CN102773314A - Shape-correcting method for cone-shaped cylinder after deformation of heat treatment for steam generator of nuclear power equipment - Google Patents
Shape-correcting method for cone-shaped cylinder after deformation of heat treatment for steam generator of nuclear power equipment Download PDFInfo
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- CN102773314A CN102773314A CN2011101181710A CN201110118171A CN102773314A CN 102773314 A CN102773314 A CN 102773314A CN 2011101181710 A CN2011101181710 A CN 2011101181710A CN 201110118171 A CN201110118171 A CN 201110118171A CN 102773314 A CN102773314 A CN 102773314A
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Abstract
The invention discloses a shape-correcting method for a cone-shaped cylinder after deformation of heat treatment for a steam generator of nuclear power equipment, wherein the shape of a cone-shaped cylinder forge piece for the steam generator after deformation of heat treatment is corrected by using a megaton press. The method comprises the steps of: 1, measuring the size of a cone-shaped cylinder workpiece; 2, filling axis of the workpiece horizontally; 3, placing the workpiece on the press so that a hammering block of the press is aligned with the section of the workpiece to be corrected in shape, and rotating the workpiece so that the part of the shape-corrected section with the maximum deformation is below the hammering block of the press, and implementing a shape-correcting process; 4, rotating the workpiece so that the other end of the shape-corrected section is below the hammering block of the press, and repeating the shape-correcting process; and 5, carrying out destressing thermal treatment. After shape correction and destressing thermal treatment, sizes of ends of the cone-shaped cylinder can meet the requirements of a delivery chart, and at least 5mm margin is reserved for a single edge.
Description
Technical field
The present invention relates to a kind of manufacturing approach of nuclear power generating equipment, be specifically related to the straightening method of a kind of nuclear power generating equipment steam generator after with the conical shell heat treatment deformation.
Background technology
At present, global nuclear power has got into a high-speed developing period, and the nuclear power forging market prospects in the China and even the world are boundless.Along with the increase of the installed capacity of nuclear power generating sets, the heavy forging size that nuclear island primary device critical component steam generator, pressure vessel, voltage-stablizer are used is increasing.
Along with the increase of nuclear island primary device size, corresponding forging ' s block dimension also increases thereupon, and the manufacture difficulty of forging also increases thereupon.Wherein, steam generator is exactly to increase one of problem that produces along with forging ' s block dimension with the heat treatment deformation of conical shell forging.Because the diameter of this conical shell is big, wall thickness is little, can't avoid the heat treatment deformation of conical shell forging, and this distortion can cause satisfying follow-up accurately machined dimensional requirement.
Summary of the invention
Technical problem to be solved by this invention provides the straightening method of a kind of nuclear power generating equipment steam generator after with the conical shell heat treatment deformation, and it can carry out school shape to the conical shell after the distortion.
For solving the problems of the technologies described above, nuclear power generating equipment steam generator of the present invention uses the technical solution of the straightening method behind the conical shell heat treatment deformation to be:
Use ten thousand tons of press, the steam generator that deforms through heat treatment carried out school shape with the conical shell forging, may further comprise the steps:
The first step is measured the size of conical shell workpiece, and measurement size is carried out cue mark on workpiece;
Said measuring method is: at the selected shaft section of the big end of workpiece, measure minimum and maximum " diameter " on this shaft section;
At the selected shaft section of the small end of workpiece, measure minimum and maximum " diameter " on this shaft section.
Second step became level with the axis pad of workpiece so that press depress direction perpendicular to conical shell axially; Workpiece is fixed along axis direction;
The 3rd step was placed on workpiece on the press, made press hammering block alignment pieces need the cross section of school shape; Turning of work piece makes the deflection maximum of school tee section be positioned at the below of press hammering block, implements school shape process;
Said school shape process is: slowly depress, implement the process of depressing for the first time, drafts is 120mm for the first time, depresses the back and keeps lifting the press hammering block after 3～10 minutes; Wait to rebound and stablize the size that this place is measured in the back, if do not meet the requirements of size, for the second time press is slowly depressed, drafts is not more than 120mm for the second time, keeps after depressing lifting the press hammering block after 3～10 minutes, measures once more, meets the demands until size.
The 4th step; Turning of work piece makes the other end of school tee section be positioned at the below of press hammering block, repeats school shape process; This cross section until workpiece is tending towards positive circle, and this shaft section size everywhere all satisfies the machining allowance of delivery figure size and the monolateral 5mm of being no less than in this optional position, cross section;
In the 5th step, carry out destressing heat treatment.
Said destressing heat-treating methods is: workpiece is put into heat-treatment furnace, make workpiece under 300～350 ℃ temperature, be incubated 2～4 hours, the temperature that makes heat-treatment furnace then is warming up to 600 ± 20 ℃ with the speed of≤50 ℃/h, is incubated 2～6 hours; The temperature that then makes heat-treatment furnace is cooled to 350 ± 20 ℃ with the speed of≤50 ℃/h, and last air cooling is to room temperature.
The technique effect that the present invention can reach is:
The present invention is after school shape and destressing heat treatment, and the size of respectively holding of conical shell can both satisfy delivery figure requirement, and monolateral at least the 5mm surplus is arranged.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further detailed explanation:
Fig. 1 is the sketch map of conical shell;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the sketch map that the straightening method after adopting nuclear power generating equipment steam generator of the present invention with the conical shell heat treatment deformation carries out school shape to the big end of workpiece;
Fig. 4 is the sketch map that adopts the present invention the workpiece small end to be carried out school shape;
Fig. 5 is the sketch map of destressing heat-treating methods of the present invention.
The specific embodiment
The straightening method of nuclear power generating equipment steam generator of the present invention after with the conical shell heat treatment deformation; Use ten thousand tons of press (like 16500 tons of hydraulic presses); Be used for the steam generator that deforms through heat treatment is carried out school shape with the conical shell forging; Use the conical shell forging to be example with the AP1000 steam generator: the minimum dimension of conical shell is: to hold internal diameter greatly be
small end internal diameter is 18MND5 for the material of
conical shell; About 50 tons of weight requires the big end internal diameter of school shape conical shell afterwards to be
the monolateral 5mm of having surplus for
small end internal diameter;
May further comprise the steps:
The first step is measured the size of conical shell workpiece, and measurement size is carried out cue mark on workpiece;
Measuring method is:
The selected shaft section of the big end of workpiece (this shaft section is and measures the cross section), measure minimum and maximum " diameter " on this shaft section;
At the selected shaft section of the small end of workpiece, measure minimum and maximum " diameter " on this shaft section;
At the selected shaft section of the reducer of workpiece, measure minimum and maximum " diameter " on this shaft section;
Like Fig. 1, shown in Figure 2, present embodiment is selected the four measuring cross section, and each measures the selected four measuring point in cross section, and the measurement size of each measurement point is as shown in the table:
Can know from the distortion size; Small end size conforms delivery figure; Need not school shape; And it is bigger than delivery figure internal diameter to hold greatly that maximum is
, can't process.In order to ensure finishing size; Monolateral should staying is not less than 5mm allowance, and the internal diameter size of 1-3 measurement point should school shape to internal diameter
like this
Second step, utilize chopping block that the axis pad of workpiece is become level so that press depress direction perpendicular to conical shell axially; Workpiece is fixed along axis direction;
The 3rd step was placed on workpiece on the press, made the press hammering block aim at " diameter " maximum cross-section (the big end section that promptly needs school shape) of the measured big end of workpiece, and is as shown in Figure 3; Turning of work piece makes the deflection maximum (maximum " diameter " of promptly measuring the cross section is located, 1-3 measurement point among the figure) of school tee section be positioned at the below (over against the press hammering block) of press hammering block, implements school shape process;
School shape process is: slowly depress; Implement the process of depressing for the first time; For preventing to have little time to discharge owing to excessive velocities makes the stress of generation; Drafts is 120mm (this drafts produces the minimum of a value of plastic deformation for making surface of the work) for the first time, depresses the back and keeps lifting the press hammering block after 3～10 minutes, and this moment, conical shell partly rebounded; Wait to rebound and stablize the size that this place (1-3 measurement point) is measured in the back, recording for the first time, real drafts is 10mm; Owing to do not reach the requirement size; For the second time press is slowly depressed; Concrete size according to behind workpiece first anvil is confirmed secondary drafts; Secondary drafts is 100mm, depresses the back and keeps lifting the press hammering block after 3～10 minutes, measures once more; Recording secondary real drafts is 6mm, this moment 1-3 measurement point is of a size of
has satisfied delivery figure size.
Owing to the nuclear power product weighs greatly, can produce very big internal stress after depressing, if decontrol rapidly, workpiece can recover former state basically, can not produce appreciable results, the present invention keeps lifting the press hammering block again after 3～10 minutes after depressing, and can guarantee school shape effect.
The 4th step; Turning of work piece; Make the other end (promptly becoming the point of 180 degree on the tee section of school with described deflection maximum of the 3rd step) of school tee section be positioned at the below of press hammering block; Repeat school shape process, be tending towards positive circle until this cross section of workpiece, this shaft section size everywhere all satisfies delivery figure size and guarantees the machining allowance of the monolateral 5mm of being no less than in this optional position, cross section;
The 5th step if the small end of workpiece also needs school shape, made the press hammering block aim at " diameter " maximum cross-section (the little end section that promptly needs school shape) of measured workpiece small end, and is as shown in Figure 4; Turning of work piece makes the deflection maximum (maximum " diameter " of promptly measuring the cross section is located) of small end school tee section be positioned at the below of press hammering block, implements school shape process;
In the 6th step, carry out destressing heat treatment after the shape of school immediately;
Because the difference of deflection; The part cylindrical shell only plastic deformation occurs at surfaces externally and internally, is pining down the elastic region in cylindrical shell wall thickness centre by this part plastic deformation, so the cold conditions distortion of forging can make and itself has very big internal stress; This part stress must in time discharge; Do not carry out destressing heat treatment if park the long period after the shape of school, workpiece will produce and recover the preceding trend of school shape, and produce certain amount of recovery;
The destressing heat-treating methods is as shown in Figure 5, and workpiece is put into heat-treatment furnace, makes workpiece under 300～350 ℃ temperature, be incubated 2～4 hours, and the temperature that makes heat-treatment furnace then is warming up to 600 ± 20 ℃ with the speed of≤50 ℃/h, is incubated 2～6 hours; The temperature that then makes heat-treatment furnace is cooled to 350 ± 20 ℃ with the speed of≤50 ℃/h, and last air cooling is to room temperature;
The 7th step, after the destressing heat treatment, forging is carried out dimensional measurement once more, guarantee to satisfy fine finishining delivery figure size.
Claims (6)
1. the straightening method of a nuclear power generating equipment steam generator after with the conical shell heat treatment deformation is characterized in that: use ten thousand tons of press, the steam generator that deforms through heat treatment is carried out school shape with the conical shell forging, may further comprise the steps:
The first step is measured the size of conical shell workpiece, and measurement size is carried out cue mark on workpiece;
Second step became level with the axis pad of workpiece so that press depress direction perpendicular to conical shell axially; Workpiece is fixed along axis direction;
The 3rd step was placed on workpiece on the press, made press hammering block alignment pieces need the cross section of school shape; Turning of work piece makes the deflection maximum of school tee section be positioned at the below of press hammering block, implements school shape process;
The 4th step; Turning of work piece makes the other end of school tee section be positioned at the below of press hammering block, repeats school shape process; This cross section until workpiece is tending towards positive circle, and this shaft section size everywhere all satisfies the machining allowance of delivery figure size and the monolateral 5mm of being no less than in this optional position, cross section;
In the 5th step, carry out destressing heat treatment.
2. the straightening method of nuclear power generating equipment steam generator according to claim 1 after with the conical shell heat treatment deformation; It is characterized in that: the measuring method of the said first step is: at the selected shaft section of the big end of workpiece, measure minimum and maximum " diameter " on this shaft section;
And/or, measure minimum and maximum " diameter " on this shaft section at the selected shaft section of the small end of workpiece.
3. the straightening method of nuclear power generating equipment steam generator according to claim 1 after with the conical shell heat treatment deformation; It is characterized in that: the school shape process in said the 3rd step is: slowly depress; Implement to depress process for the first time, depress the back and keep lifting the press hammering block after 3～10 minutes; Wait to rebound and stablize the size that this place is measured in the back,, for the second time press is slowly depressed, depress the back maintenance and lift the press hammering block after 3～10 minutes, measure once more, meet the demands until size if do not meet the requirements of size.
4. the straightening method of nuclear power generating equipment steam generator according to claim 1 after with the conical shell heat treatment deformation is characterized in that: said first time, drafts was 120mm.
5. according to claim 1 or the 4 described nuclear power generating equipment steam generators straightening method after with the conical shell heat treatment deformation, it is characterized in that: said second time, drafts was not more than 120mm.
6. the straightening method of nuclear power generating equipment steam generator according to claim 1 after with the conical shell heat treatment deformation; It is characterized in that: said the 5th step destressing heat-treating methods is: workpiece is put into heat-treatment furnace; Make workpiece under 300～350 ℃ temperature, be incubated 2～4 hours; The temperature that makes heat-treatment furnace then is warming up to 600 ± 20 ℃ with the speed of≤50 ℃/h, is incubated 2～6 hours; The temperature that then makes heat-treatment furnace is cooled to 350 ± 20 ℃ with the speed of≤50 ℃/h, and last air cooling is to room temperature.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107716616A (en) * | 2017-10-11 | 2018-02-23 | 贾恒宏 | A kind of braking automobile adjustment arm arm body rod portion heat treatment deformation correction process |
| CN109702052A (en) * | 2019-01-02 | 2019-05-03 | 上海电气上重铸锻有限公司 | A kind of thin-wall barrel distortion correcting method and system |
| CN109702049A (en) * | 2017-10-26 | 2019-05-03 | 天津市东达伟业机车车辆有限公司 | A kind of alignment tooling of novel steel rail clamping plate |
| CN112453115A (en) * | 2020-11-09 | 2021-03-09 | 上海中船三井造船柴油机有限公司 | Mechanical cold pressing correction method for bending deformation connecting rod |
| CN117272552A (en) * | 2023-11-23 | 2023-12-22 | 中南大学 | Barrel thermal correction method and barrel thermal correction tool design method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5924529A (en) * | 1982-08-02 | 1984-02-08 | Kishimoto Akira | Correction of neck in part of can |
| EP0294628A2 (en) * | 1987-06-06 | 1988-12-14 | Westinghouse Electric Corporation | Process for heat treating a heat exchanger tube surrounded by a support plate |
| CN101049621A (en) * | 2007-05-16 | 2007-10-10 | 河南科隆石化装备有限公司 | Spinner |
| CN201217030Y (en) * | 2008-04-09 | 2009-04-08 | 赵文阁 | Double-curved surface forming lapping machine |
| CN101564750A (en) * | 2009-04-17 | 2009-10-28 | 二重集团（德阳）重型装备股份有限公司 | Process and device for forming straight-edge conical cylinder forged piece of nuclear power evaporator |
| CN101850397A (en) * | 2009-03-31 | 2010-10-06 | 上海重型机器锻件厂 | Forging method of large-scale circular cylinder body and three-point anvil adopted by same |
-
2011
- 2011-05-09 CN CN201110118171.0A patent/CN102773314B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5924529A (en) * | 1982-08-02 | 1984-02-08 | Kishimoto Akira | Correction of neck in part of can |
| EP0294628A2 (en) * | 1987-06-06 | 1988-12-14 | Westinghouse Electric Corporation | Process for heat treating a heat exchanger tube surrounded by a support plate |
| CN101049621A (en) * | 2007-05-16 | 2007-10-10 | 河南科隆石化装备有限公司 | Spinner |
| CN201217030Y (en) * | 2008-04-09 | 2009-04-08 | 赵文阁 | Double-curved surface forming lapping machine |
| CN101850397A (en) * | 2009-03-31 | 2010-10-06 | 上海重型机器锻件厂 | Forging method of large-scale circular cylinder body and three-point anvil adopted by same |
| CN101564750A (en) * | 2009-04-17 | 2009-10-28 | 二重集团（德阳）重型装备股份有限公司 | Process and device for forming straight-edge conical cylinder forged piece of nuclear power evaporator |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107716616A (en) * | 2017-10-11 | 2018-02-23 | 贾恒宏 | A kind of braking automobile adjustment arm arm body rod portion heat treatment deformation correction process |
| CN107716616B (en) * | 2017-10-11 | 2019-11-19 | 江苏强盛汽配制造有限公司 | A kind of braking automobile adjustment arm arm body rod portion heat treatment deformation correction process |
| CN109702049A (en) * | 2017-10-26 | 2019-05-03 | 天津市东达伟业机车车辆有限公司 | A kind of alignment tooling of novel steel rail clamping plate |
| CN109702052A (en) * | 2019-01-02 | 2019-05-03 | 上海电气上重铸锻有限公司 | A kind of thin-wall barrel distortion correcting method and system |
| CN112453115A (en) * | 2020-11-09 | 2021-03-09 | 上海中船三井造船柴油机有限公司 | Mechanical cold pressing correction method for bending deformation connecting rod |
| CN117272552A (en) * | 2023-11-23 | 2023-12-22 | 中南大学 | Barrel thermal correction method and barrel thermal correction tool design method |
| CN117272552B (en) * | 2023-11-23 | 2024-02-09 | 中南大学 | Barrel thermal correction method and barrel thermal correction tool design method |
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Effective date of registration: 20161125 Address after: 200245 Jiangchuan Road, Shanghai, No. 207, building 1800, No. Patentee after: Shanghai Electric Heavy Forging Co. Ltd. Patentee after: Shanghai Heavy Machines Plant Co., Ltd. Address before: 200245 Jiangchuan Road, Shanghai, No. 1800, No. Patentee before: Shanghai Heavy Machines Plant Co., Ltd. |