• In this article we discussed the possibility of replacement of cobalt alloy by Cr-Ni iron Base alloy in drill bit bearing on the basis of welding test, wearing test and microscopic examination.

    本文通过焊接试验、显微分析和磨损试验论述铬、镍、合金代替、铬、钨合金作石油钻头牙爪堆焊耐磨合金问题。

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  • On the basis of re-surveying the characteristics of iron-bearing furnace dust, suggestions on adoption of base excitating and salvation treating iron-bearing furnace dust were put forth.

    重新审视含铁炉特性基础上提出含铁炉采用激发暨溶剂化处理的建议。

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  • On the basis of re-surveying the characteristics of iron-bearing furnace dust, suggestions on adoption of base excitating and salvation treating iron-bearing furnace dust were put forth.

    重新审视含铁炉特性基础上提出含铁炉采用激发暨溶剂化处理的建议。

    youdao

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