Q:Small bit drilling, drilling machine speed is fast or slow?

This size is easy to guarantee. A drill bit is to make two cutting edges for the small angle grinding symmetry, if you want to drill the round, can put some small angle grinding, namely some sharp, this bit in drilling, centering is better, the hole wall is relatively light.

Q:How do we calculate the length of a drill for a bored pile drill?

The length of the drill bit is reduced by 2/3, or 1/3 of the drill bit.

Q:What is the difference between cobalt titanium alloy drill

A drill is the first part of a drill or hand drill.

Q:Why is the drill hole drilled out of the hole triangular?

Drill bit too, two edge to the machined surface in contact angle and surface processing due to too large to cutting into bite cut,Do you like to take the knife to cut wood, and wood knife angle is close to parallel cutting more labor-saving and machine power led to the great bit angle is in itself lead to tremble bit hardtop surface triangular or pentagonal in inappropriate situations

Q:Construction drills, woodworking drills, high-speed steel drills, shapes and uses, what's the difference?

Construction and drilling is referred to as the cement drilling hammer drill. Used for opening holes in concrete, walls, etc.. The overall shape of the handle is straight, and the head is welded with alloy cutter head. No openings at the blade. Trough only.

Q:What are the weight specifications of the drill pile when the bridge pile foundation is constructed?

Impact drilling in two main forms, one for earth or soft rock using tubular hammer, one for hard rock is solid hammer, the general hammer is about 4-5t, if you want to increase, you can hammer on the steel bar plus counterweight.

Q:The maximum diameter of the hammer is fixed up? Can I open the hole? How does an electric drill screw in? How big is the drill bit?

If the opening is often marked with the vertical line, then along a circle hole, knocking out the middle can.

Q:How big is the smallest bit?

Foreign trade HSS full grinding high speed steel straight shank twist drill, drill aluminum iron special twist drill / woodworking drill bit, relevant parameters:Model: YD0.5--14mm;Straight shank twist drill;Material: high speed steel;Blade diameter: manifold;Machine tools, tools, drills.

Q:What's the difference between white, black, and yellow twist drills?

There are 3 processes for producing drills, black for rolling and worst for rolling. White for clean edges and ground. Because, unlike rolling, no high temperature oxidation, the steel grain structure is not damaged, used to drill a slightly higher hardness workpiece.

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

An electric drill can drill holes in various metals, woods, plastics, etc.. Because of stone, brick, concrete is hard and brittle properties of metal and bit strong wear on these materials requires the use of drilling drill, drill hammer (hammer) inlaid with hard alloy with high hardness, impact drill impact and rotation (as with the drill rod drill in as the rock), while on one hand, the stone became a little bit to be cut down into a hole. If you use ordinary drill in drilling stone or concrete, ordinary drill blade will soon be blunt to scrap, and rotation is the impact of improving the drilling efficiency.