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1. Long service life of drill bit: the alloy steel material has a long service life, which is higher than similar products;
2, high drilling efficiency: wear-resistant drilling teeth, so that the bit can always keep sharp, so that greatly improve the speed into the teeth;
3. Stable drilling speed: the bit breaks rocks by scraping and shearing;
4. Good diameter protection effect: the new diamond head has strong wear resistance and good diameter protection performance, which can make the cutting teeth used efficiently;
5. Wide range of application: Practice has proved that this bit is suitable for drilling soft and medium hard (drillable rocks below grade 9) such as carbonate rock, limestone, chalk, claystone, siltstone and sandstone, etc. Compared with general drill bits, especially the rock formations of grade 6-8, the effect is particularly significant.
At present, most DTH bits adopt ball - shaped rock - drilling alloy tooth head and spline - shaped tail handle.Bit alloys can be divided into hemisphere teeth, conical teeth, parabolic teeth and other types according to their shapes.Hemispherical teeth have strong bearing capacity and good wear resistance, suitable for drilling hard, medium hard and abrasive rocks;Conical and parabolic teeth drill fast and are suitable for drilling medium hard and non-abrasive rocks.
Application of DTH bit
The DTH bit can also adopt the composite form of ball tooth for side tooth (gauge tooth, rock drill tooth), conical tooth for core tooth (excavation and rock breaking tooth) and parabolic tooth, which can achieve the purpose of fast rock drilling under various types of rocks.
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