CN106475432A - High-carbon steel wire rod suitable for fine steel wire drawing and iron scale control method - Google Patents
High-carbon steel wire rod suitable for fine steel wire drawing and iron scale control method Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 39
- 239000010959 steel Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 28
- 229910000677 High-carbon steel Inorganic materials 0.000 title claims abstract description 23
- 238000005491 wire drawing Methods 0.000 title claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title description 21
- 229910052742 iron Inorganic materials 0.000 title description 9
- 238000005096 rolling process Methods 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 10
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 8
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000002791 soaking Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000009987 spinning Methods 0.000 claims description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract description 26
- 229910052710 silicon Inorganic materials 0.000 abstract description 10
- 238000005536 corrosion prevention Methods 0.000 abstract description 2
- 238000004299 exfoliation Methods 0.000 abstract description 2
- 239000011572 manganese Substances 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 7
- 239000011651 chromium Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 238000005098 hot rolling Methods 0.000 description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 3
- 230000002542 deteriorative effect Effects 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 229910004283 SiO 4 Inorganic materials 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 238000010622 cold drawing Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 description 1
- 229910015136 FeMn Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Abstract
本发明提供一种适于精细钢丝拉拔的高碳钢盘条及氧化铁皮控制方法，盘条成分按重量百分比计如下：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％。高碳钢盘条氧化铁皮控制方法，包括转炉冶炼-LF炉精炼-大方坯连铸-连轧-线材轧制，钢坯均热段温度控制1160℃-1240℃，均热时在35-50min，钢坯总加热时间2.5-4h；钢坯高压水除鳞压力不低于15MPa；盘条轧制过程变形速率10s-1-100s-1，控制盘条吐丝温度880-910℃，吐丝后盘条冷却速度控制在15-20℃/s。采用本发明生产的盘条氧化铁皮具有良好的剥落性和附着性，满足机械除鳞和防止侵蚀的性能要求。The invention provides a high-carbon steel wire rod suitable for fine steel wire drawing and a method for controlling scale. The composition of the wire rod 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 scale control method, including converter smelting-LF furnace refining-bloom continuous casting-continuous rolling-wire rolling, the temperature control of the soaking section of the billet is 1160°C-1240°C, and the soaking time is 35-50min, The total heating time of the billet is 2.5-4h ; the descaling pressure of the billet by high - pressure water is not less than 15MPa; The cooling rate is controlled at 15-20°C/s. The iron oxide scale of the wire rod produced by the invention has good exfoliation and adhesion, and meets the performance requirements of mechanical descaling and corrosion prevention.
Description
技术领域technical field
本发明属于高碳钢盘条领域，尤其涉及一种适于精细钢丝拉拔的高碳钢盘条及氧化铁皮控制方法.。The invention belongs to the field of high-carbon steel wire rods, and in particular relates to a high-carbon steel wire rod suitable for drawing fine steel wires and a method for controlling iron oxide scale.
背景技术Background technique
随着社会的不断进步，人们对生存环境的要求不断提高，进而对工业生产过程的环境保护问题提出了逐渐严格的要求。在精细钢丝的生产过程，盘条在深加工拉拔前，一般要经过除鳞处理。盘条除鳞方法有机械除鳞和酸洗除鳞两种。酸洗除鳞方法由于环境污染的原因，其应用逐渐受到限制，机械除鳞方法的使用范围不断增加。同时，用于精细钢丝生产的高碳钢盘条氧化铁皮在机械除鳞前还得具有一定的保护能力，防止铁皮在集卷、包装和运输过程剥落，导致盘条表面出现锈蚀，恶化盘条表面质量。为了使盘条的氧化铁皮适于机械除鳞，并且使盘条表面氧化铁皮具有适当的保护能力，必须探索一种独特的高碳钢盘条氧化铁皮控制方法。With the continuous progress of society, people's requirements for the living environment have been continuously improved, and then gradually strict requirements have been put forward for the environmental protection of the industrial production process. In the production process of fine steel wire, the wire rod generally needs to be descaled before deep processing and drawing. Wire rod descaling methods include mechanical descaling and pickling descaling. Due to environmental pollution, the application of pickling descaling method is gradually limited, and the application range of mechanical descaling method is increasing. At the same time, the high-carbon steel wire rod oxide scale used in the production of fine steel wire must have a certain protective ability before mechanical descaling to prevent the iron scale from peeling off during coil collection, packaging and transportation, resulting in corrosion on the surface of the wire rod and deterioration of the wire rod. Surface Quality. In order to make the scale of the wire rod suitable for mechanical descaling, and to make the scale on the surface of the wire rod have proper protection ability, a unique scale control method for high carbon steel wire rod must be explored.
《一种510L汽车大梁用黑皮钢的生产方法》(申请号：CN201110031827.5)”的发明公开了一种510L汽车大梁用黑皮钢的生产方法，属于薄板轧制技术领域。通过成分与轧制工艺控制，获得板卷表层氧化铁皮结构中Fe3O4比例达到80％以上，氧化铁皮厚度＜10um。成分控制：C为0.06-0.14wt％、Si为＜0.2wt％、Mn为1.2-1.6wt％、P为＜0.02wt％、S＜0.010wt％、Nb为0.01-0.05wt％、Alt为0.02-0.06wt％，Si含量＜0.2wt％，余量为Fe；轧制工艺控制：板坯加热温度控制在1230～1270℃，加热时间为3～3.5小时；保证粗除鳞温度在1173℃以上，除鳞系统压力控制在18MPa以上，采用双排除鳞工艺；RT2温度控制在1040-1080℃之间，终轧温度控制在860-880℃，层流采用前冷冷却模式，卷取温度控制在540-580℃。仅介绍了热轧钢板的氧化铁皮控制方法，并未对适于机械除鳞并提供适当保护能力的盘条氧化铁皮控制方法进行介绍。社会的进步急需开发一种独特的精细钢丝用高碳钢盘条氧化铁皮控制方法，以便达到产品生产和环境保护的共赢目的。The invention of "A Production Method of Black Skin Steel for 510L Automobile Frame" (Application No.: CN201110031827.5)" discloses a production method of 510L black steel for automobile frame, which belongs to the technical field of thin plate rolling. Through composition and The rolling process is controlled, and the proportion of Fe 3 O 4 in the oxide scale structure on the surface of the coil is more than 80%, and the thickness of the oxide scale is <10um. Composition control: C is 0.06-0.14wt%, Si is <0.2wt%, and Mn is 1.2 -1.6wt%, P<0.02wt%, S<0.010wt%, Nb 0.01-0.05wt%, Alt 0.02-0.06wt%, Si content<0.2wt%, balance Fe; rolling process control : The slab heating temperature is controlled at 1230-1270°C, and the heating time is 3-3.5 hours; the rough descaling temperature is guaranteed to be above 1173°C, the pressure of the descaling system is controlled above 18MPa, and the double descaling process is adopted; the RT2 temperature is controlled at 1040 Between -1080°C, the final rolling temperature is controlled at 860-880°C, the laminar flow adopts the front cooling mode, and the coiling temperature is controlled at 540-580°C. Only the scale control method of hot-rolled steel sheets is introduced, and no suitable This paper introduces the iron scale control method of wire rod that is mechanically descaled and provides proper protection. The progress of society urgently requires the development of a unique scale control method for high-carbon steel wire rods for fine steel wires in order to achieve a common balance between product production and environmental protection. win purpose.
发明内容Contents of the invention
本发明的目的在于克服上述问题和不足而提供一种一种适于精细钢丝拉拔的高碳钢盘条及氧化铁皮控制方法，使高碳钢盘条氧化铁皮具有良好的剥落性，从成分上适于机械除鳞，并使盘条氧化铁皮具备良好的附着性，为盘条在机械除鳞前提供适当的防护。The object of the present invention is to overcome above-mentioned problems and deficiency and provide a kind of high-carbon steel wire rod that is suitable for fine steel wire drawing and scale control method, make high-carbon steel wire rod scale have good exfoliation property, from composition It is suitable for mechanical descaling, and makes the scale of the wire rod have good adhesion, and provides proper protection for the wire rod before mechanical descaling.
本发明目的是这样实现的：The purpose of the invention is achieved in this way:
为了开发适于精细钢丝拉拔的高碳钢盘条氧化铁皮控制方法，本发明在盘条化学成分和热轧工艺方面进行了全面设计，通过适当控制C、Si、Mn和Cr含量，使高碳钢盘条氧化铁皮具有良好的剥落性，从成分上适于机械除鳞，并使盘条氧化铁皮具备良好的附着性，为盘条在机械除鳞前提供适当的防护。In order to develop a high-carbon steel wire rod oxide scale control method suitable for fine steel wire drawing, the present invention has carried out a comprehensive design in terms of the chemical composition of the wire rod and the hot rolling process. By properly controlling the content of C, Si, Mn and Cr, the high Carbon steel wire rod scale has good peeling properties, is suitable for mechanical descaling in terms of composition, and makes the scale of the wire rod have good adhesion, providing proper protection for the wire rod before mechanical descaling.
在盘条热轧工艺设计方面，采用钢坯高温加热工艺，配合高压水除鳞，尽量去除钢坯一次氧化铁皮。盘条采用高温吐丝工艺，促进吐丝后盘条氧化铁皮的增长，控制盘条氧化铁厚度在适当范围，适于机械除鳞。In terms of the design of the hot rolling process of the wire rod, the high-temperature heating process of the steel billet is adopted, and the high-pressure water descaling is used to remove the primary oxide scale of the steel billet as much as possible. The wire rod adopts a high-temperature spinning process to promote the growth of the iron oxide scale of the wire rod after spinning, and control the iron oxide thickness of the wire rod within an appropriate range, which is suitable for mechanical descaling.
一种适于精细钢丝拉拔的高碳钢盘条，该盘条的成分按重量百分比计如下：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％。A high-carbon steel wire rod suitable for fine steel wire drawing, the composition of the wire rod 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%.
本发明中成分设计理由如下：In the present invention, composition design reason is as follows:
碳是钢中的主要强化元素，碳含量越高，盘条和钢丝的抗拉强度越高。但是过高的碳含量导致盘条在拉拔过程的断丝率和出现分层的现象增加。同时，碳在钢氧化过程被转变为CO，生成的CO气体聚集成气孔。碳含量越高，盘条的氧化铁皮越厚。过厚的氧化铁皮易于造成铁皮在包装、存储以及运输过程过早脱落，使盘条表面易于遭到空气侵蚀，恶化盘条表面质量。过薄的氧化铁皮不利于提高盘条在机械除鳞过程的剥落性，易于造成盘条表面铁皮剥落不彻底，恶化拉丝过程钢丝表面质量，增加断丝率。因此，为了使高碳钢盘条的氧化铁皮适于机械除鳞，并为盘条提供适当的防护功能，将盘条碳含量控制在0.84％～0.93％。Carbon is the main strengthening element in steel, and the higher the carbon content, the higher the tensile strength of the wire rod and wire. However, excessive carbon content leads to an increase in the rate of broken wires and delamination of the wire rod during the drawing process. At the same time, carbon is converted into CO during the steel oxidation process, and the generated CO gas accumulates into pores. The higher the carbon content, the thicker the oxide scale of the wire rod. Excessive thickness of the iron oxide sheet is likely to cause the iron sheet to fall off prematurely in the process of packaging, storage and transportation, making the surface of the wire rod vulnerable to air erosion and deteriorating the surface quality of the wire rod. Too thin iron oxide scale is not conducive to improving the peeling performance of the wire rod during the mechanical descaling process, and it is easy to cause incomplete peeling of the iron sheet on the surface of the wire rod, deteriorating the surface quality of the steel wire during the wire drawing process, and increasing the wire breakage rate. Therefore, in order to make the scale of the high-carbon steel wire rod suitable for mechanical descaling and provide proper protection for the wire rod, the carbon content of the wire rod should be controlled at 0.84% to 0.93%.
锰也是一种提高盘条强度的元素，锰元素在凝固过程的偏析较为严重。锰元素含量过高易于造成(FeMn)2SiO4锰橄榄石的出现，降低高碳钢在热轧过程的除鳞性能，易于造成盘条表面铁皮压入以及盘条表面氧化铁皮过厚现象。因此钢中锰含量控制在0.15％～0.35％。Manganese is also an element that improves the strength of the wire rod, and the segregation of manganese during the solidification process is relatively serious. Excessive manganese content will easily lead to the appearance of (FeMn) 2 SiO 4 manganese olivine, reduce the descaling performance of high carbon steel in the hot rolling process, and easily cause the iron sheet on the surface of the wire rod to be pressed in and the oxide scale on the surface of the wire rod to be too thick. Therefore, the manganese content in the steel is controlled at 0.15% to 0.35%.
硅是高碳钢盘条冶炼过程的主要脱氧元素。硅含量低将导致钢液脱氧不足；但是，过高的硅含量导致钢中残余氧化物夹杂粗大，对钢的应用性能不利。硅含量过高使钢中容易形成Fe2SiO4，使高碳钢的氧化铁皮在热轧过程不易去除。因此，钢中硅含量控制在0.10％～0.20％。Silicon is the main deoxidizing element in the smelting process of high carbon steel wire rod. Low silicon content will lead to insufficient deoxidation of molten steel; however, too high silicon content will lead to coarse residual oxide inclusions in steel, which is not good for the application performance of steel. Excessive silicon content makes it easy to form Fe 2 SiO 4 in the steel, making it difficult to remove the iron oxide scale of high carbon steel during hot rolling. Therefore, the silicon content in steel is controlled at 0.10% to 0.20%.
磷硫都是钢中有害杂质元素，其含量不能过高，否则将恶化其冷拔性能，不符合精细钢丝的冷拔加工要求。钢中含有适当的磷硫元素，可以提高高碳钢在热轧过程的除鳞性能，防止盘条出现铁皮压入缺陷，并且降低盘条氧化铁皮厚度。因此，钢中磷硫含量分别为0.005％-0.013％，S 0.0030％～0.010％。Phosphorus and sulfur are harmful impurity elements in steel, and its content should not be too high, otherwise it will deteriorate its cold drawing performance, which does not meet the cold drawing processing requirements of fine steel wire. The steel contains appropriate phosphorus and sulfur elements, which can improve the descaling performance of high carbon steel in the hot rolling process, prevent iron sheet pressing defects in wire rods, and reduce the thickness of iron oxide scales in wire rods. Therefore, the content of phosphorus and sulfur in steel is 0.005%-0.013%, and S 0.0030%-0.010%.
铬是一种提高盘条强度的元素，该元素也能提高盘条的淬透性，细化高碳钢盘条的组织，减小索氏体片层间距，提高盘条的拉拔性能。过高的铬含量也会使盘条的强度和硬度增加过多，导致盘条在拉拔过程的加工硬化严重，并且模耗增加，降低盘条拉拔性能。通过在盘条中加入适当的Cr，提高盘条氧化铁皮附着性，防止盘条在机械除鳞前过早剥落，恶化盘条表面质量。因此，钢中铬含量控制在0.05％-0.10％。Chromium is an element that improves the strength of wire rods. This element can also improve the hardenability of wire rods, refine the structure of high-carbon steel wire rods, reduce the interlamellar spacing of sorbite, and improve the drawability of wire rods. Excessive chromium content will also increase the strength and hardness of the wire rod too much, resulting in severe work hardening of the wire rod during the drawing process, and the increase in die consumption will reduce the drawing performance of the wire rod. By adding appropriate Cr to the wire rod, the adhesion of the oxide scale of the wire rod can be improved, and the premature peeling of the wire rod before mechanical descaling can be prevented, which will deteriorate the surface quality of the wire rod. Therefore, the chromium content in steel is controlled at 0.05%-0.10%.
一种适于精细钢丝拉拔的高碳钢盘条氧化铁皮控制方法，包括转炉冶炼-LF炉精炼-大方坯连铸-连轧-线材轧制，A high-carbon steel wire rod scale control method suitable for fine steel wire drawing, including converter smelting-LF furnace refining-bloom continuous casting-continuous rolling-wire rolling,
(1)钢坯加热：线材厂钢坯加热控制温度在较高范围，使加热后的氧化铁皮易于去除；但是钢坯加热温度不能过高，时间不能过长，防止钢坯加热变形，造成轧制困难；同时，也防止盘条表面氧化铁皮过厚，恶化铁皮的附着性。因此本发明中，钢坯均热段温度控制在1160℃-1240℃，均热时间在35-50min，钢坯总加热时间在2.5-4h；(1) Steel billet heating: the steel billet heating control temperature in the wire rod factory is in a relatively high range, so that the heated iron oxide scale is easy to remove; but the steel billet heating temperature should not be too high, and the time should not be too long, so as to prevent the steel billet from being heated and deformed, resulting in difficulty in rolling; at the same time , It also prevents the iron oxide scale on the surface of the wire rod from being too thick and deteriorating the adhesion of the iron scale. Therefore, in the present invention, the temperature of the billet soaking section is controlled at 1160°C-1240°C, the soaking time is 35-50min, and the total heating time of the billet is 2.5-4h;
(2)钢坯高压水除鳞：其主要作用是去除钢坯在加热炉内形成的一次氧化铁皮，防止盘条轧制过程形成表面铁皮压入，防止盘条表面氧化铁皮过厚，恶化氧化铁皮的附着性。本发明中，钢坯高压水除鳞压力不低于15MPa；(2) Billet high-pressure water descaling: its main function is to remove the primary oxide scale formed on the billet in the heating furnace, prevent the surface iron scale from being pressed in during the rolling process of the wire rod, prevent the surface scale of the wire rod from being too thick, and deteriorate the scale of the oxide scale adhesion. In the present invention, the descaling pressure of steel billets by high-pressure water is not lower than 15MPa;
(3)盘条轧制、冷却：过高的盘条轧制过程变形速率，使盘条氧化铁皮易于破碎，氧化铁皮进一步氧化，恶化其剥落性。过低的盘条轧制速率，使盘条处于热轧过程时间较长，盘条氧化铁皮过厚，恶化其附着性。因此本发明专利中，盘条轧制过程变形速率10s-1-100s-1；轧后盘条吐丝温度较高，使盘条具有适当的厚度和化学成分，提高氧化铁皮的剥落性，使氧化铁皮适于机械除鳞；盘条吐丝温度不宜过低，将会导致氧化铁皮过薄，不适于机械除鳞。本发明专利中，控制盘条吐丝温度在880-910℃，吐丝后盘条冷却速度控制在15-20℃/s之间。(3) Wire rod rolling and cooling: Excessively high deformation rate in the wire rod rolling process makes the oxide scale of the wire rod easy to break, and the oxide scale is further oxidized, which deteriorates its peeling property. Too low wire rod rolling rate makes the wire rod stay in the hot rolling process for a long time, and the oxide scale of the wire rod is too thick, which deteriorates its adhesion. Therefore, in the patent of the present invention, the deformation rate of the wire rod rolling process is 10s - 1-100s -1 ; the spinning temperature of the wire rod after rolling is relatively high, so that the wire rod has an appropriate thickness and chemical composition, improves the peeling property of the oxide scale, and makes The iron oxide scale is suitable for mechanical descaling; the spinning temperature of the wire rod should not be too low, which will cause the iron oxide scale to be too thin, which is not suitable for mechanical descaling. In the patent of the present invention, the spinning temperature of the wire rod is controlled at 880-910°C, and the cooling rate of the wire rod after spinning is controlled between 15-20°C/s.
本发明的有益效果在于：采用本发明涉及的适于精细钢丝拉拔的高碳钢盘条氧化铁皮控制方法生产的盘条厚度在7-13um，氧化铁皮中FeO含量不低于70％，Fe2O3含量不高于12％，使盘条氧化铁皮具有良好的剥落性和附着性，满足机械除鳞和防止侵蚀的性能要求，使最终钢丝拉拔过程断丝率满足用户要求。The beneficial effect of the present invention is that: the thickness of the wire rod produced by the high-carbon steel wire rod oxide scale control method suitable for fine steel wire drawing according to the present invention is 7-13um, and the FeO content in the oxide scale is not less than 70%. The content of 2 O 3 is not higher than 12%, so that the oxide scale of the wire rod has good peeling and adhesion, meets the performance requirements of mechanical descaling and corrosion prevention, and makes the broken wire rate of the final steel wire drawing process meet the user's requirements.
具体实施方式detailed description
下面通过实施例对本发明作进一步的说明。Below by embodiment the present invention will be further described.
本发明实施例根据技术方案的组分配比，进行冶炼、连铸、轧制、连续退火、平整。本发明实施例盘条的成分见表1。本发明实施例盘条的主要工艺参数见表2。本发明实施例盘条的综合性能见表3。In the embodiment of the present invention, smelting, continuous casting, rolling, continuous annealing, and leveling are carried out according to the component ratio of the technical solution. The composition of the wire rod according to the embodiment of the present invention is shown in Table 1. The main process parameters of the wire rod in the embodiment of the present invention are shown in Table 2. The comprehensive performance of the wire rod of the embodiment of the present invention is shown in Table 3.
表1本发明实施例盘条的成分The composition of table 1 embodiment of the present invention wire rod
表2本发明实施例盘条的主要工艺参数The main technological parameters of table 2 embodiment of the present invention wire rod
表3本发明实施例盘条的综合性能。Table 3 Comprehensive performance of the wire rod of the embodiment of the present invention.
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| 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 |
| CN115283435A (en) * | 2022-07-12 | 2022-11-04 | 鞍钢股份有限公司 | High-carbon steel wire rod oxidationFe in iron sheet 2 O 3 Method for controlling content and adhesiveness thereof |
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