Tungsten carbide spiral grooves are the chip spiral shape, depending on the rotation of the tungsten carbide screw-tap that can be divided into left and right helical coil. When left-handed spiral flute tap-tapping down the rows of cuttings, suitable for through-hole tapping processing; discharged tap tapping right-handed spiral upward chip, suitable for blind hole tapping.

Tungsten carbide spiral tap processing characteristics are the followings: firstly, it can be tapped to the blind holes’ lowermost; secondly, it will have no tapping remains; thirdly, it has good machinability.

Tungsten carbide spiral flute tap is the most commonly used, according to the different conditions using different helix angle, it is common right-handed 15° and 42 °. Generally the larger the helix angle, the better the performance chip.Suitable for blind hole machining. When through-hole machining is not the best choice.

 

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Due to the purpose of use, there are various shapes of tungsten carbide screw-tap, its main shape and structure classifiers like the following table in the JIS standard.

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Tungsten carbide machine-taps only has one root, its materials are generally high-speed steel (because of the higher cutting speed), the tail is generally no mortise and tenon (of course there are exceptions) is used when cutting through the machine

Tungsten carbide hand-taps generally have two or three, were called a cone. Two cones and three cones, usually only two.Tungsten carbide hand-taps’ materials are generally carbon tool steel or alloy tool steel. And the tail well and tenon. A portion of the cone cutting edge grinding down six, two inverted cone mill cutting part two edges. When used generally by cutting special wrench.

 

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Tungsten carbide hand-taps refers to carbon tool steel or alloy tool rolling (or incisors) taps for hand tapping; there is a tungsten carbide machine-taps, usually refers to high-speed steel teeth tap for tapping on the machine. However, in production, the two are also used interchangeably. Standard common thread cutting taps. China is customary to manufacture high precision high-speed steel teeth called tungsten carbide machine-taps, the carbon tool steel or alloy tool steel roller teeth (or incisors) called tungsten carbide hand-taps, actually both the structure and works basically the same.

Typically, the taps composed of the working portion and a shank portion. Work part is divided cutting portion and calibration part, the former mill has cut cone, shoulder cutting work, which is calibrated to the size and shape of the thread.

 

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The tungsten walking fishing sinker is flat and rectangular. It works well on rocky bottoms, as it lies flat on top of the rocks instead of falling in between them. You can walk this sinker across the bottom and it gets snagged less often than other sinkers. The tungsten walking fishing sinker slides on your fishing line so a fish won't feel the sinker weight when it picks up your bait. The small footprint of the walking sinker on the bottom reduces your chance of snags.
 
These sinkers are the bread and butter of many live-bait, walleye fisherman. They resemble a rectangle with rounded, outside edges. The top features an eye for the line. This weight distribution positions the sinker with its round edge on bottom, so it will easily glide over rocks, greatly reducing its changes of snagging on the bottom. The semi-flat design also prevents it from rolling along bottom in fast currents.

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Tungsten carbide extruded wire tapping is just one kind of tapping, its shape is characterized by no flutes, only tank, mostly titanium extruded wire tapping, specifically for use in smaller thickness soft gold metal on threading tool .

Tungsten carbide extruded wire tapping general on tapping machines, drilling machines, lathes, milling machines, machining centers and machining of smaller thickness of soft metal processing thread is rather common. Select the correct tungsten carbide wire tapping, to ensure the quality of the thread processing machine, to ensure smooth machining process. For different materials, different processing methods, use of different wire tapping.

Tungsten carbide extruded wire tapping is a non-flute wire tapping, the principle is the use of plastic molding way through wire tapping squeeze in the hole, so that the material to be cut and formed bulge thread. No chips, it will not damage the chip and other issues blocking thread or wire tapping, and therefore most suitable for processing malleable material.

Tungsten carbide extruded wire tapping a variety of precision, accuracy must be based on a different thread, select the corresponding bottom hole size, so as to make the body meets the accuracy requirements of the drawings thread.

 

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Tungsten carbide extrusion-taps have a large number of advantages, looking at the followings:

1.Tungsten carbide extrusion-taps’ no cutting progress makes the work environment more clean;
 
2.Compared with ordinary cutting thread, the tungsten carbide extrusion-taps’ thread forming speed higher;
    
3.High quality processing of the thread surface;
    
4.Since the threads rarely have broken in the processing, thereby extending the life of the tap;
    
5.Due to no particulate material in the tissue cutting process of threading, the processing of the threads have a greater resistance to mechanical tension and torque characteristics;
    
6.For most of the thread processing machine;
    
7.It can be applied to all metal materials melt by drilling, including steel, stainless steel, light metals, aluminum and tensile strength of not more than 1200N/mm metal material.

 

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Tungsten fishing sinker is the future of fishing tackle because it is dense, heavy weight and eco-friendly. Now let’s know something about one tungsten fishing sinker——bank of reef fishing sinker

Tungsten Bank or reef fishing sinkers are the go-to sinker for most anglers, and are adequate for most situations. Their bowling-pin shape leaves them exposed to deep current, which makes them roll along the bottom at times. If you are fishing from a drifting boat or from quiet surf, bank sinkers are fine.
 
This tungsten bank or reef fishing sinkers are like pyramid and egg sinkers in their usage on rigs, yet the sinker does not feature a brass loop to hold line; rather the sinker's top usually has a lead-molded eye. These tapered, egg-shaped sinkers feature hexagon sides instead of a smooth round surface. The flat sides of the sinker help prevent it from rolling in current and the tapered shape helps prevent it from snagging in rocks.

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Tungsten carbide extrusion-taps’ threaded portion has no cutting edge, relying on plastic deformation in the hole formed by extrusion screw.

Tungsten carbide extrusion-taps’ principle is the use of metal and plastic deformation processing thread of a new thread cutter, thread forming taps are no crumbs extrusion process, especially for the lower strength, good ductility of copper alloy and aluminum, can also be used for low carbon steel, stainless steel and low hardness, tapping the plastic material having a large, long life.

Tungsten carbide extrusion-taps’ threaded surface finish extruded, metal fiber thread is not broken, and the chilled layer formed on the surface layer can improve the strength and wear resistance of the thread. It solves the difficult problem of chip tapping fundamentally, because there was no debris, more conducive to the assembly of the tungsten carbide extrusion-taps’ thread. In electronics, plastics industry wide application.

 

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There are some problems during the tungsten carbide screw-tap’s is tapping, involving the  broken tap when processing or retraction. Look at the followings:

1.Tungsten carbide screw-tap’s selection is incorrect; Choosing the right conditions to be processed by the tungsten carbide screw-tap.

2.Encountering the bottom of the hole during the tungsten carbide screw-tap’s is tapping; Bottom depth examination.

3.Cutting excessive torque; Tapping shorten the length; using wire-tapping spiral groove.

4.Bottom is too small; Select the bottom hole diameter according to the corresponding standards.

 

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