用球状烧结碳化钨代替粒状铸造碳化钨作钢齿钻头齿面堆焊材料是提高齿面强化效果的有效途径。
It is available to strengthen the bit teeth by replacing the granular casting tungsten carbide with the spheroidal sintering tungsten carbide.
用球状烧结碳化钨代替粒状铸造碳化钨作钢齿钻头齿面堆焊材料是提高齿面强化效果的有效途径。
It is available to strengthen the bit teeth by replacing the granular casting tungsten carbide with the spheroidal sintering tungsten carbide.
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