CN104741722A - TiNi solder vacuum brazing TZM alloy and ZrC/W composite method - Google Patents
TiNi solder vacuum brazing TZM alloy and ZrC/W composite method Download PDFInfo
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- CN104741722A CN104741722A CN201510186462.1A CN201510186462A CN104741722A CN 104741722 A CN104741722 A CN 104741722A CN 201510186462 A CN201510186462 A CN 201510186462A CN 104741722 A CN104741722 A CN 104741722A
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- zrc
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- brazing
- solder
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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
- 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
- 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
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
Abstract
The invention discloses a TiNi solder vacuum brazing TZM alloy and ZrC/W composite method. The method is characterized in that TZM alloy and ZrC/W composites are brazed in the vacuum condition through TiNi high-temperature solders. The method comprises the steps of manufacturing Ni wires (foil) and Ti wires (foil) according to mass percentage into foil solders; grinding to-be-welded positions of base materials TZM and ZrC/W; performing ultrasonic cleaning on the foil solders and the brazing base materials through acetone and ethanol solutions successively; putting the foil solders between the TZM alloy and the ZrC/W composites to form a to-be-welded component, putting the component in a vacuum brazing furnace, and performing vacuumizing to 5.0*10-3Pa and heating and brazing. By means of the method, precious metal is not included in the use solders, the materials are wide, the method is economic and applicable, the manufacturing method is simple, the average shear strength of the obtained TZM alloy and ZrC/W composite brazed joints is not lower than 111MPa, and good popularization values are provided.
Description
Technical field
The invention belongs to welding technology field, be specifically related to high-temperature brazing material and preparation method thereof, it is applicable to the vacuum brazing of TZM alloy and ZrC/W composite.
Background technology
TZM is for containing 0.5%Ti and 0.08%Zr(wt.%) molybdenum alloy, have that fusing point is high, intensity is large, elastic modelling quantity is high, linear expansion coefficient is little, steam forces down, electrical and thermal conductivity is good, corrosion stability is strong and the feature such as mechanical behavior under high temperature is good, be widely used in war industry, space flight and aviation and nuclear power field, as radiation shield, bracing frame, heat exchanger, rail bar etc. on the distribution valve body in torpedo engine, rocket nozzle, gas pipeline, jet pipe throat lining and nuclear power source equipment.
ZrC-W is ZrC particle reinforce tungsten-based composite material, there is excellent mechanical behavior under high temperature, thermophysical property, anti-thermal shock and ablation resistance, in hyperthermal material field, there is wide application space, can be applicable to solid propellant rocket larynx lining, launcher shell coating, high-temperature resistance die and jig and hot cathode emissive material etc.But ZrC/W composite machinery processing difficulties, is not easily processed into complex-shaped parts, limits its extensive use in Practical Project.Therefore, realize they self or with the connection of other materials, there is important using value.TZM alloy is connected with ZrC-W composite, working (machining) efficiency can be improved, cut down finished cost, widen the scope of application of bi-material.But TZM and ZrC/W composite fusing point is higher, be difficult to form liquid phase, common melting, as the methods such as TIG, MIG, Laser Welding, electron beam welding are difficult to the connection adapting to TZM and ZrC/W composite.Soldering is the common method of dissimilar material joining, when metal and ceramic material carry out soldering, normal containing active element (as Ti, Zr, Nb, Hf, Ta etc.) in solder.
The applicant retrieves, in correlative theses document, the report having the people such as Sichuan University Qingyuan Xu to adopt Ti base alloy to carry out TZM alloy and graphite soldering to study, Harbin Institute of Technology Song Chang treasured waits people to adopt TiNi solder brazing to connect the report of ZrC-SiC composite ceramics joint, in published paper document and patent document, report there are no about the Patents carrying out being connected between self or bi-material between TZM alloy with ZrC/W composite.。
Because TZM alloy and ZrC/W composite all belong to high-temperature material, can be applicable to the hot-end component of Aeronautics and Astronautics, therefore jointing should have good resistance to elevated temperatures, and therefore, the applicant selects TiNi high-temp solder to carry out brazing to bi-material.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the TiNi solder vacuum brazing TZM alloy providing a kind of welding effect good and the method for ZrC/W composite.
A method for TiNi solder vacuum brazing TZM alloy and ZrC/W composite, it is characterized in that adopting TiNi high-temp solder at vacuum condition soldering TZM alloy and ZrC/W composite, concrete steps are as follows:
Step one, take the Ti of Ni and 70-74% of 26-30% by mass percentage, both equal 100% at sum, are smelted into alloy pig, make paillon foil, obtain paillon foil solder;
Step 2, use 300 orders successively, 500 orders, 800 orders, 1000 order SiC sand paper and diamond sand table carry out grinding process to the position to be welded of TZM and ZrC/W respectively, obtain soldering mother metal;
Step 3, paillon foil solder step one and step 2 obtained and soldering mother metal immerse in acetone, ultrasonic cleaning 15min ~ 20min, and then with absolute ethyl alcohol, ultrasonic cleaning 5 ~ 10min, dries stand-by;
Step 4, the paillon foil solder that step 3 is obtained and soldering mother metal, by from bottom to top sequentially placing TZM alloy, paillon foil solder and ZrC/W composite successively, the graphite briquetting that 2KPa pressure at least can be provided is placed again on ZrC/W composite, treat the displacement of weldment in brazing process with restriction, form assembly to be welded;
Step 5, the assembly to be welded obtained in step 4 is placed in vacuum brazing furnace, is evacuated down to 5.0 × 10
-3pa, start heat temperature raising, heating rate is 20 DEG C/min; After temperature reaches 800 DEG C, heating rate is changed into 10 DEG C/min, be heated to 940 DEG C, be incubated 5 minutes; Being heated to brazing temperature with the speed of 5 DEG C/min is again 1000 DEG C ~ 1080 DEG C, and insulation is no more than 20min; With the cooling of the speed of 5 DEG C/min., when temperature reaches 200 DEG C, close heater; With stove cooling, until room temperature; Complete and utilize TiNi solder vacuum brazing TZM alloy and ZrC/W composite.
The ZrC/W composite related in the present invention, by volume percentage, be to be made through high temperature insostatic pressing (HIP) by the ZrC of 30 ~ the 50% and W of 50 ~ 70% to form, both equal 100% at sum.
Ni silk (paper tinsel) purity of the present invention is not less than 99.5%(wt. %), the purity of Ti silk (paper tinsel) is not less than 99.6%(wt. %).
Take the Ni silk (paper tinsel) of 26-30 part, the Ti silk (paper tinsel) of 70-74 part in step one of the present invention by mass percentage, put into vacuum melting furnace crucible, be first evacuated down to 5.0 × 10
-3after Pa, applying argon gas again, alloy pig is obtained 10 times by electric arc melt back in crucible, with the thin slice that linear cutter becomes 0.5mm ~ 0.6mm thick, then the tow sides of thin slice are carried out mechanical polishing, finally become thickness to be the TiNi paillon foil of 0.1mm with 1000 object SiC sand paperings, obtain paillon foil solder.
With the heating rate of 5 DEG C/min in step 5 of the present invention, be heated to brazing temperature from 940 DEG C, brazing temperature be respectively 1000 DEG C or 1020 DEG C or 1040 DEG C or 1060 or 1080 DEG C carry out brazing, temperature retention time is no more than 20min.
With the heating rate of 5 DEG C/min in step 5 of the present invention, be heated to best brazing temperature 1020 DEG C from 940 DEG C and carry out brazing, insulation Best Times is 10min.
The welding surface of TZM alloy in step 2 in the present invention, use 300 orders successively, 500 orders, 800 orders, 1000 object SiC sand paper are polished; By the welding surface of ZrC/W composite, use 300 orders successively, 500 orders, 800 orders, 1000 object diamond sand tables are polished;
The solder used in the present invention is not containing precious metal, and material is extensive, economic and practical, and preparation method is simple, and TZM alloy and the average soldering joint strength of ZrC/W composite of acquisition are not less than 111MPa, have good promotional value.
Accompanying drawing explanation
Fig. 1 is for treating weldment layout drawing
Fig. 2 is the process chart of soldering,
Fig. 3, for adopting Ti72Ni28 soldering, at 1020 DEG C, during temperature retention time 10min, obtains the back scattering picture of soldered fitting.
Detailed description of the invention
The invention will be further described below:
A kind of method of TiNi solder vacuum brazing TZM alloy and ZrC/W composite, it is characterized in that adopting TiNi high-temp solder at vacuum condition soldering TZM alloy and ZrC/W composite, described Ni silk or Ni paper tinsel purity are not less than 99.5%, the purity of Ti silk or Ti paper tinsel is not less than 99.6%, ZrC/W composite, by volume percentage, be to be made through high temperature insostatic pressing (HIP) by the ZrC of 30 ~ the 50% and W of 50 ~ 70% to form, both equal 100% at sum.
Concrete steps are as follows:
Step one, take the Ni silk (paper tinsel) of 26-30% and the Ti silk (paper tinsel) of 70-74% by mass percentage, both equal 100% at sum, be smelted into alloy pig, make paillon foil, specifically take the Ni silk (paper tinsel) of 26-30 part, the Ti silk (paper tinsel) of 70-74 part by mass percentage, put into vacuum melting furnace crucible, be first evacuated down to 5X 10
-3after Pa, applying argon gas again, alloy pig is obtained 10 times by electric arc melt back in crucible, with the thin slice that linear cutter becomes 0.5mm-0.6mm thick, then the tow sides of thin slice are carried out mechanical polishing, finally become thickness to be the TiNi paillon foil of 0.1mm with 1000 object SiC sand paperings, obtain paillon foil solder.
Step 2, use 300 orders successively, 500 orders, 800 orders, 1000 order SiC sand paper and diamond sand table carry out grinding process to the position to be welded of TZM and ZrC/W respectively, obtain soldering mother metal; Specifically use 300 orders successively, 500 orders, 800 orders, 1000 object SiC sand paper are polished; By the welding surface of ZrC/W composite, use 300 orders successively, 500 orders, 800 orders, 1000 object diamond sand tables are polished;
Step 3, paillon foil solder step one and step 2 obtained and soldering mother metal immerse in acetone, ultrasonic cleaning 15min ~ 20min, and then with absolute ethyl alcohol, ultrasonic cleaning 5 ~ 10min, dries stand-by;
Step 4, the paillon foil solder that step 3 is obtained and soldering mother metal, by from bottom to top sequentially placing TZM alloy, paillon foil solder and ZrC/W composite successively, the graphite briquetting that 2KPa pressure at least can be provided is placed again on ZrC/W composite, treat the displacement of weldment in brazing process with restriction, form assembly to be welded;
Step 5, the assembly to be welded obtained in step 4 is placed in vacuum brazing furnace, is evacuated down to 5.0X10
-3pa, start heat temperature raising, heating rate is 20 DEG C/min; After temperature reaches 800 DEG C, heating rate is changed into 10 DEG C/min, be heated to 940 DEG C, be incubated 5 minutes; Being heated to brazing temperature with the speed of 5 DEG C/min is again 1000 DEG C ~ 1080 DEG C, and temperature retention time is no more than 20min; When best brazing temperature is 1020 DEG C, temperature retention time is 10min; Then, with the cooling of the speed of 5 DEG C/min., when temperature reaches 200 DEG C, heater is closed; With stove cooling, until room temperature; Complete and utilize TiNi solder vacuum brazing TZM alloy and ZrC/W composite.
The solder used in the present invention is not containing precious metal, and material is extensive, economic and practical, and preparation method is simple, and TZM alloy and the average soldering joint strength of ZrC/W composite of acquisition are not less than 111MPa, have good promotional value.
Claims (7)
1. a method for TiNi solder vacuum brazing TZM alloy and ZrC/W composite, it is characterized in that adopting TiNi high-temp solder at vacuum condition soldering TZM alloy and ZrC/W composite, concrete steps are as follows:
Step one, take the Ti of Ni and 70-74% of 26-30% by mass percentage, both equal 100% at sum, are smelted into alloy pig, make paillon foil, obtain paillon foil solder;
Step 2, use 300 orders successively, 500 orders, 800 orders, 1000 order SiC sand paper and diamond sand table carry out grinding process to the position to be welded of TZM and ZrC/W respectively, obtain soldering mother metal;
Step 3, paillon foil solder step one and step 2 obtained and soldering mother metal immerse in acetone, ultrasonic cleaning 15min ~ 20min, and then with ethanol, ultrasonic cleaning 5 ~ 10min, dries stand-by;
Step 4, the paillon foil solder that step 3 is obtained and soldering mother metal, by from bottom to top sequentially placing TZM alloy, paillon foil solder and ZrC/W composite successively, the graphite briquetting that 2KPa pressure at least can be provided is placed again on ZrC/W composite, treat the displacement of weldment in brazing process with restriction, form assembly to be welded;
Step 5, the assembly to be welded obtained in step 4 is placed in vacuum brazing furnace, is evacuated down to 5.0 × 10
-3pa, start heat temperature raising, heating rate is 20 DEG C/min; After temperature reaches 800 DEG C, heating rate is changed into 10 DEG C/min, be heated to 940 DEG C, be incubated 5 minutes; Being heated to brazing temperature with the speed of 5 DEG C/min is again 1000 DEG C ~ 1080 DEG C, and insulation is no more than 20min; With the cooling of the speed of 5 DEG C/min., when temperature reaches 200 DEG C, close heater; With stove cooling, until room temperature; Complete and utilize TiNi solder vacuum brazing TZM alloy and ZrC/W composite.
2. the method for a kind of TiNi solder vacuum brazing TZM alloy according to claim 1 and ZrC/W composite, it is characterized in that ZrC/W composite, by volume percentage to be made through high temperature insostatic pressing (HIP) by the ZrC of 30 ~ the 50% and W of 50 ~ 70% to form, and both equal 100% at sum.
3. the method for a kind of TiNi solder vacuum brazing TZM alloy according to claim 1 and ZrC/W composite, is characterized in that the purity that Ni silk or Ni paper tinsel purity are not less than 99.5%, Ti silk or Ti paper tinsel is not less than 99.6%.
4. the method for a kind of TiNi solder vacuum brazing TZM alloy according to claim 1 and ZrC/W composite, it is characterized in that in step one, taking the Ni silk (paper tinsel) of 26 ~ 30 parts, the Ti silk (paper tinsel) of 70 ~ 74 parts by mass percentage, put into vacuum melting furnace crucible, be first evacuated down to 5.0 × 10
-3after Pa, applying argon gas again, alloy pig is obtained 10 times by electric arc melt back in crucible, with the thin slice that linear cutter becomes 0.5mm ~ 0.6mm thick, then the tow sides of thin slice are carried out mechanical polishing, finally become thickness to be the TiNi paillon foil of 0.1mm with 1000 object SiC sand paperings, obtain paillon foil solder.
5. the method for a kind of TiNi solder vacuum brazing TZM alloy according to claim 1 and ZrC/W composite, it is characterized in that in step 5 with the heating rate of 5 DEG C/min, brazing temperature is heated to from 940 DEG C, be respectively 1000 DEG C or 1020 DEG C or 1040 DEG C or 1060 DEG C or 1080 DEG C carry out brazing, temperature retention time is no more than 20min.
6. the method utilizing TiNi solder vacuum brazing TZM alloy and ZrC/W composite according to claims 1 or 5, is characterized in that in step 5, is heated to brazing temperature 1020 DEG C, carries out brazing, and temperature retention time is 10min.
7. the method for a kind of TiNi solder vacuum brazing TZM alloy according to claim 1 and ZrC/W composite, it is characterized in that the welding surface of TZM alloy in step 2, use 300 orders successively, 500 orders, 800 orders, 1000 object SiC sand paper are polished; By the welding surface of ZrC/W composite, use 300 orders successively, 500 orders, 800 orders, 1000 object diamond sand tables are polished.
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Cited By (6)
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|---|---|---|---|---|
| CN105598542A (en) * | 2016-01-21 | 2016-05-25 | 哈尔滨工业大学（威海） | Method for braze-sealing of Al2O3 ceramic and titanium ring in artificial retina |
| CN105834540A (en) * | 2016-05-24 | 2016-08-10 | 哈尔滨工业大学（威海） | Method for brazing TZM alloy by means of Ti-Ni high-temperature brazing filler metal |
| CN110303271A (en) * | 2019-07-23 | 2019-10-08 | 新余学院 | The titanium nickel solder and preparation and method for welding of soldering TiB+TiC hybrid buildup titanium composite material and nickel-base alloy |
| CN111515516A (en) * | 2020-04-30 | 2020-08-11 | 中国航发哈尔滨东安发动机有限公司 | Vacuum diffusion welding connection method of molybdenum-based high-temperature alloy |
| CN111822806A (en) * | 2020-07-10 | 2020-10-27 | 哈尔滨工业大学（威海） | NiZr brazing filler metal vacuum brazing Al0.3Method for CoCrFeNi high-entropy alloy |
| CN113070543A (en) * | 2021-05-20 | 2021-07-06 | 哈尔滨工业大学 | Method for brazing carbon material and nickel-based alloy by adopting Ag-Cr composite brazing filler metal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110303271A (en) * | 2019-07-23 | 2019-10-08 | 新余学院 | The titanium nickel solder and preparation and method for welding of soldering TiB+TiC hybrid buildup titanium composite material and nickel-base alloy |
| CN110303271B (en) * | 2019-07-23 | 2021-08-13 | 新余学院 | Titanium-nickel brazing filler metal for brazing TiB + TiC hybrid reinforced titanium-based composite material and nickel-based alloy and preparation and brazing methods |
| CN111515516A (en) * | 2020-04-30 | 2020-08-11 | 中国航发哈尔滨东安发动机有限公司 | Vacuum diffusion welding connection method of molybdenum-based high-temperature alloy |
| CN111822806A (en) * | 2020-07-10 | 2020-10-27 | 哈尔滨工业大学（威海） | NiZr brazing filler metal vacuum brazing Al0.3Method for CoCrFeNi high-entropy alloy |
| CN113070543A (en) * | 2021-05-20 | 2021-07-06 | 哈尔滨工业大学 | Method for brazing carbon material and nickel-based alloy by adopting Ag-Cr composite brazing filler metal |
| CN113070543B (en) * | 2021-05-20 | 2022-06-21 | 哈尔滨工业大学 | Method for brazing carbon material and nickel-based alloy by adopting Ag-Cr composite brazing filler metal |
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