CN112342361A - 一种耐海水侵蚀的建筑用钢管的表面处理工艺 - Google Patents

一种耐海水侵蚀的建筑用钢管的表面处理工艺 Download PDF

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CN112342361A
CN112342361A CN202011316326.7A CN202011316326A CN112342361A CN 112342361 A CN112342361 A CN 112342361A CN 202011316326 A CN202011316326 A CN 202011316326A CN 112342361 A CN112342361 A CN 112342361A
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steel pipe
treatment process
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盛斌
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Huzhou Nanxun Zhongsheng Metal Heat Treatment Co ltd
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Abstract

本发明公开了一种耐海水侵蚀的建筑用钢管的表面处理工艺，包括以下步骤：A、用淬火炉对钢管进行加热，加热的温度范围为800‑850℃，然后表面喷砂除锈；B、采用氮气对钢管表面进行吹干并降温至260‑300℃，保温2‑3h；C、将钢管浸泡在锰磷酸磷化液中10‑15min；D、将钢管取出后，对钢管用清水进行清洗，烘干；E、向钢管表面涂覆防腐涂料，烘干，即可。所述的防腐涂料，由以下成分组成：聚醚醚酮粉末、四氟乙烯树脂、树脂、耐磨无机材料、聚醋酸乙烯乳液、氢氧化铝、锆粉、氧化铁红、硅烷偶联剂、膨润土和水。本发明的钢管可以有效抵御海水侵蚀，防止生锈并产生裂纹。

Description

一种耐海水侵蚀的建筑用钢管的表面处理工艺
技术领域
本发明涉及 技术领域，尤其涉及一种耐海水侵蚀的建筑用钢管的表面处理工艺。
背景技术
钢管是用于输送流体和粉状固体、交换热能、制造机械零件和容器，也是一种经济钢材。钢管生产技术的发展开始于自行车制造业的兴起、19世纪初期石油的开发、两次世界大战期间舰船、锅炉、飞机的制造，第二次世界大战后火电锅炉的制造，化学工业的发展以及石油天然气的钻采和运输等，都有力地推动着钢管工业在品种、产量和质量上的发展。钢管按生产方法可分为两大类：无缝钢管和有缝钢管，有缝钢管分直缝钢管和螺旋缝焊管两种。
钢管按生产方法可分为两大类：无缝钢管和有缝钢管,有缝钢管简称为直逢钢管，无缝钢管按生产方法可分为：热轧无缝管、冷拔管、精密钢管、热扩管、冷旋压管和挤压管等。无缝钢管用优质碳素钢或合金钢制成，有热轧、冷轧（拔）之分。焊接钢管因其焊接工艺不同而分为炉焊管、电焊（电阻焊）管和自动电弧焊管，因其焊接形式的不同分为直缝焊管和螺旋焊管两种，因其端部形状又分为圆形焊管和异型（方、扁等）焊管。
建筑工地用钢管长时间暴露在空气中，表面会有一层锈，现有的钢管除锈多为人工手动去清理，这样不仅费时费力，影响效率，而且还除的不够干净，造成不必要的麻烦。而在高低温和潮湿环境下，钢管会变形影响使用，故有必要研究一种耐海水侵蚀的建筑用钢管的表面处理工艺。
发明内容
基于背景技术存在的技术问题，本发明提出了一种耐海水侵蚀的建筑用钢管的表面处理工艺。
本发明的技术方案如下：
一种耐海水侵蚀的建筑用钢管的表面处理工艺，包括以下步骤：
A、用淬火炉对钢管进行加热，加热的温度范围为800-850℃，然后表面喷砂除锈；
B、采用氮气对钢管表面进行吹干并降温至260-300℃，保温2-3h；
C、将钢管浸泡在锰磷酸磷化液中10-15min；
D、将钢管取出后，对钢管用清水进行清洗，烘干；
E、向钢管表面涂覆防腐涂料，烘干，即可。
优选的，所述的步骤B中，所述的氮气的的通入速度为1200-1500mL/min。
优选的，所述的步骤E中，所述的防腐涂料胶膜厚度为3.2-4.5mm。
优选的，所述的步骤E中，所述的防腐涂料，由以下重量百分比的成分组成：22-30%的聚醚醚酮粉末、3-5%的四氟乙烯树脂、18-25%的树脂、5-8%的耐磨无机材料、5-10%的聚醋酸乙烯乳液、3-5%的氢氧化铝、1-2%的锆粉、0.5-3%的氧化铁红、1-2%的硅烷偶联剂、0.8-1.5%的膨润土和水 余量。
进一步优选的，所述的树脂为双酚A环氧树脂。
进一步优选的，所述耐磨无机材料为玻璃鳞片。
本发明的有益之处在于：本发明的耐海水侵蚀的建筑用钢管的表面处理工艺，包括以下步骤：A、用淬火炉对钢管进行加热，加热的温度范围为800-850℃，然后表面喷砂除锈；B、采用氮气对钢管表面进行吹干并降温至260-300℃，保温2-3h；C、将钢管浸泡在锰磷酸磷化液中10-15min；D、将钢管取出后，对钢管用清水进行清洗，烘干；E、向钢管表面涂覆防腐涂料，烘干，即可。本发明通过喷砂除锈、氮气吹干降温、磷化处理、清洗干燥和涂覆防腐涂料，得到的钢管表面可以有效抵御海水侵蚀，防止生锈并产生裂纹，从而有效延长钢管的使用寿命。
具体实施方式
实施例1
一种耐海水侵蚀的建筑用钢管的表面处理工艺，包括以下步骤：
A、用淬火炉对钢管进行加热，加热的温度范围为830℃，然后表面喷砂除锈；
B、采用氮气对钢管表面进行吹干并降温至285℃，保温2.5h；
C、将钢管浸泡在锰磷酸磷化液中12min；
D、将钢管取出后，对钢管用清水进行清洗，烘干；
E、向钢管表面涂覆防腐涂料，烘干，即可。
所述的步骤B中，所述的氮气的的通入速度为1380mL/min。
所述的步骤E中，所述的防腐涂料胶膜厚度为3.6mm。
所述的步骤E中，所述的防腐涂料，由以下重量百分比的成分组成：28%的聚醚醚酮粉末、4%的四氟乙烯树脂、22%的树脂、6%的耐磨无机材料、7%的聚醋酸乙烯乳液、4%的氢氧化铝、1.5%的锆粉、2.5%的氧化铁红、1.5%的硅烷偶联剂、1.2%的膨润土和水 余量。
所述的树脂为双酚A环氧树脂。
所述耐磨无机材料为玻璃鳞片。
实施例2
一种耐海水侵蚀的建筑用钢管的表面处理工艺，包括以下步骤：
A、用淬火炉对钢管进行加热，加热的温度范围为850℃，然后表面喷砂除锈；
B、采用氮气对钢管表面进行吹干并降温至300℃，保温2h；
C、将钢管浸泡在锰磷酸磷化液中15min；
D、将钢管取出后，对钢管用清水进行清洗，烘干；
E、向钢管表面涂覆防腐涂料，烘干，即可。
所述的步骤B中，所述的氮气的的通入速度为1500mL/min。
所述的步骤E中，所述的防腐涂料胶膜厚度为80μm。
所述的步骤E中，所述的防腐涂料，由以下重量百分比的成分组成：30%的聚醚醚酮粉末、3%的四氟乙烯树脂、18%的树脂、8%的耐磨无机材料、5%的聚醋酸乙烯乳液、5%的氢氧化铝、1%的锆粉、3%的氧化铁红、1%的硅烷偶联剂、1.5%的膨润土和水 余量。
所述的树脂为双酚A环氧树脂。
所述耐磨无机材料为玻璃鳞片。
实施例3
一种耐海水侵蚀的建筑用钢管的表面处理工艺，包括以下步骤：
A、用淬火炉对钢管进行加热，加热的温度范围为800℃，然后表面喷砂除锈；
B、采用氮气对钢管表面进行吹干并降温至260℃，保温3h；
C、将钢管浸泡在锰磷酸磷化液中10min；
D、将钢管取出后，对钢管用清水进行清洗，烘干；
E、向钢管表面涂覆防腐涂料，烘干，即可。
所述的步骤B中，所述的氮气的的通入速度为1200mL/min。
所述的步骤E中，所述的防腐涂料胶膜厚度为4.5mm。
所述的步骤E中，所述的防腐涂料，由以下重量百分比的成分组成：22%的聚醚醚酮粉末、5%的四氟乙烯树脂、25%的树脂、5%的耐磨无机材料、10%的聚醋酸乙烯乳液、3%的氢氧化铝、2%的锆粉、0.5%的氧化铁红、2%的硅烷偶联剂、0.8%的膨润土和水 余量。
所述的树脂为双酚A环氧树脂。
所述耐磨无机材料为玻璃鳞片。
实施例4
一种耐海水侵蚀的建筑用钢管的表面处理工艺，包括以下步骤：
A、用淬火炉对钢管进行加热，加热的温度范围为830℃，然后表面喷砂除锈；
B、采用氮气对钢管表面进行吹干并降温至275℃，保温3h；
C、将钢管浸泡在锰磷酸磷化液中12min；
D、将钢管取出后，对钢管用清水进行清洗，烘干；
E、向钢管表面涂覆防腐涂料，烘干，即可。
所述的步骤B中，所述的氮气的的通入速度为1320mL/min。
所述的步骤E中，所述的防腐涂料胶膜厚度为3.2mm。
所述的步骤E中，所述的防腐涂料，由以下重量百分比的成分组成：28%的聚醚醚酮粉末、4%的四氟乙烯树脂、22%的树脂、7%的耐磨无机材料、10%的聚醋酸乙烯乳液、5%的氢氧化铝、1%的锆粉、0.5%的氧化铁红、2%的硅烷偶联剂、0.8%的膨润土和水 余量。
所述的树脂为双酚A环氧树脂。
所述耐磨无机材料为玻璃鳞片。
实施例5
一种耐海水侵蚀的建筑用钢管的表面处理工艺，包括以下步骤：
A、用淬火炉对钢管进行加热，加热的温度范围为800℃，然后表面喷砂除锈；
B、采用氮气对钢管表面进行吹干并降温至300℃，保温2.5h；
C、将钢管浸泡在锰磷酸磷化液中10min；
D、将钢管取出后，对钢管用清水进行清洗，烘干；
E、向钢管表面涂覆防腐涂料，烘干，即可。。
所述的步骤B中，所述的氮气的的通入速度为1200mL/min。
所述的步骤E中，所述的防腐涂料胶膜厚度为105μm。
所述的步骤E中，所述的防腐涂料，由以下重量百分比的成分组成：22%的聚醚醚酮粉末、3%的四氟乙烯树脂、25%的树脂、8%的耐磨无机材料、8%的聚醋酸乙烯乳液、3.5%的氢氧化铝、1.5%的锆粉、0.8%的氧化铁红、1.2%的硅烷偶联剂、1.4%的膨润土和水 余量。
所述的树脂为双酚A环氧树脂。
所述耐磨无机材料为玻璃鳞片。
采用本发明的表面处理工艺对建筑用钢管进行处理后，钢管中性盐雾实验可达15000h以上，防腐蚀效果非常好，可以有效延长钢管的使用寿命。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。

Claims (6)

1.一种耐海水侵蚀的建筑用钢管的表面处理工艺，其特征在于，包括以下步骤：
A、用淬火炉对钢管进行加热，加热的温度范围为800-850℃，然后表面喷砂除锈；
B、采用氮气对钢管表面进行吹干并降温至260-300℃，保温2-3h；
C、将钢管浸泡在锰磷酸磷化液中10-15min；
D、将钢管取出后，对钢管用清水进行清洗，烘干；
E、向钢管表面涂覆防腐涂料，烘干，即可。
2.如权利要求1所述的耐海水侵蚀的建筑用钢管的表面处理工艺，其特征在于，所述的步骤B中，所述的氮气的的通入速度为1200-1500mL/min。
3.如权利要求1所述的耐海水侵蚀的建筑用钢管的表面处理工艺，其特征在于，所述的步骤E中，所述的防腐涂料胶膜厚度为3.2-4.5mm。
4. 如权利要求1所述的耐海水侵蚀的建筑用钢管的表面处理工艺，其特征在于，所述的步骤E中，所述的防腐涂料，由以下重量百分比的成分组成：22-30%的聚醚醚酮粉末、3-5%的四氟乙烯树脂、18-25%的树脂、5-8%的耐磨无机材料、5-10%的聚醋酸乙烯乳液、3-5%的氢氧化铝、1-2%的锆粉、0.5-3%的氧化铁红、1-2%的硅烷偶联剂、0.8-1.5%的膨润土和水 余量。
5.如权利要求4所述的耐海水侵蚀的建筑用钢管的表面处理工艺，其特征在于，所述的树脂为双酚A环氧树脂。
6.如权利要求4所述的耐海水侵蚀的建筑用钢管的表面处理工艺，其特征在于，所述耐磨无机材料为玻璃鳞片。
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Publication number Priority date Publication date Assignee Title
CN100999821A (zh) * 2007-01-25 2007-07-18 张凤焘 一种用于金属管内壁的防腐处理方法
CN106811745A (zh) * 2015-11-30 2017-06-09 广汉市川西机电备件有限责任公司 一种钢管表面处理工艺
CN111100975A (zh) * 2019-12-30 2020-05-05 江苏鑫能材料科技有限公司 一种适用于海工环境的桥梁用钢套筒的生产工艺
CN111659590A (zh) * 2020-06-22 2020-09-15 上海奉贤钢管厂有限公司 一种合金无缝钢管的表面加工处理工艺

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100999821A (zh) * 2007-01-25 2007-07-18 张凤焘 一种用于金属管内壁的防腐处理方法
CN106811745A (zh) * 2015-11-30 2017-06-09 广汉市川西机电备件有限责任公司 一种钢管表面处理工艺
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