CN104313254B - A kind of plasma technology carries out method and the equipment of bend pipe inner surface treatment - Google Patents
A kind of plasma technology carries out method and the equipment of bend pipe inner surface treatment Download PDFInfo
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- CN104313254B CN104313254B CN201410597276.2A CN201410597276A CN104313254B CN 104313254 B CN104313254 B CN 104313254B CN 201410597276 A CN201410597276 A CN 201410597276A CN 104313254 B CN104313254 B CN 104313254B
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- plasma
- bend pipe
- cantilever
- support arm
- telescopic support
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The present invention discloses a kind of method of plasma treatment bend pipe internal surface, and the method is: regulate plasma gun clamping cantilever close with the shape of process pipeline; Plasma gun head moves to the other end along elbow internal wall from one end; Plasma gun rotates proper angle; Plasma gun head is along elbow internal wall reversing motion to initial end; Plasma gun is pressed original direction and is continued to rotate proper angle; Repeat above-mentioned motion, until whole process completes. The present invention discloses a kind of plasma apparatus being suitable for the method and carrying out processing, and equipment adapts to cantilever, rotation platform composition primarily of small-sized plasma torch, spray gun swivel arrangement, telescopic support arm, camber. The method carrying out bend pipe inner surface treatment with plasma technology provided can be used in the plasma surface treatment of different curved footpaths arc pipe inwall from equipment, improves the material behavior of bend pipe internal surface, extends bend pipe work-ing life.
Description
Technical field
The invention belongs to heat plasma technology field, it is specifically related to method and equipment that a kind of plasma technology carries out bend pipe inner surface treatment.
Background technology
Thermal plasma is by utilizing extra electric field or high-frequency induction electric field, makes gaseous conduction and ionizes and produce, and its main component is electronics, ion, neutral particle and photon four kinds of particles. After heat plasma technology mainly utilizes effect by compression, material is carried out various processing by the plasma jet of high temperature and high speed. Thermal plasma is more much higher than the gas temperature that usual combustion system can reach, its energy density be only second to laser and electron beam and heat plasma technology to have equipment simple, equipment cost is low, continuous throughput is strong, security advantages of higher, is more suitable for dropping into large-scale industrial production and uses.
It is extremely fast that plasma surface quench has rate of heating, heat affected zone is very little, speed of cooling also quickly waits outstanding advantage, after hard surfacing, workpiece can form the quenching structure of meticulous densification, increase substantially surface hardness and the wear resistance of workpiece, and workpiece deformation is very little, it is not necessary to straightening can carry out following process assembly process, it it is a kind of ideal quenching method. The coating structure densification of plasma spraying is smooth, and coat-thickness can accurately control, and spray efficiency height has the advantage that other conventional spray paint do not reach.
Current plasma surface quench is mainly used in the revolution steel part of the smooth steel part of any surface finish or symmetrical configuration, for bend pipe hard surfacing process is the outside surface concentrating on bend pipe mostly, the process of internal surface is relatively less, and difficulty is also bigger, cost is relatively high, and plasma spraying also has identical limitation.
Material surface physics, chemical property are required very high by inner-walls of duct. Especially the internal surface of bend pipe bears bigger shock load, and its abrasion is even more serious. But little for the treatment process that carried out by bend pipe internal surface, this makes the consumable accessory that bend pipe becomes in pipeline, and its duration of service is shorter, and changes inconvenient, and industrial production is had disadvantageous effect.
Summary of the invention
It is an object of the invention to: for the problems referred to above, a kind of plasma technology is provided to carry out method and the equipment of bend pipe inner surface treatment, the plasma surface treatment technology with good process effect is used for bend pipe inner surface treatment, improve the physicochemical property of bend pipe internal surface, and then extend the work-ing life of bend pipe in industry, save metals resources.
Providing a kind of method of plasma treatment bend pipe internal surface, the method is:
(1) regulate plasma gun clamping cantilever close with the shape of process pipeline;
(2) plasma gun head moves to the other end along elbow internal wall from one end;
(3) plasma gun rotates proper angle;
(4) plasma gun head is along elbow internal wall reversing motion to initial end;
(5) original direction continuation rotation proper angle pressed by plasma gun;
(6) motion of above-mentioned 2-5 is repeated, until whole process completes.
Plasma technology bend pipe Inwall treating equiment according to the method described above is made up of small-sized plasma torch (4), spray gun swivel arrangement (5), telescopic support arm (8), camber adaptation cantilever (6), rotation platform (3), telescopic support arm and camber adapt to cantilever and are connected through the hinge, telescopic support arm is connected on rotation platform, small-sized plasma torch and spray gun swivel arrangement formation are rotatably connected, and are connected in camber by spray gun swivel arrangement and adapt on cantilever.
According to above-mentioned plasma technology bend pipe Inwall treating equiment, it is characterised in that: camber adapts to cantilever and adopts multi-segment structure, is connected through the hinge, and each section is hollow structure between section and section, and its hollow hinge segment structure number is 8 ~ 15.
Cantilever is adapted to, it is possible to by adjustment cantilevered member so that it is cantilever integrally bending degree is close with pending elbow curvature degree, and the inner surface of pipeline in the curved footpath of difference can be carried out plasma quenching art breading by such system according to above-mentioned camber.
Adapting to cantilever according to the camber described in such scheme, its hollow structure can facilitate the various water, electricity, gas pipelines placed and need when plasma torch works wherein. Meanwhile, adapting to cantilever according to above-mentioned camber, its cantilever is built-in with water composite cooling pipe, is used for reducing pipeline hyperthermia radiation to the ablation of water, electricity, gas pipe.
According to above-mentioned plasma technology bend pipe Inwall treating equiment, it is characterised in that: telescopic support arm adopts hollow nesting structure (such as Fig. 2), and telescopic support arm hollow nested section of number is 3 ~ 8. Adapt to the bend pipe of different radii by adjustment retractable support arm extrusion, expand system process elbow radius specification scope.
Plasma technology bend pipe Inwall treating equiment provided by the invention, can be used on the plasma surface quench of elbow internal wall, plasma surface treatment technology good for process effect is used for bend pipe inner surface treatment, improve the physical properties of bend pipe internal surface, and then extend the work-ing life in life and industry field of bend pipe, reducing costs, save metals resources, this equipment just can carry out spraying operation with plasma spraying technology after adding powder conveyer on plasma gun. The adaptedness height of this treatment facility, it is possible to meet the surface treatment of the elbow internal wall of plurality of specifications.
Accompanying drawing explanation
Fig. 1 is the bend pipe inner surface treatment plasma system schematic diagram of the present invention.
Fig. 2 is the structural principle schematic diagram of the telescopic support arm of the present invention.
Fig. 3 is plasma jet part track stretch-out view.
Wherein: 1 worktable, 2 work holders, 3 rotation platforms, 4 small-sized plasma torchs, 5 spray gun swivel arrangements, 6 cambers adapt to cantilever, 7 pending bend pipes, 8 telescopic support arm.
Embodiment
For better explaining and the present invention is described, below in conjunction with drawings and Examples, the present invention will be further described. It is to be understood that specific embodiment described herein is only in order to explain the present invention, it is not intended to limit the present invention.
With reference to the accompanying drawings 1, the plasma technology bend pipe Inwall treating equiment that the present invention relates to, adjustment work holder (2) before work, the center of circle of pending bend pipe (7) is overlapped with the center of circle of rotation platform (3), then the length of telescopic support arm (8) is adjusted, make the length of telescopic support arm equal to the distance in the center of circle of rotation platform (3) with bend pipe tangent plane center, finally adjust camber adaptation cantilever (6) and make its pin joint all the time on pending bend pipe (7) tangent plane center circle camber line (i.e. identical radian measure).
Such as Fig. 3, when bend pipe inner surface treatment plasma system works, plasma jet moves to the other end along inner-walls of duct from one end, under the effect of spray gun swivel arrangement (5), plasma gun is rotated, when spray gun moves to initial end, under the effect of spray gun swivel arrangement, plasma gun continues to press original direction and rotates, and system repeats motion above until whole process completes. This system is applicable to the surface treatment of different curved footpaths inner-walls of duct.
The foregoing is only the embodiment of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. done within the spirit and principles in the present invention, all should be included within protection scope of the present invention.
Claims (4)
1. a method for plasma treatment bend pipe internal surface, the method is:
(1) regulate plasma gun clamping cantilever close with the shape of process pipeline;
(2) plasma gun head moves to the other end along elbow internal wall from one end;
(3) plasma gun rotates proper angle;
(4) plasma gun head is along elbow internal wall reversing motion to initial end;
(5) original direction continuation rotation proper angle pressed by plasma gun;
(6) motion of above-mentioned steps (2)-step (5) is repeated, until whole process completes.
2. the treatment facility of the plasma treatment bend pipe internal surface of method according to claim 1, it is made up of small-sized plasma torch (4), spray gun swivel arrangement (5), telescopic support arm (8), camber adaptation cantilever (6), rotation platform (3), telescopic support arm (8) and camber adapt to cantilever and are connected through the hinge, telescopic support arm (8) is connected on rotation platform (3), small-sized plasma torch (4) is rotatably connected with spray gun swivel arrangement (5) formation, and is connected in camber by spray gun swivel arrangement (5) and adapts on cantilever (6).
3. the treatment facility of plasma treatment bend pipe internal surface according to claim 2, it is characterized in that: described camber adapts to cantilever (6) and adopts multi-segment structure, being connected through the hinge between section and section, and each section is hollow structure, its hollow hinge segment structure number is 8 ~ 15.
4. the treatment facility of plasma treatment bend pipe internal surface according to claim 2, it is characterised in that: described telescopic support arm (8) adopts hollow nesting structure, and telescopic support arm hollow nested section of number is 3 ~ 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410597276.2A CN104313254B (en) | 2014-10-31 | 2014-10-31 | A kind of plasma technology carries out method and the equipment of bend pipe inner surface treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410597276.2A CN104313254B (en) | 2014-10-31 | 2014-10-31 | A kind of plasma technology carries out method and the equipment of bend pipe inner surface treatment |
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| Publication Number | Publication Date |
|---|---|
| CN104313254A CN104313254A (en) | 2015-01-28 |
| CN104313254B true CN104313254B (en) | 2016-06-01 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD288996A5 (en) * | 1989-11-07 | 1991-04-18 | Dr Wissenschaftlich-Technisches Zentrum,De | DEVICE FOR WELDING AND / OR CUTTING IN LARGE-LAYER, PRISMATICALLY SHAPED PARTS, ESPECIALLY TO RAILROAD CARS |
| CN203664120U (en) * | 2014-01-24 | 2014-06-25 | 中国石化集团胜利石油管理局海上石油工程技术检验中心 | In-pipe anti-corrosion coating sprayer with guide mechanism |
| CN103990580A (en) * | 2014-05-26 | 2014-08-20 | 中海石油深海开发有限公司 | Stepping type paint-spraying device for cylindrical inner walls |
| CN204237817U (en) * | 2014-10-31 | 2015-04-01 | 四川大学 | A kind of plasma technology carries out the equipment of bend pipe inner surface treatment |
-
2014
- 2014-10-31 CN CN201410597276.2A patent/CN104313254B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD288996A5 (en) * | 1989-11-07 | 1991-04-18 | Dr Wissenschaftlich-Technisches Zentrum,De | DEVICE FOR WELDING AND / OR CUTTING IN LARGE-LAYER, PRISMATICALLY SHAPED PARTS, ESPECIALLY TO RAILROAD CARS |
| CN203664120U (en) * | 2014-01-24 | 2014-06-25 | 中国石化集团胜利石油管理局海上石油工程技术检验中心 | In-pipe anti-corrosion coating sprayer with guide mechanism |
| CN103990580A (en) * | 2014-05-26 | 2014-08-20 | 中海石油深海开发有限公司 | Stepping type paint-spraying device for cylindrical inner walls |
| CN204237817U (en) * | 2014-10-31 | 2015-04-01 | 四川大学 | A kind of plasma technology carries out the equipment of bend pipe inner surface treatment |
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| Publication number | Publication date |
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| CN104313254A (en) | 2015-01-28 |
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