CN103357690A - Processing method for small R extrusion finishing elbow - Google Patents
Processing method for small R extrusion finishing elbow Download PDFInfo
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- CN103357690A CN103357690A CN2013103027285A CN201310302728A CN103357690A CN 103357690 A CN103357690 A CN 103357690A CN 2013103027285 A CN2013103027285 A CN 2013103027285A CN 201310302728 A CN201310302728 A CN 201310302728A CN 103357690 A CN103357690 A CN 103357690A
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Abstract
The invention discloses a processing method for a small R extrusion finishing elbow. The method includes: bending a steel pipe for the first time, conducting heating, and shifting it to a small R extrusion finishing machine, placing the left arm and right arm of the firstly bent steel pipe in a left extrusion die and a right extrusion die of an extrusion device respectively, and hooking the bent part of the firstly bent steel pipe on the nose hook of a back die; bringing the left extrusion die and the right extrusion die into slope sliding contact with the back die, diminishing the bending radius of the steel pipe by means of the relative extrusion movement of the left extrusion die and the right extrusion die, and pushing the back die backward simultaneously; when the left extrusion die and the right extrusion die are extruded in place, withdrawing the left extrusion die and the right extrusion die as well as the back die, and placing the steel pipe into a finishing die with a die cavity specification similar to that needed by the elbow to undergo finishing. The method provided in the invention effectively solves the necking mutation problem of the elbow and improves the quality of extrusion elbow. For a small R elbow with a relative bending radius of 0.6-0.8, multiple-channel extrusion finishing quality is superior to single-channel extrusion finishing quality.
Description
Technical field
The present invention relates to a kind of processing method of little R extruding finishing elbow.
Background technology
Existing little R extruding inner side of elbow is the goose egg type; Die body extruding elbow caliber contracting variate is definite value; Die body is fixed the compression deformation zone position; Extruding elbow demoulding difficulty behind the finishing procedure; The extruding inner side of elbow has projection; The transition of extruding elbow contracting modification face has protruding change; Pipe end is flat collapse not full; A plurality of extruding elbow linearitys are overproof; The finishing die body adopts corresponding backing plate according to extruding elbow parameter, installs loaded down with trivial details.It is large to push when curved the heating-up temperature scope.During practical operation, it is loaded down with trivial details that operative employee's die body is installed, and technological parameter is difficult the control, proofreaies and correct, the reconditioning workload is large.Outside tube wall draws obviously, and the elbow necking down has protruding change, and the elbow quality is unstable.
Summary of the invention
The object of the present invention is to provide a kind of rational in infrastructure, the processing method of the measured little R extruding of the elbow matter of being processed into finishing elbow.
Technical solution of the present invention is:
A kind of processing method of little R extruding finishing elbow, it is characterized in that: after the first bending of steel pipe, through heating (heating-up temperature in T ± 50 ℃ be advisable), be displaced to little R extruding finishing machine, the left and right arm of steel pipe after the first bending is placed on respectively in the left and right extrusion die of pressurizing unit, first crooked after steel pipe crooked position be hooked on the nose hook of back of the body mould; Left and right sides extrusion die is bevel sliding and contacts with back of the body mould, by the relative compressional movement of left and right sides extrusion die, the bending radius of steel pipe is diminished, and will carry on the back simultaneously mould and push the rear to; Left and right sides extrusion die is after extruding puts in place, and left and right sides extrusion die and back of the body mould withdraw from, and steel pipe is put into the die finish finishing identical with the required specification of elbow of die cavity specification.
Carrying out repeatedly the extruding of left and right sides mould and finishing processes.
Die body profile of the present invention transition is round and smooth.Efficiently solve elbow necking down sudden change problem, improved extruding elbow quality; Relative bending radius is at 0.6～0.8 little R elbow, and multiple tracks extruding finishing quality is better than single track extruding finishing quality.Reduce labor strength, save the dress mould time, cost efficiency.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1, Fig. 2, Fig. 3 are the different process schematic diagrames of one embodiment of the invention.
Fig. 4 is the structural representation of extrusion die.
Fig. 5 is the structural representation of back of the body mould.
Fig. 6 is the structural representation of die finish.
Fig. 1 is the steel tube clamping state; Fig. 2 is for pushing the state that puts in place; Fig. 3 is the finishing state.
The specific embodiment
A kind of processing method of little R extruding finishing elbow, after the first bending of steel pipe, through heating (heating-up temperature in T ± 50 ℃ be advisable), be displaced to little R extruding finishing machine, the left and right arm of steel pipe 1 after the first bending is placed on respectively in the left and right extrusion die 2,3 of pressurizing unit, first crooked after steel pipe crooked position be hooked on the nose hook (hamulus of bottom triangle tip) 5 of back of the body mould 4; Left and right sides extrusion die is bevel sliding and contacts with back of the body mould, by the relative compressional movement of left and right sides extrusion die, the bending radius of steel pipe is diminished, and will carry on the back simultaneously mould and push the rear to; Left and right sides extrusion die is after extruding puts in place, and left and right sides extrusion die and back of the body mould withdraw from, and steel pipe is put into the die finish finishing identical with the required specification of elbow of die cavity specification.
Can carry out repeatedly the extruding of left and right sides mould and finishing processes.
Claims (2)
1. the processing method of one kind little R extruding finishing elbow, it is characterized in that: after the first bending of steel pipe, through heating, be displaced to little R extruding finishing machine, the left and right arm of steel pipe after the first bending is placed on respectively in the left and right extrusion die of pressurizing unit, first crooked after steel pipe crooked position be hooked on the nose hook of back of the body mould; Left and right sides extrusion die is bevel sliding and contacts with back of the body mould, by the relative compressional movement of left and right sides extrusion die, the bending radius of steel pipe is diminished, and will carry on the back simultaneously mould and push the rear to; Left and right sides extrusion die is after extruding puts in place, and left and right sides extrusion die and back of the body mould withdraw from, and steel pipe is put into the die finish finishing identical with the required specification of elbow of die cavity specification.
2. the processing method of little R extruding finishing elbow according to claim 1 is characterized in that: carry out repeatedly the extruding of left and right sides mould and finishing and process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103027285A CN103357690A (en) | 2013-07-19 | 2013-07-19 | Processing method for small R extrusion finishing elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103027285A CN103357690A (en) | 2013-07-19 | 2013-07-19 | Processing method for small R extrusion finishing elbow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103357690A true CN103357690A (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103027285A Pending CN103357690A (en) | 2013-07-19 | 2013-07-19 | Processing method for small R extrusion finishing elbow |
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| CN (1) | CN103357690A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104438433A (en) * | 2014-10-31 | 2015-03-25 | 东方电气集团东方锅炉股份有限公司 | Manufacture process of thin-wall U-shaped bend pipe with small bending radius |
| CN109731964A (en) * | 2019-01-18 | 2019-05-10 | 北京中电华强焊接工程技术有限公司 | A kind of novel small R extrusion finishing machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003053432A (en) * | 2001-08-16 | 2003-02-26 | Akira Akaoka | Device and method for bending metallic pipe |
| CN1565767A (en) * | 2003-06-24 | 2005-01-19 | 上海四方锅炉厂 | Method for embowing pipe with small curvature radius |
| CN101049618A (en) * | 2007-05-11 | 2007-10-10 | 上海白云汽车制管有限公司 | Method and equipment for machining bent pipe with small R |
| CN101961733A (en) * | 2010-09-16 | 2011-02-02 | 浙江天兴管业有限公司 | Metal elbow cold extrusion molding method |
| CN102672016A (en) * | 2012-05-25 | 2012-09-19 | 上海锅炉厂有限公司 | Manufacturing method for U-shaped tubes with ultra-small bent radiuses |
-
2013
- 2013-07-19 CN CN2013103027285A patent/CN103357690A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003053432A (en) * | 2001-08-16 | 2003-02-26 | Akira Akaoka | Device and method for bending metallic pipe |
| CN1565767A (en) * | 2003-06-24 | 2005-01-19 | 上海四方锅炉厂 | Method for embowing pipe with small curvature radius |
| CN101049618A (en) * | 2007-05-11 | 2007-10-10 | 上海白云汽车制管有限公司 | Method and equipment for machining bent pipe with small R |
| CN101961733A (en) * | 2010-09-16 | 2011-02-02 | 浙江天兴管业有限公司 | Metal elbow cold extrusion molding method |
| CN102672016A (en) * | 2012-05-25 | 2012-09-19 | 上海锅炉厂有限公司 | Manufacturing method for U-shaped tubes with ultra-small bent radiuses |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104438433A (en) * | 2014-10-31 | 2015-03-25 | 东方电气集团东方锅炉股份有限公司 | Manufacture process of thin-wall U-shaped bend pipe with small bending radius |
| CN104438433B (en) * | 2014-10-31 | 2016-08-31 | 东方电气集团东方锅炉股份有限公司 | The processing technology of thin-walled small-bend radius U-bend |
| CN109731964A (en) * | 2019-01-18 | 2019-05-10 | 北京中电华强焊接工程技术有限公司 | A kind of novel small R extrusion finishing machine |
| CN109731964B (en) * | 2019-01-18 | 2024-05-28 | 北京中电华强焊接工程技术有限公司 | Novel little R extrusion finishing machine |
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Application publication date: 20131023 |