CN103801644A - Eccentric check reducer forging method - Google Patents
Eccentric check reducer forging method Download PDFInfo
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- CN103801644A CN103801644A CN201210451426.XA CN201210451426A CN103801644A CN 103801644 A CN103801644 A CN 103801644A CN 201210451426 A CN201210451426 A CN 201210451426A CN 103801644 A CN103801644 A CN 103801644A
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- forging
- pipe
- reducing
- reducer
- way eccentric
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Abstract
The invention belongs to the field of the metal forging technology, and particularly relates to an eccentric check reducer forging method. The method includes the following steps that (Step 1) a slope is turned on the front end of a pipe billet, and the slope angle Alpha is 5 to 13 degrees; (Step 2) glass lubricant is applied in the bore of the pipe billet, and the spraying range includes the shaped part and is extended backward for 15mm to 30mm; (Step 3) the coated pipe billet is heated, and the heating range includes the shaped part and is extended backward for 5mm to 10mm; (Step 4) a die with a guiding mechanism is used for forging on a horizontal forging machine, including: preforging: a semi-conical surface, of which the slope is smaller than 26 degrees, is first forged on the shaped orifice of the pipe billet; final forging: the shaped orifice of the pipe billet is then forged into an eccentric check reducer; (Step 5) the finally forged eccentric check reducer is put into an insulating box and slowly cooled.
Description
Technical field
The invention belongs to metal forging technical field, particularly relate to a kind of reducing one-way eccentric pipe forging method.
Background technology
Reducing one-way eccentric pipe is mainly used in petroleum pipeline interface, pressure pipeline interface etc., all adopts traditionally the method for casting to produce.Along with industrial expansion, need to adopt the high strength reducing one-way eccentric pipe that can bear high pressure, though increase casting eccentric pipe thickness approach and can meet the demands reluctantly but must bring waste of material, cost to improve and install not conveniently if adopted, forge reducing one-way eccentric pipe and just in time solved this difficult problem.
Summary of the invention
The object of the invention is:
The object of this invention is to provide reducing one-way eccentric pipe forging method.Material is structural alloy steel, adopts the method for local forging and molding to produce on sleeping forging machine.
Technical scheme of the present invention is:
A kind of reducing one-way eccentric pipe forging method, comprises the following steps:
The first step, goes out a gradient by pipe material front end car, and the size of draft angle a is 5 °-13 °;
Second step, is coated with glass lubricant to pipe material endoporus, and spraying scope is from moulding section and the 15-30MM that extends back;
The 3rd step, to the pipe blank heating after spraying, the scope of heating is moulding section and the 5-10MM that extends back;
The 4th step, is used with mould moulding on sleeping forging machine of guiding mechanism and forges, and comprising:
(1) blocking, first forging a gradient at pipe material molding port is the semicircle conical surface below 26 °;
(2) finish-forging, then pipe material molding port is forged into reducing one-way eccentric pipe;
The 5th step, puts into incubator Slow cooling by reducing one-way eccentric pipe good finish-forging.
Advantage of the present invention is:
The advantage of this method is: forge and adopt eddy-current heating effectively to avoid the distortion of eccentric pipe bar portion, oxidation and decarbonization, production efficiency high; Rationally base, accurately guiding has effectively been controlled eccentric pipe size and has been reached few and forged without burr, forging tissue, performance are qualified, qualification rate reaches 100%, forging process control is easy.
Accompanying drawing explanation
Fig. 1 is the reducing one-way eccentric pipe schematic diagram in the embodiment of the present invention.
Fig. 2 is reducing one-way eccentric pipe mouth of pipe schematic diagram of the present invention.
Fig. 3 is that pipe material front end car of the present invention goes out gradient schematic diagram, and a is draft angle.
The specific embodiment
Below the reducing one-way eccentric pipe take material as 40Cr be forged to example the present invention is described in further details:
As shown in Figure 1: this reducing one-way eccentric length of tube AD 560MM, moulding section BD 180MM, bar portion external diameter
internal diameter
the outer Kongzui large scale 178MM of moulding section, minimum dimension 109MM; Endoporus full-size 150MM, minimum dimension 53MM.
Reducing one-way eccentric pipe forging method, comprises the following steps:
The first step, goes out a gradient by pipe material front end car, and the size of draft angle a is 7 °;
Second step, is coated with glass lubricant to pipe material endoporus, and spraying scope is from moulding section and the 20MM that extends back;
The 3rd step, to the pipe blank heating after spraying, the scope of heating is moulding section and the 8MM that extends back;
1080 ℃ of heating-up temperatures, temperature retention time 0.5～2min.
The 4th step, is used with mould moulding on sleeping forging machine of guiding mechanism and forges, and comprising:
(1) blocking, first forging a gradient at pipe material molding port is the semicircle conical surface below 22 °;
(2) finish-forging, then pipe material molding port is forged into reducing one-way eccentric pipe;
The 5th step, puts into incubator Slow cooling by reducing one-way eccentric pipe good finish-forging.
Claims (2)
1. a reducing one-way eccentric pipe forging method, comprises the following steps:
The first step, goes out a gradient by pipe material front end car, and the size of draft angle a is 5 °-13 °;
Second step, is coated with glass lubricant to pipe material endoporus, and spraying scope is from moulding section and the 15-30MM that extends back;
The 3rd step, to the pipe blank heating after spraying, the scope of heating is moulding section and the 5-10MM that extends back;
The 4th step, is used with mould moulding on sleeping forging machine of guiding mechanism and forges, and comprising:
(1) blocking, first forging a gradient at pipe material molding port is the semicircle conical surface below 26 °;
(2) finish-forging, then pipe material molding port is forged into reducing one-way eccentric pipe;
The 5th step, puts into incubator Slow cooling by reducing one-way eccentric pipe good finish-forging.
2. a kind of reducing one-way eccentric pipe forging method as claimed in claim 1, is characterized in that, the reducing one-way eccentric pipe that is 40Cr for material, 1080 ℃ of heating-up temperatures in the 3rd described step, temperature retention time 0.5～2min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210451426.XA CN103801644A (en) | 2012-11-12 | 2012-11-12 | Eccentric check reducer forging method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210451426.XA CN103801644A (en) | 2012-11-12 | 2012-11-12 | Eccentric check reducer forging method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103801644A true CN103801644A (en) | 2014-05-21 |
Family
ID=50699307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210451426.XA Pending CN103801644A (en) | 2012-11-12 | 2012-11-12 | Eccentric check reducer forging method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103801644A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859802A (en) * | 2017-12-28 | 2018-03-30 | 江阴中南重工有限公司 | The elbow connection pipe part of monoblock type reduced pipe |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57187119A (en) * | 1981-05-15 | 1982-11-17 | Sato Koki:Kk | Method for eccentric contraction working of pipe |
| DE29803309U1 (en) * | 1998-02-25 | 1998-07-02 | Wf-Maschinenbau Und Blechformtechnik Gmbh & Co Kg, 48324 Sendenhorst | Metallic tubular body with areas of different diameters |
| CN1346719A (en) * | 2000-09-25 | 2002-05-01 | 日新制钢株式会社 | Method for making metal pipe with eccentric expanded open end |
| CN1487169A (en) * | 2003-07-18 | 2004-04-07 | 刘星海 | Eccentric reducing pipe and its production process |
| JP2004114147A (en) * | 2002-09-30 | 2004-04-15 | Sango Co Ltd | Method and device for reducing tube diameter |
| US20090139295A1 (en) * | 2007-11-30 | 2009-06-04 | Asteer Co., Ltd. | Method for manufacturing eccentrically expanded pipe |
| JP2009131880A (en) * | 2007-11-30 | 2009-06-18 | Asteer Co Ltd | Method of manufacturing eccentrically expanded pipe and concentric die |
| CN201997611U (en) * | 2011-03-17 | 2011-10-05 | 长春旭阳富维江森汽车座椅骨架有限责任公司 | Unequal-diameter beam pipe reducing stamping die |
-
2012
- 2012-11-12 CN CN201210451426.XA patent/CN103801644A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57187119A (en) * | 1981-05-15 | 1982-11-17 | Sato Koki:Kk | Method for eccentric contraction working of pipe |
| DE29803309U1 (en) * | 1998-02-25 | 1998-07-02 | Wf-Maschinenbau Und Blechformtechnik Gmbh & Co Kg, 48324 Sendenhorst | Metallic tubular body with areas of different diameters |
| CN1346719A (en) * | 2000-09-25 | 2002-05-01 | 日新制钢株式会社 | Method for making metal pipe with eccentric expanded open end |
| JP2004114147A (en) * | 2002-09-30 | 2004-04-15 | Sango Co Ltd | Method and device for reducing tube diameter |
| CN1487169A (en) * | 2003-07-18 | 2004-04-07 | 刘星海 | Eccentric reducing pipe and its production process |
| US20090139295A1 (en) * | 2007-11-30 | 2009-06-04 | Asteer Co., Ltd. | Method for manufacturing eccentrically expanded pipe |
| JP2009131880A (en) * | 2007-11-30 | 2009-06-18 | Asteer Co Ltd | Method of manufacturing eccentrically expanded pipe and concentric die |
| CN201997611U (en) * | 2011-03-17 | 2011-10-05 | 长春旭阳富维江森汽车座椅骨架有限责任公司 | Unequal-diameter beam pipe reducing stamping die |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859802A (en) * | 2017-12-28 | 2018-03-30 | 江阴中南重工有限公司 | The elbow connection pipe part of monoblock type reduced pipe |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140521 |