CN102925810A - Light-circle cold-drawn prestressed wire and production method thereof - Google Patents
Light-circle cold-drawn prestressed wire and production method thereof Download PDFInfo
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- CN102925810A CN102925810A CN2012104112628A CN201210411262A CN102925810A CN 102925810 A CN102925810 A CN 102925810A CN 2012104112628 A CN2012104112628 A CN 2012104112628A CN 201210411262 A CN201210411262 A CN 201210411262A CN 102925810 A CN102925810 A CN 102925810A
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Abstract
The invention provides a light-circle cold-drawn prestressed wire which comprises the following chemical components: 0.83% of C, 0.22% of Si, 0.81% of Mn, 0.26% of Cr, 0.23% of V, 0.11% of P and 0.009% of S. The production technique comprises the following steps: carrying out surface treatment on a coil rod, carrying out wire drawing treatment, carrying out tension treatment, carrying out basket-type taking-up treatment, and finally, packaging and warehousing the finished product. The cold-drawn wire provided by the invention has the advantages of large diameter, small corrosion rate and strong stress corrosion resistance; and the mechanical indexes satisfy the corresponding mechanical property requirements for Grade 1570 wires.
Description
Technical field
The invention belongs to the steel wire production process field, especially relate to a kind of production method of drawn wire.
Background technology
Pre-stress steel cylinder concrete tubing (PCCP) is the strong water delivery tubing of economy and durability erosion resistance that at present domestic and international diversion works is generally used.Along with the use of this tubing, to the major diameter future development, mainly be handled easily to cold drawn compressor wire, reduce the concrete usage quantity, strengthen the casting quality of concrete, increase economic efficiency.
Summary of the invention
The problem to be solved in the present invention provides a kind of major diameter light cold drawn compressor wire of circle and production method thereof.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the cold drawn compressor wire of a kind of light circle, and it is characterized in that: its Chemical Composition is as follows,
C 0.83% Si 0.22% Mn 0.81% Cr 0.26%
V 0.2%-0.25% P 0.11% S 0.009%。
The production method of the cold drawn compressor wire of light circle of the present invention: production technique is that wire rod at first passes through surface treatment, then processes through wire drawing, processes through overtension again, and last finished product packaging and warehousing is processed in the take-up of basket bar.
Further, the overall compression ratio that described wire drawing is processed is 62.13%, and drawing passes is five roads, and each road compression ratio is respectively 17.61%, 20.82%, 19.00%, 17.18%, 13.47%, and linear velocity is 75m/min.
Further, each road drawing mould temperature out that described wire drawing is processed is controlled at 70 ° of C-80 ° of C, and temperature of monitoring in per 15 minutes is guaranteed finished product steel wire not " age hardening ", and hydrogen embrittlement test is qualified, reduces stiffening temperature and rate of cooling.
Further, except each road drawing mould that wire drawing is processed, the temperature out of other per pass mould is controlled at and is not less than 50 ° of C.
Further, each road drawing mould temperature out of described wire drawing processing is 75 ° of C.
Advantage and positively effect that the present invention has are: owing to adopting technique scheme, the drawn wire diameter of producing is large, erosion rate is little, the stress corrosion resistant ability is strong, and every mechanical index all satisfies mechanical property requirement corresponding to 1570 rank steel wires.
Description of drawings
Fig. 1 is technological process of production schematic diagram of the present invention
Fig. 2 is the schematic flow sheet that wire drawing is processed
Embodiment
The present invention relates to the cold drawn compressor wire of a kind of light circle, its Chemical Composition is as follows,
C 0.83% Si 0.22% Mn 0.81% Cr 0.26%
V 0.2%-0.25% P 0.11% S 0.009%。
For guaranteeing that Ф 8.0 steel wire stress corrosion indexs satisfy the requirement of GB/T5223-2002, except normal interpolation Gr, Mn, add again 0.23% V, and common SWRS82B steel grade do not add V element when rolling SMRS82B wire rod.
Produce the technical process of the cold drawn compressor wire of Ф 8.0 light circle with production method of the present invention: as shown in Figure 1, production technique is that wire rod at first passes through surface treatment, then processes through wire drawing, processes through overtension again, last finished product packaging and warehousing is processed in the take-up of basket bar.The take-up of basket bar arranges coil of wire outside diameter 2.3m, internal diameter 1.7m.Production unit is selected Ф 1200mm reel, and hard-tooth surface speed reducer, necessary electromotor are 110 kilowatts dead-beat vertical wire drawing machine, and what the type of cooling adopted is that reel interbedded water cold-peace narrow slit type is air-cooled.
As shown in Figure 2, the overall compression ratio that described wire drawing is processed is 62.13%, and drawing passes is five roads, and each road compression ratio is respectively 17.61%, 20.82%, 19.00%, 17.18%, 13.47%, and linear velocity is 75m/min.
Each road drawing mould temperature out that described wire drawing is processed is controlled at 70 ° of C-80 ° of C, with temperature of hand-held infrared thermometer monitoring in per 15 minutes, guarantees finished product steel wire not " age hardening ", and hydrogen embrittlement test is qualified, reduces stiffening temperature and rate of cooling.Preferably, each road drawing mould temperature out of wire drawing processing is 75 ° of C.
Except each road drawing mould that wire drawing is processed, the temperature out of other per pass mould is controlled at and is not less than 50 ° of C.Preferably, the temperature out of guaranteeing the per pass mould is 50 ° of C, guarantees the finished product steel wire produce not " age hardening ", makes the stress corrosion index of finished product steel wire reach the requirement of GB/T5223-2002.
Use the cold drawn compressor wire of Ф 8.0 light circle that method of the present invention is made, reach 1570 ranks, every mechanical index all satisfies mechanical property requirement corresponding to 1570 rank steel wires.SWRS82B raw material wire rod performance perameter is as follows:
Total decarburized layer 0.05mm tensile strength 1230MPa
Reduction of area 44% elongation 11%
At present, the alloy-steel wire of using the interpolation V element that the inventive method produces is compared with other steel wires minimum erosion rate, and when the higher pitting potential of 400mV, erosion rate can be ignored.The V alloy Steel Wire Surface that cleans up does not almost have the spot corrosion sign.In stress etching experiment, fracture does not appear in the test of V alloy steel wire by 200h, and test period far surpasses common cold-drawn steel wire and do not occur the requirement of rupturing at 75h.Because the H atomic diffusion of separating out in the V alloy steel wire is difficult for reaching the limit content that causes crackle in sample, the insufficient pressure of hydrogen is to destroy the tissue of V alloy steel wire.
The every mechanical index of Ф 8.0 light circle finished product steel wire detects as shown in table 1:
Table 1 Ф 8.0 drawn wire mechanical properties
| Project | Schwellenwert | Maximum | Weighted mean |
| Tensile strength MPa | 1610 | 1660 | 1640 |
| Yield strength MPa | 1390 | 1460 | 1430 |
| Number of bends R=200mm/180 ° | 7 | 12 | 9 |
| The number of torsions of every 210mm torque | 8 | 13 | 10 |
| Elastic modulus E (GPa) | 210 | 215 | ≥205 |
Above one embodiment of the present of invention are had been described in detail, but described content only is preferred embodiment of the present invention, can not be considered to be used to limiting practical range of the present invention.All equalizations of doing according to the present patent application scope change and improve etc., all should still belong within the patent covering scope of the present invention.
Claims (6)
1. a light is justified cold drawn compressor wire, and it is characterized in that: its Chemical Composition is as follows,
C 0.83% Si 0.22% Mn 0.81% Cr 0.26%
V 0.2%-0.25% P 0.11% S 0.009%。
2. the production method of the cold drawn compressor wire of light according to claim 1 circle, it is characterized in that: production technique is that wire rod at first passes through surface treatment, then processes through wire drawing, processes through overtension again, last finished product packaging and warehousing is processed in the take-up of basket bar.
3. light according to claim 2 is justified the production method of cold drawn compressor wire, it is characterized in that: the overall compression ratio that described wire drawing is processed is 62.13%, drawing passes is five roads, each road compression ratio is respectively 17.61%, 20.82%, 19.00%, 17.18%, 13.47%, and linear velocity is 75m/min.
4. light according to claim 2 is justified the production method of cold drawn compressor wire, it is characterized in that: each road drawing mould temperature out that described wire drawing is processed is controlled at 70 ° of C-80 ° of C, temperature of monitoring in per 15 minutes, guarantee finished product steel wire not " age hardening ", hydrogen embrittlement test is qualified, reduces stiffening temperature and rate of cooling.
5. light according to claim 3 is justified the production method of cold drawn compressor wire, it is characterized in that: except each road drawing mould that wire drawing is processed, the temperature out of other per pass mould is controlled at and is not less than 50 ° of C.
6. light according to claim 3 is justified the production method of cold drawn compressor wire, it is characterized in that: each road drawing mould temperature out that described wire drawing is processed is 75 ° of C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012104112628A CN102925810A (en) | 2012-10-24 | 2012-10-24 | Light-circle cold-drawn prestressed wire and production method thereof |
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| CN2012104112628A CN102925810A (en) | 2012-10-24 | 2012-10-24 | Light-circle cold-drawn prestressed wire and production method thereof |
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| CN102925810A true CN102925810A (en) | 2013-02-13 |
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| CN2012104112628A Pending CN102925810A (en) | 2012-10-24 | 2012-10-24 | Light-circle cold-drawn prestressed wire and production method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551418A (en) * | 2013-11-07 | 2014-02-05 | 天津德嘉预应力钢绞线有限公司 | Production process of pre-stressed indented steel wire for railroad sleeper |
| CN109622644A (en) * | 2018-12-11 | 2019-04-16 | 天津冶金集团中兴盛达钢业有限公司 | A kind of compressor wire and its manufacturing method of small relaxation rate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3388418B2 (en) * | 1994-06-21 | 2003-03-24 | 新日本製鐵株式会社 | Method for producing high carbon steel wire or steel wire excellent in wire drawing workability |
| CN102181786A (en) * | 2011-04-25 | 2011-09-14 | 江苏省沙钢钢铁研究院有限公司 | Coil rod used for 1670MPa level bridge cable zinc-coated wire and preparation method of coil rod |
-
2012
- 2012-10-24 CN CN2012104112628A patent/CN102925810A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3388418B2 (en) * | 1994-06-21 | 2003-03-24 | 新日本製鐵株式会社 | Method for producing high carbon steel wire or steel wire excellent in wire drawing workability |
| CN102181786A (en) * | 2011-04-25 | 2011-09-14 | 江苏省沙钢钢铁研究院有限公司 | Coil rod used for 1670MPa level bridge cable zinc-coated wire and preparation method of coil rod |
Non-Patent Citations (3)
| Title |
|---|
| 孙小桥等: "金属拉拔成形的发展现状", 《金属铸锻焊技术》 * |
| 李寿柏: "拉丝工艺技术的发展及程序设计", 《金属制品》 * |
| 罗素梅: "钢丝拉拔生产技术浅析", 《新疆有色金属》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103551418A (en) * | 2013-11-07 | 2014-02-05 | 天津德嘉预应力钢绞线有限公司 | Production process of pre-stressed indented steel wire for railroad sleeper |
| CN109622644A (en) * | 2018-12-11 | 2019-04-16 | 天津冶金集团中兴盛达钢业有限公司 | A kind of compressor wire and its manufacturing method of small relaxation rate |
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Application publication date: 20130213 |