CN113699456A - 一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺 - Google Patents
一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺 Download PDFInfo
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- 238000005096 rolling process Methods 0.000 title claims abstract description 81
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 229910000963 austenitic stainless steel Inorganic materials 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 83
- 239000002253 acid Substances 0.000 claims abstract description 26
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 20
- 239000010935 stainless steel Substances 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000000137 annealing Methods 0.000 claims abstract description 10
- 238000005422 blasting Methods 0.000 claims abstract description 10
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000011574 phosphorus Substances 0.000 claims abstract description 6
- 238000005406 washing Methods 0.000 claims abstract description 6
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 51
- 239000010959 steel Substances 0.000 claims description 51
- 230000009467 reduction Effects 0.000 claims description 25
- 238000004140 cleaning Methods 0.000 claims description 24
- 238000005554 pickling Methods 0.000 claims description 18
- 230000007246 mechanism Effects 0.000 claims description 16
- 238000001035 drying Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 229910021645 metal ion Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000007790 scraping Methods 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
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- 230000002441 reversible effect Effects 0.000 description 1
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Abstract
本发明公开了一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,254SMo不锈钢化学成分重量百分比为:C≤0.02%,Mn≤1%,Ni≤18.5%,Mo≤6.5%,Si≤0.8%,Cr≤20.5%,N≤0.22%,Cu≤1.0%,P≤0.03%,S≤0.01%,余量为Fe和不可避免的杂质;其工艺步骤如下:1)预热:取上述组分原材料板坯,厚度为220‑240mm,放入到加热炉中进行预热;2)加热:预热完毕后进入加热段;3)粗轧:钢坯在加热炉内加热完毕后,经转运装置转运到传输辊上,并关闭炉后除磷装置;4)精轧;5)卷取;6)开卷焊接;7)退火;8)破鳞抛丸;9)酸洗。本发明具有能耗低、生产效率高、批次稳定、成材率高以及尺寸精度高等优点。
Description
技术领域
本发明属于不锈钢生产技术领域,特别涉及一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺。
背景技术
254SMo超级奥氏体不锈钢,具有较高的强度、良好的韧性、优越的耐腐蚀性和一定的成形性。它化学成分中的高的铬、镍、钼含量和超低的碳含量极大地提高了奥氏体组织的稳定性和耐腐蚀性。
254SMo相对于普通的奥氏体不锈钢而言,其热塑性温度区间窄、热塑性差、变形抗力大,在实际生产中变形存在一定难度,254SMo超级奥氏体不锈钢在实际生产中鲜有在热连轧线;常见的254SMo热轧板加工形式为单机架可逆轧机轧制(片式轧制),能耗高,生产效率低,并且批次不稳定,差异化较大。
发明内容
本发明的目的是克服现有技术中不足,提供一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,具有能耗低、生产效率高、批次稳定、成材率高以及尺寸精度高等优点。
为了实现上述目的,本发明采用的技术方案是:
一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,254SMo不锈钢化学成分重量百分比为:C≤0.02%,Mn≤1%,Ni≤18.5%,Mo≤6.5%,Si≤0.8%,Cr≤20.5%,N≤0.22%,Cu≤1.0%,P≤0.03%,S≤0.01%,余量为Fe和不可避免的杂质;
其工艺步骤如下:
1)预热:取上述组分原材料板坯,厚度为220-240mm,放入到加热炉中进行预热,调整预热温度为720-750℃,加热时间控制在70-75min;
2)加热:预热完毕后进行加热一段,调整加热温度到1140-1160℃,加热时间控制在40-45min;加热一段结束后进入加热二段,调整加热温度到1280-1300℃,加热时间控制在55-65min;加热二段结束后进入均热段,调整加热温度到1290-1310℃,加热时间控制在25-30min;总在炉时间控制在190-215min;
3)粗轧:钢坯在加热炉内加热完毕后,经转运装置转运到传输辊上,并关闭炉后除磷装置,经传输辊运送到粗轧机进行粗轧;粗轧采用5道次轧制,一道次压下率为20.5-22.3%;二道次压下率为22.5-25.7%;三道次压下率为26.7-28.5%;四道次压下率为23.1-24.5%;五道次压下率为22.1-23.6%;无需投用热卷箱,粗轧出口温度为1230±20℃;粗轧后中间坯厚度为25~28mm;粗轧后除鳞不投用;
4)精轧:通过传输辊将粗轧后的不锈钢送入精轧装置中,并且控制精轧开扎温度为1200±10℃,精轧结束温度为1080±30℃;精轧后除鳞不投用;
5)卷取:精轧后的不锈钢钢带经过传输辊运输到卷取机构进行卷取;
6)开卷焊接:通过焊接装置将两组钢卷进行焊接固定,使后续处理装置能够不间断的对钢带进行处理,提高工作效率;
7)退火:通过退火装置对钢带进行退火冷却处理;
8)破鳞抛丸:通过破鳞装置与抛丸装置对退火冷却后的钢带进行拉矫除鳞和抛丸操作;
9)酸洗:钢带通过酸洗机构对表面形成的氧化皮进行酸洗处理;酸洗工艺设有混酸一段,混酸二段;混酸一段HNO3浓度为75±5g/L,HF浓度为35±5g/L,金属离子<40g/L,温度50±5℃;混酸二段HNO3浓度为65±5g/L,HF浓度为30±5g/L,金属离子<35g/L,温度50±5℃;
所述酸洗机构包括上端盖、箱体、钢带、清洁装置、运动辊Ⅰ、下压辊、搅拌混合装置、支撑辊、清洁毛刷Ⅰ、运动辊Ⅱ、凸型接口、凹型接口、换热管、调节装置,所述箱体上方设有上端盖,箱体自凹型接口至凸型接口依次设有清洁装置、运动辊Ⅰ、下压辊、支撑辊、清洁毛刷Ⅰ、运动辊Ⅱ,下压辊下方设有搅拌混合装置,箱体底部设有换热管;
所述清洁装置包括固定梁、V型刮板、活动杆、侧刮板、下刮板、收集箱、活动门、导轨,固定梁两端固定安装在箱体内部,固定梁下方通过调节装置连接V型刮板,V型刮板两侧活动安装有活动杆,活动杆另一端通过螺栓连接有侧刮板,V型刮板下方设有下刮板,下刮板固定安装在箱体内部,下刮板下方设有收集箱,收集箱固定安装在箱体内部,收集箱较低一侧设有活动门,活动门外侧设有导轨,导轨固定安装在箱体上,下刮板与V型刮板之间距离可以通过调节装置进行调整;
当钢带在凹型接口处进入箱体内部,通过清洁装置中V型刮板与下刮板之间的配合,将钢带表面易脱落的氧化铁皮刮掉清除,侧刮板对钢带两侧进行清理,使钢带表面漏出深层次的氧化铁皮,便于酸洗。
10)烘干:通过清洗机构高压水流将残留在钢带表面的酸洗溶液进行清理,然后通过烘干装置将钢带进行烘干,随后通过卷取机构进行卷取,钢卷达到一定要求后进行切断打捆。
优选的,254SMo不锈钢化学成分重量百分比中Ni≥17.5%,Mo≥6.0%,Cr≥19.5%,N≥0.18%,Cu≥0.5%。
本发明与现有技术相比较有益效果表现在:
1)通过增加一段时间的预热,使加热炉内温度缓慢上升,能够避免因突然升温导致各组成成分不稳定的问题,能够提升钢坯质量,并且控制总加热时间在230-255min之间,能够在保证钢坯质量的同时减少能源的消耗,降低生产成本;
2)通过增加清洁装置,V型刮板与下刮板的相互配合,清理钢带表面易于脱落的氧化铁皮,通过侧刮板可以对钢带两侧进行清理,使钢带在酸洗过程中能够使深层次的氧化铁皮与混合酸溶液充分反应,使酸洗的更彻底,并且能够节约混酸溶液。
附图说明
附图1是本发明一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺结构示意图;
附图2是酸洗机构内部结构示意图;
附图3是清洁装置结构示意图;
附图4是附图2中A处局部放大图;
图中:10、上端盖;11、箱体;12、钢带;13、清洁装置;14、运动辊Ⅰ;15、下压辊;16、搅拌混合装置;17、支撑辊;18、清洁毛刷Ⅰ;19、运动辊Ⅱ;20、凸型接口;21、凹型接口;22、换热管;23、调节装置;131、固定梁;132、V型刮板;133、活动杆;134、侧刮板;135、下刮板;136、收集箱;137、活动门;138、导轨。
具体实施方式
为方便本技术领域人员的理解,下面结合实施例1-3和附图1-4,对本发明的技术方案进一步具体说明。
实施例1:
一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,254SMo不锈钢化学成分重量百分比为:C=0.01%,Mn=0.55%,Ni=17.61%,Mo=6.26%,Si=0.33%,Cr=20.02%,N=0.205%,Cu=0.65%,P=0.02%,S=0.001%,余量为Fe和不可避免的杂质;
其工艺步骤如下:
1)预热:取上述组分原材料板坯,厚度为220-240mm,放入到加热炉中进行预热,调整预热温度为740℃,加热时间控制在70min;
2)加热:预热完毕后进行加热一段,调整加热温度到1150℃,加热时间控制在40min;加热一段结束后进入加热二段,调整加热温度到1290℃,加热时间控制在55min;加热二段结束后进入均热段,调整加热温度到1300℃,加热时间控制在25min;总在炉时间控制在190min;
3)粗轧:钢坯在加热炉内加热完毕后,经转运装置转运到传输辊上,并关闭炉后除磷装置,经传输辊运送到粗轧机进行粗轧;粗轧采用5道次轧制,一道次压下率为20.19%;二道次压下率为22.67%;三道次压下率为27.36%;四道次压下率为23.36%;五道次压下率为23.1%;无需投用热卷箱,粗轧出口温度为1230℃;粗轧后中间坯厚度为26mm;粗轧后除鳞不投用;
4)精轧:通过传输辊将粗轧后的不锈钢送入精轧装置中,并且控制精轧开扎温度为1200℃,精轧结束温度为1090℃;精轧后除鳞不投用;
5)卷取:精轧后的不锈钢钢带经过传输辊运输到卷取机构进行卷取;
6)开卷焊接:通过焊接装置将两组钢卷进行焊接固定,使后续处理装置能够不间断的对钢带进行处理,提高工作效率;
7)退火:通过退火装置对钢带进行退火冷却处理;
8)破鳞抛丸:通过破鳞装置与抛丸装置对退火冷却后的钢带进行拉矫除鳞和抛丸操作;
9)酸洗:钢带通过酸洗机构对表面形成的氧化皮进行酸洗处理;酸洗工艺设有混酸一段,混酸二段;混酸一段HNO3浓度为75±5g/L,HF浓度为35±5g/L,金属离子<40g/L,温度50±5℃;混酸二段HNO3浓度为65±5g/L,HF浓度为30±5g/L,金属离子<35g/L,温度50±5℃;
所述酸洗机构包括上端盖10、箱体11、钢带12、清洁装置13、运动辊Ⅰ14、下压辊15、搅拌混合装置16、支撑辊17、清洁毛刷Ⅰ18、运动辊Ⅱ19、凸型接口20、凹型接口21、换热管22、调节装置23,所述箱体11上方设有上端盖10,箱体11自凹型接口21至凸型接口20依次设有清洁装置13、运动辊Ⅰ14、下压辊15、支撑辊17、清洁毛刷Ⅰ18、运动辊Ⅱ19,下压辊15下方设有搅拌混合装置16,箱体11底部设有换热管22;
所述清洁装置13包括固定梁131、V型刮板132、活动杆133、侧刮板134、下刮板135、收集箱136、活动门137、导轨138,固定梁131两端固定安装在箱体11内部,固定梁131下方通过调节装置23连接V型刮板132,V型刮板132两侧活动安装有活动杆133,活动杆133另一端通过螺栓连接有侧刮板134,V型刮板132下方设有下刮板135,下刮板135固定安装在箱体11内部,下刮板135下方设有收集箱136,收集箱136固定安装在箱体11内部,收集箱136较低一侧设有活动门137,活动门137外侧设有导轨138,导轨138固定安装在箱体11上,下刮板135与V型刮板132之间距离可以通过调节装置23进行调整;
当钢带12在凹型接口21处进入箱体11内部,通过清洁装置13中V型刮板132与下刮板135之间的配合,将钢带12表面易脱落的氧化铁皮刮掉清除,侧刮板134对钢带12两侧进行清理,使钢带12表面漏出深层次的氧化铁皮,便于酸洗。
10)烘干:通过清洗机构高压水流将残留在钢带表面的酸洗溶液进行清理,然后通过烘干装置将钢带进行烘干,随后通过卷取机构进行卷取,钢卷达到一定要求后进行切断打捆;
依据GB427-2015,实施例1所得不锈钢板卷所得力学性能实验数据:抗拉强度为760MPa,屈服强度410MPa,伸长率45%。
实施例2:
与实施例1相比较所不同的是,一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,不锈钢化学成分重量百分比为:C=0.016%,Ni=17.92%,Mo=6.41%,其余不变;
步骤1)预热:取上述组分原材料板坯,厚度为220-240mm,放入到加热炉中进行预热,调整预热温度为720-750℃,加热时间控制在72min;
步骤2)加热:预热完毕后进行加热一段,调整加热温度到1140-1160℃,加热时间控制在42min;加热一段结束后进入加热二段,调整加热温度到1280-1300℃,加热时间控制在55min;加热二段结束后进入均热段,调整加热温度到1290-1310℃,加热时间控制在25min;总在炉时间控制在194min。
步骤3)粗轧:钢坯在加热炉内加热完毕后,经转运装置转运到传输辊上,并关闭炉后除磷装置,经传输辊运送到粗轧机进行粗轧;粗轧采用5道次轧制,一道次压下率为20.24%;二道次压下率为23.88%;三道次压下率为27.57%;四道次压下率为23.90%;五道次压下率为22.83%;无需投用热卷箱,粗轧出口温度为1225℃;粗轧后中间坯厚度为27mm;粗轧后除鳞不投用;
步骤4)精轧:通过传输辊将粗轧后的不锈钢送入精轧装置中,并且控制精轧开扎温度为1195℃,精轧结束温度为1060℃;精轧后除鳞不投用;
依据GB427-2015,实施例2所得不锈钢板卷所得力学性能实验数据:抗拉强度为775MPa,屈服强度420MPa,伸长率48%。
实施例3:
与实施例1相比较所不通过的是,一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,不锈钢化学成分重量百分比为:C=0.007%,Ni=17.52%,Mo=6.13%,其余不变;
步骤1)预热:取上述组分原材料板坯,厚度为220-240mm,放入到加热炉中进行预热,调整预热温度为735℃,加热时间控制在75min;
步骤2)加热:预热完毕后进行加热一段,调整加热温度到1140℃,加热时间控制在40min;加热一段结束后进入加热二段,调整加热温度到1285℃,加热时间控制在55min;加热二段结束后进入均热段,调整加热温度到1295℃,加热时间控制在25min;总在炉时间控制在195min。
步骤3)粗轧:钢坯在加热炉内加热完毕后,经转运装置转运到传输辊上,并关闭炉后除磷装置,经传输辊运送到粗轧机进行粗轧;粗轧采用5道次轧制,一道次压下率为20.52%;二道次压下率为23.68%;三道次压下率为27.21%;四道次压下率为24.43%;五道次压下率为22.76%;无需投用热卷箱,粗轧出口温度为1245℃;粗轧后中间坯厚度为25mm;粗轧后除鳞不投用;
步骤4)精轧:通过传输辊将粗轧后的不锈钢送入精轧装置中并且控制精轧开扎温度为1210℃,精轧结束温度为1105℃;精轧后除鳞不投用;
依据GB427-2015,实施例3所得不锈钢板卷所得力学性能实验数据:抗拉强度为745MPa,屈服强度400MPa,伸长率42%。
依据GBT4237-2015判断,以上各项实施例所得实验结果均为合格状态。
以上内容仅仅是对本发明的结构所作的举例和说明,所属本技术领域的技术人员对所描述的具体实施例做各种各样的修改或补充或采用类似的方式替代,只要不偏离发明的结构或者超越本权利要求书所定义的范围,均应属于本发明的保护范围。
Claims (8)
1.一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,其特征在于254SMo不锈钢化学成分重量百分比为:C≤0.02%,Mn≤1%,Ni≤18.5%,Mo≤6.5%,Si≤0.8%,Cr≤20.5%,N≤0.22%,Cu≤1.0%,P≤0.03%,S≤0.01%,余量为Fe和不可避免的杂质;
其工艺步骤如下:
1)预热:取上述组分原材料板坯,厚度为220-240mm,放入到加热炉中进行预热;
2)加热:预热完毕后进入加热段;
3)粗轧:钢坯在加热炉内加热完毕后,经转运装置转运到传输辊上,并关闭炉后除磷装置,经传输辊运送到粗轧机进行粗轧;
4)精轧:通过传输辊将粗轧后的不锈钢送入精轧装置中,精轧采用升速轧制,投用压力AGC,精轧后除鳞不投用;
5)卷取:精轧后的不锈钢钢带经过传输辊运输到卷取机构进行卷取;
6)开卷焊接:通过焊接装置将两组钢卷进行焊接固定;
7)退火:通过退火装置对钢带进行退火冷却处理;
8)破鳞抛丸:通过破鳞装置与抛丸装置对退火冷却后的钢带进行拉矫除鳞和抛丸操作;
9)酸洗:钢带通过酸洗机构对表面形成的氧化皮进行酸洗处理;
10)烘干:通过清洗机构高压水流将残留在钢带表面的酸洗溶液进行清理,然后通过烘干装置将钢带进行烘干,随后通过卷取机构进行卷取。
2.根据权利要求1所述的一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,其特征在于预热段,调整预热温度为720-750℃,加热时间控制在70-75min。
3.根据权利要求1所述的一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,其特征在于加热段,预热完毕后进行加热一段,调整加热温度到1140-1160℃,加热时间控制在40-45min;加热一段结束后进入加热二段,调整加热温度到1280-1300℃,加热时间控制在55-65min;加热二段结束后进入均热段,调整加热温度到1290-1310℃,加热时间控制在25-30min;总在炉时间控制在190-215min。
4.根据权利要求1所述的一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,其特征在于粗轧采用5道次轧制,一道次压下率为20.5-22.3%;二道次压下率为22.5-25.7%;三道次压下率为26.7-28.5%;四道次压下率为23.1-24.5%;五道次压下率为22.1-23.6%;无需投用热卷箱,粗轧出口温度为1230±20℃;粗轧后中间坯厚度为25~28mm;粗轧后除鳞不投用。
5.根据权利要求1所述的一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,其特征在于精轧开扎温度为1200±10℃,精轧结束温度为1080±30℃。
6.根据权利要求1所述的一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,其特征在于酸洗工艺设有混酸一段,混酸二段;混酸一段HNO3浓度为75±5g/L,HF浓度为35±5g/L,金属离子<40g/L,温度50±5℃;混酸二段HNO3浓度为65±5g/L,HF浓度为30±5g/L,金属离子<35g/L,温度50±5℃。
7.根据权利要求1所述的一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,其特征在于所述酸洗机构包括上端盖、箱体、钢带、清洁装置、运动辊Ⅰ、下压辊、搅拌混合装置、支撑辊、清洁毛刷Ⅰ、运动辊Ⅱ、凸型接口、凹型接口、换热管、调节装置,所述箱体上方设有上端盖,箱体自凹型接口至凸型接口依次设有清洁装置、运动辊Ⅰ、下压辊、支撑辊、清洁毛刷Ⅰ、运动辊Ⅱ,下压辊下方设有搅拌混合装置,箱体底部设有换热管;
所述清洁装置包括固定梁、V型刮板、活动杆、侧刮板、下刮板、收集箱、活动门、导轨,固定梁两端固定安装在箱体内部,固定梁下方通过调节装置连接V型刮板,V型刮板两侧活动安装有活动杆,活动杆另一端通过螺栓连接有侧刮板,V型刮板下方设有下刮板,下刮板固定安装在箱体内部,下刮板下方设有收集箱,收集箱固定安装在箱体内部,收集箱较低一侧设有活动门,活动门外侧设有导轨,导轨固定安装在箱体上。
8.根据权利要求1所述的一种254SMo超级奥氏体不锈钢热连轧板卷及其生产工艺,其特征在于254SMo不锈钢化学成分重量百分比中Ni≥17.5%,Mo≥6.0%,Cr≥19.5%,N≥0.18%,Cu≥0.5%。
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