The cemented carbide drill is an equipped with a drilling project. A drill bit used by the core drilling. Steel cylindrical drill body is named due to the inner tungsten carbide. The shape of the cemented carbide cutting tool and its number of inserts on the drill bit, the arrangement, and the insert angle, referred to as the bottom blade, the outer blade and the outer blade to ensure the gap of water and drain. The upper portion of the drill body is a wire buckle to connect the rock core tube, and the side of the drill bit is opened, and there is a water in the bottom lip. The sink and water ports ensure the circulation of the rinsing liquid, reaching the role of excluding rock powder and cooling drill. When drilling the clay layer and the shale formation, in order to increase the gap, the cemented carbide drills are welded in the inside and outside of the carbide drill bit, called the ribbed bit. A needle-shaped self-grinding bit can be used in the hard layer of high abrasive resistance. Generally, the cemented carbide drill is drilled into the rock drill, the stratum of the II-VII; the needle-shaped hard alloy drill bit can be drilled into a VIII rock ring.

A thousands of cemented carbide drills in the market are dazzling. Because the outer table is almost the same, then it is easy to be fooled by the merchant, then how should I choose?

First, processing stability

In addition to considering drilling accuracy requirements, the stability of the machining machine is required when the drill bit is selected.

Machine Tool Stability is critical to the safety service life and drilling accuracy of the drill bit, so it is necessary to carefully verify the working state of the machine spindle, fixture and accessories.

Second, machining accuracy

When choosing a hard alloy drill bit, first consider the specific accuracy requirements of drilling size.

Generally, the smaller the pore size of the processed, the smaller it.