CN114959488B - 一种工业纯铁中厚板及其生产方法 - Google Patents
一种工业纯铁中厚板及其生产方法 Download PDFInfo
- Publication number
- CN114959488B CN114959488B CN202210682260.6A CN202210682260A CN114959488B CN 114959488 B CN114959488 B CN 114959488B CN 202210682260 A CN202210682260 A CN 202210682260A CN 114959488 B CN114959488 B CN 114959488B
- Authority
- CN
- China
- Prior art keywords
- less
- equal
- rolling
- pure iron
- medium plate
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 135
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 63
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000005096 rolling process Methods 0.000 claims abstract description 64
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000003723 Smelting Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000009749 continuous casting Methods 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 7
- 238000007689 inspection Methods 0.000 claims abstract description 5
- 238000007670 refining Methods 0.000 claims abstract description 5
- 238000007730 finishing process Methods 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims description 16
- 239000012535 impurity Substances 0.000 claims description 9
- 238000002791 soaking Methods 0.000 claims description 4
- 238000005336 cracking Methods 0.000 description 4
- 230000005496 eutectics Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 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
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- 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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—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
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0242—Flattening; Dressing; Flexing
-
- 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
- C21D8/1238—Flattening; Dressing; Flexing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
-
- 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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- 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
-
- 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
- C22C38/20—Ferrous alloys, e.g. steel alloys containing chromium with copper
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
-
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0071—Levelling the rolled product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
本发明涉及一种工业纯铁中厚板及其生产方法,属于钢铁冶炼技术领域,解决不同种类工业纯铁中厚板生产过程中易发生轧制边裂、应力开裂、板形瓢曲等技术问题。解决方案为:一种工业纯铁中厚板及其生产方法,生产工艺路线为:铁水预处理—转炉冶炼+RH真空精炼—连铸—切割中板坯—坯料加热—高压水除磷—轧制—空冷精整—检验交库。所述坯料加热工艺采用三段式加热炉。所述轧制工艺采用高温粗轧+低温精轧的方式。所述空冷精整工艺步骤中,针对厚度50mm以下规格板材,采用空冷+冷矫的方式对钢板板形进行处理;针对厚度50mm及以上规格板材,采用热矫+空冷的方式对钢板板形进行处理。本发明具有工艺流程简单、工序成本低、成品率高等特点。
Description
技术领域
本发明属于钢铁冶炼技术领域,具体涉及一种工业纯铁中厚板及其生产方法。
背景技术
工业纯铁是钢的一种,其化学成分主要是铁,含量在99.50%~99.90%,含碳量在0.04%以下,其他元素愈少愈好。因为它实际上还不是真正的纯铁,所以称这一种接近于纯铁的钢为工业纯铁。一般工业纯铁质地特别软,韧性特别大,电磁性能很好。常见的工业纯铁有两种用途,一种利用材料的高纯度铁的特点,主要应用于冶炼各种高温合金,为原料纯铁;一种利用材料的优良电磁性能特点,主要应用于电工行业,为电磁纯铁。
出于提高材料收得率等原因,部分工业纯铁采用中板单张轧制的方式进行生产,由于纯铁本身钢种特性及中厚板生产特点,在纯铁中厚板生产过程中易存在轧制边裂、应力开裂、板形瓢曲等问题。
发明内容
为了克服现有技术的不足,解决不同种类工业纯铁中厚板生产过程中易发生轧制边裂、应力开裂、板形瓢曲等技术问题,本发明提供一种工业纯铁中厚板及其生产方法。
本发明通过以下技术方案予以实现。
本发明提供了一种工业纯铁中厚板,所述工业纯铁包括电磁纯铁DT4、原料纯铁YT01、原料纯铁YT2;
电磁纯铁DT4中厚板各元素成分重量百分比为:C≤0.005、Si≤0.05、Mn:0.17~0.23、P≤0.015、S≤0.01、Al:0.45~0.65、Cr≤0.05、Ni≤0.05、Cu≤0.05,余量为Fe和不可避免的杂质;
原料纯铁YT01中厚板各元素成分重量百分比为:C≤0.003、Si≤0.01、Mn≤0.02、P≤0.008、S≤0.004、Al≤0.02、Cr≤0.02、Ni≤0.02、Cu≤0.02,余量为Fe和不可避免的杂质;
原料纯铁YT2中厚板各元素成分重量百分比为:C≤0.008、Si≤0.04、Mn≤0.14、P≤0.012、S≤0.006、Al≤0.05、Cr≤0.02、Ni≤0.02、Cu≤0.05,余量为Fe和不可避免的杂质。
由于S含量的过高会在铁碳合金中以FeS的形式存在,结晶时与铁形成低熔点的Fe+FeS共晶体聚集在晶界上,轧制过程中沿晶界发生破碎,特别是在连铸坯的两侧,轧制的两边易出现轧制边裂。因此工业纯铁冶炼时会严格控制铁水中的S含量,同时由于Mn元素与S更容易形成高熔点的MnS,可实现固S的作用,因此本发明针对中厚板的特点对Mn元素进行内控,对原料纯铁YT01,Mn元素成分重量百分比在符合标准的前提下目标按照0.01~0.02%进行控制;对于原料纯铁YT2,Mn元素成分重量百分比按照0.05%~0.14%进行控制,并尽量保证Mn/S比在4以上;对于电磁纯铁DT4由于材料使用过程要求需保证良好的机械加工性能,因此Mn含量较高,按照0.17~0.23%范围控制即可。
一种工业纯铁中厚板的生产方法,生产工艺路线为:铁水预处理—转炉冶炼+RH真空精炼—连铸—切割中板坯—坯料加热—高压水除磷—轧制—空冷精整—检验交库;
所述坯料加热工艺采用三段式加热炉,纯铁在预热段温度≤1100℃,加热段温度设置1200~1240℃、均热段温度设置1220~1260℃,总驻炉时间9~11min/10mm,目标10min/10mm;
所述高压水除磷工艺包括两次除磷,其中第一次除磷在开轧前,第二次除磷在粗轧机轧制成中间坯后;
所述轧制工艺采用高温粗轧+低温精轧的方式,由于纯铁在降温过程中可能出现同素异构体转变,在900℃附近由γ-Fe转变为α-Fe,晶胞体积的变化易在较低温度是产生较高的组织应力,在后续轧制过程中可能会形成轧制裂纹。因此轧制工艺设计时尽量避开此温度。其中:粗轧机的开轧温度≥1100℃,采用大压下快速轧制,保证粗轧机中间坯温度大于950℃;精轧机的开轧温度控制在850℃以下,终轧温度≥750℃,既确保轧制板形,又防止轧制温度低时钢板边部开裂;为防止裂边产生,粗轧机轧制方式为展宽纵轧,展宽量目标为90mm;
所述空冷精整工艺步骤中,由于纯铁中板低屈服强度的特点,为保证钢板板形平直,针对厚度50mm以下规格板材,采用空冷+冷矫的方式对钢板板形进行处理,即冷床上空冷至目标温度300℃以下后再进行拉钢操作,然后进冷矫矫平钢板;针对厚度50mm及以上规格板材,采用热矫+空冷的方式对钢板板形进行处理,即采用往复三次热矫去除钢板轧制过程内应力,冷床上空冷至目标温度200℃以下后取下,防止钢板吊运过程发生变形。
进一步,轧制工艺过程中,若轧制原料纯铁YT01中厚板且其Mn/S比小于4时,其展宽量目标调整为110mm。
本发明针对不同材质中厚板的特点对Mn元素进行控制,并在轧制过程根据锰硫比对展宽目标的调整可解决因边裂造成的钢板尺寸不合,提升成品率;采用高温粗轧低温精轧的方式,有效缓解了因“红脆”造成的钢板开裂问题;根据不同规格制定冷却及矫直工艺可有效避免轧后钢板在吊运过程发生的变形问题,保证交货状态钢板板形满足用户要求。通过本申请所述工艺方式生产的工业纯铁中厚板热轧综合成材率可达到92%以上,相对于扁锭、圆棒等生产方式具有工艺流程简单、工序成本低等特点。
具体实施方式
下面结合实施例对本发明作进一步的详细描述。
实施例1:
2021年8月份采用下述技术方案生产合格并交付客户使用原料纯铁YT01材质中厚板80吨。生产工艺路线为:铁水预处理—转炉冶炼+RH真空精炼—连铸—切割中板坯—坯料加热—高压水除磷—轧制—空冷精整—检验交库;
原料纯铁YT01中厚板中各元素成分重量百分比为:
C:0.0022、Si:0.0051、Mn:0.0137、P≤0.0046、S:0.0032、Al:0.0148、Cr:0.0091、Ni:0.0053、Cu:0.0038,余量为Fe和不可避免的杂质,杂质中有害元素As、Sn的重量百分比分别为0.0026、0.001,Mn/S为4.28;
坯料连铸规格为220×1260×2150mm,所述坯料加热工艺采用三段式加热炉,加热炉预热段温度设置为1030~1080℃,加热段温度设置为1220~1240℃、均热段温度设置为1230~1250℃,坯料总驻炉时间210~230分钟。
所述高压水除磷工艺包括两次除磷,其中第一次除磷在开轧前,第二次除磷在粗轧机轧制成中间坯后。
所述轧制工艺采用高温粗轧+低温精轧的方式,其中:除磷后开轧温度显示1130~1150℃,粗轧机采用展宽纵轧方式生产,展宽量控制为85~95mm,采用大压下快速轧制,粗轧机中间坯温度为950~970℃,送往精轧机;精轧机的开轧温度为840~850℃,轧至目标厚度时终轧温度为780~800℃。
由于合同规定目标板材厚度规格为50mm,采用热矫+空冷方式处理,钢板在热矫进行三遍矫直后至冷床空冷,空冷至180~200℃后采用机械夹钳将钢板吊下。然后进行离线等离子取样、切割,即可完成。
实施例2:
2021年8月份采用下述技术方案生产合格并交付客户使用电磁纯铁DT4材质中厚板54吨。生产工艺路线为:铁水预处理—转炉冶炼+RH真空精炼—连铸—切割中板坯—坯料加热—高压水除磷—轧制—空冷精整—检验交库;
电磁纯铁DT4中厚板中各元素成分重量百分比为:
C:0.0016、Si:0.0041、Mn:0.1923、P≤0.006、S:0.0024、Al:0.5046、Cr:0.006、Ni:0.0089、Cu:0.0036,余量为Fe和不可避免的杂质;
坯料连铸规格为220×1260×1700mm~220×1260×2100mm,所述坯料加热工艺采用三段式加热炉,加热炉预热段温度1020~1080℃,加热段1230~1240℃、均热段炉温1240~1250℃,坯料总驻炉时间210~230分钟。
所述高压水除磷工艺包括两次除磷,其中第一次除磷在开轧前,第二次除磷在粗轧机轧制成中间坯后。
所述轧制工艺采用高温粗轧+低温精轧的方式,其中:除磷后开轧温度显示1130~1150℃,粗轧机采用展宽纵轧方式生产,展宽量控制为85~95mm,采用大压下快速轧制,粗轧机中间坯温度为960~980℃送往精轧机;精轧机的开轧温度为840~850℃,轧至目标厚度时终轧温度为760~780℃。
由于合同规定目标板材厚度规格为14mm,采用空冷+冷矫的方式对钢板板形进行处理,冷床上控冷目标温度300℃以下后再进行拉钢操作,然后进冷矫矫平钢板。再进行离线等离子取样、切割,即可完成。
上面对本发明的实施方式作了详细说明,但是本发明并不限于上述实施方式,在本领域普通技术人员所具备的知识范围内,依然可以对实施方式进行更改,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (4)
1.一种工业纯铁中厚板的生产方法,其特征在于:生产工艺路线为:铁水预处理—转炉冶炼+RH真空精炼—连铸—切割中板坯—坯料加热—高压水除磷—轧制—空冷精整—检验交库;
所述坯料加热工艺采用三段式加热炉,预热段温度设置为1020~1080℃,加热段温度设置为1200~1240℃、均热段温度设置为1220~1260℃,总驻炉时间为9~11min/10mm;
所述高压水除磷工艺包括两次除磷,其中第一次除磷在开轧前,第二次除磷在粗轧机轧制成中间坯后;
所述轧制工艺采用高温粗轧+低温精轧的方式,其中:粗轧机的开轧温度1100~1150℃,采用大压下快速轧制,粗轧机中间坯温度950~980℃;精轧机的开轧温度为840~850℃、终轧温度750~800℃;粗轧机轧制方式为展宽纵轧,展宽量为85~95mm;
所述空冷精整工艺步骤中,针对厚度50mm以下规格板材,采用空冷+冷矫的方式对钢板板形进行处理,即冷床上空冷至目标温度300℃以下后再进行拉钢操作,然后进冷矫矫平钢板;针对厚度50mm及以上规格板材,采用热矫+空冷的方式对钢板板形进行处理,即采用往复三次热矫去除钢板轧制过程内应力,冷床上空冷至目标温度200℃以下后取下;
所述工业纯铁包括电磁纯铁DT4、原料纯铁YT01、原料纯铁YT2;
电磁纯铁DT4中厚板各元素成分重量百分比为:C≤0.005、Si≤0.05、Mn:0.17~0.23、P≤0.015、S≤0.01、Al:0.45~0.65、Cr≤0.05、Ni≤0.05、Cu≤0.05,余量为Fe和不可避免的杂质;
原料纯铁YT01中厚板各元素成分重量百分比为:C≤0.003、Si≤0.01、Mn≤0.02、P≤0.008、S≤0.004、Al≤0.02、Cr≤0.02、Ni≤0.02、Cu≤0.02,余量为Fe和不可避免的杂质;
原料纯铁YT2中厚板各元素成分重量百分比为:C≤0.008、Si≤0.04、Mn≤0.14、P≤0.012、S≤0.006、Al≤0.05、Cr≤0.02、Ni≤0.02、Cu≤0.05,余量为Fe和不可避免的杂质。
2.根据权利要求1所述的一种工业纯铁中厚板的生产方法,其特征在于:所述坯料加热工艺总驻炉时间为10min/10mm。
3.根据权利要求1所述的一种工业纯铁中厚板的生产方法,其特征在于:所述原料纯铁YT01中厚板Mn元素成分重量百分比为:0.01~0.02%;原料纯铁YT2中厚板Mn元素成分重量百分比为:0.05%~0.14%。
4.根据权利要求1所述的一种工业纯铁中厚板的生产方法,其特征在于:轧制工艺过程中,若轧制原料纯铁YT01中厚板且其Mn/S比小于4时,其展宽量调整为110mm。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210682260.6A CN114959488B (zh) | 2022-06-16 | 2022-06-16 | 一种工业纯铁中厚板及其生产方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210682260.6A CN114959488B (zh) | 2022-06-16 | 2022-06-16 | 一种工业纯铁中厚板及其生产方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN114959488A CN114959488A (zh) | 2022-08-30 |
CN114959488B true CN114959488B (zh) | 2023-09-26 |
Family
ID=82963321
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202210682260.6A Active CN114959488B (zh) | 2022-06-16 | 2022-06-16 | 一种工业纯铁中厚板及其生产方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN114959488B (zh) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60103131A (ja) * | 1983-11-10 | 1985-06-07 | Nippon Steel Corp | Fe−Νi系低熱膨張合金の中板および厚板の製造方法 |
CN101993973A (zh) * | 2009-08-10 | 2011-03-30 | 鞍钢股份有限公司 | 一种生产高纯度纯铁的方法 |
CN104525560A (zh) * | 2014-12-29 | 2015-04-22 | 天津钢铁集团有限公司 | 普碳钢/含Nb钢20-30mm中厚板麻面的有效控制方法 |
CN110438414A (zh) * | 2019-09-02 | 2019-11-12 | 鞍钢股份有限公司 | 一种消除超宽幅铁素体不锈钢中厚板表面裂纹的方法 |
CN113025895A (zh) * | 2021-02-22 | 2021-06-25 | 莱芜钢铁集团银山型钢有限公司 | 一种高强韧且心部冶金质量良好的微合金化中厚板及其制备方法 |
CN113174462A (zh) * | 2021-04-21 | 2021-07-27 | 宝钢湛江钢铁有限公司 | 一种转炉双渣法冶炼电磁纯铁的方法 |
CN113215476A (zh) * | 2021-03-30 | 2021-08-06 | 湖南华菱湘潭钢铁有限公司 | 一种生产工业纯铁的方法 |
-
2022
- 2022-06-16 CN CN202210682260.6A patent/CN114959488B/zh active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60103131A (ja) * | 1983-11-10 | 1985-06-07 | Nippon Steel Corp | Fe−Νi系低熱膨張合金の中板および厚板の製造方法 |
CN101993973A (zh) * | 2009-08-10 | 2011-03-30 | 鞍钢股份有限公司 | 一种生产高纯度纯铁的方法 |
CN104525560A (zh) * | 2014-12-29 | 2015-04-22 | 天津钢铁集团有限公司 | 普碳钢/含Nb钢20-30mm中厚板麻面的有效控制方法 |
CN110438414A (zh) * | 2019-09-02 | 2019-11-12 | 鞍钢股份有限公司 | 一种消除超宽幅铁素体不锈钢中厚板表面裂纹的方法 |
CN113025895A (zh) * | 2021-02-22 | 2021-06-25 | 莱芜钢铁集团银山型钢有限公司 | 一种高强韧且心部冶金质量良好的微合金化中厚板及其制备方法 |
CN113215476A (zh) * | 2021-03-30 | 2021-08-06 | 湖南华菱湘潭钢铁有限公司 | 一种生产工业纯铁的方法 |
CN113174462A (zh) * | 2021-04-21 | 2021-07-27 | 宝钢湛江钢铁有限公司 | 一种转炉双渣法冶炼电磁纯铁的方法 |
Non-Patent Citations (2)
Title |
---|
中国国家标准化管理委员会.电磁纯铁.中国标准出版社,2008,第1页,附录B. * |
薛正良 等.特种熔炼.冶金工业出版社,2018,第25-26页. * |
Also Published As
Publication number | Publication date |
---|---|
CN114959488A (zh) | 2022-08-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109112423B (zh) | 一种优良低温韧性特厚合金钢板及其制备方法 | |
CN107974638B (zh) | 一种连铸坯制造的厚度达180mm齿条钢板的制造方法 | |
JP2020500108A (ja) | 連続鋳造鋼片により製造された厚さが最大で177.8mmであるギアラック鋼板及びその製造方法 | |
CN110935827B (zh) | 一种较大规格细晶奥氏体不锈钢SNCrW棒材的锻造方法 | |
EP4198158A1 (en) | Steel board for polar marine engineering and preparation method therefor | |
CN112662933A (zh) | 耐低温冲击韧性风电钢的制备方法 | |
CN112143975A (zh) | 一种经济型高效率x70级管线钢及制造方法 | |
CN111349859B (zh) | 一种复合坯轧制大厚度500MPa级高Z向层状性能低温容器钢板及其制造方法 | |
JP2023542427A (ja) | 低コスト高性能q500橋梁用鋼および生産方法 | |
CN112375949A (zh) | 一种车体用高强7系铝合金薄板的热处理工艺 | |
CN110184530B (zh) | 低温及酸性条件下使用的管件用正火态钢板及其制造方法 | |
CN114686768A (zh) | 一种360hb-450hb级耐磨钢及其生产方法 | |
CN109127726B (zh) | 一种工业纯钛板的制备方法 | |
CN114150222A (zh) | 一种大厚度低温压力容器用钢板及其制造方法 | |
CN113802054A (zh) | 一种屈服强度420MPa级热轧钢板及其制造方法 | |
CN115261746B (zh) | 特厚Q420qE桥梁钢板及其生产方法 | |
CN114959488B (zh) | 一种工业纯铁中厚板及其生产方法 | |
CN115125457B (zh) | 一种连铸大圆坯生产的耐-50℃低温石化热交换器管板用钢及其制造方法 | |
CN116005078A (zh) | 一种层状异构组织高强钢的制造方法 | |
CN111321340A (zh) | 一种屈服强度450MPa级热轧钢板及其制造方法 | |
CN115558851A (zh) | 一种370MPa级别工程结构用热轧钢板及其制造方法 | |
CN113604733A (zh) | 一种耐高温和高韧性的高端热作模具钢及其生产工艺 | |
CN114892073B (zh) | 一种适用于冷旋压加工的钢板及其制造方法 | |
CN113667906B (zh) | 一种直条耐候高强度螺栓用精品钢及其生产方法 | |
CN115786806B (zh) | 一种具有良好低温韧性的高强度低碳当量特厚钢板及其制造方法 |
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 |