CN105479115A - Forming method for sliver welding plate for brazed specially-shaped Stellite alloy plate for steam turbine blade - Google Patents
Forming method for sliver welding plate for brazed specially-shaped Stellite alloy plate for steam turbine blade Download PDFInfo
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- CN105479115A CN105479115A CN201511021800.2A CN201511021800A CN105479115A CN 105479115 A CN105479115 A CN 105479115A CN 201511021800 A CN201511021800 A CN 201511021800A CN 105479115 A CN105479115 A CN 105479115A
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- silver soldering
- forming method
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention discloses a forming method for a sliver welding plate for a brazed specially-shaped Stellite alloy plate for a steam turbine blade. The forming method comprises the following steps: processing of a forming mould: milling and processing out an alloy slot shape through square steel as a lower mould, and linearly cutting the 3D part of the Stellite alloy plate as an upper mould; pre-forming: unloading the sliver welding plate according to needs, putting the sliver welding plate on an alloy slot, and pressing the sliver welding plate by use of U-type pliers; forming: heating the lower mould at a heating temperature of 100-500 DEG C; under action of external force, fitting the 3D part of the alloy plate to the alloy slot; cooling: cooling to the room temperature in air; and grinding: completing the forming after grinding the sliver welding plate to have metallic luster. The forming method effectively solves the problem that the sliver welding plate, the alloy slot and the alloy plate are fitted bad due to a large forming resilience rate, at the room temperature, of the thin sliver welding plate, and poor dimension consistency after manual forming, and meets the sliver welding plate filling requirements during brazing of the 3D alloy plate very well.
Description
Technical field
The invention belongs to turbine blade brazing alloy chip technology, particularly relate to the forming method of a kind of turbine blade soldering abnormity stellite alloy film silver soldering sheet.
Background technology
There is in steam admission side soldering a slice of turbine blade the hard stellite alloy film of good corrosion resistance, effectively can slow down the water erosion effect that blade produces in running.Along with the development of the anti-water erosion technology of turbine blade, in order to improve the liquid impact erosion resistance of blade, the face shaping of this hard metal tip is according to the needs in anti-water erosion region, and its configuration design is more and more tending towards complicated.
Stellite alloy film usually adopts the method for soldering to be connected with blade body by alloy sheet.The process of soldering stellite alloy film is: blade body, alloy sheet and silver soldering sheet are heated to the fusing of silver soldering sheet, among the gap between free-pouring silver soldering liquid filler alloys sheet and body alloy groove, after cooling, realize the connection of alloy sheet and blade.Laminating gap between alloy sheet and blade alloy groove directly affects flowing and the filling of silver solder, and the too small silver soldering liquid that easily causes in gap flows bad and causes filling uneven; Excesssive gap then causes silver soldering liquid to run off and causes local silver solder not enough and form defect.Silver soldering sheet is a kind of Ag-Cu alloy, and its thickness is generally only 0.3mm, and has good toughness.Therefore during bending silver soldering sheet, because its larger deformation resilience rate causes that the shaping difficulty of silver soldering sheet is large, compact dimensions low precision.The precision of silver soldering sheet compact dimensions, determines the size in the gap between alloy sheet and alloy groove, has important impact to the forming gap after heating between alloy sheet and alloy groove and even soldered seam quality.In the soldering of irregular alloy sheet, it is particularly evident that this required precision embodies.
Summary of the invention
The object of the present invention is to provide the forming method of a kind of turbine blade soldering abnormity stellite alloy film silver soldering sheet, thin silver soldering sheet room temperature compacted under rebound degree in prior art be large to solve, silver soldering sheet that dimensional uniformity difference after offhand causes and alloy groove, alloy sheet the problems such as laminating is bad.
For reaching this object, the present invention by the following technical solutions:
A forming method for turbine blade soldering abnormity stellite alloy film silver soldering sheet, it comprises the following steps:
Step 1) processing of mould: go out alloy groove shape as counterdie by square steel Milling Machining, the shape of the alloy groove of described counterdie should be consistent with the alloy groove shape of blade to be brazed; The 3D section of Linear cut stellite alloy film as patrix,
Step 2) preformed: silver soldering sheet is carried out blanking on request, and blank size is determined according to the use amount of solder; Manual that silver soldering bending tablet is similar to alloy groove profile, and silver soldering sheet is positioned on alloy groove, use U-shaped pincers to be compressed by silver soldering sheet,
Step 3) shaping: counterdie is heated, heating-up temperature 100-500 DEG C; Use external force to knock patrix gently, the 3D section of alloy sheet fitted with alloy groove under external force,
Step 4) cooling: be cooled to room temperature in atmosphere,
Step 5) polishing: polish to cooled silver soldering sheet, scale removal, after silver soldering sheet is polished metallic luster, shapingly to complete.
Especially, described step 1) in Linear cut stellite alloy film time, excision specification shape, only retains irregular the 3D section.
Especially, described step 2) in silver solder area after blanking should be greater than the area of flute profile corresponding to alloy sheet the 3D section.
Especially, described step 3) in adopt oxy-acetylene to carry out homogeneous heating to lower mould, and use temperature measurer Real-Time Monitoring mold temperature.
Especially, described step 5) in by any one of scouring pad or sand paper, cooled silver soldering sheet is polished.
Beneficial effect of the present invention is, the problems such as the silver soldering sheet that compared with prior art forming method of described turbine blade soldering abnormity stellite alloy film silver soldering sheet efficiently solves that thin silver soldering sheet room temperature compacted under rebound degree is large, dimensional uniformity difference after offhand causes and the laminating of alloy groove, alloy sheet are bad, the requirement of filling silver soldering sheet when meeting soldering 3D alloy sheet preferably.
Accompanying drawing explanation
Fig. 1 is the structural representation of the mould of the forming method of the turbine blade soldering abnormity stellite alloy film silver soldering sheet that the specific embodiment of the invention 1 provides;
Fig. 2 is the pre-formed states figure of the forming method of the turbine blade soldering abnormity stellite alloy film silver soldering sheet that the specific embodiment of the invention 1 provides;
Fig. 3 is the another pre-formed states figure of the forming method of the turbine blade soldering abnormity stellite alloy film silver soldering sheet that the specific embodiment of the invention 1 provides;
Fig. 4 is the completed state figure of the forming method of the turbine blade soldering abnormity stellite alloy film silver soldering sheet that the specific embodiment of the invention 1 provides.
In figure:
1, counterdie; 10, alloy groove; 2, patrix; 3, silver soldering sheet; 4, clamp.
Detailed description of the invention
Technical scheme of the present invention is further illustrated by detailed description of the invention below in conjunction with accompanying drawing.
Refer to shown in Fig. 1 to Fig. 4, in the present embodiment, a kind of forming method of turbine blade soldering abnormity stellite alloy film silver soldering sheet, it comprises the following steps:
The processing of mould: the mode adopting machining, square steel is processed into simulation blade, simulation blade takes from a part for blade as counterdie 1, and this part is the part that blade contains alloy groove 10, require the alloy groove 10 of simulation blade should with real blade with alloy groove consistent.The stellite alloy film (3D alloy sheet) selecting a slice complete, use Linear cut or other machining process, cut by the 3D section of this 3D alloy sheet, cutting position is positioned near the boundary of alloy sheet 3D curvature portion, using the 3D curvature portion that the cuts patrix 2 as mould.
The blanking of silver soldering sheet: according to the size in stellite alloy film the 3D section region, determines the blank size of silver soldering sheet 3, and it is wide that silver solder specification is generally the thick X16.5mm of 0.3mm, and the silver solder area after blanking should be greater than the area of flute profile corresponding to alloy sheet the 3D section.
Cold conditions preformed: conveniently fix, should make by hand or silver soldering sheet 3 is carried out prebuckling to the profile close with alloy groove by other mechanical means, and is fixed between alloy groove 10 and patrix 2 by silver soldering sheet 3, and uses " U " type clamp 4 to fix.
The heating of mould: use oxyacetylene torch to heat the counterdie 1 that simulation blade is made, use Non-contacting Infrared Thermometer to detect the heating-up temperature of mould simultaneously, by mold heated to 100-500 DEG C, the temperature when silver soldering sheet 3 starts softening is for best.
Shaping: after counterdie 1 is heated to forming temperature 100-500 DEG C, knock the fore shaft position (as arrow A indication position in Fig. 4) of patrix 2 gently, adjustment patrix 2 position, is pushed into the position fitted with alloy groove 10 by patrix 2.After patrix 2 and alloy groove 10 fit, fastening " U " type clamp 4 further, makes silver soldering sheet 3 be in by the state of patrix 2 with alloy groove 10 firm grip.
Cooling: naturally cool to room temperature in air.
Polishing: use scouring pad or sand paper to polish, till there is metallic luster to silver soldering sheet 3 surface gently.
Above embodiment has just set forth general principle of the present invention and characteristic; the present invention does not limit by above-mentioned example; without departing from the spirit and scope of the present invention, the present invention also has various change and change, and these changes and change all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (5)
1. a turbine blade soldering abnormity stellite alloy film forming method for silver soldering sheet, it is characterized in that, it comprises the following steps:
Step 1) processing of mould: go out alloy groove shape as counterdie by square steel Milling Machining, the shape of the alloy groove of described counterdie should be consistent with the alloy groove shape of blade to be brazed; The 3D section of Linear cut stellite alloy film as patrix,
Step 2) preformed: silver soldering sheet is carried out blanking on request, and blank size is determined according to the use amount of solder; Manual that silver soldering bending tablet is similar to alloy groove profile, and silver soldering sheet is positioned on alloy groove, use U-shaped pincers to be compressed by silver soldering sheet,
Step 3) shaping: counterdie is heated, heating-up temperature 100-500 DEG C; Use external force to knock patrix gently, the 3D section of alloy sheet fitted with alloy groove under external force,
Step 4) cooling: be cooled to room temperature in atmosphere,
Step 5) polishing: polish to cooled silver soldering sheet, scale removal, after silver soldering sheet is polished metallic luster, shapingly to complete.
2. the forming method of turbine blade soldering according to claim 1 abnormity stellite alloy film silver soldering sheet, is characterized in that, described step 1) in Linear cut stellite alloy film time, excision specification shape, only retains irregular the 3D section.
3. the forming method of turbine blade soldering according to claim 1 abnormity stellite alloy film silver soldering sheet, is characterized in that, described step 2) in silver solder area after blanking should be greater than the area of flute profile corresponding to alloy sheet the 3D section.
4. the forming method of turbine blade soldering abnormity stellite alloy film silver soldering sheet according to claim 1, it is characterized in that, described step 3) in adopt oxy-acetylene to carry out homogeneous heating to lower mould, and use temperature measurer Real-Time Monitoring mold temperature.
5. the forming method of turbine blade soldering according to claim 1 abnormity stellite alloy film silver soldering sheet, is characterized in that, described step 5) in by any one of scouring pad or sand paper, cooled silver soldering sheet is polished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511021800.2A CN105479115B (en) | 2015-12-30 | 2015-12-30 | The forming method of turbine blade soldering abnormity stellite alloy film silver soldering piece |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511021800.2A CN105479115B (en) | 2015-12-30 | 2015-12-30 | The forming method of turbine blade soldering abnormity stellite alloy film silver soldering piece |
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| CN105479115A true CN105479115A (en) | 2016-04-13 |
| CN105479115B CN105479115B (en) | 2018-01-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108857147A (en) * | 2018-06-29 | 2018-11-23 | 陕西图灵电子科技有限公司 | A kind of tin bismuth preformed solder production technology |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02147192A (en) * | 1988-11-25 | 1990-06-06 | Tanaka Kikinzoku Kogyo Kk | Manufacture of annular brazing filler metal |
| JP2005252029A (en) * | 2004-03-04 | 2005-09-15 | Renesas Technology Corp | Semiconductor device and its manufacturing method, electronic device and mounting structure |
| JP2006320931A (en) * | 2005-05-18 | 2006-11-30 | Nippon Light Metal Co Ltd | Method of soldering, and soldered product |
| CN103008465A (en) * | 2012-12-11 | 2013-04-03 | 天津市津荣天宇精密机械有限公司 | In-die ultrathin soldering aid sheet rivet punching structure |
| CN103406626A (en) * | 2013-07-26 | 2013-11-27 | 郑州大学 | Workpiece curved surface position welding repairing method |
| CN103659201A (en) * | 2013-12-15 | 2014-03-26 | 无锡透平叶片有限公司 | Machining technology of turbine blade with water corrosion prevention achieved by means of laser cladding |
| CN203726005U (en) * | 2013-12-23 | 2014-07-23 | 江阴亿欣新材料科技有限公司 | Solder strip forming device |
| CN103994013A (en) * | 2014-04-24 | 2014-08-20 | 云南电力试验研究院（集团）有限公司电力研究院 | Abrasion-proof method of water turbine fixed guide vane by welding on hard alloy |
-
2015
- 2015-12-30 CN CN201511021800.2A patent/CN105479115B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02147192A (en) * | 1988-11-25 | 1990-06-06 | Tanaka Kikinzoku Kogyo Kk | Manufacture of annular brazing filler metal |
| JP2005252029A (en) * | 2004-03-04 | 2005-09-15 | Renesas Technology Corp | Semiconductor device and its manufacturing method, electronic device and mounting structure |
| JP2006320931A (en) * | 2005-05-18 | 2006-11-30 | Nippon Light Metal Co Ltd | Method of soldering, and soldered product |
| CN103008465A (en) * | 2012-12-11 | 2013-04-03 | 天津市津荣天宇精密机械有限公司 | In-die ultrathin soldering aid sheet rivet punching structure |
| CN103406626A (en) * | 2013-07-26 | 2013-11-27 | 郑州大学 | Workpiece curved surface position welding repairing method |
| CN103659201A (en) * | 2013-12-15 | 2014-03-26 | 无锡透平叶片有限公司 | Machining technology of turbine blade with water corrosion prevention achieved by means of laser cladding |
| CN203726005U (en) * | 2013-12-23 | 2014-07-23 | 江阴亿欣新材料科技有限公司 | Solder strip forming device |
| CN103994013A (en) * | 2014-04-24 | 2014-08-20 | 云南电力试验研究院（集团）有限公司电力研究院 | Abrasion-proof method of water turbine fixed guide vane by welding on hard alloy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108857147A (en) * | 2018-06-29 | 2018-11-23 | 陕西图灵电子科技有限公司 | A kind of tin bismuth preformed solder production technology |
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| CN105479115B (en) | 2018-01-02 |
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