CN106676389A - 一种输油管用高强度耐腐蚀钢及其加工工艺 - Google Patents
一种输油管用高强度耐腐蚀钢及其加工工艺 Download PDFInfo
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Abstract
本发明公开了一种输油管用高强度耐腐蚀钢,其特征在于,所述钢板按重量百分比计成分为:C:0.53‑0.67%,Si:0.15‑0.21%,Mn:0.63‑0.68%,V:0.05‑0.12%,Co:0.002‑0.004%,Cr:0.25‑0.31%,S:0.001‑0.002%,Al:0.065‑0.067%,N:0.002‑0.003%,Mo:0.13‑0.26%,Ca:0.001‑0.002%,Cu:0.02‑0.04%,Nb:0.026‑0.031%,Ni:0.26‑0.35%,W:0.08‑0.12%,Mg:0.001‑0.0015%,Ag:0.001‑0.002%,Ti:0.003‑0.007%,其余为Fe和不可避免杂质,钢板表面设有一层耐腐蚀涂层;本发明高强度、耐腐蚀耐高温,使用寿命长。
Description
技术领域
本发明属于液压设备技术领域,特别是一种输油管用高强度耐腐蚀钢及其加工工艺。
背景技术
液压站的主要工作零部件之一就是输油管,输油管材一般为钢管,使用焊接和法兰等连接装置连接,并使用阀门进行开闭控制和流量调节;输油管的密封性、耐腐蚀性以及其耐高温性能,决定了液压站的工作效率和使用寿命。
发明内容
本发明所要解决的技术问题是,克服现有技术的缺点,提供一种输油管用高强度耐腐蚀钢,具有高强度、耐腐蚀耐高温,使用寿命长。
为了解决以上技术问题,本发明提供一种输油管用高强度耐腐蚀钢,其特征在于,所述钢板按重量百分比计成分为:C:0.53-0.67%, Si:0.15-0.21%,Mn:0.63-0.68%,V:0.05-0.12%,Co:0.002-0.004%,Cr:0.25-0.31%,S:0.001-0.002%, Al:0.065-0.067%,N:0.002-0.003%,Mo:0.13-0.26%,Ca:0.001-0.002%,Cu:0.02-0.04%,Nb:0.026-0.031%,Ni:0.26-0.35%,W:0.08-0.12%,Mg:0.001-0.0015%,Ag:0.001-0.002%,Ti:0.003-0.007%,其余为Fe和不可避免杂质;
所述钢板表面设有一层耐腐蚀涂层,按质量份数计包括以下组分:有机硅树脂30-40份、碳化硅微粉10-15份、陶瓷微珠12-14份、氮化硼5-8份、细晶氧化铝7-9份、超细氧化锌6-8份、纳米二氧化钛8-12份、纳米二氧化硅11-16份、聚四氟乙烯10-12份、碳纤维粉5-7份、消泡剂3-4份、固化剂3-5份、粘接剂2-4份、去离子水30-40份。
本发明进一步限定方案:
前述的钢板按重量百分比计成分为:C:0.58%, Si:0.16%,Mn:0.63%,V:0.08%,Co:0.002%,Cr:0.28%,S:0.001%,Al:0.065%,N:0.002%,Mo:0.17%,Ca:0.001%,Cu:0.02%,Nb:0.026%,Ni: 0.28%,W:0.08%,Mg:0.001%,Ag:0.001%,Ti:0.003%,其余为Fe和不可避免杂质;
所述钢板表面设有一层耐腐蚀涂层,按质量份数计包括以下组分:有机硅树脂30份、碳化硅微粉11份、陶瓷微珠12份、氮化硼5份、细晶氧化铝7份、超细氧化锌6份、纳米二氧化钛8份、纳米二氧化硅11份、聚四氟乙烯10份、碳纤维粉5份、消泡剂3份、固化剂3份、粘接剂2份、去离子水34。
前述的钢板按重量百分比计成分为:C:0.62%, Si:0.18%,Mn:0.65%,V:0.09%,Co:0.003%,Cr:0.30%,S:0.0015%, Al:0.066%,N:0.0024%,Mo:0.21%,Ca:0.002%,Cu:0.03%,Nb:0.028%,Ni: 0.31%,W:0.09%,Mg:0.0013%,Ag:0.0012%,Ti:0.004%,其余为Fe和不可避免杂质;
所述钢板表面设有一层耐腐蚀涂层,按质量份数计包括以下组分:有机硅树脂30-40份、碳化硅微粉13份、陶瓷微珠13份、氮化硼7份、细晶氧化铝8份、超细氧化锌8份、纳米二氧化钛10份、纳米二氧化硅13份、聚四氟乙烯11份、碳纤维粉6份、消泡剂4份、固化剂4份、粘接剂3份、去离子水36份。
前述的耐腐蚀涂层的制备方法为:将有机硅树脂和聚四氟乙烯混合搅拌,速度为200-300r/min,时间为30-40min,然后加入碳化硅微粉、陶瓷微珠、氮化硼、细晶氧化铝、超细氧化锌、纳米二氧化钛、纳米二氧化硅和碳纤维粉,以300-400r/min搅拌2-3h,温度升至60-65℃,边搅拌边加入消泡剂、固化剂和粘接剂,继续搅拌20-30min。
本发明一种输油管用高强度耐腐蚀钢及其加工工艺,具体包括以下步骤:
步骤一:按照上述配比将钢材坯料置于加热炉加热,精轧初始温度为1030-1040℃,终轧温度为880-900℃,热轧后以采用压缩空气以3-5℃/s的冷却速率将板坯冷至610-620℃,然后再采用水冷以15-18℃/s的冷却速率将板坯水冷至350-360℃,再采用风冷8-10℃/s的冷却速率将板坯冷至室温;
步骤二:将步骤一加热至580-600℃,并保温35-40min,然后稳定继续加热至900-1000℃,通入煤油进行渗碳处理,然后用雾化冷却以13-16℃/s的速度冷却到室温;
步骤三:将步骤二回炉加热至780-800℃,并保温5-7小时,然后油冷至450-480℃,保温2-4小时,再空冷至室温;
步骤四:将步骤三去毛刺并进行打磨,并在其外壁涂覆防腐蚀涂层,烘干入库。
本发明的有益效果是:
本发明钢板表面涂有一层防腐蚀层,提高了钢板的耐腐蚀能力,在配料中添加硅和钼、钨、铬等结合,提高了抗腐蚀性和抗氧化;添加锰,提高了强度和硬,加入Ti、Al属元素,减轻了钢板的质量,增加了结构强度和耐腐蚀性能,在防腐层涂层中添加碳化硅微粉,增加了耐磨性,同时也提高了强度,添加粘接剂,能够更好地将防腐蚀涂层涂覆在钢板表面,不易脱落,添加聚四氟乙烯和碳纤维粉,能够显著提高本发明的耐腐蚀性能,延长了使用寿命长。
具体实施方式
实施例1
本实施例提供一种输油管用高强度耐腐蚀钢,钢板按重量百分比计成分为:C:0.58%,Si:0.16%,Mn:0.63%,V:0.08%,Co:0.002%,Cr:0.28%,S:0.001%,Al:0.065%,N:0.002%,Mo:0.17%,Ca:0.001%,Cu:0.02%,Nb:0.026%,Ni: 0.28%,W:0.08%,Mg:0.001%,Ag:0.001%,Ti:0.003%,其余为Fe和不可避免杂质;
所述钢板表面设有一层耐腐蚀涂层,按质量份数计包括以下组分:有机硅树脂30份、碳化硅微粉11份、陶瓷微珠12份、氮化硼5份、细晶氧化铝7份、超细氧化锌6份、纳米二氧化钛8份、纳米二氧化硅11份、聚四氟乙烯10份、碳纤维粉5份、消泡剂3份、固化剂3份、粘接剂2份、去离子水34。
本实施例耐腐蚀涂层的制备方法为:将有机硅树脂和聚四氟乙烯混合搅拌,速度为200r/min,时间为40min,然后加入碳化硅微粉、陶瓷微珠、氮化硼、细晶氧化铝、超细氧化锌、纳米二氧化钛、纳米二氧化硅和碳纤维粉,以300r/min搅拌3h,温度升至60℃,边搅拌边加入消泡剂、固化剂和粘接剂,继续搅拌26min。
本实施例一种输油管用高强度耐腐蚀钢及其加工工艺,具体包括以下步骤:
步骤一:按照上述配比将钢材坯料置于加热炉加热,精轧初始温度为1030℃,终轧温度为880℃,热轧后以采用压缩空气以4℃/s的冷却速率将板坯冷至620℃,然后再采用水冷以15℃/s的冷却速率将板坯水冷至360℃,再采用风冷8℃/s的冷却速率将板坯冷至室温;
步骤二:将步骤一加热至580℃,并保温40min,然后稳定继续加热至900℃,通入煤油进行渗碳处理,然后用雾化冷却以14℃/s的速度冷却到室温;
步骤三:将步骤二回炉加热至780℃,并保温6小时,然后油冷至450℃,保温4小时,再空冷至室温;
步骤四:将步骤三去毛刺并进行打磨,并在其外壁涂覆防腐蚀涂层,烘干入库。
实施例2
本实施例提供一种输油管用高强度耐腐蚀钢,钢板按重量百分比计成分为:C:0.62%,Si:0.18%,Mn:0.65%,V:0.09%,Co:0.003%,Cr:0.30%,S:0.0015%, Al:0.066%,N:0.0024%,Mo:0.21%,Ca:0.002%,Cu:0.03%,Nb:0.028%,Ni: 0.31%,W:0.09%,Mg:0.0013%,Ag:0.0012%,Ti:0.004%,其余为Fe和不可避免杂质;
所述钢板表面设有一层耐腐蚀涂层,按质量份数计包括以下组分:有机硅树脂30-40份、碳化硅微粉13份、陶瓷微珠13份、氮化硼7份、细晶氧化铝8份、超细氧化锌8份、纳米二氧化钛10份、纳米二氧化硅13份、聚四氟乙烯11份、碳纤维粉6份、消泡剂4份、固化剂4份、粘接剂3份、去离子水36份。
本实施例耐腐蚀涂层的制备方法为:将有机硅树脂和聚四氟乙烯混合搅拌,速度为200-300r/min,时间为30-40min,然后加入碳化硅微粉、陶瓷微珠、氮化硼、细晶氧化铝、超细氧化锌、纳米二氧化钛、纳米二氧化硅和碳纤维粉,以400r/min搅拌2h,温度升至63℃,边搅拌边加入消泡剂、固化剂和粘接剂,继续搅拌25min。
本实施例一种输油管用高强度耐腐蚀钢及其加工工艺,具体包括以下步骤:
步骤一:按照上述配比将钢材坯料置于加热炉加热,精轧初始温度为1040℃,终轧温度为890℃,热轧后以采用压缩空气以5℃/s的冷却速率将板坯冷至620℃,然后再采用水冷以18℃/s的冷却速率将板坯水冷至350℃,再采用风冷10℃/s的冷却速率将板坯冷至室温;
步骤二:将步骤一加热至600℃,并保温35min,然后稳定继续加热至1000℃,通入煤油进行渗碳处理,然后用雾化冷却以16℃/s的速度冷却到室温;
步骤三:将步骤二回炉加热至800℃,并保温5小时,然后油冷至460℃,保温2小时,再空冷至室温;
步骤四:将步骤三去毛刺并进行打磨,并在其外壁涂覆防腐蚀涂层,烘干入库。
以上实施例仅为说明本发明的技术思想,不能以此限定本发明的保护范围,凡是按照本发明提出的技术思想,在技术方案基础上所做的任何改动,均落入本发明保护范围之内。
Claims (5)
1.一种输油管用高强度耐腐蚀钢,其特征在于,所述钢板按重量百分比计成分为:C:0.53-0.67%, Si:0.15-0.21%,Mn:0.63-0.68%,V:0.05-0.12%,Co:0.002-0.004%,Cr:0.25-0.31%,S:0.001-0.002%, Al:0.065-0.067%,N:0.002-0.003%,Mo:0.13-0.26%,Ca:0.001-0.002%,Cu:0.02-0.04%,Nb:0.026-0.031%,Ni: 0.26-0.35%,W:0.08-0.12%,Mg:0.001-0.0015%,Ag:0.001-0.002%,Ti:0.003-0.007%,其余为Fe和不可避免杂质;
所述钢板表面设有一层耐腐蚀涂层,按质量份数计包括以下组分:有机硅树脂30-40份、碳化硅微粉10-15份、陶瓷微珠12-14份、氮化硼5-8份、细晶氧化铝7-9份、超细氧化锌6-8份、纳米二氧化钛8-12份、纳米二氧化硅11-16份、聚四氟乙烯10-12份、碳纤维粉5-7份、消泡剂3-4份、固化剂3-5份、粘接剂2-4份、去离子水30-40份。
2.根据权利要求1所述的输油管用高强度耐腐蚀钢,其特征在于,所述钢板按重量百分比计成分为:C:0.58%, Si:0.16%,Mn:0.63%,V:0.08%,Co:0.002%,Cr:0.28%,S:0.001%,Al:0.065%,N:0.002%,Mo:0.17%,Ca:0.001%,Cu:0.02%,Nb:0.026%,Ni: 0.28%,W:0.08%,Mg:0.001%,Ag:0.001%,Ti:0.003%,其余为Fe和不可避免杂质;
所述钢板表面设有一层耐腐蚀涂层,按质量份数计包括以下组分:有机硅树脂30份、碳化硅微粉11份、陶瓷微珠12份、氮化硼5份、细晶氧化铝7份、超细氧化锌6份、纳米二氧化钛8份、纳米二氧化硅11份、聚四氟乙烯10份、碳纤维粉5份、消泡剂3份、固化剂3份、粘接剂2份、去离子水34。
3.根据权利要求1所述的输油管用高强度耐腐蚀钢,其特征在于,所述钢板按重量百分比计成分为:C:0.62%, Si:0.18%,Mn:0.65%,V:0.09%,Co:0.003%,Cr:0.30%,S:0.0015%,Al:0.066%,N:0.0024%,Mo:0.21%,Ca:0.002%,Cu:0.03%,Nb:0.028%,Ni: 0.31%,W:0.09%,Mg:0.0013%,Ag:0.0012%,Ti:0.004%,其余为Fe和不可避免杂质;
所述钢板表面设有一层耐腐蚀涂层,按质量份数计包括以下组分:有机硅树脂30-40份、碳化硅微粉13份、陶瓷微珠13份、氮化硼7份、细晶氧化铝8份、超细氧化锌8份、纳米二氧化钛10份、纳米二氧化硅13份、聚四氟乙烯11份、碳纤维粉6份、消泡剂4份、固化剂4份、粘接剂3份、去离子水36份。
4.根据权利要求1所述的输油管用高强度耐腐蚀钢,其特征在于,所述耐腐蚀涂层的制备方法为:将有机硅树脂和聚四氟乙烯混合搅拌,速度为200-300r/min,时间为30-40min,然后加入碳化硅微粉、陶瓷微珠、氮化硼、细晶氧化铝、超细氧化锌、纳米二氧化钛、纳米二氧化硅和碳纤维粉,以300-400r/min搅拌2-3h,温度升至60-65℃,边搅拌边加入消泡剂、固化剂和粘接剂,继续搅拌20-30min。
5.根据权利要求1-3所述的输油管用高强度耐腐蚀钢的热处理工艺,其特征在于,具体包括以下步骤:将
步骤一:按照上述配比将钢材坯料置于加热炉加热,精轧初始温度为1030-1040℃,终轧温度为880-900℃,热轧后以采用压缩空气以3-5℃/s的冷却速率将板坯冷至610-620℃,然后再采用水冷以15-18℃/s的冷却速率将板坯水冷至350-360℃,再采用风冷8-10℃/s的冷却速率将板坯冷至室温;
步骤二:将步骤一加热至580-600℃,并保温35-40min,然后稳定继续加热至900-1000℃,通入煤油进行渗碳处理,然后用雾化冷却以13-16℃/s的速度冷却到室温;
步骤三:将步骤二回炉加热至780-800℃,并保温5-7小时,然后油冷至450-480℃,保温2-4小时,再空冷至室温;
步骤四:将步骤三去毛刺并进行打磨,并在其外壁涂覆防腐蚀涂层,烘干入库。
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