HSS-E annular cutter with universal shank DNHC-2

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D.O.C.  25mm
Universal shank for various magentic drills
Made of super tough high speed steel with mulit-cut geometry for ply-cutting and lower feiction to reach better performance of endurance and removal of chips
Applicable to hole cutting and process of annular groove on various magnetic drills and press.


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Q:What kind of steel do you need to drill?!
Drills are usually made of cemented carbide. The so-called carbide is based on tungsten carbide powder as a matrix, cobalt powder as binder, by compression and sintering. Usually containing tungsten carbide 94%, cobalt containing 6%. Because of its high hardness, very wear-resistant, has a certain strength, suitable for high-speed cutting. But the poor toughness, very brittle, in order to improve the performance of the hard alloy, with some hard carbide titanium carbide substrate in chemical vapor deposition of a layer of 5 to 7 microns (TIC) or titanium nitride (TIN), which has higher hardness.
Q:How long the hand-held electric hammer drill?
Hard alloy electric hammer drill body made of high quality alloy steel, the knife head is welded with hard alloy.
Q:What drill does 42CrMo use to drill better?
Carbon structural steel 42CrMo, with ordinary high-speed steel drill bits can be larger, with 60 holes, first with a drill hole, then the reamer drill bottom hole expanding.
Q:What measures can be taken to prevent the bit from breaking
In drilling, the pressure must not be too great for the drilling hole to avoid breaking the bit.
Q:How big is the smallest bit?
A drill bit (Drills) is a tool used to drill through holes or blind holes in solid material and to expand existing holes. The commonly used drills are mainly twist drills, flat drills, center drills, deep hole drills and casing drills. Reaming drill and countersink drill is not in solid material drilling, but it is also customary to put them in a bit.
Q:What does the cutting depth of the drill mean 3D?
For example, 3D, the drill diameter is 20MM, then the effective drilling depth is 60MM, but the actual standard bit slot length must be about 80mm, because we should consider the chip space!!
Q:What are the tools, drills, and any of the machine tools made of?
According to the material: steel knife (carbon tool steel, alloy) alloy knife, ceramic knife, knife and other boron nitride.In the form of the structure: Forged knife knife, knife clip, welding machine.According to the use of points: cylindrical knife, round knife, thread knife, knife, left and right knife, arc knife
Q:Construction drills, woodworking drills, high-speed steel drills, shapes and uses, what's the difference?
There are two types of woodworking drills. One is a carpenter's twist drill. The other is a flat drill. Woodworking twist drill is generally called woodworking drill, the head is 3 with spines, the middle of the long, needle. The sides are slightly shorter with a cutting edge. The blade has an opening. The flat head of a carpenter's drill is flat. A small hole in the center. The top is needle shaped. Without blade, (actually, the blade is at the ends of the flat head, in contrast to the opening of the shape) There are two kinds of handles, plain and six angles.
Q:Want to buy a hammer, with the decoration of the house, how much more appropriate aperture?
Hammer can be used to punch a hole in the concrete on the wall, is not suitable for drilling metal or wood. So the best choice is to choose the multifunctional electric hammer, hammer or hammer drill drill two functions of peace. The utility model can be used as an electric drill in a horizontal drilling file, can be opened on metal or wood, and can also be used for screwing off screws when installing a cabinet. The hammer on the market are the basic functions of.
Q:What drill is best?
The general drill is HSS high-speed steel, and if a good point is high-speed cobalt containing steel, black should be treated by blackening! Black Brown should be TIALN coated!! This drill is usually not custom-made, at most, take the standard drill bit to make a TIALN coating!!

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