2022-11-23
when opening the hole, the first with small impact work, propulsion force and low speed drilling, in order to facilitate the needle positioning,(need to dust, give the appropriate water to reduce dust) when the needle drilling 10 cm or so, and then with the full throttle impact, and appropriately increase the propulsion force, improve the speed,(need to dust the gas water mixture to maintain the appropriate proportion), normal rock drilling work, drill a drill The rod should stop the operation o
