CN105461291A - 一种耐火材料高温抗折测试仪加荷用的载样板及压棒 - Google Patents
一种耐火材料高温抗折测试仪加荷用的载样板及压棒 Download PDFInfo
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Abstract
本发明公开了一种耐火材料高温抗折测试仪施加载荷用的载样板及压棒,其物料组成按重量百分比为:板状刚玉50~85﹪,氧化铝微粉??5~30﹪,镁铝尖晶石7~30﹪,结合剂3~7﹪(外加)。本发明所述的物料为非硅系列,不含硅(碳化硅、氮化硅、硅灰、金属Si),故在试验过程中,即在高温、高压的条件下,不与镁质(或含镁质)试样发生作用,因而不会变形,不会粘结。所以,测试结果准确,并且载样板(5)和压棒(1)的使用寿命长。
Description
技术领域
本发明属高温测试仪器部件类,涉及测试耐火材料高温力学性能试验仪施加载荷的机构,特别是涉及一种高温抗折测试仪施加载荷用的载样板及压棒。
背景技术
耐火材料的高温抗折、高温耐压、高温应力应变、压蠕变、荷重软化温度等性能,是其重要的高温力学性能和使用性能。这些高温性能测试仪器的加载机构,分别接触试样的上表面和下表面,由压棒(或称上压棒)和载样板(或称下压棒)组成。试验过程中,在高温、高压的作用下,压棒、载样板必须保持体积稳定,不得与试样发生作用,不能变形。特别是高温抗折仪和以高温折应力为原理的高温应力应变仪,其压棒的施压端部为一条与试样长度方向垂直的直线棱(俗称刀口),其载样板上部与试样接触的是两条与压棒刀口平行的平行刀口;试验(施压)时,仅为三个刀口与试样表面接触,那么,刀口就更不能变形,否则测试就不准确,并且就会缩短压棒和载样板的使用寿命。
专利CN2187307《耐火材料高温抗折强度试验用多功能载样机构》公开了耐火材料高温抗折强度试验用的“载样板用高温强度与热导率较高的氮化硅结合碳化硅制作”。
专利申请CN201310483743.4《一种机压无碳刚玉尖晶石钢包砖及其制备方法》,公开了该钢包砖的物料组成为:
板状刚玉颗粒30~50﹪,
尖晶石颗粒10~20﹪,
板状刚玉细粉10~20﹪,
镁砂细粉1~9﹪,
尖晶石细粉5~15﹪,
硅灰1~10﹪,
氧化铝微粉2~10﹪,
金属Si1~4﹪.
随着冶金工业的发展与进步,镁质(或含镁质)耐火材料的用途、用量不断扩大、增加,碱性耐火材料的性能检测数量也愈来愈大,检测要求愈来愈高;而一直沿用的氮化硅结合碳化硅载样板和压棒,在高温和高压的作用下,因其含有硅(氮化硅、碳化硅),就与镁质(或含镁质)试样发生反应,刀口就会变形,并与试样发生粘结,因而使测试失败,并且造成载样板和压棒报废。而另一现有技术中,也含有硅(硅灰、Si),可以作为钢包砖,但不能作为高温抗折测试仪的载样板和压棒,因其也会与试样发生作用。
发明内容
本发明的目的是克服现有技术与镁质试样发生反应而致变形、粘结的不足,提供一种耐火材料高温抗折测试仪施加载荷用的载样板及
压棒。
本发明的目的可以采用以下技术方案来实现:一种耐火材料高温
抗折测试仪施加载荷用的载样板及压棒,其物料组成按重量百
分比为:
板状刚玉50~85﹪,
氧化铝微粉5~30﹪,
镁铝尖晶石7~30﹪。
结合剂(外加)3~7﹪。
所述的板状刚玉,其颗粒度组成按重量百分比为:
3~1mm25~50﹪,
1~0.5mm13~30﹪,
65目10~25﹪,
325目8~20﹪。
所述的镁铝尖晶石,其颗粒度组成按重量百分比为:
1~0.5mm25~50﹪,
325目50~75﹪。
所述的结合剂,可以是糊精,可以是氮基树脂,可以是聚乙烯醇(PVA)。
所述的上述物料,经混练、成型、烘干、烧成等工序,制成载样板和压棒成品。
本发明的优点:本技术方案的物料为非硅系列,不含硅(碳化硅、氮化硅或硅灰、金属Si),故在试验过程中,在高温、高压的条件下,不与镁质(或含镁质)试样发生作用,因而不会变形,不会粘结。所以,测试结果准确,并且载样板和压棒的使用寿命长。
附图说明
附图1为耐火材料高温抗折测试仪所测试样及载样板、压棒的剖面示意图。
图中:1—压棒,2—压棒刀口,3—试样,4—载样板刀口,5—载样板。
具体实施方式
结合附图,说明本发明的具体实施方式。
实施例1:计划以100公斤物料为例,制作若干套高温抗折测试仪用的载样板5和压棒1。
⑴称取结合剂糊精3Kg,加水制成水溶液,备用。
⑵称取3~1mm板状刚玉25Kg、1~0.5mm板状刚玉18Kg,1~0.5mm镁铝尖晶石4Kg,干混均匀,加入树脂溶液,混匀。
⑶称取65目板状刚玉16Kg,325目板状刚玉10Kg,325目镁铝尖晶石11Kg、氧化铝微粉16Kg,干混均匀后,加至树脂溶液润湿的颗粒料中,进一步混练至均匀。成为合格泥料,备用。
⑷将合格泥料加入模具中,在成型机内成型为载样板、压棒的坯体。入干燥器内,于110℃、保温5小时,烘干。
⑸将烘干的坯体入高温烧成窑,于1600℃、保温4小时烧成。⑹当窑温冷却至常温时,出窑,拣选、检测,合格品即可使用。
实施例2:计划以100公斤物料为例,制作若干套高温抗折测试仪用的载样板5和压棒1。
⑴称取氮基树脂4.5Kg,加水制成水溶液,备用。
⑵称取3~1mm板状刚玉30Kg,1~0.5mm板状刚玉15Kg,1~0.5mm镁铝尖晶石5Kg,干混均匀,加入树脂溶液,混匀。
⑶称取65目板状刚玉15Kg,325目板状刚玉10Kg,325目镁铝尖晶石10Kg,氧化铝微粉15Kg,干混均匀后,加至树脂溶液润湿的颗粒料中,进一步混练至均匀。成为合格泥料,备用。
⑷将合格泥料加入模具中,在成型机内成型为载样板、压棒的坯体。入干燥器内,于110℃、保温5小时,烘干。
⑸将烘干的坯体入高温烧成窑,于1650℃、保温4小时烧成。⑹当窑温冷却至常温时,出窑,拣选、检测,合格品即可使用。
实施例3:计划以100公斤物料为例,制作若干套高温抗折测试仪用的载样板5和压棒1。
⑴称取聚乙烯醇(PVA)5Kg,加水制成水溶液,备用。
⑵称取3~1mm板状刚玉35Kg,1~0.5mm板状刚玉12Kg,1~0.5mm镁铝尖晶石6Kg,干混均匀,加入树脂溶液,混匀。
⑶称取65目板状刚玉13Kg,325目板状刚玉9Kg、325目镁铝尖晶石9Kg、氧化铝微粉16Kg,干混均匀后,加至树脂溶液润湿的颗粒料中,进一步混练至均匀。成为合格泥料,备用。
⑷将合格泥料加入模具中,在成型机内成型为载样板、压棒的坯体。入干燥器内,于110℃、保温5小时,烘干。
⑸将烘干的坯体入高温烧成窑,于1600℃、保温4小时烧成。
⑹当窑温冷却至常温时,出窑,拣选、检测,合格品即可使用。
Claims (5)
1.一种耐火材料高温抗折测试仪施加载荷用的载样板及压棒,
其特征是,其物料组成按重量百分比为:
板状刚玉50~85﹪,
氧化铝微粉5~30﹪,
镁铝尖晶石7~30﹪,
结合剂(外加)3~7﹪。
2.根据权利要求1所述的耐火材料高温抗折测试仪施加载荷用的载样板及压棒,其特征是,所述的板状刚玉,其颗粒度组成按重量百分比为:
3~1mm25~50﹪,
1~0.5mm13~30﹪,
65目10~25﹪,
325目8~20﹪。
3.根据权利要求1所述的耐火材料高温抗折测试仪施加载荷用的载样板及压棒,其特征是,所述的镁铝尖晶石,其颗粒度组成按重量百分比为:
1~0.5mm25~50﹪,
325目50~75﹪。
4.根据权利要求1所述的耐火材料高温抗折测试仪施加载荷用的载样板及压棒,其特征是,所述的结合剂,可以是糊精,可以是氮基树脂,可以是聚乙烯醇。
5.根据权利要求1所述的耐火材料高温抗折测试仪施加载荷用的载样板及压棒,其特征是,所述的物料,经混练、成型、烘干、烧成等工序,制成载样板和压棒成品。
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