CN107245647B - 一种基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法 - Google Patents
一种基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法 Download PDFInfo
- Publication number
- CN107245647B CN107245647B CN201710402813.7A CN201710402813A CN107245647B CN 107245647 B CN107245647 B CN 107245647B CN 201710402813 A CN201710402813 A CN 201710402813A CN 107245647 B CN107245647 B CN 107245647B
- Authority
- CN
- China
- Prior art keywords
- silicon steel
- orientation silicon
- strip
- flourishing
- continuous casting
- 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.)
- Active
Links
- 229910000976 Electrical steel Inorganic materials 0.000 title claims abstract description 71
- 238000009749 continuous casting Methods 0.000 title claims abstract description 34
- 238000000137 annealing Methods 0.000 claims abstract description 65
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 238000001953 recrystallisation Methods 0.000 claims abstract description 31
- 238000005098 hot rolling Methods 0.000 claims abstract description 28
- 238000005266 casting Methods 0.000 claims abstract description 26
- 238000005097 cold rolling Methods 0.000 claims abstract description 20
- 238000003723 Smelting Methods 0.000 claims abstract description 11
- 239000004615 ingredient Substances 0.000 claims abstract description 10
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 210000001519 tissues Anatomy 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 26
- SHHIADHOJKLUIZ-UHFFFAOYSA-N azane;molecular hydrogen Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 N.[H][H] SHHIADHOJKLUIZ-UHFFFAOYSA-N 0.000 claims description 24
- 210000003491 Skin Anatomy 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000000126 substance Substances 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims 2
- 229910001562 pearlite Inorganic materials 0.000 claims 1
- 238000004321 preservation Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000005261 decarburization Methods 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 238000007711 solidification Methods 0.000 abstract description 4
- 230000001131 transforming Effects 0.000 abstract description 4
- 238000005554 pickling Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 238000000034 method Methods 0.000 description 12
- 239000010410 layer Substances 0.000 description 7
- 238000001035 drying Methods 0.000 description 5
- 230000001939 inductive effect Effects 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 229920001296 polysiloxane Polymers 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 230000002349 favourable Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 239000011162 core material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002068 genetic Effects 0.000 description 2
- 229910001338 liquidmetal Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0nMS4wJyBlbmNvZGluZz0naXNvLTg4NTktMSc/Pgo8c3ZnIHZlcnNpb249JzEuMScgYmFzZVByb2ZpbGU9J2Z1bGwnCiAgICAgICAgICAgICAgeG1sbnM9J2h0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnJwogICAgICAgICAgICAgICAgICAgICAgeG1sbnM6cmRraXQ9J2h0dHA6Ly93d3cucmRraXQub3JnL3htbCcKICAgICAgICAgICAgICAgICAgICAgIHhtbG5zOnhsaW5rPSdodHRwOi8vd3d3LnczLm9yZy8xOTk5L3hsaW5rJwogICAgICAgICAgICAgICAgICB4bWw6c3BhY2U9J3ByZXNlcnZlJwp3aWR0aD0nMzAwcHgnIGhlaWdodD0nMzAwcHgnIHZpZXdCb3g9JzAgMCAzMDAgMzAwJz4KPCEtLSBFTkQgT0YgSEVBREVSIC0tPgo8cmVjdCBzdHlsZT0nb3BhY2l0eToxLjA7ZmlsbDojRkZGRkZGO3N0cm9rZTpub25lJyB3aWR0aD0nMzAwLjAnIGhlaWdodD0nMzAwLjAnIHg9JzAuMCcgeT0nMC4wJz4gPC9yZWN0Pgo8cGF0aCBjbGFzcz0nYm9uZC0wIGF0b20tMCBhdG9tLTEnIGQ9J00gMTk0LjIsMTUwLjAgTCAxMDQuMywxNTAuMCcgc3R5bGU9J2ZpbGw6bm9uZTtmaWxsLXJ1bGU6ZXZlbm9kZDtzdHJva2U6IzQyODRGNDtzdHJva2Utd2lkdGg6Mi4wcHg7c3Ryb2tlLWxpbmVjYXA6YnV0dDtzdHJva2UtbGluZWpvaW46bWl0ZXI7c3Ryb2tlLW9wYWNpdHk6MScgLz4KPHBhdGggY2xhc3M9J2JvbmQtMCBhdG9tLTAgYXRvbS0xJyBkPSdNIDE5NC4yLDEwOS4xIEwgMTA0LjMsMTA5LjEnIHN0eWxlPSdmaWxsOm5vbmU7ZmlsbC1ydWxlOmV2ZW5vZGQ7c3Ryb2tlOiM0Mjg0RjQ7c3Ryb2tlLXdpZHRoOjIuMHB4O3N0cm9rZS1saW5lY2FwOmJ1dHQ7c3Ryb2tlLWxpbmVqb2luOm1pdGVyO3N0cm9rZS1vcGFjaXR5OjEnIC8+CjxwYXRoIGNsYXNzPSdib25kLTAgYXRvbS0wIGF0b20tMScgZD0nTSAxOTQuMiwxOTAuOSBMIDEwNC4zLDE5MC45JyBzdHlsZT0nZmlsbDpub25lO2ZpbGwtcnVsZTpldmVub2RkO3N0cm9rZTojNDI4NEY0O3N0cm9rZS13aWR0aDoyLjBweDtzdHJva2UtbGluZWNhcDpidXR0O3N0cm9rZS1saW5lam9pbjptaXRlcjtzdHJva2Utb3BhY2l0eToxJyAvPgo8dGV4dCB4PScyNDAuMycgeT0nMTcwLjAnIGNsYXNzPSdhdG9tLTAnIHN0eWxlPSdmb250LXNpemU6NDBweDtmb250LXN0eWxlOm5vcm1hbDtmb250LXdlaWdodDpub3JtYWw7ZmlsbC1vcGFjaXR5OjE7c3Ryb2tlOm5vbmU7Zm9udC1mYW1pbHk6c2Fucy1zZXJpZjt0ZXh0LWFuY2hvcjpzdGFydDtmaWxsOiM0Mjg0RjQnID5OPC90ZXh0Pgo8dGV4dCB4PSczNS43JyB5PScxNzAuMCcgY2xhc3M9J2F0b20tMScgc3R5bGU9J2ZvbnQtc2l6ZTo0MHB4O2ZvbnQtc3R5bGU6bm9ybWFsO2ZvbnQtd2VpZ2h0Om5vcm1hbDtmaWxsLW9wYWNpdHk6MTtzdHJva2U6bm9uZTtmb250LWZhbWlseTpzYW5zLXNlcmlmO3RleHQtYW5jaG9yOnN0YXJ0O2ZpbGw6IzQyODRGNCcgPk48L3RleHQ+Cjwvc3ZnPgo= data:image/svg+xml;base64,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 N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000005712 crystallization Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N hydrogen Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- 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
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a particular fabrication or treatment of ingot or slab
- C21D8/1211—Rapid solidification; Thin strip casting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1222—Hot rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1216—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the working step(s) being of interest
- C21D8/1233—Cold rolling
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1244—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties the heat treatment(s) being of interest
- C21D8/1272—Final recrystallisation annealing
-
- 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
Abstract
本发明属于冶金技术领域,特别涉及一种基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法。按以下步骤进行:(1)按设定成分冶炼钢水,其成分按重量百分比为:C 0.01~0.05%,Si 1.5~3.0%,Mn 0.2~0.3%,Al≤0.005%,V 0.01~0.04%,S 0.002~0.005%,余量为Fe及不可避免杂质;(2)薄带连铸过程后形成铸带;(3)在惰性气氛条件下进行热轧;(4)酸洗去除氧化皮,然后进行单阶段或者两阶段冷轧;(6)两阶段再结晶退火,涂覆绝缘涂层并烘干,获得高性能无取向硅钢。本发明提供基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法,在部分利用初始凝固组织中{100}织构的遗传作用基础上,通过后续脱碳相变提供驱动力,促使成品板中形成发达的{100}面织构,从而获得高性能无取向硅钢。
Description
一种基于薄带连铸制备发达{100}面织构无取向硅钢薄带的 方法
技术领域
[0001] 本发明属于冶金技术领域,特别涉及一种基于薄带连铸制备发达{100}面织构无 取向硅钢薄带的方法。
背景技术
[0002] 硅钢是工业中用量最大的软磁材料,工业用无取向硅钢是一种用量最大的电工钢 材料,被广泛用于各种电机。无取向硅钢片的性能不仅直接关系到电能的损耗,而且决定了 电机、变压器等产品的性能、体积、重量和成本,因此降低铁损和磁各向异性、提高磁感强度 成为了硅钢的研究重点。体心立方晶体的〈1〇〇>为易磁化方向,<111〉晶轴为难磁化方向。无 取向硅钢晶体结构是决定其磁性能的重要因素,理想的晶体结构为{001} <uvw>,因为它是 各向同性而且难磁化方向〈111>不在乳面上。因此通过各种途径改善内部组织结构,在其乳 面内的所有方向都是易磁化方向,是降低铁损、提高磁感强度的关键控制技术。
[0003] 目前常规流程制备一方面存在设备投资大、工艺复杂、能耗大等问题,另一方面最 终成品板中存在较强的{111}织构,因此产品磁性能较差,并不能满足高效铁芯材料的使用 要求。而薄带连铸制备无取向硅钢在组织和织构方面具有独特的优势,其相关技术已经引 起冶金及材料领域技术人员的广泛关注。双辊薄带连铸技术是以液态金属为原料,以旋转 的冷却辊为结晶器,用液态金属直接获得可进行冷轧的薄带材,能够获得具有发达柱状晶 凝固组织和{100}织构的无取向硅钢铸带。双辊薄带连铸工艺从根本上改变了传统的薄带 生产方法,可不需经过连铸、再热和热轧等生产工序,极大地简化了工序,缩短生产流程。
[0004] 近年来,己有相关的技术报道提出利用薄带连铸技术制备无取向硅钢。中国专利 (公告号CN 102041367B)公开了一种薄带连铸制备无取向硅钢的制备方法,该专利通过控 制过热度提高铸带中等轴晶比例(大于50%),控制铸后冷速并进行单阶段或者两阶段冷 轧。该方法并未充分利用初始{1〇〇丨面织构强度,最终产品磁感值仅为1 • 7〇〜1.79T。美国专 利US5482107公开了一种利用薄带连铸方法生产电工钢的方法,该发明主要通过降低乳制 压下量从而保留铸态组织中的有利织构,但是最终成品厚度受到限制,无法生产薄规格高 牌号无取向硅钢。如何充分利用薄带连铸的优势,达到提高成品钢板中丨100丨织构强度目 的,是制备高牌号无取向硅钢的技术关键,有待进一步研宄。
发明内容
[0005] 针对现有高磁感低铁损无取向硅钢在制备方法上存在的上述问题,本发明提供一 种基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法,在部分利用初始凝固组织 中{100}织构的遗传作用基础上,通过后续脱碳相变提供驱动力,促使成品板中形成发达的 {100}面织构,从而获得高磁感低铁损无取向硅钢。
[0006] 本发明的技术方案是:
[0007] 一种基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法,按以下步骤进 行:
[0008] (1)按设定成分冶炼钢水,其成分按重量百分比为:C 0.01〜0.04%,Si 1.5〜 2.5%,Mn 0.2〜0.3%,A1 彡0.005%,S 0.002〜0.005%,余量为Fe及不可避免杂质;
[0009] (2)薄带连铸过程:将钢水通过浇口进入中间包,中间包预热温度1200〜1250°C, 控制过热度为30〜60°C,钢水通过中间包进入薄带连铸机后形成铸带,控制铸速40〜60m/ min,控制熔池液位高度100〜150mm,控制铸带厚度1.5〜2. Oram;
[0010] ⑶铸带出辊后在惰性气氛条件下自然冷却至热轧机,热轧温度950〜1000°C,终 乳温度900〜950°C,压下量10〜20%,热轧后卷取;
[0011] ⑷将热卷清理掉氧化皮后进行单阶段多道次冷乳,总压下量为60〜80 %,获得冷 乳带卷;
[0012] (5)将冷乳带通过连续退火进行热处理,在840〜880°C进行再结晶退火,时间为 200〜240s;继续加热在950〜1000°C进行第二阶段再结晶退火,时间为120〜180s;第一阶 段再结晶退火在氮气氢气混合气氛条件下进行,控制混合气氛的露点在+30°C脱碳;第二阶 段再结晶退火在氮气氢气混合气氛条件下进行,控制混合气氛的露点在-30°C以下,然后涂 覆绝缘层并烘干,获得高性能无取向硅钢成品。
[0013] 一种基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法,按以下步骤进 行:
[0014] (1)按设定成分冶炼钢水,其成分按重量百分比为:C 0.02〜0.05%,Si 2.0〜 3.0%,Mn 0.2〜0.3%,A1 彡0.005%,S 0.002〜0.005%,余量为?6及不可避免杂质;
[0015] (2)薄带连铸过程:将钢水通过浇口进入中间包,中间包预热温度1200〜125(TC, 控制过热度为30〜60 °C,钢水通过中间包进入薄带连铸机后形成铸带,控制铸速40〜60m/ min,控制熔池液位高度100〜150mm,控制铸带厚度2.0〜2.5mm;
[0016] (3)铸带出辊后在惰性气氛条件下自然冷至热轧机,热轧温度950〜1000°C,终轧 温度900〜950°C,压下量10〜20%,热轧后卷取;
[0017] ⑷将热卷清理掉氧化皮后进行两阶段多道次冷轧,第一阶段压下量为50〜60%, 在850〜900°C保温120〜180s进行中间退火,控制混合气氛的露点在+30°C脱碳,促进表面 形成发达的{100}组织,第二段总压下量为60〜80%,获得冷轧带卷;
[0018] (5)将冷轧带通过连续退火进行热处理,在850〜900°C进行再结晶退火,时间为 120〜200s;继续加热在950〜100(TC进行第二阶段再结晶退火,时间为120〜180s;第一阶 段再结晶退火在氮气氢气混合气氛条件下进行,控制混合气氛的露点在+3(TC脱碳;第二阶 段再结晶退火在氮气氢气混合气氛条件下进行,控制混合气氛的露点在-3(TC以下,然后涂 覆绝缘层并烘干,获得高性能无取向硅钢成品。
[0019]所述的无取向硅钢铸带中柱状晶比例大于50%,且存在均匀分布的珠光体组织。 [0020]所述的无取向硅钢成品退火采用两阶段退火制度,第一阶段利用脱碳退火促进 {100}取向晶粒的遗传组织回复和初步长大,第二阶段退火促进有利织构的发展。
[0021]所述的无取向硅钢冷乳退火板{100} <〇vw>取向织构面积分数超过60%。
[0022]所述的无取向磁性能为:P15/5Q为1.4〜3.5W/kg,全周向磁感B5〇为1.73〜1.84T。 [0023] 所述的步骤⑷中,单阶段多道次冷乳的每道次压下量为15%〜30%。
[0024]所述的步骤⑸中,氮气氢气混合气氛的体积比例为20%〜80%H2+N2。
[0025] 本发明基于薄带连铸工艺,其技术原理如下:
[0026] 钢水经中间包流入结晶辊内,薄带连铸亚快速凝固过程中,通过成分优化和控制 浇铸过热度控制铸带中柱状晶比例大于50%,且存在少量均匀分布的珠光体组织。不同钢 种和铸带厚度采用不同乳制工艺(单阶段或者两阶段冷乳):硅含量较低(1.5〜2.5%)且铸 带厚度在1.5〜2.0mm之间时可进行单阶段冷轧;硅含量较高(2.0〜3.2%)且铸带厚度在 2.0〜2.5mm之间时进行两阶段冷乳,中间退火进行部分脱碳,使得在中间退火板表层形成 发达的{100}织构组织。在最终成品退火过程中采用两阶段退火制度,在利用{100}织构遗 传作用的基础上,通过脱碳相变提供U00}形核以及发展的驱动力,最终在成品板中形成较 强的{100}织构(面积分数超过60%)。由于{001} <〇vw>织构在轧面内不存在难磁化方向< 111>,所以能够明显改善磁性能,最终成品板全周向磁感B5Q为1.73〜1.84T,Pi5/5Q为1.4〜 3.5W/kg〇
[0027] 与现有技术相比,本发明的优点及有益效果在于:
[0028] 1、本发明结合薄带连铸亚快速凝固凝固特点,通过控制过热度和化学成分优化, 使得铸带中柱状晶比例大于50%,且存在少量均匀分布的珠光体组织。
[0029] 2、本发明根据铸带厚度以及化学成分合理匹配冷乳工艺。当硅含量较低且铸带较 薄时可选择单阶段冷轧,能够在避免出现边裂以及瓦垄状缺陷的基础上最大程度利用 {100丨织构的遗传作用,同时简化乳制工艺。当硅含量较低且铸带较薄时,选择两阶段冷乳, 并在中间退火阶段部分脱碳,在退火板表面形成{100}织构,作为后续冷轧-退火过程中 U 00}织构的“种子”。
[0030] 3、本发明最终无取向硅钢成品退火采用两阶段退火制度,第一阶段利用脱碳退火 促进{100}取向晶粒的遗传组织回复和初步长大。第二阶段退火促进有利织构的发展。成品 退火板明显提高各向同性,在板面任意方向B5Q为1.73〜1.84T,P15/5Q为1_4〜3.5W/kg,满足 高牌号高磁感低铁损无取向硅钢的性能要求;
[0031] 4、本发明工艺流程短,制造方法具体可行,节能降耗明显。
附图说明
[0032]图1为本发明基于薄带连铸制备发达U〇〇}面织构无取向硅钢薄带的方法流程示 意图;
[0033]图2为本发明实施例1中铸带微观组织显微图。
具体实施方式
[0034] 在具体实施过程中,采用的薄带连铸机为专利(公开号CN103551532A)公开的薄带 连铸机。如图1所示,基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法流程如下: 按设定成分冶炼钢水,进入薄带连铸机完成薄带连铸过程,出铸机后的铸带进行一道次热 车L,热轧带经酸洗后进行冷乳,得到目标厚度薄带后进行两阶段再结晶退火,退火板表面涂 绝缘涂层并烘干,得到无取向硅钢成品。
[0035]下面,通过实施例对本发明进一步详细阐述。
[0036] 实施例1
[0037]本实施例中,基于薄带连铸制备发达{100丨面织构无取向硅钢薄带的方法,按以下 步骤进行:
[0038] 按设定成分冶炼钢水,其成分按重量百分比为:C 0.01 %,Si 1.5%,Mn 0.2%,A1 0.0046%,S 0.002%,余量为Fe;
[0039] 薄带连铸过程:将钢水通过浇口进入中间包,中间包预热温度1200°C,控制过热度 为45°C,钢水通过中间包进入薄带连铸机后形成铸带,控制铸速45m/min,控制溶池液位高 度130mm,控制铸带厚度1.8mm;无取向硅钢铸带中柱状晶比例达到80%,且存在少量均匀分 布的珠光体组织。
[0040] 铸带出辊后在惰性气氛条件下自然冷却至热乳机,热乳温度1000°C,终乳温度950 °c,压下量18%,热轧后卷取;
[0041] 将热卷清理掉氧化皮后进行单阶段多道次冷乳,总压下量为70%,每道次压下量 为20〜25 %,获得冷轧带卷;
[0042] 将冷轧带通过连续退火进行热处理,在840〜860°C进行再结晶退火,时间为200〜 240s;继续加热在950〜980°C进行第二阶段再结晶退火,时间为120〜180s。第一阶段再结 晶退火在氮气氢气混合气氛(本实施例的氮气氢气混合气氛的体积比例为3:1)条件下进 行,控制混合气氛的露点在+30°C脱碳。第二阶段再结晶退火在所述氮气氢气混合气氛条件 下进行,控制混合气氛的露点在-3(TC以下,然后涂覆绝缘层并烘干,获得高性能无取向硅 钢成品,无取向娃钢冷乳退火板{100} <0vw>取向织构面积分数65%。无取向娃钢成品板磁 性能为:P15/5Q为2 • 5〜3 • 5W/kg,全周向磁感B5q为1.76〜1 • 84T。
[0043] 如图2所示,从铸带微观组织显微图可以看出,铸带组织为粗大的柱状晶和少量小 晶粒组成,柱状晶比例超过60%,其中在柱状晶区域存在部分细小的珠光体组织。
[0044] 实施例2
[0045] 本实施例中,基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法,按以下 步骤进行:
[0046] 按设定成分冶炼钢水,其成分按重量百分比为:C 0.04%,Si 2.5%,Mn 0.3%,A1 0.0038%,S 0.005%,余量为Fe;
[0047]薄带连铸过程:将钢水通过浇口进入中间包,中间包预热温度1230°C,控制过热度 为30°C,钢水通过中间包进入薄带连铸机后形成铸带,控制铸速40m/min,控制熔池液位高 度110mm,控制铸带厚度1.5mm;无取向硅钢铸带中柱状晶比例55%,且存在少量均匀分布的 珠光体组织。
[0048] 铸带出辊后在惰性气氛条件下自然冷却至热乳机,热乳温度980°C,终乳温度940 °C,压下量16%,热乳后卷取;
[0049]将热卷清理掉氧化皮后进行单阶段多道次冷乳,总压下量为65%,每道次压下量 为20〜25%,获得冷乳带卷;
[0050] 将冷轧带通过连续退火进行热处理,在850〜880°C进行再结晶退火,时间为200〜 240s;继续加热在980〜1000°C进行第二阶段再结晶退火,时间为120〜ISOs。第一阶段再结 晶退火在氮气氢气混合气氛(本实施例的氮气氢气混合气氛的体积比例为2:1)条件下进 行,控制混合气氛的露点在+30°C脱碳。第二阶段再结晶退火在所述氮气氢气混合气氛条件 下进行,控制混合气氛的露点在-30°C以下,然后涂覆绝缘层并烘千,获得高性能无取向硅 钢成品,无取向硅钢冷乳退火板{100} <0vw>取向织构面积分数65 %。无取向硅钢成品板磁 性能为:P15/5Q为2.0〜3.2W/kg,全周向磁感&Q为1 • 73〜1 • 8〇T。
[0051] 实施例3
[0052] 本实施例中,基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法,按以下 步骤进行:
[0053] 按设定成分冶炼钢水,其成分按重量百分比为:C 0_02%,Si 2_0%,Mn 0.2%,A1 0.0043%,S 0.002%,余量为Fe;
[0054]薄带连铸过程:将钢水通过浇口进入中间包,中间包预热温度1220°C,控制过热度 为40°C,钢水通过中间包进入薄带连铸机后形成铸带,控制铸速60m/min,控制熔池液位高 度120mm,控制铸带厚度2.1mm;无取向硅钢铸带中柱状晶比例65%,且存在少量均匀分布的 珠光体组织。
[0055] 铸带出辊后在惰性气氛条件下自然冷至热乳机,热乳温度970°C,终乳温度930°C, 压下量14%,热轧后卷取。
[0056]将热卷清理掉氧化皮后进行两阶段多道次冷轧,第一阶段压下量为55%,在850°C 保温时间160s进行中间退火,控制混合气氛的露点在+3(TC脱碳,第二段总压下量为70%, 获得冷轧带卷;
[0057] 将冷乳带通过连续退火进行热处理,在850〜880 °C进行再结晶退火,时间为120〜 200s;继续加热在950〜980°C进行第二阶段再结晶退火,时间为120〜180s。第一阶段再结 晶退火在氮气氢气混合气氛(本实施例的氮气氢气混合气氛的体积比例为1:1)条件下进 行,控制混合气氛的露点在+30°C脱碳。第二阶段再结晶退火在所述氮气氢气混合气氛条件 下进行,控制混合气氛的露点在_3(TC以下,然后涂覆绝缘层并烘干,获得高性能无取向硅 钢成品,无取向桂钢冷乳退火板{100}〈〇vw>取向织构面积分数80%。无取向娃钢成品板磁 性能为:P15/5Q为2.0〜3.2W/kg,全周向磁感B5Q为1.75〜1.84T。
[0058] 实施例4
[0059] 本实施例中,基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法,按以下 步骤进行:
[0060] 按设定成分冶炼钢水,其成分按重量百分比为:C 0.05%,Si 3.0%,Mn 0.3%,A1 0.0039%,S 0.005%,余量为Fe;
[0061]薄带连铸过程:将钢水通过浇口进入中间包,中间包预热温度1250°C,控制过热度 为50°C,钢水通过中间包进入薄带连铸机后形成铸带,控制铸速50m/min,控制熔池液位高 度140mm,控制铸带厚度2.2mm;无取向硅钢铸带中柱状晶比例75%,且存在少量均匀分布的 珠光体组织。
[0062]铸带出辊后在惰性气氛条件下自然冷至热乳机,热轧温度960°C,终轧温度92(TC, 压下量12%,热乳后卷取。
[0063] 将热卷清理掉氧化皮后进行两阶段多道次冷轧,第一阶段压下量为52%,在90(TC 保温时间120s进行中间退火,控制混合气氛的露点在+3(TC脱碳,第二段总压下量为65%, 获得冷乳带卷;
[0064] 将冷乳带通过连续退火进行热处理,在88(TC进行再结晶退火,时间为120〜200s; 继续加热在980〜1000°C进行第二阶段再结晶退火,时间为120〜180s。第一阶段再结晶退 火在氮气氢气混合气氛(本实施例的氮气氢气混合气氛的体积比例为1:2)条件下进行,控 制混合气氛的露点在+30°C脱碳。第二阶段再结晶退火在所述氮气氢气混合气氛条件下进 行,控制混合气氛的露点在-30°C以下,然后涂覆绝缘层并烘干,获得高性能无取向硅钢成 品,无取向硅钢冷轧退火板{100} <Ovw>取向织构面积分数70 %。无取向硅钢成品板磁性能 为:Pi5/5〇为 1.4 〜2.5W/kg,全周向磁感 B5Q为1.73〜1.80T。
[0065] 实施例5
[0066]本实施例中,基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法,按以下 步骤进行:
[0067]按设定成分冶炼钢水,其成分按重量百分比为:c 0.03%,Si 2.8%,Mn 0.3%,A1 0.0026%,S 0.003%,余量为Fe;
[0068]薄带连铸过程:将钢水通过浇口进入中间包,中间包预热温度1240°C,控制过热度 为60°C,钢水通过中间包进入薄带连铸机后形成铸带,控制铸速55m/min,控制熔池液位高 度15〇_,控制铸带厚度2.5mm;无取向硅钢铸带中柱状晶比例85%,且存在少量均匀分布的 珠光体组织。
[0069]铸带出辊后在惰性气氛条件下自然冷至热轧机,热乳温度950°C,终乳温度900°C, 压下量10%,热乳后卷取。
[0070]将热卷清理掉氧化皮后进行两阶段多道次冷轧,第一阶段压下量为58%,在90(TC 保温时间180s进行中间退火,控制混合气氛的露点在+30°C脱碳,第二段总压下量为78%, 获得冷轧带卷;
[0071]将冷轧带通过连续退火进行热处理,在900°C进行再结晶退火,时间为120〜200S; 继续加热在1000°c进行第二阶段再结晶退火,时间为120〜180s。第一阶段再结晶退火在氮 气氢气混合气氛(本实施例的氮气氢气混合气氛的体积比例为1:2)条件下进行,控制混合 气氛的露点在+3〇°C脱碳。第二阶段再结晶退火在所述氮气氢气混合气氛条件下进行,控制 混合气氛的露点在-30°C以下,然后涂覆绝缘层并烘干,获得高性能无取向硅钢成品,无取 向硅钢冷乳退火板{100}<0vw>取向织构面积分数75%。无取向硅钢成品板磁性能为:P15/50 为1 • 5〜2.2W/kg,全周向磁感B5。为1.75〜1.82T。
[0072]实施例结果表明,本发明提供基于薄带连铸制备发达{1〇0}面织构无取向硅钢薄 带的方法,在部分利用初始凝固组织中{100丨织构的遗传作用基础上,通过后续脱碳相变提 供驱动力,促使成品板中形成发达的{100}面织构,从而获得高性能无取向硅钢。
Claims (7)
1. 一种基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法,其特征在于,按以 下步骤进行: (1) 按设定成分冶炼钢水,其成分按重量百分比为:c 0.01〜0.04%,Si 1.5〜2.5%, Mn 0.2〜0.3%,A1彡0.005%,S 0.002〜0.005%,余量为Fe及不可避免杂质; (2) 薄带连铸过程:将钢水通过浇口进入中间包,中间包预热温度1200〜1250°C,控制 过热度为30〜60°C,钢水通过中间包进入薄带连铸机后形成铸带,控制铸速40〜60m/min, 控制熔池液位高度100〜150mm,控制铸带厚度1.5〜2.Oram; (3) 铸带出辊后在惰性气氛条件下自然冷却至热乳机,热轧温度950〜100(TC,终乳温 度900〜950°C,压下量10〜20%,热轧后卷取; ^:)将热卷清理掉氧化皮后进行单阶段多道次冷乳,总压下量为60〜80%,获得冷轧带 卷; (5)将冷乳带通过连续退火进行热处理,在S40〜S8(TC进行再结晶退火,时间为200〜 240s;继续加热在950〜1000°C进行第二阶段再结晶退火,时间为120〜180s;第一阶段再结 晶退火在氮气氢气混合气氛条件下进行,控制混合气氛的露点在+30°C脱碳;第二阶段再结 晶退火在氮气氢气混合气氛条件下进行,控制混合气氛的露点在-30°C以下,然后涂覆绝缘 层并供干,获得尚性能无取向娃钢成品。
2. —种基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法,其特征在于,按以 下步骤进行: (1) 按设定成分冶炼钢水,其成分按重量百分比为:C 0.02〜0.05%,Si 2.0〜3.0%, Mn 0.2〜0.3%,A1彡0.005%,S 0.002〜0.005%,余量为Fe及不可避免杂质; (2) 薄带连铸过程:将钢水通过浇口进入中间包,中间包预热温度1200〜1250°C,控制 过热度为30〜60°C,钢水通过中间包进入薄带连铸机后形成铸带,控制铸速40〜60m/min, 控制熔池液位高度100〜150mm,控制铸带厚度2.0〜2.5mm; (3) 铸带出親后在惰性气氛条件下自然冷至热乳机,热乳温度950〜1000°C,终乳温度 900〜950°C,压下量10〜20%,热乳后卷取; (4) 将热卷清理掉氧化皮后进行两阶段多道次冷乳,第一阶段压下量为50〜60%,在 850〜900°C保温12〇〜180s进行中间退火,控制混合气氛的露点在+30°C脱碳,促进表面形 成发达的{100}组织,第二段总压下量为60〜80%,获得冷乳带卷; (5) 将冷乳带通过连续退火进行热处理,在850〜9〇0°C进行再结晶退火,时间为120〜 2〇〇s;继续加热在950〜100(TC进行第二阶段再结晶退火,时间为120〜180s;第一阶段再结 晶退火在氮气氢气混合气氛条件下进行,控制混合气氛的露点在+3(TC脱碳;第二阶段再结 晶退火在氮气氢气混合气氛条件下进行,控制混合气氛的露点在-30°C以下,然后涂覆绝缘 层并烘干,获得高性能无取向桂钢成品。
3. 根据权利要求1或2所述的基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方 法,其特征在于,所述的无取向硅钢铸带中柱状晶比例大于50%,且存在均匀分布的珠光体 组织。
4. 根据权利要求1或2所述的基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方 法,其特征在于,所述的无取向硅钢冷乳退火板{100} <0vw>取向织构面积分数超过60%。
5. 根据权利要求1或2所述的基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方 法,其特征在于,所述的无取向磁性能为:Pi5/5Q为1.4〜3_5W/kg,全周向磁感出〇为1.73〜 1.84T。
6.根据权利要求1所述的基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法, 其特征在于,所述的步骤⑷中,单阶段多道次冷轧的每道次压下量为15%〜30%。
7.根据权利要求1或2所述的基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方 法,其特征在于,所述的步骤⑸中,氮气氢气混合气氛的体积比例为20%〜80%H2+N2。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710402813.7A CN107245647B (zh) | 2017-06-01 | 2017-06-01 | 一种基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710402813.7A CN107245647B (zh) | 2017-06-01 | 2017-06-01 | 一种基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107245647A CN107245647A (zh) | 2017-10-13 |
CN107245647B true CN107245647B (zh) | 2018-10-16 |
Family
ID=60018660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710402813.7A Active CN107245647B (zh) | 2017-06-01 | 2017-06-01 | 一种基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107245647B (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT524149A1 (de) * | 2020-08-20 | 2022-03-15 | Nntech Gmbh | Verfahren zur Bearbeitung eines Stahlblechs |
AT524148A1 (de) * | 2020-08-20 | 2022-03-15 | Nntech Gmbh | Verfahren zur Herstellung eines Elektrobands |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108080416A (zh) * | 2017-12-28 | 2018-05-29 | 滁州宝岛特种冷轧带钢有限公司 | 一种紧凑型中宽带钢生产工艺 |
CN108203788B (zh) * | 2018-01-29 | 2019-10-22 | 东北大学 | 一种薄带连铸低磁各向异性无取向硅钢的制备方法 |
CN108277335B (zh) * | 2018-01-29 | 2019-04-12 | 东北大学 | 一种增强薄带连铸无取向硅钢{100}再结晶织构的方法 |
CN114134423A (zh) * | 2021-12-02 | 2022-03-04 | 东北大学 | 一种超短流程稀土取向硅钢及其制备方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07278665A (ja) * | 1994-04-08 | 1995-10-24 | Nippon Steel Corp | 磁束密度が高い無方向性電磁鋼板の製造方法 |
KR100321035B1 (ko) * | 1997-11-04 | 2002-03-08 | 이구택 | 수요가 열처리후 자기특성이 우수한 무방향성 전기강판 및 그제조방법 |
CN104372238B (zh) * | 2014-09-28 | 2016-05-11 | 东北大学 | 一种取向高硅钢的制备方法 |
CN104762551B (zh) * | 2015-04-15 | 2017-09-01 | 江苏沙钢集团有限公司 | 一种薄带连铸高磁感无取向硅钢的制造方法 |
CN104962815B (zh) * | 2015-07-15 | 2017-10-24 | 东北大学 | 一种高磁感取向硅钢及其制造方法 |
-
2017
- 2017-06-01 CN CN201710402813.7A patent/CN107245647B/zh active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT524149A1 (de) * | 2020-08-20 | 2022-03-15 | Nntech Gmbh | Verfahren zur Bearbeitung eines Stahlblechs |
AT524148A1 (de) * | 2020-08-20 | 2022-03-15 | Nntech Gmbh | Verfahren zur Herstellung eines Elektrobands |
Also Published As
Publication number | Publication date |
---|---|
CN107245647A (zh) | 2017-10-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107245647B (zh) | 一种基于薄带连铸制备发达{100}面织构无取向硅钢薄带的方法 | |
CN107164690B (zh) | 一种基于薄带连铸制备{100}面发达织构无取向硅钢薄带的方法 | |
CN101139681B (zh) | 中高牌号冷轧无取向硅钢及其制造方法 | |
CN107245646B (zh) | 一种板面周向高磁感低铁损无取向硅钢的制备方法 | |
CN103305753B (zh) | 一种薄带连铸低碳微合金钢带制造方法 | |
CN102102141B (zh) | 改善取向硅钢板组织均匀性的热轧工艺 | |
CN104372238A (zh) | 一种取向高硅钢的制备方法 | |
CN102575314B (zh) | 低铁损、高磁通密度、取向电工钢板及其制造方法 | |
CN104726668A (zh) | 一种高效生产高磁感取向硅钢的方法 | |
CN104911322B (zh) | 一种利用轧制制备取向高硅钢薄板的方法 | |
CN107058874B (zh) | 一种基于薄带连铸制备高磁感无取向硅钢薄规格产品的方法 | |
CN110468352A (zh) | 一种无取向硅钢及其生产方法 | |
CN106755875A (zh) | 高磁感无取向高硅钢连续退火工艺 | |
CN107164693B (zh) | 一种基于薄带连铸高硅钢冷轧带钢的制备方法 | |
CN104726670B (zh) | 一种短流程中薄板坯制备高磁感取向硅钢的方法 | |
CN106756528B (zh) | 一种高氮中锰钢薄带及其近终成形制备方法 | |
CN107779727A (zh) | 一种取向硅钢的生产方法 | |
CN107217198B (zh) | 一种基于薄带连铸制备旋转立方双取向硅钢的方法 | |
CN103305754B (zh) | 一种时效硬化薄带连铸低碳微合金钢带制造方法 | |
CN110055393A (zh) | 一种薄规格低温高磁感取向硅钢带生产方法 | |
CN108203788B (zh) | 一种薄带连铸低磁各向异性无取向硅钢的制备方法 | |
CN107201478B (zh) | 一种基于异径双辊薄带连铸技术的超低碳取向硅钢制备方法 | |
CN113403455A (zh) | 无取向硅钢的生产方法 | |
CN109182907B (zh) | 一种无头轧制生产半工艺无取向电工钢的方法 | |
CN101748253B (zh) | 低温go取向硅钢的制备方法 |
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 |