Stainless Steel Hole Saw

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FAQ

Electric hammer drill killed what should take down

1, backward extrusion head, drill can be pulled out.2, black down, iron also press down, it came out.3, there may be a problem that the pearl inside the chuck. The drill down, pressure head black chuck, a few more to return a bit range.

Do you have any special drill for aluminum alloy?

Twist drill grinding points need to pay attention to, first of all to ensure that the correct grinding angle. The two main cutting edge length and angle to symmetry, there is a formula: drill blade surface on the wheel. The drill shaft out of the front, left oblique angle. From the back edge grinding angle, swing up and down the tail don't tilt.If necessary, the cross edge can be repaired, and the trimming edge and the chip separation groove can be polished, and the blade should be cooled during the grinding process to avoid the edge annealing.

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.

What drill is best?

Material is 6542, even better, it contains cobalt... Then coated TiAIN pure blackThe effect is better than your black brownI have a punch hereOrdinary processing around 3WAfter coating processing can do 25-30W or soThe effect is very strongThe drill you want, I can do for you. I'm from the tool factory

Which is better, a white drill or a black drill?

Color is not directly related to quality. High quality, fully ground, high-speed steel drills often appear in white. Of course, the rolling bit can also be made white by grinding the outer circle. The reason is that high quality, in addition to the material itself, in the process of grinding quality control is quite strict, the tool surface will not appear burns. Black is an oxygen treated drill. It is a chemical method to increase the durability of the tool after placing the cutting tool in a mixture of ammonia and water vapor and after 540-560C degrees of thermal insulation.

The installation method of the electric hammer drill

Installed before the first drill, electric hammer drill chuck down below the eye in the end, the drill chuck and eye separation (and when necessary to drill chuck on the eye piece to mention) will be inserted in the end bit to the eyes, and then release the chuck let it return. After installed, the lift hammer bit hard top on the wall or ground test drilling, if a clear sense of the impact that the drill bit installed in place. Otherwise you'll have to reinstall it.

How much bit should we use to punch the M5 hole? Tapping with Duodasi attack? Why use 8.3 drill bit in the hole of M10? How do you know how big it is to punch and tap?

The drill diameter (i.e. threaded hole diameter) = diameter of screw - pitch

How much is an alloy drill bit?

This need to see what factors such as specifications and brands affect. 10MM, for example, is about 100 of the average.