CN101767175B - Three-center positioning method for manufacturing of pipe nozzle of main steam super pipeline - Google Patents
Three-center positioning method for manufacturing of pipe nozzle of main steam super pipeline Download PDFInfo
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- CN101767175B CN101767175B CN200910273487XA CN200910273487A CN101767175B CN 101767175 B CN101767175 B CN 101767175B CN 200910273487X A CN200910273487X A CN 200910273487XA CN 200910273487 A CN200910273487 A CN 200910273487A CN 101767175 B CN101767175 B CN 101767175B
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Abstract
The invention discloses a three-center positioning method for manufacturing of pipe nozzles of a main steam super pipeline, which relates to a three-center positioning method for utilizing dedicated dies in the manufacturing process of the pipe nozzles of the nuclear power main steam super pipeline. Concentric circular stepped dedicated positioning pins are designed. By each dedicated positioning pin, firstly a pin boss is in clearance fit with the diameter of an inner hole of a female die; a pin head of the dedicated positioning pin is in clearance fit with a preset hole of a pipe blank under the hot condition, i.e. the dedicated positioning pin is concentric to the molded female die; then the dedicated positioning pin is made concentric to the preset hole in front of the molded pipe nozzle of the main pipe blank; corresponding punch, female die and dedicated positioning pin are used for the preset hole of each type of the pipe nozzle; and then the punch on a support bar is concentric to the preset hole by adjusting the support bar in the main pipe blank, thus, the molded female die of the main pipe blank is concentric to the preset hole, the preset hole is concentric to the punch, and the three centers of the molded female die, the preset hole and the punch are collinear. The preset hole is concentric to the punch and the three centers of the molded female die and the preset hole and the punch are collinear so that the pipe nozzles with the uniform dimension can be obtained in the molding process of the pipe nozzles.
Description
Technical field
The present invention relates to a kind of particular manufacturing craft, three-center positioning method in nuclear power main steam super pipeline ozzle manufacture process of utilizing.
Background technology
At present, nuclear energy power generation market both at home and abroad is huge, and nuclear power technology updates very fast.Super pipeline is the important component part of jet chimney, and the production technology of pipe nozzle of main steam super pipeline changes according to the nuclear power designing requirement.According to the nuclear power designing requirement, the ozzle of main steam super pipeline must be managed the solid forging moulding with mother, makes the fiber of ozzle and pipeline continuous; This just requires the ozzle of super pipeline can not be by previous welding manner moulding.
New nuclear power designing requirement ozzle and female pipe solid forging moulding, and in forming process, how to locate alignment, make the ozzle each side size of moulding comparatively even, reach designing requirement, be very difficult.
Summary of the invention
The objective of the invention is at above-mentioned present situation, aim to provide a kind of pitch of holes that can solve in the pipe nozzle of main steam super pipeline production process and determine difficulty and the uneven three-center positioning method for manufacturing of pipe nozzle of main steam super pipeline of distortion.
The implementation of the object of the invention is, three-center positioning method for manufacturing of pipe nozzle of main steam super pipeline, and concrete steps are:
1) with the ozzle preset holes of mother's pipe according to sequence number 1#, 2#, 3#, 4# ozzle, process each special-purpose alignment pin respectively, the preset holes of each preface ozzle adopts corresponding drift, die, special-purpose alignment pin,
2) during a certain sequence number ozzle of moulding, select special-purpose alignment pin according to nozzle size,
3) special-purpose alignment pin is put into the die that is complementary,
4) level meter is placed on plane on the die, adjusts the die socket boom hoisting to the reveal competence position,
5) the lifting dedicated slot on mother's pipe both sides is lifted by crane the formed spring seat with special-purpose hook, by the pipe deadweight, the preset holes center line, female pipe pipe will be automatically vertically upward
6) adjust the center of female pipe pipe inner bracing piece, make presetting slot center line, preset holes center line, support bar inside groove centerline in same plane,
7) lifting die socket inserts the preset holes of pipe with the tapering part of special-purpose alignment pin, rises and falls for several times, finds the optimum position, and special-purpose alignment pin can freely be come off when driving is removed,
8) local heat reaches after the condition, repeats above-mentioned the 7th step rapidly, makes the die position of aliging, and finishes drift, preset holes, the location work of die three-core.
The present invention is by the design specialized alignment pin, deadweight when mother's pipe is lifted by crane by special-purpose lifting groove is corrected, make preset holes vertically upward, and special-purpose alignment pin key seat cooperate with the die inner bore diameter clearance, special-purpose alignment pin pin head and the hot matched in clearance down of the preset holes of female pipe pipe; So just make preset holes and die, by special-purpose alignment pin transition, Concentricity tolerance between the two is controlled in the tolerance acceptable scope, and deviation is less than 1mm.Then by adjusting the support bar in female pipe pipe, the deviation of aliging that makes drift and preset holes on the support bar is less than 1mm, just can be in the 2mm scope by above processing with the concentric Deviation Control of the preset holes of die, pipe, drift, in the punching forming process, just can make the size of ozzle comparatively even, reach designing requirement.
Description of drawings
Fig. 1 is the shaped device sectional schematic diagram after the special-purpose alignment pin alignment,
Fig. 2 is the female pipe of a target product super pipeline pipe structural representation,
Fig. 3 is special-purpose alignment pin.
The specific embodiment
The present invention comes down to a kind of special method of how accurately to locate, to align at drift, preset holes, die in this kind nuclear power main steam super pipeline forming process.
The present invention has designed the special-purpose alignment pin of a kind of concentrically ringed step as shown in Figure 3, and it is made of key seat 10 and pin head 9.
With reference to Fig. 1,2, concrete steps of the present invention are:
1) with the ozzle preset holes of mother's pipe according to sequence number 1#, 2#, 3#, 4# ozzle, process each special-purpose alignment pin respectively, the preset holes of each preface ozzle adopts corresponding drift, die, special-purpose alignment pin,
2) during a certain sequence number ozzle of moulding, select special-purpose alignment pin according to nozzle size,
3) special-purpose alignment pin 1 is put into the die 2 that is complementary, the key seat 10 and the die inner chamber matched in clearance of special-purpose alignment pin,
4) level meter is placed on plane on the die, adjusts die socket 3 boom hoistings, make lifting steadily to the reveal competence position;
5) support bar 7 passes after female pipe pipe 5, and the special-purpose hook of lifting dedicated slot 8 usefulness on mother's pipe 5 both sides is lifted by crane the formed spring seat, and the female pipe of lifting pipe makes preset holes vertically upward,
6) adjust the center of pipe inner bracing piece 7, make drift 6 be in the centre of support bar 7, drift 6 just slides in the groove in support bar 7, adjusts the horizontal level of support bar 7, makes drift 6 be in the centre of support bar 7, promote drift 6, find the optimum position, drift is alignd with preset holes, presetting slot center line, preset holes center line, support bar inside groove centerline is in same plane
7) lifting die socket 3, the female preset holes 4 of managing pipe of pin head insertion with special-purpose alignment pin rises and falls for several times, finds the optimum position, and special-purpose alignment pin can freely be come off when driving is removed,
8) the female pipe of heating pipe 5, the pin in the special-purpose alignment pin 9 passes preset holes 4 under mother's pipe 5 high temperature, make drift 6, preset holes 4, die 2 three-cores are collinear, finish the work of three-core location.
Driving is taken away special-purpose alignment pin after the die seated position, beginning ozzle forming operation.
Claims (1)
1. three-center positioning method for manufacturing of pipe nozzle of main steam super pipeline is characterized in that concrete steps are:
1) with the ozzle preset holes of mother's pipe according to sequence number 1#, 2#, 3#, 4# ozzle, process each special-purpose alignment pin respectively, the preset holes of each sequence number ozzle adopts corresponding drift, die, special-purpose alignment pin,
2) during a certain sequence number ozzle of moulding, select special-purpose alignment pin according to nozzle size,
3) special-purpose alignment pin is put into the die that is complementary,
4) level meter is placed on plane on the die, adjusts the die socket boom hoisting to the reveal competence position,
5) the lifting dedicated slot on mother's pipe both sides is lifted by crane the formed spring seat with special-purpose hook, the female pipe of lifting pipe by the deadweight of mother's pipe, makes preset holes vertically upward,
6) adjust the center of pipe inner bracing piece, make presetting slot center line, preset holes center line, support bar inside groove centerline in same plane,
7) lifting die socket, the female preset holes of managing pipe of tapering part insertion with special-purpose alignment pin rises and falls for several times, finds the optimum position, and special-purpose alignment pin can freely be come off when driving is removed,
8) local heat reaches after the condition, repeats above-mentioned the 7th step rapidly, makes the die position of aliging, and finishes drift, preset holes, the location work of die three-core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910273487XA CN101767175B (en) | 2009-12-31 | 2009-12-31 | Three-center positioning method for manufacturing of pipe nozzle of main steam super pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910273487XA CN101767175B (en) | 2009-12-31 | 2009-12-31 | Three-center positioning method for manufacturing of pipe nozzle of main steam super pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101767175A CN101767175A (en) | 2010-07-07 |
| CN101767175B true CN101767175B (en) | 2011-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910273487XA Active CN101767175B (en) | 2009-12-31 | 2009-12-31 | Three-center positioning method for manufacturing of pipe nozzle of main steam super pipeline |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102211269A (en) * | 2010-12-30 | 2011-10-12 | 武汉重工铸锻有限责任公司 | Method for controlling phase position of nuclear power main steam super pipeline nozzle |
| CN102527828B (en) * | 2011-12-26 | 2014-06-04 | 武汉重工铸锻有限责任公司 | Dynamic level and balance follow control method of super pipeline nozzle forming process |
| CN102581156B (en) * | 2011-12-26 | 2013-11-06 | 武汉重工铸锻有限责任公司 | Method for precisely positioning stamping die in process of forming nozzle of nuclear power main steam super-pipeline |
| CN106269949B (en) * | 2016-08-13 | 2018-03-13 | 江苏标新工业有限公司 | A kind of manufacturing process of the big small-bore pipeline ozzle of super 60mm wall thickness |
| CN110280740B (en) * | 2018-03-19 | 2023-08-01 | 科华控股股份有限公司 | Center positioning device and method for vacuum suction casting mold |
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2009
- 2009-12-31 CN CN200910273487XA patent/CN101767175B/en active Active
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| CN101767175A (en) | 2010-07-07 |
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