Q:Method for processing coolant hole of internal cooling bit

About the processing of the inner cold hole, it depends on the material and the corresponding products. In general, cemented carbide is added to the core when the mold is fixed, and then the core material is different according to the hot melt type.

Q:Want to buy a hammer, with the decoration of the house, how much more appropriate aperture

Must choose the hammer with speed switch. Touch switch when speed is low, can help smooth the drilling machine (for example, on the surface of ceramic tile on the smooth drilling, can not only prevent the bit slip, also can prevent drilling, rupture) during normal operation can be used to ensure high working efficiency.

Q:What is the maximum diameter of the drill bit 1500W heavy hammer

An electric rotary hammer drill with a safety clutch with a pneumatic hammer mechanism. Hammer is the use of compressed gas piston, impact drill bit, need not make much effort, can open 6--100mm in concrete, brick, stone and other hard materials on the hole hammer in the above-mentioned materials on the opening of high efficiency, but it is not a hole in the metal.

Q:What size of drill should we use to drill 10 holes?

Use Phi 10 bit. Use drill chuck quality is good (without obvious shaking) electric drill hole, no margin problem.

Q:How big bits are used for expansion bolts?

Know the expansion bolt diameter, can find out the tube diameter; the borehole diameter is slightly greater than the diameter of expansion pipe can be used, and expansion pipe of the same diameter aperture is slightly larger than the drill out tube diameter.

Q:What drills do you use for screw holes?

The drill depends on the material of the workpiece, and plain steel can be used with plain twist drills.

Q:What's the difference between a twist drill and an impact drill?

Impact drill is based on the modified twist drill to make it suitable for a variety of operational requirements, the shape can understand it, handle + spiral twist drill is simple, impact drill for spiral handle + + flat head.

Q:Can twist drills drill through wall tiles?

To use the electric drill tile or impact drill with drill, drill bit to use glass with water, careful operation, drilling speed from slow growing fast.

Q:Bit grinding, hair and technical requirements

Factory general grinding drill bit is to drill, drill into the general R type, N type, in fact, a total of four grinding twist drill can drill point: X type, R type, S type, N type, in fact, the little bit into these kinds of significance, we all know the drill bit what is not worth the money, make money on it is the efficiency of above treatment can only guarantee the basic meaning of the drill grinding drill bit, and to want to drill efficiency, to the point of efforts to drill bit is related to efficiency.

Q:What's the difference between a drill bit and a tap?

A drill is a tool for drilling; a tap is a tool for cutting threads in a hole. That's the difference between them.