CN105478551A - Metal thin-walled tube cold-bending processing filler and application method thereof - Google Patents

Metal thin-walled tube cold-bending processing filler and application method thereof Download PDF

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Publication number
CN105478551A
CN105478551A CN201510812469.XA CN201510812469A CN105478551A CN 105478551 A CN105478551 A CN 105478551A CN 201510812469 A CN201510812469 A CN 201510812469A CN 105478551 A CN105478551 A CN 105478551A
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China
Prior art keywords
sodium
thin
filler
metal pipe
wall metal
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CN201510812469.XA
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CN105478551B (en
Inventor
于正洋
张春刚
王敬
康军卫
周静
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AECC Shenyang Liming Aero Engine Co Ltd
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Shenyang Liming Aero Engine Group Co Ltd
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Classifications

    • 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
    • B21D9/00—Bending tubes using mandrels or the like
    • B21D9/01—Bending tubes using mandrels or the like the mandrel being flexible and engaging the entire tube length

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

The invention relates to a filler, particularly to a metal thin-walled tube cold-bending processing filler and an application method thereof. The technical scheme lies in that the metal thin-walled tube cold-bending processing filler comprises the following components by mass percent: 70%-90% of sodium hydrogen phosphate, 10%-30% of sodium dihydrogen phosphate, 0%-20% of sodium phosphate, 0%-10% of sodium carbonate and a trace amount of talcum powder. According to the metal thin-walled tube cold-bending processing filler and the application method thereof provided by the invention, the metal thin-walled tube cold-bending processing filler is applicable to metal thin-walled tube cold-bending processing, the state of a bent section is not influenced, and the quality of cold-bending processing is guaranteed.

Description

A kind of thin-wall metal pipe clod wash prepared filler and application process thereof
Technical field
The present invention relates to a kind of filler, be specifically related to a kind of thin-wall metal pipe clod wash prepared filler and application process thereof.
Background technology
Along with the development of aircraft industry technology, the application of metal pipe material is more and more extensive, and wall thickness is also more and more thinner, and bending process many employings clod wash processing of metal pipe material, it is simple that it has processing technology, and process time is short, low cost and other advantages.But after clod wash processing, it longitudinally will produce residual stress and overstrain, and wall thickness, internal-and external diameter can change.In bending pipes process, due to by tangential stress effect, can there is wall thickness reduction phenomenon, if seriously thinning, can cause breaking in outside; Inner side, by circumferential compressive force effect, causes wall thickness to increase, when deformation extent is excessive, can cause wrinkling; In bending section, on outboard tube wall, axial stress is under the force action of outside tangential stress and inner side circumferential compressive force, and the pipe cross section pressurized of bending section deformed area and produce distortion, namely bending section ovality increases large.Rational inside to fill when (as putting into filler or plug) will make tubing clod wash that tube wall is stressed to tend to balance, and reduces tube wall buckling deformation, the ovality of reduction bend loss and degree of folding.
Metal pipe material clod wash prepared filler mostly is the fillers such as rosin, is applicable to internal diameter large, the material of thickness of pipe wall, as large in elbow curvature distortion, internal diameter is little, during the thin bending pipes of tube wall, very easily produce distortion, produce gauffer, ovality, in addition rosin filler filling and remove complex process.
Summary of the invention
The invention provides a kind of thin-wall metal pipe clod wash prepared filler and application process thereof, the clod wash of suitable metal light-wall pipe is processed, and does not damage the state of bending section, ensures clod wash crudy.
Technical scheme of the present invention is as follows:
A kind of thin-wall metal pipe clod wash prepared filler, be made up of sodium hydrogen phosphate, sodium dihydrogen phosphate, sodium phosphate, sodium carbonate and talcum powder, wherein mass percent is, sodium hydrogen phosphate: sodium dihydrogen phosphate: sodium phosphate: sodium carbonate: talcum powder=70% ~ 90%:10% ~ 30%:0% ~ 20%:0% ~ 10%: trace.
Described thin-wall metal pipe clod wash prepared filler, its preferred version is, described sodium hydrogen phosphate is made up of disodium hydrogen phosphate dodecahydrate, seven hypophosphite monohydrate disodium hydrogens and/or two hypophosphite monohydrate disodium hydrogens.
Described thin-wall metal pipe clod wash prepared filler, its preferred version is, described sodium dihydrogen phosphate is made up of a hypophosphite monohydrate sodium dihydrogen and/or two hypophosphite monohydrate sodium dihydrogens.
Described thin-wall metal pipe clod wash prepared filler, its preferred version is, described sodium phosphate is made up of sodium phosphate dodecahydrate and/or ten hypophosphite monohydrate sodium.
Described thin-wall metal pipe clod wash prepared filler, its preferred version is, described sodium carbonate is made up of sal soda, seven hydrated sodium carbonates and/or crystal carbonate.
The application process of above-mentioned thin-wall metal pipe clod wash prepared filler, comprises the steps:
One, each component of described filler is inserted in proportion in preparation still, fully after mixing, heat 90 ~ 110 DEG C, and sealing thermal insulation makes its abundant melting;
Two, the filler after melting is added in thin-wall metal pipe to be bent, thin-wall metal pipe and filler are cooled to room temperature, after the complete crystallization of filler, carry out thin-wall metal pipe with general elbow equipment and bend;
Three, after thin-wall metal pipe brake forming, thin-wall metal pipe is immersed in 80 ~ 100 DEG C of hot water storgaes, filler is dissolved completely, take out tubing, rinse well with circulating water, use contractive pressure air blow drying.
Beneficial effect of the present invention is as follows: filler of the present invention can make the flexural deformation of thin-wall metal pipe effective, and distortion position not easily produces gauffer, ovality; Bending process is simple, can one-shot forming; Filler is easy to remove, and the aqueous solution can be adopted to remove.
Detailed description of the invention
Embodiment 1:
Measure seven hypophosphite monohydrate disodium hydrogen (the molecular formula Na that mass ratio is 80% 2hPO 412H 2o), 10% 2 hypophosphite monohydrate sodium dihydrogen (molecular formula NaH 2pO 42H 2o), sodium phosphate dodecahydrate (the molecular formula Na of 10% 3pO 412H 2o); Put into preparation still, fully after mixing, be heated to 100 DEG C, after melting, constant temperature keeps 30min, ensures the abundant melting of filler, and heating and thermostatic process should keep moisture not run off; Flowed into by filler in tubing to be bent, curved material two ends should be filled up, and talcum powder are applied to tubing inner chamber, increase the lubrication of tubing; By tubing air cooling to room temperature, fully cool, adopt bending machine to carry out bending pipes.
Embodiment 2:
Measuring mass ratio is 70% disodium hydrogen phosphate dodecahydrate (molecular formula Na 2hPO 412H 2o), 20% 2 hypophosphite monohydrate sodium dihydrogen (molecular formula NaH 2pO 42H 2o), 5% sodium phosphate dodecahydrate (molecular formula Na 3pO 412H 2o), 5% crystal carbonate (molecular formula Na 3cO 31H 2o); Put into preparation still, fully after mixing, be heated to 105 DEG C, after melting, constant temperature keeps 30min, ensures the abundant melting of filler, and heating and thermostatic process should keep moisture not run off; Flowed into by filler in tubing to be bent, curved material two ends should be filled up, and talcum powder are applied to tubing inner chamber, increase the lubrication of tubing; By tubing air cooling to room temperature, fully cool, adopt bending machine to carry out bending pipes.
Embodiment 3:
Measure seven hypophosphite monohydrate disodium hydrogen (the molecular formula Na that mass ratio is 70% 2hPO 47H 2o), 10% 2 hypophosphite monohydrate sodium dihydrogen (molecular formula NaH 2pO 42H 2o), sodium phosphate dodecahydrate (the molecular formula Na of 15% 3pO 412H 2o), 5% crystal carbonate (molecular formula Na 3cO 31H 2o); Put into preparation still, fully after mixing, be heated to 100 DEG C, after filler melting, constant temperature keeps 30min, ensures the abundant melting of filler, and heating and thermostatic process should keep moisture not run off; Flowed into by filler in tubing to be bent, curved material two ends should be filled up; By tubing air cooling to room temperature, fully cool, adopt bending machine to carry out bending pipes.
Take specification as Φ 5 × 0.3mm high temperature alloy GH648 tubing be example, there is not fold in bending pipes place, knee ovality is less than 1mm.

Claims (6)

1. a thin-wall metal pipe clod wash prepared filler, it is characterized in that, be made up of sodium hydrogen phosphate, sodium dihydrogen phosphate, sodium phosphate, sodium carbonate and talcum powder, wherein mass percent is, sodium hydrogen phosphate: sodium dihydrogen phosphate: sodium phosphate: sodium carbonate: talcum powder=70% ~ 90%:10% ~ 30%:0% ~ 20%:0% ~ 10%: trace.
2. thin-wall metal pipe clod wash prepared filler according to claim 1, is characterized in that, described sodium hydrogen phosphate is made up of disodium hydrogen phosphate dodecahydrate, seven hypophosphite monohydrate disodium hydrogens and/or two hypophosphite monohydrate disodium hydrogens.
3. thin-wall metal pipe clod wash prepared filler according to claim 1, is characterized in that, described sodium dihydrogen phosphate is made up of a hypophosphite monohydrate sodium dihydrogen and/or two hypophosphite monohydrate sodium dihydrogens.
4. thin-wall metal pipe clod wash prepared filler according to claim 1, is characterized in that, described sodium phosphate is made up of sodium phosphate dodecahydrate and/or ten hypophosphite monohydrate sodium.
5. thin-wall metal pipe clod wash prepared filler according to claim 1, is characterized in that, described sodium carbonate is made up of sal soda, seven hydrated sodium carbonates and/or crystal carbonate.
6. an application process for the thin-wall metal pipe clod wash prepared filler as described in one of Claims 1 to 5, is characterized in that, comprise the steps:
One, each component of described filler is inserted in proportion in preparation still, fully after mixing, heat 90 ~ 110 DEG C, and sealing thermal insulation makes its abundant melting;
Two, the filler after melting is added in thin-wall metal pipe to be bent, thin-wall metal pipe and filler are cooled to room temperature, after the complete crystallization of filler, carry out thin-wall metal pipe with general elbow equipment and bend;
Three, after thin-wall metal pipe brake forming, thin-wall metal pipe is immersed in 80 ~ 100 DEG C of hot water storgaes, filler is dissolved completely, take out tubing, rinse well with circulating water, use contractive pressure air blow drying.
CN201510812469.XA 2015-11-20 2015-11-20 A kind of thin-wall metal pipe clod wash prepared filler and its application process Active CN105478551B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109070170A (en) * 2016-07-12 2018-12-21 三菱重工业株式会社 The manufacturing method and plug of tubing
CN110814124A (en) * 2019-11-28 2020-02-21 中国航发沈阳黎明航空发动机有限责任公司 Use method of anhydrous disodium hydrogen phosphate as conduit bending filler

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62224429A (en) * 1986-03-24 1987-10-02 Kuroki Kogyosho:Kk Bending method for metal hollow body
CN1082951A (en) * 1993-08-21 1994-03-02 冶金工业部钢铁研究总院 The bending method of metal tube
CN101054506A (en) * 2007-04-12 2007-10-17 沈阳华铁异型材有限公司 Airplane engine fuel oil total pipe bend filling and technique
CN101058708A (en) * 2007-04-12 2007-10-24 沈阳华铁异型材有限公司 Airplane engine heat exchanger guiding-tube bend filling and technique
CN103331347A (en) * 2013-06-24 2013-10-02 重庆建设摩托车股份有限公司 Flexible bending method for metal pipe fitting
CN103567265A (en) * 2012-07-24 2014-02-12 贵州红林机械有限公司 Method for using urea as oil pump guide pipe bending filler

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62224429A (en) * 1986-03-24 1987-10-02 Kuroki Kogyosho:Kk Bending method for metal hollow body
CN1082951A (en) * 1993-08-21 1994-03-02 冶金工业部钢铁研究总院 The bending method of metal tube
CN101054506A (en) * 2007-04-12 2007-10-17 沈阳华铁异型材有限公司 Airplane engine fuel oil total pipe bend filling and technique
CN101058708A (en) * 2007-04-12 2007-10-24 沈阳华铁异型材有限公司 Airplane engine heat exchanger guiding-tube bend filling and technique
CN103567265A (en) * 2012-07-24 2014-02-12 贵州红林机械有限公司 Method for using urea as oil pump guide pipe bending filler
CN103331347A (en) * 2013-06-24 2013-10-02 重庆建设摩托车股份有限公司 Flexible bending method for metal pipe fitting

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109070170A (en) * 2016-07-12 2018-12-21 三菱重工业株式会社 The manufacturing method and plug of tubing
US11167335B2 (en) 2016-07-12 2021-11-09 Mitsubishi Heavy Industries, Ltd. Method for producing pipe material
CN110814124A (en) * 2019-11-28 2020-02-21 中国航发沈阳黎明航空发动机有限责任公司 Use method of anhydrous disodium hydrogen phosphate as conduit bending filler

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Address after: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6

Patentee after: Chinese Hangfa Shenyang Liming Aero engine limited liability company

Address before: 110043 Dong TA street, Dadong District, Shenyang, Liaoning Province, No. 6

Patentee before: Liming Aeroplane Engine (Group) Co., Ltd., Shenyang City