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The optimal jet position when water jet assisted drag bit cutting rock
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The jet position has a important influence on cutting process when water jet assists bit cutting rocks. In this paper the test for the effect of jet position on drag bit cutting process is described. The experimental methods, instrumentation and procedure are conducted. Four different jet positions were investigated in the test. The range of diameter of nozzles used is from 0.5 mm to 1.0 mm. The influence of jet position on rock chips formed ahead of bit is discussed. The effect of cut depth, bit velocity on bit force reductions is analyzed. The effectiveness of jet energy is examined for all kind of jet positions. And some important conclusions are given in the end of this paper. One of the most interesting results is that the water jet has the largest effect on drag bit cutting process when it is directed towards the center beneath the bit.
【免责声明】以下全部内容由[李晓红]上传于[2005年06月21日 18时56分20秒],版权归原创者所有。本文仅代表作者本人观点,与本网站无关。本网站对文中陈述、观点判断保持中立,不对所包含内容的准确性、可靠性或完整性提供任何明示或暗示的保证。请读者仅作参考,并请自行承担全部责任。
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