CN108610065A - 一种熔融石英陶瓷坩埚的生产方法 - Google Patents
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Abstract
本发明公开了一种熔融石英陶瓷坩埚的生产方法,本发明属于熔融石英陶瓷制品生产领域,生产该产品使用的原料配方按重量百分比计算:5‑10目熔融石英硅微粉40‑42%、20‑30目熔融石英硅微粉30‑32%、40‑50目熔融石英硅微粉24%、碳化硼2%、氮化硅1%、纳米胶0.30%、过硫酸铵0.10%,四甲基乙二胺0.30%,聚乙二醇200 0.30%;该生产方法具有使用设备少、工艺简单、无污染废弃物排放、产品质量好等一系列优点;产品熔融石英陶瓷坩埚在1250℃以下具有优异的热性能、化学稳定性能和电绝缘性能,主要使用于玻璃深加工行业、冶金工业、电子工业、化工工业、航空航天等领域。
Description
技术领域
本发明属于熔融石英陶瓷制品生产领域,尤其涉及一种以熔融石英硅微粉为原料生产熔融石英陶瓷坩埚的方法。
背景技术
熔融石英陶瓷是一种以熔融石英为原料,采用陶瓷生产工艺制成的熔融石英材料,其特点是:热膨胀系数小、热稳定性好、电绝缘性好、耐化学侵蚀性好;石英陶瓷最大的优点是在l1O0℃ 以下时,其强度随着温度的升高而增加,从室温至1100 ℃时,其强度可增加33%,在1250℃时产品仍可正常使用。熔融石英陶瓷的主要产品种类繁多,如玻璃水平钢化炉用石英陶瓷辊、浮法玻璃窑用闸板砖、浮法玻璃退火炉用空心辊、铸钢用水口、金属带材热处理炉用空心辊、玻璃及冶金窑炉用水口、冲头、坩埚、炉体、科硫、匀科筒、搅拌棒、料盆、旋转管、焦炉炉门及上升管内衬以及绝缘插件、微波屏、灭弧罩、高效间歇炉用热绝缘器、激光反射器和其它光学零件、石英光源用光反射和吸收零件等.此外,在导弹、火箭、雷达等方面也有少量应用。这些产品使用的主要原料都是熔融石英硅微粉,不同点仅是硅微粉的粒度不同、辅料不同、产品的形状不同而已。本发明是一种熔融石英陶瓷坩埚,坩埚是用耐火的材料所制的器皿或熔化罐,当有固体要以大火加热时,就必须使用坩埚,可制作坩埚的材料较多:如石墨、熔融石英陶瓷、瓷、刚玉、碳化硅、白金、镍,由于高纯熔融石英硅微粉具有结构精细、热导率低、热膨胀系数小、制成品尺寸精度高、高温不变形、热震稳定性好、电性能好、耐化学侵蚀性好等特点,因此在玻璃深加工行业、冶金工业、电子工业、化工工业、航空航天等领域得到广泛应用。
发明内容
本发明主要解决的问题是提供一种熔融石英陶瓷坩埚的生产方法,生产该产品使用的原料重量配比为:5-10目熔融石英硅微粉40-42%、20-30目熔融石英硅微粉30-32%、40-50目熔融石英硅微粉24%、碳化硼2%、氮化硅1%、纳米胶0.30%、过硫酸铵0.10%,四甲基乙二胺0.30%,聚乙二醇200 0.30%。
本发明可以通过以下技术方案来实现:
(1)在搅拌罐中先将配方量的纳米胶、过硫酸铵、四甲基乙二胺、聚乙二醇200加入搅拌罐中,常温下搅拌混合均匀,再将配方量的5-10目熔融石英硅微粉、20-30目熔融石英硅微粉、40-50目熔融石英硅微粉、碳化硼、氮化硅送入球磨机球磨2.2-2.4小时,将搅拌罐中的混合物加热至30-35℃后加入球磨机,掺混均匀;
(2)将球磨机中的物料加注入坩埚模具,采用边浇铸边震动的方法浇铸成型,然后加压放置42-44小时后脱去模具,再自然晾干50-52小时;
(3)将晾干的坩埚送入窑炉开始加热升温,先经5-6小时的时间将烧结温度缓慢的从0℃升至400℃后,再在8小时时间内将烧结温度从400℃升至1200-1220℃,维持此温度38-40小时后停止加热,逐步降温至常温后得到熔融石英陶瓷坩埚。
本发明的进一步技术方案是:
步骤(3)所述的窑炉为煤气发生梭式窑炉。
步骤(3)所述的窑炉内的烧结温度为1210℃,烧结的总时间为39小时。
本发明的有益效果是:提供了一种熔融石英陶瓷坩埚的生产方法,该生产方法具有使用设备少、工艺简单、无污染废弃物排放、产品质量好等一系列优点;产品熔融石英陶瓷坩埚可在1250℃以下具有优异的热性能、化学稳定性能和电绝缘性能,主要在玻璃深加工行业、冶金工业、电子工业、化工工业、航空航天等领域使用。
具体实施方式
通过以下实施例进一步描述本发明。
实施例1:
在搅拌罐中先将占总量为0.30%的纳米胶、0.10%的过硫酸铵,0.30%的四甲基乙二胺,0.30%的聚乙二醇200加入搅拌罐中,常温下搅拌混合均匀,再将占总量为40%的5-10目熔融石英硅微粉、占总量为32%的20-30目熔融石英硅微粉、占总量为24%的40-50目熔融石英硅微粉、占总量为2%的碳化硼、占总量为1%的氮化硅送入球磨机球磨2.2-2.4小时,将搅拌罐中的混合物加热至30-35℃后加入球磨机,掺混均匀;将球磨机中的物料加注入坩埚模具,采用边浇铸边震动的方法浇铸成型,然后加压放置42小时后脱去模具,再自然晾干52小时;将晾干的坩埚送入窑炉开始加热升温,先经5小时的时间将烧结温度缓慢的从0℃升至400℃后,再在8小时时间内将烧结温度从400℃升至1200℃,维持此温度40小时后停止加热,逐步降温至常温后得到熔融石英陶瓷坩埚。
实施例2:
在搅拌罐中先将占总量为0.30%的纳米胶、0.10%的过硫酸铵,0.30%的四甲基乙二胺,0.30%的聚乙二醇200加入搅拌罐中,常温下搅拌混合均匀,再将占总量为41%的5-10目熔融石英硅微粉、占总量为31%的20-30目熔融石英硅微粉、占总量为24%的40-50目熔融石英硅微粉、占总量为2%的碳化硼、占总量为1%的氮化硅送入球磨机球磨2.3小时,将搅拌罐中的混合物加热至32.5℃后加入球磨机,掺混均匀;将球磨机中的物料加注入坩埚模具,采用边浇铸边震动的方法浇铸成型,然后加压放置43小时后脱去模具,再自然晾干51小时;将晾干的坩埚送入窑炉开始加热升温,先经5.5小时的时间将烧结温度缓慢的从0℃升至400℃后,再在8小时时间内将烧结温度从400℃升至1210℃,维持此温度39小时后停止加热,逐步降温至常温后得到熔融石英陶瓷坩埚。
实施例3:
在搅拌罐中先将占总量为0.30%的纳米胶、0.10%的过硫酸铵,0.30%的四甲基乙二胺,0.30%的聚乙二醇200加入搅拌罐中,常温下搅拌混合均匀,再将占总量为42%的5-10目熔融石英硅微粉、占总量为30%的20-30目熔融石英硅微粉、占总量为24%的40-50目熔融石英硅微粉、占总量为2%的碳化硼、占总量为1%的氮化硅送入球磨机球磨2.4小时,将搅拌罐中的混合物加热至35℃后加入球磨机,掺混均匀;将球磨机中的物料加注入坩埚模具,采用边浇铸边震动的方法浇铸成型,然后加压放置44小时后脱去模具,再自然晾干50小时;将晾干的坩埚送入窑炉开始加热升温,先经6小时的时间将烧结温度缓慢的从0℃升至400℃后,再在8小时时间内将烧结温度从400℃升至1220℃,维持此温度38小时后停止加热,逐步降温至常温后得到熔融石英陶瓷坩埚。
Claims (3)
1.一种熔融石英陶瓷坩埚的生产方法,其原料配方按重量百分比计算:5-10目熔融石英硅微粉40-42%、20-30目熔融石英硅微粉30-32%、40-50目熔融石英硅微粉24%、碳化硼2%、氮化硅1%、纳米胶0.30%、过硫酸铵0.10%,四甲基乙二胺0.30%,聚乙二醇200 0.30%;其特征是:
(1)在搅拌罐中先将配方量的纳米胶、过硫酸铵、四甲基乙二胺、聚乙二醇200加入搅拌罐中,常温下搅拌混合均匀,再将配方量的5-10目熔融石英硅微粉、20-30目熔融石英硅微粉、40-50目熔融石英硅微粉、碳化硼、氮化硅送入球磨机球磨2.2-2.4小时,将搅拌罐中的混合物加热至30-35℃后加入球磨机,掺混均匀;
(2)将球磨机中的物料加注入坩埚模具,采用边浇铸边震动的方法浇铸成型,然后加压放置42-44小时后脱去模具,再自然晾干50-52小时;
(3)将晾干的坩埚送入窑炉开始加热升温,先经5-6小时的时间将烧结温度缓慢的从0℃升至400℃后,再在8小时时间内将烧结温度从400℃升至1200-1220℃,维持此温度38-40小时后停止加热,逐步降温至常温后得到熔融石英陶瓷坩埚。
2.根据权利要求1所述的一种熔融石英陶瓷坩埚的生产方法,其特征是:步骤(3)所述的窑炉为煤气发生梭式窑炉。
3.根据权利要求1所述的一种熔融石英陶瓷坩埚的生产方法,其特征是:步骤(3)所述的窑炉内的烧结温度为1210℃,烧结的总时间为39小时。
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