CN109175059A - Risen the method for processing groove inner liner stainless steel elbow using water - Google Patents
Risen the method for processing groove inner liner stainless steel elbow using water Download PDFInfo
- Publication number
- CN109175059A CN109175059A CN201811177938.5A CN201811177938A CN109175059A CN 109175059 A CN109175059 A CN 109175059A CN 201811177938 A CN201811177938 A CN 201811177938A CN 109175059 A CN109175059 A CN 109175059A
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- stainless steel
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- sample
- hydraulic pressure
- water flow
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Classifications
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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
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
-
- 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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/005—Incremental shaping or bending, e.g. stepwise moving a shaping tool along the surface of the workpiece
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Risen the method for processing groove inner liner stainless steel elbow (stainless steel is with a thickness of 0.3-0.5mm) the present invention provides a kind of using water; liner layer is protected by contrary water flow punching press; and it is gradually curved tubing by three-stage current scour; uniform stressed; preventing from bending suddenly causes liner layer damaged, greatly increases the service life of inner liner stainless steel pipe.The present invention also passes through many experiments and selects suitable parameter according to processed product difference, is suitble to the industrialized production of mass.
Description
Technical field
The present invention relates to composite water pipe field, specifically a kind of risen using water processes the side of groove inner liner stainless steel elbow
Method.
Background technique
Liner two-phase stainless steel composite steel pipe is in steel pipe inner wall thickness 0.35mm-0.5mm stainless steel tube, and this bimetallic is compound
Steel pipe greatly improves corrosion resistance of steel pipe during water delivery, defeated hot water, defeated coal gas, defeated natural gas, oil transportation, surface light
The advantages of sliding, fluid resistance is small, and remains steel pipe mechanical intensity height, and welding can be used, ditch mortise, be threadedly coupled, good airproof performance,
It overcomes that coating steel pipe is perishable, is gas transmission, water delivery, oil transportation using the defect of the plastic tube of hot-melt adhesive paste easy leak and aging
The ideal product of the upgrading of steel pipe.
Inner wall of the pipe forms one layer of very thin chromium oxide film internal lining pipe to liner two-phase stainless steel composite steel pipe in use,
The film prevents metal from continuing to aoxidize, therefore stainless steel has strong corrosion resistance, can not only bear the corrosion of water and air, and
And the corrosion of weak acid and weak base can be born.
Current stainless steel bend usually carries out heating bending and 2 butt welding to straight tube between 1mm-3mm due to thickness
Molding, for liner two-phase stainless steel composite steel pipe, since the stainless steel of liner is usually than relatively thin 0.3-0.5mm, direct bending or
Heating, welding are easy to cause the breakage of inner liner stainless steel pipe to cause product development to fail.
Summary of the invention
The present invention in order to solve problems in the prior art, is provided and a kind of is risen that process groove inner liner stainless steel curved using water
The method of head, protects liner layer by contrary water flow punching press, and make tubing by three-stage current scour
It is gradually curved, uniform stressed, preventing from bending suddenly causes liner layer damaged, greatly increases the service life of inner liner stainless steel pipe.
The present invention provides a kind of methods for being risen using water and processing groove inner liner stainless steel elbow, comprising the following steps:
1) several inner liner stainless steel pipes to be processed are chosen as sample, the mould of the standby corresponding size of elbow Circular measure as needed
Tool；
2) sample is inserted in mold, is passed through high pressure water flow from one end of mold to the other end, is passed through in the sample contrary
High pressure water flow, hydraulic pressure be mold in hydraulic pressure half；
3) to the hydraulic pressure being passed through in more mold exchange, step 2 is repeated, several groups sample is detected, it is best to choose detection performance
Sample, recording its hydraulic pressure used is 1P, records the sample and bend the time completely as t；
4) take out sample, choose steel pipe to be processed, be inserted in mold, from one end of mold to being passed through high pressure water flow, preceding t/3 when
Between to be passed through the hydraulic pressure of water flow be 1.25P, the hydraulic pressure that the time of intermediate t/3 is passed through water flow is 1P, and the time of last t/3 is passed through water flow
Hydraulic pressure be 0.75P, be passed through in the sample contrary, elbow is prepared in the water flow of constant 0.5P hydraulic pressure；
5) step 4) is repeated, prepared by batch.
It is further improved, the internal diameter of inner liner stainless steel pipe described in step 1) is 80-300mm stainless steel with a thickness of 0.3-
0.5mm.Internal diameter is too small to be easy to cause inner lining damage, and the internal diameter excessive welding processing time is too long, and production cost is excessively high, and weld seam is more,
The weldquality hidden danger of welding is larger, economic benefit highest when processing internal diameter is the tubing of 80-300mm.
The beneficial effects of the invention are that:
1, liner layer is protected by contrary water flow punching press, and tubing is made gradually by three-stage current scour
Bending, uniform stressed, preventing from bending suddenly causes liner layer damaged, greatly increases the service life of inner liner stainless steel pipe.
2, suitable parameter is selected according to processed product difference by many experiments, is suitble to the industrialized life of mass
It produces.
Specific embodiment
The invention will be further described With reference to embodiment.
The present invention provides a kind of methods for being risen using water and processing groove inner liner stainless steel elbow, comprising the following steps:
1) several inner liner stainless steel pipes to be processed are chosen as sample, the mould of the standby corresponding size of elbow Circular measure as needed
Tool；
2) sample is inserted in mold, is passed through high pressure water flow from one end of mold to the other end, is passed through in the sample contrary
High pressure water flow, hydraulic pressure be mold in hydraulic pressure half；
3) to the hydraulic pressure being passed through in more mold exchange, step 2 is repeated, several groups sample is detected, it is best to choose detection performance
Sample, recording its hydraulic pressure used is 1P, records the sample and bend the time completely as t；
4) take out sample, choose steel pipe to be processed, be inserted in mold, from one end of mold to being passed through high pressure water flow, preceding t/3 when
Between to be passed through the hydraulic pressure of water flow be 1.25P, the hydraulic pressure that the time of intermediate t/3 is passed through water flow is 1P, and the time of last t/3 is passed through water flow
Hydraulic pressure be 0.75P, be passed through in the sample contrary, elbow is prepared in the water flow of constant 0.5P hydraulic pressure；
5) step 4) is repeated, prepared by batch.
It is further improved, the internal diameter of inner liner stainless steel pipe described in step 1) is 80-300mm.Internal diameter is too small to be easy to cause
Inner lining damage, internal diameter excessive process time is too long, and production cost is excessively high, economic benefit when processing internal diameter is the tubing of 80-300mm
Highest.
There are many concrete application approach of the present invention, the above is only a preferred embodiment of the present invention, it is noted that for
For those skilled in the art, without departing from the principle of the present invention, it can also make several improvements, this
A little improve also should be regarded as protection scope of the present invention.
Claims (2)
1. a kind of method for processing groove thickness 0.35mm-0.5mm inner liner stainless steel elbow that risen using water, it is characterised in that packet
Include following steps:
1) several inner liner stainless steel pipes to be processed are chosen as sample, the mould of the standby corresponding size of elbow Circular measure as needed
Tool；
2) sample is inserted in mold, is passed through high pressure water flow from one end of mold to the other end, is passed through in the sample contrary
High pressure water flow, hydraulic pressure be mold in hydraulic pressure half；
3) to the hydraulic pressure being passed through in more mold exchange, step 2 is repeated, several groups sample is detected, it is best to choose detection performance
Sample, recording its hydraulic pressure used is 1P, records the sample and bend the time completely as t；
4) take out sample, choose steel pipe to be processed, be inserted in mold, from one end of mold to being passed through high pressure water flow, preceding t/3 when
Between to be passed through the hydraulic pressure of water flow be 1.25P, the hydraulic pressure that the time of intermediate t/3 is passed through water flow is 1P, and the time of last t/3 is passed through water flow
Hydraulic pressure be 0.75P, be passed through in the sample contrary, elbow is prepared in the water flow of constant 0.5P hydraulic pressure；
5) step 4) is repeated, prepared by batch.
2. the method according to claim 1 that process groove inner liner stainless steel elbow that risen using water, it is characterised in that: step
It is rapid 1) described in inner liner stainless steel pipe internal diameter be 80-300mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811177938.5A CN109175059B (en) | 2018-10-10 | 2018-10-10 | Method for processing stainless steel elbow with lining for groove by water expansion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811177938.5A CN109175059B (en) | 2018-10-10 | 2018-10-10 | Method for processing stainless steel elbow with lining for groove by water expansion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109175059A true CN109175059A (en) | 2019-01-11 |
| CN109175059B CN109175059B (en) | 2020-04-07 |
Family
ID=64947706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811177938.5A Active CN109175059B (en) | 2018-10-10 | 2018-10-10 | Method for processing stainless steel elbow with lining for groove by water expansion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109175059B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112025219A (en) * | 2020-08-27 | 2020-12-04 | 江苏新阳光管业科技有限公司 | Method for processing stainless steel elbow lined with stainless steel for wire connection by utilizing ductility of stainless steel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5735156A (en) * | 1994-09-20 | 1998-04-07 | Hitachi, Ltd. | Method and apparatus for forming a non-circular pipe |
| JP2000246361A (en) * | 1999-03-02 | 2000-09-12 | F Tech:Kk | Hydroforming method of pipe material |
| CN101318205A (en) * | 2008-06-24 | 2008-12-10 | 南京航空航天大学 | Circumferential nature supercharging plate liquid filling deep-drawing forming method and apparatus |
| CN103920789A (en) * | 2014-05-06 | 2014-07-16 | 哈尔滨工业大学 | Internal high pressure forming die and method of elbow T-branch pipe |
| CN106734340A (en) * | 2015-11-23 | 2017-05-31 | 宁波思明汽车科技股份有限公司 | A kind of preparation method of bend pipe three-way pipe |
| CN207266986U (en) * | 2017-09-27 | 2018-04-24 | 浙江海卓利克液压科技有限公司 | Hydraulic-bend molding machine |
-
2018
- 2018-10-10 CN CN201811177938.5A patent/CN109175059B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5735156A (en) * | 1994-09-20 | 1998-04-07 | Hitachi, Ltd. | Method and apparatus for forming a non-circular pipe |
| JP2000246361A (en) * | 1999-03-02 | 2000-09-12 | F Tech:Kk | Hydroforming method of pipe material |
| CN101318205A (en) * | 2008-06-24 | 2008-12-10 | 南京航空航天大学 | Circumferential nature supercharging plate liquid filling deep-drawing forming method and apparatus |
| CN103920789A (en) * | 2014-05-06 | 2014-07-16 | 哈尔滨工业大学 | Internal high pressure forming die and method of elbow T-branch pipe |
| CN106734340A (en) * | 2015-11-23 | 2017-05-31 | 宁波思明汽车科技股份有限公司 | A kind of preparation method of bend pipe three-way pipe |
| CN207266986U (en) * | 2017-09-27 | 2018-04-24 | 浙江海卓利克液压科技有限公司 | Hydraulic-bend molding machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112025219A (en) * | 2020-08-27 | 2020-12-04 | 江苏新阳光管业科技有限公司 | Method for processing stainless steel elbow lined with stainless steel for wire connection by utilizing ductility of stainless steel |
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| Publication number | Publication date |
|---|---|
| CN109175059B (en) | 2020-04-07 |
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