CN106475432A - A kind of high-carbon steel wire rod being suitable to fine steel wire drawing and iron scale control method - Google Patents
A kind of high-carbon steel wire rod being suitable to fine steel wire drawing and iron scale control method Download PDFInfo
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- CN106475432A CN106475432A CN201510548416.1A CN201510548416A CN106475432A CN 106475432 A CN106475432 A CN 106475432A CN 201510548416 A CN201510548416 A CN 201510548416A CN 106475432 A CN106475432 A CN 106475432A
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Abstract
The present invention provides a kind of high-carbon steel wire rod being suitable to fine steel wire drawing and iron scale control method, and wire rod composition is as follows by weight percentage：C 0.84%～0.93%, Mn 0.15%～0.35%, Si 0.10%～0.20%, P 0.005%-0.013%, S 0.0030%～0.010%, Cr 0.05%-0.10%.High-carbon steel wire rod iron scale control method, including converter smelting-LF stove refine-bloom continuous casting-tandem rolling-wire rod rolling, 1160 DEG C -1240 DEG C of steel billet soaking zone temperature control, in 35-50min during soaking, steel billet 2.5-4h total heat time heating time；Steel billet high-pressure water descaling pressure is not less than 15MPa；Wire rod operation of rolling rate of deformation 10s-1-100s-1, control 880-910 DEG C of wire rod laying temperature, after spinning, wire rod rate of cooling controls in 15-20 DEG C/s.Good spalling and tack are had using the wire rod iron scale that the present invention produces, meets mechanical descaling and prevent the performance requirement corroding.
Description
Technical field
The invention belongs to high-carbon steel wire rod field, more particularly, to a kind of it is suitable to fine steel wire drawing
High-carbon steel wire rod and iron scale control method..
Background technology
With social continuous progress, the requirement to living environment for the people improves constantly, and then right
The environmental protection problem of industrial processes proposes gradually strict requirements.In fine steel wire
Production process, wire rod, before deep processing drawing, typically will be processed through de-scaling.Wire rod de-scaling side
Method has mechanical descaling and two kinds of Pickling Descaling.Pickling Descaling method due to due to environmental pollution,
Its application is gradually restricted, and the range of mechanical descaling method is continuously increased.Meanwhile, use
Must have before mechanical descaling necessarily in the high-carbon steel wire rod iron scale that fine steel wire produces
Protective capability, prevent iron sheet collection volume, packaging and transportation peel off, lead to wire rod surface
Corrosion occurs, deteriorates wire rod surface quality.In order that the iron scale of wire rod is suitable to mechanical descaling,
And make wire rod scale on surface have suitable protective capability it is necessary to explore a kind of uniqueness
High-carbon steel wire rod iron scale control method.
《A kind of production method of 510L automotive frame black rust steel》(application number：
CN201110031827.5 a kind of life of 510L automotive frame black rust steel of disclosure of the invention) "
Product method, belongs to thin plate rolling technical field.Controlled with rolling mill practice by composition, obtain plate
Fe in volume superficial oxidation iron sheet structure3O4Ratio reaches more than 80%, iron scale thickness ＜
10um.Composition Control：C be 0.06-0.14wt%, Si be ＜ 0.2wt%, Mn be 1.2-1.6wt%,
P is ＜ 0.02wt%, S ＜ 0.010wt%, Nb are 0.02-0.06wt% for 0.01-0.05wt%, Alt,
Si content ＜ 0.2wt%, balance of Fe；Rolling mill practice controls：Slab heating temperature controls
1230～1270 DEG C, heat time heating time is 3～3.5 hours；Ensure thick de-scaling temperature 1173 DEG C with
On, descaling system Stress control in more than 18MPa, using double descaling process；RT2 temperature
Control between 1040-1080 DEG C, at 860-880 DEG C, laminar flow adopts front cold finishing temperature control
Refrigerating mode, oiler temperature control is at 540-580 DEG C.Only describe the ferrum oxide of hot rolled steel plate
Skin control method, to not being suitable to mechanical descaling and provide the wire rod ferrum oxide of suitably protecting ability
Skin control method is introduced.A kind of unique fine steel wire of progressive urgent need exploitation of society is high
Carbon Steel Wire Rod iron scale control method, to reach the win-win mesh of production and environmental conservation
's.
Content of the invention
It is an object of the invention to overcoming the problems referred to above and not enough and provide and a kind of be suitable to essence
The high-carbon steel wire rod of finer wire drawing and iron scale control method, make high-carbon steel wire rod ferrum oxide
Leatherware has good spalling, is suitable to mechanical descaling from composition, and makes wire rod ferrum oxide leatherware
Standby good tack, provides suitable protection for wire rod before mechanical descaling.
The object of the invention is realized in：
In order to develop the high-carbon steel wire rod iron scale control method being suitable to fine steel wire drawing, this
Invention has carried out Comprehensive Designing, by suitable control in terms of wire rod chemical composition and hot rolling technology
C, Si, Mn and Cr content, makes high-carbon steel wire rod iron scale have good spalling,
Mechanical descaling is suitable to from composition, and makes wire rod iron scale possess good tack, be disk
Bar provides suitable protection before mechanical descaling.
In wire rod hot rolling technology design aspect, using steel billet elevated heating processes, coordinate water under high pressure
De-scaling, removes steel billet once oxidation iron sheet as far as possible.Wire rod adopts high temperature spinning technique, promotes to tell
The growth of wire rod iron scale after silk, controls wire rod ferrum oxide thickness in proper range, is suitable to machine
Tool de-scaling.
A kind of high-carbon steel wire rod being suitable to fine steel wire drawing, the composition by weight hundred of this wire rod
Divide as follows than meter：C 0.84%～0.93%, Mn 0.15%～0.35%, Si 0.10%～0.20%,
P 0.005%-0.013%, S 0.0030%～0.010%, Cr 0.05%-0.10%.
In the present invention, composition design reason is as follows：
Carbon is the main intensified element in steel, and carbon content is higher, the tensile strength of wire rod and steel wire
Higher.But too high carbon content leads to wire rod in the wire broken rate of drawing process and layering
Phenomenon increases.Meanwhile, carbon is converted into CO, the CO air accumulation of generation in steel oxidation process
Become pore.Carbon content is higher, and the iron scale of wire rod is thicker.Blocked up iron scale is easy to make
Become iron sheet to come off too early in packaging, storage and transportation, make wire rod surface be easy to suffer sky
Gas cut loses, and deteriorates wire rod surface quality.Cross thin iron scale to be unfavorable for improving wire rod in machinery
The spalling of de-scaling process, it is easy to cause wire rod surface iron sheet to peel off thoroughly, deteriorates wire drawing
Journey steel wire surface quality, increases wire broken rate.Therefore, in order that the iron scale of high-carbon steel wire rod
It is suitable to mechanical descaling, and provides suitable safeguard function for wire rod, wire rod carbon content control is existed
0.84%～0.93%.
Manganese be also a kind of improve wire rod intensity element, manganese element process of setting segregation more
Seriously.Manganese element too high levels easily cause (FeMn)2SiO4The appearance of tephroite, reduces
High-carbon steel course of hot rolling de-scaling performance it is easy to cause the press-in of wire rod surface iron sheet and wire rod
The blocked up phenomenon of scale on surface.Therefore in steel, manganese content controls 0.15%～0.35%.
Silicon is the main deoxidant element of high-carbon steel wire rod smelting process.Silicone content is low will to lead to molten steel
Deoxidation is not enough；But, it is thick that too high silicone content leads to residual oxide in steel to be mingled with, to steel
Application performance unfavorable.Silicone content is too high to make easily to be formed Fe in steel2SiO4, make high-carbon steel
Iron scale is difficult to remove in course of hot rolling.Therefore, in steel silicone content control 0.10%～
0.20%.
Phosphorus sulfur is all objectionable impurities elements in steel, and its content can not be too high, otherwise will deteriorate it cold
Pull out performance, do not meet the cold-drawn processing request of fine steel wire.Suitable phosphorus element sulphur is contained in steel,
The de-scaling performance in course of hot rolling for the high-carbon steel can be improved, prevent wire rod from iron sheet press-in occurring and lack
Fall into, and reduce wire rod iron scale thickness.Therefore, in steel, phosphorus sulfur content is respectively
0.005%-0.013%, S 0.0030%～0.010%.
Chromium is a kind of element improving wire rod intensity, and this element also can improve the quenching degree of wire rod,
The tissue of refinement high-carbon steel wire rod, reduces sorbite sheet interlayer spacing, improves the drawing property of wire rod.
Too high chromium content also can make the intensity of wire rod and hardness increase excessively, leads to wire rod in drawing
The processing hardening of journey is serious, and mould consumption increases, and reduces wire rod drawing property.By in wire rod
The suitable Cr of middle addition, improves wire rod iron scale tack, prevents wire rod before mechanical descaling
Peel off too early, deteriorate wire rod surface quality.Therefore, in steel, chromium content controls in 0.05%-0.10%.
A kind of high-carbon steel wire rod iron scale control method being suitable to fine steel wire drawing, including turn
- LF stove refine-bloom continuous casting-tandem rolling-wire rod rolling smelted by stove,
(1) heating steel billet：Wire rolling plants heating steel billet controls temperature in higher range, after making heating
Iron scale is easily removed；But billet heating temperature can not be too high, the time can not be long, prevents
Only heating steel billet deformation, causes rolling difficult；Meanwhile, it is also prevented from wire rod scale on surface mistake
Thickness, deteriorates the tack of iron sheet.Therefore in the present invention, steel billet soaking zone temperature control is 1160
DEG C -1240 DEG C, in 35-50min, steel billet total heat time heating time is in 2.5-4h for soaking time；
(2) steel billet high-pressure water descaling：Its Main Function is that removal steel billet is formed in heating furnace
Secondary iron scale, prevents the wire rod operation of rolling from forming surface iron sheet press-in, prevents wire rod Surface Oxygen
Change iron sheet is blocked up, deteriorates the tack of iron scale.In the present invention, steel billet high-pressure water descaling pressure
Power is not less than 15MPa；
(3) wire rod rolling, cooling：Too high wire rod operation of rolling rate of deformation, makes wire rod aoxidize
Iron sheet is easily broken, and iron scale aoxidizes further, deteriorates its spalling.Too low wire rod rolls
Speed processed, the course of hot rolling time is longer so that wire rod is in, and wire rod iron scale is blocked up, deteriorates it
Tack.In patent therefore of the present invention, wire rod operation of rolling rate of deformation 10s-1-100s-1；Roll
Wire rod laying temperature is higher afterwards, makes wire rod have suitable thickness and chemical composition, improves oxidation
The spalling of iron sheet, makes iron scale be suitable to mechanical descaling；Wire rod laying temperature is unsuitable too low,
Iron scale will be led to excessively thin, be unsuitable for mechanical descaling.In patent of the present invention, control wire rod
At 880-910 DEG C, after spinning, wire rod rate of cooling controls between 15-20 DEG C/s laying temperature.
The beneficial effects of the present invention is：It is suitable to fine steel wire drawing using according to the present invention
The wire rod thickness that high-carbon steel wire rod iron scale control method produces is in 7-13um, iron scale
Middle FeO content is not less than 70%, Fe2O3Content is not higher than 12%, makes wire rod ferrum oxide leatherware
There are good spalling and tack, meet mechanical descaling and prevent the performance requirement corroding, make
Final steel wire drawing process wire broken rate meets user and requires.
Specific embodiment
Below by embodiment, the present invention is further illustrated.
The embodiment of the present invention according to the component proportion of technical scheme, carry out smelting, continuous casting, rolling,
Continuous annealing, smooth.The composition of embodiment of the present invention wire rod is shown in Table 1.Embodiment of the present invention disk
The main technologic parameters of bar are shown in Table 2.The combination property of embodiment of the present invention wire rod is shown in Table 3.
The composition of table 1 embodiment of the present invention wire rod
| Embodiment | C, % | Si, % | Mn, % | Cr, % | P, % | S, % |
| 1 | 0.84 | 0.10 | 0.16 | 0.05 | 0.0052 | 0.0034 |
| 2 | 0.90 | 0.15 | 0.29 | 0.07 | 0.011 | 0.0079 |
| 3 | 0.93 | 0.19 | 0.34 | 0.09 | 0.012 | 0.0092 |
The main technologic parameters of table 2 embodiment of the present invention wire rod
The combination property of table 3 embodiment of the present invention wire rod.
Claims (2)
1. a kind of high-carbon steel wire rod being suitable to fine steel wire drawing is it is characterised in that the one-tenth of this wire rod
Divide as follows by weight percentage：C 0.84%～0.93%, Mn 0.15%～0.35%, Si
0.10%～0.20%, P 0.005%-0.013%, S 0.0030%～0.010%, Cr
0.05%-0.10%.
2. the high-carbon steel wire rod iron scale control being suitable to fine steel wire drawing described in a kind of claim 1
Method processed, including converter smelting-LF stove refine-bloom continuous casting-tandem rolling-wire rod rolling, it is special
Levy and be：
(1) heating steel billet：Steel billet soaking zone temperature control at 1160 DEG C -1240 DEG C, during soaking
Between in 35-50min, steel billet total heat time heating time is in 2.5-4h；
(2) steel billet high-pressure water descaling：Steel billet high-pressure water descaling pressure is not less than 15MPa；
(3) wire rod rolling, cooling：Wire rod operation of rolling rate of deformation 10s-1-100s-1, control
At 880-910 DEG C, after spinning, wire rod rate of cooling controls in 15-20 DEG C/s wire rod laying temperature processed
Between.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108359891A (en) * | 2018-02-13 | 2018-08-03 | 鞍钢股份有限公司 | A kind of superhigh intensity fine steel wire wire rod and its production method |
| CN109201732A (en) * | 2017-07-03 | 2019-01-15 | 河钢股份有限公司邯郸分公司 | The production method of the simple pickling wire rod of washing machine sunpender |
| CN110230008A (en) * | 2019-06-26 | 2019-09-13 | 江苏省沙钢钢铁研究院有限公司 | The production method of ultra-fine extra-high strength wire, wire rod and wire rod |
| CN110238230A (en) * | 2019-04-28 | 2019-09-17 | 江苏省沙钢钢铁研究院有限公司 | A kind of production method of superhigh intensity diamond wire wire rod |
| CN111940506A (en) * | 2020-07-01 | 2020-11-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for eliminating surface defects of high-carbon steel billet casting blank |
| CN113414236A (en) * | 2021-06-24 | 2021-09-21 | 江苏永钢集团有限公司 | Control method for improving mechanical stripping rate of scale of 80-grade cord steel |
| CN114959504A (en) * | 2022-07-12 | 2022-08-30 | 鞍钢股份有限公司 | Acid-washing-free cord steel wire rod and production method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111940506A (en) * | 2020-07-01 | 2020-11-17 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for eliminating surface defects of high-carbon steel billet casting blank |
| CN113414236A (en) * | 2021-06-24 | 2021-09-21 | 江苏永钢集团有限公司 | Control method for improving mechanical stripping rate of scale of 80-grade cord steel |
| CN113414236B (en) * | 2021-06-24 | 2022-07-12 | 江苏永钢集团有限公司 | Control method for improving mechanical stripping rate of scale of 80-grade cord steel |
| CN114959504A (en) * | 2022-07-12 | 2022-08-30 | 鞍钢股份有限公司 | Acid-washing-free cord steel wire rod and production method thereof |
| CN114959504B (en) * | 2022-07-12 | 2023-10-20 | 鞍钢股份有限公司 | Acid-washing-free cord steel wire rod and production method thereof |
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