the copper alloy cylinder that processes washed surface residue with gasoline, remain in again the greasy dirt on surface with Ultrasonic Cleaning; The steel alloy cylinder is positioned in the atmosphere protection stove, the steel alloy cylinder is heated to 300 ℃ makes its expansion, be incubated and after 20 minutes the steel alloy cylinder shifted out outside the stove, the copper alloy cylinder is pressed in the steel alloy cylinder fast, finish hot charging, obtain steel alloy/tungsten/copper-alloy integrated material members; Steel alloy/tungsten/copper-alloy integrated material members is continued to put into hydrogen atmosphere protection stove carry out post bake, heating-up temperature is 700 ℃, is incubated 2 hours, carries out machined after cooling off with stove.
Embodiment 3
With copper alloy and steel alloy machined become columnar structured, the inwall of copper alloy cylinder is along the axially extended tooth-shape structure of copper alloy cylinder, the tooth-shape structure of steel alloy cylinder outer wall for extending axially and match with the copper alloy cylinder inner wall along the steel alloy cylinder, and the margin of tolerance that makes the cylinder toothed external diameter of copper alloy and the cylinder toothed internal diameter of steel alloy can not be packed in the steel alloy cylinder for copper alloy cylinder at ambient temperature; Steel alloy cylinder and the copper alloy cylinder that processes washed surface residue with gasoline, remain in again the greasy dirt on surface with Ultrasonic Cleaning; The steel alloy cylinder is positioned in the atmosphere protection stove, the steel alloy cylinder is heated to 400 ℃ makes its expansion, be incubated and after 10 minutes the steel alloy cylinder shifted out outside the stove, the copper alloy cylinder is pressed in the steel alloy cylinder fast, finish hot charging, obtain steel alloy/tungsten/copper-alloy integrated material members; Steel alloy/tungsten/copper-alloy integrated material members is continued to put into hydrogen atmosphere protection stove carry out post bake, heating-up temperature is 1000 ℃, is incubated 1 hour, carries out machined after cooling off with stove.
Because there were significant differences in physics, chemical property and mechanical property etc. for steel alloy and copper alloy two class materials, the difference that method of the present invention utilizes copper alloy and steel alloy to fasten in expansion, carry out at a certain temperature cast setting after steel alloy and copper alloy is shaped, form and to utilize after the overall structure expansive force that produces under the high temperature to carry out solid-state diffusion under the self-generated pressure by bi-material, the final integral material that forms is except having steel alloy and copper alloy separately the performance, but the implementation structure function integration.
Method of the present invention elder generation's hot charging and then utilize the reducing atmosphere compression that also expansion of copper alloy produces greater than the expansion of steel alloy under the oxide of original surface and the high temperature, impel between copper alloy and the steel alloy solid-state diffusion more abundant, form the combination of some strength.
Advantage of the present invention is, provides a kind of and can prepare the integral material that has simultaneously steel alloy and copper alloy bi-material feature performance benefit, and what is more important, the integral material of the present invention's preparation is in conjunction with stable, and preparation technology is simple and reliable, and cost is low.
Claims (4)
1. steel alloy/tungsten/copper-alloy integrated material preparation method is characterized in that, at first copper alloy and steel alloy is machined into cylindricly, and the outer surface of copper alloy and the inner surface of steel alloy are processed into the tooth-shape structure of working in coordination and inlaying; Secondly, the parts surface that two classes are processed carries out the cleaning processing; Again, the alloy steel cylinder heats in the protective atmosphere environment; Then, the copper alloy cylinder is pressed in the steel alloy cylinder; At last, the steel alloy of produced by insert molding/tungsten/copper-alloy integrated construction material is incubated in hydrogen furnace, both form stable the connection with when after, cooling.
2. preparation method according to claim 1 is characterized in that, specifically implements according to following steps:
Step 1, machining
With copper alloy and steel alloy machined become columnar structured, the inwall of described copper alloy cylinder is along the axially extended tooth-shape structure of copper alloy cylinder, the tooth-shape structure of steel alloy cylinder outer wall for extending axially and match with the copper alloy cylinder inner wall along the steel alloy cylinder, and the margin of tolerance that makes the cylinder toothed external diameter of copper alloy and the cylinder toothed internal diameter of steel alloy can not be packed in the steel alloy cylinder for copper alloy cylinder at ambient temperature;
Step 2, steel alloy and copper alloy surface are processed
Steel alloy cylinder and copper alloy cylinder to step 1 processes at first, wash surface residue with gasoline, again remain in the greasy dirt on surface with Ultrasonic Cleaning;
Step 3, high temperature is inlayed
The steel alloy cylinder that step 2 surface treatment is finished is positioned in the atmosphere protection stove, the steel alloy cylinder is heated to 200-400 ℃ makes its expansion, be incubated and after 10-30 minute the steel alloy cylinder shifted out outside the stove, the copper alloy cylinder of handling well in the step 2 is pressed in the steel alloy cylinder fast, finish hot charging, obtain steel alloy/tungsten/copper-alloy integrated material members;
Step 4, the solid-state diffusion under the high temperature reduction condition connects
Step 3 is finished steel alloy behind the hot charging/tungsten/copper-alloy integrated material members continue to put into hydrogen atmosphere protection stove and carry out post bake, heating-up temperature is 700-1000 ℃, be incubated 1-3 hour, carries out machined after cooling off with stove.
3. according to claim 1 method is characterized in that, protective gas is nitrogen in the stove of atmosphere protection described in the step 3.
4. according to claim 1 method is characterized in that, the furnace reduction of atmosphere protection described in the step 4 gas is hydrogen.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105033226A (en) * | 2015-07-09 | 2015-11-11 | 西安理工大学 | Preparing method for CuW/Al bimetallic material of porous structure blocking layer |
Citations (6)
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| JPH02280931A (en) * | 1989-04-19 | 1990-11-16 | Nisshin Steel Co Ltd | Method for connecting tube |
| CN1504282A (en) * | 2002-11-27 | 2004-06-16 | 北京有色金属研究总院 | Process of composite stainless steel / copper double metal rod |
| CN101585141A (en) * | 2009-07-08 | 2009-11-25 | 华鹏集团有限公司 | Composite stock compression molding process |
| CN101670383A (en) * | 2009-07-20 | 2010-03-17 | 大连合生科技开发有限公司 | Method for manufacturing inner covered stainless steel compound steel pipe |
| CN201497368U (en) * | 2009-07-31 | 2010-06-02 | 马鞍山钢铁股份有限公司 | Composite roller for roller hearth furnace |
| CN101829775A (en) * | 2010-04-29 | 2010-09-15 | 西安西工大超晶科技发展有限责任公司 | Production method of stainless steel/copper composite material heat exchange pipe fitting |
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2012
- 2012-09-17 CN CN201210343997.1A patent/CN102896236B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02280931A (en) * | 1989-04-19 | 1990-11-16 | Nisshin Steel Co Ltd | Method for connecting tube |
| CN1504282A (en) * | 2002-11-27 | 2004-06-16 | 北京有色金属研究总院 | Process of composite stainless steel / copper double metal rod |
| CN101585141A (en) * | 2009-07-08 | 2009-11-25 | 华鹏集团有限公司 | Composite stock compression molding process |
| CN101670383A (en) * | 2009-07-20 | 2010-03-17 | 大连合生科技开发有限公司 | Method for manufacturing inner covered stainless steel compound steel pipe |
| CN201497368U (en) * | 2009-07-31 | 2010-06-02 | 马鞍山钢铁股份有限公司 | Composite roller for roller hearth furnace |
| CN101829775A (en) * | 2010-04-29 | 2010-09-15 | 西安西工大超晶科技发展有限责任公司 | Production method of stainless steel/copper composite material heat exchange pipe fitting |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105033226A (en) * | 2015-07-09 | 2015-11-11 | 西安理工大学 | Preparing method for CuW/Al bimetallic material of porous structure blocking layer |
| CN105033226B (en) * | 2015-07-09 | 2017-01-25 | 西安理工大学 | Preparing method for CuW/Al bimetallic material of porous structure blocking layer |
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