Core drilling is a task you want to be confident in doing at all times as an operator. You can become confident by following four easy-to-learn steps to make you more efficient at core drilling. Read this article to learn what four steps you should take.
As an operator, to successfully accomplish core drilling you need a core drill, core bit, water hose, anchor, electric cords, wrenches and Personal Protective Equipment (PPE). The job cannot be successfully done with only the necessary equipment. You need training and you need to be knowledgeable about how to safely use the equipment.
The following four easy-to-learn steps will help you be an effective operator in core drilling:
Water
If you are drilling a wet core bit, you need to use less water and not more water. You need to use less water because the diamonds have to grind away the concrete and too much water will make concrete dust particles wash away and prevent diamonds from being exposed. A moderate amount of water is necessary to help form concrete slurry. Mixing concrete, dust and debris together can only make concrete slurry. The slurry helps the grinding process because it keeps the core bit cool and makes the diamond remain exposed and stay in contact with particles in the slurry. For the best results, you should apply water until the slurry resembles a heavily creamed coffee.
Anchor
When rig anchoring, make sure your drill rig is using physical anchors rated for core drilling and produce optimum results. You should use a base vacuum when the surface is smooth and the vacuum gasket is in good working order. Never use a vacuum base when drilling into a wall or ceiling. It is dangerous. Also, make sure your vacuum filter bottle has no water or debris inside it because they are materials that can harm your vacuum. Use a vacuum gage to make sure your vacuum is adequate to do the job.
Speed
Set your motor to the appropriate revolutions per minute (rpm) to grind properly and glazing the diamond segments. When the diamonds have a predetermined surface speed, then they can perform optimal cutting. All core bits should be set at the correct rpm. For example, the smaller the bit diameter, the faster it should be run.
Power
To sustain the correct drilling speed, you need power. Most core drills are electric-powered. You should use an amp meter when drilling with this type of core drill. Push your drill motor to its maximum rated amperage. Never exceed this rated amperage because the motor will bog down and decrease productivity.
With these essential steps, core drilling can increase your productivity to core holes. You will also save time, save money and improve your safety.
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Source: Four Steps to Efficient Core Drilling
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