CN107185969A - Medium carbon cold heading steel wire rod scale on surface component and method for controlling thickness - Google Patents
Medium carbon cold heading steel wire rod scale on surface component and method for controlling thickness Download PDFInfo
- Publication number
- CN107185969A CN107185969A CN201710393204.XA CN201710393204A CN107185969A CN 107185969 A CN107185969 A CN 107185969A CN 201710393204 A CN201710393204 A CN 201710393204A CN 107185969 A CN107185969 A CN 107185969A
- Authority
- CN
- China
- Prior art keywords
- control
- wire rod
- temperature
- range
- stay
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- 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
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
The invention discloses a kind of medium carbon cold heading steel wire rod scale on surface component and method for controlling thickness, including final rolling temperature control, laying temperature control, the control of Stelmor cooling line cooling rate；Mill inlet temperature is controlled in the range of 830~860 DEG C, and finishing stands temperature rise is controlled in the range of 30~60 DEG C；Laying temperature is controlled in the range of 830~850 DEG C；Adjust Stanermo wind-cooling linear stay-warm case and open quantity and blower fan open degree, control wire rod enters stay-warm case temperature in the range of 700~750 DEG C, goes out stay-warm case temperature in the range of 630~680 DEG C.The present invention can obtain Fe3O4Ratio is higher and gren rod of iron scale thinner thickness, to prevent generation red rust too early in transportation.
Description
Technical field
The present invention relates to a kind of smelting rolling technique of steel, specifically, it is related to a kind of medium carbon cold heading steel wire rod Surface Oxygen
Change iron sheet component and method for controlling thickness.
Background technology
The scale structure of hot-rolled steel has vital influence to the surface quality of steel, is to prevent corrosion of steel
Primary barrier.Iron scale is the oxide of the iron that steel surface is generated under high temperature, and its composition includes FeO, Fe2O3And Fe3O4,
FeO, Fe are followed successively by from steel matrix to surface3O4And Fe2O3.The color of iron scale is with each oxidation component in iron scale
Constitute and change：Work as Fe2O3When ratio is higher, red is shown as；When FeO is more, pewter is shown as；Fe3O4When occupying the majority,
In black.
Raising with user to hot rolling wire quality requirement, as main raw material(s) hot rolling wire application not
It is disconnected to expand, while propose higher requirement to wire surface quality and performance, the especially surface matter to hot rolling wire
Amount requires higher steel products, and such as fastener cold-forging steel, welding steel, prestress wire steel are to hot rolling wire table
The requirement of face quality is all harsher.
The content of the invention
Technical problem solved by the invention is to provide a kind of medium carbon cold heading steel wire rod scale on surface component and thickness
Control method, can obtain Fe3O4Ratio is higher and gren rod of iron scale thinner thickness, to prevent mistake in transportation
Early generation red rust.
Technical scheme is as follows：
A kind of medium carbon cold heading steel wire rod scale on surface component and method for controlling thickness, including final rolling temperature control, tell
Silk temperature control, the control of Stelmor cooling line cooling rate；Mill inlet temperature is controlled in the range of 830~860 DEG C, finish rolling
Cheng Wensheng is controlled in the range of 30~60 DEG C；Laying temperature is controlled in the range of 830~850 DEG C；Adjust Stanermo wind-cooling linear
Stay-warm case opens quantity and blower fan open degree, and control wire rod enters stay-warm case temperature in the range of 700~750 DEG C, goes out stay-warm case temperature
Degree is in the range of 630~680 DEG C.
Further：By opening the 1st~2 stay-warm case, it is 50% by the control of first blower fan open degree, realizes that wire rod enters
Stay-warm case temperature is in the range of 700~750 DEG C, residence time of the control wire rod in high-temperature oxydation section；Phase change zone is moved forward, for disk
Bar phase transformation terminates the transformation of rear oxidation iron sheet constituent structure and provides advantage, closes 3~20 stay-warm cases, closes 2~10
Frame blower fan, control roller table speed goes out stay-warm case temperature in the range of 630~680 DEG C in 0.1~0.5m/s, control wire rod.
Further：The effect of control stelmor cooling technique is the thickness for controlling iron scale, by medium carbon steel Surface Oxygen
Change the thickness control of iron sheet at 9~15 μm.
Further：Stelmor cooling line roller table speed is 0.1~0.5m/s, extends the oxidation of wire rod scale on surface
Time, so as to control gren rod iron scale constituent and thickness.
Compared with prior art, the technology of the present invention effect includes：
The thickness and composition of iron scale can be controlled using the present invention, Fe can be obtained3O4Ratio is higher and iron scale
The gren rod of thinner thickness, to prevent generation red rust too early in transportation.
Brief description of the drawings
Fig. 1 is X-ray diffraction component analysis figure before and after medium carbon cold heading steel SWRCH35K gren rods control in the present invention.
Embodiment
Technical solution of the present invention is elaborated below with reference to example embodiment.However, example embodiment can
Implement in a variety of forms, and be not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that
The design of example embodiment more comprehensively and completely, and is comprehensively conveyed to those skilled in the art by the present invention.
The present invention can obtain Fe by the component and thickness control of centering carbon the cold heading steel scale on surface3O4Than
Higher and iron scale thinner thickness the gren rod of example, to prevent generation red rust too early in transportation.
It is an object of the invention to provide a kind of medium carbon cold heading steel wire rod scale on surface component and method for controlling thickness,
Obtain Fe3O4The higher iron scale of content ratio, to prevent generation red rust too early in transportation.The present invention is deeply
Analyze medium carbon cold heading steel wire rod iron scale oxide to be formed on the basis of rule, to each technique of gren rod controlled rolling and controlled cooling process
Link proposes the technological parameter of quantified controlling, optimizes current wire rod operation area medium carbon steel the cold heading steel production technology.
Medium carbon cold heading steel wire rod scale on surface component and method for controlling thickness, specifically include following steps：Finish rolling temperature
Degree control, laying temperature control, Stelmor cooling line cooling rate are controlled, and the technical parameter specifically controlled is：Finishing mill entrance temperature
Degree control is in the range of 830~860 DEG C, and finishing stands temperature rise is controlled in the range of 30~60 DEG C；Laying temperature control 830~
In the range of 850 DEG C；Adjust Stanermo wind-cooling linear stay-warm case and open quantity and blower fan open degree, control wire rod enters stay-warm case temperature
In the range of 700~750 DEG C, go out stay-warm case temperature in the range of 630~680 DEG C.
The purpose of control final rolling temperature is control scale structure and gross thickness.Connected according to medium carbon cold heading steel air atmosphere
Continuous oxidation behavior curve, the Quick Oxidation for avoiding iron scale is interval, and relatively low final rolling temperature can make medium carbon steel wire rod Surface Oxygen
Change thickness of scale relatively thin, and FeO contents are relatively low in control iron scale constituent, Fe3O4Content is higher, in transportation
Iron scale is difficult for drop-off, and wire rod surface can be played a protective role, prevent wire rod surface produce red rust, reduction user into
This.The purpose of laying temperature control is control scale structure and gross thickness, the iron scale that relatively low laying temperature is generated
Thinner thickness, but easily there is red rust in wire rod surface, influences wire rod outward appearance.The iron oxide skin depth of higher laying temperature generation
Degree is thicker, and the FeO layers of wire rod internal layer are thicker, easily occurs easily coming off in the defects such as layering bubbling, transportation, to wire rod table
Face does not have protective effect.
By opening the 1st~2 stay-warm case, it is 50% by the control of first blower fan open degree, realizes that wire rod enters stay-warm case
Temperature is in the range of 700~750 DEG C, residence time of the control wire rod in high-temperature oxydation section.Phase change zone is moved forward, is wire rod phase transformation
Terminate the transformation of rear oxidation iron sheet constituent structure and advantage be provided, close 3~20 stay-warm cases, close 2~10 frame blower fans,
Control roller table speed in 0.1~0.5m/s, control wire rod goes out stay-warm case temperature in the range of 630~680 DEG C.
In the present invention, the chemical composition composition of medium carbon cold heading steel is C%：0.32~0.36, Si%：0.10~0.15,
Mn%：0.45~0.50, B%：0.002~0.0035, and including trace alloying elements such as a small amount of Cr, Ni, Cu.
In the present invention, control laying temperature is crucial with stelmor cooling technique, and control laying temperature is mainly adjustment
Optimize the constituent of iron scale, by adjusting 5# water volume in water tank after finish rolling, by laying temperature control in 830~850 DEG C of models
In enclosing, make Fe in iron scale3O4Content is higher.Control stelmor cooling technique is mainly the thickness of control iron scale, weight
Point is to control the temperature into stay-warm case in the range of 700~750 DEG C, while the slower roller table speed of control, most middle carbon at last
The thickness control of steel surface iron scale is at 9~15 μm.
Embodiment 1
The present invention is applied in Chang Cai factories of Baogang 150mm2 production φ 10mm SWRCH35K gren rods, is spun
Temperature is reduced to 830~850 DEG C by original 930~950 DEG C, reduces the oxidizing temperature of wire rod scale on surface, drop
Low Stelmor cooling line roller table speed is 0.1~0.5m/s, extends the oxidization time of wire rod scale on surface, so as to control
Gren rod iron scale constituent and thickness.Control process program as shown in table 1.
The cold process program of carbon SWRCH35K gren rod controls in table 1
| Process program | Laying temperature/DEG C | Blower fan open degree | Enter stay-warm case temperature/DEG C | Go out stay-warm case temperature/DEG C |
| Before technique | 930 | It is fully closed | 890 | 690 |
| After technique | 830 | 1 frame blower fan 50% | 730 | 650 |
As shown in figure 1, being X-ray diffraction component point before and after medium carbon cold heading steel SWRCH35K gren rods control in the present invention
Analysis figure.
Table 2 show thickness and constituent ratio before and after SWRCH35K control techniques, cold by laying temperature and control
The adjustment of technique, the iron scale thickness for finally giving SWRCH35K gren rods is 9 μm, Fe in iron scale3O4Content ratio
For 73%.
Carbon SWRCH35K hot rolling rod bundle surface iron scales thickness and constituent ratio in table 2
| Process program | Oxidated layer thickness/μm | Iron scale constituent ratio |
| Before technique | 34 | Fe3O441%, FeO 48%, Fe2O311% |
| After technique | 9 | Fe3O473%, FeO 22%, Fe2O319% |
Term used herein is explanation and exemplary and nonrestrictive term.Because the present invention can be with a variety of
Form specific implementation without departing from the spiritual or substantive of invention, it should therefore be appreciated that above-described embodiment be not limited to it is any foregoing
Details, and should widely being explained in the spirit and scope that appended claims are limited, thus fall into claim or its etc.
Whole changes and remodeling in the range of effect all should be appended claims and covered.
Claims (4)
1. a kind of medium carbon cold heading steel wire rod scale on surface component and method for controlling thickness, it is characterised in that：Including finish rolling temperature
Degree control, laying temperature control, the control of Stelmor cooling line cooling rate；Mill inlet temperature is controlled in 830~860 DEG C of scopes
Interior, finishing stands temperature rise is controlled in the range of 30~60 DEG C；Laying temperature is controlled in the range of 830~850 DEG C；Adjust steyr
The air-cooled line stay-warm case that rubs opens quantity and blower fan open degree, and control wire rod enters stay-warm case temperature in the range of 700~750 DEG C, gone out
Stay-warm case temperature is in the range of 630~680 DEG C.
2. medium carbon cold heading steel wire rod scale on surface component as claimed in claim 1 and method for controlling thickness, it is characterised in that：
By opening the 1st~2 stay-warm case, it is 50% by the control of first blower fan open degree, realizes that wire rod enters stay-warm case temperature 700
In the range of~750 DEG C, residence time of the control wire rod in high-temperature oxydation section；Phase change zone is moved forward, is that wire rod phase transformation terminates rear oxygen
Change the transformation of iron sheet constituent structure and advantage is provided, close 3~20 stay-warm cases, close 2~10 frame blower fans, control roller-way
Speed goes out stay-warm case temperature in the range of 630~680 DEG C in 0.1~0.5m/s, control wire rod.
3. medium carbon cold heading steel wire rod scale on surface component as claimed in claim 1 and method for controlling thickness, it is characterised in that：
The effect of control stelmor cooling technique is the thickness for controlling iron scale, by the thickness control of medium carbon steel scale on surface
At 9~15 μm.
4. medium carbon cold heading steel wire rod scale on surface component as claimed in claim 1 and method for controlling thickness, it is characterised in that：
Stelmor cooling line roller table speed is 0.1~0.5m/s, extends the oxidization time of wire rod scale on surface, so as to control
Gren rod iron scale constituent and thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710393204.XA CN107185969B (en) | 2017-05-27 | 2017-05-27 | Medium carbon cold heading steel wire rod scale on surface component and method for controlling thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710393204.XA CN107185969B (en) | 2017-05-27 | 2017-05-27 | Medium carbon cold heading steel wire rod scale on surface component and method for controlling thickness |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107185969A true CN107185969A (en) | 2017-09-22 |
| CN107185969B CN107185969B (en) | 2019-10-29 |
Family
ID=59875126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710393204.XA Active CN107185969B (en) | 2017-05-27 | 2017-05-27 | Medium carbon cold heading steel wire rod scale on surface component and method for controlling thickness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107185969B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112428A (en) * | 2018-09-30 | 2019-01-01 | 唐山市德龙钢铁有限公司 | A kind of production method of low thickness oxide skin steel wire for welding |
| CN111804881A (en) * | 2020-07-10 | 2020-10-23 | 南京钢铁股份有限公司 | Smelting method for reducing iron oxide scale on surface of casting blank |
| CN111872113A (en) * | 2020-06-09 | 2020-11-03 | 江苏省沙钢钢铁研究院有限公司 | Medium-high carbon steel hot-rolled wire rod and production method thereof |
| CN112845633A (en) * | 2021-02-01 | 2021-05-28 | 新疆八一钢铁股份有限公司 | Mechanical stripping method for iron scale on surface of steel for wire making |
| CN113680814A (en) * | 2021-08-24 | 2021-11-23 | 攀钢集团研究院有限公司 | Method for controlling iron scale on surface of medium-carbon low-alloy wire |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE446882B (en) * | 1980-05-22 | 1986-10-13 | Ssab Svenskt Stal Ab Division | Method for production of non-alloy and low-alloy steel with carbon levels not exceeding .30 weight percent and containing 0.05 to 0.20 weight percent silicon |
| JPH0860246A (en) * | 1994-08-23 | 1996-03-05 | Sumitomo Metal Ind Ltd | Production of magnetic shield material |
| CN102266868A (en) * | 2011-08-05 | 2011-12-07 | 河北钢铁股份有限公司邯郸分公司 | Production method for pickling steel with reduced acid |
| CN102560253A (en) * | 2012-03-13 | 2012-07-11 | 南京钢铁股份有限公司 | Manufacturing method of high-quality cold heading steel with uniform structure property |
| CN102601129A (en) * | 2012-03-01 | 2012-07-25 | 首钢总公司 | Controlling method for scales on surface of low-carbon cold heading steel hot-rolled wire rods |
| CN103805847A (en) * | 2014-03-07 | 2014-05-21 | 武钢集团昆明钢铁股份有限公司 | Optical round wire rod reinforcement bar for producing prestressed concrete steel rod and processing method |
-
2017
- 2017-05-27 CN CN201710393204.XA patent/CN107185969B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE446882B (en) * | 1980-05-22 | 1986-10-13 | Ssab Svenskt Stal Ab Division | Method for production of non-alloy and low-alloy steel with carbon levels not exceeding .30 weight percent and containing 0.05 to 0.20 weight percent silicon |
| JPH0860246A (en) * | 1994-08-23 | 1996-03-05 | Sumitomo Metal Ind Ltd | Production of magnetic shield material |
| CN102266868A (en) * | 2011-08-05 | 2011-12-07 | 河北钢铁股份有限公司邯郸分公司 | Production method for pickling steel with reduced acid |
| CN102601129A (en) * | 2012-03-01 | 2012-07-25 | 首钢总公司 | Controlling method for scales on surface of low-carbon cold heading steel hot-rolled wire rods |
| CN102560253A (en) * | 2012-03-13 | 2012-07-11 | 南京钢铁股份有限公司 | Manufacturing method of high-quality cold heading steel with uniform structure property |
| CN103805847A (en) * | 2014-03-07 | 2014-05-21 | 武钢集团昆明钢铁股份有限公司 | Optical round wire rod reinforcement bar for producing prestressed concrete steel rod and processing method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112428A (en) * | 2018-09-30 | 2019-01-01 | 唐山市德龙钢铁有限公司 | A kind of production method of low thickness oxide skin steel wire for welding |
| CN111872113A (en) * | 2020-06-09 | 2020-11-03 | 江苏省沙钢钢铁研究院有限公司 | Medium-high carbon steel hot-rolled wire rod and production method thereof |
| CN111804881A (en) * | 2020-07-10 | 2020-10-23 | 南京钢铁股份有限公司 | Smelting method for reducing iron oxide scale on surface of casting blank |
| CN111804881B (en) * | 2020-07-10 | 2022-04-19 | 南京钢铁股份有限公司 | Smelting method for reducing iron oxide scale on surface of casting blank |
| CN112845633A (en) * | 2021-02-01 | 2021-05-28 | 新疆八一钢铁股份有限公司 | Mechanical stripping method for iron scale on surface of steel for wire making |
| CN113680814A (en) * | 2021-08-24 | 2021-11-23 | 攀钢集团研究院有限公司 | Method for controlling iron scale on surface of medium-carbon low-alloy wire |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107185969B (en) | 2019-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107185969A (en) | Medium carbon cold heading steel wire rod scale on surface component and method for controlling thickness | |
| CN103710507B (en) | A kind of preparation method of low nickel duplex stainless steel hot-rolled sheet coil | |
| CN104046760B (en) | A kind of production method of electric steel plate | |
| CN104141039A (en) | Rolling technology for controlling decarbonization of 42CrMo steel bloom hot-rolled wire rod | |
| CN104275366A (en) | Method for controlling oxide iron scale on surface of low-carbon steel hot rolled wire rod | |
| CN103352171B (en) | A kind of milling method of high-alloy steel D2 | |
| CN106282766B (en) | The 500MPa pickling steel and its production method of low surface roughness | |
| CN105132804A (en) | Method for rolling vanadium-titanium welding steel hot-rolled wire rod | |
| CN114525389A (en) | Method for controlling surface quality of nickel-based steel plate | |
| CN102605251A (en) | Method for preparing hot-rolled double-phase steel by front super-quick cooling process | |
| CN103753116B (en) | The manufacture method of sendzimir mill working roll | |
| CN105256235B (en) | The minimizing technology of steel alloy for high-pressure tank and its scale on surface | |
| CN108004370A (en) | A kind of technique with surface control powder method production 6~18mm vehicle structure steel plates | |
| CN102286655A (en) | Device and method for isothermal normalizing utilizing forging waste heat | |
| CN110846578A (en) | High-strength weather-resistant hot-rolled 310B-shaped steel with low surface crack rate and preparation method thereof | |
| CN107321787B (en) | Low-alloy the cold heading steel atmospheric corrosion resistance surface iron scale control method | |
| CN104018063A (en) | Low alloy and high strength Q420C medium steel plate and production method thereof | |
| CN106513439B (en) | A kind of hot rolling high carbon steel sheet band manufacture method of one side decarburization stratum proportion less than 0.7% | |
| CN202246747U (en) | Excess heat isothermal normalizing furnace | |
| CN107695095A (en) | The production method of environment-friendly type high-carbon wire rod iron scale | |
| CN107868919A (en) | A kind of resistance to hydrochloric acid and sulfuric acid corrosion steel and preparation method thereof | |
| CN107138522A (en) | A kind of cold-forging steel containing Cr hot rolling wire production method of easy pickling after annealing | |
| CN103834867B (en) | A kind of high strength BA material black plate and manufacture method thereof | |
| CN110735084A (en) | pipeline steel X42M hot rolled steel strip and preparation method thereof | |
| CN112779402B (en) | GCr15 bearing steel round steel annealing material and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |