Tungsten carbide screw-tap compared with most turning, milling and drilling tools are different, tungsten carbide taps’ cutting edge are relatively weak, and the overall strength is lower. Even in the workpiece material is relatively easy to cut when machining, tungsten carbide screw-tap’s cutting edge is also prone to chipping, leading to tool failure. When the low carbon steel tapping, continuous long chips may clog the chip flute taps, thus limiting the number of Tungsten Carbide Screw-tap applied even more easily than the workpiece material tapping steel (such as aluminum and iron).

Steel and other iron-group material are the most common needs of processing and assembly with the screw holes in the material, therefore, tool manufacturers are sparing no effort to develop cutting edge to prevent chipping and breakage of taps. Given carbide and high speed steel can be compared with the innate superiority, and therefore Tungsten Carbide Screw-tap has become a developmental point.

 

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There are several features of Tungsten Carbide Screw-tap, they are the followings:

Material: Consider the wear resistance and impact resistance under the premise of using ultra-fine particles of tungsten carbide. 

Shape: To improve rigidity, no-neck strengthening tap handle type.

Channel: to improve the wear resistance and good chips, using this matches the number of grooves and groove shapes.

Cutting angle: To increase rigidity and prevent chipping, using a special rake angle.

Accuracy: Given the contraction in the thread, using a modest increase size.

Cut length: consideration of the stability and longevity of the cut portion of the length defined in the five teeth.

Tip diameter: To ensure that the actual length of the cut, using a large tip diameter taps.

 

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Tungsten carbide screw-tap’s tapping process exist chip processing problems, due to the tungsten carbide material itself for it features high carbide hardness, brittleness. Tungsten carbide screw-tap’ unique features and characteristics of the manufacturing process design parameters, the use of advanced coating technology, the basic form of the performance characteristics of Tungsten Carbide Screw-tap.

Tungsten Carbide Screw-tap feature to strengthen and improve the wear resistance of the tip, the use of special grooves and cutting angle, while increasing the number of grooves to reduce the amount of each cutting tooth; to improve the wear resistance and anti-stick properties knife , using the TiAlN surface coating with excellent and stable chemical heat and chemical resistance.

 

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
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Due to tungsten carbide twist drill’s shape, the cutting edge features of each point shows the helix angle is changed, the tungsten carbide twist drill’s helix angle directly affects the anterior horn of the main cutting edge.

Tungsten carbide twist drill’s helix angle is larger, the more sharp edge, cutting more light, otherwise it will cause serious hardening phenomenon making the blade quickly wear. According to the relevant tool design data, taking tungsten carbide twist drill’s helix angle of 30 ° to meet the requirements, while allowing for mass production.

 

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Tungsten carbide twist drill’s rake is depended on other geometric parameters.

When high-speed cutting tools, impact deformation and cutting tungsten carbide twist drill’s rake angle of the cutting force is small, while a smaller front corner tip can be enhanced intensity. After determining the current angle, the greater the tungsten carbide twist drill’s rake angle, the more sharp edge, but will correspondingly reduce the impact of the tungsten carbide twist drill’s wedge angle of the tool strength and heat dissipation area. To this end, the smaller the angle of the tungsten carbide twist drill’s drill is selected, taken as 8 °.

 

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Tungsten carbide twist drill’s main geometric parameters include relevant handling drill corner selection, choose angle and the angle of the cutting edge before the drill, impact drill helix angle of the drill-life analysis and cutting edge.

The width of the tungsten carbide twist drill’s drill cuttings and drill apex decision anterior horn size. When the bit diameter and a certain amount of feed when the angle is increased, the iron is narrowed, the cutting edge of the unit load is reduced.Vertex has a great influence on the rake angle, a corresponding increase in the apex angle cutting conditions conducive to improving terrible at. Angle on the direction of chip flow. According to the relevant tool design data, combined with the hardness of the processed products is not high, but the viscous characteristics, select the tungsten carbide twist drill’s drill apex angle of 140 °.

 

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There are several major tungsten carbide twist drill’s auxiliary planes, involving flat base surface, cutting plane, the profile and column profiles.

If the movement is not considered, tungsten carbide twist drill’s head base surface at any point on the main cutting edge due to the characteristics of the structure of tungsten carbide twist drill, the base surface of the drill point of the cutting edge is varied.

Cutting plane at any point on the main cutting edge, the cutting direction is included but the point cut in the plane of the point of the machined surface. Cutting plane and perpendicular to the base surface, and on the main cutting edge of the cutting plane of the points are not the same. The main cutting edge of the column cross-section at any point through the center-line of the drill point and to make the center line of the cylindrical surface of the main cutting edges of different columns of different cross-sectional surface of the cylindrical radius.

 

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Tungsten carbide twist drill is to adapt to the automotive industry and the IT industry high-efficiency machining of glass fiber reinforced plastics processing circuit board (PCB) needed to rapidly develop.

When drilling on the PCB, the exit hole requires no glass fiber nap. With the miniaturization, the diameter of the tungsten carbide drill direction will be small computers and mobile phones development, has a diameter of 0.08mm tungsten carbide twist drill.



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Owning to its excellent properties of tungsten such as high density with small volume, high melting point, excellent hardness, superior wearing resistance, high ultimate tensile strength, high ductility, gold-plated tungsten alloy rod and tungsten alloy golden rod could be regarded as the special present for some fields.

 Gold-plated tungsten rod, tungsten alloy golden rod have similar surface of gold, which is smooth and bright as copper mirror, which it is able to reflect the images next to it. With the similar gold color, it is usually very attractive and pleasant to eye, and be fond of many people.





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There are two schools of thought for tungsten alloy drop shot hooks with tungsten fishing sinker

The one being this, with a swivel inline through the eye: Kind a self explanatory to rig up 

The second is using the same hook as you would for whacky rigging. Extend the tag to the length you need, tie the knot and then re-insert the tag back through they eye of the hook to allow it to stand in the correct manner. There are generally three advantages of tungsten alloy fishing sinkers:

1. Deep bend of the hook allows for a deep, solid hook set while keeping the overall size very compact

2.  Sharp bend at the front of the hook will hold your nose-hooked bait in the right position

3. Down set eye will hold the bait in the right attitude for attracting and catching fish

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