CN102864317A - Sponge titanium reduction and distillation reactor sprayed with anti-oxidation layer on outer surface and spraying method - Google Patents
Sponge titanium reduction and distillation reactor sprayed with anti-oxidation layer on outer surface and spraying method Download PDFInfo
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- CN102864317A CN102864317A CN2011101918430A CN201110191843A CN102864317A CN 102864317 A CN102864317 A CN 102864317A CN 2011101918430 A CN2011101918430 A CN 2011101918430A CN 201110191843 A CN201110191843 A CN 201110191843A CN 102864317 A CN102864317 A CN 102864317A
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- distillation reactor
- oxidation layer
- spraying
- anti oxidation
- titanium sponge
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Abstract
The invention discloses a sponge titanium reduction and distillation reactor sprayed with an anti-oxidation layer on an outer surface and a spraying method. The outer surface of the barrel of the sponge titanium reduction and distillation reactor disclosed by the invention obtains the performances of resisting high temperature and resisting oxidation, the phenomena of high-temperature oxidation and scale cinders generated by the high-temperature oxidation can be thoroughly eradicated, and all defects brought by the oxidation and the scale cinders generated by high-temperature oxidation on the barrel of the sponge titanium reduction and distillation reactor are solved. The service life of the sponge titanium reduction and distillation reactor disclosed by the invention can be prolonged to be not less than 1.3-1.5 times of the original service life.
Description
Technical field
The present invention relates to the metallurgical production device of titanium sponge, particularly relate to a kind of titanium sponge reduction distillation reactor and spraying method of outside surface spraying anti oxidation layer.
Background technology
The cylindrical shell of existing titanium sponge reduction distillation reactor, its service condition is to work under high temperature (the highest～1050 ℃), vacuum (cylindrical shell external vacuum degree is low than internal vacuum), long-time (a reduction distillation process cycle about 15 days) state, and its main material adopts carbon constructional steel plate to be welded.
This cylindrical shell has the following disadvantages in production and application: although 1 cylindrical shell outside is in certain vacuum state, still serious oxidative phenomena can occur at whole reduction distillation process middle cylinder body outside surface, produce a large amount of oxide skin, and peel off and avalanche.Peel off with Caving process in oxide skin drop on the resistance wire and septulum brick of reduction distillation reactor process furnace, the oxide skin that drops on the resistance wire makes the resistance wire short circuit have a strong impact on the normal operation of titanium sponge reduction distillation technique.2, drop on resistance wire and the septulum brick and other finally drops to process furnace bottom oxide skin, need to 6 meters dark furnace bottoms it to be cleared up under the operator, clear up simultaneously the work of the oxide skin of furnace bottom and will wait until that the interior temperature of heating furnace drops to room temperature and just can carry out.3, peeling off of outside surface oxide skin makes the reactor shell wall thickness reduction, accelerated the creep elongation speed of reactor shell when high temperature, simultaneously, accelerated again the attenuate of reactor shell wall thickness, the work-ing life of seriously reducing reactor shell.
In sum, owing to produce oxide skin, the oxide skin of each process cycle generation 〉=300kg, serious work-ing life of reducing reactor shell, affect normally carrying out of titanium sponge reduction distillation reaction process process, prolong the titanium sponge reduction distillation production cycle, increase labour intensity and workload, improved priming cost and the indirectly attributable expense of Sponge Titanium.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of titanium sponge reduction distillation reactor and spraying method that prolongs outside surface spraying anti oxidation layer, oxidation in use occurs and produce oxide skin with the cylindrical shell that solves titanium sponge reduction distillation reactor in the prior art, titanium sponge reduction distillation reaction process process is normally carried out, titanium sponge reduction distillation reactor and the spraying method low problem in work-ing life of outside surface spraying anti oxidation layer thereby affect.
To achieve these goals, technical scheme of the present invention is as follows:
The titanium sponge reduction distillation reactor of outside surface spraying anti oxidation layer comprises the tubular body, it is characterized in that, at the outside surface spraying anti oxidation layer of described tubular body.
In a preferred embodiment of the invention, described anti oxidation layer is the metallurgical bonding layer of intermetallic compound.Further, in the present embodiment, the thickness of the metallurgical bonding layer of described intermetallic compound is 〉=0.35mm.
The method of the outside surface spraying anti oxidation layer of titanium sponge reduction distillation reactor is characterized in that, may further comprise the steps:
A, pending tubular body axis is lain in a horizontal plane on the electronic carrying roller, the velocity of rotation of electronic carrying roller can be carried out stepless frequency control;
Floating rust and the dirt of B, this external surface of removal tubular;
C, this external surface of tubular is carried out activation treatment;
D, with hot-spraying techniques to this external surface of tubular spraying aluminium or other high temperature material, make it obtain coating;
E, will spray good tubular body and carry out modification thermal treatment.
In step D, spray-on coating thickness is at 0.08-0.12mm.
Barrel outer surface of the present invention obtains excellent high temperature resistant, antioxidant property, thoroughly eradicate the phenomenon of the oxide skin of oxidation and generation thereof, solve all defect that brings because of the oxide skin of oxidation and generation thereof, can extend to 1.3-1.5 times that is not less than former work-ing life work-ing life of the present invention.
Description of drawings
Describe the present invention in detail below in conjunction with the drawings and specific embodiments:
Fig. 1 is synoptic diagram of the present invention.
Fig. 2 is diagrammatic cross-section of the present invention.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1 and 2, a kind of titanium sponge reduction distillation reactor and spraying method of outside surface spraying anti oxidation layer comprise tubular body 100, spray titanium sponge reduction distillation reactor and the spraying method 110 of anti oxidation layer at the outside surface of tubular body 100.In the present embodiment, anti oxidation layer is the metallurgical bonding layer of intermetallic compound, and its thickness is 〉=0.35mm.
It is as follows that this external surface of tubular specifically sprays step:
1, pending tubular body axis is lain in a horizontal plane on the electronic carrying roller, the velocity of rotation of electronic carrying roller can be carried out stepless frequency control.
2, remove floating rust and the dirt of this external surface of tubular with the method for steel brush or sandblast.
3, this external surface of tubular is carried out activation treatment.
4, (comprise oxygen-acetylene flame sprayed coating, surfacing with hot-spraying techniques, electric arc spraying, plasma spraying) to this external surface of tubular spraying aluminium or other high temperature material (comprising nickel and alloy thereof, chromium-nickel alloy, nickel alclad, nickel package alumina, nickel bag chromium carbide), make it obtain coating, the metallic substance before spraying be its thread or powder, the about 200-250mm of spray distance.The spray-on coating thickness requirement is even, and gauge control is at 0.08-0.12mm.
High temperature during spraying, at a high speed, the particle flux of melting, atomizing state sprays to through the carbon structure steel matrix after pre-treatment and the activation, when spray material is sprayed onto matrix during moment, fierce collision occurs and produces a large amount of heat energy in spray material and matrix, meanwhile entrained heat energy and the collision heat energy of spray material self makes matrix local melting or melting, spray material and matrix bind, fuse, and obtain cladding coating at matrix surface.Applying coating and carbon structure steel matrix form packed structures, and this moment, applying coating had anti-oxidant, resistant to elevated temperatures function.
5, the tubular body that outside surface is coated with aluminium and alloy thereof or other high temperature material coatings directly pack into heat treatment heating furnace carry out modification thermal treatment or with the assembling of reactor loam cake after, carry out simultaneously modification thermal treatment with the titanium technique of oozing of reactor in the reduction distillation process furnace of packing into.Modification thermal treatment can make some trickle micropore of spray-on coating be closed by sealing by fusing, simultaneously, bind with matrix, metallurgical chemical combination occurs to matrix internal divergence, infiltration in the coated material of fusion, forming with matrix mortise, thickness be the metallurgical bonding layer that 〉=0.35 metal is simplified compound, and coating has high temperature resistant (1100 ℃), long-time non-oxidizing excellent properties fully at this moment.
The modification thermal treatment process is as follows: 250 ℃ * 4 hours+350 ℃ * 1.5 hours+550 ℃ * 1.5 hours+650 ℃ * 2 hours+970 ℃ * 8 hours+furnace cooling.
6, to keep surface cleaning after the activation treatment, forbid hand to be touched, spray as early as possible operation, prevent from after the spraying colliding, scratching with the integrity of supercoat.
Barrel outer surface of the present invention obtains excellent high temperature resistant, antioxidant property, thoroughly eradicate the phenomenon of the oxide skin of oxidation and generation thereof, solve all defect that brings because of the oxide skin of oxidation and generation thereof, can extend to 1.3-1.5 times that is not less than former work-ing life work-ing life of the present invention.The present invention has very obvious, far-reaching Technological Economy meaning.The present invention comprises that at other field field of aerospace has obtained extensive successful Application.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and the specification sheets is principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the present invention.The protection domain that the present invention requires is defined by appending claims and equivalent thereof.
Claims (5)
1. the titanium sponge reduction distillation reactor of outside surface spraying anti oxidation layer comprises the tubular body, it is characterized in that, sprays titanium sponge reduction distillation reactor and the spraying method of anti oxidation layer at the outside surface of described tubular body.
2. the titanium sponge reduction distillation reactor of outside surface spraying anti oxidation layer according to claim 1 is characterized in that described anti oxidation layer is the metallurgical bonding layer of intermetallic compound.
3. the titanium sponge reduction distillation reactor of outside surface spraying anti oxidation layer according to claim 2 is characterized in that the thickness of the metallurgical bonding layer of described intermetallic compound is 〉=0.35mm.
4. the method for the outside surface of titanium sponge reduction distillation reactor spraying anti oxidation layer is characterized in that, may further comprise the steps:
A, pending tubular body axis is lain in a horizontal plane on the electronic carrying roller, the velocity of rotation of electronic carrying roller can be carried out stepless frequency control;
Floating rust and the dirt of B, this external surface of removal tubular;
C, this external surface of tubular is carried out activation treatment;
D, with hot-spraying techniques to this external surface of tubular spraying aluminium or other high temperature material, make it obtain coating;
E, will spray good tubular body and carry out modification thermal treatment.
5. the method for the outside surface of titanium sponge reduction distillation reactor according to claim 4 spraying anti oxidation layer is characterized in that in step D, spray-on coating thickness is at 0.08-0.12mm.
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| CN2011101918430A CN102864317A (en) | 2011-07-08 | 2011-07-08 | Sponge titanium reduction and distillation reactor sprayed with anti-oxidation layer on outer surface and spraying method |
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| CN2011101918430A CN102864317A (en) | 2011-07-08 | 2011-07-08 | Sponge titanium reduction and distillation reactor sprayed with anti-oxidation layer on outer surface and spraying method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060211A (en) * | 2014-03-24 | 2014-09-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Surface processing method and titanium sponge reductive distillation pot |
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| CN201568725U (en) * | 2009-08-17 | 2010-09-01 | 邹积强 | Spherical tank capable of preventing stress corrosion cracking |
| CN102011084A (en) * | 2010-12-24 | 2011-04-13 | 北京赛诺迪管道安全技术有限公司 | Alloy coating, processing method thereof and antiseptic spherical tank |
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| CN202246810U (en) * | 2011-04-29 | 2012-05-30 | 王西临 | Barrel for sponge titanium reduction distillation reactor |
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Patent Citations (5)
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|---|---|---|---|---|
| CN1641061A (en) * | 2005-01-10 | 2005-07-20 | 山东科技大学 | Ni(Fe)-Al series intermetallic compound coating preparing method |
| CN201568725U (en) * | 2009-08-17 | 2010-09-01 | 邹积强 | Spherical tank capable of preventing stress corrosion cracking |
| CN102102203A (en) * | 2010-12-20 | 2011-06-22 | 西安交通大学 | Preparation method of corrosion resistant FeAl intermetallic compound-based composite structure coating |
| CN102011084A (en) * | 2010-12-24 | 2011-04-13 | 北京赛诺迪管道安全技术有限公司 | Alloy coating, processing method thereof and antiseptic spherical tank |
| CN202246810U (en) * | 2011-04-29 | 2012-05-30 | 王西临 | Barrel for sponge titanium reduction distillation reactor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104060211A (en) * | 2014-03-24 | 2014-09-24 | 攀钢集团攀枝花钢铁研究院有限公司 | Surface processing method and titanium sponge reductive distillation pot |
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Application publication date: 20130109 |