A NOTE ON THE DRILLING LOAD OSCILLOGRAM FOR HAMMER DRILL STEEL |
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| Authors: | Zhao Tongwu Chen Renfu Li Zepei Gan Hairen Zhang Baoliang Hong Daling Li Bingxiong Shang Huidi |
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| Affiliation: | Zhao Tongwu,Chen Renfu,Li Zepei,Gan Hairen,Zhang Baoliang (Changsha Institute of Mining and Metallurgy Research),Hong Daling,Li Bingxiong Shang Huidi (Guiyang Institute of Drill Steel) |
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| Abstract: | The load oscillogram for the hammer drill steel is presented to predict the fatigue behaviour and the service life under drilling conditions. Experiments were conducted to measure the longitudinal, flexural and total waves at the front, middle and back parts of the drill steel during drilling granite and limestone. Certain available results have been obtained to expound its failure mechanism and to further develop new type of steel. |
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