CN101817135A - Manufacturing method of TiAl-based alloy high-temperature double-layer oxygen-isolating sheath - Google Patents
Manufacturing method of TiAl-based alloy high-temperature double-layer oxygen-isolating sheath Download PDFInfo
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- CN101817135A CN101817135A CN 201010145809 CN201010145809A CN101817135A CN 101817135 A CN101817135 A CN 101817135A CN 201010145809 CN201010145809 CN 201010145809 CN 201010145809 A CN201010145809 A CN 201010145809A CN 101817135 A CN101817135 A CN 101817135A
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Abstract
The invention relates to a manufacturing method of a TiAl-based alloy high-temperature double-layer oxygen-isolating sheath, which comprises the following steps: 1, sheath blanking: based on the length, the width and the height of a coated TiAl-based alloy square billet, cutting titanium plates into six panels corresponding to the six surfaces of the square billet; 2, plastering: uniformly coating the six surfaces of the TiAl-based alloy square billet with adhesive, and plastering the panels to the corresponding surfaces of the TiAl-based alloy square billet; 3, welding: welding joints of two adjacent panels into a whole to form a sealed integral sheath; and 4, spraying: spraying the surfaces of the sheath with high-temperature oxidation-resistant coating. The invention can effectively slow the temperature drop of blank, remove the oxygen-containing atmosphere in the traditional sheath, and isolate the oxidative atmosphere in the outside air from the TiAl-based alloy so as to avoid the contact, thereby achieving the effect of double-layer oxygen isolation in the high-temperature deformation process. The invention has the advantages of simple process, convenient operation and easy popularization, and the prepared TiAl-based alloy plastering-welding double-layer oxygen-isolation sheath has perfect surface quality and uniform deformation texture after the high-temperature deformation, thereby being applicable to the high-temperature deformation industrial production of the TiAl-based alloy.
Description
Technical field
The invention discloses a kind of TiAl based alloy high-temperature double-layer oxygen-isolating sheath preparation method.
Background technology
TiAl base alloy has high elastic modelling quantity, low density, excellent specific strength, specific stiffness and has preferably characteristic such as creep-resistant property at 600～900 ℃, as the lightweight high-temperature structural material, is applicable to industrial circles such as Aero-Space, automobile.But TiAl base alloy at room temperature plasticity and process plastic are low, have brought very big difficulty to its processing and moulding, have restricted the extensive use in structural material of TiAl base alloy.Both at home and abroad the researcher successively studies the sheet material technology of preparing of TiAl base alloy, the shape that proposes to prevent alloy oxidation in the high temperature deformation process for and guarantee the high nearly research directions such as temperature state that wait, the research focus of the basic alloy of jacket distortion becoming TiAl.A lot of scholar's research go out different jacket designs, but its technological process complexity, poor operability, or only are confined to the processing of small sample, and application prospect is little.And the technology of preparing of weldbonding type double-layer oxygen-isolating sheath, report is not also arranged at present.
Summary of the invention
The object of the present invention is to provide simple, easy to operate, economic and practical, the anti-oxidation performance of a kind of process reliable, can effectively protect TiAl base alloy not oxidized a kind of TiAl based alloy high-temperature double-layer oxygen-isolating sheath preparation method when high temperature deformation.
A kind of TiAl based alloy high-temperature double-layer oxygen-isolating sheath preparation method comprises the steps:
The first step: jacket blanking
According to the length size that is coated the TiAl radicle alloy bloom, selecting thickness for use is that the titanium plate of 1～4mm cuts and 6 corresponding panels of TiAl radicle alloy bloom;
Second step: paste
Remove TiAl radicle alloy bloom surface impurity, evenly apply bonding agent on 6 faces of TiAl radicle alloy bloom, the panel that the first step is obtained is pasted on TiAl radicle alloy bloom surface accordingly;
The 3rd step: welding
The two adjacent surfaces plate interface is integrally welded, the whole jacket of a sealing of formation;
The 4th step: spraying
To jacket surface-coated high-temperature oxidation resistant coating.
Among the present invention, described TiAl radicle alloy bloom surface roughness is not higher than 3.2.
Among the present invention, described bonding agent is made of by weight percentage following component:
Mylar 60～80;
Oligomerisation styrene resin 5～20;
Xylene resin 4～20;
BHT 0.1～3;
Talcum powder 4～10;
TiO?0.1～10。
Among the present invention, argon arc welding machine is adopted in described welding.
Among the present invention, described high-temperature oxidation resistant coating serviceability temperature is 1200～1300 ℃.
The present invention is owing to adopt above-mentioned process, the weldbonding type double-layer oxygen-isolating sheath of making, deformation characteristic at TiAl base alloy, adopt advanced weldbonding type double-layer oxygen-isolating sheath technology, the effectively high-temperature oxydation behavior of TiAl base alloy in the prevention operation of rolling, and slow down the temperature drop of blank, produce the environment of nearly isothermal non-oxidizing atmosphere for the thermal deformation field headquarters of TiAl base alloy.High temperature rolling weldbonding type double-layer oxygen-isolating sheath by said method is produced can effectively protect TiAl base alloy with interior at 1300 ℃.
The invention has the advantages that:
1) technology is simple, and equipment requires simple and easy, workable, with low cost, applied widely, and the high-temp antioxidizing jacket that can be used for big or small sheet material is made;
2) the binding agent composition that is adopted can not corrode TiAl base alloy, and it is not destroyed and pollution;
3) binding agent that is adopted sticks at blank surface with sheath material and plays fixing effect, the operation that helps welding;
4) binding agent that is adopted air and high-temperature oxydation shape of having controlled in its jacket in low-temperature condition is got rid of jacket is that the particle that bonds under the condition of high temperature plays certain lubrication, helps the compatible deformation of jacket;
5) the jacket blank is after thermal deformation processing, because the bonding separation layer is arranged, sheath material and TiAl base alloy can break away from easily.
In sum, TiAl based alloy high-temperature distortion weldbonding type double-layer oxygen-isolating sheath of the present invention, reasonable in design, technology is simple, operation is simple and feasible, cost is low, the TiAl base alloy weldbonding type double-layer oxygen-isolating sheath of preparing is intact through high temperature deformation rear surface quality, Deformation structure is even, can effectively prevent the high-temperature oxydation behavior of TiAl base alloy in the deformation process, and slow down the temperature drop of blank, help the hot deformation behavior of TiAl base alloy, avoid it, and provide Technical Reference for the solar heat protection oxidation behavior of other difficult deformable metal or intermetallic compound because of big temperature drop and the caused cracking phenomena of oxidation.
Description of drawings
Accompanying drawing 1 is a jacket sample schematic diagram of the present invention.
Accompanying drawing 2 is a sample macrograph behind the basic alloy rolling of the TiAl of employing jacket of the present invention.
Accompanying drawing 3 is the microscopic structure of the TiAl base alloy rolling sample of employing jacket of the present invention.
Among the figure: 1-alloy square billet, 2-jacket, 3-weld seam, 4--high-temperature oxidation resistant coating.
The specific embodiment
Embodiment 1: adopt powder metallurgy process to make (at%) alloy blank of Ti-47Al-2Nb-2Cr-(W, C), method through cutting is made square billet, and adopt technological process shown in Figure 1 to carry out the double-layer oxygen-isolating sheath coating, wherein sheath material is the thick titanium plate of 3mm, and the composition of binding agent is mylar 80, oligomerisation styrene resin 5, xylene resin 6, BHT 3, talcum powder 5, TiO 1.Through 1240 ℃ of preheatings, be not higher than 0.7s
-1Sample after strain rate 6 passages are rolling such as Fig. 2 make total deformation and are 68%, the TiAl based alloy plate of no cracking phenomena.
Embodiment 2: adopt powder metallurgy process to make (at%) alloy blank of Ti-48Al-2Nb-2Cr-(W, C), method through cutting is made square billet, and adopt technological process shown in Figure 1 to carry out the double-layer oxygen-isolating sheath coating, wherein sheath material is the thick titanium plate of 1.2mm, and the composition of binding agent is mylar 60, oligomerisation styrene resin 20, xylene resin 4, BHT 0.1, talcum powder 5.9, TiO 10.Through 1240 ℃ of preheatings, be not higher than 0.65s
-1Sample microscopic structure after strain rate 6 passages are rolling makes total deformation and is 65%, the TiAl based alloy plate of no cracking phenomena as shown in Figure 3.
Embodiment 3: adopt powder metallurgy process to make (at%) alloy blank of Ti-46Al-2Nb-2Cr-(W, C), method through cutting is made square billet, and adopt technological process shown in Figure 1 to carry out the double-layer oxygen-isolating sheath coating, wherein sheath material is the thick titanium plate of 2mm, and the composition of binding agent is mylar 60, oligomerisation styrene resin 8, xylene resin 20, BHT 3, talcum powder 4, TiO 5.Through 1240 ℃ of preheatings, be not higher than 0.3s
-1After strain rate 8 passages are rolling, make total deformation and be 80%, the TiAl based alloy plate of no cracking phenomena.
Claims (5)
1. a TiAl based alloy high-temperature double-layer oxygen-isolating sheath preparation method comprises the steps:
The first step: jacket blanking
According to the length size that is coated the TiAl radicle alloy bloom, selecting thickness for use is that the titanium plate of 1～4mm cuts and 6 corresponding panels of TiAl radicle alloy bloom;
Second step: paste
Remove TiAl radicle alloy bloom surface impurity, evenly apply bonding agent on six faces of TiAl radicle alloy bloom, the panel that the first step is obtained is pasted on TiAl radicle alloy bloom surface accordingly;
The 3rd step: welding
The two adjacent surfaces plate interface is integrally welded, the whole jacket of a sealing of formation;
The 4th step: spraying
To jacket surface-coated high-temperature oxidation resistant coating.
2. a kind of TiAl based alloy high-temperature double-layer oxygen-isolating sheath preparation method according to claim 1 is characterized in that: described TiAl radicle alloy bloom surface roughness is not higher than 3.2.
3. a kind of TiAl based alloy high-temperature double-layer oxygen-isolating sheath preparation method according to claim 2 is characterized in that: described bonding agent is made of by weight percentage following component:
Mylar 60～80;
Oligomerisation styrene resin 5～20;
Xylene resin 4～20;
BHT 0.1～3;
Talcum powder 4～10;
TiO?0.1～10。
4. a kind of TiAl based alloy high-temperature double-layer oxygen-isolating sheath preparation method according to claim 3 is characterized in that: argon arc welding machine is adopted in described welding.
5. a kind of TiAl based alloy high-temperature double-layer oxygen-isolating sheath preparation method according to claim 4, it is characterized in that: described high-temperature oxidation resistant coating serviceability temperature is 1200～1300 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101458095A CN101817135B (en) | 2010-04-13 | 2010-04-13 | Manufacturing method of TiAl-based alloy high-temperature double-layer oxygen-isolating sheath |
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| CN2010101458095A CN101817135B (en) | 2010-04-13 | 2010-04-13 | Manufacturing method of TiAl-based alloy high-temperature double-layer oxygen-isolating sheath |
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| CN101817135A true CN101817135A (en) | 2010-09-01 |
| CN101817135B CN101817135B (en) | 2012-06-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106189982A (en) * | 2016-08-29 | 2016-12-07 | 强新正品（苏州）环保材料科技有限公司 | A kind of polyester type hot melt adhesive |
| CN106521196A (en) * | 2016-11-04 | 2017-03-22 | 西北有色金属研究院 | Preparation method of gamma-TiAl-based alloy bar |
| CN108115365A (en) * | 2017-12-20 | 2018-06-05 | 西安西工大超晶科技发展有限责任公司 | A kind of jacket cogging forging molding process of titanium-aluminium alloy ingot casting |
| CN112552013A (en) * | 2020-12-23 | 2021-03-26 | 山东鲁阳节能材料股份有限公司 | Adhesive for high-temperature self-adhesive refractory blanket, preparation method of adhesive and high-temperature self-adhesive refractory blanket |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0543353A1 (en) * | 1991-11-18 | 1993-05-26 | Sumitomo Light Metal Industries, Ltd. | Method for producing an inlet or exhaust valve for internal combustion engine |
| JPH08336929A (en) * | 1995-06-09 | 1996-12-24 | Sumitomo Metal Ind Ltd | Titanium/aluminum clad plate for building material |
| US6420051B1 (en) * | 1997-10-25 | 2002-07-16 | Gkss-Forschungszentrum Gaesthacht Gmbh | Device for encapsulating blanks of high temperature metallic alloys |
| CN1132953C (en) * | 2001-11-08 | 2003-12-31 | 北京科技大学 | Process for preparing high niobium Ti Al alloy large size cake material |
| CN1319681C (en) * | 2005-08-05 | 2007-06-06 | 哈尔滨工业大学 | Casting method of large size hole defect less TiA1 base alloy ingot |
-
2010
- 2010-04-13 CN CN2010101458095A patent/CN101817135B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0543353A1 (en) * | 1991-11-18 | 1993-05-26 | Sumitomo Light Metal Industries, Ltd. | Method for producing an inlet or exhaust valve for internal combustion engine |
| JPH08336929A (en) * | 1995-06-09 | 1996-12-24 | Sumitomo Metal Ind Ltd | Titanium/aluminum clad plate for building material |
| US6420051B1 (en) * | 1997-10-25 | 2002-07-16 | Gkss-Forschungszentrum Gaesthacht Gmbh | Device for encapsulating blanks of high temperature metallic alloys |
| CN1132953C (en) * | 2001-11-08 | 2003-12-31 | 北京科技大学 | Process for preparing high niobium Ti Al alloy large size cake material |
| CN1319681C (en) * | 2005-08-05 | 2007-06-06 | 哈尔滨工业大学 | Casting method of large size hole defect less TiA1 base alloy ingot |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106189982A (en) * | 2016-08-29 | 2016-12-07 | 强新正品（苏州）环保材料科技有限公司 | A kind of polyester type hot melt adhesive |
| CN106521196A (en) * | 2016-11-04 | 2017-03-22 | 西北有色金属研究院 | Preparation method of gamma-TiAl-based alloy bar |
| CN108115365A (en) * | 2017-12-20 | 2018-06-05 | 西安西工大超晶科技发展有限责任公司 | A kind of jacket cogging forging molding process of titanium-aluminium alloy ingot casting |
| CN112552013A (en) * | 2020-12-23 | 2021-03-26 | 山东鲁阳节能材料股份有限公司 | Adhesive for high-temperature self-adhesive refractory blanket, preparation method of adhesive and high-temperature self-adhesive refractory blanket |
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| CN101817135B (en) | 2012-06-27 |
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