CN102909450A - Brazing method of multi-flow-channel nozzle - Google Patents
Brazing method of multi-flow-channel nozzle Download PDFInfo
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- CN102909450A CN102909450A CN201210366747XA CN201210366747A CN102909450A CN 102909450 A CN102909450 A CN 102909450A CN 201210366747X A CN201210366747X A CN 201210366747XA CN 201210366747 A CN201210366747 A CN 201210366747A CN 102909450 A CN102909450 A CN 102909450A
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Abstract
A brazing method of a multi-flow-channel nozzle comprises the following steps of: combining and assembling the multi-flow-channel nozzle, wherein the lower end of the wedge-shaped brazing gap is 0mm while the upper end is 0.03mm to 0.15mm; before brazing, coating paste-like AMDRY-915 brazing filler metal on a brazed assembly; using vacuum brazing as the brazing method: starting to heat under the condition that the pressure is lower than 4*10<-2>Pa, holding the temperature after heating to 550+/-10 DEG C; heating to 920+/-10 DEG C and holding the temperature; heating to 1150+/-10 DEG C and holding the temperature; cooling to 900 DEG C by using a temperature reducing furnace; charging high-pure argon with pressure of 1 bar and fast cooling to 80 DEG C, and discharging. According to the invention, not only the brazing gap affected by brazing gap oxidization and part deformation can be avoided, but also the corner radium of the brazing is effectively ensured to be not more than R0.5mm and the size of a weldment is ensured to meet the demand of a design drawing. Meanwhile, the stable brazing quality is obtained, the trimming of brazing joint corner is reduced or avoided, the cost is reduced, and the working efficiency is improved.
Description
Technical field:
The present invention relates to the Vacuum Soldering Technology field, a kind of method for welding of multiple flow passages spout is provided especially.
Background technology:
In the prior art, the multiple flow passages spout is the internal layer spout of the large-scale nozzle of combustion machine, is comprised of vortice and end cap with 12 wheel blades, and the wheel blade of vortice adopts soldering to be connected with end cap by designing requirement.The original method for welding of this spout be single part by the design drawing dimensioned, do not consider the change direction of joint clearance of brazing, gap; Measure the size of end cap and vortice bottom when vortice and end cap combination assembling with height gauge, after being of the required size, position with argon arc welding; Be coated with an amount of paste solder at the place to be welded of assembly wheel blade and end cap periphery before the soldering, carry out at last vacuum brazing.Make the spout qualification rate of in this way soldering lower, below 50%.Its main cause is: the argon arc tack welding causes the solder joint selective oxidation, solder can not wetting matrix and capillary fill the gap; The argon arc tack welding changes the size positions between the component parts, causes the weldment size not meet designing requirement; 12 interior soldering radiuss of corner of runner exceed R0.5mm and the solder packing phenomenon are arranged.This shows, this kind method for welding fully welding of multiple flow passages spout needs, and haves much room for improvement.
Therefore, people expect to obtain the method for welding of the good multiple flow passages spout of a kind of technique effect.
Summary of the invention:
The method for welding that the purpose of this invention is to provide the good multiple flow passages spout of a kind of technique effect.
The invention provides a kind of method for welding of multiple flow passages spout, it is characterized in that: the part materials of described multiple flow passages spout are nickel base superalloy; The method for welding of described multiple flow passages spout satisfies following requirement:
At first, with described multiple flow passages spout combination assembling, following requirement is satisfied in the wedge shape joint clearance of brazing between end cap and 12 wheel blades: the lower end is 0mm, and the upper end is 0.03-0.15mm; Adopt energy storage spot welding to fix in order to carry out assembling and positioning between each part of described multiple flow passages spout;
Use paste AMDRY-915 solder to be coated on the welded assembly before the soldering, the diameter that presets paste AMDRY-915 solder before the described weldering is Φ 2.0-3.0mm; Described paste AMDRY-915 solder makes take powdery AMDRY-915 solder, soldering binding agent as raw material, and the percentage by weight of its composition and each component requires as follows: powdery AMDRY-915 solder: 6%-8%, soldering binding agent: surplus;
The method for welding of described multiple flow passages spout is specially vacuum brazing, and demand of technical standard is: vacuum pressure is lower than 4 * 10
-2Under the condition of Pa, the beginning heat temperature raising; Speed with 5-10 ℃/min rises to 550 ± 10 ℃, insulation 20-25min; Speed with 5-10 ℃/min rises to 920 ± 10 ℃, insulation 15-20min; Speed with 5-10 ℃/min rises to 1150 ± 10 ℃, insulation 15-20min; Then cooling, stove is chilled to 900 ℃, insulation 20-30min; Charged pressure is that 1bar purity is not less than 99.995% high-purity argon gas subsequently; And the startup blower fan cools off fast; When being lower than 80 ℃, temperature comes out of the stove.
In the method for welding of described multiple flow passages spout, require to carry out preweld cleaning: part is at first carried out pickling, remove surface film oxide; Use the acetone cleaning components before the assembling.
In the method for welding of described multiple flow passages spout, when vacuum brazing, satisfy following assembling and positioning and require:
Vortice and end cap are assembled in the anchor clamps combination, compress end cap by three pressure heads on the pressing plate, with material GH600, thickness 0.5mm, length 10mm, specification is that the two ends of three right angle ribs of 3.0mm * 3.0mm place respectively on vortice and the end cap, three right angle ribs all stagger with brazed seam and become hexagonal angle to arrange, then be welded on the part with the two-end-point of energy storage spot welding with the right angle rib, realize fixing between the part; Energy storage spot welding voltage is: 120-150V.
In the method for welding of described multiple flow passages spout, satisfy following requirement when vacuum brazing: be placed in the vacuum drying oven soldered assembly stably that pallet carries out vacuum brazing, the completely following requirement of Xu of vacuum brazing technique standard: vacuum pressure is lower than 4 * 10
-2Under the condition of Pa, the beginning heat temperature raising; Speed with 8 ℃/min rises to 550 ℃, insulation 22min; Speed with 10 ℃/min rises to 920 ℃, insulation 18min; Speed with 5 ℃/min rises to 1150 ℃, insulation 18min; Then cooling, stove is chilled to 900 ℃, insulation 25min; Charged pressure is that 1bar and purity are not less than 99.995% high-purity argon gas and start blower fan and cools off fast subsequently; When being lower than 80 ℃, come out of the stove.
In the method for welding of described multiple flow passages spout, carry out the postwelding cleaning after vacuum brazing: the right angle rib polishing of after the soldering retaining element on the spout being used is removed.
Spout after the soldering is through quality examination and dimensional gaughing, and the result shows: wheel blade soldering place edge solder is continuous, smooth, and the soldering radius of corner is not more than R0.5mm, need not it is repaired the size conforms design drawing requirement of weldment.
In terms of existing technologies, the invention provides a kind of easy, practical multiple flow passages spout method for welding.The method can avoid solder joint oxidation and part to deform affects the joint clearance of brazing, can guarantee effectively that again the soldering radius of corner is not more than the size conforms design drawing requirement of R0.5mm and weldment.Obtain simultaneously stable brazing quality, reduce or avoid the finishing of soldered fitting fillet, reduce cost, increase work efficiency.
Description of drawings:
Fig. 1 is multiple flow passages spout structure principle schematic;
Fig. 2 is the M-M longitudinal sectional view of Fig. 1;
Fig. 3 is by means of the multiple flow passages spout overall structure principle schematic behind the Fixture assembly location;
Fig. 4 is multiple flow passages spout preseting solder schematic diagram.
The specific embodiment:
The Reference numeral implication is as follows:
The wheel blade 1 of turbine device, end cap 2, soldering fillet 3, whirlpool device 4, wheel blade upper end 5, wheel blade lower end 6, faying face 7, clamp base 8, right angle rib 9, anchor clamps pressing plate 10, clamp pressing bolt 11, upper end, place to be welded precognition paste solder place 12.
The method for welding of 1 one kinds of multiple flow passages spouts of embodiment
(1) preweld cleaning: part is at first carried out pickling, remove surface film oxide; Use the acetone cleaning components before the assembling.
(2) assembling and positioning weldering: shown in Figure of description 1, vortice and end cap are assembled in the anchor clamps combination, compress end cap by three pressure heads on the pressing plate, three right angle rib (material GH600 with 3.0 * 3.0(mm), thickness 0.5mm, length 10mm) two ends place respectively on vortice and the end cap, and three right angle ribs all stagger with brazed seam and become about hexagonal angle, then be welded on the part with the two-end-point of energy storage spot welding with the right angle rib, realize fixing between the part.Energy storage spot welding voltage is: 120-150V.
(3) paste solder preparation: the AMDRY-915 solder powder with 93% mixes with binding agent with 7% soldering and stirs into uniform paste, then paste solder is poured in the applicator.
(4) paste solder presets: shown in Figure of description 2, paste AMDRY-915 solder is preset at the upper end at vortice wheel blade and end cap place to be welded (12 place), the solder diameter is Φ 2.5mm.
(5) oven dry: the assembly that will apply solder is put into the drying baker oven dry, bake out temperature: 150 ℃, and temperature retention time: 2h.
(6) vacuum brazing: the assembly after will drying is placed in the vacuum drying oven and carries out vacuum brazing on the pallet stably.The vacuum brazing technique standard: vacuum pressure is lower than 4 * 10
-2Under the condition of Pa, the beginning heat temperature raising; Speed with 8 ℃/min rises to 550 ℃, insulation 22min; Speed with 10 ℃/min rises to 920 ℃, insulation 18min; Speed with 5 ℃/min rises to 1150 ℃, insulation 18min; Then cooling, stove is chilled to 900 ℃, insulation 25min; Charged pressure is the high-purity argon gas (purity is not less than 99.995%) of 1bar and starts blower fan and cool off fast subsequently; Being lower than 80 ℃ comes out of the stove.
(7) postwelding cleaning: the right angle rib polishing of after the soldering retaining element on the spout being used is removed.
(8) result: the spout after the soldering is through quality examination and dimensional gaughing, and the result shows: wheel blade soldering place edge solder is continuous, smooth, and the soldering radius of corner is not more than R0.5mm, need not it is repaired the size conforms design drawing requirement of weldment.
A kind of method for welding of multiple flow passages spout, the part materials of described multiple flow passages spout are nickel base superalloy; The method for welding of described multiple flow passages spout satisfies following requirement:
At first, with described multiple flow passages spout combination assembling, following requirement is satisfied in the wedge shape joint clearance of brazing between end cap and 12 wheel blades: the lower end is 0mm, and the upper end is 0.03-0.15mm; Adopt energy storage spot welding to fix in order to carry out assembling and positioning between each part of described multiple flow passages spout;
Use paste AMDRY-915 solder to be coated on the welded assembly before the soldering, the diameter that presets paste AMDRY-915 solder before the described weldering is Φ 2.0-3.0mm; Described paste AMDRY-915 solder makes take powdery AMDRY-915 solder, soldering binding agent as raw material, and the percentage by weight of its composition and each component requires as follows: powdery AMDRY-915 solder: 6%-8%, soldering binding agent: surplus;
The method for welding of described multiple flow passages spout is specially vacuum brazing, and demand of technical standard is: vacuum pressure is lower than 4 * 10
-2Under the condition of Pa, the beginning heat temperature raising; Speed with 5-10 ℃/min rises to 550 ± 10 ℃, insulation 20-25min; Speed with 5-10 ℃/min rises to 920 ± 10 ℃, insulation 15-20min; Speed with 5-10 ℃/min rises to 1150 ± 10 ℃, insulation 15-20min; Then cooling, stove is chilled to 900 ℃, insulation 20-30min; Charged pressure is that 1bar purity is not less than 99.995% high-purity argon gas subsequently; And the startup blower fan cools off fast; When being lower than 80 ℃, temperature comes out of the stove.
In the method for welding of described multiple flow passages spout, require to carry out preweld cleaning: part is at first carried out pickling, remove surface film oxide; Use the acetone cleaning components before the assembling.
In the method for welding of described multiple flow passages spout, when vacuum brazing, satisfy following assembling and positioning and require:
Vortice and end cap are assembled in the anchor clamps combination, compress end cap by three pressure heads on the pressing plate, with material GH600, thickness 0.5mm, length 10mm, specification is that the two ends of three right angle ribs of 3.0mm * 3.0mm place respectively on vortice and the end cap, three right angle ribs all stagger with brazed seam and become hexagonal angle to arrange, then be welded on the part with the two-end-point of energy storage spot welding with the right angle rib, realize fixing between the part; Energy storage spot welding voltage is: 120-150V.
In the method for welding of described multiple flow passages spout, satisfy following requirement when vacuum brazing: be placed in the vacuum drying oven soldered assembly stably that pallet carries out vacuum brazing, the completely following requirement of Xu of vacuum brazing technique standard: vacuum pressure is lower than 4 * 10
-2Under the condition of Pa, the beginning heat temperature raising; Speed with 8 ℃/min rises to 550 ℃, insulation 22min; Speed with 10 ℃/min rises to 920 ℃, insulation 18min; Speed with 5 ℃/min rises to 1150 ℃, insulation 18min; Then cooling, stove is chilled to 900 ℃, insulation 25min; Charged pressure is that 1bar and purity are not less than 99.995% high-purity argon gas and start blower fan and cools off fast subsequently; When being lower than 80 ℃, come out of the stove.
In the method for welding of described multiple flow passages spout, carry out the postwelding cleaning after vacuum brazing: the right angle rib polishing of after the soldering retaining element on the spout being used is removed.
Spout after the soldering is through quality examination and dimensional gaughing, and the result shows: wheel blade soldering place edge solder is continuous, smooth, and the soldering radius of corner is not more than R0.5mm, need not it is repaired the size conforms design drawing requirement of weldment.
In terms of existing technologies, the present embodiment provides a kind of easy, practical multiple flow passages spout method for welding.The method can avoid solder joint oxidation and part to deform affects the joint clearance of brazing, can guarantee effectively that again the soldering radius of corner is not more than the size conforms design drawing requirement of R0.5mm and weldment.Obtain simultaneously stable brazing quality, reduce or avoid the finishing of soldered fitting fillet, reduce cost, increase work efficiency.
Claims (5)
1. the method for welding of a multiple flow passages spout, it is characterized in that: the part materials of described multiple flow passages spout are nickel base superalloy; The method for welding of described multiple flow passages spout satisfies following requirement:
At first, with described multiple flow passages spout combination assembling, following requirement is satisfied in the wedge shape joint clearance of brazing between end cap and 12 wheel blades: the lower end is 0mm, and the upper end is 0.03-0.15mm; Adopt energy storage spot welding to fix in order to carry out assembling and positioning between each part of described multiple flow passages spout;
Use paste AMDRY-915 solder to be coated on the welded assembly before the soldering, the diameter that presets paste AMDRY-915 solder before the described weldering is Φ 2.0-3.0mm; Described paste AMDRY-915 solder makes take powdery AMDRY-915 solder, soldering binding agent as raw material, and the percentage by weight of its composition and each component requires as follows: powdery AMDRY-915 solder: 6%-8%, soldering binding agent: surplus;
The method for welding of described multiple flow passages spout is specially vacuum brazing, and demand of technical standard is: vacuum pressure is lower than 4 * 10
-2Under the condition of Pa, the beginning heat temperature raising; Speed with 5-10 ℃/min rises to 550 ± 10 ℃, insulation 20-25min; Speed with 5-10 ℃/min rises to 920 ± 10 ℃, insulation 15-20min; Speed with 5-10 ℃/min rises to 1150 ± 10 ℃, insulation 15-20min; Then cooling, stove is chilled to 900 ℃, insulation 20-30min; Charged pressure is that 1bar purity is not less than 99.995% high-purity argon gas subsequently; And the startup blower fan cools off fast; When being lower than 80 ℃, temperature comes out of the stove.
2. according to the method for welding of the described multiple flow passages spout of claim 1, it is characterized in that: in the method for welding of described multiple flow passages spout, require to carry out preweld cleaning: part is at first carried out pickling, remove surface film oxide; Use the acetone cleaning components before the assembling.
3. according to the method for welding of the described multiple flow passages spout of claim 2, it is characterized in that: in the method for welding of described multiple flow passages spout, when vacuum brazing, satisfy following assembling and positioning and require:
Vortice and end cap are assembled in the anchor clamps combination, compress end cap by three pressure heads on the pressing plate, with material GH600, thickness 0.5mm, length 10mm, specification is that the two ends of three right angle ribs of 3.0mm * 3.0mm place respectively on vortice and the end cap, three right angle ribs all stagger with brazed seam and become hexagonal angle to arrange, then be welded on the part with the two-end-point of energy storage spot welding with the right angle rib, realize fixing between the part; Energy storage spot welding voltage is: 120-150V.
4. according to the method for welding of the described multiple flow passages spout of claim 3, it is characterized in that: in the method for welding of described multiple flow passages spout, when vacuum brazing, satisfy following requirement:
Soldered assembly is placed in the vacuum drying oven carries out vacuum brazing on the pallet stably, the completely following requirement of Xu of vacuum brazing technique standard: vacuum pressure is lower than 4 * 10
-2Under the condition of Pa, the beginning heat temperature raising; Speed with 8 ℃/min rises to 550 ℃, insulation 22min; Speed with 10 ℃/min rises to 920 ℃, insulation 18min; Speed with 5 ℃/min rises to 1150 ℃, insulation 18min; Then cooling, stove is chilled to 900 ℃, insulation 25min; Charged pressure is that 1bar and purity are not less than 99.995% high-purity argon gas and start blower fan and cools off fast subsequently; When being lower than 80 ℃, come out of the stove.
5. according to the method for welding of the described multiple flow passages spout of claim 4, it is characterized in that: in the method for welding of described multiple flow passages spout, carry out the postwelding cleaning after vacuum brazing: the right angle rib polishing of after the soldering retaining element on the spout being used is removed.
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| CN103624353A (en) * | 2013-11-15 | 2014-03-12 | 沈阳黎明航空发动机(集团)有限责任公司 | Brazing method for DD5 single crystal alloy |
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| CN104249203A (en) * | 2013-06-26 | 2014-12-31 | 上海电气集团上海电机厂有限公司 | Motor rotor end ring and guide bar brazing method |
| CN104607745A (en) * | 2014-12-15 | 2015-05-13 | 贵州黎阳航空动力有限公司 | Swirler vacuum brazing method |
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| CN112338447A (en) * | 2020-10-23 | 2021-02-09 | 西安远航真空钎焊技术有限公司 | Machining method of wide-runner throat structural part |
| CN113664399A (en) * | 2021-08-16 | 2021-11-19 | 西安远航真空钎焊技术有限公司 | Machining method of K-shaped partition plate cavity |
| CN113664399B (en) * | 2021-08-16 | 2023-10-24 | 西安远航真空钎焊技术有限公司 | Processing method of K-shaped baffle cavity |
| CN115365595A (en) * | 2022-09-30 | 2022-11-22 | 成都和鸿科技股份有限公司 | Brazing method for duplex guide vane |
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Address after: 110000 Liaoning Province, Shenyang City District East Street No. 6 Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company Address before: 110043 Liaoning Province, Shenyang City District East Street No. 6 Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City |