... 允许误差 PE; permissible error 孕镶金刚石钻头 impregnated diamond bit 孕镶式金刚石钻头 cast diamond bit ...
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本文详细介绍了生产大口径孕镶金刚石钻头的工艺设计方案，值得同业借鉴。
The paper discusses the design program of the production process for large diameter impregnated diamond bits, which offers a reference for people in this field.
通过近二十年的生产实践，从胎体配方等八个方面提出提高绳索取芯孕镶金刚石钻头寿命的方法。
With 20 years'production practice, the writer proposes the methods of improving the service life of wire - line impregnated diamond drilling bits from 8 aspects.
研制出一种两级磨料新型孕镶金刚石钻头，该种钻头解决了时效与寿命不能同步提高这一长期困扰钻头研制者的难题。
A new type of impregnated diamond bit with two sorts of diamond abrasives has been developed, which can improve both penetration rate and service life simultaneously.
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