CN107695095A - The production method of environment-friendly type high-carbon wire rod iron scale - Google Patents

The production method of environment-friendly type high-carbon wire rod iron scale Download PDF

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Publication number
CN107695095A
CN107695095A CN201711110220.XA CN201711110220A CN107695095A CN 107695095 A CN107695095 A CN 107695095A CN 201711110220 A CN201711110220 A CN 201711110220A CN 107695095 A CN107695095 A CN 107695095A
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China
Prior art keywords
rolling
wire rod
iron scale
temperature
carbon wire
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Pending
Application number
CN201711110220.XA
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Chinese (zh)
Inventor
陈军
蒋凌枫
朱建成
肖冬
林丹
王旭冀
黄伟成
邢耀进
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hunan Valin Xiangtan Iron and Steel Co Ltd
Hunan Hualing Xiangtan Iron and Steel Co Ltd
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Hunan Hualing Xiangtan Iron and Steel Co Ltd
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Application filed by Hunan Hualing Xiangtan Iron and Steel Co Ltd filed Critical Hunan Hualing Xiangtan Iron and Steel Co Ltd
Priority to CN201711110220.XA priority Critical patent/CN107695095A/en
Publication of CN107695095A publication Critical patent/CN107695095A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • B21B37/76—Cooling control on the run-out table
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B2045/0212—Cooling devices, e.g. using gaseous coolants using gaseous coolants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/20—Temperature

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

The production method of environment-friendly type high-carbon wire rod iron scale, the chemical composition percentage by weight of steel is C=0.69 ~ 0.75%, Si=0.15 ~ 0.25%, Mn=0.45 ~ 0.55%, P≤0.012%, S≤0.010%,（P+S）≤ 0.020%, Cu≤0.05%, Al≤0.005%, Cr≤0.05%, Ni≤0.05%, remaining is Fe and inevitable impurity.Processing step includes：（1）Rolling：Controlled rolling, 990 ± 30 DEG C of start rolling temperature, 870 ± 20 DEG C of temperature before finish rolling, 980 ± 10 DEG C of laying temperature；（2）Control cooling：Directly Water cooling and blower fan are cold by force after rolling, 0.8 ~ 1.05m/s of roller table speed, 3.5 ~ 5.5 DEG C/S of cooldown rate, insulation cover standard-sized sheet, obtain original wire rod without the tissue being harmful to drawing.The inventive method obtains preferable high-carbon wire rod surface oxidation Rotating fields, efficiently controls the thickness and structure of iron scale.

Description

The production method of environment-friendly type high-carbon wire rod iron scale
Technical field
The invention belongs to metallurgical technology field, is related to a kind of production method of environment-friendly type high-carbon wire rod iron scale.
Background technology
Develop with progress and the technology of society, what steel industry discharged to spent acid, which punish dynamics, unprecedentedly increases, to steel The horsepower requirements of iron material following process further improve, and promoting cold rolling mill, automobile production enterprise, there is an urgent need to subtract pickling even Exempt from the hot rolling raw produce of pickling.
Hot rolling rod bundle surface iron scale is typically made up of the oxide of three layers of iron, and outermost layer is finer and close Fe2O3, it is in It is red；Intermediate layer is fine and close and the Fe of flawless3O4, in black；And innermost layer is loose porous, easy quilt close to the part of matrix The FeO of destruction, in pewter.The oxygen content of these oxides is to be gradually reduced from outside to inside, and outer layer is fine and close, and internal layer is loose It is porous.As can be seen here, Reasonable adjustment technological parameter to generate the iron scale of different structure, can reach and subtract in the hot rolling Pickling or the purpose for exempting from pickling.
The content of the invention
The present invention is intended to provide a kind of production method of environment-friendly type high-carbon wire rod iron scale, obtains preferable high-carbon wire rod Surface oxidation Rotating fields, efficiently control the thickness and structure of iron scale.
Technical scheme：
The production method of environment-friendly type high-carbon wire rod iron scale, the chemical composition percentage by weight of steel for C=0.69 ~ 0.75%, Si= 0.15 ~ 0.25%, Mn=0.45 ~ 0.55%, P≤0.012%, S≤0.010%,（P+S）≤ 0.020%, Cu≤0.05%, Al≤ 0.005%, Cr≤0.05%, Ni≤0.05%, remaining is Fe and inevitable impurity.Processing step includes：
（1）Rolling：Controlled rolling, 990 ± 30 DEG C of start rolling temperature, 870 ± 20 DEG C of temperature before finish rolling, 980 ± 10 DEG C of laying temperature；
（2）Control cooling：Directly Water cooling and blower fan are cold by force after rolling, 0.8 ~ 1.05m/s of roller table speed, 1 ~ No. 2 fan delivery For 11000 ~ 12000 m3/ h, 3 ~ No. 5 fan deliveries are 10000 ~ 11000 m3/ h, 6 ~ No. 9 fan deliveries are 7500 ~ 8000 m3/ h, remaining fan delivery are 0 m3/ h, insulation cover standard-sized sheet, 3.5 ~ 5.5 DEG C/s of cooldown rate is controlled, obtains original wire rod without right The harmful tissue of drawing.
The present invention takes tapping temperature, final rolling temperature and the laying temperature of controlled rolling process, adjusts air-cooled line Stay-warm case opens quantity, fan delivery, and the process meanses such as are opened in wire rod roller table speed, the pass of stay-warm case after spinning, obtains preferable The composition and thickness of high-carbon wire rod iron scale.The present invention can produce a diameter of 5.5mm of finished product high-carbon wire rod, have anti-life Rust, pinch spalling is clean and exempts from the high-carbon wire rod of pickling, can meet low cost, environment-friendly type well, exempt from the drawing of pickling high-carbon steel Man of Silk Mill uses.
Beneficial effect of the present invention：Create open rolling, finish rolling and laying temperature control, the fan delivery of the high-carbon wire rod operation of rolling Control and roller table speed the series rooling technology such as control, effectively improve and control the thickness and structure of iron scale； With the inventive method production finished product a diameter of 5.5mm high-carbon wire rod, have it is anti-get rusty, pinch spalling is clean and exempts from the height of pickling Carbon wire rod, low cost, environment-friendly type can be met well, exempt from the use of pickling high-carbon steel wire drawing producer；Show using general steel mill There are equipment and process conditions, neither increase investment and production cost, improve production efficiency, energy-saving consumption-reducing again.
Brief description of the drawings
Fig. 1 is the iron scale composition of example 1 and thickness.
Fig. 2 is the iron scale composition of example 2 and thickness.
Fig. 3 is the iron scale composition of example 3 and thickness.
Embodiment
The main contents such as preferred forms in the operation of rolling of the present invention are described further with reference to embodiment：
Embodiment 1：
The control method of environment-friendly type high-carbon wire rod iron scale, steel grade XLX72A, the chemical composition percentage by weight of steel for C= 0.7041%, Si=0.1929%, Mn=0.5077%, P=0.0067%, S=0.0101%,（P+S）=0.0168%, Cu=0.0249%, Al =0.0013%, Cr=0.0238%, Ni=0.0101%.Wire rod diameter 5.5mm, 1012 DEG C of start rolling temperature, 863 DEG C of temperature before finish rolling, 973 DEG C of laying temperature；Roller table speed 0.80m/s；Directly Water cooling and blower fan are cold by force after rolling, 3.5 ~ 5.5 DEG C/S of cooldown rate, Original disc is organized as ferrite, pearlite and sorbite.Fan delivery：No. 1 17572 m3/ h, No. 2 120666 m3/ h, No. 3 106743 m3/ h, No. 4 112931 m3/ h, No. 5 105196 m3/ h, No. 6 78897 m3/ h, No. 7 77350 m3/ h, No. 8 80444 m3/ h, No. 9 81991 m3/ h, No. 10 0 m3/h；Stay-warm case standard-sized sheet.Scale structure and thickness are as shown in Figure 1.
Embodiment 2：
The control method of environment-friendly type high-carbon wire rod iron scale, steel grade XLX72A, the chemical composition percentage by weight of steel for C= 0.7228%, Si=0.2048%, Mn=0.514%, P=0.0120%, S：0.0071%,（P+S）=0.0191%, Cu=0.0095%, Al= 0.0019%, Cr=0.0267%, Ni=0.0072%.Wire rod diameter 5.5mm, 1007 DEG C of start rolling temperature, 866 DEG C of temperature, tell before finish rolling 983 DEG C of temperature of silk；Roller table speed 0.80m/s；Directly Water cooling and blower fan are cold by force after rolling, 3.5 ~ 5.5 DEG C/S of cooldown rate, former Beginning disk is organized as ferrite, pearlite and sorbite.Fan delivery：No. 1 117572 m3/ h, No. 2 119119 m3/ h, No. 3 108290 m3/ h, No. 4 112931 m3/ h, No. 5 105196 m3/ h, No. 6 78897 m3/ h, No. 7 77350 m3/ h, No. 8 80444 m3/ h, No. 9 81991 m3/ h, No. 10 0 m3/h；Stay-warm case standard-sized sheet.Scale structure and thickness are as shown in Figure 2.
Embodiment 3：
The control method of environment-friendly type high-carbon wire rod iron scale, steel grade XLX72A, the chemical composition percentage by weight of steel for C= 0.7182%, Si=0.2144%, Mn=0.5192%, P=0.0067%, S=0.0107%,（P+S）=0.0174%, Cu=0.0088%, Al The % of=0.0019%, Cr=0.0255%, Ni=0.0055.Wire rod diameter 5.5mm, 1017 DEG C of start rolling temperature, 872 DEG C of temperature before finish rolling, 978 DEG C of laying temperature；Roller table speed 0.80m/s；Directly Water cooling and blower fan are cold by force after rolling, 3.5 ~ 5.5 DEG C/S of cooldown rate, Original disc is organized as ferrite, pearlite and sorbite.Fan delivery：No. 1 117572 m3/ h, No. 2 120666 m3/ h, No. 3 106743 m3/ h, No. 4 112931 m3/ h, No. 5 105196 m3/ h, No. 6 77350 m3/ h, No. 7 77350 m3/ h, No. 8 80444 m3/ h, No. 9 81991 m3/ h, No. 10 0 m3/h；Stay-warm case standard-sized sheet.Scale structure and thickness are as shown in Figure 3.
From Fig. 1, Fig. 2, Fig. 3 test result, high-carbon steel wire rod is produced using the method for the present invention, when wire rod diameter is During 5.5mm, iron scale thickness is 10.15~16.99um, and ectonexine thickness ratio is 3.23~6.97, wire rod surface oxidation iron Skin is thicker, does not fall off, and meets that the iron scale ectonexine thickness ratio that client proposes is more than 2, can meet low cost, ring well Guarantor's type, exempt from the use of pickling high-carbon steel wire drawing producer.

Claims (1)

1. the production method of environment-friendly type high-carbon wire rod iron scale, it is characterised in that：The chemical composition percentage by weight of steel be C= 0.69 ~ 0.75%, Si=0.15 ~ 0.25%, Mn=0.45 ~ 0.55%, P≤0.012%, S≤0.010%,（P+S）≤ 0.020%, Cu≤ 0.05%, Al≤0.005%, Cr≤0.05%, Ni≤0.05%, remaining is Fe and inevitable impurity；Processing step includes：
（1）Rolling：Controlled rolling, 990 ± 30 DEG C of start rolling temperature, 870 ± 20 DEG C of temperature before finish rolling, 980 ± 10 DEG C of laying temperature；
（2）Control cooling：Directly Water cooling and blower fan are cold by force after rolling, 0.8 ~ 1.05m/s of roller table speed, 1 ~ No. 2 fan delivery For 11000 ~ 12000 m3/ h, 3 ~ No. 5 fan deliveries are 10000 ~ 11000 m3/ h, 6 ~ No. 9 fan deliveries are 7500 ~ 8000 m3/ h, remaining fan delivery are 0 m3/ h, insulation cover standard-sized sheet, 3.5 ~ 5.5 DEG C/s of cooldown rate is controlled, obtains original wire rod without right The harmful tissue of drawing.
CN201711110220.XA 2017-11-12 2017-11-12 The production method of environment-friendly type high-carbon wire rod iron scale Pending CN107695095A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110340155A (en) * 2019-07-03 2019-10-18 首钢水城钢铁（集团）有限责任公司 A kind of control production method for exempting from pickling SWRH82B gren rod iron scale
CN112139262A (en) * 2020-08-05 2020-12-29 柳州钢铁股份有限公司 Control method for tissue performance of rolled high-speed wire rod
CN114134410A (en) * 2021-10-08 2022-03-04 江阴兴澄合金材料有限公司 Cord steel wire rod suitable for deep drawing and manufacturing method thereof

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CN1184718A (en) * 1996-12-10 1998-06-17 鞍山钢铁集团公司 Process for producing steel wire being used to produce tyre steel cord
JPH10330847A (en) * 1997-06-06 1998-12-15 Sumitomo Metal Ind Ltd Method for directly softening hot rolled wire rod
KR100368212B1 (en) * 1996-11-19 2003-04-10 주식회사 포스코 Method for manufacturing wire rod having superior properties of wire drawing and scale exfoliation
KR100711404B1 (en) * 2005-12-26 2007-04-30 주식회사 포스코 Method for manufacturing high carbon steel wire rod with excellent mechanical descalability
CN101235476A (en) * 2008-01-08 2008-08-06 江苏沙钢集团有限公司 Technique for controlling hot rolling rod bundle surface iron scale
CN101244435A (en) * 2008-03-21 2008-08-20 东南大学 Technique for producing high-carbon steel wire bar
CN106269934A (en) * 2016-09-21 2017-01-04 邢台钢铁有限责任公司 The flexible control method of cord steel iron scale quality
CN106391699A (en) * 2016-11-07 2017-02-15 南京钢铁股份有限公司 Control method for oxide scales of hot-rolled tire cord steel wire rod

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KR100368212B1 (en) * 1996-11-19 2003-04-10 주식회사 포스코 Method for manufacturing wire rod having superior properties of wire drawing and scale exfoliation
CN1184718A (en) * 1996-12-10 1998-06-17 鞍山钢铁集团公司 Process for producing steel wire being used to produce tyre steel cord
JPH10330847A (en) * 1997-06-06 1998-12-15 Sumitomo Metal Ind Ltd Method for directly softening hot rolled wire rod
KR100711404B1 (en) * 2005-12-26 2007-04-30 주식회사 포스코 Method for manufacturing high carbon steel wire rod with excellent mechanical descalability
CN101235476A (en) * 2008-01-08 2008-08-06 江苏沙钢集团有限公司 Technique for controlling hot rolling rod bundle surface iron scale
CN101244435A (en) * 2008-03-21 2008-08-20 东南大学 Technique for producing high-carbon steel wire bar
CN106269934A (en) * 2016-09-21 2017-01-04 邢台钢铁有限责任公司 The flexible control method of cord steel iron scale quality
CN106391699A (en) * 2016-11-07 2017-02-15 南京钢铁股份有限公司 Control method for oxide scales of hot-rolled tire cord steel wire rod

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110340155A (en) * 2019-07-03 2019-10-18 首钢水城钢铁（集团）有限责任公司 A kind of control production method for exempting from pickling SWRH82B gren rod iron scale
CN112139262A (en) * 2020-08-05 2020-12-29 柳州钢铁股份有限公司 Control method for tissue performance of rolled high-speed wire rod
CN112139262B (en) * 2020-08-05 2023-04-07 柳州钢铁股份有限公司 Control method for tissue performance of rolled high-speed wire rod
CN114134410A (en) * 2021-10-08 2022-03-04 江阴兴澄合金材料有限公司 Cord steel wire rod suitable for deep drawing and manufacturing method thereof

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