CN105200320A - Small-sized round-link chain steel - Google Patents
Small-sized round-link chain steel Download PDFInfo
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- CN105200320A CN105200320A CN201510702122.XA CN201510702122A CN105200320A CN 105200320 A CN105200320 A CN 105200320A CN 201510702122 A CN201510702122 A CN 201510702122A CN 105200320 A CN105200320 A CN 105200320A
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Abstract
The invention discloses small-sized round-link chain steel, chemical components of which comprise, by weight, 0.18-0.25% of C, 1.50-1.90% of Mn, 0.15-0.40% of Si, 0.01-0.05% of Ti, 0.01-0.05% of Al, P being less than or equal to 0.035%, S being less than or equal to 0.035% and the rest of Fe and unavoidable impurities. Through a Ti micro-alloying technology for production, mechanical property of wire rods is raised by refined crystalline strengthening and precipitation strengthening effects of Ti element, and grain growth during high-temperature welding is inhibited by the use of precipitated carbonitride and texture of a weld zone and a heat effect zone is improved. The produced round-link chain steel has uniform texture and stable performance and is easy to process. Generation of welding cracks during flash butt welding is avoided. Tensile strength of a round-link chain finished product is greater than 800 MPa, and the product has excellent comprehensive performance.
Description
Technical field
The invention belongs to field of metallurgy, be specifically related to a kind of small dimension ring chain steel.
Background technology
Ring chain steel is mainly used in the transports such as mine, harbour, coal, cement mill, lifting, transmission use, key component and the consumable accessory of equipment, require that its intensity is high, good toughness, and there is good weldability, antifatigue, the characteristic such as wear-resistant, therefore require that starting material had both had good inner quality and surface quality, there is again excellent comprehensive mechanical property.
In recent years, small dimension round-link chain produced by the domestic 20Mn2A wire rod that generally adopts, and is mainly used in the hoisting machineries such as chain, lifting bundling belt, assembling chain block suspender.Its flow process of producing round-link chain is: drawing → shearing blanking → clod wash Cheng Huan → flash welding → intermediate frequency coil heating quenching → high tempering → surface anticorrosion process.There are some problems when carrying out round-link chain production in current domestic 20Mn2A wire rod: there is bainite structure in wire rod, cause intensity higher, easily occur brittle failure during clod wash; There is coarse grains phenomenon in welding processes, form Wei Shi body tissue, process of cooling chain shoulder easily cracks; The modified rear low strength problem of large gauge product, modifier treatment rear chain toughness is poor; The round-link chain insufficient strength made, cannot meet the demand of certain customers.
Patent CN102653834A discloses a kind of annular chains steel, this steel constituent is: C:0.20 ~ 0.25%, Mn:1.05 ~ 1.60%, Si:0.42 ~ 0.55%, P≤0.04%, S:0.04%, Ceq≤0.52%, eliminate the generation of welding crack by reducing Mn content in steel, but the method can cause wire rod intensity lower; Patent CN103469078A discloses a kind of 70kg level round-link chain wire rod, this steel constituent is: C:0.15 ~ 0.23%, Mn:1.20 ~ 1.90%, Si:0.15 ~ 0.55%, P≤0.020%, S:0.015%, Cr:0.10 ~ 0.50%, usually improve intensity by adding Cr unit in 20Mn2A steel, but the method can cause commissure coarse grains, easily causing the final performance of round-link chain undesirable; Patent CN1827822A discloses a kind of C grade circle chain of mine steel, this steel constituent is: C:0.17 ~ 0.30%, Mn:1.0 ~ 2.0%, Si:0.1 ~ 0.8%, Mo:0.1 ~ 0.5%, V:0.02 ~ 0.15%, Cr:0.05%, P≤0.03%, S≤0.03%, it contains more Alloy Elements Mo, V, and thus cost is higher, is only applicable to C level round-link chain and produces.
Summary of the invention
For the problem easily cracked after ring chain steel insufficient strength in prior art and welding, the invention provides a kind of small dimension ring chain steel, its As rolled wire rod specification is Φ 8 ~ 14mm, yield strength > 420MPa, tensile strength > 620MPa, elongation after fracture > 22%, can not produce welding crack, round-link chain finished product tensile strength > 800MPa when producing round-link chain.
For achieving the above object, the present invention adopts following technical scheme:
A kind of small dimension ring chain steel, its chemical composition comprises by weight percentage: C:0.18 ~ 0.25%, Mn:1.50 ~ 1.90%, Si:0.15 ~ 0.40%, Ti:0.01 ~ 0.05%, Al:0.01 ~ 0.05%, P≤0.035%, S≤0.035%, the Fe of surplus and inevitable impurity.
Preferably, in described ring chain steel, Ti content is 0.015 ~ 0.035%, Al content is 0.02 ~ 0.04%.
Further, the As rolled wire rod specification that described small dimension ring chain steel is obtained is Φ 8 ~ 14mm, yield strength > 420MPa, tensile strength > 620MPa.
Further, the round-link chain finished product tensile strength > 800MPa that described As rolled wire rod is made.
Small dimension ring chain steel of the present invention adopts Ti micro-alloying technology to produce, in steel, compound adds a small amount of Al element, improve the mechanical property of wire rod mainly through refined crystalline strengthening and precipitation strength effect, ensured the hardening capacity of ring chain steel simultaneously by higher Mn content.Need through high temperature flash welding when producing round-link chain, higher Mn content is unfavorable to welding property, easily cause coarse grains, produce welding crack, and the Ti separated out in steel (C, N) grain growth when effectively can suppress high-temperature soldering, improve the tissue of weld metal zone and heat affected zone, avoid the generation of welding crack.
In the present invention, the function and mechanism of each element is as follows:
C is the principal element improving ring chain steel intensity.In steel, carbon content increases, and is conducive to the yield strength and the tensile strength that improve steel, but too high plasticity and the toughness that can reduce steel of carbon content, worsen the welding property of steel.For ensureing that ring chain steel has good over-all properties, carbon content control is 0.18 ~ 0.25%.
Mn plays solution strengthening effect in steel, can significantly improve the intensity of steel, improves the hardening capacity of steel simultaneously.Mn too high levels easily causes segregation, causes occurring bainite or martensitic stucture in steel, reduces the plasticity of steel.In addition, Mn content increases the welding property of steel can be caused to reduce.In ring chain steel, Mn content controls 1.50 ~ 1.90%.
Si is a kind of solid solution element, is solid-solution in ferrite in steel, can improve yield strength and the tensile strength of steel.Meanwhile, the interpolation of Si can improve the temper resistance of ring chain steel, makes round-link chain after modifier treatment, have good over-all properties.But the too high flash welding performance that can affect round-link chain of Si element, therefore Si content controls 0.15 ~ 0.40%.
Ti is micro alloying element important in ring chain steel of the present invention, can separate out Ti (C, N) in the operation of rolling, stops austenite and ferrite crystal grain to be grown up, has stronger precipitation strength and refined crystalline strengthening effect.Meanwhile, the Ti (C, N) of precipitation effectively can stop grain growth when flash welding, improves the tissue of commissure and heat affected zone, prevents welding crack from producing.
Al is a kind of deoxidant element, can reduce oxygen content in steel, and energy crystal grain thinning, improve intensity and the toughness of steel, but Al too high levels can increase inclusion content of steel, therefore in steel, Al content controls 0.01 ~ 0.05%.
P, S element is impurity element, and content should be low as far as possible, thus reduces its segregation at austenite grain boundary place, improves the toughness of ring chain steel.
Compared with prior art, beneficial effect of the present invention is at least:
(1) produced by Ti micro-alloying technology, wire rod homogeneous microstructure, stable mechanical property, round-link chain can be directly used in and produce, need not adopt and roll after annealing, greatly can reduce the production cost of round-link chain.
(2) designed by reasonable component, while guarantee ring chain steel hardening capacity, avoid the generation of the welding crack that high Mn content causes.
Embodiment
Below in conjunction with embodiment and comparative example, the present invention is elaborated.
Embodiment 1
Small dimension ring chain steel, its chemical composition is by weight percentage: C:0.22%, Mn:1.72%, Si:0.24%, Ti:0.03%, Al:0.02%, P:0.013%, S:0.012%, the Fe of surplus and inevitable impurity.The production technique of steel is: electric arc furnace smelting → LF refining → 140mm × 140mm continuous small-billet casting → high speed wire rolling → stelmor cooling → collection volume, As rolled wire rod specification is Φ 14mm, and its performance is in table 1.Round-link chain production technique is: be drawn to Φ 12mm → shearing blanking → clod wash Cheng Huan → flash welding → intermediate frequency coil heating quenching (1000 DEG C) → tempering (300 DEG C) → surface anticorrosion process.The performance of finished product round-link chain is in table 2.
Embodiment 2
Small dimension ring chain steel, its chemical composition is by weight percentage: C:0.23%, Mn:1.75%, Si:0.21%, Ti:0.04%, Al:0.03%, P:0.015%, S:0.013%, the Fe of surplus and inevitable impurity.The production technique of steel is: electric arc furnace smelting → LF refining → 140mm × 140mm continuous small-billet casting → high speed wire rolling → stelmor cooling → collection volume, As rolled wire rod specification is Φ 10mm, and its performance is in table 1.Round-link chain production technique is: be drawn to Φ 8mm → shearing blanking → clod wash Cheng Huan → flash welding → intermediate frequency coil heating quenching (1000 DEG C) → tempering (300 DEG C) → surface anticorrosion process.The performance of finished product round-link chain is in table 2.
Embodiment 3
Small dimension ring chain steel, its chemical composition is by weight percentage: C:0.23%, Mn:1.70%, Si:0.25%, Ti:0.02%, Al:0.03%, P:0.016%, S:0.015%, the Fe of surplus and inevitable impurity.The production technique of steel is: electric arc furnace smelting → LF refining → 140mm × 140mm continuous small-billet casting → high speed wire rolling → stelmor cooling → collection volume, As rolled wire rod specification is Φ 12mm, and its performance is in table 1.Round-link chain production technique is: be drawn to Φ 10mm → shearing blanking → clod wash Cheng Huan → flash welding → intermediate frequency coil heating quenching (1000 DEG C) → tempering (300 DEG C) → surface anticorrosion process.The performance of finished product round-link chain is in table 2.
Comparative example
Small dimension ring chain steel, its chemical composition is by weight percentage: C:0.23%, Mn:1.65%, Si:0.22%, P:0.012%, S:0.013%, the Fe of surplus and inevitable impurity.The production technique of steel is: electric arc furnace smelting → LF refining → 140mm × 140mm continuous small-billet casting → high speed wire rolling → stelmor cooling → collection volume, As rolled wire rod specification is Φ 14mm, and its performance is in table 1.Round-link chain production technique is: be drawn to Φ 12mm → shearing blanking → clod wash Cheng Huan → flash welding → intermediate frequency coil heating quenching (1000 DEG C) → tempering (300 DEG C) → surface anticorrosion process.The performance of finished product round-link chain is in table 2.
The performance of table 1 embodiment 1-3 and comparative example's As rolled wire rod
| R m/MPa | R 0.2/MPa | A/％ | Z/％ | Clod wash | |
| Embodiment 1 | 628 | 428 | 24.2 | 72.2 | Qualified |
| Embodiment 2 | 642 | 433 | 23.6 | 70.6 | Qualified |
| Embodiment 3 | 633 | 430 | 24.5 | 68.9 | Qualified |
| Comparative example | 605 | 416 | 22.5 | 65.5 | Qualified |
The performance of table 2 embodiment 1-3 and comparative example's finished product round-link chain
The above embodiment only have expressed the specific embodiment of the present invention, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.Those skilled in the art all drops in protection scope of the present invention any variation that the present invention does under the enlightenment that the present invention conceives.
Claims (4)
1. a small dimension ring chain steel, it is characterized in that, its chemical composition comprises by weight percentage: C:0.18 ~ 0.25%, Mn:1.50 ~ 1.90%, Si:0.15 ~ 0.40%, Ti:0.01 ~ 0.05%, Al:0.01 ~ 0.05%, P≤0.035%, S≤0.035%, the Fe of surplus and inevitable impurity.
2. small dimension ring chain steel according to claim 1, is characterized in that, in described ring chain steel, Ti content is 0.015 ~ 0.035%, Al content is 0.02 ~ 0.04%.
3. small dimension ring chain steel according to claim 1 and 2, it is characterized in that, the As rolled wire rod specification that described ring chain steel obtains is Φ 8 ~ 14mm, yield strength > 420MPa, tensile strength > 620MPa.
4. small dimension ring chain steel according to claim 3, is characterized in that, the round-link chain finished product tensile strength > 800MPa that described As rolled wire rod is made.
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| CN201510702122.XA CN105200320A (en) | 2015-10-26 | 2015-10-26 | Small-sized round-link chain steel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105886937A (en) * | 2016-05-31 | 2016-08-24 | 安阳钢铁股份有限公司 | Low-cost and ultrahigh-strength steel wire rod for round-link chain and manufacturing method of low-cost and ultrahigh-strength steel wire rod |
| CN106498116A (en) * | 2016-10-27 | 2017-03-15 | 首钢水城钢铁（集团）有限责任公司 | A kind of production technology of circle chain of mine steel |
| CN110284047A (en) * | 2019-08-02 | 2019-09-27 | 武汉钢铁集团鄂城钢铁有限责任公司 | Carbon steel hot rolled strip and its manufacturing method in a kind of no blue shortness |
| CN113546962A (en) * | 2021-06-21 | 2021-10-26 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Production method of corrosion-resistant wire rod for winding steel wire on bridge main cable |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2919642B2 (en) * | 1991-05-27 | 1999-07-12 | 川崎製鉄株式会社 | Manufacturing method of high carbon steel for tempering with excellent toughness and fatigue resistance |
| CN1818118A (en) * | 2006-03-07 | 2006-08-16 | 河北工业大学 | Steel for circular ring chains for mineral purpose |
| CN101259582A (en) * | 2008-04-28 | 2008-09-10 | 江阴市界达特异制管有限公司 | Preparation of seamless special-shaped steel pipe for low temperature resistance oil derrick electric transmission pole tower |
| CN101341263A (en) * | 2005-12-20 | 2009-01-07 | 鬼头股份有限公司 | Link chain excellent in low-temperature toughness and method for heat treatment thereof |
| CN101418421A (en) * | 2008-12-09 | 2009-04-29 | 山东墨龙石油机械股份有限公司 | High intensity oil casing tube for resisting sulfurated hydrogen corrosion and method for producing the same |
| CN102230134A (en) * | 2011-07-01 | 2011-11-02 | 南京钢铁股份有限公司 | Quaternary marine mooring chain steel with large specification and high performance and machining process thereof |
| CN102864377A (en) * | 2012-09-10 | 2013-01-09 | 山西太钢不锈钢股份有限公司 | Hot rolled strip steel and manufacturing method thereof |
| WO2015017119A1 (en) * | 2013-07-30 | 2015-02-05 | Caterpillar Inc. | Wear resistant high toughness steel |
| US20150259771A1 (en) * | 2013-11-15 | 2015-09-17 | Gregory Vartanov | High Strength Low Alloy Steel and Method of Manufacturing |
-
2015
- 2015-10-26 CN CN201510702122.XA patent/CN105200320A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2919642B2 (en) * | 1991-05-27 | 1999-07-12 | 川崎製鉄株式会社 | Manufacturing method of high carbon steel for tempering with excellent toughness and fatigue resistance |
| CN101341263A (en) * | 2005-12-20 | 2009-01-07 | 鬼头股份有限公司 | Link chain excellent in low-temperature toughness and method for heat treatment thereof |
| CN1818118A (en) * | 2006-03-07 | 2006-08-16 | 河北工业大学 | Steel for circular ring chains for mineral purpose |
| CN101259582A (en) * | 2008-04-28 | 2008-09-10 | 江阴市界达特异制管有限公司 | Preparation of seamless special-shaped steel pipe for low temperature resistance oil derrick electric transmission pole tower |
| CN101418421A (en) * | 2008-12-09 | 2009-04-29 | 山东墨龙石油机械股份有限公司 | High intensity oil casing tube for resisting sulfurated hydrogen corrosion and method for producing the same |
| CN102230134A (en) * | 2011-07-01 | 2011-11-02 | 南京钢铁股份有限公司 | Quaternary marine mooring chain steel with large specification and high performance and machining process thereof |
| CN102864377A (en) * | 2012-09-10 | 2013-01-09 | 山西太钢不锈钢股份有限公司 | Hot rolled strip steel and manufacturing method thereof |
| WO2015017119A1 (en) * | 2013-07-30 | 2015-02-05 | Caterpillar Inc. | Wear resistant high toughness steel |
| US20150259771A1 (en) * | 2013-11-15 | 2015-09-17 | Gregory Vartanov | High Strength Low Alloy Steel and Method of Manufacturing |
Non-Patent Citations (1)
| Title |
|---|
| 穆惠民等: "《中国水泥装备制造、安装、维护与修理》", 31 May 2010, 北京：中国建材工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105886937A (en) * | 2016-05-31 | 2016-08-24 | 安阳钢铁股份有限公司 | Low-cost and ultrahigh-strength steel wire rod for round-link chain and manufacturing method of low-cost and ultrahigh-strength steel wire rod |
| CN106498116A (en) * | 2016-10-27 | 2017-03-15 | 首钢水城钢铁（集团）有限责任公司 | A kind of production technology of circle chain of mine steel |
| CN110284047A (en) * | 2019-08-02 | 2019-09-27 | 武汉钢铁集团鄂城钢铁有限责任公司 | Carbon steel hot rolled strip and its manufacturing method in a kind of no blue shortness |
| CN113546962A (en) * | 2021-06-21 | 2021-10-26 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Production method of corrosion-resistant wire rod for winding steel wire on bridge main cable |
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