CN1130431C - 一种无机耐高温涂料及其配制方法 - Google Patents

一种无机耐高温涂料及其配制方法 Download PDF

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CN1130431C
CN1130431C CN99114492A CN99114492A CN1130431C CN 1130431 C CN1130431 C CN 1130431C CN 99114492 A CN99114492 A CN 99114492A CN 99114492 A CN99114492 A CN 99114492A CN 1130431 C CN1130431 C CN 1130431C
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coating
silicon carbide
preparation
water glass
temperature
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CN1293220A (zh
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胡恒法
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Meishan Group Co ltd Shanghai
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Meishan Group Co ltd Shanghai
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/24Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
    • C04B28/26Silicates of the alkali metals
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482Coating or impregnation materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00482Coating or impregnation materials
    • C04B2111/00551Refractory coatings, e.g. for tamping
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

本发明公开了一种无机耐高温涂料及其配制方法,以低成本的铝矾土、碳化硅、白泥构成,以水玻璃作为溶剂和粘结剂,搅拌均匀静置即可使用。本发明涂料既具有良好的耐高温抗氧化性,又具有良好的自剥性,可广泛应用于对装配尺寸有要求的热处理件上。

Description

一种无机耐高温涂料及其配制方法
本发明涉及无机非金属涂料,特别涉及一种无机耐高温涂料及其配制方法。
目前,冶金行业一般对耐高温涂料追求的效果是耐高温、耐氧化,并且不易剥落,如中国专利CN9610905.3“耐高温涂料及其生产方法”以及中国专利CN89107740.5“耐高温抗氧化涂料”介绍的就是这种涂料,一般应用于石墨电极、吹气管、渣口、钢钎等部件上。然而在热处理行业,一般部件对涂料的要求是在进行热处理时要耐高温抗氧化,但热处理过后,希望涂料易剥落,便于加工。例如,对于炼钢连铸辊和热轧输送辊进行堆焊修复时,堆焊后需对焊层进行退火处理,为防止焊层、轴头氧化(轴头氧化后,难以满足装配尺寸),在辊子和轴头表面涂抗氧化涂料,为便于进一步堆焊和保证轴头尺寸,希望该涂料在热处理时抗氧化性能要好,处理过后在室温状态下有很好的自剥性。日本专利JP59-184781介绍了一种易剥落的抗氧化涂料,但由于其气密性差,抗氧化效果不够突出。
本发明的目的在于提供一种既耐高温抗氧化,且又有很好自剥性的无机耐高温涂料及其配制方法。
本发明的目的是通过下述方法实现的:利用铝矾土、碳化硅作为骨料,加入白泥,再加入水玻璃作为粘结剂,该无机耐高温涂料的主要成份组成的重量比为:
          铝矾土          25-35份
          碳化硅          10-18份
          白泥            6份
          水玻璃          45-55份(玻美度40)
本发明涂料的配制方法简单:将铝矾土、碳化硅与白泥混合均匀,再加入水玻璃作为粘结剂搅拌均匀静置即可。
部件热处理前,应先去油处理,再刷涂一层本发明涂料,经2-6小时晾干即可。
本发明涂料的有益效果是:由于采用铝矾土和碳化硅作为骨料,使得该涂料即具有良好的耐高温抗氧化性,又具有良好的自剥性,而且其配制和涂覆工艺简单易行。
为检验本发明涂料的耐高温抗氧化效果,我们选取试样进行涂覆涂料和不涂覆涂料热处理对比试验,试验结果见表1。
                      表1
  试编 涂料类型 热处理工艺 原试样厚度mm 去氧化皮后mm 氧化皮厚
  1-1 未涂 980℃*2h     24.1   23.3  0.80mm
  1-2 本发明涂料     24.2   24.05  0.15mm
本发明用于炼钢连铸辊前后轴头热处理抗氧化生产工艺实施如下:
实施例1、首先取27份铝矾土、15份的碳化硅、6份的白泥、52份玻美度40的水玻璃混合搅拌均匀静置,炼钢连铸辊前后轴头在涂覆前必需进行去油处理,再刷涂一层本发明涂料,3小时后进行热处理650℃*10小时空冷。
实施例2、首先取30份铝矾土、15份的碳化硅、6份的白泥、49份玻美度40的水玻璃混合搅拌均匀静置,炼钢连铸辊前后轴头在涂覆前必需进行去油处理,再刷涂一层本发明涂料,4小时后进行热处理650℃*10小时空冷。
经本发明涂料涂覆后炼钢连铸辊前后轴头热处理前后尺寸变化见表2。
表2连铸辊热处理前后轴径尺寸的变化(热处理650℃×10小时)
热处理前轴径mm 热处理后轴径mm   轴径变化mm
涂实施例1涂料     +0.08200+0.02     +0.072000     -0.01-0.02
涂实施例2涂料     +0.02200+0.01     +0.0220     0-0.01
未涂覆涂料     +0.02200+0.05     -0.022000     -0.04-0.05

Claims (2)

1、一种无机耐高温涂料,其特征在于无机耐高温涂料的主要成份组成的重量比为:          铝矾土                25-35份
            碳化硅                10-18份
            白泥                  6份
            玻美度40的水玻璃      45-55份
2、一种配制如权利要求1所述的无机耐高温涂料的方法,其特征在于将铝矾土、碳化硅与白泥混合均匀,再加入水玻璃作为粘结剂搅拌均匀静置。
CN99114492A 1999-10-19 1999-10-19 一种无机耐高温涂料及其配制方法 Expired - Fee Related CN1130431C (zh)

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