CN104475909B - A kind of method for welding of burner inner liner head assembly - Google Patents

A kind of method for welding of burner inner liner head assembly Download PDF

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Publication number
CN104475909B
CN104475909B CN201410591614.1A CN201410591614A CN104475909B CN 104475909 B CN104475909 B CN 104475909B CN 201410591614 A CN201410591614 A CN 201410591614A CN 104475909 B CN104475909 B CN 104475909B
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China
Prior art keywords
solder
burner
head assembly
sleeve
swirler
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CN201410591614.1A
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Chinese (zh)
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CN104475909A (en
Inventor
孔庆吉
石竖鲲
李继超
杜静
曲伸
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沈阳黎明航空发动机(集团)有限责任公司
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Publication of CN104475909A publication Critical patent/CN104475909A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00Soldering, e.g. brazing, or unsoldering
    • B23K1/008Soldering within a furnace
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00Soldering, e.g. brazing, or unsoldering
    • B23K1/20Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00Soldering, e.g. brazing, or unsoldering
    • B23K1/20Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
    • B23K1/206Cleaning
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/42Continuous combustion chambers using liquid or gaseous fuel characterised by the arrangement or form of the flame tubes or combustion chambers

Abstract

A method for welding for burner inner liner head assembly, belongs to technical field of aircraft engine part manufacture.In the method for welding of traditional burner inner liner head assembly, because cylindrical shell leading portion and splash pan all adopt argon arc welding to position, cause the assembly matrix at tack weld place oxidized, during soldering, solder cannot soak the matrix at tack weld place, cause brazed seam discontinuous, the designing requirement of continuous brazed seam cannot be reached; After soldering, cold air hole can be blocked by solder, and the ratio of brazing area between sleeve and swirler does not reach the designing requirement of more than 80%.The present invention adopts percussion spot welding to position, and avoids the assembly matrix at tack weld place oxidized, and the matrix at the wettable tack weld place of paste solder, ensures the designing requirement of continuous brazed seam; Inside sleeve, place to be welded meets ratio of brazing area requirement by sticky brazing filler material, and brushing only solder flux in cold air hole, avoid solder blocking cold air hole in brazing process, the present invention also has the feature of workable and remarkable reduction production cost.

Description

A kind of method for welding of burner inner liner head assembly

Technical field

The invention belongs to technical field of aircraft engine part manufacture, particularly relate to a kind of method for welding of burner inner liner head assembly.

Background technology

Burner inner liner head assembly is as the important composition parts of aero-engine, its operating temperature is about 1000 DEG C, burner inner liner head assembly is made up of swirler, cylindrical shell leading portion, splash pan and sleeve, four are high-temperature alloy material, cylindrical shell leading portion, splash pan and sleeve divide three layers to be sleeved on successively on swirler, cylindrical shell leading portion, splash pan and soldering must be adopted between sleeve with swirler to be connected.

Traditional method for welding of burner inner liner head assembly is:

1. before soldering, first adopt argon arc welding cylindrical shell leading portion and swirler are positioned by design size, and inside cylindrical shell leading portion the preset appropriate paste solder (B-Ni82CrSiB) in place to be welded;

2. swirler end face is kept down, then splash pan is assembled on the design size position of swirler, inside splash pan, place to be welded utilizes argon arc welding to be positioned on swirler by splash pan again, last at place to be welded circumferentially preset appropriate paste solder (B-Ni82CrSiB), this solder is that splash pan is shared when soldering with sleeve;

3. sleeve is assembled on swirler, ensures that sleeve docks well with the boss of swirler;

4. keep swirler end face down, burner inner liner head assembly is sent in drying box and dries, then carry out soldering by the burner inner liner head assembly feeding vacuum drying oven after oven dry.

But adopt the method for welding of above-mentioned burner inner liner head assembly, there is the defect that cannot evade: because cylindrical shell leading portion and splash pan all adopt argon arc welding to position, the assembly matrix which results in tack weld place is oxidized, during soldering, solder cannot soak the matrix at tack weld place, thus cause brazed seam discontinuous, the designing requirement of continuous brazed seam cannot be reached; Because the cold air hole distance brazed seam of φ 0.5mm on cylindrical shell leading portion is comparatively near, after soldering, cold air hole can be blocked by solder; When after sleeve assembling, inside sleeve, place to be welded is blocked, therefore solder cannot be added, during soldering, inside sleeve, place to be welded can only rely on and to share with splash pan and the solder of being partial to splash pan welds, and this ratio of brazing area that directly results between sleeve and swirler does not reach the designing requirement of more than 80%.

Summary of the invention

For prior art Problems existing, the invention provides a kind of method for welding of burner inner liner head assembly, solve the assembly matrix problem of oxidation at tack weld place, effectively avoid cold air hole to be blocked by solder, the ratio of brazing area designing requirement between sleeve and swirler can be met.

To achieve these goals, the present invention adopts following technical scheme: a kind of method for welding of burner inner liner head assembly, comprises the steps:

Step one: pre-welding treatment, utilizes acetone soln to clean swirler, cylindrical shell leading portion, splash pan and sleeve, ensures that swirler, cylindrical shell leading portion, splash pan and sleeve surface are without grease and other impurity;

Step 2: the solder preparing two types, comprises paste solder and sticky brazing filler material;

Step 3: assembling and positioning is carried out to cylindrical shell leading portion, first cylindrical shell leading portion and swirler are assembled according to design size, fit clearance during assembling is not more than 0.1mm, then percussion spot welding is utilized to be fixed on swirler by cylindrical shell leading portion, percussion spot welding solder joint is positioned at the straight mouth place of cylindrical shell leading portion and along the circumferential direction goes up, and solder joint is along the circumferential direction uniform;

After cylindrical shell leading portion completes percussion spot welding location, the end face of swirler is placed down, first dry, send into again in vacuum drying oven and carry out soldering, until soldering complete after taking-up, then utilize applicator paste solder to be along the circumferential direction applied to place to be welded inside cylindrical shell leading portion, paste solder consumption is determined by gap to be welded;

Step 4: splash pan is assembled according to design size, fit clearance during assembling is not more than 0.1mm, then utilizes percussion spot welding to be fixed on swirler by splash pan, and percussion spot welding solder joint is positioned at place to be welded inside splash pan, and solder joint is along the circumferential direction uniform;

After splash pan completes percussion spot welding location, utilize applicator paste solder to be along the circumferential direction applied to place to be welded inside splash pan, paste solder consumption is determined by gap to be welded;

Step 5: before carrying out sleeve assembling, first measure the rigging position diameter of sleeve and swirler, and calculate both fit clearances, maximum fit clearance is not more than 0.1mm; Then sticky brazing filler material is along the circumferential direction pasted onto on the joint to be welded of sleeve, sticky brazing filler material location for paste is apart from the size distance of sleeve end surface to be welded, equal the degree of depth that sleeve joint to be welded inserts swirler, finally clear up the redundant brazing filler metal at the end to end place of sticky brazing filler material, now sleeve and swirler are assembled, ensure that sleeve end surface to be welded contacts with the boss in swirler hole, now burner inner liner head assembly has assembled;

Step 6: dip only solder flux with banister brush, and be coated in the cold air hole of cylindrical shell leading portion uniformly by stopping solder flux;

Step 7: sent in drying box by the burner inner liner head assembly completing assembling and dry, bake out temperature is 140 ± 10 DEG C, and temperature retention time is 1.5 ~ 2 hours;

Step 8: the burner inner liner head assembly of having dried is sent in vacuum drying oven and carries out soldering, brazing temperature is 1180 ± 10 DEG C, temperature retention time is 5 ~ 10 minutes, after the temperature retention time of burner inner liner head assembly terminates, be cooled to less than 100 DEG C can come out of the stove, burner inner liner head assembly intensification, insulation and with in stove cooling procedure, the Vacuum Pressure in vacuum drying oven is all not more than 0.1Pa;

Step 9: the burner inner liner head assembly after soldering being completed is placed in clear water, soak after 10 ~ 15 minutes, the only solder flux before cylindrical shell in section surface and cold air hole is cleaned out again with hairbrush, finally dry up burner inner liner head assembly with compressed air, now the brazing operation of burner inner liner head assembly all completes.

Described paste solder is self-control solder, paste solder is formed by Powdered BNi-5 solder and binding agent hybrid modulation, and wherein, the percentage by weight of Powdered BNi-5 solder is 90% ~ 92%, the percentage by weight of binding agent is 8% ~ 10%, and paste solder is filling in applicator.

Described sticky brazing filler material is BNi-5 finished product sticky brazing filler material, and sticky brazing filler material thickness is 0.5mm, and sticky brazing filler material length is equal for being cropped to place to be welded with sleeve circumferential length, and sticky brazing filler material width is needed solder total amount to determine by sleeve joint to be welded.

Described only solder flux is titanium dioxide emulsion, and titanium dioxide emulsion mixes by adding 500 ~ 600g titania powder in 1L water.

Beneficial effect of the present invention:

The present invention is compared with the method for welding of traditional burner inner liner head assembly, and adopt percussion spot welding to position, the assembly matrix avoiding tack weld place is oxidized, and the matrix at the wettable tack weld place of paste solder, ensure that the designing requirement of continuous brazed seam; Inside sleeve, place to be welded meets ratio of brazing area requirement by sticky brazing filler material, and brushing only solder flux in cold air hole, avoid solder blocking cold air hole in brazing process.The present invention also have workable, assembly soldering qualification rate is high and the feature of remarkable reduction production cost.

Accompanying drawing explanation

Fig. 1 is a kind of burner inner liner headset structure schematic diagram;

Fig. 2 is I portion enlarged drawing in Fig. 1;

Fig. 3 is the tube-in-tube structure schematic diagram having pasted sticky brazing filler material;

In figure, 1-swirler, 2-cylindrical shell leading portion, 3-splash pan, 4-sleeve, 5-cold air hole, 6-sticky brazing filler material, 7-paste solder, 8-swirler end face.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.

Embodiment one

The swirler of burner inner liner head assembly, cylindrical shell leading portion and sleeve are the nickel base superalloy of GH3536, splash pan is the nickel base superalloy of GH5188, cylindrical shell leading portion, splash pan, the axis at sleeve and swirler place to be welded overlaps fitted position and is respectively 3.0mm, 3.5mm, 4.0mm, cylindrical shell leading portion, splash pan, the theoretical diameter size that sleeve is positioned at swirler place to be welded is respectively φ 45mm, φ 30mm, φ 22mm, technique test specimen is all had in the burner inner liner head assembly of every soldering batch, and together carry out soldering processing with the burner inner liner head assembly as part, and technique test specimen is used for last quality inspection use.

The vacuum drying oven model used in brazing process is VBFV-160, and equipment operating temperature is 550 ~ 1300 DEG C, and temperature homogeneity is ± 5 DEG C, and its end vacuum pressure is 0.001Pa.

The method for welding of described above-mentioned burner inner liner head assembly, comprises the steps:

Step one: pre-welding treatment, utilizes acetone soln to clean swirler, cylindrical shell leading portion, splash pan and sleeve, ensures that swirler, cylindrical shell leading portion, splash pan and sleeve surface are without grease and other impurity;

Step 2: the solder preparing two types, comprises paste solder and sticky brazing filler material;

Described paste solder is self-control solder, and paste solder is formed by Powdered BNi-5 solder and binding agent hybrid modulation, and wherein, the percentage by weight of Powdered BNi-5 solder is 90%, and the percentage by weight of binding agent is 10%, and paste solder is filling in applicator;

Described sticky brazing filler material is BNi-5 finished product sticky brazing filler material, and sticky brazing filler material thickness is 0.5mm, and sticky brazing filler material length is 70mm, and sticky brazing filler material width is 3.6mm;

Step 3: assembling and positioning is carried out to cylindrical shell leading portion, first cylindrical shell leading portion and swirler are assembled according to design size, fit clearance during assembling is not more than 0.1mm, then percussion spot welding is utilized to be fixed on swirler by cylindrical shell leading portion, percussion spot welding solder joint is positioned at the straight mouth place of cylindrical shell leading portion and along the circumferential direction goes up, number of welds is 12, and along the circumferential direction uniform, and percussion spot welding voltage is 180V ~ 220V;

After cylindrical shell leading portion completes percussion spot welding location, the end face of swirler is placed down, first dry, send into again in vacuum drying oven and carry out soldering, until soldering complete after taking-up, then utilize applicator paste solder to be along the circumferential direction applied to place to be welded inside cylindrical shell leading portion, paste solder diameter is about φ 1.2mm;

Step 4: splash pan is assembled according to design size, fit clearance during assembling is not more than 0.1mm, then percussion spot welding is utilized to be fixed on swirler by splash pan, percussion spot welding solder joint is positioned at place to be welded inside splash pan, number of welds is 8, and along the circumferential direction uniform, percussion spot welding voltage is 180V ~ 220V;

After splash pan completes percussion spot welding location, utilize applicator paste solder to be along the circumferential direction applied to place to be welded inside splash pan, paste solder diameter is about φ 1.6mm;

Step 5: before carrying out sleeve assembling, first measure the rigging position diameter of sleeve and swirler, and calculate both fit clearances, maximum fit clearance is not more than 0.1mm; Then sticky brazing filler material is along the circumferential direction pasted onto on the joint to be welded of sleeve, sticky brazing filler material location for paste is 4.5mm apart from the size distance of sleeve end surface to be welded, namely sleeve joint to be welded inserts the degree of depth of swirler is 4.5mm, finally clear up the redundant brazing filler metal at the end to end place of sticky brazing filler material, now sleeve and swirler are assembled, ensure that sleeve end surface to be welded contacts with the boss in swirler hole, now burner inner liner head assembly has assembled;

Step 6: dip only solder flux with banister brush, and be coated in the cold air hole of φ 0.5mm on cylindrical shell leading portion uniformly by stopping solder flux; Wherein, only solder flux is titanium dioxide emulsion, and titanium dioxide emulsion mixes by adding 500 ~ 600g titania powder in 1L water;

Step 7: sent in drying box by the burner inner liner head assembly completing assembling and dry, bake out temperature is 150 DEG C, and temperature retention time is 2 hours;

Step 8: the burner inner liner head assembly of having dried is sent in vacuum drying oven and carries out soldering, brazing temperature is 1170 DEG C, temperature retention time is 10 minutes, after the temperature retention time of burner inner liner head assembly terminates, be cooled to less than 100 DEG C can come out of the stove, burner inner liner head assembly intensification, insulation and with in stove cooling procedure, the Vacuum Pressure in vacuum drying oven is all not more than 0.1Pa;

Step 9: the burner inner liner head assembly after soldering being completed is placed in clear water, soak after 10 minutes, the only solder flux before cylindrical shell in section surface and φ 0.5mm cold air hole is cleaned out again with hairbrush, finally dry up burner inner liner head assembly with compressed air, now the brazing operation of burner inner liner head assembly all completes.

By the technique test specimen censorship of same soldering batch, carry out axial and radial cutting metallographic examination to technique test specimen, censorship is qualified can dispatch from the factory afterwards with a batch burner inner liner head assembly.

Embodiment two

The swirler of burner inner liner head assembly, cylindrical shell leading portion and sleeve are the nickel base superalloy of GH3536, splash pan is the nickel base superalloy of GH5188, cylindrical shell leading portion, splash pan, the axis at sleeve and swirler place to be welded overlaps fitted position and is respectively 3.5mm, 4.5mm, 6mm, cylindrical shell leading portion, splash pan, the theoretical diameter size that sleeve is positioned at swirler place to be welded is respectively φ 50mm, φ 35mm, φ 25mm, technique test specimen is all had in the burner inner liner head assembly of every soldering batch, and together carry out soldering processing with the burner inner liner head assembly as part, and technique test specimen is used for last quality inspection use.

The vacuum drying oven model used in brazing process is VBFV-160, and equipment operating temperature is 550 ~ 1300 DEG C, and temperature homogeneity is ± 5 DEG C, and its end vacuum pressure is 0.001Pa.

The method for welding of described above-mentioned burner inner liner head assembly, comprises the steps:

Step one: pre-welding treatment, utilizes acetone soln to clean swirler, cylindrical shell leading portion, splash pan and sleeve, ensures that swirler, cylindrical shell leading portion, splash pan and sleeve surface are without grease and other impurity;

Step 2: the solder preparing two types, comprises paste solder and sticky brazing filler material;

Described paste solder is self-control solder, and paste solder is formed by Powdered BNi-5 solder and binding agent hybrid modulation, and wherein, the percentage by weight of Powdered BNi-5 solder is 92%, and the percentage by weight of binding agent is 8%, and paste solder is filling in applicator;

Described sticky brazing filler material is BNi-5 finished product sticky brazing filler material, and sticky brazing filler material thickness is 0.5mm, and sticky brazing filler material length is 80mm, and sticky brazing filler material width is 4.8mm;

Step 3: assembling and positioning is carried out to cylindrical shell leading portion, first cylindrical shell leading portion and swirler are assembled according to design size, fit clearance during assembling is not more than 0.1mm, then percussion spot welding is utilized to be fixed on swirler by cylindrical shell leading portion, percussion spot welding solder joint is positioned at the straight mouth place of cylindrical shell leading portion and along the circumferential direction goes up, number of welds is 12, and along the circumferential direction uniform, and percussion spot welding voltage is 180V ~ 220V;

After cylindrical shell leading portion completes percussion spot welding location, the end face of swirler is placed down, first dry, send into again in vacuum drying oven and carry out soldering, until soldering complete after taking-up, then utilize applicator paste solder to be along the circumferential direction applied to place to be welded inside cylindrical shell leading portion, paste solder diameter is about φ 2mm;

Step 4: splash pan is assembled according to design size, fit clearance during assembling is not more than 0.1mm, then percussion spot welding is utilized to be fixed on swirler by splash pan, percussion spot welding solder joint is positioned at place to be welded inside splash pan, number of welds is 8, and along the circumferential direction uniform, percussion spot welding voltage is 180V ~ 220V;

After splash pan completes percussion spot welding location, utilize applicator paste solder to be along the circumferential direction applied to place to be welded inside splash pan, paste solder diameter is about φ 1.6mm;

Step 5: before carrying out sleeve assembling, first measure the rigging position diameter of sleeve and swirler, and calculate both fit clearances, maximum fit clearance is not more than 0.1mm; Then sticky brazing filler material is along the circumferential direction pasted onto on the joint to be welded of sleeve, sticky brazing filler material location for paste is 6mm apart from the size distance of sleeve end surface to be welded, namely sleeve joint to be welded inserts the degree of depth of swirler is 4.5mm, finally clear up the redundant brazing filler metal at the end to end place of sticky brazing filler material, now sleeve and swirler are assembled, ensure that sleeve end surface to be welded contacts with the boss in swirler hole, now burner inner liner head assembly has assembled;

Step 6: dip only solder flux with banister brush, and be coated in the cold air hole of φ 0.5mm on cylindrical shell leading portion uniformly by stopping solder flux; Wherein, only solder flux is titanium dioxide emulsion, and titanium dioxide emulsion mixes by adding 500 ~ 600g titania powder in 1L water;

Step 7: sent in drying box by the burner inner liner head assembly completing assembling and dry, bake out temperature is 150 DEG C, and temperature retention time is 2 hours;

Step 8: the burner inner liner head assembly of having dried is sent in vacuum drying oven and carries out soldering, brazing temperature is 1190 DEG C, temperature retention time is 5 minutes, after the temperature retention time of burner inner liner head assembly terminates, be cooled to less than 100 DEG C can come out of the stove, burner inner liner head assembly intensification, insulation and with in stove cooling procedure, the Vacuum Pressure in vacuum drying oven is all not more than 0.1Pa;

Step 9: the burner inner liner head assembly after soldering being completed is placed in clear water, soak after 15 minutes, the only solder flux before cylindrical shell in section surface and φ 0.5mm cold air hole is cleaned out again with hairbrush, finally dry up burner inner liner head assembly with compressed air, now the brazing operation of burner inner liner head assembly all completes.

By the technique test specimen censorship of same soldering batch, carry out axial and radial cutting metallographic examination to technique test specimen, censorship is qualified can dispatch from the factory afterwards with a batch burner inner liner head assembly.

Scheme in embodiment is also not used to limit scope of patent protection of the present invention, and the equivalence that all the present invention of disengaging do is implemented or changed, and is all contained in the scope of the claims of this case.

Claims (4)

1. a method for welding for burner inner liner head assembly, is characterized in that: comprise the steps:
Step one: pre-welding treatment, utilizes acetone soln to clean swirler, cylindrical shell leading portion, splash pan and sleeve, ensures that swirler, cylindrical shell leading portion, splash pan and sleeve surface are without grease and other impurity;
Step 2: the solder preparing two types, comprises paste solder and sticky brazing filler material;
Step 3: assembling and positioning is carried out to cylindrical shell leading portion, first cylindrical shell leading portion and swirler are assembled according to design size, fit clearance during assembling is not more than 0.1mm, then percussion spot welding is utilized to be fixed on swirler by cylindrical shell leading portion, percussion spot welding solder joint is positioned at the straight mouth place of cylindrical shell leading portion and along the circumferential direction goes up, and solder joint is along the circumferential direction uniform;
After cylindrical shell leading portion completes percussion spot welding location, the end face of swirler is placed down, first dry, send into again in vacuum drying oven and carry out soldering, until soldering complete after taking-up, then utilize applicator paste solder to be along the circumferential direction applied to place to be welded inside cylindrical shell leading portion, paste solder consumption is determined by gap to be welded;
Step 4: splash pan is assembled according to design size, fit clearance during assembling is not more than 0.1mm, then utilizes percussion spot welding to be fixed on swirler by splash pan, and percussion spot welding solder joint is positioned at place to be welded inside splash pan, and solder joint is along the circumferential direction uniform;
After splash pan completes percussion spot welding location, utilize applicator paste solder to be along the circumferential direction applied to place to be welded inside splash pan, paste solder consumption is determined by gap to be welded;
Step 5: before carrying out sleeve assembling, first measure the rigging position diameter of sleeve and swirler, and calculate both fit clearances, maximum fit clearance is not more than 0.1mm; Then sticky brazing filler material is along the circumferential direction pasted onto on the joint to be welded of sleeve, sticky brazing filler material location for paste equals apart from the size distance of sleeve end surface to be welded the degree of depth that sleeve joint to be welded inserts swirler, finally clear up the redundant brazing filler metal at the end to end place of sticky brazing filler material, now sleeve and swirler are assembled, ensure that sleeve end surface to be welded contacts with the boss in swirler hole, now burner inner liner head assembly has assembled;
Step 6: dip only solder flux with banister brush, and be coated in the cold air hole of cylindrical shell leading portion uniformly by stopping solder flux;
Step 7: sent in drying box by the burner inner liner head assembly completing assembling and dry, bake out temperature is 140 ± 10 DEG C, and temperature retention time is 1.5 ~ 2 hours;
Step 8: the burner inner liner head assembly of having dried is sent in vacuum drying oven and carries out soldering, brazing temperature is 1180 ± 10 DEG C, temperature retention time is 5 ~ 10 minutes, after the temperature retention time of burner inner liner head assembly terminates, be cooled to less than 100 DEG C can come out of the stove, burner inner liner head assembly intensification, insulation and with in stove cooling procedure, the Vacuum Pressure in vacuum drying oven is all not more than 0.1Pa;
Step 9: the burner inner liner head assembly after soldering being completed is placed in clear water, soak after 10 ~ 15 minutes, the only solder flux before cylindrical shell in section surface and cold air hole is cleaned out again with hairbrush, finally dry up burner inner liner head assembly with compressed air, now the brazing operation of burner inner liner head assembly all completes.
2. the method for welding of a kind of burner inner liner head assembly according to claim 1, it is characterized in that: described paste solder is self-control solder, paste solder is formed by Powdered BNi-5 solder and binding agent hybrid modulation, wherein, the percentage by weight of Powdered BNi-5 solder is 90% ~ 92%, the percentage by weight of binding agent is 8% ~ 10%, and paste solder is filling in applicator.
3. the method for welding of a kind of burner inner liner head assembly according to claim 1, it is characterized in that: described sticky brazing filler material is BNi-5 finished product sticky brazing filler material, sticky brazing filler material thickness is 0.5mm, sticky brazing filler material length is equal for being cropped to place to be welded with sleeve circumferential length, and sticky brazing filler material width is needed solder total amount to determine by sleeve joint to be welded.
4. the method for welding of a kind of burner inner liner head assembly according to claim 1, is characterized in that: described only solder flux is titanium dioxide emulsion, and titanium dioxide emulsion mixes by adding 500 ~ 600g titania powder in 1L water.
CN201410591614.1A 2014-10-28 2014-10-28 A kind of method for welding of burner inner liner head assembly CN104475909B (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63299857A (en) * 1987-05-30 1988-12-07 Aiwa Co Ltd Convective type vapor phase soldering device
JPH1098263A (en) * 1996-09-20 1998-04-14 Sony Corp Soldering apparatus and method therefor
CN102649187A (en) * 2012-05-22 2012-08-29 哈尔滨汽轮机厂有限责任公司 Vacuum brazing method of gas burner of combustion chamber of gas turbine
CN103481039A (en) * 2013-09-29 2014-01-01 北京动力机械研究所 Method for producing aviation gas turbine engine combustion chamber burner inner liner
CN103551692A (en) * 2013-10-18 2014-02-05 沈阳黎明航空发动机(集团)有限责任公司 Pipe end brazing method of elongated embedded sleeve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63299857A (en) * 1987-05-30 1988-12-07 Aiwa Co Ltd Convective type vapor phase soldering device
JPH1098263A (en) * 1996-09-20 1998-04-14 Sony Corp Soldering apparatus and method therefor
CN102649187A (en) * 2012-05-22 2012-08-29 哈尔滨汽轮机厂有限责任公司 Vacuum brazing method of gas burner of combustion chamber of gas turbine
CN103481039A (en) * 2013-09-29 2014-01-01 北京动力机械研究所 Method for producing aviation gas turbine engine combustion chamber burner inner liner
CN103551692A (en) * 2013-10-18 2014-02-05 沈阳黎明航空发动机(集团)有限责任公司 Pipe end brazing method of elongated embedded sleeve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
火焰筒后段通道组件真空钎焊;周蓉琴;《电焊机》;20070320;第37卷(第3期);第41-45页 *

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