主权项 |
1.一种无芯感应工频炉炉衬的配制方法,其特征在于按以下方法进行: 1)采用6种粒级相对连续的石英砂进行配比,调整其比例范围具体如下: 炉底部:硼酸1.3~1.5% <tables id="table1" num="001"><table width="764"><tgroup cols="6"><colspec colname="c001" colwidth="16%" /><colspec colname="c002" colwidth="16%" /><colspec colname="c003" colwidth="17%" /><colspec colname="c004" colwidth="17%" /><colspec colname="c005" colwidth="17%" /><colspec colname="c006" colwidth="17%" /><thead><row><entry morerows="1"> 目数 </entry><entry morerows="1"> 6~8 </entry><entry morerows="1"> 8~12 </entry><entry morerows="1"> 12~20 </entry><entry morerows="1"> 20~40 </entry><entry morerows="1"> >200 </entry></row></thead><tbody><row><entry morerows="1"> 比例 </entry><entry morerows="1"> 14~15% </entry><entry morerows="1"> 10~11% </entry><entry morerows="1"> 25~26% </entry><entry morerows="1"> 21~22% </entry><entry morerows="1"> 28~29% </entry></row></tbody></tgroup></table></tables>炉中部:硼酸1.3~1.5% <tables id="table2" num="002"><table width="770"><tgroup cols="7"><colspec colname="c001" colwidth="11%" /><colspec colname="c002" colwidth="15%" /><colspec colname="c003" colwidth="13%" /><colspec colname="c004" colwidth="17%" /><colspec colname="c005" colwidth="17%" /><colspec colname="c006" colwidth="15%" /><colspec colname="c007" colwidth="13%" /><thead><row><entry morerows="1"> 目数 </entry><entry morerows="1"> 6~8 </entry><entry morerows="1"> 8~12 </entry><entry morerows="1"> 12~20 </entry><entry morerows="1"> 20~40 </entry><entry morerows="1"> 40~70 </entry><entry morerows="1"> >200 </entry></row></thead><tbody><row><entry morerows="1"> 比例 </entry><entry morerows="1"> 24~25% </entry><entry morerows="1"> 3~4% </entry><entry morerows="1"> 24~25% </entry><entry morerows="1"> 9~10% </entry><entry morerows="1"> 9~10% </entry><entry morerows="1"> 29~30% </entry></row></tbody></tgroup></table></tables>2)优化烘炉曲线,低温时,降低升温速率,高温时升高升温速率,并将 保温平台后移,其烘炉曲线如下: <tables id="table3" num="003"><table width="877"><tgroup cols="9"><colspec colname="c001" colwidth="15%" /><colspec colname="c002" colwidth="9%" /><colspec colname="c003" colwidth="9%" /><colspec colname="c004" colwidth="11%" /><colspec colname="c005" colwidth="9%" /><colspec colname="c006" colwidth="13%" /><colspec colname="c007" colwidth="9%" /><colspec colname="c008" colwidth="15%" /><colspec colname="c009" colwidth="9%" /><thead><row><entry morerows="1"> 温度区间℃ </entry><entry morerows="1"> 0~200 </entry><entry morerows="1"> 200 </entry><entry morerows="1"> 200~600 </entry><entry morerows="1"> 600 </entry><entry morerows="1"> 600~1100 </entry><entry morerows="1"> 1100 </entry><entry morerows="1"> 1100~1550 </entry><entry morerows="1"> 1550 </entry></row></thead><tbody><row><entry morerows="1"> 升温速率℃/h </entry><entry morerows="1"> 40±5 </entry><entry morerows="1"> 0 </entry><entry morerows="1"> 80±5 </entry><entry morerows="1"> 0 </entry><entry morerows="1"> 100±5 </entry><entry morerows="1"> 0 </entry><entry morerows="1"> 75±5 </entry><entry morerows="1"> 0 </entry></row><row><entry morerows="1"> 升温时间h </entry><entry morerows="1"> 5±0.5 </entry><entry morerows="1"> 5±0.5 </entry><entry morerows="1"> 5±0.5 </entry><entry morerows="1"> 3±0.5 </entry><entry morerows="1"> 5±0.5 </entry><entry morerows="1"> 3±0.5 </entry><entry morerows="1"> 6±0.5 </entry><entry morerows="1"> 2±0.5 </entry></row></tbody></tgroup></table></tables>3)减小保温层的厚度,其厚度为5~7mm,耐火层的三层结构厚度为: 烧结层厚15~20mm,过渡层厚40~70mm,松散层厚30~60mm。 |