CN103862146B - Gas turbine burner inner barrel manufacture method and frock - Google Patents
Gas turbine burner inner barrel manufacture method and frock Download PDFInfo
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- CN103862146B CN103862146B CN201410113754.8A CN201410113754A CN103862146B CN 103862146 B CN103862146 B CN 103862146B CN 201410113754 A CN201410113754 A CN 201410113754A CN 103862146 B CN103862146 B CN 103862146B
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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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
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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
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
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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
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
-
- 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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The present invention discloses a kind of gas turbine burner inner barrel manufacture method and welding tooling thereof, be characterized in, N-2-1 positioning mode and symmetrical segmentation wandering sequence is realized by frock, can by the weld industry of the thin-wall barrel of gas turbine burner inner core and so within 1mm.
Description
Technical field
The present invention relates to turbine making method, be specifically related to a kind of gas turbine burner inner barrel manufacture method and frock.
Background technology
The gas turbine of China's independent development, its burner adopts special construction design, there is a thin-wall barrel inside, the wall thickness δ 1.5 ~ 6mm of this thin-wall barrel, internal diameter Φ 300 ~ 600mm, tube length 400 ~ 800mm, material is nickel-base alloy, during manufacture, first with veneer reeling machine, nickel-base alloy sheet material is twisted into tubular, there is a longitudinal butt weld, then this weld seam is welded.In manufacture process, there is following critical technological point:
1, because thin-wall barrel welding deformation has complexity, diversity, some material is at high temperature very easily oxidized in addition, and a kind of rigidity welding equipment frock with the protection of back of the body argon need be relied on to control its distortion.In the past; the welding of this type of thin-wall part adopts key air-actuated jaw; it is unfavorable for controlling welding deformation to the Set and Positioning mode of cylindrical shell; and fixture rigidity deficiency has amount of deflection and distortion after causing cylindrical shell clamping; can welding deformation be aggravated, be difficult to reach designing requirement, then have; this fixture back of the body argon protection difficulty, manufacturing cost is high.
2, due to the inherent characteristic of nickel-base alloy, its weldability is very poor, and in weld seam, solder metal is not easy moistening expansion, poor fluidity, and welding procedure difficulty is large.
Above difficulty causes this cylindrical shell qualification rate low, and manufacturing cost is high.
Summary of the invention
For above-mentioned prior art Problems existing, the object of the present invention is to provide a kind of gas turbine burner inner barrel manufacture method and frock, effectively can overcome the difficulty in manufacture, improve product percent of pass, shorten the manufacturing cycle, reduce manufacturing cost.
Technical scheme of the present invention is:
A kind of gas turbine burner inner barrel manufacture method, this cylinder material is nickel-base alloy, wall thickness δ 1.5 ~ 6mm, internal diameter Φ 300 ~ 600mm, tube length 400 ~ 800mm, and manufacturing step is as follows:
1), by driven dimension blanking nickel-base alloy plate, butt joint edge cuts out bevel for welding;
2), upper veneer reeling machine is rolled into flat drum shape, and its cross section profile is long hole shape, and barrel is surrounded by pair of planar plate and a pair semi arch curved slab, and butt weld is positioned on the longitudinal midline of one piece of surface plate, and bevel for welding is outside;
3), this butt weld is welded as follows:
A. based on N-2-1 positioning principle, by frock, at least 3 anchor points are set in cylindrical shell normal direction, 2 anchor points are tangentially set at cylindrical shell, in drum shaft to arranging 1 anchor point, by these anchor points, cylindrical shell are fixed;
B. symmetrical segmentation wandering sequence is adopted, weld seam is divided into several sections, optimal segmentation quantity and the welding sequence of weld seam is found out by welding finite element analysis software SYSWELD, first one by one segmented node is compressed by spot welding number of fragments and welding sequence, impose spot welding, until be soldered all segmented node; Each welding section is welded one by one, until be soldered whole piece butt weld again by segmentation weldering number of fragments and welding sequence;
4), polishing welding seams, the inside and outside cylinder of itself and cylindrical shell is flushed;
5), upper spheronizator is round as a ball, eliminates the distortion of all directions;
6), solution heat treatment, improve cylindrical shell plasticity;
7), use hydraulic press orthopedic, its ovality is met the requirements.
In step 3), clear up within the scope of butt welded seam groove surfaces externally and internally 50mm before welding, adopt sanding machine polishing to remove oxide-film until expose metallic luster, then clean with acetone, the harmful substances such as wipe oil, burr, oxide skin.
In step 3), described segmentation weldering adopts the method for single face welding and double face shaping, and point multilayer welding, at least two-layer, interlayer temperature is no more than 90 DEG C.
Described bevel for welding angle 15 ° ~ 45 °, bottom gap 0.7 ~ 2mm.
For the frock of said method, comprise by the top board parts set gradually from top to bottom, back of the body argon plate member, bracket component;
Described top board parts comprise pressing plate and the red copper backing plate thereof of arranged superposed, on pressing plate occupies, plate face has the welding gun groove of vertical through pressing plate and red copper backing plate thereof, row's tapped through hole is respectively equipped with in welding gun groove both sides, holding screw is furnished with in hole, two row's tapped through holes are arranged symmetrically with relative to welding gun groove, often arrange holding screw quantity at least three, as cylindrical shell normal direction anchor point; Be provided with two technique lugs in the side of welding gun groove, be fixed on pressing plate, this technique lug withstands cylinder body outer wall, as the tangential anchor point of cylindrical shell;
Described back of the body argon plate member comprises back of the body argon plate and the red copper backing plate thereof of arranged superposed, on red copper backing plate occupies, the end face of red copper backing plate is as the positioning reference plane of clamping cylindrical shell, a limited step is provided with at the tail end of red copper backing plate, for withstanding one end of cylindrical shell, as drum shaft to anchor point, this anchor point and above-mentioned normal direction, tangential anchor point realize N-2-1 positioning principle jointly; Have groove at the end face of back of the body argon plate along its center line, this groove and red copper backing plate surround to form carries on the back argon chamber; In red copper backing plate center line both sides, have two row's apertures, be arranged symmetrically with relative to center line, enter the passage of weld seam as argon gas; Be respectively equipped with connecting bolt in four bights of back of the body argon plate, its stud runs through red copper backing plate, top board parts, fastening nut, top board parts and back of the body argon plate member can be fixed.
The row-to-row distance of described two row's apertures is slightly less than weld seam bottom width, often arranges aperture and is longitudinally being uniformly distributed, and two row's apertures, in opposite directions in zigzag interlaced arrangement, make argon gas evenly enter weld seam both sides;
On pressing plate plate face outside welding gun groove two ends, be carved with center line markings a respectively, these center line markings a overlaps with the center line of welding gun groove; On backing plate plate face outside welding gun groove two ends, be carved with center line markings b respectively, these center line markings b is corresponding with center line markings a; Copper plate is carved with center line markings c, and after cylindrical shell is fixing, center line markings a, b, c projection in the vertical direction overlaps;
Described welding gun groove is the surface groove of " V " tee section, inclination angle of inclined plane 45 °;
Described tapped through hole is screw-threaded counterbore, and correspondingly, holding screw is hexagon socket countersunk flat cap head screw.
Described bracket component comprises support, assembly pulley, hinge; Described support is made up of a rectangle underframe and a pair trapezoidal frame assembly welding, the end face of two frames is as the datum level installing pressing plate component, back of the body argon plate member, the end face of a frame is provided with hinge, the tail end of described back of the body argon plate member by hinge and frame hinged; The end face of another frame is provided with assembly pulley, this assembly pulley has top sheave and the lower sheave of arranged superposed, wherein, lower sheave is fixed on the end face of frame, top sheave is connected with the head end of argon plate member, does not connect mutually between upper and lower pulley, makes the head end of back of the body argon plate member become free end, can be elevated, with support opening and closing.
The effective depth of described assembly pulley, hinge is identical, and the end face making cylindrical shell positioning reference plane namely carry on the back the red copper backing plate of argon plate is in level.
The invention has the beneficial effects as follows:
1, the present invention adopts N-2-1 positioning mode and symmetrical segmentation wandering sequence, can by weld industry within 1mm.
N-2-1 positioning principle (N-2-1locatingprinciple) is determined the basis of traditional 3-2-1 positioning fixture locating point position puts forward in the yielding feature of normal orientation for flexible thin part in the employing calculus of variations in 1996 by people such as CaiW., its main thought is: the first datum level is arranged the distortion going to limit this direction (i.e. cylindrical shell normal direction) more than three anchor points, i.e. the first points N >=3, datum level location; Simultaneously because the geometrical deviation that clamping place application point is minimum all may cause sheet member to produce huge amount of deflection and potential unstability, therefore forbid arranging anchor point at tow sides simultaneously.Symmetrical segmentation wandering sequence is the selection process of thin-wall workpiece welding, the localization method of optimum and optimum welding procedure combine by the present invention's weldering, and the structural rigidity of frock is also fine, can control welding deformation to greatest extent, can by weld industry within 1mm.
2, carry on the back argon protected effect good, the equal non-oxidation of back of weld, weld seam all meets quality criteria requirements.
3, the welding equipment tooling production cycle is short, with low cost, sturdy and durable, easy and simple to handle.
4, frock has versatility, can be used for various thin-wall barrel work workpiece welding longitudinal seam.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of this frock;
Fig. 2 is the top board modular construction schematic diagram of this frock;
Fig. 3 is the back of the body argon plate member structural representation of this frock;
Fig. 4 is the bracket component structural representation of frock;
Fig. 5 is the working state schematic representation of frock.
Fig. 1--in Fig. 5: 1, top board parts; 2, argon plate member is carried on the back; 3, bracket component; 11, top board; 12, holding screw; 13, top board red copper backing plate; 14, technique lug; 15, welding gun groove; 16, graticule a; 17, graticule b; 18, tapped through hole; 21, argon plate is carried on the back; 22, argon plate red copper backing plate is carried on the back; 23, argon chamber is carried on the back; 24, step; 25, graticule c; 31, assembly pulley; 32, hinge; 33, support.
Fig. 6 is the cross section profile schematic diagram of pre-bending cylindrical shell;
Fig. 7 is symmetrical segmentation skip welding schematic diagram.
Detailed description of the invention
First welding tooling is manufactured, as shown in Figure 1, Figure 2, Figure 3 shows: this frock comprises and being made up of the top board parts 1 set gradually from top to bottom, back of the body argon plate member 2 and bracket component 3.
Described top board parts 1 comprise pressing plate 11 and the red copper backing plate 13 thereof of arranged superposed, on pressing plate 11 occupies, plate face has the welding gun groove 15 of vertical through pressing plate 11, red copper backing plate 13, row's tapped through hole 18 is respectively equipped with in welding gun groove 15 both sides, holding screw 12 is furnished with in hole, two row's tapped through holes 18 are arranged symmetrically with relative to welding gun groove 15, often arrange holding screw 12 quantity at least 3, as cylindrical shell normal direction anchor point; Be provided with two technique lugs 14 in the side of welding gun groove 15, be fixed on pressing plate 11, this technique lug 14 withstands cylinder body outer wall, as the tangential anchor point of cylindrical shell.
Described back of the body argon plate member 2 comprises back of the body argon plate 21 and the red copper backing plate 22 thereof of arranged superposed, on red copper backing plate 22 occupies, the end face of red copper backing plate 22 is as the positioning reference plane of clamping cylindrical shell, a limited step 24 is provided with at the tail end of red copper backing plate 22, for withstanding one end of cylindrical shell, as drum shaft to anchor point, this anchor point and above-mentioned normal direction, tangential anchor point realize N-2-1 positioning principle jointly; Have longitudinally through groove at the end face of back of the body argon plate 21 along its center line, this groove and red copper backing plate 22 surround to form carries on the back argon chamber 23; In red copper backing plate 22 center line both sides, have two row's apertures, be arranged symmetrically with relative to center line, enter the passage of weld seam as argon gas; Be respectively equipped with connecting bolt in four bights of back of the body argon plate 21, its stud runs through red copper backing plate 22, top board parts 1, fastening nut, top board parts 1 and back of the body argon plate member 2 can be fixed.
In top board parts 1 and back of the body argon plate member 2, arrange red copper backing plate 13,22 respectively, be to protect drum surface not to be scratched.
In above-mentioned structure, the surface groove of welding gun groove 15 preferably " V " tee section, inclination angle of inclined plane 45 °, to observe the situation in weld seam molten bath.Tapped through hole 18 is preferably screw-threaded counterbore, and correspondingly, holding screw 12 hexagon socket countersunk flat cap head screw, makes its compact conformation, is convenient to clamping operation, does not interfere with each other when revolving screw.
On pressing plate 11 plate face outside welding gun groove 15 two ends, be carved with center line markings a16 respectively, these center line markings a16 overlaps with the center line of welding gun groove 15, is convenient to the contraposition when clamping cylindrical shell.
On red copper backing plate 13 plate face outside welding gun groove 15 two ends, be carved with center line markings b17 respectively, these center line markings b17 is corresponding with center line markings a16, is convenient to the contraposition when installing pressing plate 11 and red copper backing plate 13.
Red copper backing plate 22 being carved with center line markings c25, being convenient to back of the body argon plate member 2 and top board parts 1 centering when installing cylindrical shell.After cylindrical shell is fixing, middle line index a16, b17, c25 projection in the vertical direction overlaps.
As shown in Figure 4: described bracket component 3 comprises support 33, assembly pulley 31, hinge 32; Described support 33 is made up of a rectangle underframe and a pair trapezoidal frame assembly welding, the end face of two frames is as the datum level installing pressing plate component 1, back of the body argon plate member 2, the end face of a frame is provided with hinge 32, and the tail end of described back of the body argon plate member 2 is hinged by hinge 32 and frame; The end face of another frame is provided with assembly pulley 31, this assembly pulley 31 has top sheave and the lower sheave of arranged superposed, wherein, lower sheave is fixed on the end face of frame, and top sheave is connected with the head end of back of the body argon plate member 2, does not connect mutually between top sheave, lower sheave, the head end of back of the body argon plate member 2 is made to become free end, can be elevated, with support opening and closing, to put cylindrical shell into when using.The effective depth of assembly pulley 31, hinge 32 is identical, makes the end face of cylindrical shell positioning reference plane and red copper backing plate 22 be in level.
As shown in Figure 5, this frock is installed and used sequentially as follows:
(1), the nut unloaded on top board parts 1, take off top board parts 1.
(2), mention the free end carrying on the back argon plate member 2, the space of thin-wall barrel to be welded between two groups of pulleys of assembly pulley 31 is sent into, then put down the free end of back of the body argon plate member 2.
(3), adjust thin-wall barrel position to be welded, its one end is contacted with limited step 24, realizes axial location, be loaded on pressing plate component 1, the outer wall of cylindrical shell is contacted with two technique lugs 14, realize tangentially locating.
(4), by the holding screw of weld seam both sides tighten, compacting weld seam butt joint edge, realize normal direction location;
(5), pass into argon gas after, according to segmented node quantity and the welding sequence of segmentation spot welding, one by one spot welding is imposed to segmented node, until be soldered all segmented node;
(6), pass into argon gas after, according to number of fragments and the welding sequence of segmentation weldering, one by one to every section of welding, until be soldered whole piece weld seam, postwelding takes out cylindrical shell by reverse erection sequence.
This gas turbine burner inner barrel manufacture method, step is as follows:
1), by driven dimension blanking nickel-base alloy plate, butt joint edge cuts out bevel for welding;
2), upper veneer reeling machine is rolled into flat drum shape, and its cross section profile is long hole shape, sees Fig. 6, and barrel is surrounded by pair of planar plate and a pair semi arch curved slab, and butt weld is positioned on the longitudinal midline of one piece of surface plate, and bevel for welding is outside;
3), this butt weld is welded as follows:
A. based on N-2-1 positioning principle, by frock, at least 3 anchor points are set in cylindrical shell normal direction, 2 anchor points are tangentially set at cylindrical shell, in drum shaft to arranging 1 anchor point, by these anchor points, cylindrical shell are fixed.
B. symmetrical segmentation wandering sequence is adopted, as shown in Figure 7, weld seam is divided into several sections, optimal segmentation quantity and the welding sequence of weld seam is found out by welding finite element analysis software SYSWELD, first one by one segmented node is compressed by spot welding number of fragments and welding sequence, impose spot welding, until be soldered all segmented node; Each welding section is welded one by one, until be soldered whole piece weld seam again by segmentation weldering number of fragments and welding sequence.Because back of weld that tube structure is limit cannot back chipping, therefore longitudinal seam adopts the method for single face welding and double face shaping to carry out welding.The poor fluidity of nickel-base alloy, for avoiding the generation of weld defect, needs low_input_power amount, and adopt multilayer multiple tracks GTAW, weld seam must strictly take back side argon-filled protection measure to prevent backside oxide, to ensure welding quality.Such as weld the longitudinal seam that a segment length is 200mm, every section of fusion length e value is comparatively reasonable between 30mm to 40mm, then can be divided into 6 sections and weld, desirable 15 ° ~ 45 ° of butt weld bevel angle, without root face.First in two butt weld bevelled edge and welding equipment frock center line being looked for, it is comparatively reasonable that root gap gets 0.7 ~ 2mm, compresses holding screw, compress levelling by two butt jointing thin from middle to both sides.By spot welding precedence diagram successively spot welding in order, should notice before spot welding that whether two butting grooves places are parallel, prevent misalignment.After being soldered all segmented node, then carry out segmentation welding by segmentation weldering precedence diagram, every section of layering welding, at least welds two-layer, until be soldered whole piece weld seam.
The subject matter affecting welding quality has:
1. the sensitiveness of fire check
Easily produce fire check during welding, as solidification cracking, polygonization crack and ductility dip cracking, fire check occurs at high temperature, no longer expands under normal temperature.Improve anti-crack ability and the decay resistance of weld seam, the cleaning of welding the thoroughly clean of front weld zone and workpiece need be paid special attention to, avoid objectionable impurities to fuse into weld seam.
2. sensitizing temperature
High heat input welding abros is adopted to have a negative impact.Because poor Cr, poor Mo phenomenon easily occur crystal boundary in sensitizing temperature district, cause intercrystalline corrosion and stress corrosion inclination to occur, should select little weld heat input and avoid at the interval overstand of sensitizing temperature is the effective measures ensureing to obtain high-quality welded joint.Prevent the grain growth of Seam and heat effected zone and the precipitation of carbide, should interlayer temperature be controlled, be generally no more than 90 DEG C.
3. the poor fluidity of liquid weld metal.
Nickel-base alloy weld metal is not easy moistening expansion, even if increase of weld current can not improve the mobility of weld metal, plays illeffects on the contrary, and this is the inherent characteristic of abros.The scope that welding current exceedes regulation not only makes bath superheat, increases fire check sensitiveness, and the deoxidier in weld metal is evaporated, occur pore.Due to weld metal poor fluidity, not easily flow to weld seam both sides, therefore for obtaining good appearance of weld, adopt little swing technique, welder, when swinging to each side pole extreme position, slightly makes a short pause, to avoid undercut.
4. pore
Clear up groove face grease, oxide, impurity as much as possible, select suitable shield gas flow rate, welding in calm, non-dusting environment, all effectively can reduce the probability that pore generates.Clean is a most important aspect in the corrosion-resistant nickel-based alloy of welding.
5. suitable speed of welding
Speed of welding is too fast, causes molten pool metal not fuse fully with mother metal.Speed of welding is excessively slow, and weld metal heat input is excessive, and heat affected area produces overheated structure, coarse grains, and welding point physical property declines.
4), polishing welding seams, grind off crator, the inside and outside cylinder of itself and cylindrical shell flushed;
5), on to roll bed round as a ball, eliminate the distortion of all directions; Roll a lower roll parcel flameproof fabric time round as a ball to protect, prevent from scratching cylindrical shell, the internal diameter of cylindrical shell all directions measured by round as a ball rear inside micrometer, checks its cylindricity.
6), solution heat treatment, improve cylindrical shell plasticity, make its contour shape keep stable.
7), because this nickel-base alloy cylindrical shell cylindricity requires higher, the common bed that rolls cannot reach this precision, thus roll bed round as a ball after also need further school circle, adopt liner school sired results dress, again orthopedic with hydraulic press, its cylindricity is met the requirements.
Claims (10)
1. a gas turbine burner inner barrel manufacture method, this cylinder material is nickel-base alloy, wall thickness δ 1.5 ~ 6mm, internal diameter Φ 300 ~ 600mm, tube length 400 ~ 800mm, and manufacturing step is as follows:
1), by driven dimension blanking nickel-base alloy plate, butt joint edge cuts out bevel for welding;
2), upper veneer reeling machine is rolled into flat drum shape, and its cross section profile is long hole shape, and barrel is surrounded by pair of planar plate and a pair semi arch curved slab, and butt weld is positioned on the longitudinal midline of one piece of surface plate, and bevel for welding is outside;
3), this butt weld is welded as follows:
A. based on N-2-1 positioning principle, by frock, at least 3 anchor points are set in cylindrical shell normal direction, 2 anchor points are tangentially set at cylindrical shell, in drum shaft to arranging 1 anchor point, by these anchor points, cylindrical shell are fixed;
B. symmetrical segmentation wandering sequence is adopted, weld seam is divided into several sections, optimal segmentation quantity and the welding sequence of weld seam is found out by welding finite element analysis software SYSWELD, first one by one segmented node is compressed by spot welding number of fragments and welding sequence, impose spot welding, until be soldered all segmented node; Each welding section is welded one by one, until be soldered whole piece butt weld again by segmentation weldering number of fragments and welding sequence;
4), polishing welding seams, the inside and outside cylinder of itself and cylindrical shell is flushed;
5), upper spheronizator is round as a ball, eliminates the distortion of all directions;
6), solution heat treatment, improve cylindrical shell plasticity;
7), use hydraulic press orthopedic, its ovality is met the requirements.
2. gas turbine burner inner barrel manufacture method according to claim 1, it is characterized in that: in step 3), clear up within the scope of butt welded seam groove surfaces externally and internally 50mm before welding, sanding machine polishing is adopted to remove oxide-film until expose metallic luster, clean with acetone again, wipe oil, burr, oxide skin harmful substance.
3. gas turbine burner inner barrel manufacture method according to claim 1, is characterized in that: in step 3), the protection of described weld seam welded bands back of the body argon.
4. gas turbine burner inner barrel manufacture method according to claim 1, is characterized in that: in step 3), and described segmentation weldering adopts the method for single face welding and double face shaping, point multilayer welding, at least two-layer.
5. gas turbine burner inner barrel manufacture method according to claim 4, is characterized in that: the interlayer temperature of described point of multilayer welding is no more than 90 DEG C.
6. gas turbine burner inner barrel manufacture method according to claim 1, is characterized in that: described bevel for welding angle 15 ° ~ 45 °, bottom gap 0.7 ~ 2mm.
7., for the frock of method described in any one of claim 1 ~ 6, comprise by the top board parts set gradually from top to bottom, back of the body argon plate member, bracket component;
Described top board parts comprise pressing plate and the red copper backing plate thereof of arranged superposed, on pressing plate occupies, plate face has the welding gun groove of vertical through pressing plate and red copper backing plate thereof, row's tapped through hole is respectively equipped with in welding gun groove both sides, holding screw is furnished with in hole, two row's tapped through holes are arranged symmetrically with relative to welding gun groove, often arrange holding screw quantity at least three, as cylindrical shell normal direction anchor point; Be provided with two technique lugs in the side of welding gun groove, be fixed on pressing plate, this technique lug withstands cylinder body outer wall, as the tangential anchor point of cylindrical shell;
Described back of the body argon plate member comprises back of the body argon plate and the red copper backing plate thereof of arranged superposed, on red copper backing plate occupies, the end face of red copper backing plate is as the positioning reference plane of clamping cylindrical shell, a limited step is provided with at the tail end of red copper backing plate, for withstanding one end of cylindrical shell, as drum shaft to anchor point, this anchor point and above-mentioned normal direction, tangential anchor point realize N-2-1 positioning principle jointly; Have groove at the end face of back of the body argon plate along its center line, this groove and red copper backing plate surround to form carries on the back argon chamber; In red copper backing plate center line both sides, have two row's apertures, be arranged symmetrically with relative to center line, enter the passage of weld seam as argon gas; Be respectively equipped with connecting bolt in four bights of back of the body argon plate, its stud runs through red copper backing plate, top board parts, fastening nut, top board parts and back of the body argon plate member can be fixed.
8. frock according to claim 7, is characterized in that:
The row-to-row distance of described two row's apertures is slightly less than weld seam bottom width, often arranges aperture and is longitudinally being uniformly distributed, and two row's apertures, in opposite directions in zigzag interlaced arrangement, make argon gas evenly enter weld seam both sides;
On pressing plate plate face outside welding gun groove two ends, be carved with center line markings a respectively, these center line markings a overlaps with the center line of welding gun groove; On backing plate plate face outside welding gun groove two ends, be carved with center line markings b respectively, these center line markings b is corresponding with center line markings a; Copper plate is carved with center line markings c, and after cylindrical shell is fixing, center line markings a, b, c projection in the vertical direction overlaps;
Described welding gun groove is the surface groove of " V " tee section, inclination angle of inclined plane 45 °;
Described tapped through hole is screw-threaded counterbore, and correspondingly, holding screw is hexagon socket countersunk flat cap head screw.
9. frock according to claim 7, is characterized in that: described bracket component comprises support, assembly pulley, hinge; Described support is made up of a rectangle underframe and a pair trapezoidal frame assembly welding, the end face of two frames is as the datum level installing pressing plate component, back of the body argon plate member, the end face of a frame is provided with hinge, the tail end of described back of the body argon plate member by hinge and frame hinged; The end face of another frame is provided with assembly pulley, this assembly pulley has top sheave and the lower sheave of arranged superposed, wherein, lower sheave is fixed on the end face of frame, top sheave is connected with the head end of back of the body argon plate member, does not connect mutually, make the head end of back of the body argon plate member become free end between upper and lower pulley, can be elevated, with support opening and closing.
10. frock according to claim 9, is characterized in that: the effective depth of described assembly pulley, hinge is identical, and the end face making cylindrical shell positioning reference plane namely carry on the back the red copper backing plate of argon plate is in level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410113754.8A CN103862146B (en) | 2014-03-25 | 2014-03-25 | Gas turbine burner inner barrel manufacture method and frock |
Applications Claiming Priority (1)
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| CN104339111B (en) * | 2014-09-16 | 2016-01-13 | 沈阳飞机工业（集团）有限公司 | A kind of processing method of labyrinth weld jig |
| CN106556256A (en) * | 2015-09-28 | 2017-04-05 | 中国二冶集团有限公司 | The brick building method of burner pipe and its burner pipe brick masonry holder |
| CN107052666B (en) * | 2017-03-03 | 2018-10-23 | 哈尔滨汽轮机厂有限责任公司 | Term durability gas turbine flame barrel mixer welding tooling and the welding method for using the tooling |
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| CN109590608B (en) * | 2019-01-15 | 2024-04-26 | 沧州宏涛智能设备有限公司 | Joint-to-joint integrated fusion penetration welding method and device |
| CN112404714B (en) * | 2020-10-27 | 2022-06-10 | 中国核动力研究设计院 | Hollow cylinder welding method and welding tool |
| CN115382853B (en) * | 2022-08-31 | 2023-12-08 | 北京航星机器制造有限公司 | Laser cleaning clamping equipment, cleaning system and method for axial welding area of cylinder |
| CN115533279A (en) * | 2022-11-24 | 2022-12-30 | 四川科新机电股份有限公司 | Deformation-preventing assembly welding method |
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