CN102401195A - Stainless steel reducing pipe and machining method thereof - Google Patents

Stainless steel reducing pipe and machining method thereof Download PDF

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Publication number
CN102401195A
CN102401195A CN201010282710XA CN201010282710A CN102401195A CN 102401195 A CN102401195 A CN 102401195A CN 201010282710X A CN201010282710X A CN 201010282710XA CN 201010282710 A CN201010282710 A CN 201010282710A CN 102401195 A CN102401195 A CN 102401195A
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CN
China
Prior art keywords
pipe
stainless steel
tube main
steel tube
shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201010282710XA
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Chinese (zh)
Inventor
缪冬俊
缪东印
朱平风
徐芳娟
陈俊祥
夏逸之
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU HANSEN STAINLESS STEEL CO LTD
Original Assignee
JIANGSU HANSEN STAINLESS STEEL CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JIANGSU HANSEN STAINLESS STEEL CO LTD filed Critical JIANGSU HANSEN STAINLESS STEEL CO LTD
Priority to CN201010282710XA priority Critical patent/CN102401195A/en
Publication of CN102401195A publication Critical patent/CN102401195A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a stainless steel reducing pipe and a machining method thereof. The stainless steel pipe main body is a bent pipe or a straight pipe, and consists of an end pipe, a pipe body and a transition section between the end pipe and the pipe body; the end pipe, the pipe body and the transition section form a whole; and the inside diameter and the outside diameter of the end pipe are respectively greater than those of the pipe body. The machining method for the stainless steel reducing pipe comprises the following steps of: putting the stainless steel pipe main body into a female die, performing cold extrusion expansion on the port of the end pipe by using the male die, and forming the end pipe, the transition section and the pipe body of the stainless steel pipe main body, wherein the male die is a cylinder, the head of which is provided with a cone. The stainless steel reducing pipe has simple structure, does not need to be provided with threads at the connected end, does not need a joint, is firm in connection, good in sealing effect and convenient to weld, and can meet the requirement of connecting dense pipelines.

Description

Stainless steel reducer pipe and processing method thereof
Technical field
The present invention relates to a kind of Stainless Steel Tube, relate in particular to and be convenient to the stainless steel reducer pipe that the different tube diameters pipeline connects.
Background technique
Pipe connecting component is of a great variety in the market, connects to use pipe joint, and the joint that wherein is used for two pipelines turning connections generally is an angle coupling; Just must use two joints in the correct connection of turning of needs, not only loaded down with trivial details, and take bigger space; Can not be applied in the pipeline intensive occasion or structure; Disclose a kind of U-shaped pipe joint like Chinese patent CN2729489, comprised the tubular body of U-shaped, be equipped with connection interface at its two ends.The pipe fitting that metallic material is processed; Its connecting end generally is that worm structure or clamp-press type connect; The worm structure deficiency be pipe fitting with pipeline between be connected inconvenient; The sheet-metal duct that particularly has makes the tube wall of this connecting end become thinner after its connecting end is provided with screw thread, and the joint that causes connecting ruptures easily; The connecting end of clamp-press type connecting tube need not established screw thread; But sealing effect is bad; Be prone to leak, disclose a kind of clamp-press type pipe fitting, comprise the pipe fitting body like Chinese patent CN2658522; The inner tube wall of said pipe fitting connecting end is no screw thread inwall, and the mode of pressing for card between said pipe fitting connecting end and the pipeline is connected.
Summary of the invention
The object of the invention just provide a kind of simple in structure, connecting end need not to be provided with screw thread, need not to use joint, and be connected firmly, good sealing effect, stainless steel reducer pipe easy to connect.
Technological scheme of the present invention is:
The stainless steel reducer pipe; Comprise the Stainless Steel Tube main body; Described Stainless Steel Tube main body is bend pipe or straight tube; Described Stainless Steel Tube main body is made up of end pipe, pipe shaft and the changeover portion between them, and described end pipe, pipe shaft and changeover portion are an integral body, and the internal diameter of described end pipe and external diameter are respectively greater than the internal diameter and the external diameter of pipe shaft.
Described Stainless Steel Tube main body is the U-shaped pipe.
Described Stainless Steel Tube main body is an asymmetric body.
Described Stainless Steel Tube main body is a symmetric body.
The end bore and the pipe shaft external diameter of described Stainless Steel Tube main body are complementary.
Stainless steel reducer pipe processing method places die with the Stainless Steel Tube main body, utilizes the port cold hobbing hole enlargement of punch opposite end pipe, forms end pipe, changeover portion and the pipe shaft of Stainless Steel Tube main body, and described punch is the cylindrical body that head has cone.
The present invention is processed by stainless steel, and the Stainless Steel Tube main body is made up of end pipe, pipe shaft and the changeover portion between them, and described end pipe, pipe shaft and changeover portion are an integral body; The end pipe is formed through the extruding hole enlargement by the pipe shaft part, and described Stainless Steel Tube main body is bend pipe or straight tube, can connect the external connecting tube of different tube diameters, length; Connect that butt welding is used for the intensive occasion of pipeline or structure is very convenient; Simple in structure, occupy little space, and be connected firmly, good sealing effect; When especially the Stainless Steel Tube main body is the U-shaped pipe, can satisfy the needs that intensive pipeline is turned and connected.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one;
Fig. 2 is the structural representation of the embodiment of the invention two;
Fig. 3 is the structural representation of the embodiment of the invention three;
Fig. 4 is the structural representation of the embodiment of the invention four.
Sequence number among the figure: 1, Stainless Steel Tube main body, 2, pipe end, 3, pipe shaft, 4, changeover portion.
Embodiment
Embodiment one: referring to Fig. 1; A kind of stainless steel reducer pipe comprises Stainless Steel Tube main body 1, and described Stainless Steel Tube main body 1 is the U-shaped pipe; Described Stainless Steel Tube main body 1 is made up of end pipe 2, pipe shaft 3 and the changeover portion between them 4; Described end pipe 2, pipe shaft 3 and changeover portion 4 are an integral body, and described Stainless Steel Tube main body 1 is a symmetric body, and the internal diameter of described end pipe 2 and external diameter are respectively greater than the internal diameter and the external diameter of pipe shaft 3; The end of described Stainless Steel Tube main body 1 manages 2 internal diameters and pipe shaft 3 external diameters are complementary, welding in external connecting tube insertion end pipe 2 pipes of being convenient to equate with pipe shaft 3 external diameters.Its processing method: Stainless Steel Tube main body 1U shape pipe is placed die, utilize the port cold hobbing hole enlargement of punch opposite end pipe 2, form end pipe 2, changeover portion 4 and the pipe shaft 3 of Stainless Steel Tube main body 1U shape pipe, described punch is the cylindrical body that head has cone.
Embodiment two: referring to Fig. 2; A kind of stainless steel reducer pipe; Comprise Stainless Steel Tube main body 1, described Stainless Steel Tube main body 1 is a straight tube, and described Stainless Steel Tube main body 1 is made up of end pipe 2, pipe shaft 3 and the changeover portion between them 4; Described end pipe 2, pipe shaft 3 and changeover portion 4 are an integral body; Greater than the internal diameter and the external diameter of pipe shaft 3, the end of described Stainless Steel Tube main body 1 manages 2 internal diameters and pipe shaft 3 external diameters are complementary respectively for the internal diameter of described end pipe 2 and external diameter, welding in external connecting tube insertion end pipe 2 pipes of being convenient to equate with pipe shaft 3 external diameters.Its processing method: Stainless Steel Tube main body 1 straight tube is placed die, utilize the port cold hobbing hole enlargement of punch opposite end pipe 2, form end pipe 2, changeover portion 4 and the pipe shaft 3 of Stainless Steel Tube main body 1 straight tube, described punch is the cylindrical body that head has cone.
Embodiment three: referring to Fig. 3; A kind of stainless steel reducer pipe; Comprise Stainless Steel Tube main body 1, described Stainless Steel Tube main body 1 is a bend pipe, and described Stainless Steel Tube main body 1 is made up of end pipe 2, pipe shaft 3 and the changeover portion between them 4; Described end pipe 2, pipe shaft 3 and changeover portion 4 are an integral body; Greater than the internal diameter and the external diameter of pipe shaft 3, the end of described Stainless Steel Tube main body 1 manages 2 internal diameters and pipe shaft 3 external diameters are complementary respectively for the internal diameter of described end pipe 2 and external diameter, welding in external connecting tube insertion end pipe 2 pipes of being convenient to equate with pipe shaft 3 external diameters.Its processing method: Stainless Steel Tube main body 1 bend pipe is placed die, utilize the port cold hobbing hole enlargement of punch opposite end pipe 2, form end pipe 2, changeover portion 4 and the pipe shaft 3 of Stainless Steel Tube main body 1 bend pipe, described punch is the cylindrical body that head has cone.
Embodiment four: referring to Fig. 4; A kind of stainless steel reducer pipe comprises Stainless Steel Tube main body 1, and described Stainless Steel Tube main body 1 is the U-shaped pipe; Described Stainless Steel Tube main body 1 is made up of end pipe 2, pipe shaft 3 and the changeover portion between them 4; Described end pipe 2, pipe shaft 3 and changeover portion 4 are an integral body, and Stainless Steel Tube main body 1 is an asymmetric body, and the inside and outside footpath of the two ends pipe 2 of described Stainless Steel Tube main body 1 is unequal; The two ends pipe 2 of described Stainless Steel Tube main body 1 does not wait high; Greater than the internal diameter and the external diameter of pipe shaft 3, the two ends of described Stainless Steel Tube main body 1 are managed 2 internal diameters and are complementary with external connecting tube external diameter respectively respectively for the internal diameter of described end pipe 2 and external diameter, are convenient to welding in external connecting tube insertion end pipe 2 pipes.Its processing method: Stainless Steel Tube main body 1U shape pipe is placed die, utilize the port cold hobbing hole enlargement of punch opposite end pipe 2, form end pipe 2, changeover portion 4 and the pipe shaft 3 of Stainless Steel Tube main body 1U shape pipe, described punch is the cylindrical body that head has cone.
Embodiment is just for the ease of understanding technological scheme of the present invention; Do not constitute restriction to protection domain of the present invention; Every interior any simple modification, equivalent variations and modification of perhaps according to technical spirit of the present invention above scheme being done that does not break away from technological scheme of the present invention all still belongs within the protection domain of the present invention.

Claims (6)

1. stainless steel reducer pipe; Comprise Stainless Steel Tube main body (1); Described Stainless Steel Tube main body (1) is bend pipe or straight tube; It is characterized in that: described Stainless Steel Tube main body (1) is made up of end pipe (2), pipe shaft (3) and the changeover portion between them (4), and described end pipe (2), pipe shaft (3) and changeover portion (4) are an integral body, and the internal diameter of described end pipe (2) and external diameter are respectively greater than the internal diameter and the external diameter of pipe shaft (3).
2. stainless steel reducer pipe according to claim 1 is characterized in that: described Stainless Steel Tube main body (1) is the U-shaped pipe.
3. stainless steel reducer pipe according to claim 2 is characterized in that: described Stainless Steel Tube main body (1) is an asymmetric body.
4. stainless steel reducer pipe according to claim 2 is characterized in that: described Stainless Steel Tube main body (1) is a symmetric body.
5. according to claim 1,2,3 or 4 described stainless steel reducer pipes, it is characterized in that: end pipe (2) internal diameter and the pipe shaft external diameter (3) of described Stainless Steel Tube main body (1) are complementary.
6. stainless steel reducer pipe processing method; It is characterized in that: Stainless Steel Tube main body (1) is placed die; Utilize the port cold hobbing hole enlargement of punch opposite end pipe (2); Form end pipe (2), changeover portion (4) and the pipe shaft (3) of Stainless Steel Tube main body (1), described punch is the cylindrical body that head has cone.
CN201010282710XA 2010-09-16 2010-09-16 Stainless steel reducing pipe and machining method thereof Pending CN102401195A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201010282710XA CN102401195A (en) 2010-09-16 2010-09-16 Stainless steel reducing pipe and machining method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201010282710XA CN102401195A (en) 2010-09-16 2010-09-16 Stainless steel reducing pipe and machining method thereof

Publications (1)

Publication Number Publication Date
CN102401195A true CN102401195A (en) 2012-04-04

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CN201010282710XA Pending CN102401195A (en) 2010-09-16 2010-09-16 Stainless steel reducing pipe and machining method thereof

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103742730A (en) * 2013-12-31 2014-04-23 左铁军 Diameter-expanding different-diameter corrugated connecting pipe and production method thereof
CN106374183A (en) * 2016-09-23 2017-02-01 浙江申吉钛业股份有限公司 Apparatus and method for preparing flange bent waveguide tube by forward cold extrusion method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2265467Y (en) * 1996-12-24 1997-10-22 徐国相 Bend for gas pipe through room
CN2342208Y (en) * 1998-07-13 1999-10-06 于道生 Slender thin wall metal variable diameter pipe for refrigerating circulation system
GB2390125A (en) * 2002-06-28 2003-12-31 Nakajima Steel Pipe Co Ltd A welded joint construction for a steel pipe column
CN101712108A (en) * 2009-11-17 2010-05-26 周安 Method for manufacturing conical riser of direction column of motorcycle by adopting cold extrusion process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2265467Y (en) * 1996-12-24 1997-10-22 徐国相 Bend for gas pipe through room
CN2342208Y (en) * 1998-07-13 1999-10-06 于道生 Slender thin wall metal variable diameter pipe for refrigerating circulation system
GB2390125A (en) * 2002-06-28 2003-12-31 Nakajima Steel Pipe Co Ltd A welded joint construction for a steel pipe column
CN101712108A (en) * 2009-11-17 2010-05-26 周安 Method for manufacturing conical riser of direction column of motorcycle by adopting cold extrusion process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103742730A (en) * 2013-12-31 2014-04-23 左铁军 Diameter-expanding different-diameter corrugated connecting pipe and production method thereof
CN106374183A (en) * 2016-09-23 2017-02-01 浙江申吉钛业股份有限公司 Apparatus and method for preparing flange bent waveguide tube by forward cold extrusion method

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Application publication date: 20120404