CN106644961A - 一种铝材经铬化处理后成膜重量的快速检测方法 - Google Patents

一种铝材经铬化处理后成膜重量的快速检测方法 Download PDF

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CN106644961A
CN106644961A CN201611181776.3A CN201611181776A CN106644961A CN 106644961 A CN106644961 A CN 106644961A CN 201611181776 A CN201611181776 A CN 201611181776A CN 106644961 A CN106644961 A CN 106644961A
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施超群
杨森
罗筱雄
朱志斌
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Chinalco Ruimin Co Ltd
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Abstract

本发明提供一种铝材经铬化处理后成膜重量的快速检测方法,取经铬化处理的生产样片,规格为100×50mm,将样片置入恒温电烤箱,经400℃烘烤30min后取出,使用色差计进行色差定量检测,获得L、a、b值,使用XRF光谱仪直接测量出铬化膜膜重,将获取的色差b值与铬化膜膜重使用软件进行拟合获得关系线,铬化膜重量=‑1.717334+0.3822799×b,单位mg/m2,当要测量铬化膜膜重时,使用色差计测量经铬化处理的铝材,获得b值,对照膜重与b值的关系线,得出铬化膜重量。依据该铬化膜重量公式,可快速、便捷的检测出铬化膜的重量,有效解决目前铝材表面铬化膜重量检测工艺耗时长、成本高、实际生产不适用等问题,具有良好推广应用的价值。

Description

一种铝材经铬化处理后成膜重量的快速检测方法
技术领域
本发明涉及一种铝材经铬化处理后成膜重量的快速检测方法。
背景技术
铝材用于生产易拉罐上的罐盖产品,需经铬化处理来保证后续涂层附着力。铬化膜膜重是代表铬化效果的重要参数,一定量的膜重反应对铝材铬化效果。
国内目前只有化学分析方法来测试铬化膜重量。因此,急需寻找一种能够快速、便捷的测试铬化膜重量的方法。
发明内容
针对上述问题,本发明提供了一种铝材经铬化处理后成膜重量的快速检测方法。
为实现上述目的,本发明采用如下技术方案:
一种铝材经铬化处理后成膜重量的快速检测方法:取经铬化处理的生产样片,规格为100×50mm,将样片置入恒温电烤箱,经400℃烘烤30min后取出,使用色差计进行色差定量检测,获得L、a、b值,使用XRF光谱仪直接测量出铬化膜膜重,将获取的色差b值与铬化膜膜重使用软件进行拟合获得关系线,铬化膜重量=-1.717334+0.3822799×b,单位mg/m2,当要测量铬化膜膜重时,使用色差计测量经铬化处理的铝材,获得b值,对照膜重与b值的关系线,得出铬化膜重量。
所述方法的具体步骤如下:
(1)取样:用去离子水稀释钝化液,分别取体积浓度梯度为3%-10%的钝化液处理铝材,得到5-10个样片,样片规格为100×50mm;
(2)烘烤处理:分别将样片置入已进入400℃恒温保温状态的电烤箱,烘烤30min后取出;
(3)色差测定:使用色差计对样片中心位置进行色差测量,获得L、a、b值;
(4)铬化膜膜重测定:使用XRF光谱仪分别直接测量出铬化膜膜重;
(5)膜重与b值的关系线获取:将获取的色差b值与铬化膜膜重使用软件进行拟合获得关系线,铬化膜重量=-1.717334+0.3822799×b,单位mg/m2
(6)膜厚计算:使用色差计测量经铬化处理的铝材,获得b值,对照膜重与b值的关系线,得出铬化膜膜重值。
本发明根据铬化膜重量和色差仪测量的b值呈线性关系,铬化膜重量=-1.717334+0.3822799×b,单位mg/m2。依据该铬化膜重量公式,可快速、便捷的检测出铬化膜的重量,有效解决目前铝材表面铬化膜重量检测工艺耗时长、成本高、实际生产不适用等问题,具有良好推广应用的价值。
具体实施方式
为了使本发明所述的内容更加便于理解,下面结合具体实施方式对本发明所述的技术方案做进一步的说明,但是本发明不仅限于此。
实施例1
一种铝材经铬化处理后成膜重量的快速检测方法,具体步骤如下:
(1)取样:用去离子水稀释钝化液,分别取体积浓度梯度为3%-10%的钝化液处理铝材,得到8个样片,样片规格为100×50mm;
(2)烘烤处理:分别将样片置入已进入400℃恒温保温状态的电烤箱,烘烤30min后取出;
(3)色差测定:使用色差计对样片中心位置进行色差测量,获得L、a、b值;
(4)铬化膜膜重测定:使用XRF光谱仪分别直接测量出铬化膜膜重,铬化膜膜重与b值数据如表1所示:
表1
(5)膜重与b值的关系线获取:将获取的色差b值与铬化膜膜重使用软件进行拟合获得关系线,铬化膜重量=-1.717334+0.3822799×b,单位mg/m2
(6)膜厚计算:使用色差计测量经铬化处理的铝材,获得b值,对照膜重与b值的关系线,得出铬化膜膜重值。
使用化学分析法对XRF光谱仪测量膜重及本发明的快速检测法结果进行比对,结果如表2所示。
表2
由表2可知,使用化学分析法、XRF光谱仪测量膜重及快速检测法对铬化膜膜重的测量结果一致。
以上所述仅为本发明的较佳实施例,凡依本发明申请专利范围所做的均等变化与修饰,皆应属本发明的涵盖范围。

Claims (3)

1.一种铝材经铬化处理后成膜重量的快速检测方法,其特征在于:所述方法的具体步骤如下:
(1)取样:用去离子水稀释钝化液,分别取体积浓度梯度为3%-10%的钝化液处理铝材,得到5-10个样片;
(2)烘烤处理:分别将样片置入已进入400℃恒温保温状态的电烤箱,烘烤30min后取出;
(3)色差测定:使用色差计对样片中心位置进行色差测量,获得L、a、b值;
(4)铬化膜膜重测定:使用XRF光谱仪分别直接测量出铬化膜膜重;
(5)膜重与b值的关系线获取:将获取的色差b值与铬化膜膜重使用软件进行拟合获得关系线;
(6)膜厚计算:使用色差计测量经铬化处理的铝材,获得b值,对照膜重与b值的关系线,得出铬化膜膜重值。
2.根据权利要求1所述的铝材经铬化处理后成膜重量的快速检测方法,其特征在于:所述步骤(1)中的样片规格为100×50mm。
3.根据权利要求1所述的铝材经铬化处理后成膜重量的快速检测方法,其特征在于:所述步骤(5)中膜重与b值的关系线为,铬化膜重量=-1.717334+0.3822799×b,单位mg/m2
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