CN117004890A - 一种高锡量气雾阀门用镀锡铁及其制造方法 - Google Patents
一种高锡量气雾阀门用镀锡铁及其制造方法 Download PDFInfo
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 239000000443 aerosol Substances 0.000 title claims abstract description 45
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 239000005028 tinplate Substances 0.000 claims abstract description 51
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 238000000137 annealing Methods 0.000 claims abstract description 18
- 238000005097 cold rolling Methods 0.000 claims abstract description 18
- 238000005096 rolling process Methods 0.000 claims abstract description 17
- 239000012535 impurity Substances 0.000 claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 9
- 238000007747 plating Methods 0.000 claims description 28
- 238000009749 continuous casting Methods 0.000 claims description 18
- 238000005098 hot rolling Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 16
- 238000004321 preservation Methods 0.000 claims description 16
- 238000005266 casting Methods 0.000 claims description 14
- 238000009628 steelmaking Methods 0.000 claims description 9
- 238000005238 degreasing Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 8
- 238000005554 pickling Methods 0.000 claims description 8
- 230000003746 surface roughness Effects 0.000 claims description 8
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 4
- NNIPDXPTJYIMKW-UHFFFAOYSA-N iron tin Chemical compound [Fe].[Sn] NNIPDXPTJYIMKW-UHFFFAOYSA-N 0.000 claims description 4
- CLOMYZFHNHFSIQ-UHFFFAOYSA-N clonixin Chemical compound CC1=C(Cl)C=CC=C1NC1=NC=CC=C1C(O)=O CLOMYZFHNHFSIQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000002161 passivation Methods 0.000 claims description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims description 2
- 229910001887 tin oxide Inorganic materials 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000004381 surface treatment Methods 0.000 abstract description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 229910052717 sulfur Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000010892 electric spark Methods 0.000 description 6
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- 238000005452 bending Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000532 Deoxidized steel Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
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- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
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- 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
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- C21D8/0236—Cold rolling
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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Abstract
本申请涉及钢压延及表面处理技术领域,公开了一种高锡量气雾阀门用镀锡铁,包括以下的化学成分质量百分比为:C:0.04%~0.07%,Mn:0.45%~0.55%,Si:≤0.03%,P%≤0.015%,S%≤0.02%,余量为铁和不可避免的杂质;所述镀锡铁的夹杂物水平:B类+D类+Ds类夹杂物等级之和≤1级,所述镀锡铁的拉深成型指标:0°、45°及90°方向上塑性应变比r值均大于1.0,其各项异性Δr<0.5。通过全流程工艺设计,冷轧退火工艺参数控制、平整及镀锡工艺参数控制,所得一种高锡量阀门用镀锡板,具备较低的夹杂物水平,较好的性能均匀性以及优良的锡层附着力,所得镀锡板的夹杂物B类+D类+Ds类夹杂物等级之和≤1级。
Description
技术领域
本发明涉及钢压延及表面处理技术领域,具体为一种高锡量气雾阀门用镀锡铁及其制造方法。
背景技术
气雾罐由罐身、顶盖、底盖及阀门组成,阀门铁所用原材厚度一般为0.25—0.3mm,由钢板制成阀门需要经过8道反复冲压的成型方式,在此过程中,原始钢带厚度发生变化,最薄处减薄40%-50%,其反复弯折的成型方式导致其对铁基材的稳定性要求高,包括对冲压成型制耳的要求,对铁材纯净度、拉深性能、厚度及性能均匀性的要求。
阀门用铁根据其内容物的性质不同,镀锡量要求一般为5.6或8.4g/m2,高锡量的表面在反复冲压的过程中极易发生锡层划伤及脱落问题。因此,阀门用铁对表面锡层的附着力等参数均提出了严格的要求。目前国内多数研究都集中在镀锡板涂膜后的附着力,从而导致锡层本身的附着力较低,会导致对于部分冲压品种质量降低的问题。
发明内容
针对现有技术的不足,本发明提供了一种高锡量气雾阀门用镀锡铁及其制造方法,解决了导致锡层本身的附着力较低,会导致对于部分冲压品种质量降低的问题。
为实现以上目的,本发明通过以下技术方案予以实现:一种高锡量气雾阀门用镀锡铁及其制造方法,包括以下的化学成分质量百分比为:C:0.04%~0.07%,Mn:0.45%~0.55%,Si:≤0.03%,P%≤0.015%,S%≤0.02%,余量为铁和不可避免的杂质;
所述镀锡铁的夹杂物水平:B类+D类+Ds类夹杂物等级之和≤1级。
所述镀锡铁的拉深成型指标:0°、45°及90°方向上塑性应变比r值均大于1.0,其各项异性Δr<0.5,屈服强度250-300Mpa,延伸率≥35%。
所述镀锡铁的表面形貌:Ra达到0.3-0.6um,Rpc可实现超过180,Rz≤3.0um,Rq≤0.5um。
优选的,所述锡铁合金层≥1.2g/m2,氧化锡≤1.5mC/cm2,钝化膜4~8mg/m2。
一种高锡量气雾阀门用镀锡铁制造方法,包括以下步骤;
S1、将钢水经炼钢连铸后得到连铸坯;所述钢水的成分与所述气雾阀门用镀锡板的成分相同。浇铸中包液面波动控制±1mm,拉速控制1.0—1.3m/min。
S2、将S1中得到的连铸坯进行热轧,所述热轧的加热温度为1150℃~1250℃,粗轧出口温度为1050℃~1110℃,终轧温度为860℃~890℃,卷取温度为580℃~620℃,得到热轧卷;
S3、热轧卷酸洗后进行冷轧,得到冷轧薄板,所述冷轧的压下率为80%~90%,厚度波动±0.003mm;
S4、将S4中得到的冷轧薄板进表面脱脂和罩式退火,得到罩退后的冷轧薄板,所述罩式退火的保温温度为600℃~660℃,保温时间为13h,升温速率20-40℃/h;
S5、将S5中得到的退火后的冷轧薄板进行平整处理,得到平整后的薄板,所述平整处理的压下率为2%~4%,采用工作辊表面粗糙度1.0~1.5um;
S6、将S6中得到的平整后的薄板进行镀锡工序,得到气雾罐阀门用镀锡板;所述镀锡工序的镀锡量为5.6~8.4g/m2,锡铁合金层≥1.2g/m2。
本发明提供了一种高锡量气雾阀门用镀锡铁及其制造方法。具备以下有益效果:
本发明通过全流程工艺设计,包括炼钢成份、浇铸、热轧工艺参数控制,冷轧退火工艺参数控制、平整及镀锡工艺参数控制,所得一种高锡量阀门用镀锡板,具备较低的夹杂物水平,较好的性能均匀性以及优良的锡层附着力,满足气雾阀门成型及使用的要求,所得镀锡板的夹杂物B类+D类+Ds类夹杂物等级之和≤1级,所得镀锡板整卷测量头、中、尾部边中边共计9个位置,均可以实现0°、45°及90°方向上塑性应变比r值大于1.0,各项异性Δr<0.5,屈服强度250-300Mpa,延伸率≥35%。采用弯曲及划圈法试验观察镀锡板表面无剥落或分离现象。
附图说明
图1气雾阀门用镀锡板夹杂物检测图;
图2气雾阀门用镀锡板光扫描表面形貌图;
图3气雾阀门用镀锡板划圈法检测附着力结果图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例1:
请参阅附图1-附图3,本发明实施例提供一种高锡量气雾阀门用镀锡铁,包括化学成分质量百分比为:C:0.04%,Mn:0.5%,Als:0.035%,Si:0.015%,P:0.012%,S:0.009%,N:0.0038%,余量为铁和不可避免的杂质。
镀锡板厚度范围0.28mm。
镀锡板夹杂物水平:B类+D类+Ds类夹杂物等级之和0.5级。
本实施例中高锡量气雾阀门用镀锡板,其制造过程包括:
S1、将钢水经炼钢连铸后得到连铸坯;钢水的成分与气雾阀门用镀锡板的成分相同。浇铸中间包液面波动曲线最大0.8mm,结晶器拉速控制1.2m/min。
S2、将S1中得到的铸坯进行热轧,热轧地加热温度为1180℃,粗轧出口温度为1080℃,终轧温度为890℃,卷取温度为600℃,得到热轧卷;
S3、热轧卷酸洗后进行冷轧,得到冷轧薄板,冷轧的压下率为88.8%,厚度波动±0.003mm;
S4、将S4中得到的冷轧薄板进表面脱脂和罩式退火,得到罩退后的冷轧薄板,罩式退火的保温温度为620℃,保温时间为13h,升温速率25℃/h;
S5、将S5中得到的退火后的冷轧薄板进行平整处理,得到平整后的薄板,平整处理的压下率为2%,采用工作辊表面粗糙度1.25um,电火花毛化采用正极+负极+正极三遍毛化的方式,去除尖峰,同时增加峰值密度;
S6、将S6中得到的平整后的薄板进行镀锡工序,得到气雾罐阀门用镀锡板;镀锡工序的镀锡量为5.62g/m2,软熔线距淬水水面距离控制70cm,软熔温度控制280℃。
实施例2:
请参阅附图1-附图3,本发明实施例提供一种高锡量气雾阀门用镀锡铁,化学成分质量百分比为:C:0.05%,Mn:0.46%,Als:0.045%,Si:0.015%,P:0.012%,S:0.01%,N:0.0042%,余量为铁和不可避免的杂质。
镀锡板厚度范围0.29mm。
镀锡板夹杂物水平:B类+D类+Ds类夹杂物等级之和1级。
本实施例中高锡量气雾阀门用镀锡板,其制造过程包括:
S1、将钢水经炼钢连铸后得到连铸坯;钢水的成分与气雾阀门用镀锡板的成分相同。浇铸中间包液面波动曲线最大1mm,结晶器拉速控制1.2m/min。
S2、将S1中得到的铸坯进行热轧,热轧地加热温度为1180℃,粗轧出口温度为1080℃,终轧温度为890℃,卷取温度为620℃,得到热轧卷;
S3、热轧卷酸洗后进行冷轧,得到冷轧薄板,冷轧的压下率为88.1%,厚度波动±0.003mm;
S4、将S4中得到的冷轧薄板进表面脱脂和罩式退火,得到罩退后的冷轧薄板,罩式退火的保温温度为600℃,保温时间为13h,升温速率25℃/h;
S5、将S5中得到的退火后的冷轧薄板进行平整处理,得到平整后的薄板,平整处理的压下率为2.5%,采用工作辊表面粗糙度1.3um,电火花毛化采用正极+负极+正极三遍毛化的方式,去除尖峰,同时增加峰值密度;
S6、将S6中得到的平整后的薄板进行镀锡工序,得到气雾罐阀门用镀锡板;镀锡工序的镀锡量为5.54g/m2,软熔线距淬水水面距离控制76cm,软熔温度控制280℃。
实施例3:
请参阅附图1-附图3,本发明实施例提供一种高锡量气雾阀门用镀锡铁,化学成分质量百分比为:C:0.055%,Mn:0.52%,Als:0.048%,Si:0.08%,P:0.013%,S:0.009%,N:0.0035%,余量为铁和不可避免的杂质。
镀锡板厚度范围0.25mm。
镀锡板夹杂物水平:B类+D类+Ds类夹杂物等级之和0.5级。
本实施例中高锡量气雾阀门用镀锡板,其制造过程包括:
S1、将钢水经炼钢连铸后得到连铸坯;钢水的成分与气雾阀门用镀锡板的成分相同。浇铸中间包液面波动曲线最大1mm,结晶器拉速控制1.2m/min。
S2、将S1中得到的铸坯进行热轧,热轧地加热温度为1180℃,粗轧出口温度为1095℃,终轧温度为880℃,卷取温度为600℃,得到热轧卷;
S3、热轧卷酸洗后进行冷轧,得到冷轧薄板,冷轧的压下率为90%,厚度波动±0.003mm;
S4、将S4中得到的冷轧薄板进表面脱脂和罩式退火,得到罩退后的冷轧薄板,罩式退火的保温温度为580℃,保温时间为13h,升温速率30℃/h;
S5、将S5中得到的退火后的冷轧薄板进行平整处理,得到平整后的薄板,平整处理的压下率为3%,采用工作辊表面粗糙度1.15um,电火花毛化采用正极+负极+正极三遍毛化的方式,去除尖峰,同时增加峰值密度;
S6、将S6中得到的平整后的薄板进行镀锡工序,得到气雾罐阀门用镀锡板;镀锡工序的镀锡量为8.4g/m2,软熔线距淬水水面距离控制65cm,软熔温度控制280℃。
实施例4:
请参阅附图1-附图3,本发明实施例提供一种高锡量气雾阀门用镀锡铁,。
化学成分质量百分比为:C:0.058%,Mn:0.52%,Als:0.05%,Si:0.012%,P:0.01%,S:0.007%,N:0.0035%,余量为铁和不可避免的杂质。
镀锡板厚度范围0.3mm。
镀锡板夹杂物水平:B类+D类+Ds类夹杂物等级之和0.5级。
本实施例中高锡量气雾阀门用镀锡板,其制造过程包括:
S1、将钢水经炼钢连铸后得到连铸坯;钢水的成分与气雾阀门用镀锡板的成分相同。浇铸中间包液面波动曲线最大1mm,结晶器拉速控制1.2m/min。
S2、将S1中得到的铸坯进行热轧,热轧地加热温度为1180℃,粗轧出口温度为1080℃,终轧温度为890℃,卷取温度为620℃,得到热轧卷;
S3、热轧卷酸洗后进行冷轧,得到冷轧薄板,冷轧的压下率为88%,厚度波动±0.003mm;
S4、将S4中得到的冷轧薄板进表面脱脂和罩式退火,得到罩退后的冷轧薄板,罩式退火的保温温度为580℃,保温时间为13h,升温速率35℃/h;
S5、将S5中得到的退火后的冷轧薄板进行平整处理,得到平整后的薄板,平整处理的压下率为4%,采用工作辊表面粗糙度1.5um,电火花毛化采用正极+负极+正极三遍毛化的方式,去除尖峰,同时增加峰值密度;
S6、将S6中得到的平整后的薄板进行镀锡工序,得到气雾罐阀门用镀锡板;镀锡工序的镀锡量为8.4g/m2,软熔线距淬水水面距离控制60cm,软熔温度控制260℃。
对比例1;
本实施例中高锡量气雾阀门用镀锡板,化学成分质量百分比为:C:0.04%,Mn:0.5%,Als:0.035%,Si:0.015%,P:0.012%,S:0.009%,N:0.0038%,余量为铁和不可避免的杂质。
镀锡板厚度范围0.25mm。
镀锡板夹杂物水平:B类+D类+Ds类夹杂物等级之和0.5级。
本实施例中高锡量气雾阀门用镀锡板,其制造过程包括:
S1、将钢水经炼钢连铸后得到连铸坯;钢水的成分与气雾阀门用镀锡板的成分相同。浇铸中间包液面波动曲线最大0.8mm,结晶器拉速控制1.25m/min。
S2、将S1中得到的铸坯进行热轧,热轧地加热温度为1180℃,粗轧出口温度为1080℃,终轧温度为890℃,卷取温度为600℃,得到热轧卷;
S3、热轧卷酸洗后进行冷轧,得到冷轧薄板,冷轧的压下率为91.6%,厚度波动±0.003mm;
S4、将S4中得到的冷轧薄板进表面脱脂和罩式退火,得到罩退后的冷轧薄板,罩式退火的保温温度为620℃,保温时间为13h,升温速率25℃/h;
S5、将S5中得到的退火后的冷轧薄板进行平整处理,得到平整后的薄板,平整处理的压下率为2%,采用工作辊表面粗糙度1.25um,电火花毛化采用正极+负极+正极三遍毛化的方式,去除尖峰,同时增加峰值密度;
S6、将S6中得到的平整后的薄板进行镀锡工序,得到气雾罐阀门用镀锡板;镀锡工序的镀锡量为5.62g/m2,软熔线距淬水水面距离控制70cm,软熔温度控制280℃。
对比例2;
本实施例中高锡量气雾阀门用镀锡板,化学成分质量百分比为:C:0.05%,Mn:0.46%,Als:0.045%,Si:0.015%,P:0.012%,S:0.01%,N:0.0042%,余量为铁和不可避免的杂质。
镀锡板厚度范围0.29mm。
镀锡板夹杂物水平:B类+D类+Ds类夹杂物等级之和0.5级。
本实施例中高锡量气雾阀门用镀锡板,其制造过程包括:
S1、将钢水经炼钢连铸后得到连铸坯;钢水的成分与气雾阀门用镀锡板的成分相同。浇铸中间包液面波动曲线最大1mm,结晶器拉速控制1.2m/min。
S2、将S1中得到的铸坯进行热轧,热轧地加热温度为1180℃,粗轧出口温度为1080℃,终轧温度为890℃,卷取温度为600℃,得到热轧卷;
S3、热轧卷酸洗后进行冷轧,得到冷轧薄板,冷轧的压下率为88%,厚度波动±0.003mm;
S4、将S4中得到的冷轧薄板进表面脱脂和罩式退火,得到罩退后的冷轧薄板,罩式退火的保温温度为620℃,保温时间为13h,升温速率25℃/h;
S5、将S5中得到的退火后的冷轧薄板进行平整处理,得到平整后的薄板,平整处理的压下率为2%,采用工作辊表面粗糙度1.25um,电火花毛化采用正极+负极+正极三遍毛化的方式,去除尖峰,同时增加峰值密度;
S6、将S6中得到的平整后的薄板进行镀锡工序,得到气雾罐阀门用镀锡板;镀锡工序的镀锡量为5.76g/m2,软熔线距淬水水面距离控制85cm,软熔温度控制340℃。
图1为镀锡板的夹杂物低倍检测图,可以看出,视图中仅有尺寸较小的B类氧化铝夹杂,且等级小于1级。因此种成份的铝脱氧钢硫含量及Si含量均很低,不存在A类硫化物和C类硅酸盐类夹杂物。图2为镀锡板光扫描表面形貌图,可以看出,整个表面较为均匀,其波峰和波谷分布均衡,可最大限度降低因表面高点而导致的锡层脱落。
图3为镀锡板划格法附着力试验图,经3M胶带粘附10s撕下后,表面无明显的剥落痕迹,附着力较好。
表1实施例与对比例性能及表面参数对比
表2实施例与对比例过程工艺参数对比
表1为上述制造方法的四种实施例和两种对比例的镀锡板的性能、表面形貌对比。表2为上述制造方法的四种实施例和两种对比例的制造过程工艺参数的对比。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。
Claims (3)
1.一种高锡量气雾阀门用镀锡铁,其特征在于,包括以下的化学成分质量百分比为:C:0.04%~0.07%,Mn:0.45%~0.55%,Si:≤0.03%,P%≤0.015%,S%≤0.02%,余量为铁和不可避免的杂质;
所述镀锡铁的夹杂物水平:B类+D类+Ds类夹杂物等级之和≤1级。
所述镀锡铁的拉深成型指标:0°、45°及90°方向上塑性应变比r值均大于1.0,其各项异性Δr<0.5,屈服强度250-300Mpa,延伸率≥35%。
所述镀锡铁的表面形貌:Ra达到0.3-0.6um,Rpc可实现超过180,Rz≤3.0um,Rq≤0.5um。
2.根据权利要求1所述的一种高锡量气雾阀门用镀锡铁,其特征在于,所述锡铁合金层≥1.2g/m2,氧化锡≤1.5mC/cm2,钝化膜4~8mg/m2。
3.一种高锡量气雾阀门用镀锡铁制造方法,使用权利要求1-2中任意一项所述的一种高锡量气雾阀门用镀锡铁,其特征在于,包括以下步骤;
S1、将钢水经炼钢连铸后得到连铸坯;所述钢水的成分与所述气雾阀门用镀锡板的成分相同。浇铸中包液面波动控制±1mm,拉速控制1.0—1.3m/min。
S2、将S1中得到的连铸坯进行热轧,所述热轧的加热温度为1150℃~1250℃,粗轧出口温度为1050℃~1110℃,终轧温度为860℃~890℃,卷取温度为580℃~620℃,得到热轧卷;
S3、热轧卷酸洗后进行冷轧,得到冷轧薄板,所述冷轧的压下率为80%~90%,厚度波动±0.003mm;
S4、将S4中得到的冷轧薄板进表面脱脂和罩式退火,得到罩退后的冷轧薄板,所述罩式退火的保温温度为600℃~660℃,保温时间为13h,升温速率20-40℃/h;
S5、将S5中得到的退火后的冷轧薄板进行平整处理,得到平整后的薄板,所述平整处理的压下率为2%~4%,采用工作辊表面粗糙度1.0~1.5um;
S6、将S6中得到的平整后的薄板进行镀锡工序,得到气雾罐阀门用镀锡板;所述镀锡工序的镀锡量为5.6~8.4g/m2,锡铁合金层≥1.2g/m2。
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