CN1318704A - Pipe and pipe fittings with stainless steel lining and their manufacture - Google Patents
Pipe and pipe fittings with stainless steel lining and their manufacture Download PDFInfo
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- CN1318704A CN1318704A CN 01113096 CN01113096A CN1318704A CN 1318704 A CN1318704 A CN 1318704A CN 01113096 CN01113096 CN 01113096 CN 01113096 A CN01113096 A CN 01113096A CN 1318704 A CN1318704 A CN 1318704A
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- stainless steel
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- tubulose
- pipe fitting
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Abstract
The pipe and pipe fittings with stainless steel lining consists of pipe body and stainless steel layer. The shape of stainless steel layer is as the same as the shape of inner cavity wall of the pipe body and the stainless steel layer is in the thickness of 0.2-2 mm. The manufacture steps include preparing, pipe-drawing, welding, material proportioning, positioning, pressing and finishing.
Description
The present invention relates to a kind of rigid pipe and pipe fitting, particularly a kind of double wall pipe and pipe fitting the invention still further relates to the manufacture method of this double wall pipe and pipe fitting.
Existing water supply system, especially potable water system, its pipe extensively adopts galvanized welded pipe (as standard GB/T3091-1993), its pipeline connecting parts comprises that elbow, various terminal, threeway, four-way are to make (as standard GB 3287-82 to GB3289-89 all size) by forging cast iron, influence feed water quality in order to prevent galvanized welded pipe and can to forge cast iron pipeline connecting parts generation corrosion, traditional method is to do zinc-plated processing, though, zinc coat has antiseptic effect, but there is following effect in flowing water to the coating in the runner:
1. the physics aspect--the water molecule kinetic energy of flowing water impacts the little zinc coat of thickness constantly, and the microparticle in the flowing water produces friction with zinc coat in flowing;
2. chemical aspect--some material (as the chlorine in the tap water, oxygen etc.) in the flowing water is the etch zinc coat constantly;
Zinc coat is under factor affecting such as above-mentioned physics, chemistry, the little coating of thickness can go to pot after not long a period of time, and expansion rapidly by the part of beginning, disappear until whole coating, exposed steel or iron surface be along with producing corrosion, and also constantly enlarge at the inner chamber corrosion layer of pipe and pipe fitting, and can adsorb the microparticle in the flowing water, thereby form increasing sediments, and these sedimental existence can bring following point:
1. sediments is dissolved in the water, make flowing water particularly potable water pollute, can see after pipe that uses from oneself and pipe fitting are disassembled, pipe and tube intracavity dirt bonding inwall, disgusting, its adverse effect to human body is very serious;
2. sediments can be in time and constantly increase, and can form solid caking, thus influence flow, even stop up runner, and it removes difficulty, not only make troubles, and increase the expense of safeguarding to the user.
At the problem of above-mentioned existing pipe, pipe fitting, some builds authorities' regulation, in newly-built building pipe-line system, must not use galvanized welded pipe and malleable cast iron pipeline link; For this reason, the dealer develops pipe, the pipe fitting that nontoxic all-plastic is made, and solves the water quality deterioration problem to replace zinc coating, but plastic article are easily aging, cracking, not shock-resistant, high temperature, and also price is also relatively more expensive, is difficult to expand wide the use in water supply system; Continue it, people give the advantage of closing steel or iron piece and plastic part, the pipe of exploitation plastic lining, pipe fitting, these type of compound goods have superperformance really, but its manufacturing process complexity, especially under the condition of pipe fitting chamber body shape more complicated, its processing procedure will be multiplied, thereby the price of its goods is higher, in addition, the plastics composite bed thickness is bigger, if keep state-set standard latus rectum, pipe, the all essential redesign of the body of pipe fitting is made, and existing standard spare specification, quantity is very big, existing for many years complete feed, production system is if these prior art conditions of eliminating also can be brought enormous economic loss.
The objective of the invention is to provide a kind of pipe, pipe fitting and manufacture method thereof of improved interior coating stainless steel layer, it can no longer become the pollution sources of water supply for flow path wall, and simple in structure, and manufacturability is good, and has higher economic value.
For the technological scheme that reaches above-mentioned purpose is: the pipe of interior coating stainless steel layer, pipe fitting, cylindrical in its body, curved arc cylindrical shape, threeway cylindrical shape, four-way cylindrical shape are characterized in that chamber body wall at body tightens closely connected unification shape and the chamber body wall forms the stainless steel lining that communicates.Nationality is to isolate contacting of steel or irony pipe, pipe fitting chamber body wall and flowing water.
The manufacture method of the pipe of coating stainless steel layer comprises the following steps: in above-mentioned
A, preparation--prepare pipe;
B, trombone slide welding--make tubulose with corrosion resistant plate and get the raw materials ready;
C, batching--get the raw materials ready by required size intercepting tubulose;
D, location--tubulose is got the raw materials ready and is inserted in the pipe fitting body;
E, drawing moulding--to the tubulose drawing calendering formation of getting the raw materials ready of location;
F, finished product;
The manufacture method of the pipe fitting of coating stainless steel layer also can comprise the following steps: in above-mentioned
A, preparation--prepare the pipe fitting of standard;
B, trombone slide welding--make tubulose with corrosion resistant plate and get the raw materials ready;
C, batching--get the raw materials ready by required size intercepting tubulose;
D, location--tubulose is got the raw materials ready and is inserted in the pipe fitting body, adds the sealing plug screw, connects hydraulic loading system;
E, compression and moulding;
F, finished product;
The present invention fits tightly stainless steel lining in pipe, pipe fitting chamber body, even in long-term use, the deposition that also can not produce corrosion and bring out because of corrosion, it is smooth and easy to keep water to flow, and fundamentally eliminate because the circulation wall produces the root that worsens water quality, can satisfy the demand of modern architecture water supply system, and the technology of its calendering formation is simple, goods do not influence original NBS specification, the spending that these all can make the cost increase of goods reduce the user.
Below in conjunction with embodiment and accompanying drawing invention is described in further detail:
Fig. 1 is that the pipe vertical profile of coating stainless steel layer is looked schematic representation in the present invention.
Fig. 2 is that the elbow vertical profile of coating stainless steel layer is looked schematic representation in the present invention.
Fig. 3 is that the threeway vertical profile of coating stainless steel layer is looked schematic representation in the present invention.
Fig. 4 is that the malleable iron connector vertical profile of coating stainless steel layer is looked schematic representation in the present invention.
Fig. 5 is that the four-way vertical profile of coating stainless steel layer is looked schematic representation in the present invention.
Fig. 6 is the pipe manufacturing process block diagram of coating stainless steel layer in the present invention.
Fig. 7 is the pipe fitting manufacturing process block diagram () of coating stainless steel layer in the present invention.
Fig. 8 is the pipe fitting manufacturing process block diagram (two) of coating stainless steel layer in the present invention.
With reference to Fig. 1, interior coating stainless steel layer pipe, form by body 1 and stainless steel lining 2, wherein: body 1 can be galvanized welded pipe, for all size with galvanized welded pipe is carried in standard GB/T3091-1993 low pressure circulation, also can be standard GB/T3092-1993 low-pressure fluid conveying uses welded steel pipe, cover a stainless steel lining 2 on body 1 cylindrical circular internal chamber wall 10;
With reference to Fig. 2, interior coating stainless steel layer elbow is made up of body 1 ' and stainless steel lining 2 ', and wherein: body 1 ' is made by malleable cast iron, as standard GB 3289.2 to GB3289.9 all sizes, body 1 ' is on the columnar internal chamber wall 10 ' of curved arc and covers a stainless steel lining 2 ';
Stainless steel lining 2 ', the thin corrosion resistant plate roll bending welding of avirulent, be the pipe material, pipe material bend pipe is positioned at body 1 ' inner chamber, sealed at both ends, and pipe material inner chamber 22 ' is made hydraulic pressurization extend, make the outer surface 21 ' of stainless steel lining 2 ' fit tightly surface at body 1 ' internal chamber wall 10 ', formation has only the new structure of the interior coating stainless steel layer elbow that the internal surface 20 ' of stainless steel lining 2 ' contacts with flowing water, talking stainless steel lining thickness is 0.2 to 2.0 millimeter, and stainless steel lining 2 ' also can be nontoxic the extension through hydraulic pressurization of seamless steel pipe and constitutes.
With reference to Fig. 3, the threeway of interior coating stainless steel layer, body 1 is arranged " and stainless steel lining 2 " form, wherein: body 1 " can be the threeway of standard GB 3289.10 to GB3289.19 all sizes, at body 1 " the columnar internal chamber wall 10 of threeway " on cover a stainless steel lining 2 ";
With reference to Fig. 5, interior coating stainless steel layer four-way is by body 1 " and stainless steel lining 2 " form body 1 " can be the four-way of standard GB 3289.20, GB3289.21 all size, its structure is except vertically to opening 11; need cutting two through holes 110 " in addition, all the other all communicate with threeway.
The pipeline connecting parts of interior coating stainless steel layer, in addition to the implementation, the utility model is equally applicable to all size of other pipeline connecting parts.
With reference to Fig. 6 and Fig. 1, the method for making pipe of interior coating stainless steel layer, it comprises the following steps:
(1) prepare--the galvanized welded pipe or the Weldable Steel required size specification that needs are covered stainless steel lining are got all the ready;
(2) trombone slide welding--coating stainless steel layer tubulose got the raw materials ready in roll bending, trombone slide and welding formed on bench with nontoxic corrosion resistant plate; Also can directly get the raw materials ready by nontoxic Stainless Steel Tube as tubulose;
(3) batching--the pipe specification that provides according to preparatory process is got the raw materials ready to tubulose and to be blocked by tube length;
(4) locate--tubulose is got the raw materials ready put in the body of pipe with manual type or mechanism hand;
(5) drawing moulding--to the tubulose drawing calendering formation of getting the raw materials ready of location, (stainless steel lining 2) fits tightly on body 1 internal chamber wall 10 of pipe so that tubulose is got the raw materials ready on bench.
(6) finished product is with reference to Fig. 7 and Fig. 2, the manufacture method of interior coating stainless steel layer elbow, and it comprises the following steps:
(1) prepare--elbow two ends machining screw and zinc-plated (promptly the taking from standard piece) of casting;
(2) trombone slide welding--with nontoxic corrosion resistant plate roll bending, trombone slide and weldering on bench
Connecing the interior coating stainless steel layer tubulose of formation gets the raw materials ready;
(3) batching--according to the elbow specification, tubulose got the raw materials ready block by Len req, and
Bend pipe forms corresponding arc with elbow;
(4) location--tubulose got the raw materials ready insert in the elbow body, and utilize elbow two ends screw thread,, on the hydraulic joint of plug screw, connect hydraulic loading system again with plug screw and the seal ring sealed tubular two ends of getting the raw materials ready;
(5) compression and moulding--to get the raw materials ready inner chamber pressurization of tubulose, moulding pressure is not more than 1.9Mpa with hydraulic loading system, and be 3 to 5 minutes pressing time, make tubulose get the raw materials ready (stainless steel lining 2 ') fit tightly on elbow body 1 ' internal chamber wall 10 ';
(6) finished product--remove location, pressurized equipment, finished product is provided.
With reference to Fig. 8 and Fig. 3,4,5, the manufacture method of the threeway of interior coating stainless steel layer, malleable iron connector and four-way.It comprises the following steps:
(1) prepares
(2) trombone slide welding--identically with Fig. 7 obtain tubulose and get the raw materials ready;
(3) batching--the pipe fitting specification of preparing according to (1) is got the raw materials ready with tubulose and to be blocked by Len req;
(4) location--tubulose got the raw materials ready insert in the pipe fitting body, identical location with Fig. 7 and establish pressurizing system;
(5) compression and moulding--with Fig. 7 method;
(6) finished product--remove location, pressurized equipment, pipe fitting perpendicular to tubulose get the raw materials ready axis to outlet port 11 " corresponding tubulose get the raw materials ready (stainless steel lining 2 ") go up cutting through hole 110 ", this through hole 110 " diameter is identical with the pipe fitting latus rectum, and finished product is provided after the cutting.
Claims (9)
1, pipe, the pipe fitting of coating stainless steel layer comprise body in a kind of, and the shape of its inner chamber can be cylindrical, threeway cylindrical shape and four-way cylindrical shape.It is characterized in that: the internal chamber wall of body tighten closely connected unification shape and chamber body wall shape just as stainless steel lining.
2, pipe, the pipe fitting of interior coating stainless steel layer according to claim 1, the thickness that it is characterized in that stainless steel lining is 0.2 to 2.0 millimeter.
3, pipe, the pipe fitting of interior coating stainless steel according to claim 1 is characterized in that stainless steel lining can be the sealing layer that nontoxic corrosion resistant plate rolls the welding calendering formation.
4, pipe, the pipe fitting of interior coating stainless steel layer according to claim 1 is characterized in that stainless steel lining can be the sealing layer of nontoxic Stainless Steel Tube calendaring molding.
5, a kind of manufacture method of making the pipe of the described interior coating stainless steel layer of claim 1 is characterized in that comprising the following steps:
A, preparation--prepare the pipe of standard;
B, trombone slide welding--make tubulose with corrosion resistant plate and get the raw materials ready;
C, batching--get the raw materials ready by required size intercepting tubulose;
D, location--tubulose is got the raw materials ready and is inserted in the pipe fitting body;
E, drawing moulding-to the tubulose of the location drawing calendering formation of getting the raw materials ready;
F, finished product;
6, a kind of manufacture method of making the pipe fitting of the described interior coating stainless steel layer of claim 1 is characterized in that comprising the following steps:
A, preparation--prepare the pipe fitting of standard;
B, trombone slide welding--make tubulose with corrosion resistant plate and get the raw materials ready;
C, batching--get the raw materials ready by required size intercepting tubulose;
D, location--tubulose is got the raw materials ready and is inserted in the pipe fitting body, adds the sealing plug screw, connects hydraulic loading system;
E, drawing moulding--to the tubulose drawing calendering formation of getting the raw materials ready of location;
F, finished product;
7, the manufacture method of pipe fitting according to claim 6, but it is characterized in that tubulose spare part elbow-shaped becomes corresponding arc with elbow in the batching.
8, the manufacture method of pipe fitting according to claim 6 is characterized in that forming in the step at product, and cutting is vertical with pipe fitting to the corresponding through hole of outlet but tubulose is got the raw materials ready.
9, the manufacture method of basis according to claim 6 is characterized in that moulding pressure is not more than 1.9MPa in the compression and moulding step, and be 3 to 5 minutes pressing time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01113096 CN1318704A (en) | 2001-06-07 | 2001-06-07 | Pipe and pipe fittings with stainless steel lining and their manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01113096 CN1318704A (en) | 2001-06-07 | 2001-06-07 | Pipe and pipe fittings with stainless steel lining and their manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1318704A true CN1318704A (en) | 2001-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01113096 Pending CN1318704A (en) | 2001-06-07 | 2001-06-07 | Pipe and pipe fittings with stainless steel lining and their manufacture |
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| CN (1) | CN1318704A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561059B (en) * | 2009-05-11 | 2010-12-01 | 江阴中南重工股份有限公司 | Manufacturing method of stainless steel composite board welding steel pipe and pipe unit |
| CN103752988A (en) * | 2013-12-30 | 2014-04-30 | 攀钢集团工程技术有限公司 | Welding method of stainless steel plates |
| CN103752987A (en) * | 2013-12-30 | 2014-04-30 | 攀钢集团工程技术有限公司 | Welding method of stainless steel plates |
-
2001
- 2001-06-07 CN CN 01113096 patent/CN1318704A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561059B (en) * | 2009-05-11 | 2010-12-01 | 江阴中南重工股份有限公司 | Manufacturing method of stainless steel composite board welding steel pipe and pipe unit |
| CN103752988A (en) * | 2013-12-30 | 2014-04-30 | 攀钢集团工程技术有限公司 | Welding method of stainless steel plates |
| CN103752987A (en) * | 2013-12-30 | 2014-04-30 | 攀钢集团工程技术有限公司 | Welding method of stainless steel plates |
| CN103752988B (en) * | 2013-12-30 | 2015-09-16 | 攀钢集团工程技术有限公司 | The welding method of corrosion resistant plate |
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