CN107984766A - A kind of direct production method of reducing - Google Patents
A kind of direct production method of reducing Download PDFInfo
- Publication number
- CN107984766A CN107984766A CN201711192753.7A CN201711192753A CN107984766A CN 107984766 A CN107984766 A CN 107984766A CN 201711192753 A CN201711192753 A CN 201711192753A CN 107984766 A CN107984766 A CN 107984766A
- Authority
- CN
- China
- Prior art keywords
- tube
- small diameter
- diameter
- bar
- production method
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
- B29C65/0672—Spin welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/14—Copolymers of polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/06—PVC, i.e. polyvinylchloride
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The present invention relates to a kind of direct production method of reducing, by large-diameter pipe and the after-applied pressure of small diameter tube alignment, rotation small diameter tube is so that the contact site of large-diameter pipe and small diameter tube melts at a high speed, large-diameter pipe and small diameter tube are linked together after fusing, two bar-shaped metal objects in pipe ensure that fusing material does not flow at the same time, adhere on the inner wall of two large-diameter pipes and small diameter tube, the horn mouth of metal tube front end to form a tapering transition face at this, the reducing obtained using the production method of the present invention is directly connected to intensity height, good airproof performance and junction surfacing.
Description
Technical field
The present invention relates to a kind of direct production method of reducing, belong to the production technical field of conduit fittings.
Background technology
As the term suggests reducing is directly exactly pipeline of the both ends open diameter difference for two different-diameters of connection, bag
Include the bigger diameter end and miner diameter end to link together.Directly manufacture is generally divided into directly casting and welding (bonding, welding) to reducing
Two methods, can produce bubble so as to reduce bonding strength at welding (bonding, welding) position in usual welding process, weld at the same time
Connecing (bonding, welding) surface irregularity causes also to need surface treatment step.
The content of the invention
The present invention is in order to solve the above technical problems, a kind of bonding strength is high, the reducing of surfacing is direct so as to provide
Welding production method.
The technical solution adopted by the present invention to solve the technical problems is：
The present invention provides a kind of direct production method of reducing, comprises the following steps：
It will be stretched into the matched first bar-shaped metal object of major diameter bore in large-diameter pipe；
It will be stretched into the matched second bar-shaped metal object of path bore in small diameter tube, being set to one end in small diameter tube overcoat opens
It is resisted against equipped with metal tube horn mouth one end in bell-mouthed metal tube, is made on large-diameter pipe；
Fixed large-diameter pipe, makes large-diameter pipe be arranged concentrically with small diameter tube, and applies pressure to small diameter tube；
Small diameter tube rotation is driven, rotating speed turns/min for 400-450, and the indent for controlling two small diameter tubes is 8-10mm；Rotation
Stop operating after turning 4-8 minutes；
It is to be cooled to after room temperature, extract metal tube, the first bar-shaped metal object and the second bar-shaped metal object out successively.
Preferably, the direct production method of reducing of the invention, the first bar-shaped metal object and/or the second bar-shaped metal
The outer surface of thing is coated with lubricant.
Preferably, the direct production method of reducing of the invention, is coated with lubricant on the inner wall of the metal tube.
Preferably, the direct production method of reducing of the invention, the pressure are 1000Pa-2000Pa.
Preferably, the direct production method of reducing of the invention, the large-diameter pipe and the surface of small diameter tube contact portion are thick
Rugosity is Ra2.5-3.
Preferably, the direct production method of reducing of the invention, the first bar-shaped metal object or the second bar-shaped metal object
For solid or hollow metal stick.
Preferably, the direct production method of reducing of the invention, the bell-mouthed maximum inner diameter are equal to the outer of large-diameter pipe
Footpath.
The beneficial effects of the invention are as follows：
The direct production method of reducing of the present invention, large-diameter pipe and the after-applied pressure of small diameter tube alignment rotate at a high speed small
Footpath is managed so that the fusing of the contact site of large-diameter pipe and small diameter tube, links together large-diameter pipe and small diameter tube after fusing, at the same time
Two bar-shaped metal objects in pipe ensure that fusing material does not flow into, adheres to the inner wall of two large-diameter pipes and small diameter tube
On, the horn mouth of metal tube front end to form a tapering transition face at this, the reducing obtained using the production method of the present invention
It is directly connected to high intensity, good airproof performance and junction surfacing.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is direct structure diagram in the prior art；
Reference numeral in figure is：
1- large-diameter pipes；2- small diameter tubes；The first bar-shaped metal objects of 3-；The second bar-shaped metal objects of 4-；5- metal tubes.
Embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates the basic structure of the present invention, therefore it only shows composition related to the present invention.
Embodiment 1
The present embodiment provides a kind of direct production method of reducing, comprise the following steps：
The smooth large-diameter pipe 1 and 2 contact portion of small diameter tube, and control surface roughness is Ra2.5-3；
It will be stretched into the matched first bar-shaped metal object 3 of 1 internal diameter of large-diameter pipe in large-diameter pipe 1, the first bar-shaped metal object 3
Lubricant is coated with the outer surface of the second bar-shaped metal object 4；
It will be stretched into the matched second bar-shaped metal object 4 of 2 internal diameter of small diameter tube in small diameter tube 2, one is set in 2 overcoat of small diameter tube
End offer in bell-mouthed metal tube 5,5 horn mouth one end of metal tube is resisted against on large-diameter pipe 1, the metal tube 5 it is interior
Lubricant is coated with wall, the bell-mouthed preferable maximum inner diameter is equal to the outside diameter of large-diameter pipe 1；
Fixed large-diameter pipe 1, makes large-diameter pipe 1 be arranged concentrically with small diameter tube 2, and applies pressure to small diameter tube 2, and pressure is
2000Pa；
Driving small diameter tube 2 rotates, and rotating speed is 400 turns/min, and the indent for controlling two small diameter tubes 2 is 10mm；8 points of rotation
Stop operating after clock；
It is to be cooled to after room temperature, extract metal tube 5, the first bar-shaped 3 and second bar-shaped metal object 4 of metal object out successively.
Embodiment 2
The present embodiment provides a kind of direct production method of reducing, comprise the following steps：
The smooth large-diameter pipe 1 and 2 contact portion of small diameter tube, and control surface roughness is Ra2.5-3；
It will be stretched into the matched first bar-shaped metal object 3 of 1 internal diameter of large-diameter pipe in large-diameter pipe 1, the first bar-shaped metal object 3
Lubricant is coated with the outer surface of the second bar-shaped metal object 4；
It will be stretched into the matched second bar-shaped metal object 4 of 2 internal diameter of small diameter tube in small diameter tube 2, one is set in 2 overcoat of small diameter tube
End is offered in bell-mouthed metal tube 5, and lubricant is coated with the inner wall of the metal tube 5, described bell-mouthed preferable
Maximum inner diameter is equal to the outside diameter of large-diameter pipe 1；
Fixed large-diameter pipe 1, makes large-diameter pipe 1 be arranged concentrically with small diameter tube 2,5 horn mouth one end of metal tube is resisted against major diameter
On pipe 1, and apply pressure, pressure 1500Pa to small diameter tube 2；
Driving small diameter tube 2 rotates, and rotating speed is 420 turns/min, and the indent for controlling two small diameter tubes 2 is 9mm；6 points of rotation
Stop operating after clock；
It is to be cooled to after room temperature, extract metal tube 5, the first bar-shaped 3 and second bar-shaped metal object 4 of metal object out successively.
Embodiment 3
The present embodiment provides a kind of direct production method of reducing, comprise the following steps：
The smooth large-diameter pipe 1 and 2 contact portion of small diameter tube, and control surface roughness is Ra2.5-3；
It will be stretched into the matched first bar-shaped metal object 3 of 1 internal diameter of large-diameter pipe in large-diameter pipe 1, the first bar-shaped metal object 3
Lubricant is coated with the outer surface of the second bar-shaped metal object 4；
It will be stretched into the matched second bar-shaped metal object 4 of 2 internal diameter of small diameter tube in small diameter tube 2, one is set in 2 overcoat of small diameter tube
End is offered in bell-mouthed metal tube 5, and lubricant is coated with the inner wall of the metal tube 5, described bell-mouthed preferable
Maximum inner diameter is equal to the outside diameter of large-diameter pipe 1；
Fixed large-diameter pipe 1, makes large-diameter pipe 1 be arranged concentrically with small diameter tube 2,5 horn mouth one end of metal tube is resisted against major diameter
On pipe 1, and apply pressure, pressure 2000Pa to small diameter tube 2；
Driving small diameter tube 2 rotates, and rotating speed is 400 turns/min, and the indent for controlling two small diameter tubes 2 is 10mm；8 points of rotation
Stop operating after clock；
It is to be cooled to after room temperature, extract metal tube 5, the first bar-shaped 3 and second bar-shaped metal object 4 of metal object out successively.
In embodiment 1-3, the first bar-shaped bar-shaped metal object 4 of metal object 3 or the second is solid or hollow metal stick.
The direct production method of reducing of above-described embodiment, large-diameter pipe 1 and small diameter tube 2 are PVC or PPR materials, by major diameter
Pipe 1 and small diameter tube 2 align after-applied pressure, rotate small diameter tube 2 at a high speed so that the contact site of large-diameter pipe 1 and small diameter tube 2 melts
Change, large-diameter pipe 1 and small diameter tube 2 link together after fusing, while two bar-shaped metal objects in pipe ensure that fusing
Material is not flowed into, adhered on the inner wall of two large-diameter pipes 1 and small diameter tube 2, and the horn mouth of 5 front end of metal tube causes shape at this
Into a tapering transition face, the reducing obtained using the production method of above-described embodiment is directly connected to high intensity, good airproof performance and company
Connect place's surfacing.
It is complete by above-mentioned description, relevant staff using the above-mentioned desirable embodiment according to the present invention as enlightenment
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property scope is not limited to the content on specification, it is necessary to determines its technical scope according to right.
Claims (7)
1. a kind of direct production method of reducing, it is characterised in that comprise the following steps：
It will be stretched into the matched first bar-shaped metal object (3) of large-diameter pipe (1) internal diameter in large-diameter pipe (1)；
It will stretch into the matched second bar-shaped metal object (4) of small diameter tube (2) internal diameter in small diameter tube (2), be arranged outside small diameter tube (2)
Offered to one end in bell-mouthed metal tube (5)；
Fixed large-diameter pipe (1), makes large-diameter pipe (1) be arranged concentrically with small diameter tube (2), and applies pressure to small diameter tube (2), makes metal
Pipe (5) horn mouth one end is resisted against on large-diameter pipe (1)；
Small diameter tube (2) rotation is driven, rotating speed turns/min for 400-450, and the indent for controlling two small diameter tubes (2) is 8-10mm；
Rotation stops operating after 4-8 minutes；
It is to be cooled to after room temperature, extract metal tube (5), the first bar-shaped metal object (3) and the second bar-shaped metal object (4) out successively.
2. the direct production method of reducing according to claim 1, it is characterised in that the first bar-shaped metal object (3)
And/or second the outer surface of bar-shaped metal object (4) be coated with lubricant.
3. the direct production method of reducing according to claim 1 or 2, it is characterised in that the inner wall of the metal tube (5)
It is upper to be coated with lubricant.
4. according to the direct production method of claim 1-3 any one of them reducings, it is characterised in that the pressure is
1000Pa-2000Pa。
5. according to the direct production method of claim 1-4 any one of them reducings, it is characterised in that the large-diameter pipe (1)
Surface roughness with small diameter tube (2) contact portion is Ra2.5-3.
6. according to the direct production method of claim 1-5 any one of them reducings, it is characterised in that the first bar-shaped gold
It is solid or hollow metal stick to belong to thing (3) or the second bar-shaped metal object (4).
7. according to the direct production method of claim 1-6 any one of them reducings, it is characterised in that it is described it is bell-mouthed most
Large diameter is equal to the outside diameter of large-diameter pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711192753.7A CN107984766A (en) | 2017-11-24 | 2017-11-24 | A kind of direct production method of reducing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711192753.7A CN107984766A (en) | 2017-11-24 | 2017-11-24 | A kind of direct production method of reducing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107984766A true CN107984766A (en) | 2018-05-04 |
Family
ID=62032984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711192753.7A Pending CN107984766A (en) | 2017-11-24 | 2017-11-24 | A kind of direct production method of reducing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107984766A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321519A (en) * | 2020-09-28 | 2022-04-12 | 南京菲斯特焊接科技有限公司 | Reducing plastic hose and forming method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5152855A (en) * | 1989-06-29 | 1992-10-06 | Cordis Europa N.V. | Method and device for mutual connection of tubes |
| CN103381659A (en) * | 2013-06-27 | 2013-11-06 | 蓝星（北京）特种纤维技术研发中心有限公司 | PFA variable-diameter pipe forming die |
-
2017
- 2017-11-24 CN CN201711192753.7A patent/CN107984766A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5152855A (en) * | 1989-06-29 | 1992-10-06 | Cordis Europa N.V. | Method and device for mutual connection of tubes |
| CN103381659A (en) * | 2013-06-27 | 2013-11-06 | 蓝星（北京）特种纤维技术研发中心有限公司 | PFA variable-diameter pipe forming die |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321519A (en) * | 2020-09-28 | 2022-04-12 | 南京菲斯特焊接科技有限公司 | Reducing plastic hose and forming method |
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Application publication date: 20180504 |