CN114749747A - Preparation method for welding sapphire spherical cover and titanium alloy - Google Patents
Preparation method for welding sapphire spherical cover and titanium alloy Download PDFInfo
- Publication number
- CN114749747A CN114749747A CN202210377327.5A CN202210377327A CN114749747A CN 114749747 A CN114749747 A CN 114749747A CN 202210377327 A CN202210377327 A CN 202210377327A CN 114749747 A CN114749747 A CN 114749747A
- Authority
- CN
- China
- Prior art keywords
- sapphire
- transition ring
- titanium alloy
- welding
- kovar alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/085—Cooling, heat sink or heat shielding means
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
Abstract
The invention discloses a preparation method for welding a sapphire spherical cover and a titanium alloy, and relates to the technical field of dissimilar material welding. The novel kovar alloy spherical cover comprises a sapphire spherical cover body, a kovar alloy transition ring and a titanium alloy shell, wherein the titanium alloy shell is located at the lowest part, the kovar alloy transition ring is sleeved at the upper end of the titanium alloy shell, a second welding material is filled on a contact plane between the titanium alloy shell and the kovar alloy transition ring, and the sapphire spherical cover body is placed on the top surface of the kovar alloy transition ring. The invention adopts segmented welding, firstly welds the titanium alloy shell and the kovar alloy transition ring, and then welds the kovar alloy transition ring and the sapphire spherical cover body, so as to ensure that the welded product can meet the requirements of the working environment under severe conditions of pneumatic heating temperature, stronger pneumatic pressure, salt mist and the like, and solve the problems that the connecting strength between the existing sapphire spherical cover body and the titanium alloy shell is insufficient, and the welded finished parts can not meet the requirements of high-temperature and high-speed operation.
Description
Technical Field
The invention belongs to the technical field of dissimilar material welding, and particularly relates to a preparation method for welding a sapphire ball cover and a titanium alloy.
Background
At present, the connection technology of the sapphire spherical cover and the titanium alloy is paid much attention as one of the key technologies of the existing aircraft equipment, and the requirements of the working environment under severe conditions such as pneumatic heating temperature, stronger pneumatic pressure, salt mist and the like can be met after the connection.
The connection method of the sapphire ball cover and the titanium alloy used in China is glue joint, and the connection method has great defects. The adhesive joint has low strength, can not bear high temperature (more than 300 ℃), and the joint surface is easy to age, thus seriously influencing the service life and the reliability of the connecting piece. In order to meet the harsh requirements of certain specific industries (military industry, aerospace and the like) and meet the special application requirements of special application occasions, a new method for realizing high-quality welding of the sapphire ball cover and the titanium alloy is urgently needed to solve the problems.
Disclosure of Invention
The invention aims to provide a preparation method for welding a sapphire ball cover and a titanium alloy, which adopts segmented welding, firstly welds a titanium alloy shell and a kovar alloy transition ring, and then welds the kovar alloy transition ring and a sapphire ball cover body, ensures that the welded product can meet the requirements of working environments under severe conditions of pneumatic heating temperature, stronger pneumatic pressure, salt mist and the like, and solves the problems that the connection strength between the existing sapphire ball cover body and the titanium alloy shell is insufficient, and the welded finished parts cannot meet the requirements of high-temperature and high-speed operation.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to a preparation method for welding a sapphire spherical cover and a titanium alloy, which comprises a sapphire spherical cover body, a kovar alloy transition ring and a titanium alloy shell, wherein the titanium alloy shell is positioned at the lowest part, the kovar alloy transition ring is sleeved at the upper end of the titanium alloy shell, a contact plane between the titanium alloy shell and the kovar alloy transition ring is filled with a second welding flux, the sapphire spherical cover body is placed on the top surface of the kovar alloy transition ring, and a contact plane between the sapphire spherical cover body and the kovar alloy transition ring is filled with a first welding flux;
the preparation method comprises the following specific steps:
s1: ultrasonically cleaning the sapphire spherical cover body, the kovar alloy transition ring and the titanium alloy shell;
s2: putting the titanium alloy shell on the working surface of a brazing furnace, and sleeving the kovar alloy transition ring on the titanium alloy shell;
s3: filling 1g of second solder on a contact plane between the titanium alloy shell and the kovar alloy transition ring;
s4: closing the furnace door, and starting a transition ring welding program;
s5: after the welding of the kovar alloy transition ring is finished, after the temperature is reduced to 50 ℃, opening a furnace door, checking whether the kovar alloy transition ring is welded right and whether the solder flows uniformly, and entering next sapphire welding without problems;
s6: placing the sapphire ball cover body above the kovar alloy transition ring;
s7: filling 0.9g of first welding flux on a contact plane between the sapphire ball cover body and the kovar alloy transition ring;
s8: adjusting the position of the sapphire spherical cover body by using a tool, ensuring the coaxiality of the three parts, closing the furnace door and starting a sapphire welding program;
s9: after the sapphire spherical cover body is welded, after the temperature is reduced to 50 ℃, a furnace door is opened, whether the sapphire spherical cover body is broken or not and whether a welding line is uniform and smooth or not are checked, and if no flaw exists, the welding is successful.
Furthermore, the material of the kovar alloy transition ring adopts kovar alloy 4J 34.
Further, the first solder is provided as 70Cu-25Ti-5Zr solder.
Further, the second solder is provided as a Ti-21Cu-13Zr-9Ni solder.
Further, the specific steps of the welding procedure of the transition ring in S4 include:
s41: vacuumizing the brazing furnace to 5.0E-4, and opening circulating cooling water;
s42: heating the brazing furnace from room temperature to 650 ℃, controlling the heating time to be 60min, and keeping the temperature at 650 ℃ for 30 min;
s43: continuously heating to 800 deg.C, controlling heating time at 15min, and maintaining at 800 deg.C for 30 min;
s44: continuing to heat to 930 deg.C for 12min, and maintaining at 930 deg.C for 30 min;
s45: gradually cooling to room temperature, and controlling the cooling time at 720 min.
Furthermore, the coaxiality of the sapphire ball cover body and the kovar alloy transition ring in the S8 is smaller than 0.02mm, so that the welding quality is ensured, and the welding finished product is prevented from being difficult to meet the working environment requirements under severe conditions such as pneumatic heating temperature, stronger pneumatic pressure and salt spray.
Further, the specific steps of the sapphire welding procedure in S8 include:
s81: vacuumizing the brazing furnace to 5.0E-4, and opening circulating cooling water;
s82: heating the brazing furnace from room temperature to 700 ℃, controlling the heating time to be 60min, and keeping the temperature at 700 ℃ for 30 min;
s83: continuing heating to 810 deg.C for 15min, and maintaining the temperature at 810 deg.C for 45 min;
s84: continuously heating to 945 deg.C for 12min, and keeping the temperature at 945 deg.C for 45 min;
s85: gradually cooling to room temperature, and controlling the cooling time at 720 min.
The invention has the following beneficial effects:
1. the method adopts segmented welding, firstly welds the titanium alloy shell and the kovar alloy transition ring, and then welds the kovar alloy transition ring and the sapphire spherical cover body, so as to ensure that the welded product can meet the requirements of the working environment under severe conditions of pneumatic heating temperature, stronger pneumatic pressure, salt mist and the like, and solve the problems that the connection strength between the existing sapphire spherical cover body and the titanium alloy shell is insufficient, and the welded finished parts can not meet the requirements of high-temperature and high-speed operation;
2. when the welding titanium alloy shell and the kovar alloy transition ring are welded, a stepped temperature heating curve is adopted, the temperature and the time are strictly controlled, the temperature is accurately controlled to be kept at 650 ℃, 800 ℃ and 930 ℃, the heating and cooling rates are strictly controlled, the kovar alloy transition ring and the welding titanium alloy shell can be completely welded together, the special surface shapes of the kovar alloy transition ring and the titanium alloy shell ensure that the welding contact area of the kovar alloy transition ring and the welding titanium alloy shell is larger, and further the welding firmness is improved;
3. when the kovar alloy transition ring and the sapphire spherical cover body are welded, a stepped temperature heating curve is adopted, the temperature and the time are strictly controlled, the temperature is accurately controlled to be 700 ℃, 810 ℃ and 945 ℃, the temperature rise and the temperature reduction rate are strictly controlled, and the kovar alloy transition ring and the sapphire spherical cover body can be completely welded together.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts based on these drawings:
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a schematic diagram of the structure at A in FIG. 1 according to the present invention;
FIG. 3 is a temperature profile of the titanium alloy housing of the present invention as it is welded to the kovar transition ring;
FIG. 4 is a temperature profile of the kovar alloy transition ring of the present invention welded to a sapphire dome body.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a sapphire ball cover body; 2. a kovar alloy transition ring; 3. a titanium alloy housing; 4. a first solder; 5. and a second solder.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1-2, the invention is a method for preparing a sapphire spherical cap welded with a titanium alloy, comprising a sapphire spherical cap body 1, a kovar alloy transition ring 2 and a titanium alloy shell 3, wherein the titanium alloy shell 3 is located at the lowest part, the kovar alloy transition ring 2 is sleeved at the upper end of the titanium alloy shell 3, the kovar alloy transition ring 2 is made of kovar alloy 4J34, a second welding material 5 is filled on a contact plane between the titanium alloy shell 3 and the kovar alloy transition ring 2, the second welding material 5 is a Ti-21Cu-13Zr-9Ni welding material, the special surface shapes of the kovar alloy transition ring 2 and the titanium alloy shell 3 are adopted, two planes at the upper end and the lower end of the kovar alloy transition ring 2 are both contacted with the titanium alloy shell 3, the welding contact area between the kovar alloy transition ring 2 and the titanium alloy shell is ensured to be larger, the welding firmness is further improved, the sapphire spherical cap body 1 is placed on the top surface of the kovar alloy transition ring 2, the contact plane between the sapphire spherical cover body 1 and the kovar alloy transition ring 2 is filled with a first welding flux 4, and the first welding flux 4 is set to be 70Cu-25Ti-5Zr welding flux.
The preparation method comprises the following specific steps:
s1: ultrasonically cleaning a sapphire spherical cover body 1, a kovar alloy transition ring 2 and a titanium alloy shell 3;
s2: putting the titanium alloy shell 3 on the working surface of a brazing furnace, and sleeving the kovar alloy transition ring 2 on the titanium alloy shell 3;
s3: filling 1g of second solder 5 on a contact plane between the titanium alloy shell 3 and the kovar alloy transition ring 2;
s4: closing the furnace door, starting a transition ring welding program, accurately controlling the temperature to be kept at 650 ℃, 800 ℃ and 930 ℃, strictly controlling the heating and cooling rates, and ensuring that the kovar alloy transition ring 2 and the welding titanium alloy shell 3 can be completely welded together;
as shown in fig. 3, the transition ring welding procedure specifically includes the steps of:
s41: vacuumizing the brazing furnace to 5.0E-4, and opening circulating cooling water;
s42: heating the brazing furnace from room temperature to 650 ℃, controlling the heating time to be 60min, and keeping the temperature at 650 ℃ for 30 min;
s43: continuously heating to 800 deg.C for 15min, and maintaining at 800 deg.C for 30 min;
s44: continuing to heat to 930 deg.C for 12min, and maintaining at 930 deg.C for 30 min;
s45: gradually cooling to room temperature, and controlling the cooling time at 720 min;
s5: after the welding of the kovar alloy transition ring 2 is finished, after the temperature is reduced to 50 ℃, opening a furnace door, checking whether the kovar alloy transition ring 2 is welded right and whether the solder flows uniformly, and entering next sapphire welding step without problems;
s6: placing the sapphire spherical cover body 1 above the kovar alloy transition ring 2;
s7: filling 0.9g of first solder 4 on a contact plane between the sapphire ball cover body 1 and the kovar alloy transition ring 2;
s8: adjusting the position of the sapphire spherical cover body 1 by using a tool, ensuring that the coaxiality of the three is less than 0.02mm, closing a furnace door, starting a sapphire welding program, accurately controlling the temperature to be kept at 700 ℃, 810 ℃ and 945 ℃, strictly controlling the heating and cooling rates, and ensuring that the kovar alloy transition ring 2 and the sapphire spherical cover body 1 can be completely welded together;
as shown in fig. 4, the sapphire welding procedure specifically includes the steps of:
s81: vacuumizing the brazing furnace to 5.0E-4, and opening circulating cooling water;
s82: heating the brazing furnace from room temperature to 700 ℃, controlling the heating time to be 60min, and keeping the temperature at 700 ℃ for 30 min;
s83: continuing heating to 810 deg.C for 15min, and maintaining the temperature at 810 deg.C for 45 min;
s84: continuing to heat to 945 deg.C for 12min, and maintaining the temperature at 945 deg.C for 45 min;
s85: gradually cooling to room temperature, and controlling the cooling time to be 720 min;
s9: after the sapphire spherical cover body 1 is welded, and the temperature is reduced to 50 ℃, a furnace door is opened, whether the sapphire spherical cover body 1 is broken or not and whether a welding line is uniform and smooth or not are checked, and if no flaw exists, the welding is successful.
After the integral welding is finished, the airtightness and the welding strength are tested, the airtightness test is carried out under the specified pressure condition, no leakage exists, the requirement is met, the room temperature of the welding tensile strength reaches more than 150Mpa, and the high-temperature high-speed operation requirement can be completely met.
The above are only preferred embodiments of the present invention, and the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made to the technical solutions described in the above embodiments, and to some of the technical features thereof, are included in the scope of the present invention.
Claims (7)
1. The utility model provides a sapphire ball cover and titanium alloy welded preparation method, includes sapphire ball cover body (1), kovar alloy transition ring (2) and titanium alloy casing (3), its characterized in that: the titanium alloy shell (3) is located at the lowest part, the kovar alloy transition ring (2) is sleeved at the upper end of the titanium alloy shell (3), a contact plane between the titanium alloy shell (3) and the kovar alloy transition ring (2) is filled with second welding flux (5), the sapphire ball cover body (1) is placed on the top surface of the kovar alloy transition ring (2), and a contact plane between the sapphire ball cover body (1) and the kovar alloy transition ring (2) is filled with first welding flux (4);
the preparation method comprises the following specific steps:
s1: ultrasonically cleaning a sapphire spherical cover body (1), a kovar alloy transition ring (2) and a titanium alloy shell (3);
s2: putting the titanium alloy shell (3) on a working surface of a brazing furnace, and sleeving the kovar alloy transition ring (2) on the titanium alloy shell (3);
s3: filling 1g of second solder (5) on a contact plane between the titanium alloy shell (3) and the kovar alloy transition ring (2);
s4: closing the furnace door, and starting a transition ring welding program;
s5: after the welding of the kovar alloy transition ring (2) is finished, after the temperature is reduced to 50 ℃, opening a furnace door, checking whether the kovar alloy transition ring (2) is welded right and whether the solder flows uniformly, and entering the next sapphire welding step without problems;
s6: placing the sapphire ball cover body (1) above the kovar alloy transition ring (2);
s7: filling 0.9g of first welding flux (4) on a contact plane between the sapphire spherical cover body (1) and the kovar alloy transition ring (2);
s8: adjusting the position of the sapphire spherical cover body (1) by using a tool, ensuring the coaxiality of the three, closing a furnace door, and starting a sapphire welding program;
s9: after the sapphire spherical cover body (1) is welded, and the temperature is reduced to 50 ℃, the furnace door is opened, whether the sapphire spherical cover body (1) is broken or not is checked, whether a welding line is uniform and smooth or not is checked, and if no flaw exists, the welding is successful.
2. The method for preparing the sapphire spherical cap welded with the titanium alloy as claimed in claim 1, wherein the kovar alloy transition ring (2) is made of kovar alloy 4J 34.
3. The method for preparing the sapphire spherical cap welded with the titanium alloy as claimed in claim 1, wherein the first solder (4) is 70Cu-25Ti-5Zr solder.
4. The method for preparing a sapphire ball cover welded with titanium alloy as claimed in claim 1, wherein the second solder (5) is Ti-21Cu-13Zr-9Ni solder.
5. The method for preparing the sapphire spherical cap welded with the titanium alloy as claimed in claim 1, wherein the transition ring welding procedure in S4 includes the following specific steps:
s41: vacuumizing the brazing furnace to 5.0E-4, and opening circulating cooling water;
s42: heating the brazing furnace from room temperature to 650 ℃, controlling the heating time to be 60min, and keeping the temperature at 650 ℃ for 30 min;
s43: continuously heating to 800 deg.C for 15min, and maintaining at 800 deg.C for 30 min;
s44: continuing to heat to 930 deg.C for 12min, and maintaining at 930 deg.C for 30 min;
s45: gradually cooling to room temperature, and controlling the cooling time at 720 min.
6. The method for preparing the sapphire spherical cap welded with the titanium alloy as claimed in claim 1, wherein the coaxiality of the sapphire spherical cap body (1) and the kovar alloy transition ring (2) in the S8 is less than 0.02 mm.
7. The method for preparing the sapphire spherical cap welded with the titanium alloy as claimed in claim 1, wherein the sapphire welding procedure in S8 comprises the following specific steps:
s81: vacuumizing the brazing furnace to 5.0E-4, and opening circulating cooling water;
s82: heating the brazing furnace from room temperature to 700 ℃, controlling the heating time to be 60min, and keeping the temperature at 700 ℃ for 30 min;
s83: continuing heating to 810 deg.C for 15min, and maintaining the temperature at 810 deg.C for 45 min;
s84: continuing to heat to 945 deg.C for 12min, and maintaining the temperature at 945 deg.C for 45 min;
s85: gradually cooling to room temperature, and controlling the cooling time at 720 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210377327.5A CN114749747A (en) | 2022-04-12 | 2022-04-12 | Preparation method for welding sapphire spherical cover and titanium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210377327.5A CN114749747A (en) | 2022-04-12 | 2022-04-12 | Preparation method for welding sapphire spherical cover and titanium alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114749747A true CN114749747A (en) | 2022-07-15 |
Family
ID=82329267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210377327.5A Pending CN114749747A (en) | 2022-04-12 | 2022-04-12 | Preparation method for welding sapphire spherical cover and titanium alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114749747A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5884864A (en) * | 1996-09-10 | 1999-03-23 | Raytheon Company | Vehicle having a ceramic radome affixed thereto by a compliant metallic transition element |
| US20040256442A1 (en) * | 2003-06-17 | 2004-12-23 | Kennametal Inc. | Coated cutting tool with brazed-in superhard blank |
| US20050045766A1 (en) * | 2002-12-04 | 2005-03-03 | Duden Quenten E. | Form factored compliant metallic transition element for attaching a ceramic element to a metallic element |
| CN103949742A (en) * | 2014-04-25 | 2014-07-30 | 甘肃虹光电子有限责任公司 | Method for actively sealing sapphire sheet and metal |
| CN109926748A (en) * | 2019-03-22 | 2019-06-25 | 中国科学院上海光学精密机械研究所 | A kind of vacuum observation window of brazing metal sealing-in and preparation method thereof |
| CN210254765U (en) * | 2019-07-22 | 2020-04-07 | 深圳市宏钢机械设备有限公司 | Sapphire optical window and metal packaging structure of brazing |
| CN113941766A (en) * | 2021-09-18 | 2022-01-18 | 合肥圣达电子科技实业有限公司 | Ceramic packaging shell and preparation method thereof |
| DE102020124916A1 (en) * | 2020-09-24 | 2022-03-24 | Rheinische Friedrich-Wilhelms-Universität Bonn | Attachment of an optically transparent window to a metal work piece |
-
2022
- 2022-04-12 CN CN202210377327.5A patent/CN114749747A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5884864A (en) * | 1996-09-10 | 1999-03-23 | Raytheon Company | Vehicle having a ceramic radome affixed thereto by a compliant metallic transition element |
| US20050045766A1 (en) * | 2002-12-04 | 2005-03-03 | Duden Quenten E. | Form factored compliant metallic transition element for attaching a ceramic element to a metallic element |
| US20040256442A1 (en) * | 2003-06-17 | 2004-12-23 | Kennametal Inc. | Coated cutting tool with brazed-in superhard blank |
| CN103949742A (en) * | 2014-04-25 | 2014-07-30 | 甘肃虹光电子有限责任公司 | Method for actively sealing sapphire sheet and metal |
| CN109926748A (en) * | 2019-03-22 | 2019-06-25 | 中国科学院上海光学精密机械研究所 | A kind of vacuum observation window of brazing metal sealing-in and preparation method thereof |
| CN210254765U (en) * | 2019-07-22 | 2020-04-07 | 深圳市宏钢机械设备有限公司 | Sapphire optical window and metal packaging structure of brazing |
| DE102020124916A1 (en) * | 2020-09-24 | 2022-03-24 | Rheinische Friedrich-Wilhelms-Universität Bonn | Attachment of an optically transparent window to a metal work piece |
| CN113941766A (en) * | 2021-09-18 | 2022-01-18 | 合肥圣达电子科技实业有限公司 | Ceramic packaging shell and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 尚建利 等: "关于蓝宝石与金属连接方法的研究", 《焊接》, no. 1, pages 45 - 48 * |
| 淮军锋 等: "TC4钛合金钎焊工艺与接头组织性能研究", 《焊接》, no. 5, pages 57 - 60 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102699533B (en) | Self-adaptive laser welding fixture for ultra-thin metal bipolar plate of fuel cell | |
| CN106670749B (en) | A kind of production method of point of valve forming head | |
| CN103672008A (en) | Ball valve with all-welded valve bodies and welding method of ball valve | |
| CN114749747A (en) | Preparation method for welding sapphire spherical cover and titanium alloy | |
| CN203627875U (en) | Ball valve with all-welded valve body | |
| CN108015409A (en) | A kind of diffusion welding method of band branch wrench fixed supported slab | |
| CN209110378U (en) | Anode steel claw welding tooling | |
| CN109365976A (en) | A kind of production method and mold of Resistance Welding receiving electrode | |
| CN104493341B (en) | Shield electric machine stator can and lower flange welding method and the equipment using thereof | |
| CN111644781B (en) | Forming method of segment-shaped end socket | |
| CN212155771U (en) | High leakproofness head | |
| CN208366148U (en) | Plate heat exchanger adapter tube assembling structure | |
| CN110670065B (en) | Simple sealing device of material-increasing and material-reducing combined machining center for manufacturing impeller blades | |
| CN210034658U (en) | Heat exchanger pipe orifice structure | |
| CN110137655A (en) | The method of manufacturing technology of special-shaped double ridge sealing coaxial waveguide conversions | |
| CN101073859B (en) | Method for welding high-temperature, high-pressure and high-flowing speed armoured theremocouple | |
| CN201462059U (en) | Ball value for refrigeration and air conditioning device | |
| CN111375886A (en) | Cooling device of friction welding stirring head | |
| CN208743952U (en) | A kind of novel welding structure that skirt is connect with end socket | |
| CN207368021U (en) | A kind of lithium ion battery ceramic cover plate component and lithium ion battery | |
| CN208204298U (en) | Adapter tube, blind flange and pressure vessel | |
| CN109237023A (en) | A kind of blocking technological holes structure and method for blocking | |
| CN206918480U (en) | A kind of submarine transport oil pipeline external clamping type self-tightening flange bindiny mechanism | |
| CN110848557A (en) | Gas cylinder with valve seat and manufacturing process thereof | |
| CN214152655U (en) | Main body and voltage regulating switch evacuation connecting pipe that becomes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |