CN105695861B - 一种耐磨轧制复合钢板 - Google Patents
一种耐磨轧制复合钢板 Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 238000005096 rolling process Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 18
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 15
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 14
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 10
- 238000005098 hot rolling Methods 0.000 claims abstract description 9
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 229910000975 Carbon steel Inorganic materials 0.000 abstract description 17
- 239000010962 carbon steel Substances 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 4
- 238000005336 cracking Methods 0.000 abstract description 2
- 238000000465 moulding Methods 0.000 abstract description 2
- 239000011651 chromium Substances 0.000 description 14
- 239000010936 titanium Substances 0.000 description 9
- 229910001566 austenite Inorganic materials 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 210000001787 dendrite Anatomy 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- 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
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- 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
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- 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
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- 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
Abstract
本发明涉及耐磨板材,具体说是一种耐磨轧制复合钢板,其由基材和复材热轧而成,基材为普碳钢板,复材为高强度耐磨钢板;普碳钢板成分的质量百分比为,C:0.1—0.2%、Si:0.15—0.35%、Mn:0.5—1.4%、P:≤0.04%、S:≤0.04%,余量为Fe;高强度耐磨钢板成分的质量百分比为,C:0.20‑0.35%、W:1.0‑2.0%、Si:0.5‑1.5%、Mn:0.8‑1.5%、Cr:1.0‑2.0%、Ti:1.0‑2.0%、S:≤0.04%、P:≤0.04%,余量为Fe。由于普碳钢板整体性能优异,强度、塑形、焊接等性能较高,其成本较低;而高强度耐磨钢板具有高淬透性、高韧性,且具有优良的低温韧性、抗裂性能和焊接性能;因此本发明将普碳钢板和高强度耐磨钢板热轧复合,从而可获得成本较低,各方面性能优异的板材。
Description
技术领域
本发明涉及耐磨钢板,具体说是一种耐磨轧制复合钢板。
背景技术
金属基复合板材的出现和发展,大大地改善及拓展了传统单一金属材料的性能及使用范围。金属基复合板材比传统的单一金属材料有更高的比张度、比刚度和比强度等;其是以一种金属作为基材,以另一种不同物理、化学性能的材料作为复材,并利用复合技术将其进行结合的一种新型复合板材。这对于我国缺乏镍、铬资源的国家来说有着重大意义和社会效益。
随着冶金、化工等经济支柱性产业的迅速发展,如矿山机械、煤炭采运、石油化工、建材装饰、船舶工程等对耐磨材料复合板的需求倍增,如矿山机械用轨道、煤炭采用选煤机械、石油天然气输送管道及船体、结构件等。但现有的复合钢板由于存在工艺和选材的缺陷,导致耐磨性、耐蚀性、强度等不够理想。
发明内容
针对上述技术问题,本发明提供一种强度较高、耐磨性较好的耐磨轧制复合钢板。
本发明采用的技术方案为:一种耐磨轧制复合钢板,其由基材和复材热轧而成,其中:基材为普碳钢板,复材为高强度耐磨钢板;普碳钢板成分的质量百分比为,C:0.1—0.2%、Si:0.15—0.35%、Mn:0.5—1.4%、P:≤0.04%、S:≤0.04%,余量为Fe;高强度耐磨钢板成分的质量百分比为,C:0.20-0.35%、W:1.0-2.0%、Si:0.5-1.5%、Mn:0.8-1.5%、Cr:1.0-2.0%、Ti:1.0-2.0%、S:≤0.04%、P:≤0.04%,余量为Fe。
作为优选,所述普碳钢板的屈服强度为235MPa,抗拉强度为400 MPa。
作为优选,所述普碳钢板的伸长率为26%。
作为优选,所述普碳钢板的表面硬度为140HBW。
作为优选,所述高强度耐磨钢板的屈服强度为900MPa,抗拉强度为1100 MPa。
作为优选,所述高强度耐磨钢板的表面硬度为450HBW。
由于普碳钢板整体性能优异,强度、塑形、焊接等性能较高,其成本较低;而高强度耐磨钢板具有高淬透性、高韧性,且具有优良的低温韧性、抗裂性能和焊接性能;因此本发明将普碳钢板和高强度耐磨钢板热轧复合,从而可获得成本较低,各方面性能优异的板材。
具体实施方式
下面将详细说明本发明,在此本发明的示意性实施例以及说明用来解释本发明,但并不作为对本发明的限定。
一种耐磨轧制复合钢板,其由基材和复材热轧而成,其中:基材为普碳钢板,复材为高强度耐磨钢板;所述普碳钢板成分的质量百分比为,C:0.1—0.2%、Si:0.15—0.35%、Mn:0.5—1.4%、P:≤0.04%、S:≤0.04%,余量为Fe;所述普碳钢板的屈服强度为235MPa,抗拉强度为400 MPa,伸长率为26%,表面硬度为140HBW。
本发明的高强度耐磨钢板成分的质量百分比为,C:0.20-0.35%、W:1.0-2.0%、Si:0.5-1.5%、Mn:0.8-1.5%、Cr:1.0-2.0%、Ti:1.0-2.0%、S:≤0.04%、P:≤0.04%,余量为Fe;高强度耐磨钢板的屈服强度为900MPa,抗拉强度为1100 MPa;表面硬度为450HBW。
本发明中铬Cr可与C反应形成Cr6C、Cr7C3和Cr23C6等碳化物,但由于铬的碳化物显微硬度低,且其形貌由于呈长条形而导致其韧性较差,在基体组织凝固过程中优先形成;因此,本发明中Cr元素的加入量较少,少量的Cr还可以使其固溶于奥氏体中,主要起提高基体的淬硬性和淬透性作用。
钨W在制备铸钢的过程中,可缩小奥氏体区域,降低碳在奥氏体内的溶解度,使共晶点和共析点向含碳量低的方向移动。随着含钨量的增加,可降低临界冷却速度,使奥氏体更倾向于转变为马氏或贝氏体,从而增加基体硬度,使得钨系合金铸钢具有很高的耐磨性。
钛Ti是强碳化物形成元素,与钢液中的C元素反应形成大量细小、弥散分布的TiC质点,可以细化奥氏体枝晶,改善共晶碳化物的形态与分布。故在成分设计中,直接将Ti含量控制在1.0-2.0%,直接将合金加入钢液中,以便易于熔化,通过所采用的中频感应熔炼炉电磁场搅拌作用使其产生大量相对均匀的TiC质点。但是,钢液中Ti元素含量过少或过多都不利于达到实际效果,过少则不利于使基体产生足够多的结晶核心质点和共晶碳化物来细化碳化物,过多则使钢液的流动性和充型能力降低,不利于提高工件致密性,对耐磨性能有负面影响,所以在其成分设计中控制其上限为2.0%。
实施例1
耐磨轧制复合钢板中普碳钢板成分的质量百分比为,C:0.1%、Si:0.15%、Mn:1.4%、P:0.04%、S:0.04%,余量为Fe,屈服强度为235MPa,抗拉强度为400 MPa,伸长率为26%,表面硬度为140HBW;高强度耐磨钢板成分的质量百分比为,C:0.20%、W:1.0%、Si:1.5%、Mn:1.5%、Cr:1.0%、Ti:1.0%、S:0.04%、P:0.04%,余量为Fe;屈服强度为900MPa,抗拉强度为1100MPa;表面硬度为450HBW;将两者热轧后测试性能得到:耐磨轧制复合钢板屈服强度为435MPa,抗拉强度为627MPa,伸长率为17%。
实施例2
耐磨轧制复合钢板中普碳钢板成分的质量百分比为,C:0.15%、Si:0.25%、Mn:1%、P:0.03%、S:0.03%,余量为Fe,屈服强度为235MPa,抗拉强度为400 MPa,伸长率为26%,表面硬度为140HBW;高强度耐磨钢板成分的质量百分比为,C:0.28%、W:1.5%、Si:1%、Mn:1.1%、Cr:1.5%、Ti:1.5%、S:0.03%、P:0.03%,余量为Fe;屈服强度为900MPa,抗拉强度为1100 MPa;表面硬度为450HBW;将两者热轧后测试性能得到:耐磨轧制复合钢板屈服强度为528MPa,抗拉强度为676MPa,伸长率为20%。
实施例3
耐磨轧制复合钢板中普碳钢板成分的质量百分比为,C:0.2%、Si:0.35%、Mn:0.5%、P:0.02%、S:0.02%,余量为Fe,屈服强度为235MPa,抗拉强度为400 MPa,伸长率为26%,表面硬度为140HBW;高强度耐磨钢板成分的质量百分比为,C:0.35%、W:2.0%、Si:0.5%、Mn:0.8%、Cr:2.0%、Ti:2.0%、S:0.02%、P:0.03%,余量为Fe;屈服强度为900MPa,抗拉强度为1100 MPa;表面硬度为450HBW;将两者热轧后测试性能得到:耐磨轧制复合钢板屈服强度为513MPa,抗拉强度为612MPa,伸长率为19.3%。
以上对本发明实施例所提供的技术方案进行了详细介绍,本文中应用了具体个例对本发明实施例的原理以及实施方式进行了阐述,以上实施例的说明只适用于帮助理解本发明实施例的原理;同时,对于本领域的一般技术人员,依据本发明实施例,在具体实施方式以及应用范围上均会有改变之处,综上所述,本说明书内容不应理解为对本发明的限制。
Claims (1)
1.一种耐磨轧制复合钢板,其由基材和复材热轧而成,其中:耐磨轧制复合钢板中普碳钢板成分的质量百分比为,C:0.15%、Si:0.25%、Mn:1%、P:0.03%、S:0.03%,余量为Fe,屈服强度为235MPa,抗拉强度为400 MPa,伸长率为26%,表面硬度为140HBW;高强度耐磨钢板成分的质量百分比为,C:0.28%、W:1.5%、Si:1%、Mn:1.1%、Cr:1.5%、Ti:1.5%、S:0.03%、P:0.03%,余量为Fe;屈服强度为900MPa,抗拉强度为1100 MPa;表面硬度为450HBW。
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