CN104874636A - High-temperature preparation method of titanium-steel composite plate with copper as middle layer - Google Patents
High-temperature preparation method of titanium-steel composite plate with copper as middle layer Download PDFInfo
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- CN104874636A CN104874636A CN201510333072.2A CN201510333072A CN104874636A CN 104874636 A CN104874636 A CN 104874636A CN 201510333072 A CN201510333072 A CN 201510333072A CN 104874636 A CN104874636 A CN 104874636A
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Abstract
The invention belongs to the field of preparation and machining of a titanium-steel composite plate, and particularly relates to a preparation method of the titanium-steel composite plate with copper as a middle layer. The method comprises the following steps: a, assembling: symmetrically assembling according to the sequence of steel plate/titanium plate/copper foil/steel plate, and welding to obtain a combined blank; b, heating: heating the combined blank at 980-1,050 DEG C for 2-6 hours; c, rolling: rolling the heated combined blank for at least two times, wherein the total deformation of the rolling is greater than or equal to 80 percent, and the rolling speed is 0.1-1 m/s; d, refining: separating the titanium-steel interface to obtain the titanium-steel composite plate. The process of the method is simple, the problem of interface oxidation in the preparation process of the titanium-steel composite plate can be solved, the obtained titanium-steel composite plate has a good shape, the binding effect is good, and the binding strength is greater than 260 MPa.
Description
Technical field
The invention belongs to titanium steel composite board and prepare manufacture field, being specifically related to a kind of take copper as the high temperature preparation method of intermediate layer titanium steel composite board.
Background technology
Titanium has good physics, chemical property and mechanical performance, but its smelting technique is complicated, and production cost is high, and therefore the price of titanium is very expensive, largely limits popularization and the application of titanium.Titanium and other metal (as steel, copper, aluminium etc.) are combined with each other, make metallic composite, both the excellent properties of titanium can have been played, can greatly reduce costs again, thus a lot of to the research of similar material in recent years, wherein titanium-steel composite material is widely used in the industrial department such as chemical industry, oil with its high strength, excellent corrosion resisting property and significant economic benefit.
At present, the mode of production of titanium-steel composite board mainly contains four kinds: Explosion composite method, diffusion composite algorithm, blast-rolling and Direct Rolling method.Direct Rolling method is current development trend, compares all the other 3 kinds of modes of production, and have size of product flexible, stable performance, easily realizes the advantage such as mechanization, automated job.Titanium plate (composite wood) and steel plate (base material) are assembled with Embedded slab by Direct Rolling method at first.At this moment, between titanium plate and steel, put into suitable centre embed material, then adopt electron beam welding under a high vacuum.After finally putting into heating furnace heating, heavy plate mill is suppressed and rolls required thickness, such titanium plate and steel plate then really engage.Finally periphery is cut, be separated into 2 plates.
Because the metallicity of titanium is active, when being connected with most metal, brittlement phase will be formed on interface.From titanium-iron binary phase diagraml, iron and titanium very easily generate intermetallic compound, as TiFe, TiFe
2deng, make combination interface brittle because intermetallic compound has larger fragility, under the effect of stress, easily cause cracking, bond strength is declined.Titanium undergoes phase transition when temperature is 1155K, and existing with body-centered cubic lattic β-Ti form during high temperature, is the α-Ti of solid matter cubic lattice when temperature is lower.The solid solubility of iron in α-Ti is very little, is at room temperature only 0.05% ~ 0.1%, under eutectoid temperature, be no more than 0.5%.Iron is β-Ti stable element, and large than in α-Ti of solid solubility in β-Ti, when eutectic temperature 1355K, the solid solubility of iron in β-Ti reaches maximum 25%.In the β-Ti after solid solution iron, its phase point temperature can be made to reduce, when in β-Ti, iron content reaches certain value, β-Ti will be retained to room temperature, along with increasing further of iron content in β-Ti, in cooling procedure, the supersaturation of iron in titanium will be caused, and then exceed its solid solubility in titanium and form intermetallic compound.The main method reducing compound generation between titanium and steel, inserts suitable metal do intermediate layer, and then stop the phase counterdiffusion of the element such as titanium, iron.
Application number is " CN101992344A ", denomination of invention discloses a kind of titanium plate equal with length and width size and steel plate for " a kind of preparation method of titanium-steel composite board ", removing rusty scale and oxide layer, then relatively overlap and make composite blank, again by composite blank surrounding titanium plate side seal, vacuumize in vacuum chamber with after clamp combination blank, make vacuum reach 10
-2during MPa, through the seam of combination blank surrounding, 0.1 ~ 2h is incubated at being heated to 600 ~ 1200 DEG C again in heating furnace, last rolling at 550 ~ 1150 DEG C, mill speed 0.3 ~ 2m/s, overall reduction > 30%, first reduction ratio > 5%, obtain the technical scheme of titanium-steel composite board.This process take titanium-steel as the composite plate of former material, in heating process, because the metallicity of titanium is active, iron and titanium very easily generate intermetallic compound, make combination interface brittle because intermetallic compound has larger fragility, under the effect of stress, easily cause cracking, bond strength is declined.
Application number is " 201410446843.4 ", denomination of invention is " a kind of method manufacturing titanium steel composite board ", specifically disclose and adopt plating or chemical plating method plated nickel, copper or pure iron on the surface to be composite of steel plate or steel billet to form coating, thus to improve the bond strength at interface.Adopt the method can improve interface bond strength to a certain extent, but because coating is thinner, under high temperature or long-time heating condition, the element such as titanium, iron can penetrate coating, form frangible compounds at interface, the object stoping the counterdiffusion of element phase can not be played; Meanwhile, because coated metal does not have good ductility, in the operation of rolling, the problem that interface state is uneven can be caused, cause the titanium steel composite board product quality adopting the method to prepare well to be ensured.
Summary of the invention
It take copper as the high temperature preparation method of intermediate layer titanium steel composite board that technical problem to be solved by this invention is to provide a kind of, to prevent the generation of titanium/iron compound on titanium steel composite board preparation process median surface, utilize titanium and copper to generate liquid phase compound in heating process simultaneously, in the operation of rolling subsequently, liquid phase is extruded, obtain newborn face that is clean, activation, thus realize the object of the good combination at titanium steel interface.
To achieve these goals, the invention provides a kind of take copper as the high temperature preparation method of intermediate layer titanium steel composite board, comprises the following steps:
A, assembly: carry out symmetrical assembly according to the order of steel plate/titanium plate/Copper Foil/steel plate, then by the seam of blank surrounding, blank inside carries out vacuumizing process, obtain combining blank; Wherein, apply interleaving agent at the adjacent surface of steel plate and titanium plate, the thickness of described Copper Foil is 0.3 ~ 0.8mm;
B, heating: blank will be combined at 980 ~ 1050 DEG C of heating 2 ~ 6h;
C, rolling: the combination blank after heating is carried out the rolling that at least twice are secondary, wherein, start rolling temperature 950 DEG C, finishing temperature is 600 ~ 700 DEG C; Front two pass deformation > 20%, rolling total deformation is >=80%, and mill speed is 0.1 ~ 1m/s;
D, finishing: air cooling, to room temperature, is separated the titanium steel interface of coating interleaving agent, obtains titanium steel composite board.
Further, in order to make titanium steel composite board bond strength in course of reaction higher, the thickness of described Copper Foil is preferably 0.5mm, when adding thermal response, Copper Foil and titanium plate react and generate titanium copper compound, under the high temperature of about 900 DEG C, are melted into liquid, be extruded in the operation of rolling below, thus reach the new life at titanium, steel interface.
The high temperature preparation method of described above with copper is intermediate layer titanium steel composite board, also needed to carry out surface treatment step before a step, described surface-treated method is: carry out grinding and polishing process to the surface of steel plate and titanium plate, to remove surface contaminants and oxide layer, reduce interface to the impact of bond strength.
Wherein, interleaving agent described above is the interleaving agent that those skilled in the art commonly use, and usually adopts the oxide with high-temperature stability, as Al
2o
3, SiO
2, ceramic material, talcum powder etc.Main plaing a part isolates the titanium steel interface not needing compound, can be separated the object at titanium steel interface after reaching rolling.
Further, the vacuum treated vacuum described in a step must < 10
-2pa, to ensure combination interface not by the impact of the element such as oxygen, nitrogen in air.
Further, the high temperature preparation method of described above with copper is intermediate layer titanium steel composite board, as preferred scheme, the heating-up temperature described in b step is 1000 DEG C, heat time 5h; During step c rolling, first passage distortion 25%, through 10 passes, accumulative deflection is 95%, mill speed 0.2m/s, and finishing temperature is 640 DEG C.
The high temperature preparation method of described above with copper is intermediate layer titanium steel composite board, the assembly method of a step is specially:
1. prepare the identical steel plate of two block specifications, one block of titanium plate, one block of Copper Foil, four blocks of side plates, wherein, described side plate material is identical with steel plate;
2. side plate process: perforate at least one piece in four blocks of side plates, and weld a seamless carbon steel tube at tapping;
3. weld: apply interleaving agent at the adjacent surface of steel plate and titanium plate, symmetrical assembly is carried out according to the order of steel plate/titanium plate/Copper Foil/steel plate, side plate is arranged on titanium plate surrounding, and between two block plates, gap between steel plate with side plate and the gap between side plate with side plate are welded, becomes an assembly;
4. vacuumize: after having welded, be connected with vavuum pump by seamless carbon steel tube, after assembly inside is vacuumized, seamless carbon steel tube is sealed, obtain combining blank.
Wherein, seamless carbon steel tube wall thickness > 2mm described above.
Further, side plate process described above refers in four blocks of side plates on any one piece perforate.
Wherein, the dimensions of described steel plate and titanium plate does not have particular/special requirement, and those skilled in the art, in implementation process, according to the needs of production application, and can adjust the dimensions of titanium plate and steel plate, reach the object of production application.
The present invention take copper as the high temperature preparation method of intermediate layer titanium steel composite board, technique is simple, add intermediate plate-copper coin, at high temperature can react with titanium, the liquid phase generated is when rolling is extruded, take impurity and the oxide of titanium plate and surface of steel plate out of, just cleaning can be obtained, the newborn face of activation, the problem of light solution titanium steel composite board preparation process median surface oxidation, eliminate the impact of interface oxidation on bond strength, simultaneously, through substep rolling, compared with a traditional step rolling, greatly can improve the efficiency of rolling, finally realize the good combination at titanium steel interface.The titanium steel composite board template obtained after rolling is good, and surperficial no significant defect is formed, and combination interface is without the generation of titanium/iron compound, and in conjunction with respond well, bond strength >=260MPa, far above the bond strength of titanium steel composite board similar in national standard.
Detailed description of the invention
The invention provides a kind of take copper as the high temperature preparation method of intermediate layer titanium steel composite board, comprises the following steps:
A, assembly: carry out symmetrical assembly according to the order of steel plate/titanium plate/Copper Foil/steel plate, then by the seam of blank surrounding, blank inside carries out vacuumizing process, obtain combining blank; Wherein, apply interleaving agent at the adjacent surface of steel plate and titanium plate, the thickness of described Copper Foil is 0.3 ~ 0.8mm;
B, heating: blank will be combined at 980 ~ 1050 DEG C of heating 2 ~ 6h;
C, rolling: the combination blank after heating is carried out the rolling that at least twice are secondary, wherein, start rolling temperature 950 DEG C, finishing temperature is 600 ~ 700 DEG C; Front two pass deformation > 20%, rolling total deformation is >=80%, and mill speed is 0.1 ~ 1m/s;
D, finishing: air cooling, to room temperature, is separated the titanium steel interface of coating interleaving agent, obtains titanium steel composite board.
Further, in order to make titanium steel composite board bond strength in course of reaction higher, the thickness of described Copper Foil is preferably 0.5mm, when adding thermal response, Copper Foil and titanium plate react and generate titanium copper compound, under the high temperature of about 900 DEG C, are melted into liquid, be extruded in the operation of rolling below, thus reach the new life at titanium, steel interface.
The high temperature preparation method of described above with copper is intermediate layer titanium steel composite board, also needed to carry out surface treatment step before a step, described surface-treated method is: carry out grinding and polishing process to the surface of steel plate and titanium plate, to remove surface contaminants and oxide layer, reduce interface to the impact of bond strength.
Wherein, interleaving agent described above is the interleaving agent that those skilled in the art commonly use, and usually adopts the oxide with high-temperature stability, as Al
2o
3, SiO
2, ceramic material, talcum powder etc.Main plaing a part isolates the titanium steel interface not needing compound, can be separated the object at titanium steel interface after reaching rolling.
Further, the vacuum treated vacuum described in a step must < 10
-2pa, to ensure combination interface not by the impact of the element such as oxygen, nitrogen in air.
Further, the high temperature preparation method of described above with copper is intermediate layer titanium steel composite board, as preferred scheme, the heating-up temperature described in b step is 1000 DEG C, heat time 5h; During step c rolling, first passage distortion 25%, through 10 passes, accumulative deflection is 95%, mill speed 0.2m/s, and finishing temperature is 640 DEG C.
The high temperature preparation method of described above with copper is intermediate layer titanium steel composite board, the assembly method of a step is specially:
1. prepare the identical steel plate of two block specifications, one block of titanium plate, one block of Copper Foil, four blocks of side plates, wherein, described side plate material is identical with steel plate;
2. side plate process: perforate at least one piece in four blocks of side plates, and weld a seamless carbon steel tube at tapping;
3. weld: apply interleaving agent at the adjacent surface of steel plate and titanium plate, symmetrical assembly is carried out according to the order of steel plate/titanium plate/Copper Foil/steel plate, side plate is arranged on titanium plate surrounding, and between two block plates, gap between steel plate with side plate and the gap between side plate with side plate are welded, becomes an assembly;
4. vacuumize: after having welded, be connected with vavuum pump by seamless carbon steel tube, after assembly inside is vacuumized, seamless carbon steel tube is sealed, obtain combining blank.
Wherein, seamless carbon steel tube wall thickness > 2mm described above.
Further, side plate process described above refers in four blocks of side plates on any one piece perforate.
Wherein, the dimensions of described steel plate and titanium plate does not have particular/special requirement, and those skilled in the art, in implementation process, according to the needs of production application, and can adjust the dimensions of titanium plate and steel plate, reach the object of production application.
Below in conjunction with embodiment, the specific embodiment of the present invention is further described, does not therefore limit the present invention among described scope of embodiments.
Embodiment 1
1. preparing two block specifications is 200 × 160 × 18mm steel plate, one block of titanium plate being of a size of 160 × 120 × 20mm, one piece and titanium plate same size, the Copper Foil of thick 0.5mm and four blocks of side plates, and wherein, described side plate material is identical with steel plate; Perforate at least one piece in four blocks of side plates, and weld an endwall thick > 2mm seamless carbon steel tube at tapping; Interleaving agent is applied at the adjacent surface of steel plate and titanium plate, symmetrical assembly is carried out according to the order of steel plate/titanium plate/Copper Foil/steel plate, side plate is arranged on titanium plate surrounding, and between two block plates, gap between steel plate with side plate and the gap between side plate with side plate are welded, becomes an assembly; After having welded, be connected with vavuum pump by seamless carbon steel tube, after assembly inside is vacuumized, seamless carbon steel tube sealed, obtain combining blank.
2. ready combination blank is put into heating furnace and be heated to 1000 DEG C, insulation 5h;
3. taken out the combination blank of heating process, be rolled, front two passage distortion 25%, through 10 passes, accumulative deflection 95%, mill speed 0.2m/s, finishing temperature 640 DEG C.
4. air cooling is to room temperature, and sampling carries out bond strength test, interface bond strength 265MPa.
Embodiment 2
1. preparing two block specifications is 200 × 160 × 18mm steel plate, one block of titanium plate being of a size of 160 × 120 × 20mm, one piece and titanium plate same size, the Copper Foil of thick 0.3mm and four blocks of side plates, and wherein, described side plate material is identical with steel plate; Perforate at least one piece in four blocks of side plates, and weld an endwall thick > 2mm seamless carbon steel tube at tapping; Interleaving agent is applied at the adjacent surface of steel plate and titanium plate, symmetrical assembly is carried out according to the order of steel plate/titanium plate/Copper Foil/steel plate, side plate is arranged on titanium plate surrounding, and between two block plates, gap between steel plate with side plate and the gap between side plate with side plate are welded, becomes an assembly; After having welded, be connected with vavuum pump by seamless carbon steel tube, after assembly inside is vacuumized, seamless carbon steel tube sealed, obtain combining blank.
2. ready combination blank is put into heating furnace and be heated to 1050 DEG C, insulation 6h;
3. taken out the combination blank of heating process, be rolled, front two passage distortion 20%, through 10 passes, accumulative deflection 91%, mill speed 0.6m/s, finishing temperature 700 DEG C.
4. air cooling is to room temperature, and sampling carries out bond strength test, interface bond strength 267MPa.
Embodiment 3
1. preparing two block specifications is 200 × 160 × 18mm steel plate, one block of titanium plate being of a size of 160 × 120 × 20mm, one piece and titanium plate same size, the Copper Foil of thick 0.8mm and four blocks of side plates, and wherein, described side plate material is identical with steel plate; Perforate at least one piece in four blocks of side plates, and weld an endwall thick > 2mm seamless carbon steel tube at tapping; Interleaving agent is applied at the adjacent surface of steel plate and titanium plate, symmetrical assembly is carried out according to the order of steel plate/titanium plate/Copper Foil/steel plate, side plate is arranged on titanium plate surrounding, and between two block plates, gap between steel plate with side plate and the gap between side plate with side plate are welded, becomes an assembly; After having welded, be connected with vavuum pump by seamless carbon steel tube, after assembly inside is vacuumized, seamless carbon steel tube sealed, obtain combining blank.
2. ready combination blank is put into heating furnace and be heated to 980 DEG C, insulation 6h;
3. taken out the combination blank of heating process, be rolled, front two passage distortion 22%, through 10 passes, accumulative deflection 95%, mill speed 0.5m/s, finishing temperature 650 DEG C.
4. air cooling is to room temperature, and sampling carries out bond strength test, interface bond strength 260MPa.
Embodiment 4
1. preparing two block specifications is 200 × 160 × 18mm steel plate, one block of titanium plate being of a size of 160 × 120 × 20mm, one piece and titanium plate same size, the Copper Foil of thick 0.5mm and four blocks of side plates, and wherein, described side plate material is identical with steel plate; Perforate at least one piece in four blocks of side plates, and weld an endwall thick > 2mm seamless carbon steel tube at tapping; Interleaving agent is applied at the adjacent surface of steel plate and titanium plate, symmetrical assembly is carried out according to the order of steel plate/titanium plate/Copper Foil/steel plate, side plate is arranged on titanium plate surrounding, and between two block plates, gap between steel plate with side plate and the gap between side plate with side plate are welded, becomes an assembly; After having welded, be connected with vavuum pump by seamless carbon steel tube, after assembly inside is vacuumized, seamless carbon steel tube sealed, obtain combining blank.
2. ready combination blank is put into heating furnace and be heated to 980 DEG C, insulation 2h;
3. taken out the combination blank of heating process, be rolled, front two passage distortion 23%, through 12 passes, accumulative deflection 93%, mill speed 1m/s, finishing temperature 600 DEG C.
4. air cooling is to room temperature, and sampling carries out bond strength test, interface bond strength 266MPa.
Claims (8)
1. be the high temperature preparation method of intermediate layer titanium steel composite board with copper, it is characterized in that, comprise the following steps:
A, assembly: carry out symmetrical assembly according to the order of steel plate/titanium plate/Copper Foil/steel plate, then by the seam of blank surrounding, blank inside carries out vacuumizing process, obtain combining blank; Wherein, apply interleaving agent at the adjacent surface of steel plate and titanium plate, the thickness of described Copper Foil is 0.3 ~ 0.8mm;
B, heating: blank will be combined at 980 ~ 1050 DEG C of heating 2 ~ 6h;
C, rolling: the combination blank after heating is carried out the rolling that at least twice are secondary, wherein, start rolling temperature 950 DEG C, finishing temperature is 600 ~ 700 DEG C; Front two pass deformation > 20%, rolling total deformation is >=80%, and mill speed is 0.1 ~ 1m/s;
D, finishing: air cooling, to room temperature, is separated the titanium steel interface of coating interleaving agent, obtains titanium steel composite board.
2. according to claim 1 take copper as the high temperature preparation method of intermediate layer titanium steel composite board, it is characterized in that: the thickness of described Copper Foil is 0.5mm.
3. according to claim 1 take copper as the high temperature preparation method of intermediate layer titanium steel composite board, and it is characterized in that: also needed to carry out surface treatment step before a step, described surface-treated method is: carry out grinding and polishing process to the surface of steel plate and titanium plate.
4. according to claim 1 take copper as the high temperature preparation method of intermediate layer titanium steel composite board, it is characterized in that: the vacuum < 10 after the application of vacuum described in a step
-2pa.
5. take copper as the high temperature preparation method of intermediate layer titanium steel composite board according to any one of Claims 1 to 4, it is characterized in that: the heating-up temperature described in b step is 1000 DEG C, heat time 5h; During step c rolling, first passage distortion 25%, through 10 passes, accumulative deflection is 95%, mill speed 0.2m/s, and finishing temperature is 640 DEG C.
6. take copper as the high temperature preparation method of intermediate layer titanium steel composite board according to any one of Claims 1 to 4, it is characterized in that: the assembly method of a step is:
1. prepare the identical steel plate of two block specifications, one block of titanium plate, one block of Copper Foil, four blocks of side plates, wherein, described side plate material is identical with steel plate;
2. side plate process: perforate at least one piece in four blocks of side plates, and weld a seamless carbon steel tube at tapping;
3. weld: apply interleaving agent at the adjacent surface of steel plate and titanium plate, symmetrical assembly is carried out according to the order of steel plate/titanium plate/Copper Foil/steel plate, side plate is arranged on titanium plate surrounding, and between two block plates, gap between steel plate with side plate and the gap between side plate with side plate are welded, becomes an assembly;
4. vacuumize: after having welded, be connected with vavuum pump by seamless carbon steel tube, after assembly inside is vacuumized, seamless carbon steel tube is sealed, obtain combining blank.
7. according to claim 6 take copper as the high temperature preparation method of intermediate layer titanium steel composite board, it is characterized in that: described seamless carbon steel tube wall thickness > 2mm.
8. according to claim 6 take copper as the high temperature preparation method of intermediate layer titanium steel composite board, it is characterized in that: perforate on any a piece in four blocks of side plates.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107824629A (en) * | 2017-12-15 | 2018-03-23 | 郑州机械研究所有限公司 | A kind of vacuum hot-pressing process of silver-bearing copper composite band |
| CN111659989A (en) * | 2020-05-25 | 2020-09-15 | 中山大学 | Method for preparing titanium steel composite plate through cladding |
| CN113857405A (en) * | 2021-10-27 | 2021-12-31 | 成都先进金属材料产业技术研究院股份有限公司 | Titanium steel welding pressure processing composite method |
-
2015
- 2015-06-16 CN CN201510333072.2A patent/CN104874636A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107824629A (en) * | 2017-12-15 | 2018-03-23 | 郑州机械研究所有限公司 | A kind of vacuum hot-pressing process of silver-bearing copper composite band |
| CN111659989A (en) * | 2020-05-25 | 2020-09-15 | 中山大学 | Method for preparing titanium steel composite plate through cladding |
| CN113857405A (en) * | 2021-10-27 | 2021-12-31 | 成都先进金属材料产业技术研究院股份有限公司 | Titanium steel welding pressure processing composite method |
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Application publication date: 20150902 |