CN106083055A - 一种环形炉用Si‑N‑Al‑C复合耐高温陶瓷炉底板及制备方法 - Google Patents

一种环形炉用Si‑N‑Al‑C复合耐高温陶瓷炉底板及制备方法 Download PDF

Info

Publication number
CN106083055A
CN106083055A CN201610400466.XA CN201610400466A CN106083055A CN 106083055 A CN106083055 A CN 106083055A CN 201610400466 A CN201610400466 A CN 201610400466A CN 106083055 A CN106083055 A CN 106083055A
Authority
CN
China
Prior art keywords
granularity
less
base plate
fire resistant
furnace
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610400466.XA
Other languages
English (en)
Inventor
骆忠汉
杜玉泉
柳志敏
肖光润
蒋杰
曾剑
付刚
张刚
祝洪喜
邓承继
汪盛明
余奇峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Iron and Steel Co Ltd
Original Assignee
Wuhan Iron and Steel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhan Iron and Steel Corp filed Critical Wuhan Iron and Steel Corp
Priority to CN201610400466.XA priority Critical patent/CN106083055A/zh
Publication of CN106083055A publication Critical patent/CN106083055A/zh
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/515Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
    • C04B35/56Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides
    • C04B35/565Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbides or oxycarbides based on silicon carbide
    • 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
    • C04B35/00Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64Burning or sintering processes
    • 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
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/38Non-oxide ceramic constituents or additives
    • 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
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30Constituents and secondary phases not being of a fibrous nature
    • C04B2235/42Non metallic elements added as constituents or additives, e.g. sulfur, phosphor, selenium or tellurium
    • C04B2235/428Silicon
    • 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
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/54Particle size related information
    • C04B2235/5418Particle size related information expressed by the size of the particles or aggregates thereof
    • C04B2235/5427Particle size related information expressed by the size of the particles or aggregates thereof millimeter or submillimeter sized, i.e. larger than 0,1 mm
    • 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
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/658Atmosphere during thermal treatment
    • 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
    • C04B2235/00Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/66Specific sintering techniques, e.g. centrifugal sintering
    • C04B2235/661Multi-step sintering

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Products (AREA)

Abstract

一种环形炉用Si‑N‑Al‑C复合耐高温陶瓷炉底板,其所用原料组成及wt%:粒度小于5mm的SiC:25~70%,粒度小于0.1mm的Si粉:25~70%,粒度小于0.1 mm的Al4SiC4粉:4~6%,另添加有:上述原料总重量百分比为3~7%的烧结活性剂,及4~9%的结合剂;制备步骤:将上述所有原料进行混碾;成型;进行第一阶段烧结;进行第二阶段烧结;将烧结后毛坯进行机械加工处理并待用。

Description

一种环形炉用Si-N-Al-C复合耐高温陶瓷炉底板及制备方法
技术领域
本发明涉及一种环形炉炉底板及其生产方法,具体地属于一种环形炉用Si-N-Al-C复合耐高温陶瓷炉底板及制备方法。
背景技术
长期以来,在冶金及机械制造工厂的环形炉中,炉底板均采用的是耐热钢质材料制备而成,以承载钢卷和钢件进行热加工生产。这种采用高温合金材料制造的炉底板,由于长时间在950℃左右甚至超过1000℃的高温与荷重的工况条件下工作,炉底板的高温合金材料的耐高温性能特别是高温强度和抗蠕变性能,不能够满足实际工况的要求,金属材料的高温蠕变率大而造成炉底板逐渐弯曲变形,材料的热膨胀率大而造成炉底板开裂损坏,蠕变及开裂等因素造成高温合金材料制备的钢质炉底板之使用寿命较低,更重要的是变形的炉底板会影响所承载钢卷和钢件的热处理质量和成品率,降低生产效益。
目前,环形炉炉底板使用的材质为耐热合金为原材料。该材质其由于在温度和应力作用下会发生蠕变造成变形,从而影响炉底板的使用寿命和硅钢产品的板型及质量。
本申请人经大量试验研究,发现与耐热钢相比,高温陶瓷材料具有高温强度高、抗蠕变性能好、热膨胀率小等优点,不仅可以有效提高底板的使用寿命、降低底板使用成本,而且可以保证所承载钢卷和钢件的热处理质量和成品率,提高经济效益。
发明内容
本发明在于克服现有技术存在的不足,提供一种高温强度高、抗蠕变性能好、热膨胀率小的Si-N-Al-C复合耐高温陶瓷,用以制备使用周期长,制备成本低的加热炉炉底板。
实现上述目的的技术措施:
一种环形炉用Si-N-Al-C复合耐高温陶瓷炉底板,其所用原料组成及重量百分比含量为:粒度小于5mm的SiC:25~70%,粒度小于0.1mm的Si粉:25~70%,粒度小于0.1 mm的Al4SiC4粉:4~6%,另外添加有:上述原料总重量百分比为3~7%的烧结活性剂,及4~9%的结合剂。
其在于:所述的SiC的纯度≥90wt%;所述Si粉的纯度≥95wt%。
其在于:烧结活性剂为Y2O3、或Y2O3与Al2O3的混合物;Y2O3的纯度≥95wt%,粒度小于0.1mm;Al2O3纯度≥95wt%,粒度小于0.1mm。
其在于:所述的结合剂为酚醛树脂或硅溶胶。
制备一种环形炉用Si-N-Al-C复合耐高温陶瓷炉底板的方法,其步骤:
1)将粒度小于5mm的SiC:25~70%,粒度小于0.1mm的Si粉:25~70%,粒度小于0.1 mm的Al4SiC4粉:4~6%,另外添加有:上述原料总重量百分比为3~7%的烧结活性剂,及4~9%的结合剂进行混碾,碾制至利于成型的泥料即可;
2)成型:采用捣打成型或振动成型方式,将制得的泥料装入模具中制成炉底板板坯;
3)进行第一阶段烧结:将炉底板板坯在纯氮气气氛下加热至1270~1430℃,并在该温度下保温1~30h;
4)进行第二阶段烧结:在纯氮气气氛下继续加热至1450℃~1700℃,再在该温度下保温3~12h;
5) 将烧结后毛坯进行机械加工处理并待用。
本发明与现有技术相比,用Si-N-Al-C复合高温陶瓷制备的环形炉,具有耐高温、抗蠕变性能好、高温强度大、抗热震性好,不会开裂,从而提高了钢卷的表面质量;炉底板的使用周期由现在的10个月提高至12个月及以上,且制备炉底板工艺简单、成本比金属炉底板成本低至少45%。
具体实施方式
下面对本发明予以详细描述:
表1为本发明各实施例原料取值列表;
表2为本发明各实施例主要工艺参数取值及性能列表。
本发明各实施例均按照以下步骤生产:
1)将粒度小于5mm的SiC:25~70%,粒度小于0.1mm的Si粉:25~70%,粒度小于0.1 mm的Al4SiC4粉:4~6%,另外添加有:上述原料总重量百分比为3~7%的烧结活性剂,及4~9%的结合剂进行混碾,碾制至利于成型的泥料即可;
2)成型:采用捣打成型或振动成型方式,将制得的泥料装入模具中制成炉底板板坯;
3)进行第一阶段烧结:将炉底板板坯在纯氮气气氛下加热至1270~1430℃,并在该温度下保温1~30h;
4)进行第二阶段烧结:在纯氮气气氛下继续加热至1450℃~1700℃,再在该温度下保温3~12h;
5) 将烧结后毛坯进行机械加工处理并待用。
以下表1及表2中的实施例有关数据并非一一对应关系。
表1 本发明各实施例原料取值列表(wt%)
注:表中各实施例的:SiC的纯度均在90wt%,Si粉的纯度均不低于95wt%;Y2O3的纯度≥95wt%,粒度小于0.1mm; Al2O3纯度≥95wt%,粒度小于0.1mm。
表2 本发明各实施例主要工艺参数取值及性能情况列表
从表2中的性能情况可以看出,本发明的耐高温陶瓷炉底板具有高温强度高、抗高温变形能力强的特点,实际在硅钢环形炉炉底板使用寿命长、硅钢钢卷变形小、产品质量好的特点,能完全替代传统用耐热合金而制备炉底板。
本具体实施方式仅为最佳例举,并非对本发明技术方案的限制性实施。

Claims (5)

1.一种环形炉用Si-N-Al-C复合耐高温陶瓷炉底板,其所用原料组成及重量百分比含量为:粒度小于5mm的SiC:25~70%,粒度小于0.1mm的Si粉:25~70%,粒度小于0.1 mm的Al4SiC4粉:4~6%,另外添加有:上述原料总重量百分比为3~7%的烧结活性剂,及4~9%的结合剂。
2.如权利要求1所述的一种环形炉用Si-N-Al-C复合耐高温陶瓷炉底板,其特征在于:所述的SiC的纯度≥90wt%;所述Si粉的纯度≥95wt%。
3.如权利要求1所述的一种环形炉用Si-N-Al-C复合耐高温陶瓷炉底板,其特征在于:烧结活性剂为Y2O3、或Y2O3与Al2O3的混合物;Y2O3的纯度≥95wt%,粒度小于0.1mm;Al2O3纯度≥95wt%,粒度小于0.1mm。
4.如权利要求1所述的一种环形炉用Si-N-Al-C复合耐高温陶瓷炉底板,其特征在于:所述的结合剂为酚醛树脂或硅溶胶。
5.制备一种环形炉用Si-N-Al-C复合耐高温陶瓷炉底板的方法,其步骤:
1)将粒度小于5mm的SiC:25~70%,粒度小于0.1mm的Si粉:25~70%,粒度小于0.1 mm的Al4SiC4粉:4~6%,另外添加有:上述原料总重量百分比为3~7%的烧结活性剂,及4~9%的结合剂进行混碾,碾制至利于成型的泥料即可;
2)成型:采用捣打成型或振动成型方式,将制得的泥料装入模具中制成炉底板板坯;
3)进行第一阶段烧结:将炉底板板坯在纯氮气气氛下加热至1270~1430℃,并在该温度下保温1~30h;
4)进行第二阶段烧结:在纯氮气气氛下继续加热至1450℃~1700℃,再在该温度下保温3~12h;
5) 将烧结后毛坯进行机械加工处理并待用。
CN201610400466.XA 2016-06-08 2016-06-08 一种环形炉用Si‑N‑Al‑C复合耐高温陶瓷炉底板及制备方法 Pending CN106083055A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610400466.XA CN106083055A (zh) 2016-06-08 2016-06-08 一种环形炉用Si‑N‑Al‑C复合耐高温陶瓷炉底板及制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610400466.XA CN106083055A (zh) 2016-06-08 2016-06-08 一种环形炉用Si‑N‑Al‑C复合耐高温陶瓷炉底板及制备方法

Publications (1)

Publication Number Publication Date
CN106083055A true CN106083055A (zh) 2016-11-09

Family

ID=57228131

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610400466.XA Pending CN106083055A (zh) 2016-06-08 2016-06-08 一种环形炉用Si‑N‑Al‑C复合耐高温陶瓷炉底板及制备方法

Country Status (1)

Country Link
CN (1) CN106083055A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107892577A (zh) * 2017-10-27 2018-04-10 南京柯瑞特种陶瓷股份有限公司 一种Al4SiC4及Al4C3复合增强的碳化硅蜂窝陶瓷及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101423403A (zh) * 2008-11-20 2009-05-06 武汉科技大学 一种碳硅化铝和碳化硅复合材料及其制备方法
CN101423404A (zh) * 2008-11-20 2009-05-06 武汉科技大学 一种Al4SiC4/SiC复合耐火材料及其制备方法
CN101591187A (zh) * 2009-03-19 2009-12-02 宜兴新威利成耐火材料有限公司 高强度氮化硅结合碳化硅材料及其制备方法
CN102795859A (zh) * 2012-08-17 2012-11-28 湖北红花高温材料有限公司 一种环形炉用SiC-Si3N4质高温陶瓷炉底板及其制备方法
CN104177087A (zh) * 2014-08-18 2014-12-03 武汉科技大学 用微波烧结法制备氮化硅结合碳化硅复合材料的方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101423403A (zh) * 2008-11-20 2009-05-06 武汉科技大学 一种碳硅化铝和碳化硅复合材料及其制备方法
CN101423404A (zh) * 2008-11-20 2009-05-06 武汉科技大学 一种Al4SiC4/SiC复合耐火材料及其制备方法
CN101591187A (zh) * 2009-03-19 2009-12-02 宜兴新威利成耐火材料有限公司 高强度氮化硅结合碳化硅材料及其制备方法
CN102795859A (zh) * 2012-08-17 2012-11-28 湖北红花高温材料有限公司 一种环形炉用SiC-Si3N4质高温陶瓷炉底板及其制备方法
CN104177087A (zh) * 2014-08-18 2014-12-03 武汉科技大学 用微波烧结法制备氮化硅结合碳化硅复合材料的方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107892577A (zh) * 2017-10-27 2018-04-10 南京柯瑞特种陶瓷股份有限公司 一种Al4SiC4及Al4C3复合增强的碳化硅蜂窝陶瓷及其制备方法
CN107892577B (zh) * 2017-10-27 2020-04-07 南京柯瑞特种陶瓷股份有限公司 一种Al4SiC4及Al4C3复合增强的碳化硅蜂窝陶瓷及其制备方法

Similar Documents

Publication Publication Date Title
CN102795859A (zh) 一种环形炉用SiC-Si3N4质高温陶瓷炉底板及其制备方法
CN104387038B (zh) 一种改善氧化铝陶瓷型芯高温性能的方法
CN101891486A (zh) 一种用于干熄焦炉的高导热Sialon-SiC复相陶瓷耐火材料及其生产方法
CN104844233A (zh) 一种燃烧炉用的特种耐火材料及其制备方法
CN104876597A (zh) 一种纳米级基质结合高性能电熔镁钙砖及其制造方法
CN107162597A (zh) 一种浇注成型氮化硅结合碳化硅制品的配方及其制作方法
CN107641725B (zh) 一种铁辉石基金属陶瓷及其制备方法
CN113061021A (zh) 一种用于顶燃式热风炉的高热震砖及其制备方法
CN101550005A (zh) 一种生产塞隆/氮化硅复相结合碳化硅制品的方法
CN101983806B (zh) 一种钨基高比重合金薄板的制备方法
CN102219530A (zh) 一种硅莫砖及其制备方法
CN110078511B (zh) 一种Ti3AlC2基陶瓷结合剂金刚石钻进工具刀头的制备方法
CN107021764B (zh) 高温硅线石砖及其生产方法
CN105859305B (zh) 一种抗水化、抗热震的干法氧化钙坩埚制备方法
CN108249935B (zh) 一种用于矿热炉的炉眼砖及其制备方法
CN102491779A (zh) 一种改善氧化铝陶瓷型芯孔隙率的方法
CN101462885A (zh) 一种碳化硅匣钵砖生产工艺
CN113443919A (zh) 一种非晶态合金喷嘴材料及其制备方法
CN107434404B (zh) 一种锆复合高性能电熔镁钙锆砖及其制造方法
CN109265179A (zh) 一种氮化硅材料
CN106083055A (zh) 一种环形炉用Si‑N‑Al‑C复合耐高温陶瓷炉底板及制备方法
CN109053166A (zh) 一种高纯高性能中性干振料及其制备方法和使用方法
CN108298991A (zh) 常压烧结六方氮化硼陶瓷曲面玻璃热弯模具的制造方法
CN110423100B (zh) 一种添加镁碳超细粉的高纯镁碳砖及其制备方法
CN103357865A (zh) 一种增强掺钛粉末冶金材料及其制备方法

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20170616

Address after: 430083 Qingshan District, Hubei, Wuhan factory before the door No. 2

Applicant after: Wuhan iron and Steel Company Limited

Address before: 430083 Qingshan District, Hubei, Wuhan factory before the door No. 2

Applicant before: WUHAN IRON AND STEEL CORPORATION

RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20161109