The carbide drill bit is divided into four types of foundation types: integral carbide drill bit, carbide resettable blade drill bit, welded carbide drill bit and can be changed to hard alloy tooth drill bit. Each drill bit has the benefits suitable for specific processing premises.

(1) Overall hard alloy drill bit

(2) Carbide replacement blade drill bit

The drill bit of the reducing blade is installed is very wide, the machining depth is 2D ~ 5D (D is aperture), which can be applied to the lathe and other torsion machine tools.

(3) Welding hard alloy drill bit

The welded hard alloy drill bit is made of a hard alloy a crown on the steel drill body. This drill bit uses a self-care geometric blade type, which is small cutting. It can realize brilliant chip maintenance, and the finish of the hole is good, and the size accuracy and positioning accuracy are high. No need Perform subsequent finishing. The drill bit is used in an internal cooling system, which can be used in machining centers, CNC lathes or other high rigidity, high speed machine tools.

(4) Change the hard alloy tooth drill bit

Changes to the hard alloy tooth drill bit is a new generation of drilling tools. It is combined by steel drill body and can be converted to a combination of a coated crown, compared with welded hard alloy drill, and its processing accuracy is eight or less, but because the crown can be changed, it is to reduce processing costs Increase the yield of drilling. This drill bit obtains a cutting aperture size increment and has a self-care function, which is high in aperture.

The drill body and the cemented carbide collocity are locked with each other to lock each other, ensuring that the drill bit assembly has a size precision and overall rigidity of the welded hard alloy drill bit. At the same time, such locking mechanisms have only one unique mating position, so that the tooth crown is easily mounted onto the matching tie rod, so that the repeated positioning accuracy of the change of the retrieval. When tensioning the tension via the process locking the screw, the retrieval / drill assembly is smoothly locked each other, and its adjacent stiffness is sufficient to make a high-speed cross-yield hole processing requirement. Seco-Carboloy uses a high material average with a high material average with a prior emerging injection molding process, making the average intensity and a uniform thermal deformation function. SECO has supplied three specific geometric blades of Crownloc Drill, which is the general geometric blade type with conventional blade passivation radius, blade width and inverted cone angle. Suitable for processing a year. Steel material; the second is a geometric blade type having a wide blade and the reverse, suitable for processing cast iron materials; third geometric blade type can reduce cutting heat and processing hardening, suitable for processing stainless steel and superflicit materials.

When considering the cost of processing per well, the total life of the drill should also be compared. In general, a holistic hard alloy drill bit can only be heavy 7 to 10 times, a welded hard alloy drill bit can only be heavy 3 to 4 times, and can change the hard alloy to the crown drill bit in the processing steel At least its steel drill body can be alive for 20 to 30 times.