CN101260956B - Non-corrodible steel conical pipe joint production process - Google Patents
Non-corrodible steel conical pipe joint production process Download PDFInfo
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- CN101260956B CN101260956B CN2008100272138A CN200810027213A CN101260956B CN 101260956 B CN101260956 B CN 101260956B CN 2008100272138 A CN2008100272138 A CN 2008100272138A CN 200810027213 A CN200810027213 A CN 200810027213A CN 101260956 B CN101260956 B CN 101260956B
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- roller
- upper die
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Abstract
The invention discloses a production method for a stainless steel conical pipe connector. The method comprises the following: (1) a step of selecting materials, which is to select a stainless steel connector blank and a connector bolt blank; (2) a step of rolling, which is to roll the conical connector to form a conical interference; (3) a step of making preparing screw threads, which comprises the step of making outer screw threads of the conical pipe connector in the step (2) and the step of making the inner screw threads in the conical pipe connector block in the step (1); (4)a step of quality control and packaging of products. The production method has the advantages of simple process, low production cost, high production efficiency, less scrap production, cleanness and environmentprotection, effectively saving raw materials, long life-span, and good sealing performance due to the tight fit between the made connector and a flared fitting.
Description
Technical field
The present invention relates to a kind of production method of pipe joint, be specifically related to a kind of production method of stainless steel taper water pipe pipe joint.
Background technique
At present, the water pipe of city domestic water is generally iron pipe, copper pipe or galvanized pipe casting and forms, because long-term use iron pipe, copper pipe or galvanized pipe, water pipe has corrosion in various degree, make metal ion the penetrating in the water gradually do not benefit health, greatly have influence on the quality of water, the water electrode the earth infringement resident's that long-term drinking is such is healthy.
And stainless steel has high bending resistance, high tensile, high premium properties such as anticorrosive because of it, when making water pipe with it, tube wall does not need too thickly just can guarantee its usability effectively, usually, the thickness of water wall is 0.5～4 millimeter, and usually matching usedly with it be used to install the conic pipe joint thickness of flared type thin-wall stainless steel water pipe greatly about 2.0～4 millimeter, caliber increases its wall thickness and also thickens thereupon, can guarantee preferably like this on the tube wall can be rolled threaded and make whole pipe joint that certain mechanical strength be arranged, and can save raw material.
In the prior art, the conical surface of conic pipe joint generally all is to produce by lathe grinding, its production process complexity, take a lot of work, time-consuming, expense material, have scrap metal to produce not only not environmental protection after cutting is produced, and the waste resource, increase the processing cost of its cost of production and waste material widely; In addition, the area of the conical surface of producing with lathe is less, can not cooperate with the flared type thin-wall stainless steel closely, and its sealability is bad, is difficult to reach user's demand, and practicability is poor.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of and economize in raw materials, to produce waste material few, the production method of the stainless steel taper water pipe adapter that clean environment firendly, manufacturing efficiency height and cost of production are low.
In order to reach above-mentioned technical purpose, the present invention realizes by following technological scheme:
A kind of production method of non-corrodible steel conical pipe joint, its concrete steps are:
(1) selection operation: select stainless steel joint for pipeline stock and pipe joint nut stock for use;
(2) rolling step: the pipe joint stock is rolled out cone-shaped interface;
(3) thread making operation: comprise the pipe joint outside thread production process that makes in the above-mentioned steps (2) and the pipe joint nut stock internal thread production process in the above-mentioned steps (1) with cone-shaped interface;
(4) quality control and packing process.
The rolling step of above-mentioned steps (2) is after by rolling device the outer wall roll extrusion of the interface of stainless steel joint for pipeline stock being produced, to become the pipe joint that cone-shaped interface is arranged.
The bottom that described rolling device comprises upper die tooling and is connected upper die tooling has the base plate of center hole, the central position of described upper die tooling exterior edge face is provided with live axle, be provided with in the upper die tooling some along the rounded arranged in arrays of upper die tooling central axis and can freely roll tilting roller, the central axis of described tilting roller and upper die tooling has a certain degree; Be provided with some in the upper die tooling along rounded arranged in arrays of upper die tooling central axis and energy free rolling parallel-roller, described parallel-roller is parallel with the upper die tooling central axis, described tilting roller and parallel-roller are staggered, and adjacent tilting roller and the parallel-roller identical angle displacement of being separated by.
The concrete roll extrusion step of passing through rolling device in the described rolling step is:
(1) size of pressing pipe joint stock outside diameter is adjusted footpath in the feeler gauge, then feeler gauge is inserted the center hole of the base plate of rolling device, allow the conical surface of feeler gauge contact with each tilting roller, the size of then pressing pipe joint stock outer peripheral surface diameter is adjusted the radial position of parallel-roller;
(2) with the live axle holding of rolling device on lathe, then the stainless steel joint for pipeline stock is inserted in the center hole of base plate, make the interface of pipe joint stock touch each tilting roller, fixed tube joint stock then, open lathe, make lathe by certain rotating speed rotation, can roll out the cone-shaped interface on certain inclined-plane by three continuous rotating rolling presss of tilting roller;
(3) by several parallel-rollers the pipe joint cylindrical is repaired, then the metal fillings that all are trimmed is disposed, promptly obtain certain taper and its cylindrical and be the pipe joint of smooth smooth cone-shaped interface by cooling liquid.
Stainless steel joint for pipeline stock in the described selection operation is threeway or the union cross stock that straight coupling stock, bending pipe joint stock or straight type pipe joint are welded.
The externally threaded production process of described conic pipe joint specifically is by rolling the threeway or the union cross stock of tooth machine rolling taper free flow coupling stock, taper bending pipe joint stock or taper.
After the cylindrical at described conical pipe straight coupling two ends was rolled threaded, no screw thread position was again by rolling the rolling straight decorative pattern of tooth machine in the middle of it.
The production process of the internal thread of described pipe joint nut is by rolling the internal thread that the rolling of tooth machine goes out pipe joint, and the cylindrical of described pipe joint nut is by rolling the straight decorative pattern that the tooth machine rolls out its cylindrical position.
Compared with prior art, the invention has the beneficial effects as follows:
(1) the present invention is because by replacing traditional metal cutting working system to produce the conical surface of pipe joint with the roll extrusion working system, promptly carry out the pipe joint that roll extrusion produces cone-shaped interface by milled head device interface tube, its production process is simply quick, realize easily, can save raw material, production effect is higher, and the few scrap metal of production process produces the purpose of the clean environment firendly that more is easy to do;
(2) stainless steel joint for pipeline of the present invention can be widely used in the tap water pipe network in city, and its applicability is strong, and clean environment firendly can effectively not prevented the injury of the metal ion of some corrosions to human body by corrosion, and its long service life;
(3) stainless steel joint for pipeline of the present invention can cooperate closely with the stainless steel waterpipe of flared type, and its sealability is strong, and using effect is good.
Description of drawings
Fig. 1 is a production method schematic flow sheet of the present invention;
Fig. 2 a is a free flow coupling stock structural representation among the present invention;
Fig. 2 b is the free flow coupling structural representation that cone-shaped interface is arranged among the present invention;
Fig. 3 a is a bent pipe joint stock structural representation among the present invention;
Fig. 3 b is the bent pipe joint structure schematic representation that cone-shaped interface is arranged among the present invention;
Fig. 4 a is a three-way union stock structural representation among the present invention;
Fig. 4 b is the three-way union structural representation that cone-shaped interface is arranged among the present invention;
Fig. 5 a is a union cross stock structural representation among the present invention;
Fig. 5 b is the union cross structural representation that cone-shaped interface is arranged among the present invention;
Fig. 6 a is a pipe joint nut stock structural representation among the present invention;
Fig. 6 b has pipe joint nut finished product structural representation among the present invention;
Fig. 7 is the cross-sectional view of rolling device among the present invention;
Fig. 8 be among above-mentioned Fig. 7 A-A to the cross section structure schematic representation;
Fig. 9 is the rolling step schematic representation of rolling device of the present invention;
Figure 10 is a feeler gauge structural representation among the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in detail.
Fig. 1 illustrates the quick-reading flow sheets schematic representation of non-corrodible steel conical pipe joint production method of the present invention, and its concrete steps are:
(1) selection operation: select stainless steel joint for pipeline stock and pipe joint nut stock for use, usually, for the convenience of producing, select the tubing of suitable caliber size, then this stainless steel pipe is carried out bending deflection by tube bender, the tubing after this bending deflection is cut into plurality of sections pipe joint stock, the pipe joint stock after the cutting specifically comprises straight-through pipe joint stock (as shown in Figure 1a) again, elbow connection stock (shown in Fig. 2 a), and with three or four three-way union stock (shown in Fig. 3 a) or union cross stocks (shown in Fig. 4 a) that straight-through pipe joint stock is welded; In this operation, comprise that also selecting the pipe joint nut stock (shown in Fig. 5 a) that cooperates with the external diameter of aforesaid pipe joint, this nut stock for use is to forge into the higher pipe joint nut stock of intensity by oil hydraulic press oil pressure or hotpress.In this operation, can select the pipe joint stock of any shape according to the needs of practical application for use, for example: only select free flow coupling or bent pipe joint or three-way union or union cross etc. for use.
(2) rolling step: the pipe joint stock is rolled out cone-shaped interface by rolling device, the concrete structure of rolling device is: as Fig. 7～shown in Figure 8, this rolling device comprises the upper die tooling 1 of hexagonal claw type structure and cooperates the base plate 2 of roll extrusion with upper die tooling 1, on base plate 2, be provided with and be convenient to the center hole 21 that pipe joint passes, central position in upper die tooling 1 exterior edge face is provided with live axle 3, this live axle 3 is for the ease of driving the rolling device rotation, normally with its holding on lathe, start lathe and can drive the tourelle rotation.In upper die tooling 1, be provided with three first die cavities 11 along the rounded arranged in arrays of central axis of upper die tooling 1, wherein be provided with first casket cover 5 in each first die cavity 11, be provided with in first casket cover 5 and be used to hold tilting roller 4 and make tilting roller 4 free rollings first groove 51, described first groove 51 is 45 degree oblique angles layouts with the central axis of upper die tooling 1, so just guaranteed that the tilting roller 4 of three rounded arranged in arrays and the central axis of upper die tooling 1 also are to be 45 degree oblique angles, common convenience in order to assemble and to roll, this tilting roller 4 selects for use two end part that the olive shape roller of certain taper is arranged, in addition, in order to prevent olive shape roller to skid off from the internal surface of base plate 2, the position corresponding to tilting roller 4 on base plate 2 is provided with the baffle plate 8 that prevents that tilting roller 4 from skidding off.
In order to make cylindrical finishing arrive the reservation value by the pipe joint after tilting roller 4 roll extrusion, guarantee that simultaneously its smooth outer surface is attractive in appearance, also be provided with the parallel-roller 6 that three central axis with upper die tooling 1 be arranged in parallel in the upper die tooling 1, these three parallel-rollers 6 are arranged along the mode of the rounded array of central axis of upper die tooling 1, and parallel-roller 6 one ends contact with upper die tooling 1 inside top surface, the other end contacts with the internal surface of base plate 2, and the be separated by angle displacements of 60 degree of each parallel-roller 6 and each 4 of tilting roller.The concrete mounting type of these three parallel-rollers 6 is: be provided with second die cavity 12 of another group along the rounded arranged in arrays of central axis in upper die tooling 1, be equipped with second casket cover 7 in this second die cavity 12, be provided with second groove 71 in described second casket cover 7, being placed in second groove 71 of described parallel-roller 6 correspondences, and guarantee that parallel-roller 6 can freely roll around its axis at second groove 71.
Because the profile of upper die tooling 1 is the claw type structure of hexagonal, aforesaid three tilting roller 4 and three each positions, angle that are arranged at this claw type structure that parallel-roller 6 is corresponding respectively that are miter angle.
Usually, in order better to adjust the position of parallel ball, the side of the claw type face end of each parallel-roller 6 correspondence is provided with the adjustment screw 9 that is used to adjust parallel-roller 6 radial displacements; In addition,, parallel-roller is locked in certain position, and the side corresponding to three claw type inboards of parallel-roller 6 of upper die tooling 1 is provided with and is used to lock parallel-roller 6 lock screw 10 in order to guarantee before roll extrusion.
The concrete job step of this tourelle is:
At first, three lock screw and three nuts that are mated are all unclamped, then the effective diameter of thread feeler gauge 12 (as shown in figure 10) that is adjusted to the pipe joint external diameter is filled in the center hole of rolling device, allow the conical surface of feeler gauge 12 contact with three tilting rollers 4, firmly compress, then regulate first parallel-roller 6 and adjust screw 9, tighten and adjust the axle center that upper die tooling 1 pushed parallel-roller 6 and second casket cover 7 to by screw 9, when can't again the parallel-roller 6 and second casket being overlapped 7 when the axle center of upper die tooling 1 advances, at this moment the nut on the screw 9 is adjusted in locking, tighten the lock screw 7 that is installed in its side then, guarantee that second casket cover 7 is not loosening; Two second caskets cover 7 in addition also by identical step with its adjustment and be locked in the appropriate position.
Then, with live axle 3 holdings of rolling device on lathe, then stainless steel joint for pipeline 11 is inserted into the center hole 21 interior (as shown in Figure 9) of base plate 2, makes the interface of pipe joint 11 touch three tilting rollers 4, the fixed tube joint 11 then, open lathe, make lathe by certain rotating speed rotation, when the rolled tube joint, need to use the cooling liquid that has oiling agent, constantly be injected into rolling device axially back and forth pressurization motion and constantly rotation regularly simultaneously; The to-and-fro motion that does not the stop liquid that the metal fillings that produces in the roll extrusion process can be cooled washes away, can allow simultaneously oiling agent penetrate between taper roller 4 and the parallel-roller 6 again and obtain lubricated effectively, by three tilting rollers 4 constantly rotating rolling press can roll out be 45 degree oblique angles the pipe joint of cone-shaped interface (as Fig. 2 b, as Fig. 3 b, as Fig. 4 b and Fig. 5 b), this moment, inwall arch ring 13 will appear in the inwall of pipe joint, this inwall arch ring 13 is to be the inwall metal that tilting roller 4 roll extrusion that miter angle arranges are come out by 3, this inwall arch ring 13 increases the area of pipe joint conical surface, strengthened the mechanical strength of conic pipe joint effectively, guarantee that it cooperates more closely with the flared type water pipe, good seal performance, can not allow the interior water of water pipe ooze and expose, practicability improves greatly.
At last, repair, then the metal fillings that all are trimmed is disposed, can obtain regulation tapering and its cylindrical and be the pipe joint 11 of smooth smooth cone-shaped interface by cooling liquid by 6 pairs of pipe joint cylindricals of three parallel-rollers.
(3) thread making operation: comprise the conic pipe joint outside thread production process that makes in the above-mentioned steps (2) and the internal thread production process of the pipe joint nut in the above-mentioned steps (1), the former makes its cylindrical roll out outside thread by threeway or the union cross stock that rolls tooth machine rolling taper free flow coupling stock, taper bending pipe joint stock or taper; The latter specifically is meant by rolling the internal thread of tooth machine rolled tube Female connector fittings;
(4) behind the rolling outside thread in cylindrical two ends of above-mentioned conical pipe straight coupling, threadless position is again by rolling the rolling straight decorative pattern of tooth machine in the middle of it; The cylindrical of aforementioned tube Female connector fittings is by rolling the straight decorative pattern that the tooth machine rolls out its cylindrical position;
(5) with the conic pipe joint that makes, as Fig. 2 b, as Fig. 3 b, difform conic pipe joint finished product and the pipe joint nut shown in Fig. 6 b carry out quality inspection and relevant packing process shown in Fig. 4 b, Fig. 5 b.
The present invention is with above-mentioned when manufacturing the pipe joint that cone-shaped interface is arranged that forms and being connected with the flared type water pipe, the taper mouth of pipe joint is cooperated with the expansion mouth of water pipe, then with the cylindrical of pipe joint nut sleeve in the connecting part of pipe joint and flared type water pipe, with conic pipe joint and flared type water pipe linking together tightly, because pipe joint has cone-shaped interface, make it can cooperate closely with the flared type water pipe, good seal performance, can be widely used in the transformation process of city tap-water pipe network, practical.
Claims (7)
1. the production method of a non-corrodible steel conical pipe joint, its concrete steps are:
(1) selection operation: select stainless steel joint for pipeline stock and pipe joint nut stock for use;
(2) rolling step: the pipe joint stock is rolled out cone-shaped interface, described rolling step is by after the outer wall roll extrusion of rolling device to the interface of stainless steel joint for pipeline stock, become the pipe joint that cone-shaped interface is arranged, the bottom that described rolling device comprises upper die tooling (1) and is connected upper die tooling (1) has the base plate (2) of center hole (21), the central position of described upper die tooling (1) exterior edge face is provided with live axle (3), be provided with in the upper die tooling (1) some along the rounded arranged in arrays of upper die tooling (1) central axis and can freely roll tilting roller (4), the central axis of described tilting roller (4) and upper die tooling (1) has a certain degree; Be provided with some in the upper die tooling (1) along rounded arranged in arrays of upper die tooling (1) central axis and energy free rolling parallel-roller (6), described parallel-roller (6) is parallel with upper die tooling (1) central axis, described tilting roller (4) and parallel-roller (6) are staggered, and adjacent tilting roller (4) and parallel-roller (6) the identical angle displacement of being separated by;
(3) thread making operation: comprise the pipe joint outside thread production process that makes in the above-mentioned steps (2) and the pipe joint nut stock internal thread production process in the above-mentioned steps (1) with cone-shaped interface;
(4) quality control and packing process.
2. the production method of non-corrodible steel conical pipe joint according to claim 1, it is characterized in that: the concrete roll extrusion step in the described rolling step is:
(1) size of pressing pipe joint stock outside diameter is adjusted footpath in the feeler gauge, then feeler gauge is inserted the center hole of the base plate of rolling device, allow the conical surface of feeler gauge contact with each tilting roller, the size of then pressing pipe joint stock outer peripheral surface diameter is adjusted the radial position of parallel-roller;
(2) with the live axle holding of rolling device on lathe, then the stainless steel joint for pipeline stock is inserted in the center hole of base plate, make the interface of pipe joint stock touch each tilting roller, fixed tube joint stock then, open lathe, make lathe by certain rotating speed rotation, can roll out the cone-shaped interface on certain inclined-plane by three continuous rotating rolling presss of tilting roller;
(3) by several parallel-rollers the pipe joint cylindrical is repaired, then the metal fillings that all are trimmed is disposed, promptly obtain certain taper and its cylindrical and be the pipe joint of smooth smooth cone-shaped interface by cooling liquid.
3. the production method of non-corrodible steel conical pipe joint according to claim 1 and 2 is characterized in that: the stainless steel joint for pipeline stock in the selection operation of described step (1) is threeway or the union cross stock that free flow coupling stock, bending pipe joint stock or straight type pipe joint are welded.
4. the production method of non-corrodible steel conical pipe joint according to claim 3 is characterized in that: the threeway or the union cross stock that free flow coupling stock, bending pipe joint stock, threeway or union cross stock correspondence are rolled into taper free flow coupling stock, taper bending pipe joint stock, taper by rolling step; The tooth machine correspondence of rolling by the outside thread production process is rolled into threeway or the union cross with externally threaded taper free flow coupling, taper bending pipe joint or taper again.
5. the production method of non-corrodible steel conical pipe joint according to claim 4 is characterized in that: after the cylindrical at above-mentioned taper free flow coupling two ends was rolled threaded, threadless position was again by rolling the rolling straight decorative pattern of tooth machine in the middle of it.
6. the production method of non-corrodible steel conical pipe joint according to claim 1 is characterized in that: the production process of the internal thread of pipe joint nut is by rolling the internal thread that the rolling of tooth machine goes out pipe joint in the described step (1).
7. the production method of conic pipe joint according to claim 6, it is characterized in that: the cylindrical of described pipe joint nut is by rolling the straight decorative pattern that the tooth machine rolls out its cylindrical position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100272138A CN101260956B (en) | 2008-04-03 | 2008-04-03 | Non-corrodible steel conical pipe joint production process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100272138A CN101260956B (en) | 2008-04-03 | 2008-04-03 | Non-corrodible steel conical pipe joint production process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101260956A CN101260956A (en) | 2008-09-10 |
| CN101260956B true CN101260956B (en) | 2010-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100272138A Expired - Fee Related CN101260956B (en) | 2008-04-03 | 2008-04-03 | Non-corrodible steel conical pipe joint production process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101260956B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112404888A (en) * | 2020-09-23 | 2021-02-26 | 浙江德利福科技股份有限公司 | Forming process of stainless steel three-way pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180147A (en) * | 1996-04-19 | 1998-04-29 | 株式会社三键 | Flare-type pipe joint |
| CN101025241A (en) * | 2007-03-28 | 2007-08-29 | 仲刚 | Non-welded copper-aluminium tube for air conditioner and mfg, method |
-
2008
- 2008-04-03 CN CN2008100272138A patent/CN101260956B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1180147A (en) * | 1996-04-19 | 1998-04-29 | 株式会社三键 | Flare-type pipe joint |
| CN101025241A (en) * | 2007-03-28 | 2007-08-29 | 仲刚 | Non-welded copper-aluminium tube for air conditioner and mfg, method |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2003-53450A 2003.02.26 |
| JP特开2004-290987A 2004.10.21 |
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