共查询到20条相似文献,搜索用时 62 毫秒
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我公司氧化铝一分厂有5台格子磨,其作用是为拜耳法高压溶出磨制合格的原矿浆,它能否正常运转直接影响着高压溶出的开车。 相似文献
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主要介绍对较长硬齿面渐开线花键孔,采取分步拉削加工时,拉刀的新技术、新特点及应用情况,解决了新型采煤机关键件的加工难题。 相似文献
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由于减速器由软齿面改为硬齿面后,承载能力大为提高,如ZBJ1900488圆柱齿轮减谏器的家际承载能力为旧产品(JB1130、ZQ型减速器等)的三倍以上。此外,冶金设备用的YNK齿轮减速器(YB/T050-93)、带式输送机用的圆锥圆柱齿轮减速器(ZBJ19026-90)同样如此。减速器的体积大 相似文献
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硬齿面减速器取代软齿面减速器,在各类矿山机械中已得到广泛应用,主要体现在其具有较高的承载能力、较长的寿命、噪声低及运行安全可靠等性能。两者档比,硬齿面减速器齿面渗碳淬火,采用磨齿工艺,提高了齿面接触 相似文献
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通过对 2 0CrMnTi热处理过程中的组织变化 ,表层应力的消除方法、机加工过程中的磨削参数选择、砂轮的选择、磨削液的选择等分析 ,提出了防止磨削裂纹产生的措施 相似文献
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Due to its pure convective heat transfer, flexible process parameters, and clean nontoxic quenching medium, gas quenching has become a solution to traditional quench distortion and growing environmental problems. To further improve the productivity of gas quenching, the present quench pressure and flow velocity have been increased to five or more times greater than those common 10 to 20 years ago. Thus, the nonuniformity problem of gas quenching has arisen. Previous works have shown that, by varying the quench pressure, flow velocity, gas type, rack design, and furnace ducts, the uniformity of gas quenching process can be improved. In this paper, the relationships among gas pressure, flow velocity, and cooling-speed uniformity were investigated by CFD analysis coupled with experimental validation. Results indicate that the uniformity of the gas-quenching process can be improved by increasing the quench pressure and decreasing the flow velocity. This can be explained by the smoother gas flow around parts treated with higher quench pressure and lower flow velocity. In addition, it is found from the obtained results that the configuration of parts may influence the cooling capability and uniformity of a gas-quenching process significantly. 相似文献
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千米深井大地压巷道环形支架的应用 总被引:1,自引:0,他引:1
针对邢东矿二水平下山采区胶带下山巷道围岩松软,变形量大的特点,采用了U型钢金属环形支架作为二次支护,有效地解决了巷道两帮移近量大、底臌量大的问题,对于深井巷道支护形式的选择提供了参考。 相似文献
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通过建岩移观测站对观测资料进行计算、分析、研究,初步总结了适合梁家煤矿的岩层移动参数,将实测地表岩移参数在生产中应用,解放了大量可采储量,保证了矿井的可持续发展。 相似文献
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