CN114631724A - Titanium alloy teapot and near-net forming method - Google Patents
Titanium alloy teapot and near-net forming method Download PDFInfo
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- CN114631724A CN114631724A CN202210332463.2A CN202210332463A CN114631724A CN 114631724 A CN114631724 A CN 114631724A CN 202210332463 A CN202210332463 A CN 202210332463A CN 114631724 A CN114631724 A CN 114631724A
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- titanium alloy
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000005266 casting Methods 0.000 claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims abstract description 26
- 239000002002 slurry Substances 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000003723 Smelting Methods 0.000 claims abstract description 5
- 239000000956 alloy Substances 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 238000002844 melting Methods 0.000 claims abstract description 3
- 230000008018 melting Effects 0.000 claims abstract description 3
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 claims description 26
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 13
- 229910052863 mullite Inorganic materials 0.000 claims description 13
- 239000004576 sand Substances 0.000 claims description 12
- 241001122767 Theaceae Species 0.000 claims description 7
- 210000003625 skull Anatomy 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 6
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000002344 surface layer Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 3
- 238000013329 compounding Methods 0.000 claims description 2
- 238000009966 trimming Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 abstract description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 229910052719 titanium Inorganic materials 0.000 description 7
- 239000010936 titanium Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000003115 biocidal effect Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 5
- 239000010439 graphite Substances 0.000 description 5
- DUFCMRCMPHIFTR-UHFFFAOYSA-N 5-(dimethylsulfamoyl)-2-methylfuran-3-carboxylic acid Chemical compound CN(C)S(=O)(=O)C1=CC(C(O)=O)=C(C)O1 DUFCMRCMPHIFTR-UHFFFAOYSA-N 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 239000010431 corundum Substances 0.000 description 3
- 238000005495 investment casting Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 206010020751 Hypersensitivity Diseases 0.000 description 2
- 229910000883 Ti6Al4V Inorganic materials 0.000 description 2
- 208000026935 allergic disease Diseases 0.000 description 2
- 230000007815 allergy Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008821 health effect Effects 0.000 description 2
- 231100000956 nontoxicity Toxicity 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006557 surface reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47G—HOUSEHOLD OR TABLE EQUIPMENT
- A47G19/00—Table service
- A47G19/12—Vessels or pots for table use
- A47G19/14—Coffee or tea pots
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Table Devices Or Equipment (AREA)
Abstract
The invention belongs to the technical field of titanium alloy vessel manufacturing, and particularly relates to a titanium alloy teapot and a near-net forming method. The kettle body and the kettle cover of the titanium alloy teapot provided by the invention are both made of titanium alloy materials through near net shape forming. The near-net forming method of the titanium alloy teapot provided by the invention comprises the following steps: manufacturing an aluminum mould, and manufacturing the aluminum mould according to the shape and the structure of the titanium alloy teapot to be manufactured; manufacturing a wax mould, and pressing a wax material on a press to form a wax pattern; manufacturing a shell, coating shell slurry on the surface of a wax pattern, and hardening to obtain the shell; smelting and casting, namely heating and melting the cast titanium alloy, casting the molten titanium alloy into a shell, cooling and forming to obtain a titanium alloy teapot blank, and finishing to obtain the titanium alloy teapot. The teapot manufactured by the invention has almost no pollution layer (less than or equal to 0.05mm) on the surface, complete surface and high finish; the manufacturing method of the invention can greatly reduce the grinding amount and the manufacturing cost.
Description
Technical Field
The invention belongs to the technical field of titanium alloy vessel manufacturing, and particularly relates to a titanium alloy teapot and a near-net forming method.
Background
The titanium and the titanium alloy not only have light weight (the density is 4.5 to 4.8 g/cm)3) High specific strength, small heat conductivity coefficient, high temperature resistance, corrosion resistance, antibiosis and good biocompatibility. Therefore, the composite material has wide application in aerospace, chemical engineering, marine ships, biological medical treatment and articles for daily use. With the continuous rise of the output of titanium sponge in China, the output already accounts for more than half of the global output. With the continuous improvement of the living standard of people, the pursuit of people for good things is continuously improved. Because the titanium and the titanium alloy have the characteristics of good biocompatibility, antibiosis, slow heat conduction, corrosion resistance, high strength, attractive appearance and the like, people put forward demands on titanium alloy teapot products. The teapot product prepared from the titanium and the titanium alloy is corrosion-resistant, attractive and elegant, has the health properties of antibiosis, no toxicity, compatibility with human bodies, no allergy and the like, and has the characteristics of slow heat conduction, no scalding and the like, so that the high-end market demand can be met. Because titanium and titanium alloy have high activity, the production cost is always high, and the application in the field is greatly limited.
At present, graphite mold casting and zirconium acetate investment casting are generally adopted to prepare the titanium alloy teapot blank. And (3) graphite mold casting, namely adopting high-strength graphite as a casting mold, and casting and molding the titanium alloy melt to prepare a teapot blank. However, the teapot blank prepared by the method has thick surface carbon reaction layer, about 0.5mm of pollution layer, large surface grinding amount, high cost and poor apparent quality. The investment casting of the zirconium acetate is to adopt the zirconium acetate as the adhesive to prepare the investment casting, and the titanium alloy solution is cast and molded. However, the surface of the teapot blank prepared by the method is thick and uneven (about 0.2-0.5 mm), and some areas have almost no reaction layer and some areas have serious reaction; difficult uniform grinding, large impurity inclusion amount and unsatisfactory apparent mass and profile tolerance.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a titanium alloy teapot and a near-net forming method.
The titanium alloy teapot provided by the invention comprises a teapot body with a tea water containing cavity and a teapot cover capable of covering an opening at the upper part of the teapot body, wherein the teapot body comprises a teapot nozzle communicated with the tea water containing cavity and a teapot handle for a user to hold; the kettle body and the kettle cover are both made of titanium alloy materials through near net shaping.
Because the titanium and the titanium alloy have the characteristics of good biocompatibility, antibiosis, slow heat conduction, corrosion resistance, high strength, attractive appearance and the like, the teapot product prepared from the titanium and the titanium alloy is not only corrosion resistant and attractive and elegant, but also has the health properties of antibiosis, no toxicity, compatibility with human bodies, no allergy and the like, and the characteristics of slow heat conduction, no scalding and the like, so that the high-end market demand can be met. The manufacturing by the near net shape forming method can overcome the defects of the existing forming method, reduce the subsequent processing amount and improve the quality of the titanium alloy teapot.
The invention provides a near-net forming method of a titanium alloy teapot, which comprises the following steps:
step 1: manufacturing an aluminum die; manufacturing an aluminum mould according to the shape and the structure of the titanium alloy teapot to be manufactured;
step 2: manufacturing a wax mould; pressing the wax material on a press to form a wax pattern;
and step 3: manufacturing a shell; coating shell slurry on the surface of the wax mould, and hardening to obtain a shell;
and 4, step 4: smelting and casting; heating and melting the cast titanium alloy, pouring the molten titanium alloy into a shell, cooling and forming to obtain a titanium alloy teapot blank, and trimming to obtain the titanium alloy teapot.
Further, in step 1 of the near net shape forming method, the surface of the aluminum mold is finely carved with decorative textures, so that the decorative textures are remained in the finally prepared titanium alloy teapot blank.
Further, in step 2 of the near net shape forming method, the wax pattern is pressed on a large press by using medium temperature wax material, so as to ensure the surface quality of the wax pattern.
Further, in step 2 of the near net shape forming method, the surface layer of the shell is an yttrium oxide layer formed by drying yttrium oxide slurry, and the back layer of the shell is a plurality of mullite sand layers.
Furthermore, the back layer of the shell of the near net forming method is 5 mullite sand layers, and the mullite sand layers are obtained by compounding mullite powder slurry and mullite sand and then drying and curing.
Further, in step 4 of the near-net-shape forming method, a titanium alloy is cast by adopting a vacuum consumable electrode skull furnace casting process, a skull is formed on the inner wall of the container by the titanium alloy casting liquid, and the skull is kept in the container as the lining of the container so as to ensure the purity of the titanium alloy casting liquid.
Further, in step 4 of the near net shape forming method, a cast titanium alloy with the model of Ti-6Al-4V is adopted for casting.
Advantageous effects
Compared with the prior art, the titanium alloy teapot and the near-net forming method provided by the invention have the following advantages.
(1) The surface quality and precision of the titanium alloy teapot are effectively improved, and particularly, fine and clear carving textures can be formed on the surface, so that complex reprocessing in the later period is avoided.
(2) Specifically, the titanium alloy casting and the formwork are subjected to chemical reaction in the solidification process to form a reaction layer on the surface, so that raw materials are consumed more, the workload of subsequent processing is increased, the thickness of the reaction layer can be reduced remarkably by the method, the product quality is improved, and raw materials are saved.
(3) The realization of acid cleaning is avoided, particularly, at present, most titanium alloy castings, such as graphite type and the like, need to adopt HF + HNO due to thicker surface reaction layer3The process is called pickling, because the reaction layer is thin, the sand blasting can be carried out for removing, the post-treatment process is reduced, and the pollution to the environment is reduced.
(4) The method also has the advantages of convenient operation, low labor intensity, high yield, low manufacturing cost and the like.
Detailed Description
The invention is further illustrated by the following specific examples, which are illustrative and intended to illustrate the problem and explain the invention, but not limiting.
A titanium alloy teapot is basically consistent with teapots made of common glass, ceramics, purple sand and the like in structure and comprises a teapot body with a tea containing cavity and a teapot cover capable of covering an opening at the upper part of the teapot body, wherein a teapot spout communicated with the tea containing cavity and a teapot handle held by a user are arranged on the teapot body. In terms of materials, the teapot body and the teapot cover of the teapot are both made of titanium alloy materials.
The titanium alloy teapot is manufactured by a near-net forming method which comprises the following specific steps.
Step 1, manufacturing an aluminum die: and manufacturing a fine aluminum mold according to requirements, and finely carving the surface texture in place.
Step 2, manufacturing a wax mould: the wax pattern is pressed on a large-scale press by using medium-temperature wax materials so as to ensure the surface quality of the wax pattern.
Step 3, manufacturing a shell: in order to finely carve and cast the surface of the teapot in place, yttrium oxide slurry is required to be coated on the surface of the wax mould. The process uses an oxide ceramic shell system. The surface and the back layer of the shell are both made of oxide as molding materials, so that the shell has high strength and smaller heat conductivity compared with other shells such as a graphite shell and a refractory metal shell, and is suitable for casting thin-wall castings with complex shapes. Specifically, the shell surface layer is an yttrium oxide surface layer, the shell back layer is 1 layer of corundum (corundum slurry + corundum sand) and 5 layers of mullite sand (mullite powder slurry + mullite sand), and in addition, key process parameters such as temperature, temperature and drying time are strictly controlled, the temperature is 22 +/-2 ℃, the humidity is 35-45%, and the drying time is more than 8 hours. The shell is easy to manufacture, the continuity and consistency of the process are improved, the production efficiency of products is improved, the waste of slurry is greatly reduced, and the product percent of pass can be ensured to be more than 70%.
Step 4, smelting and casting: as for titanium alloy raw materials, most titanium alloys have good casting performance and can be used for casting, and the preferred casting titanium alloy is Ti-6Al-4V alloy which has good casting performance, stable structure and performance and good strength and fracture toughness below 350 ℃. The casting process needs to adopt a vacuum consumable electrode skull furnace casting process, the furnace is developed on the basis of a vacuum consumable electrode electric arc furnace, and is a furnace type for casting a special-shaped part integrating smelting and centrifugal casting. After casting, a layer of condensed shell remained in the crucible can be used as the crucible lining for continuous use. The titanium liquid forms a blank after casting and cooling, and the blank surface almost has no pollution layer (less than or equal to 0.05mm), so that the structure is complete, the finish degree is high, the profile degree meets the requirement, the titanium alloy teapot which can be used can be obtained by slightly polishing and removing burrs and simply cleaning, and the manufacturing cost is greatly reduced.
The above embodiments are exemplary only, and are intended to illustrate the technical concept and features of the present invention so that those skilled in the art can understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (8)
1. A titanium alloy teapot is characterized in that: the tea pot comprises a pot body with a tea water containing cavity and a pot cover capable of covering an opening at the upper part of the pot body, wherein the pot body comprises a pot nozzle communicated with the tea water containing cavity and a pot handle held by a user; the kettle body and the kettle cover are both made of titanium alloy materials through near-net forming.
2. A near net shape forming method of a titanium alloy teapot is characterized in that: the method comprises the following steps:
step 1: manufacturing an aluminum die; manufacturing an aluminum mould according to the shape and the structure of the titanium alloy teapot to be manufactured;
and 2, step: manufacturing a wax mould; pressing the wax material on a press to form a wax pattern;
and step 3: manufacturing a shell; coating shell slurry on the surface of the wax mould, and hardening to obtain a shell;
and 4, step 4: smelting and casting; heating and melting the cast titanium alloy, pouring the molten titanium alloy into a shell, cooling and forming to obtain a titanium alloy teapot blank, and trimming to obtain the titanium alloy teapot.
3. The near net shape method of a titanium alloy teapot according to claim 2, wherein: in the step 1, decorative textures are finely carved on the surface of the aluminum die, so that the decorative textures are remained in the finally prepared titanium alloy teapot blank.
4. The near net shape method of a titanium alloy teapot according to claim 2, wherein: in the step 2, the wax pattern is pressed on a large-scale press by using a medium-temperature wax material so as to ensure the surface quality of the wax pattern.
5. The near net shape method of a titanium alloy teapot according to claim 2, wherein: in the step 2, the surface layer of the shell is an yttrium oxide layer formed by drying yttrium oxide slurry, and the back layer of the shell is a plurality of mullite sand layers.
6. The near net shape forming method of a titanium alloy teapot according to claim 5, characterized in that: the back layer of the shell is a 5-layer mullite sand layer, and the mullite sand layer is obtained by compounding mullite powder slurry and mullite sand and then drying and curing.
7. The near net shape forming method of a titanium alloy teapot according to claim 2, characterized in that: and 4, casting the titanium alloy by adopting a vacuum consumable electrode skull furnace casting process, wherein a skull is formed on the inner wall of the container by the titanium alloy casting liquid, and the skull is kept in the container as the lining of the container so as to ensure the purity of the titanium alloy casting liquid.
8. The near net shape method of a titanium alloy teapot according to claim 7, wherein: and 4, casting by adopting a casting titanium alloy with the model of Ti-6 Al-4V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210332463.2A CN114631724A (en) | 2022-03-31 | 2022-03-31 | Titanium alloy teapot and near-net forming method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210332463.2A CN114631724A (en) | 2022-03-31 | 2022-03-31 | Titanium alloy teapot and near-net forming method |
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| CN114631724A true CN114631724A (en) | 2022-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202210332463.2A Pending CN114631724A (en) | 2022-03-31 | 2022-03-31 | Titanium alloy teapot and near-net forming method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499499A (en) * | 2015-12-08 | 2016-04-20 | 中国航空工业集团公司北京航空材料研究院 | Precise forming method for titanium-aluminum intermetallic compounds |
| CN105838952A (en) * | 2016-05-06 | 2016-08-10 | 太原市精诚镁合金科技有限公司 | Magnesium alloy kettle and manufacturing method thereof |
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| CN107790631A (en) * | 2017-09-25 | 2018-03-13 | 福鼎市广化红茶具商行 | A kind of titanium tea set production method |
| CN109277529A (en) * | 2017-07-21 | 2019-01-29 | 中国科学院金属研究所 | A kind of preparation method of model casting γ-TiAl-base alloy blade formwork |
| WO2021106007A1 (en) * | 2019-11-28 | 2021-06-03 | Yashkumar Singh | Process for manufacturing of copper-titanium alloys by lost wax process (investment casting) |
| CN113245509A (en) * | 2021-03-26 | 2021-08-13 | 江苏华钛瑞翔科技有限公司 | Near-net forming method for titanium alloy faucet blank |
-
2022
- 2022-03-31 CN CN202210332463.2A patent/CN114631724A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499499A (en) * | 2015-12-08 | 2016-04-20 | 中国航空工业集团公司北京航空材料研究院 | Precise forming method for titanium-aluminum intermetallic compounds |
| CN105838952A (en) * | 2016-05-06 | 2016-08-10 | 太原市精诚镁合金科技有限公司 | Magnesium alloy kettle and manufacturing method thereof |
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| CN106984795A (en) * | 2017-03-23 | 2017-07-28 | 西北工业大学 | A kind of Ti55 casts the temperature control clotting method of high-temperature titanium alloy |
| CN109277529A (en) * | 2017-07-21 | 2019-01-29 | 中国科学院金属研究所 | A kind of preparation method of model casting γ-TiAl-base alloy blade formwork |
| CN107790631A (en) * | 2017-09-25 | 2018-03-13 | 福鼎市广化红茶具商行 | A kind of titanium tea set production method |
| WO2021106007A1 (en) * | 2019-11-28 | 2021-06-03 | Yashkumar Singh | Process for manufacturing of copper-titanium alloys by lost wax process (investment casting) |
| CN113245509A (en) * | 2021-03-26 | 2021-08-13 | 江苏华钛瑞翔科技有限公司 | Near-net forming method for titanium alloy faucet blank |
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