HSS-E annular cutter with universal shank DNHC-5

HSS-E annular cutter with universal shank DNHC-5 System 1

HSS-E annular cutter with universal shank DNHC-5

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 10 pc

Supply Capability:: 5000 pc/month

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DNHC-5

D.O.C. 75mm
Unit：mm
◎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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Type	Size
DAHK-50180	18*75
DAHK-50190	19*75
……	……
DAHK-50500	50*75‍

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Q: Which is better, a white drill or a black drill?: Another is between white and amber. Or above amber. This type of drill is called titanium drill, divided into decorative plating and plating industry. Decorative plating don't have any effect, is good-looking, golden. Very good industrial plating, hardness can reach HRC65 degrees, higher than cobalt drilling hardness (HRC54 degrees).

Q: What is a water bit?: In order to ensure drill bit life, drilling must ensure that the drill is fully cooled, before drilling, fully open the cooling water, stop drilling after cooling water, the higher the drilling speed, the greater the water demand.

Q: Hammer can play with an electric drill steel, can you: The disadvantage is that the vibration is large and has a certain degree of damage to the surrounding structures. The steel bars in concrete structures can not be passed smoothly. They can not be too close to the building because of the scope of work.

Q: How do the new pros and cons drill the drill bit without the key?: This is the hand chuck chuck, is divided into two parts, the front end is used for elastic, rear end is fixed, you want to unload the drill, left to right back to the front to turn in the opposite direction can be loose, Anhui, Bozhou, great electrical firm opened, welcome patronage. Address is: Wanfu market, B building, No. 76-77, which is the general agent of broad brand. Cost-effective

Q: How to recognize the quality of twist drills?: The first is the material: the market has 424160843416342934, 6542, M35, M42 in turn.The second is the process: straight drill are rolling, milling, grinding, milling and drilling are rolling. Ground is the best. The rolling efficiency is much higher than that of milling, so most of the bit is rolled. High quality high speed steel is generally used in grinding.

Q: How do you get yellow on the surface of the drill bit?: Coated cutting tools are in hard alloy high strength and toughness or high speed steel (HSS) on the body surface by vapor deposition method is coated with a thin layer of good abrasion resistance of refractory metal or non metal compounds (can also be applied in ceramics, superhard materials such as diamond and cubic boron nitride blade) obtained. The coating acts as a chemical barrier and thermal barrier, reducing the diffusion and chemical reaction between the tool and the workpiece, thereby reducing the wear of the crescent groove.

Q: How big are the 8 bits that have worked up?: 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 drills are used in tapping 304 stainless steel?: Now on the market is generally a bit alloy steel material whole bit, although the materials are the same, but due to the processing technology, various brands of product quality disparity. Imported and domestic alloy drills are also very different. Imported alloy bit usually adopts VHM micro grain hard alloy (ISO K40), the type of ultrafine particles (0.6 m) in the application of high performance drill and ordinary milling machine, the hardness and toughness of the ideal together. Take high quality alloy bit surface coating, such as chromium aluminum nitride (AlCrN) coating, the coating layer of coating, the thickness of 4 m, the micro hardness is up to 3200HV, the friction coefficient of 0.35, thermal stability up to 1100 degrees celsius. After coating, the drill color is bluish gray. After coating, the alloy drill can process low alloy steel and high strength steel. High steel can reach 54HRC.

Q: Drill hammer type matching specifications: Hard alloy electric hammer drill body made of high quality alloy steel, the knife head is welded with hard alloy. Matched with various electric machine, concrete, brick and other building materials for hard drilling. The utility model is a drilling tool with wide use and high efficiency in the construction and installation industry.

Q: What do you use for drilling walls?: You want to drill the wall can be used with drill impact drill bit iron. If you don't like the iron hammer can buy the drill bit, the difference between the head with Ukraine ladle head. The head with a shaped yellow color of that. You must push the drill to drill in and you too. Big words can not clamp any drill, below 8 may, if you drill is imported can hold 10mm. Do not go to buy a hammer that bit because it does not fit your electric drill.If you drill is also can be installed if the electric hammer drill, drill the domestic only below 8, imports 10.

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