CN110131525A - A kind of laminar flow collector restorative procedure of cooling facility for laminar flow - Google Patents
A kind of laminar flow collector restorative procedure of cooling facility for laminar flow Download PDFInfo
- Publication number
- CN110131525A CN110131525A CN201810133243.0A CN201810133243A CN110131525A CN 110131525 A CN110131525 A CN 110131525A CN 201810133243 A CN201810133243 A CN 201810133243A CN 110131525 A CN110131525 A CN 110131525A
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- CN
- China
- Prior art keywords
- laminar flow
- cooling facility
- restorative procedure
- collector
- flow collector
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
- F16L58/04—Coatings characterised by the materials used
- F16L58/08—Coatings characterised by the materials used by metal
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
The invention discloses a kind of laminar flow collector restorative procedures of cooling facility for laminar flow, by setting about inside and outside laminar flow collector, sandblast aluminium dust is respectively adopted and brushes the means such as meteorological antirust agent, to greatly strengthen Corrosion Protection, and construction is simple is convenient, it is changed without whole, is able to carry out quick reparation, reduce the influence to hot rolling overall operation.
Description
Technical field
The present invention relates to the recovery techniques of tubing, more specifically refer to a kind of laminar flow collector reparation side of cooling facility for laminar flow
Method.
Background technique
The hot rolling tandem rolling machine production line of domestic and international iron and steel enterprise will use and arrive cooling facility for laminar flow, and major function is exactly
The strip that finish rolling is exported, is rapidly cooled, to guarantee the properties of product of strip according to the target temperature for batching setting.
By taking certain domestic 2050 hot rolling mill as an example, with continuous development, kind is produced, specification is gradually expanded, current product
Structure with it is completely different when going into operation, go into operation initial stage based on straight carbon steel, at present main production micro alloyed steel and carbon manganese steel.It is existing
Some cooling facility for laminar flow, with the continuous continuous improvement expanded and user requires product quality of rolling line rolling specs,
Be not able to satisfy part steel grade production needs, more especially containing alloying element strength steel (such as: BS600, BS700,
B510L, S45C, SS400 etc.).These strength steels are after section cooling region, since existing cooling facility for laminar flow is deposited
The inhomogeneous cooling of strip is caused the problems such as hydraulic pressure is unstable, water-flow equation is uneven, a series of plates occurs so as to cause strip
Shape quality problems repeatedly find that strip C as caused by inhomogeneous cooling is stuck up and width direction is cooling not in rolling line production process
Plate deformation caused by, especially edge temperature reduce bigger can generate in subsequent cooling procedure and bring in bilateral unrestrained trend
Stress can all bring very big influence in the uniformity of width direction to plate shape, mechanical performance, temperature and the phase transformation of strip.
Incorporated by reference to shown in FIG. 1 to FIG. 2, cooling facility for laminar flow 1 is mainly that the laminar flow collector 2 by bottom supplies water, in reality
It being found in the use process of border, 20 points of the laminar flow collector easily corrodes, once corrosion, it is necessary to integral replacing, it is cumbersome, and
Strong influence production task.
Summary of the invention
The purpose of the present invention is in view of the foregoing drawbacks, provide a kind of laminar flow collector restorative procedure of cooling facility for laminar flow, energy
It is enough that laminar flow collector is quickly repaired, and greatly improve its corrosion resistance.
To achieve the goals above, the present invention uses following technical scheme.
A kind of laminar flow collector restorative procedure of cooling facility for laminar flow, comprising the following steps:
A. in laminar flow manifold inner wall sandblast aluminium dust；
B. in one layer of stainless steel sleeve of laminar flow collector outside weldings, and one layer of sky is formed between laminar flow collector and stainless steel sleeve
Chamber；
C., protective layer is set in cavity；
D. by cavity welded seal.
In step, pyrolytic coating aluminium powder is carried out to laminar flow manifold inner wall using High Speed Electric Arc Spraying machine, coating thickness is
0.5~1.0mm.
In stepb, the stainless steel sleeve with a thickness of 1~6mm.
In step C, the protective layer is meteorological antirust agent.
The meteorological antirust agent is pulvis or anti-tarnish paper.
The pulvis is blown into using compressed air.
In step C, the protective layer is the fire proofing that infiltration has meteorological antirust agent.
The fire proofing is fire-retardant heat insulation cotton.
The fire-retardant heat insulation cotton is made of glass fiber material or aluminosilicate material.
The meteorological antirust agent is liquor or pulvis.
In above-mentioned technical proposal of the invention, the laminar flow collector restorative procedure of cooling facility for laminar flow of the invention passes through
Set about inside and outside laminar flow collector, sandblast aluminium dust is respectively adopted and brushes the means such as meteorological antirust agent, to greatly strengthen anti-
Corrosive nature, and construction is simple is convenient, changes without whole, is able to carry out quick reparation, reduces the shadow to hot rolling overall operation
It rings.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of cooling facility for laminar flow of the invention；
Fig. 2 is the line A-A cross-sectional view in Fig. 1；
Fig. 3 is the partial enlargement diagram of the laminar flow collector in Fig. 2.
Specific embodiment
Technical solution of the present invention is further illustrated with reference to the accompanying drawing.
The laminar flow collector restorative procedure of cooling facility for laminar flow of the invention is as shown in figure 3, it is mainly comprised the steps that
A. in 2 inner-wall spraying aluminium powder of laminar flow collector, aluminium powder internal layer 3 is formed；
B. in one layer of stainless steel sleeve 5 of laminar flow collector outside weldings, and one layer is formed between laminar flow collector and stainless steel sleeve 5
Cavity；
C., protective layer 4 is set in cavity；
D. by cavity welded seal.
In step, pyrolytic coating aluminium powder, coating thickness are carried out to 2 inner wall of laminar flow collector using High Speed Electric Arc Spraying machine
For 0.5~1.0mm.
In stepb, the stainless steel sleeve 5 with a thickness of 1~6mm, and with 2 phase of laminar flow collector weld, welding procedure
It is as follows:
1. before equipment processing, by equipment derusting by sandblasting, being polished weld seam, being cleaned with cleaning agent, weld part before welding
Position, which should be polishing to, exposes metal true qualities.
2. pressing the blanking of size shear, bending, processing rolling internal diameterS30408 semi-circular tube, with's
20# steel pipe pair, and spot welding is fixed.
3. carrying out in strict accordance with welding procedure and welding guiding book, welding method: gas tungstun arc welding protects gas
Body is argon gas, purity 99.99%, wlding:H12Cr24Ni13Si, electric current type: direct current, current polarity: just connecing, welding electricity
It flows (A): 80~100, arc voltage (V): 10~16,8~10L/min of argon flow, weld seam: 3.5mm.
In the place for having wind, backstop measure is taken, then takes ventilation measure appropriate indoors.
4. pair Dissimilar Steel Welded Joint carries out 100%PT detection, by NB/T47013.5-2015, I grades qualified.
5. the packaging of equipment and transport are carried out by JB/T4711-2003 standard.
In step C, the protective layer 4 can directly adopt meteorological antirust agent (VCI).The meteorological antirust agent can be with
For pulvis or anti-tarnish paper or other meteorological antirust agent, the pulvis can be used such as Shanghai and surmount Chemical Company's production
QW-20 antirust agent pulvis, the mode that compressed air is blown into can be used and be blown into from stainless steel layer reserved opening, and anti-tarnish paper can be direct
It is placed in from reserved opening.
In step C, the fire proofing that infiltration has meteorological antirust agent is can also be used in the protective layer 4, can play thermal insulation
The effect of heat preservation reduces the invalid volatilization of meteorological antirust agent pulvis.The fire proofing can be the materials such as fire-retardant heat insulation cotton.
The fire-retardant heat insulation cotton can be used the materials such as glass fiber material or aluminosilicate material and be made.The meteorological antirust agent is optional
With liquor, pulvis or other forms.
It should be noted that: VCI is the English of vapour phase inhibitor (Volatile Corrosion Inhibitor)
Abbreviation is a kind of corrosion inhibitor being prepared through special synthesis technology, compounding.It can be independent or depends on suitable load
Body, at normal temperatures and pressures direct gasification.Made in operation unit in sealed environment by itself adjustable lasting volatilization
Any spatial gaps in, can all fill the mixed gas containing the VCI antirust factor, this gas can be inhaled when meeting with metal surface
It is attached thereon, form the fine and close protective film layer of only one or several molecule thicks.The protective film layer can effectively completely cut off metal surface with
The contact of moisture, oxygen and other hazardous atmosphere corrosion factors inhibits the generation for promoting the electrochemical reaction of metal erosion, thus
Reach optimal anti-corrosion effect.
This novel rush-resisting material, as the technology and concept of a kind of high-tech antirust preservation of packaged product, derived from the
The Military Application in World War II later period is tested.Due to its commercial plant antirust preservation processing on have it is rapid, simple, low at
This characteristics of, especially meets environmental requirement, is more paid attention in recent years, and be directed to antirust ability and safety the problems such as into
It has gone and has furtherd investigate and improve, made gas-phase rustproof packaging material up to cause commercialization promotion and application.
Compared with traditional rust-proofing method, VCI volatile rust preventive material has the advantages that many incomparable.In metal material
Packaging or spraying after the completion of, vapor phase corrosion inhibitor agent molecule just starts to dissipate, vapor phase corrosion inhibitor agent molecule may penetrate into traditional antirust oil without
The corner space of method covering, antirust is without dead angle；Vapor phase corrosion inhibitor molecule effective component retention time is long, it can be achieved that 10 years or more anti-
It becomes rusty the protection period；Even if metal surface has moisture or outside air very moist, antirust agent can also be formed in metal surface and be protected
Film prevents metal to be corroded and gets rusty；The air permeability and moisture permeability of manufactured rustproof packaging material are extremely low, have waterproof, moisture-proof, resistance to
The characteristic of oil, chemical-resistant resistance.Especially when packing metal material, mechanical equipment and part, do not had to using vapor phase inhibitor
Antirust oil is smeared, also need not in addition handle, enormously simplify etch-proof tedious steps, compared with vacuum packaging, both realize
Special corrosion proof function, and packing cost is reduced, artificial and material is saved, is improved efficiency.In addition, the spy of this rust-proofing method
Different advantage, rust-proof effect are comprehensive.No matter metal surface rule whether, can it is comprehensive prevent from corroding, do not stay any dead angle.Antirust
Time limit is long.It is generally 2~5 years, specially treated, up to 10 years or more.It is easy to operate, save the works such as oiling, oil removing and cleaning
Sequence.Saving of work and time improves work efficiency, save the cost.
The unimolecule protective layer 4 formed after VCI gasification, will not damage the material of metal product, without any side effects.Antirust
Performance is distinguished, even in the high corrosion atmospheric environment high in salt of the high temperature and humidity as transport by sea, can also make to be protected
Metal is protected to encroach on from corrosion.It is not only suitable for ferrous metal use, and the sub-assembly for being also applied for non-ferrous metal or both,
Client's buying and inventory cost is effectively reduced.Use scope is extensive, as low as single part, arrive whole equipment greatly, can be easily real
Existing antirust target.Transparency is high, by protective article for cell dynamic visual.It is hygienic, safe and environment-friendly.Injury will not be generated to human body, it will not
Cause environmental pollution.
Have the advantages that these just because of gas-phase rustproof packaging material, thus obtains and be more and more widely used current VCI
Mainly have using form existing for volatile rust prevention product:
1, it is sealed after vapour phase inhibitor powder being directly sprayed on metalwork surface with atomizing type.
2, it dries, seal with volatile rust prevention liquid spray, brushing or after impregnating.
3, it is sealed after metalwork after being packed with volatile rust preventive paper, gas phase anti-tarnishing film/bag.
4, sheet, ingot shape, pellet is made in vapour phase inhibitor, is placed in container or polybag with the mode of hanging bag.
5, it will be sealed after the processed buffering of vapour phase inhibitor or gasket material and metalwork are put together.
6, vapour phase inhibitor is mixed into resin, the packing container of various suitable needs is made, metalwork is placed in one
Sealing.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as the change in spirit of the invention, to embodiment described above
Change, modification will all be fallen within the scope of claims of the present invention.
Claims (10)
1. a kind of laminar flow collector restorative procedure of cooling facility for laminar flow, it is characterised in that: the following steps are included:
A. in laminar flow manifold inner wall sandblast aluminium dust；
B. in one layer of stainless steel sleeve of laminar flow collector outside weldings, and one layer of cavity is formed between laminar flow collector and stainless steel sleeve；
C., protective layer is set in cavity；
D. by cavity welded seal.
2. the laminar flow collector restorative procedure of cooling facility for laminar flow as described in claim 1, it is characterised in that: in step, adopt
Pyrolytic coating aluminium powder is carried out to laminar flow manifold inner wall with High Speed Electric Arc Spraying machine, coating thickness is 0.5~1.0mm.
3. the laminar flow collector restorative procedure of cooling facility for laminar flow as described in claim 1, it is characterised in that: in stepb, institute
The stainless steel sleeve stated with a thickness of 1~6mm.
4. the laminar flow collector restorative procedure of cooling facility for laminar flow as described in claim 1, it is characterised in that: in step C, institute
The protective layer stated is meteorological antirust agent.
5. the laminar flow collector restorative procedure of cooling facility for laminar flow as claimed in claim 4, it is characterised in that: the meteorology is anti-
Agent of becoming rusty is pulvis or anti-tarnish paper.
6. the laminar flow collector restorative procedure of cooling facility for laminar flow as claimed in claim 5, it is characterised in that: the pulvis is adopted
It is blown into compressed air.
7. the laminar flow collector restorative procedure of cooling facility for laminar flow as described in claim 1, it is characterised in that: in step C, institute
The protective layer stated is the fire proofing that infiltration has meteorological antirust agent.
8. the laminar flow collector restorative procedure of cooling facility for laminar flow as claimed in claim 7, it is characterised in that: the fire-retardant material
Material is fire-retardant heat insulation cotton.
9. the laminar flow collector restorative procedure of cooling facility for laminar flow as claimed in claim 7, it is characterised in that: the fire-retardant guarantor
Wen Mianwei glass fiber material or aluminosilicate material are made.
10. the laminar flow collector restorative procedure of cooling facility for laminar flow as claimed in claim 7, it is characterised in that: the meteorology
Antirust agent is liquor or pulvis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810133243.0A CN110131525A (en) | 2018-02-09 | 2018-02-09 | A kind of laminar flow collector restorative procedure of cooling facility for laminar flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810133243.0A CN110131525A (en) | 2018-02-09 | 2018-02-09 | A kind of laminar flow collector restorative procedure of cooling facility for laminar flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110131525A true CN110131525A (en) | 2019-08-16 |
Family
ID=67567785
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810133243.0A Pending CN110131525A (en) | 2018-02-09 | 2018-02-09 | A kind of laminar flow collector restorative procedure of cooling facility for laminar flow |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064439A (en) * | 1992-03-23 | 1992-09-16 | 第九冶金建设公司机电安装工程公司化工设备厂 | Steel-plastic composite pipe |
| CN1352364A (en) * | 2000-11-09 | 2002-06-05 | 上海电力学院 | Anti-scale ceramic glass fiber reinforced plastics composite pipeline |
| CN202733332U (en) * | 2012-02-13 | 2013-02-13 | 新兴铸管股份有限公司 | Anti-abrasion anti-corrosion metal pipeline coating |
| CN105156838A (en) * | 2015-09-21 | 2015-12-16 | 常州大学 | Corrosion resistance method of buried casing internal pipeline |
-
2018
- 2018-02-09 CN CN201810133243.0A patent/CN110131525A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064439A (en) * | 1992-03-23 | 1992-09-16 | 第九冶金建设公司机电安装工程公司化工设备厂 | Steel-plastic composite pipe |
| CN1352364A (en) * | 2000-11-09 | 2002-06-05 | 上海电力学院 | Anti-scale ceramic glass fiber reinforced plastics composite pipeline |
| CN202733332U (en) * | 2012-02-13 | 2013-02-13 | 新兴铸管股份有限公司 | Anti-abrasion anti-corrosion metal pipeline coating |
| CN105156838A (en) * | 2015-09-21 | 2015-12-16 | 常州大学 | Corrosion resistance method of buried casing internal pipeline |
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Application publication date: 20190816 |