CN1247814C - Anticorrosion prestressed bars and its manufacture - Google Patents
Anticorrosion prestressed bars and its manufacture Download PDFInfo
- Publication number
- CN1247814C CN1247814C CN 02128318 CN02128318A CN1247814C CN 1247814 C CN1247814 C CN 1247814C CN 02128318 CN02128318 CN 02128318 CN 02128318 A CN02128318 A CN 02128318A CN 1247814 C CN1247814 C CN 1247814C
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- blackening
- blackout
- high tensile
- steel wire
- steel
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Abstract
The present invention relates to a corrosion prevention prestress rib. A blackening steel rib, a blackening steel wire of high strength and a blackening steel stranded wire which are respectively provided with a specific oxidation corrosion-prevention layer are formed on the outer surface of prestress ribs, such as an ordinary steel rib, a steel wire of high strength, a steel stranded wire with smooth surface, etc. after the prestress ribs are treated by a surface blackening technique; the surface blackening technical treated method uses normal-temperature sensitization blackening agents for the steel surface to carry out blackening technique treatment to the prestress rib, and the method comprises the procedures of pretreating, washing once, sensitizing, washing twice, blackening, washing for the third time, post treating, baking, etc. Compared with the corrosion prevention properties of the ordinary steel rib, the steel wire of high strength, the steel stranded wire with smooth surface and a stranded galvanized steel wire, the corrosion prevention properties of the corrosion prevention prestress rib are greatly improved. Under the condition of the same performance indexes, the cost for raw materials, processing and manufacturing is lower than that of spraying and coating the steel stranded wire; the performance price ratio of the product of the present invention is higher than that of spraying and coating the steel stranded wire. The used surface blackening technical treated method has the advantages of stable ingredient of film layers, favorable adhesive force, no toxicity or bad smell of blackening agent and discharge, no irritating smell, etc. The method is favorable for the control on the quality.
Description
One, technical field:
The present invention relates to the member that a kind of prestress engineering is used, particularly the Anticorrosion inherent stress Tendon And Manufacturing Approach used of prestressed concrete construction engineering.
Two, background technology:
The presstressed reinforcing steel that existing prestressed concrete construction engineering is used, generally comprise reinforcing bar, High Tensile Steel Wire, steel strand, it is several that the steel strand that adopt can be divided into plain bar twisted wire, Stranded Galvanized Steel Wire, spraying steel strand etc., be applicable to different execution conditions and engineering design requirement, the deficiency that above product exists is:
One: regular reinforcement, High Tensile Steel Wire, plain bar twisted wire outside surface are not done special rotproofing, and antiseptic property is poor, and in the construction environment, very easily corrosion influences its use properties, causes the waste of material simultaneously at the scene;
Its two: Stranded Galvanized Steel Wire outside surface plating zinc layer has certain antiseptic property; But easy and concrete generation chemical reaction is accelerated the corrosion of steel strand in concrete structure, influences the security of entire structure;
Its three: the spraying steel strand are impregnating material such as PE in outside surface spraying, and good antiseptic property is arranged; But the manufacturing cost height, the production cycle is long; And the construction and installation process is loaded down with trivial details, and the quality of construction crew is had very high requirement, thereby makes the construction period lengthening, and construction costs increases.
Three, summary of the invention:
The technical problem to be solved in the present invention is: solve the anticorrosion good but manufacturing cost height of existing regular reinforcement as presstressed reinforcing steel, High Tensile Steel Wire, plain bar twisted wire antiseptic property difference and spraying steel strand, the production cycle is long, the construction and installation process is loaded down with trivial details problem, a kind of good product performance, with short production cycle, manufacturing, Anticorrosion inherent stress Tendon And Manufacturing Approach that construction cost is low are provided.
Its solution is: common reinforcing bar, High Tensile Steel Wire, plain bar twisted wire and so on common presstressed reinforcing steel is formed the special oxidation preservative coat of one deck by surperficial outside reinforcing bar, High Tensile Steel Wire, steel strand after the surface blackening art breading, thereby improve its antiseptic property.
Its concrete technical scheme is: the anticorrosion prestressed bars that a kind of prestressed concrete construction engineering is used, it is characterized in that: described anticorrosion prestressed bars is a kind of with after regular reinforcement, High Tensile Steel Wire or the plain bar twisted wire process surface blackening art breading, is formed with one deck black film membranous layer ingredient at regular reinforcement, High Tensile Steel Wire or plain bar twisted wire outside surface and contains Fe
3O
4, FeS and CuS blackout reinforcing bar, blackout High Tensile Steel Wire or the blackout steel strand of oxidation preservative coat.
The manufacture method of above-mentioned anticorrosion prestressed bars is: use the normal temperature iron and steel surface sensitizing blackening agent for surface of being made up of sensitizing solution and room temperature blackening liquid that regular reinforcement, High Tensile Steel Wire or plain bar twisted wire are carried out the surface blackening art breading, it comprises following technological process:
A, pre-treatment: regular reinforcement, High Tensile Steel Wire or plain bar twisted wire are carried out surface degreasing, rust cleaning pre-treatment;
B, cleaning I: pretreated regular reinforcement, High Tensile Steel Wire or plain bar twisted wire are cleaned by rinse bath I;
C, sensitization: will be through pre-treatment and regular reinforcement, High Tensile Steel Wire or plain bar twisted wire after cleaning immerse in the sensitizing solution of the normal temperature iron and steel surface sensitizing blackening agent for surface of forming by sensitizing solution and room temperature blackening liquid immersion at normal temperatures and carry out sensitization in 3 minutes;
D, cleaning II: the reinforcing bar after the sensitization, High Tensile Steel Wire or steel strand water are cleaned;
E, melanism: the reinforcing bar after the sensitization that cleans up, High Tensile Steel Wire or steel strand were immersed in the hair blackening liquid of the normal temperature iron and steel surface sensitizing blackening agent for surface of forming by sensitizing solution and room temperature blackening liquid immersion 3 minutes;
F, cleaning III: the blackout reinforcing bar after the melanism, blackout High Tensile Steel Wire or blackout steel strand water are cleaned;
G, aftertreatment: the blackout reinforcing bar that will clean up, blackout High Tensile Steel Wire or blackout steel strand immersed in the encapsulant 1 minute, and described encapsulant is water-latex type polyurethane finishing agent or organosilicon crylic acid latex;
H, oven dry: with the blackout reinforcing bar behind the sealing treatment, blackout High Tensile Steel Wire or blackout steel strand heating, drying;
I, harvesting: with become to coil device will turn black High Tensile Steel Wire or the blackout steel strand be wound into dish, the reinforcing bar that will turn black is stacked in kiln.
The described normal temperature iron and steel surface sensitizing blackening agent for surface of being made up of sensitizing solution and room temperature blackening liquid comprises sensitizing solution and room temperature blackening liquid, and its prescription is as follows respectively:
1. sensitizing solution:
Mantoquita: 4～10g/l nickel salt: 1～5g/l
Citrate trianion: 4～10g/l tartrate: 4～10g/l
Thionamic acid: 4～10g/l H
2O: surplus
pH＝2～4
2. room temperature blackening liquid:
Sodium sulphite: 40～100g/l ethanol: 20～50ml/l
H
2O: surplus
pH＝8～10。
Common presstressed reinforcing steel passes through blackout reinforcing bar, blackout High Tensile Steel Wire or the blackout steel strand that the surface blackening art breading is crossed because the present invention's anticorrosion prestressed bars is regular reinforcement, High Tensile Steel Wire or plain bar twisted wire and so on, improved its antiseptic property greatly, the antiseptic property of product improves greatly than regular reinforcement, High Tensile Steel Wire, plain bar twisted wire and Stranded Galvanized Steel Wire; With regard to the blackout steel strand, under identical performance index situation, starting material and processing and manufacturing cost are lower than the spraying steel strand, and " product price ratio " than spraying steel strand height, and it is abundant, with short production cycle to have a starting material source, is beneficial to advantages such as quality control.
The normal temperature iron and steel surface sensitizing blackening agent for surface that is adopted is in addition made anticorrosion prestressed bars---and the production method of blackout reinforcing bar, blackout High Tensile Steel Wire or blackout steel strand has the following advantages:
1, membranous layer ingredient is stable, sticking power is good;
Copper sulfate is main membrane-forming agent in the sensitizing solution, and single nickel salt is a secondary film formers, in the time of the reaction of steel part and main membrane-forming agent, spontaneously supervenes auxilliary film formation reaction, thereby changes the The Nomenclature Composition and Structure of Complexes of film, improves performances such as the solidity to corrosion of black film and sticking power.The present invention except that with Trisodium Citrate as also adding tartrate and thionamic acid complexing agent and the stablizer as complexing agent and stablizer, further strengthened complexing action, stablized the performance of solution; Adjusted film formation reaction speed, made that film forming speed is faster, the better quality of film.
The present invention's blackening agent for surface is divided into sensitizing solution and hair blackening liquid, and its membrane formation mechanism is divided into following a few step:
(1) iron-based body and cupric ion generation replacement(metathesis)reaction:
(2) sulfuration sodium salt etc. generates atrament with Fe, Cu reaction, forms black film:
(3) Fe of reaction generation
2+Airborne O
2Reaction generates Fe
3+Change into Fe
3O
4:
By check and analysis, contain S, Fe, several elements of Cu, O in the membranous layer ingredient, the membranous layer ingredient of room temperature blackening is not simple Fe as can be seen from these elements
3O
4, also contain FeS, CuS etc., thereby rete is stable.
In addition, blackening was divided into for two steps, and sensitizing solution is acid, and blackening liquid is an alkalescence, after sensitization, carry out the first time and clean, remove the H+ of steel part remained on surface, then, put into the blackening liquid melanism of alkalescence again, make the salt of generation more stable, thereby the quality of film is also higher.
Carry out performance test: 1. carry out cupric sulphate dropping test, variable color, copper stain, rust spot in 40 seconds, do not occur, meet the regulation of dynamo-electric ministerial standard WJ535-82 fully; 2. with the test of 3% sodium chloride solution, the part that will turn black under 15～20 ℃ of conditions soaked 3 hours, contactless spot and rust spot.
2, do not contain selenate, phosphoric acid and phosphoric acid salt in the blackening agent for surface, nontoxic, the odorless of blackening agent for surface and ejecta has no irritating odor;
3, in postprocessing working procedures, adopt water-latex type polyurethane finishing agent or organosilicon crylic acid latex and so on encapsulant that the blackout reinforcing bar after turning black, blackout High Tensile Steel Wire or blackout steel strand are carried out aftertreatment; make it to form layer protecting film again, make its antiseptic property better at blackout reinforcing bar, blackout High Tensile Steel Wire or blackout steel strand surface.
Four, description of drawings:
Fig. 1: the process flow sheet of anticorrosion prestressed bars manufacture method of the present invention;
The anticorrosion prestressed bars of Fig. 2: embodiment one carries out blackening and handles used working groove synoptic diagram.
Among the figure: 1-draw drum 1,2-steel strand, 3-pretreatment tank, 4-rinse bath I, 5-sensitization groove, 6-rinse bath II, 7-melanism groove, 8-rinse bath III, 9-rear treating groove, 10-heating unit, 11-tractor, 12-one-tenth dish device.
Five, embodiment:
Embodiment one:
A kind of anticorrosion prestressed bars---blackout High Tensile Steel Wire or blackout steel strand.Be blackout High Tensile Steel Wire or the blackout steel strand that common High Tensile Steel Wire or plain bar twisted wire are made after by the surface blackening art breading, this blackout High Tensile Steel Wire or the steel strand outside surface that turns black are formed with one deck black film membranous layer ingredient and had both contained Fe
3O
4, also contain the oxidation preservative coat of FeS, CuS.
The method that the normal temperature iron and steel surface sensitizing blackening agent for surface that use is made up of sensitizing solution and room temperature blackening liquid carries out High Tensile Steel Wire or the processing of ordinary steel twisted wire blackening comprises following technological process (referring to Fig. 1, Fig. 2):
A, pretreatment process: common High Tensile Steel Wire or plain bar twisted wire 2 usefulness pretreatment tanks 3 from draw drum 1 uncoiling are carried out oil removing, rust cleaning pre-treatment;
B, cleaning I: common High Tensile Steel Wire or plain bar twisted wire are cleaned by rinse bath I4;
C, sensitization: will be through pre-treatment and the sensitizing solution of the normal temperature iron and steel surface sensitizing blackening agent for surface in sensitization groove 5, formed by sensitizing solution and room temperature blackening liquid of the common High Tensile Steel Wire after cleaning or plain bar twisted wire with the present invention soak and carried out sensitization in about 3 minutes;
D, clean II: clean by the High Tensile Steel Wire or the steel strand of rinse bath II6 after to sensitization;
E, melanism: the hair blackening liquid of the normal temperature iron and steel surface sensitizing blackening agent for surface that the High Tensile Steel Wire after the sensitization that cleans up or steel strand are made up of sensitizing solution and room temperature blackening liquid with the present invention in melanism groove 7 soaked about 3 minutes;
F, clean III: clean by the blackout High Tensile Steel Wire or the blackout steel strand of rinse bath III8 after to melanism;
G, aftertreatment: blackout High Tensile Steel Wire that will clean up or blackout steel strand immersed in the encapsulant about 1 minute;
H, oven dry: carry out heating, drying with blackout High Tensile Steel Wire after 10 pairs of sealings of high-frequency induction heating apparatus or blackout steel strand;
I, be wound into dish: be wound into dish with becoming to coil will turn black High Tensile Steel Wire or blackout steel strand of device 12.
In the whole process of production, High Tensile Steel Wire or steel strand keep constant speed by each treatment trough under the drive of tractor 11, in order to strengthen treatment effect, are provided with several ultrasonic generators in each treatment trough.
The normal temperature iron and steel surface sensitizing blackening agent for surface of being made up of sensitizing solution and room temperature blackening liquid that described surface blackening art breading is used comprises sensitizing solution and room temperature blackening liquid, and its prescription is as follows respectively:
1. sensitizing solution:
CuSO
4·5H
2O：4～10g/l NiSO
4·7H
2O：1～5g/l
Trisodium Citrate: 4～10g/l tartrate: 4～10g/l
Thionamic acid: 4～10g/l H
2O: surplus pH=2～4
2. room temperature blackening liquid:
Sodium sulphite: 40～100g/l ethanol: 20～50ml/l
H
2O: surplus pH=8～10
In the present embodiment, used encapsulant is water-latex type polyurethane finishing agent or organosilicon crylic acid latex.
As a kind of conversion of the embodiment of the invention, the CuSO in the described sensitizing solution
45H
2O can use other mantoquitas instead, described NiSO
47H
2O can use other nickel salt instead.
Embodiment two:
A kind of anticorrosion prestressed bars---blackout reinforcing bar.Be the blackout reinforcing bar that common reinforcing bar is made after by the surface blackening art breading, this blackout reinforcing bar outside surface is formed with one deck black film membranous layer ingredient and had both contained Fe
3O
4, also contain the oxidation preservative coat of FeS, CuS.The normal temperature iron and steel surface sensitizing blackening agent for surface of described surface blackening art treatment and employing is with embodiment one, institute's difference is: bar diameter is bigger, can not be wound into dish, can only singlely handle, only need used groove or the utensils of operation such as pre-treatment, cleaning I, sensitization, cleaning II, melanism, cleaning III, aftertreatment are amplified, baking operation then adopts in baking oven or barn and carries out, and the blackout reinforcing bar after the oven dry neatly is deposited in the kiln and gets final product.
Claims (6)
1, the anticorrosion prestressed bars used of a kind of prestressed concrete construction engineering, it is characterized in that: described anticorrosion prestressed bars is a kind of with after regular reinforcement, High Tensile Steel Wire or the plain bar twisted wire process surface blackening art breading, is formed with one deck black film membranous layer ingredient at regular reinforcement, High Tensile Steel Wire or plain bar twisted wire outside surface and contains Fe
3O
4, FeS and CuS blackout reinforcing bar, blackout High Tensile Steel Wire or the blackout steel strand of oxidation preservative coat.
2, anticorrosion prestressed bars as claimed in claim 1 is characterized in that: described anticorrosion prestressed bars is a kind of blackout steel strand, is to contain Fe with being formed with one deck black film membranous layer ingredient at the steel strand outside surface after the plain bar twisted wire process surface blackening art breading
3O
4, FeS and CuS the blackout steel strand of oxidation preservative coat.
3, anticorrosion prestressed bars as claimed in claim 1, it is characterized in that: described anticorrosion prestressed bars is a kind of blackout reinforcing bar or blackout High Tensile Steel Wire, be with regular reinforcement or High Tensile Steel Wire through the surface blackening art breading after, be formed with one deck black film membranous layer ingredient at reinforcing bar or High Tensile Steel Wire outside surface and contain Fe
3O
4, FeS and CuS the blackout reinforcing bar or the blackout High Tensile Steel Wire of oxidation preservative coat.
4, as the manufacture method of claim 1 or 2 or 3 described anticorrosion prestressed bars, it is characterized in that: use the normal temperature iron and steel surface sensitizing blackening agent for surface of being made up of sensitizing solution and room temperature blackening liquid that regular reinforcement, High Tensile Steel Wire or plain bar twisted wire are carried out the surface blackening art breading, it comprises following technological process:
A, pre-treatment: regular reinforcement, High Tensile Steel Wire or plain bar twisted wire are carried out surface degreasing, rust cleaning pre-treatment;
B, cleaning I: pretreated regular reinforcement, High Tensile Steel Wire or plain bar twisted wire are cleaned by rinse bath I;
C, sensitization: will be through pre-treatment and regular reinforcement, High Tensile Steel Wire or plain bar twisted wire after cleaning immerse in the sensitizing solution of the normal temperature iron and steel surface sensitizing blackening agent for surface of forming by sensitizing solution and room temperature blackening liquid immersion at normal temperatures and carry out sensitization in 3 minutes;
D, cleaning II: the reinforcing bar after the sensitization, High Tensile Steel Wire or steel strand water are cleaned;
E, melanism: the reinforcing bar after the sensitization that cleans up, High Tensile Steel Wire or steel strand were immersed in the hair blackening liquid of the normal temperature iron and steel surface sensitizing blackening agent for surface of forming by sensitizing solution and room temperature blackening liquid immersion 3 minutes;
F, cleaning III: the blackout reinforcing bar after the melanism, blackout High Tensile Steel Wire or blackout steel strand water are cleaned;
G, aftertreatment: the blackout reinforcing bar that will clean up, blackout High Tensile Steel Wire or blackout steel strand immersed in the encapsulant 1 minute, and described encapsulant is water-latex type polyurethane finishing agent or organosilicon crylic acid latex;
H, oven dry: with the blackout reinforcing bar behind the sealing treatment, blackout High Tensile Steel Wire or blackout steel strand heating, drying;
I, harvesting: with become to coil device will turn black High Tensile Steel Wire or the blackout steel strand be wound into dish, the reinforcing bar that will turn black is stacked in kiln.
5, the manufacture method of anticorrosion prestressed bars as claimed in claim 4 is characterized in that: the described normal temperature iron and steel surface sensitizing blackening agent for surface of forming by sensitizing solution and room temperature blackening liquid, comprise sensitizing solution and room temperature blackening liquid, and its prescription is as follows respectively:
1. sensitizing solution:
Mantoquita: 4～10g/l nickel salt: 1～5g/l
Citrate trianion: 4～10g/l tartrate: 4～10g/l
Thionamic acid: 4～10g/l H
2O: surplus
pH＝2～4
2. room temperature blackening liquid:
Sodium sulphite: 40～100g/l ethanol: 20～50ml/l
H
2O: surplus
pH＝8～10。
6, the manufacture method of anticorrosion prestressed bars as claimed in claim 5 is characterized in that: in the sensitizing solution of the described normal temperature iron and steel surface sensitizing blackening agent for surface of being made up of sensitizing solution and room temperature blackening liquid, described mantoquita is: CuSO
45H
2O, described nickel salt is: NiSO
47H
2O.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02128318 CN1247814C (en) | 2001-07-31 | 2002-07-29 | Anticorrosion prestressed bars and its manufacture |
| PCT/CN2003/000037 WO2003091480A1 (en) | 2002-04-26 | 2003-01-17 | Corrosion resistant prestressed steel bar and its preparing process |
| AU2003263415A AU2003263415A1 (en) | 2002-04-26 | 2003-01-17 | Corrosion resistant prestressed steel bar and its preparing process |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01124521 | 2001-07-31 | ||
| CN011245212 | 2001-07-31 | ||
| CN01124521.2 | 2001-07-31 | ||
| CN 02128318 CN1247814C (en) | 2001-07-31 | 2002-07-29 | Anticorrosion prestressed bars and its manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1407133A CN1407133A (en) | 2003-04-02 |
| CN1247814C true CN1247814C (en) | 2006-03-29 |
Family
ID=25740456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02128318 Expired - Fee Related CN1247814C (en) | 2001-07-31 | 2002-07-29 | Anticorrosion prestressed bars and its manufacture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1247814C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088949A (en) * | 2014-05-13 | 2015-11-25 | 柳州欧维姆机械股份有限公司 | Steel strand inhaul cable filled or coated with polyurea protective material and manufacturing method of steel strand inhaul cable |
| CN106269446A (en) * | 2016-10-07 | 2017-01-04 | 柳州欧维姆机械股份有限公司 | High anticorrosion major diameter high-strength screw-thread steel rod and preparation method thereof |
-
2002
- 2002-07-29 CN CN 02128318 patent/CN1247814C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1407133A (en) | 2003-04-02 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Sino Cross Bridge Technology Co Ltd Assignor: LIUZHOU OVM MACHINERY Co.,Ltd. Contract fulfillment period: 2008.12.8 to 2013.12.8 Contract record no.: 2008110000184 Denomination of invention: Anticorrosion prestressed bars and its manufacture Granted publication date: 20060329 License type: Exclusive license Record date: 20081210 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.12.8 TO 2013.12.8; CHANGE OF CONTRACT Name of requester: CHINA COMMUNICATIONS CONSTRUCTION COMPANY BRIDGE T Effective date: 20081210 |
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Granted publication date: 20060329 Termination date: 20210729 |