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CN101137896B - 测量熔融金属中气体含量的装置 - Google Patents

测量熔融金属中气体含量的装置 Download PDF

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CN101137896B
CN101137896B CN2006800075849A CN200680007584A CN101137896B CN 101137896 B CN101137896 B CN 101137896B CN 2006800075849 A CN2006800075849 A CN 2006800075849A CN 200680007584 A CN200680007584 A CN 200680007584A CN 101137896 B CN101137896 B CN 101137896B
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埃里克·格里茨
雅克·普勒塞尔斯
乔斯·斯文南
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Heraeus Electro Nite International NV
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    • G01N1/00—Sampling; Preparing specimens for investigation
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Abstract

本发明涉及一种测量熔融金属中气体含量的装置，包括：具有集气本体的浸没端、在浸没端处开口的供气道、以及用于使气体通过集气本体的排气道，以及，本发明的特征在于集气本体包含与熔融金属接触时不形成液态反应产物的材料。

Description

测量熔融金属中气体含量的装置
本发明涉及一种测量熔融金属中气体含量的装置，该装置包括：具有集气本体的浸没端、通向浸没端的供气道、以及用于使气体通过集气本体的排气道，本发明还涉及这种装置的用途。
这样的装置可以从EP307430B1中获知。该文献描述的装置适于测量例如熔融钢中的气体含量，尤其是氢气。这里，集气本体由多孔石制成。对于不同的熔融物，可能出现测量受到影响的情况，原因在于本体的开口被堵塞，或者本体的表面与熔融金属没有形成充分的接触。
根据US6,216,526B1，还已知一种类似的装置。该装置具有石英玻璃管，熔融物收集在该石英玻璃管中。然后，熔融金属可以通过塞子透入浸没式探头的内部，该塞子对于熔融物是可透过的。氧化铝制成的这种塞子可以挡住熔融金属中的杂质。
根据DE3874423T2(EP295798B1)已知一种用于检测熔融金属中气体浓度的探头，该探头包括集气本体，其中集气本体具有供气道、以及用于使气体通过集气本体的排气道。集气本体由氧化铝制成。根据DT2423783A1已知一种浸没式传感器，其使用固体电解质尖晶石结构(solid electrolyte spinel structure)来测量熔融金属中的氧。
本发明基于对现有技术装置进行改进，解决其存在的问题，特别针对防止集气本体的堵塞。
通过本发明的独立权利要求的特征可以解决上述问题。从属权利要求详细说明了优选的构造。
这样，因为集气本体包含与熔融金属接触时不会形成液态反应产物的材料，所以，集气本体的表面不会被杂质充填，由此保证熔融金属与集气本体的接触，从而允许气体交换。特别有益的是，与熔融金属接触时不形成液态反应产物的材料相对于集气本体的含量为至少80重量％，优选为至少90重量％。另外，集气本体为多孔体是有益的，其中，孔隙率优选为大约50％。
有利地，集气本体包含氧化镁和/或氧化铝和/或氧化铬。特别地，集气本体可以包含化学式为AB2O4的材料，其中A为优选自Mg、Fe和Mn的金属，以及，B为优选自Al、Cr、Fe和V的另外的金属。化学式为AB2O4的材料具有尖晶石结构。这种材料可以已经存在于未使用的集气本体中，或者，也可以在浸没时或者在集气本体处于熔融的铁或钢中的时候，立即由集气本体的材料形成这种材料。为了形成AB2O4结构，优选使用上述金属。
根据本发明，不形成液态反应产物的材料至少形成集气本体表面中的一部分作为表层，也就是，至少形成集气本体中设置用于与熔融金属接触的表面部分。表层的厚度为大约0.3mm至5mm。
根据本发明的装置可以用于具有至少100ppm氧含量和/或至少0.1重量％的硫和/镁和/或硅含量的熔融钢。根据本发明的装置还可以用于测量熔融钢中的氢、氮、一氧化碳和/或二氧化碳。
下面，参照附图对本发明的实施方式进行说明，其中：
图1为根据本发明的装置的浸没端的剖面图。
测量熔融金属中气体含量的装置的基本构造可以从例如EP307430B1中获知。EP307430B1的图1及其相关描述，示出了包括带有集气本体的浸没端的测量构造。本发明也与该基本构造有关。测量过程也与例如EP307430B1中所描述的相似。
浸没端1与带载体管的连接管嘴2连接，用该载体管有助于执行浸没处理。连接管嘴包含若干气体通道3、3’，其中，居中布置的气体通道管嘴3’将载气通过供气道4导入熔融金属。供气道4主要由石英管构成，该石英管在其浸没端开口成为另外的弯曲石英管5，使石英管5的开口取向于集气本体6的方向。集气本体6具有环绕供气道4的钟形凹部7。石英管5的开口取向为朝向凹部7，从而使气流从供气道4向凹部7流出。这里，从熔融金属中收集气体，并且由浸没端1的本体将所收集的气体与载气一起导向气体通道3。从气体通道3处继续向相应的测量装置传输。
在连接管嘴2与集气本体6之间，浸没端1具有石英管8，通过粘合剂9或接合剂(cement)10，将石英管8固定于连接管嘴2和集气本体6。石英管8填充有氧化铝11，氧化铝11首先可以固定供气道4，其次可以输送携有待测气体的载气。
集气本体6由MgAl2O4和有机粘合剂构成。集气本体6具有大约50％的孔隙率，从而可以收集来自熔融钢的气体。平均孔径为大约40μm。集气本体的组成保证不会以任何方式使孔堵塞或覆盖而使其保持畅通，从而气体能以不受影响的方式透过。
在另一实例中，集气本体6由压制并烧结的Al2O3--刚玉构成，在压制烧结之后，将其浸没和浸渍在MgO水悬浮液中，从而形成表层。然后，使集气本体6干燥。在处理之后，表层的厚度为大约0.3mm至5mm，优选为1mm至3mm。在图中未示出该表层。

Claims (9)

1.一种测量熔融金属中气体含量的装置，包括：浸没端，具有集气本体；供气道，其在所述浸没端处开口；以及排气道，用于使所述气体通过所述集气本体，其中所述集气本体包含与所述熔融金属接触时不形成液态反应产物的材料，其特征在于：所述不形成液态反应产物的材料至少形成所述集气本体的表面中的一部分作为表层，所述表层设置用于与所述熔融金属接触，以及，所述表层的厚度为大约0.3mm至5mm，以及
所述集气本体包含MgAl2O4材料。
2.一种测量熔融金属中气体含量的装置，包括：浸没端，具有集气本体；供气道，其在所述浸没端处开口；以及排气道，用于使所述气体通过所述集气本体，其中所述集气本体包含与所述熔融金属接触时不形成液态反应产物的材料，其特征在于：所述不形成液态反应产物的材料至少形成所述集气本体的表面中的一部分作为表层，所述表层设置用于与所述熔融金属接触，以及，所述表层的厚度为大约0.3mm至5mm，以及
所述集气本体包含一旦所述装置浸没在熔融的铁或钢中就转变为MgAl2O4的材料。
3.根据权利要求1或权利要求2所述的装置，其特征在于：相对于所述集气本体，与所述熔融金属接触时不形成液态反应产物的材料的含量占至少80重量％。
4.根据权利要求1或权利要求2所述的装置，其特征在于：相对于所述集气本体，与所述熔融金属接触时不形成液态反应产物的材料的含量占至少90重量％。
5.根据权利要求1或权利要求2所述的装置，其特征在于：所述集气本体为多孔体。
6.根据权利要求3所述的装置，其特征在于：所述集气本体为多孔体。
7.根据权利要求4所述的装置，其特征在于：所述集气本体为多孔体。
8.根据权利要求1至权利要求7中任一项权利要求所述的装置在熔融钢中进行测量的用途，所述熔融钢具有至少100ppm的氧含量和/或至少0.1重量％的硫和/或镁和/或硅的含量。
9.根据权利要求1至权利要求7中任一项权利要求所述的装置对熔融钢中氢、氮、一氧化碳和/或二氧化碳进行测量的用途。
CN2006800075849A 2005-03-09 2006-02-27 测量熔融金属中气体含量的装置 Active CN101137896B (zh)

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DE102005011181A DE102005011181A1 (de) 2005-03-09 2005-03-09 Vorrichtung zum Messen des Gasgehaltes in einer Metallschmelze
DE102005011181.5 2005-03-09
PCT/EP2006/001765 WO2006094668A1 (de) 2005-03-09 2006-02-27 Vorrichtung zum messen des gasgehaltes in einer metallschmelze

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DE102007032436B4 (de) 2007-07-10 2009-07-16 Heraeus Electro-Nite International N.V. Vorrichtung zum Sammeln von Gasen in Metallschmelzen
BRPI1103889B1 (pt) * 2011-08-17 2020-09-24 Ecil Met Tec Ltda Sonda de imersão para análise de gases em metal fundido
CN105628769A (zh) * 2015-12-24 2016-06-01 冶金自动化研究设计院 往复式再生法连续测氧传感器

Citations (2)

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EP0295798A1 (en) * 1987-05-28 1988-12-21 Alcan International Limited Probe for determination of gas concentration in molten metal
US6216526B1 (en) * 1998-12-16 2001-04-17 Midwest Instrument Co., Inc. Gas sampler for molten metal and method

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DE2423783A1 (de) * 1974-05-16 1975-12-04 George R Fitterer Tauchsonde fuer die bestimmung des geloesten sauerstoffgehalts von schmelzen
BR8806242A (pt) 1987-03-18 1989-10-31 Electro Nite Aparelho e metodo para a medicao do teor de gas em metal liquido e sonda usada no mesmo
JPH01279704A (ja) * 1988-05-02 1989-11-10 Nippon Steel Corp 溶鋼分析プローブ用ポーラス耐火物
JPH03261847A (ja) * 1990-03-12 1991-11-21 Nippon Steel Corp 溶融金属直接分析用微粒子生成プローブ
DE4305170C1 (de) * 1993-02-19 1994-07-28 Daimler Benz Ag Magnesium und Aluminium enthaltender Spinell, sowie Verfahren zu dessen Synthese und Verwendung des Spinells
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Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
EP0295798A1 (en) * 1987-05-28 1988-12-21 Alcan International Limited Probe for determination of gas concentration in molten metal
US6216526B1 (en) * 1998-12-16 2001-04-17 Midwest Instrument Co., Inc. Gas sampler for molten metal and method

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DE102005011181A1 (de) 2006-09-14
PL1856502T3 (pl) 2015-11-30
KR20070108400A (ko) 2007-11-09
WO2006094668A1 (de) 2006-09-14
KR101249084B1 (ko) 2013-03-29
CA2600266A1 (en) 2006-09-14
CN101137896A (zh) 2008-03-05
JP5014325B2 (ja) 2012-08-29
EP1856502B1 (de) 2015-06-03
CA2600266C (en) 2015-06-16
US7685863B2 (en) 2010-03-30
BRPI0607819A2 (pt) 2009-10-06
ES2544654T3 (es) 2015-09-02
US20080196476A1 (en) 2008-08-21
JP2008533453A (ja) 2008-08-21
AU2006222318A1 (en) 2006-09-14
AU2006222318B2 (en) 2010-02-18

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