Nowadays fracture stone most relys on split entensive intensive platoon hole to control fracture direction. If the holes drilled are over dense. It will waste time and labor. Therefore reducing the number of drilling holes is people's good expectation.
Rock is of compression resistance intensity and weak pull resistance intension, to take full advantage of the obvious difference between the hoth. Of notch in drilled hole, just as draw a line on glass with diamond, it will make the stress concentration to get twice the result with half the effort, reduce the number of drillilng holes, improve work efficiency, reduce cost. Therefore invent our company patent: notching tools.
Experiment prove: afrer notching hole, it can get good effect with hydraulic splitter, static expand power or explosive blasting, the distance between holes of granite may length 2-4 times, the marble may lengthen 1. 5-2 times, thus reduce drilling and power cost.
Drill first, then notch, noting time is only 1 / 10 of that of drilling, operate conveniently, low cost
Rock is of compression resistance intensity and weak pull resistance intension, to take full advantage of the obvious difference between the hoth. Of notch in drilled hole, just as draw a line on glass with diamond, it will make the stress concentration to get twice the result with half the effort, reduce the number of drillilng holes, improve work efficiency, reduce cost. Therefore invent our company patent: notching tools.
Experiment prove: afrer notching hole, it can get good effect with hydraulic splitter, static expand power or explosive blasting, the distance between holes of granite may length 2-4 times, the marble may lengthen 1. 5-2 times, thus reduce drilling and power cost.
Drill first, then notch, noting time is only 1 / 10 of that of drilling, operate conveniently, low cost