CN105508604A - Extrusion rubber sealing device and method for acid pickling of inner surfaces of bimetallic seamless steel pipes by extrusion rubber sealing devices - Google Patents
Extrusion rubber sealing device and method for acid pickling of inner surfaces of bimetallic seamless steel pipes by extrusion rubber sealing devices Download PDFInfo
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- CN105508604A CN105508604A CN201610043041.8A CN201610043041A CN105508604A CN 105508604 A CN105508604 A CN 105508604A CN 201610043041 A CN201610043041 A CN 201610043041A CN 105508604 A CN105508604 A CN 105508604A
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- China
- Prior art keywords
- rubber sealing
- seamless steel
- steel pipe
- sealing device
- bimetallic seamless
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
- F16J15/028—Sealings between relatively-stationary surfaces with elastic packing the packing being mechanically expanded against the sealing surface
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/04—Apparatus for cleaning or pickling metallic material for cleaning pipes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses an extrusion rubber sealing device and a method for acid pickling of inner surfaces of bimetallic seamless steel pipes by the extrusion rubber sealing devices. The extrusion rubber sealing device comprises a nut, a rubber seal ring, an upper steel plate and a lower steel plate. The upper steel plate and the nut are placed above the lower steel plate, the upper surface of the upper steel plate is connected with the lower surface of the nut, and the rubber seal ring is arranged between the upper steel plate and the lower steel plate. The method includes: lifting the bimetallic seamless steel pipes to the position of an acid pickling station; adding the extrusion rubber sealing devices to the two ends of each bimetallic seamless steel pipe, tightening the nuts of the extrusion rubber sealing devices to enable outward expansion of rubber under extrusion of the upper and lower steel plates, sequentially connecting the bimetallic seamless steel pipes, connecting a last acid outlet to an acid recovery tank which is connected with an acid feeding system; performing acid pickling of the inner surfaces of the bimetallic seamless steel pipes; after acid flows out, unscrewing the nuts to enable pressure release and shrinkage of the extrusion rubber sealing devices, and recovering residual acid for recycling. The extrusion rubber sealing device and the method for acid pickling of the inner surfaces of the bimetallic seamless steel pipes by the extrusion rubber sealing devices have the advantages that the inner surfaces of the bimetallic seamless steel pipes can be cleaned, and technical simplicity, convenience in operation and low cost are realized.
Description
Technical field
The present invention relates to bimetallic seamless steel pipe manufacturing technology field, specifically extrude the method for rubber sealing device and pickling bimetallic seamless steel pipe internal surface thereof.
Background technique
Bimetallic seamless steel pipe refers to that a performance is combined with each other according to particular/special requirement with the different steel grade of value, to meet the high added value tube product of specific use.In transportation pipe process, due to inner layer metal Long contact time corrosive liquids, therefore require high to inner layer metal, need to use anticorrosive, and particular/special requirement is not had to outer layer metal.Can reasonably combined according to different application environmental selection internal and external layer metal, can reduce costs again while saving noble metal.Since bimetallic seamless steel pipe in 1991 comes into operation, through the development of more than ten years, be widely used.
In bimetallic seamless steel pipe, metallurgical composite seamless steel pipe adhesive strength is the highest, but due to through hot extrusion operation, there is glass powder in internal surface, scale is there is after heat treatment, due to the existence of the metals such as outer carbon steel, bimetallic seamless steel pipe can only carry out internal surface pickling, therefore pickling cleaning difficulty.
Summary of the invention
The object of the present invention is to provide the method for efficiency is high, safety coefficient is high, cost is low extruding rubber sealing device and pickling bimetallic seamless steel pipe internal surface thereof, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following technological scheme:
Extruding rubber sealing device, comprises nut, sealing rubber ring, upper steel plate, lower steel plate; Upper steel plate and nut are placed on lower steel plate, and the upper surface of upper steel plate is connected with the lower surface of nut, is provided with sealing rubber ring between upper steel plate and lower steel plate.
The method of described extruding rubber sealing device pickling bimetallic seamless steel pipe internal surface, comprises the following steps:
1) bimetallic seamless steel pipe is winched to pickling frock position;
2) bimetallic seamless steel pipe two ends are added extruding rubber sealing device, and extruding rubber sealing device not limiting by bimetallic seamless steel pipe length, energy disposablely puts into >=bimetallic seamless steel pipe of 1;
3) tighten the nut of extruding rubber sealing device, the extruding of upper steel plate, lower steel plate makes sealing rubber ring outwards expand, and reaches sealing effect;
4) during the quantity > 1 of bimetallic seamless steel pipe, first bimetallic seamless steel pipe rigidity capsule acid inlet is connected logical acid system, acid mouth connects second bimetallic seamless steel pipe acid inlet, be connected to last acid mouth successively and connect acid solution accumulator tank, make the bimetallic seamless steel pipe of pickling reach cascading effect;
5) acid solution accumulator tank connects logical acid system, and acid solution is reused;
6) open logical sour valve and start pickling bimetallic seamless steel pipe internal surface;
7) after pickling completes, close logical sour valve, after the acid solution until more than 70% flows out, lax nut, makes the pressure release of extruding rubber sealing device shrink, and in bimetallic seamless steel pipe, residual acid solution flows out recycling between gap.
As the further scheme of the present invention: the outer layer metal pipe material of described bimetallic seamless steel pipe is carbon steel, low alloy steel or alloyed steel, and inner layer metal pipe material is high alloy steel, stainless steel or nickel-base alloy.
As the further scheme of the present invention: the rubber extruded swell increment 2 ~ 5mm extruding rubber sealing device in described step 3).
As the further scheme of the present invention: extrude the acid inlet of rubber sealing device in described step 4) lower than acid mouth 15 ~ 40mm.
As the further scheme of the present invention: open logical sour valve in described step 6) and start pickling bimetallic seamless steel pipe internal surface, logical acid fracturing power 0.8 ~ 1.8MPa.
Compared with prior art, the invention has the beneficial effects as follows: the present invention makes the internal surface of bimetallic seamless steel pipe clean, noresidue glass powder or scale, frock manufacturing process is simple, easy-to-operat, not by bimetallic seamless steel pipe length constraint, disposablely wash branched bimetallic seamless steel pipe, relative to inwall sandblasting, reconditioning, extruding rubber sealing device pickling yield rate is high, efficiency is high, safety coefficient is high, greatly reduces manufacture cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is using method schematic diagram of the present invention.
In figure: 1-nut, 2-sealing rubber ring, 3-upper steel plate, 4-lower steel plate.
Embodiment
Below in conjunction with the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
Refer to Fig. 1-Fig. 2, in the embodiment of the present invention, extruding rubber sealing device, comprises nut 1, sealing rubber ring 2, upper steel plate 3, lower steel plate 4.Upper steel plate 3 and nut 1 are placed on lower steel plate 4, and the upper surface of upper steel plate 3 is connected with the lower surface of nut 1, is provided with sealing rubber ring 2 between upper steel plate 3 and lower steel plate 4.
Pickling X60/N08825 bimetallic seamless steel pipe, comprises the following steps:
1) process of X60/N08825 compound hollow forging: X60/N08825 bimetallic seamless steel pipe is winched to pickling support roller frock position;
2) once put into three X60/N08825 bimetallic seamless steel pipes, often prop up X60/N08825 bimetallic seamless steel pipe length and be respectively 6.9 meters, 7.3 meters and 8.2 meters, often prop up X60/N08825 bimetallic seamless steel pipe two ends and put into extruding rubber sealing device;
3) tighten the nut 1 of extruding rubber sealing device, the extruding of upper steel plate 3, lower steel plate 4 makes sealing rubber ring 2 outwards expand, and reaches sealing effect;
4) first extruding rubber sealing device acid inlet is connected logical acid system, acid mouth connects second extruding rubber sealing device acid inlet, second acid mouth connects the 3rd extruding rubber sealing device acid inlet, 3rd extruding rubber sealing device acid mouth connects acid solution accumulator tank, makes the X60/N08825 bimetallic seamless steel pipe of three pickling reach cascading effect;
5) acid solution accumulator tank connects logical acid system, and acid solution is reused;
6) open logical sour valve and start pickling X60/N08825 bimetallic seamless steel pipe internal surface, acid strength is 17%HNO
3+ 4.6%HF, pickling temperature 48 DEG C;
7) after pickling completes, close logical sour valve, treat that acid solution major part flows out, lax nut 1, the pressure release of extruding rubber sealing device is shunk, in X60/N08825 bimetallic seamless steel pipe, residual acid solution flows out recycling between gap, takes out aerated capsule, obtains the X60/N08825 bimetallic seamless steel pipe that inwall is clean.
Embodiment 2
In the embodiment of the present invention, pickling L360QS/316L bimetallic seamless steel pipe, comprises the following steps:
1) process of L360QS/316L bimetallic seamless steel pipe: L360QS/316L bimetallic seamless steel pipe is winched to pickling support roller frock position;
2) five L360QS/316L bimetallic seamless steel pipes are once put into, often prop up L360QS/316L bimetallic seamless steel pipe length and be respectively 6.7 meters, 6.9 meters, 7.4 meters, 8.2 meters and 8.9 meters, often prop up L360QS/316L bimetallic seamless steel pipe two ends and put into extruding rubber sealing device;
3) tighten the nut 1 of extruding rubber sealing device, the extruding of upper steel plate 3, lower steel plate 4 makes sealing rubber ring 2 outwards expand, and reaches sealing effect;
4) first extruding rubber sealing device acid inlet is connected logical acid system, acid mouth connects second extruding rubber sealing device acid inlet, second acid mouth connects the 3rd extruding rubber sealing device acid inlet, be connected to the 5th extruding rubber sealing device acid mouth successively and connect acid solution accumulator tank, make the L360QS/316L bimetallic seamless steel pipe of five pickling reach cascading effect;
5) acid solution accumulator tank connects logical acid system, and acid solution is reused;
6) open logical sour valve and start pickling L360QS/316L bimetallic seamless steel pipe internal surface, acid strength is 22%HNO
3+ 4.4%HF, pickling temperature 53 DEG C;
7) after pickling completes, close logical sour valve, treat that acid solution major part flows out, lax nut 1, the pressure release of extruding rubber sealing device is shunk, in L360QS/316L bimetallic seamless steel pipe, residual acid solution flows out recycling between gap, takes out aerated capsule, obtains the L360QS/316L bimetallic seamless steel pipe that inwall is clean.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.
In addition, be to be understood that, although this specification is described according to mode of execution, but not each mode of execution only comprises an independently technological scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technological scheme in each embodiment also through appropriately combined, can form other mode of executions that it will be appreciated by those skilled in the art that.
Claims (6)
1. extrude rubber sealing device, it is characterized in that, comprise nut, sealing rubber ring, upper steel plate, lower steel plate; Upper steel plate and nut are placed on lower steel plate, and the upper surface of upper steel plate is connected with the lower surface of nut, is provided with sealing rubber ring between upper steel plate and lower steel plate.
2. the method for extruding rubber sealing device pickling bimetallic seamless steel pipe internal surface as claimed in claim 1, is characterized in that, comprise the following steps:
1) bimetallic seamless steel pipe is winched to pickling frock position;
2) bimetallic seamless steel pipe two ends are added extruding rubber sealing device, and extruding rubber sealing device not limiting by bimetallic seamless steel pipe length, energy disposablely puts into >=bimetallic seamless steel pipe of 1;
3) tighten the nut of extruding rubber sealing device, the extruding of upper steel plate, lower steel plate makes sealing rubber ring outwards expand;
4) during the quantity > 1 of bimetallic seamless steel pipe, first bimetallic seamless steel pipe rigidity capsule acid inlet is connected logical acid system, acid mouth connects second bimetallic seamless steel pipe acid inlet, is connected to last acid mouth successively and connects acid solution accumulator tank;
5) acid solution accumulator tank connects logical acid system;
6) open logical sour valve and start pickling bimetallic seamless steel pipe internal surface;
7) after pickling completes, close logical sour valve, after the acid solution until more than 70% flows out, lax nut, makes the pressure release of extruding rubber sealing device shrink, and in bimetallic seamless steel pipe, residual acid solution flows out recycling between gap.
3. the method for extruding rubber sealing device pickling bimetallic seamless steel pipe internal surface according to claim 1, it is characterized in that, the outer layer metal pipe material of described bimetallic seamless steel pipe is carbon steel, low alloy steel or alloyed steel, and inner layer metal pipe material is high alloy steel, stainless steel or nickel-base alloy.
4. the method for extruding rubber sealing device pickling bimetallic seamless steel pipe internal surface according to claim 1, is characterized in that, extrude the rubber extruded swell increment 2 ~ 5mm of rubber sealing device in described step 3).
5. the method for extruding rubber sealing device pickling bimetallic seamless steel pipe internal surface according to claim 1, is characterized in that, extrude the acid inlet of rubber sealing device lower than acid mouth 15 ~ 40mm in described step 4).
6. the method for extruding rubber sealing device pickling bimetallic seamless steel pipe internal surface according to claim 1, is characterized in that, opens logical sour valve and starts pickling bimetallic seamless steel pipe internal surface, logical acid fracturing power 0.8 ~ 1.8MPa in described step 6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610043041.8A CN105508604A (en) | 2016-01-23 | 2016-01-23 | Extrusion rubber sealing device and method for acid pickling of inner surfaces of bimetallic seamless steel pipes by extrusion rubber sealing devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610043041.8A CN105508604A (en) | 2016-01-23 | 2016-01-23 | Extrusion rubber sealing device and method for acid pickling of inner surfaces of bimetallic seamless steel pipes by extrusion rubber sealing devices |
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| Publication Number | Publication Date |
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| CN105508604A true CN105508604A (en) | 2016-04-20 |
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| CN201610043041.8A Pending CN105508604A (en) | 2016-01-23 | 2016-01-23 | Extrusion rubber sealing device and method for acid pickling of inner surfaces of bimetallic seamless steel pipes by extrusion rubber sealing devices |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014029162A (en) * | 2012-07-31 | 2014-02-13 | Hitachi Appliances Inc | Sealing structure and compressor |
| CN104451751A (en) * | 2014-11-12 | 2015-03-25 | 邯郸新兴特种管材有限公司 | Air inflation capsule device and application method of air inflation capsule device |
| CN104962934A (en) * | 2015-06-05 | 2015-10-07 | 邯郸新兴特种管材有限公司 | Method for inner surface acid washing of bimetal composite steel pipes by using rigid inflation capsules |
| CN204805532U (en) * | 2015-05-27 | 2015-11-25 | 江阴市巨匠文化创意发展有限公司 | Body tip seal assembly |
| CN204828656U (en) * | 2015-07-27 | 2015-12-02 | 龙岩盛丰机械制造有限公司 | Airtight end cap in axle housing body end |
-
2016
- 2016-01-23 CN CN201610043041.8A patent/CN105508604A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014029162A (en) * | 2012-07-31 | 2014-02-13 | Hitachi Appliances Inc | Sealing structure and compressor |
| CN104451751A (en) * | 2014-11-12 | 2015-03-25 | 邯郸新兴特种管材有限公司 | Air inflation capsule device and application method of air inflation capsule device |
| CN204805532U (en) * | 2015-05-27 | 2015-11-25 | 江阴市巨匠文化创意发展有限公司 | Body tip seal assembly |
| CN104962934A (en) * | 2015-06-05 | 2015-10-07 | 邯郸新兴特种管材有限公司 | Method for inner surface acid washing of bimetal composite steel pipes by using rigid inflation capsules |
| CN204828656U (en) * | 2015-07-27 | 2015-12-02 | 龙岩盛丰机械制造有限公司 | Airtight end cap in axle housing body end |
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Application publication date: 20160420 |
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