CN110496874A - A kind of nuclear power zirconium alloy cladding pipe method for aligning - Google Patents
A kind of nuclear power zirconium alloy cladding pipe method for aligning Download PDFInfo
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- CN110496874A CN110496874A CN201910829908.6A CN201910829908A CN110496874A CN 110496874 A CN110496874 A CN 110496874A CN 201910829908 A CN201910829908 A CN 201910829908A CN 110496874 A CN110496874 A CN 110496874A
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- straightening
- roll
- zirconium alloy
- aligning
- alloy cladding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
- B21D3/02—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers
- B21D3/04—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes skew to the path of the work
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Abstract
The present invention provides a kind of nuclear power zirconium alloy cladding pipe method for aligning, belong to nuclear power cladding tubes manufacturing technology field.Nuclear power zirconium alloy cladding pipe method for aligning, including following seven steps: obtaining the dimensional parameters of zirconium alloy cladding pipe；Selected roller system of straightening machine structure；Select the straightening roll angle of five straightening rolls；Calculate aligning lead；Calculate straightening roll spacing；Straightening roll is chosen to be installed；Straightening work is implemented to zirconium alloy cladding pipe.The invention realizes that pure bending no pressure cross roll is aligned by using the roll system structure of five roller of alternating expression.
Description
Technical field
The invention belongs to nuclear power cladding tubes manufacturing technology fields, and in particular to a kind of nuclear power zirconium alloy cladding pipe
Method for aligning.
Background technique
Zirconium alloy cladding pipe is usually small-caliber thin-walled tube, in flaw detection requirement, surface defect inspection, straight degree, outer diameter, wall
The various aspects such as thickness, roughness have extremely stringent regulation.At the same time, zirconium alloy cladding pipe can be during military service constantly
Inhale hydrogen, and inhale hydrogen embrittlement the extent of injury and hydride orientation factor it is closely related.So hydride orientation factor also must be tight
Lattice control.In zirconium alloy cladding pipe production process, straightening process has a significant impact to hydride orientation factor.Zirconium alloy cladding
In the straightening process of pipe in addition to requiring pipe directly to spend and meet standard requirements, it is necessary to ensure that hydride orientation factor is met the requirements.
In the prior art, often using to roller method for aligning, such as three group of six roller aligning.In addition to there is amount of deflection parameter in this method
Outside, there are also pressure parameters.Pipe also receives radial straightening force effect other than stress by bending.Using this method, pipe
Sub- leveling effect is good, at the same also have full circle effect, but the hydride for needing to control in zirconium alloy cladding pipe orientation because
Son is very unfavorable.
There is a kind of zirconium alloy tube high-precision method for aligning in the prior art, this method uses three sections of iso-curvature anti-bending rolls
Shape, the roll system structure of three group of six roller.It by roll contour design, realizes and reaches well-distributed pressure state in roll gap, to reduce strong
Straight power avoids hydride orientation factor exceeded.However, the method for aligning is applied with straightening force on zirconium alloy pipe surface, belonging to has
Gag press straightening scope clamps pipe by up-down rollers and is bent again.When clamping, pipe is easily deformed, and generates stress, and stress is to lead
The hydride orientation factor key factor that improves and deteriorate is caused, so method is for the hydrogenation that needs to control in zirconium alloy cladding pipe
Object orientation factor is very unfavorable.
Summary of the invention
The purpose of the invention is to overcome above-mentioned the deficiencies in the prior art, it is strong to provide a kind of nuclear power zirconium alloy cladding pipe
Histogram method, ensure pipe directly spend meet standard requirements while, can more effectively reduce hydride orientation factor, avoid hydrogen
Compound orientation factor is exceeded.
In order to achieve the above objectives, the present invention adopts the following technical scheme:
A kind of nuclear power zirconium alloy cladding pipe method for aligning, includes the following steps:
Step 1: obtaining the dimensional parameters of zirconium alloy cladding pipe:
The dimensional parameters of the zirconium alloy cladding pipe include the outer diameter and wall thickness of zirconium alloy cladding pipe to be aligned；
Step 2: selected roller system of straightening machine structure:
The roller system of straightening machine structure uses the roll system structure of five roller of alternating expression；The roll system structure packet of five roller of alternating expression
Five straightening rolls are included, five straightening rolls are divided into three upper straightening rolls and two lower straightening rolls；Five straightening rolls are
Power roller and linear velocity is all the same；
Step 3: selecting the straightening roll angle of five straightening rolls；
Step 4: calculating aligning lead:
According to the step 1 outer diameter acquired into step 3 and straightening roll angle, five alignings are calculated separately
The aligning lead of roller, calculation formula are L=π dtan α, wherein L is aligning lead, i.e. a certain phase of zirconium alloy cladding pipe exists
Roll gap inner-spiral type rotates a circle as an aligning lead, and π is pi, and d is the outer diameter, and α is the straightening roll angle；
Step 5: calculating straightening roll spacing:
Five straightening rolls use spaced set, four times of straightening roll spacing not less than the aligning lead；
It is installed Step 6: choosing straightening roll:
Five straightening rolls are all made of hyperbola roller shape；It selectes and is calculated to step 5 according to the step 1
Roller system of straightening machine structure, straightening roll angle and straightening roll spacing, five straightening rolls are installed to corresponding on straightener
Position；
Step 7: implementing straightening work to zirconium alloy cladding pipe.
Further, in the step 2, five straightening rolls provide power by same motor, and the motor passes through transfer
Case carries out power distribution, and the linear velocity for ensuring five straightening rolls is identical, and the linear velocity range of straightening roll is 0.4~
0.5m/s。
Further, the arc radius of three upper straightening rolls is 60~100mm, and roll centre diameter is 50~80mm.
Further, the arc radius of described two lower straightening rolls is 100~150mm, and roll centre diameter is 70~100mm.
Further, the straightening roll angle of five straightening rolls is adjustable, and straightening roll angle of regulation range is 0~45 °
And it is continuously adjustable.
Further, three upper straightening rolls being capable of up and down adjustment roll gap distance, i.e. adjusting amount of deflection.
Further, the straightening roll angle of described two lower straightening rolls is identical, and straightening roll angular range is 34~38 °.
Further, the straightening roll angle of three upper straightening rolls is successively passed from straightener inlet end to straightener outlet end
Increase, straightening roll angular range is 30~38 °, and increment is 2~3 °.
Further, in three upper straightening rolls, centrally located upper straightening roll generates the amount of deflection for being not more than 5mm,
Other two upper straightening roll does not generate amount of deflection.
Compared with prior art, beneficial effects of the present invention:
A kind of nuclear power provided by the invention is with the roller system that zirconium alloy cladding pipe method for aligning is by using five roller of alternating expression
Structure come realize pure bending no pressure cross roll align.The roll system structure of five roller of alternating expression includes rectifying under three upper straightening rolls and two
Straight roller is interspersed between straightening roll, does not generate straightening force, and only upper straightening roll is combined with lower straightening roll provides bending deflection, uses
It is aligned in zirconium alloy cladding pipe recurvation.Spaced set, and four of straightening roll spacing not less than aligning lead are used between straightening roll
Times, the bending stress of tube surfaces when this design can reduce recurvation aligning.In the process design of zirconium alloy cladding pipe,
Stress relief annealing process is not present after aligning, so method for aligning provided by the present invention, can substantially reduce pipe in aligning
The deformation in sublist face and thus caused stress, so that effectively control hydride orientation factor is horizontal, this is for zircaloy packet
The control of package final product quality is very crucial.
Detailed description of the invention
Fig. 1 is a kind of roller tying of five roller of alternating expression of nuclear power zirconium alloy cladding pipe method for aligning described in the invention
The structural schematic diagram of structure.
Fig. 2 is a kind of process flow chart of nuclear power zirconium alloy cladding pipe method for aligning described in the invention.
Description of symbols:
It include zirconium alloy cladding pipe 1 in Fig. 1, upper straightening roll 2, lower straightening roll 3.
Specific embodiment
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail.
It please refers to shown in Figure of description 1 and attached drawing 2, the present invention provides a kind of nuclear power zirconium alloy cladding pipe aligning sides
Method includes the following steps:
S1, the dimensional parameters for obtaining zirconium alloy cladding pipe 1:
The dimensional parameters of the zirconium alloy cladding pipe 1 include the outer diameter and wall thickness of zirconium alloy cladding pipe 1 to be aligned.This reality
It applies in example, selects Φ 9.5mm × 0.5mmM5 zirconium alloy cladding pipe 1, i.e. outer diameter 9.5mm, wall thickness 0.5mm.
S2, selected roller system of straightening machine structure:
The roller system of straightening machine structure uses the roll system structure of five roller of alternating expression；The roll system structure packet of five roller of alternating expression
Five straightening rolls are included, five straightening rolls are divided into three upper straightening rolls 2 and two lower straightening rolls 3；Five straightening rolls are equal
For power roller and linear velocity it is all the same.
S3, the straightening roll angle for selecting five straightening rolls.
In the present embodiment, 34 ° of straightening roll angle average out to is selected.
S4, aligning lead is calculated:
According to the step 1 outer diameter acquired into step 3 and straightening roll angle, five alignings are calculated separately
The aligning lead of roller, calculation formula are L=π dtan α, wherein L is aligning lead, i.e. a certain phase of zirconium alloy cladding pipe 1 exists
Roll gap inner-spiral type rotates a circle as an aligning lead, and π is pi, and d is the outer diameter, and α is the straightening roll angle.
In the present embodiment, according to step 1 to step 3 it is found that α=34, d=9.5, can be calculated L=20.12mm.
S5, straightening roll spacing is calculated:
Five straightening rolls use spaced set, four times of straightening roll spacing not less than the aligning lead.This reality
It applies in example, the aligning lead L calculated result is 20.12mm, therefore choosing straightening roll spacing is 100mm.
S6, selection straightening roll are installed:
Five straightening rolls are all made of hyperbola roller shape；It selectes and is calculated to step 5 according to the step 1
Roller system of straightening machine structure, straightening roll angle and straightening roll spacing, five straightening rolls are installed to corresponding on straightener
Position.
S7, straightening work is implemented to zirconium alloy cladding pipe 1.
As preferred and non-limiting, in the step 2, five straightening rolls provide power, the electricity by same motor
Machine carries out power distribution by transfer case, and the linear velocity for ensuring five straightening rolls is identical, the linear velocity model of straightening roll
It encloses for 0.4~0.5m/s.
As preferred and non-limiting, the arc radius of three upper straightening rolls 2 is 60~100mm, and roll centre diameter is 50
~80mm.In the present embodiment, the arc radius of upper straightening roll 2 is set as 80mm, and roll centre diameter is set as 60mm.
As preferred and non-limiting, the arc radius of described two lower straightening rolls 3 is 100~150mm, and roll centre diameter is 70
~100mm.In the present embodiment, the arc radius of lower straightening roll 3 is set as 120mm, and roll centre diameter is set as 90mm.
As preferred and non-limiting, the straightening roll angle of five straightening rolls is adjustable, straightening roll angular adjustment model
It encloses for 0~45 ° and continuously adjustable.
As preferred and non-limiting, three upper straightening rolls 2 being capable of up and down adjustment roll gap distance, i.e. adjusting amount of deflection.
As preferred and non-limiting, the straightening roll angle of described two lower straightening rolls 3 is identical, and straightening roll angular range is 34
~38 °.
As preferred and non-limiting, the straightening roll angle of three upper straightening rolls 2 is from straightener inlet end to straightener
Outlet end is incremented by successively, and straightening roll angular range is 30~38 °, and increment is 2~3 °.
As preferred and non-limiting, in three upper straightening rolls 2, centrally located upper straightening roll 2 is generated less
In the amount of deflection of 5mm, other two upper straightening roll 2 does not generate amount of deflection.
Above specific embodiment is only the preferred embodiment of this creation, all in this wound not to limit this creation
Any modification, equivalent substitution, improvement and etc. done within the spirit and principle of work, should be included in this creation protection scope it
It is interior.
Claims (9)
1. a kind of nuclear power zirconium alloy cladding pipe method for aligning, which comprises the steps of:
Step 1: obtaining the dimensional parameters of zirconium alloy cladding pipe:
The dimensional parameters of the zirconium alloy cladding pipe include the outer diameter and wall thickness of zirconium alloy cladding pipe to be aligned；
Step 2: selected roller system of straightening machine structure:
The roller system of straightening machine structure uses the roll system structure of five roller of alternating expression；The roll system structure of five roller of alternating expression includes five
A straightening roll, five straightening rolls are divided into three upper straightening rolls and two lower straightening rolls；Five straightening rolls are power
Roller and linear velocity is all the same；
Step 3: selecting the straightening roll angle of five straightening rolls；
Step 4: calculating aligning lead:
According to the step 1 outer diameter acquired into step 3 and straightening roll angle, five straightening rolls are calculated separately
Lead is aligned, calculation formula is L=π dtan α, wherein L is aligning lead, i.e., a certain phase of zirconium alloy cladding pipe is in roll gap
Inner-spiral type rotates a circle as an aligning lead, and π is pi, and d is the outer diameter, and α is the straightening roll angle；
Step 5: calculating straightening roll spacing:
Five straightening rolls use spaced set, four times of straightening roll spacing not less than the aligning lead；
It is installed Step 6: choosing straightening roll:
Five straightening rolls are all made of hyperbola roller shape；It is rectified according to what the step 1 was selected and was calculated to step 5
Straight machine roll system structure, straightening roll angle and straightening roll spacing, are installed to the corresponding position on straightener for five straightening rolls；
Step 7: implementing straightening work to zirconium alloy cladding pipe.
2. a kind of nuclear power according to claim 1 zirconium alloy cladding pipe method for aligning, it is characterised in that: the step 2
In, five straightening rolls provide power by same motor, and the motor carries out power distribution by transfer case, for ensuring
The linear velocity for stating five straightening rolls is identical, and the linear velocity range of straightening roll is 0.4 ~ 0.5m/s.
3. a kind of nuclear power according to claim 1 zirconium alloy cladding pipe method for aligning, it is characterised in that: on described three
The arc radius of straightening roll is 60 ~ 100mm, and roll centre diameter is 50 ~ 80mm.
4. a kind of nuclear power according to claim 1 zirconium alloy cladding pipe method for aligning, it is characterised in that: under described two
The arc radius of straightening roll is 100 ~ 150mm, and roll centre diameter is 70 ~ 100mm.
5. a kind of nuclear power according to claim 1 zirconium alloy cladding pipe method for aligning, it is characterised in that: described five are rectified
The straightening roll angle of straight roller is adjustable, and straightening roll angle of regulation range is 45 ° of 0 ~ and is continuously adjusted.
6. a kind of nuclear power according to claim 1 zirconium alloy cladding pipe method for aligning, it is characterised in that: on described three
Straightening roll being capable of up and down adjustment roll gap distance, i.e. adjusting amount of deflection.
7. a kind of nuclear power according to claim 1 zirconium alloy cladding pipe method for aligning, it is characterised in that: under described two
The straightening roll angle of straightening roll is identical, and straightening roll angular range is 38 ° of 34 ~.
8. a kind of nuclear power according to claim 1 zirconium alloy cladding pipe method for aligning, it is characterised in that: on described three
The straightening roll angle of straightening roll is incremented by successively from straightener inlet end to straightener outlet end, and straightening roll angular range is 30 ~
38 °, increment is 3 ° of 2 ~.
9. a kind of nuclear power according to claim 1 zirconium alloy cladding pipe method for aligning, it is characterised in that: on described three
In straightening roll, centrally located upper straightening roll generates the amount of deflection for being not more than 5mm, other two upper straightening roll, which does not generate, scratches
Degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910829908.6A CN110496874A (en) | 2019-09-03 | 2019-09-03 | A kind of nuclear power zirconium alloy cladding pipe method for aligning |
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| CN201910829908.6A CN110496874A (en) | 2019-09-03 | 2019-09-03 | A kind of nuclear power zirconium alloy cladding pipe method for aligning |
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Cited By (2)
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| CN111014351A (en) * | 2019-12-17 | 2020-04-17 | 无锡隆达金属材料有限公司 | Method for controlling yield strength of nickel tube by multi-inclined-roller straightening |
| CN112044987A (en) * | 2020-10-15 | 2020-12-08 | 浙江金洲管道科技股份有限公司 | Straightening device for eliminating cold bending stress of small-caliber welded pipe |
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| CN111014351A (en) * | 2019-12-17 | 2020-04-17 | 无锡隆达金属材料有限公司 | Method for controlling yield strength of nickel tube by multi-inclined-roller straightening |
| CN111014351B (en) * | 2019-12-17 | 2021-07-30 | 江苏隆达超合金股份有限公司 | Method for controlling yield strength of nickel tube by multi-inclined-roller straightening |
| CN112044987A (en) * | 2020-10-15 | 2020-12-08 | 浙江金洲管道科技股份有限公司 | Straightening device for eliminating cold bending stress of small-caliber welded pipe |
| CN112044987B (en) * | 2020-10-15 | 2022-04-26 | 浙江金洲管道科技股份有限公司 | Straightening device for eliminating cold bending stress of small-caliber welded pipe |
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Application publication date: 20191126 |