CN114425648A - Preparation method of high-purity titanium sponge steaming furnace tank - Google Patents
Preparation method of high-purity titanium sponge steaming furnace tank Download PDFInfo
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- CN114425648A CN114425648A CN202111432762.5A CN202111432762A CN114425648A CN 114425648 A CN114425648 A CN 114425648A CN 202111432762 A CN202111432762 A CN 202111432762A CN 114425648 A CN114425648 A CN 114425648A
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000010025 steaming Methods 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000003466 welding Methods 0.000 claims abstract description 55
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 50
- 239000010959 steel Substances 0.000 claims abstract description 50
- 239000002360 explosive Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000002131 composite material Substances 0.000 claims abstract description 20
- 238000002955 isolation Methods 0.000 claims abstract description 19
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 12
- 210000001503 joint Anatomy 0.000 claims abstract description 9
- 238000005498 polishing Methods 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 229910052786 argon Inorganic materials 0.000 claims abstract description 6
- 238000005192 partition Methods 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims abstract description 6
- 238000005488 sandblasting Methods 0.000 claims abstract description 6
- 230000007797 corrosion Effects 0.000 claims abstract description 4
- 238000005260 corrosion Methods 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 31
- 229910052742 iron Inorganic materials 0.000 claims description 16
- 239000003085 diluting agent Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000002932 luster Substances 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 4
- 238000005474 detonation Methods 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- 238000003491 array Methods 0.000 claims description 2
- 239000010936 titanium Substances 0.000 abstract description 10
- 229910052719 titanium Inorganic materials 0.000 abstract description 8
- 229910052804 chromium Inorganic materials 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 229910052759 nickel Inorganic materials 0.000 description 8
- 229910001220 stainless steel Inorganic materials 0.000 description 8
- 239000010935 stainless steel Substances 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 5
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- 238000005292 vacuum distillation Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/06—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy
- B23K20/08—Explosive welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a preparation method of a high-purity sponge titanium steaming furnace tank, which comprises the following steps: polishing the surface of the heat-resistant steel plate to remove dirt, wherein the polishing surface faces upwards and is horizontally placed on the foundation; placing a plurality of supporting components above the polished surface of the heat-resistant steel plate, and placing the isolation plate on the supporting components; laying explosives on the partition board, and detonating to obtain a layered composite board; carrying out sand blasting treatment on the layered composite board to remove surface corrosion; rolling the laminated composite plate, processing a groove at the butt joint, and pressing an end enclosure; butt welding is carried out by adopting a consumable electrode argon arc welding or manual welding rod welding method; firstly welding a heat-resistant steel plate, and then welding an inner wall isolation plate; the tank body is obtained after welding is completed, and titanizing treatment is carried out on the inner surface of the tank body to obtain a finished product.
Description
Technical Field
The invention relates to the technical field of reaction furnace processing, in particular to a preparation method of a high-purity titanium sponge steaming furnace tank body.
Background
The steaming process is the most important and most critical link in the whole titanium sponge production, and is equivalent to the heart of the whole production line, the process is to react titanium tetrachloride with metal magnesium in the argon atmosphere at the temperature of 800-850 ℃ to obtain titanium sponge and magnesium chloride, and the magnesium chloride and the surplus magnesium in the titanium sponge are removed by vacuum distillation to obtain pure titanium. Because the equipment of the still steaming furnace is required to be high temperature resistant and low vacuum, and when the equipment is heated in the electric furnace, the whole weight of the reduction tank is only suspended and supported by the flange of the electric furnace, the reaction zone at the upper part of the tank body becomes the weakest part, the tensile stress is the largest, and the average temperature is the highest. Meanwhile, the tank body inevitably generates thermal deformation and continuous stretching, so that the service life of the tank body is short, and the problems of difficult control of temperature and pressure, low product quality and the like are caused.
At present, the tank body used by domestic titanium enterprises is mainly made of common container steel Q245R or single stainless steel (1 Cr18Ni9 Ti) as a reactor material, and the yield strength of the common container steel at 500 ℃ is less than 120 Mpa. At the temperature of 800-. When stainless steel (1 Cr18Ni9 Ti) is used as the material for the reactor, the 1Cr18Ni9Ti contains a large amount of elements such as Cr and Ni, and thus a large amount of elements such as Cr and Ni are mixed into the titanium sponge at a high temperature in the inner wall of the reactor, which is in direct contact with the raw material and the product, and the quality of the titanium sponge is affected.
Disclosure of Invention
In order to solve the existing problems, the invention provides a preparation method of a high-purity titanium sponge steaming furnace tank body, the tank body prepared by the method can greatly prolong the service life, greatly reduce the content of Cr, Ni and other impurity elements in the titanium sponge, and improve the smelting quality of the titanium sponge.
The technical scheme adopted by the invention is as follows: a preparation method of a high-purity sponge titanium steaming furnace tank body comprises the following steps:
polishing the surface of a heat-resistant steel plate to remove dirt, exposing metallic luster, and horizontally placing the polished surface on a foundation;
placing a plurality of supporting assemblies above the polished surface of the heat-resistant steel plate, and placing the isolation plate on the supporting assemblies;
thirdly, laying explosives on the partition board, and detonating to obtain a layered composite board;
fourthly, carrying out sand blasting treatment on one surface of the laminated composite board provided with the isolation board to remove surface corrosion;
rolling the surface, provided with the partition plate, of the layered composite plate as the inner surface of the container, machining a groove at a butt joint part, and pressing an end enclosure;
step six, carrying out butt welding by adopting a consumable electrode argon arc welding or manual welding rod welding method; firstly welding a heat-resistant steel plate, and then welding an inner wall isolation plate;
and seventhly, obtaining the tank body after welding is finished, and carrying out titanizing treatment on the inner surface of the tank body to obtain a finished product.
Further, the thickness of the heat-resistant steel plate in the first step is 28-55 mm.
Further, the thickness of the isolating plate in the second step is 3-5 mm.
Further, the isolation plate in the second step is any one of a steel plate of the container and pure iron.
Furthermore, the supporting assembly in the second step comprises a plurality of supporting plates, and the supporting plates are arranged above the heat-resistant steel plate in a rectangular array.
Furthermore, the height of the supporting plate in the vertical direction is 8-12 mm, and the distance between the rectangular arrays is 200-500 mm.
Furthermore, the support plate is a V-shaped plate, and the V-shaped plate is formed by folding an annealed pure copper plate with the thickness of 0.1-0.3 mm.
Further, the explosive in the third step is a mixture of an emulsified ammonium nitrate explosive and a diluent, wherein the mass of the diluent is 33-70% of that of the total mixture; the diluent is any one of sand and salt; the detonation velocity of the explosive is 1800-2000m/s, the explosive laying thickness of the explosive is 35-50 mm, a detonator is inserted into the explosive laying, and the layered composite board is obtained after the detonator is detonated.
Furthermore, the angle of the groove machined at the butt joint in the fifth step is 60-70 degrees, the welding gap is 1-3 mm, and the truncated edge is 3-5 mm.
Further, the titanizing treatment method in the seventh step comprises the following steps: after the titanium powder is coated on the surface of the isolation plate, the heating temperature is 900-1050 ℃, and the heat preservation time is 3-8 hours.
The invention has the following beneficial effects that:
1) the service life of the steaming furnace can be greatly prolonged by adopting the isolating plate/heat-resistant steel plate laminated composite plate;
2) the production cost of single sponge titanium can be reduced;
3) this patent adopts pure iron DT4E or container steel sheet as the inner wall of the jar body, can thoroughly completely cut off the pollution of elements such as Cr, Ni, promotes the titanium sponge quality.
Drawings
FIG. 1 is a schematic diagram of the structure of the inventive manufacturing process;
FIG. 2 is a schematic structural view of groove processing at the butt joint of the composite plate in the can body rolling process of the invention;
the figure shows the mark, 1, detonator, 2, explosive, 3, isolation plate, 4, support plate, 5, heat-resistant steel plate, 6 and foundation.
Detailed Description
The present invention will be described in further detail with reference to the drawings and specific examples, but the present invention is not limited thereto.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "lateral", "longitudinal", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
A preparation method of a high-purity sponge titanium steaming furnace tank body comprises the following steps:
polishing the surface of a heat-resistant steel plate 5 to remove dirt, exposing metallic luster, and horizontally placing the polished surface on a foundation 6; the thickness of the heat-resistant steel plate 5 is 28-55 mm;
secondly, placing a plurality of supporting components above the polished surface of the heat-resistant steel plate 5, and placing the isolation plate 3 on the supporting components; the thickness of the isolation plate 3 is 3-5 mm; the division board 3 is any one in container steel sheet, the pure iron, and the supporting component includes a plurality of backup pad 4, and a plurality of backup pad 4 uses the rectangle array to arrange in the top of heat-resisting steel sheet 5, and backup pad 4 is 8~12mm in the ascending height of vertical side, and the interval of rectangle array is 200~500mm, and backup pad 4 is the V-arrangement board, and this V-arrangement board is folded by the annealing state pure copper board that thickness is 0.1~0.3 mm.
Thirdly, laying the explosive 2 on the isolation plate 3, and detonating to obtain a layered composite plate; the explosive 2 is a mixture of an emulsified ammonium nitrate explosive and a diluent, wherein the diluent accounts for 33-70% of the total mixture; the diluent is any one of sand and salt; the reason for adding the diluent is: as the detonation velocity of pure explosives bought in the market is generally 6000m/s plus 5000-.
Fourthly, carrying out sand blasting treatment on one surface of the laminated composite board provided with the isolation board 3 to remove surface corrosion;
fifthly, rolling the surface, provided with the partition plate 3, of the layered composite plate as the inner surface of the container, machining a groove at the butt joint part, and pressing an end enclosure; this patent all processes at the upper end and the lower extreme of butt joint department has the welding groove, and the angle of the groove of butt joint department processing is 60~70, and weld gap is 1~3mm, and the truncated edge is 3~5 mm.
Step six, carrying out butt welding by adopting a consumable electrode argon arc welding or manual welding rod welding method; firstly welding a heat-resistant steel plate, and then welding an inner wall isolation plate 3;
and seventhly, obtaining a tank body after welding, and carrying out titanizing treatment on the inner surface of the tank body to isolate Fe elements from entering a titanium sponge product. The titanizing treatment method comprises the following steps: after the titanium powder is coated on the surface of the isolation plate 3, the heating temperature is 900-1050 ℃, and the heat preservation time is 3-8 hours.
The invention abandons the idea of taking a medium-thickness container steel plate as a main strength supporting material and heat-resistant steel as a strength supporting material, develops the characteristic of high strength at high temperature, increases the thickness of the heat-resistant steel and the strength of a tank body, and thus produces the high-temperature-resistant and oxidation-resistant sponge titanium still steaming furnace tank body. The method adopts heat-resistant steel as the material of the outer wall of the reduction distillation reactor, plays a role of strength support, prolongs the service life of the tank body, selects pure iron or common steel plates as the material of the inner wall of the reduction distillation reactor,
the reactor not only can greatly prolong the service life of the reactor, reduce the manufacturing cost of the titanium sponge, reduce the content of impurities such as Cr, Ni and the like in the titanium sponge, improve the quality of the titanium sponge and improve the smelting level of special metals in China. The heat-resistant steel plate disclosed by the patent has the advantages that the heat resistance is over 800 ℃, the welding performance is excellent, and the steel plate is easy to obtain; the high temperature properties of the common heat-resistant steel plates are shown in Table 1
TABLE 1
The invention aims to develop a high-temperature-resistant and oxidation-resistant steaming furnace tank body, which can greatly prolong the service life, greatly reduce the content of Cr, Ni and other impurity elements in titanium sponge and improve the smelting quality of the titanium sponge. Thereby improving the purity of the titanium product in China and having important strategic significance in the fields of aviation, aerospace, ocean and the like.
Example one
1. Preparing a 30 x 2000 x 6000mm heat-resistant stainless steel 347 (H) -heat-resistant steel plate 5, polishing the surface to remove dirt, exposing metallic luster, and horizontally placing the polished surface on the fine sand foundation 6;
2. using a copper sheet with 0.2 × 12 × 30mm, folding the copper sheet into a V-shaped plate-supporting plate 4 with the height of 12mm and the angle of 90 degrees, and placing the V-shaped plate-supporting plate on the surface of a heat-resistant steel plate 5, wherein the row pitch is 500mm and the pitch is 500 mm;
3. a pure iron plate DT4E with the size of 5 x 2050 x 6100mm is taken as a separation plate 3, and the polished pure iron plate is placed on the V-shaped copper sheet with the polished surface facing downwards;
4. uniformly paving the modulated explosives 2 on the pure iron plate, wherein the explosion speed is 1800 plus 2000m/s, and the explosive layering thickness is 40 mm;
5. filling pure explosive in the center of the pure iron plate, and inserting a detonator 1; after detonation, obtaining a pure iron and heat-resistant stainless steel 347 laminated composite board;
6. processing a bevel on the layered composite plate according to the angle of 60 degrees shown in figure 2, and rolling or pressing a seal head by taking a pure iron plate DT4E as the inner surface of the container;
7. welding by adopting a manual welding rod or consumable electrode argon arc welding method; firstly welding a heat-resistant steel plate, namely heat-resistant stainless steel 347, wherein a welding material adopts an A132 welding rod or welding wire (ER 347), a transition layer adopts a welding rod A312 or welding wire (ER309Mo), and then a pure iron layer is welded by adopting a J350 welding rod;
8. after welding the tank body, performing sand blasting treatment on the pure iron plate DT4E on the inner surface of the tank body, coating titanium powder on the surface of the pure iron DT4E, heating at 900-1050 ℃, preserving heat for 3-8 hours, and finishing the infiltration process of titanium powder particles and Q245R in the constant temperature process. Finally, the titanium sponge steaming furnace tank body which can prolong the service life of the steaming furnace and isolate elements such as Fe, Cr, Ni and the like is manufactured.
Example two
1. Preparing a heat-resistant stainless steel 321 (H) -heat-resistant steel plate 5 with the size of 35 x 3000 x 6000mm, polishing the surface to remove dirt, exposing metallic luster, and horizontally placing the polished surface on the fine sand foundation 6;
2. using a copper sheet with 0.3X 14X 30mm, folding the copper sheet into a V-shaped angle-supporting plate 4 with the height of 14mm and the angle of 90 degrees, placing the V-shaped angle-supporting plate on the surface of the heat-resistant steel plate, and arranging the heat-resistant steel plate at the row pitch of 400mm and the spacing of 500 mm;
3. a container steel plate with the size of 6 x 3050 x 6100mm as a Q245R is used as a separation plate (3), and the polished steel plate is placed on a V-shaped copper sheet with the polished surface facing downwards;
4. uniformly paving the prepared explosives 2 on the steel plate, wherein the explosion speed is 1800 plus 2000m/s, and the thickness is 50 mm;
5. filling high explosive at the center of the steel plate, inserting a detonator 1, and detonating to obtain a container steel plate Q245R + heat-resistant stainless steel 321 layered composite plate;
6. processing a bevel on the layered composite plate according to the angle of 70 degrees shown in figure 2, and rolling or pressing a seal head by taking a container steel plate Q245R as the inner surface of a container;
7. welding by adopting a manual welding rod or consumable electrode argon arc welding method; firstly welding heat-resistant stainless steel 321, adopting an A132 welding rod or welding wire (ER 347) as a welding material, adopting a welding rod A312 or welding wire (ER309Mo) as a transition layer, then welding container steel plate Q245R, and still adopting an A312 or welding wire (ER309Mo) welding rod;
8. after the tank body is welded, sand blasting is carried out on the steel plate Q245R of the container on the inner surface of the tank body, titanium powder is coated on the surface of the steel plate Q245R of the container, heating is carried out at 900-1050 ℃, heat preservation is carried out for 3-8 hours, and the titanium powder particles and the steel plate of the container finish the infiltration process in the constant temperature process. Finally, the titanium sponge steaming furnace tank body which can prolong the service life of the steaming furnace and isolate elements such as Fe, Cr, Ni and the like is manufactured.
The device of the present invention may have other forms than the above-described embodiments, and it should be understood that any simple modification, equivalent change and modification made to the above-described embodiments according to the technical spirit of the present invention fall within the scope of the present invention.
Claims (10)
1. A preparation method of a high-purity titanium sponge steaming furnace tank body is characterized by comprising the following steps: the method comprises the following steps:
polishing the surface of a heat-resistant steel plate to remove dirt, exposing metallic luster, and horizontally placing the polished surface on a foundation;
placing a plurality of supporting assemblies above the polished surface of the heat-resistant steel plate, and placing the isolation plate on the supporting assemblies;
thirdly, laying explosives on the partition board, and detonating to obtain a layered composite board;
fourthly, carrying out sand blasting treatment on one surface of the laminated composite board provided with the isolation board to remove surface corrosion;
rolling the surface, provided with the partition plate, of the layered composite plate as the inner surface of the container, machining a groove at a butt joint part, and pressing an end enclosure;
step six, carrying out butt welding by adopting a consumable electrode argon arc welding or manual welding rod welding method; firstly welding heat-resistant steel, and then welding an inner wall isolation plate;
and seventhly, obtaining the tank body after welding is finished, and carrying out titanizing treatment on the inner surface of the tank body to obtain a finished product.
2. The preparation method of the high-purity titanium sponge steaming furnace tank body according to claim 1, which is characterized by comprising the following steps of: the thickness of the heat-resistant steel plate in the first step is 28-55 mm.
3. The preparation method of the high-purity titanium sponge steaming furnace tank body according to claim 1, which is characterized by comprising the following steps of: and the thickness of the isolating plate in the second step is 3-5 mm.
4. The method for preparing the high-purity titanium sponge steaming furnace tank body according to claim 1, which is characterized in that: the isolation plate in the second step is any one of a steel plate of the container and pure iron.
5. The preparation method of the high-purity titanium sponge steaming furnace tank body according to claim 1, which is characterized by comprising the following steps of: the supporting assembly in the second step comprises a plurality of supporting plates, and the supporting plates are arranged above the heat-resistant steel plate in a rectangular array.
6. The method for preparing the high-purity titanium sponge steaming furnace tank body according to claim 5, which is characterized in that: the height of the supporting plate in the vertical direction is 8-12 mm, and the distance between the rectangular arrays is 200-500 mm.
7. The method for preparing the high-purity titanium sponge steaming furnace tank body according to claim 6, which is characterized in that: the supporting plate is a V-shaped plate, and the V-shaped plate is formed by folding an annealed pure copper plate with the thickness of 0.1-0.3 mm.
8. The method for preparing the high-purity titanium sponge steaming furnace tank body according to claim 1, which is characterized in that: the explosive in the third step is a mixture of an emulsified ammonium nitrate explosive and a diluent, wherein the diluent accounts for 33-70% of the total mixture; the diluent is any one of sand and salt; the detonation velocity of the explosive is 1800-2000m/s, the explosive laying thickness of the explosive is 35-50 mm, a detonator is inserted into the explosive laying layer, and the layered composite board is obtained after the detonator is detonated.
9. The method for preparing the high-purity titanium sponge steaming furnace tank body according to claim 1, which is characterized in that: and fifthly, the angle of the groove machined at the butt joint is 60-70 degrees, the welding gap is 1-3 mm, and the truncated edge is 3-5 mm.
10. The method for preparing the high-purity titanium sponge steaming furnace tank body according to claim 1, which is characterized in that: the titanizing treatment method in the seventh step comprises the following steps: after the titanium powder is coated on the surface of the isolation plate, the heating temperature is 900-1050 ℃, and the heat preservation time is 3-8 hours.
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