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Tungsten Carbide Square Rod

Category: Tungsten Information
Published on 11 October 2014

Tungsten carbide square rods are long rods with rectangular cross section, also known as tungsten carbide bar. Both its processing technology and performance are the same as tungsten carbide round rod. It has high hardness, abrasion resistance and impact resistance.

Tungsten carbide square rod has good versatility and is easy to weld, and thus suitable for processing wood, non-ferrous metals, cast iron, hardened steel, PCB, etc., and can also be used to manufacture various types of motors, dies and punches.


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Tungsten Carbide Measuring Rod

Category: Tungsten Information
Published on 11 October 2014

Tungsten carbide measuring rod is used to detect inner bore of products using tungsten carbide bars of certain established specifications. With the hardness of 90HRA, tungsten carbide measuring rod has excellent abrasion resistance, long service life, low coefficient of thermal expansion, and is less susceptible to damage and endure high temperature. Its life expectancy is 20-30 times longer than that of steel.

There are four main measuring projects of tungsten carbide measuring rods: aperture, hole center distance, hole position and hole inclination.


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Tungsten Faceted Beads

Category: Tungsten Information
Published on 11 October 2014

Tungsten faceted beads have flat surfaces, facets if you get it, create more reflective surfaces and thusly little shiny glaring spotlights underwater of supreme fish attractiveness.

Flies tied with faceted tungsten do sparkle a little more and have a distinctive look about them. Tungsten faceted beads have been shown to catch 1.7 times more fish than non faceted beads and the tungsten’s properties make these beads sink faster and deeper to where the really gigantic and voracious fish live.

Tungsten faceted beads are available in basic tasteful colors of black, gold, est., and cover the basic sizes from 7/64 oz to 5/32oz.

faced-tungsten-fishing-beads


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China's First Tungsten Carbide Rod

Category: Tungsten Information
Published on 10 October 2014
China's first tungsten carbide rod of φ2 mm was successfully developed and manufactured in 601 factory in September 7,1958, and from then on, China got rid of the control from foreign companies and filled the gap of tungsten carbide rods production in Chinese history.  
 
In March 1958, the task of developing tungsten carbide rods of φ2 mm was given by the state to 601 factory. Factory formed a research group and continued to explore in this field. After an arduous exploration, the group used paraffin to make a mold, and found out the best wax type and optimal dosage. The proper lubricant reduced friction between the mixture and mold wall. A small gadget, which shaped like a small pagoda was put into the mold to spread operating pressure of materials, and thus solved the problem of pressed film. Through constant trying, the group succeeded inimproving the cutting efficiency of rods. As a result, China can finally produce its own tungsten carbide rods without relying on its import, and began to meet the needs of domestic mining explorations.
 
 
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Tungsten Carbide Rod Sintering Process

Category: Tungsten Information
Published on 10 October 2014
Sintering is the final process of tungsten carbide rods forming, which directly affects the densification and uniformity of the chemical properties of products. It is closely related to product performance and accuracy. Currently, the sintering of tungsten carbide rods is often conducted by adopting the methods of vacuum sintering, hot isostatic pressure (HIP) and low-pressure sintering. 
 
The density and bending strength of tungsten carbide rods will be significantly improved and service life be greatly extended if it is put in a hot isostatic press at a pressure of 80 ~ 150MPa and a temperature of 1320 ~ 1400 ℃ and its porosity will be also reduced to 1/20~1/100 or even lower. Methods of vacuum sintering plus hot isostatic pressing can improve product quality more effectively than adopting HIP only. It is why it has become the primary means of producing high-quality cemented carbide rods. 
 
Advantages of low pressure sintering technology is that it can effectively reduce micro-porosity, balance cobalt layer thickness, eliminate cobalt pool to a large extent, and prevent polycrystalline phenomenon caused by high-pressure technologies, while its cost is much lower than that of high-pressure technologies.
 
 
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Non-magnetic Tungsten Carbide Rod

Category: Tungsten Information
Published on 10 October 2014

Non-magnetic tungsten carbide rod refers to the kind of tungsten carbide rods with no magnetism or weak magnetism. Ni binder is a prerequisite to produce this kind of rods.

Non-magnetic tungsten carbide rods mainly apply to magnetic stamping dies and tools. In addition, because of its excellent corrosion resistance, it also applies to equipment components in chemical and food industry.

Major grades of Non-magnetic tungsten carbide rods include: YN8, YN15 and YN20.

 

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Tungsten Carbide Rod Surface Roughness

Category: Tungsten Information
Published on 10 October 2014
Tungsten carbide rods have high hardness and abrasion resistance and thus its grinding process is quite complicated, which includes: coarse grinding, fine grinding, accurate grinding and polishing. There are two types of polishing: matte polishing and mirror polishing. And if necessary, it will have to be supplemented by electrolytic reaming. 
 
Grinding can help cemented carbide rods get higher machining accuracy and lower surface roughness. Grinding precision usually reaches IT6 ~ IT7 tolerance grade, while surface roughness reaching Ra1.25 ~ 0.16μm. If tungsten carbide rods are polished, their surface roughness will be up to Ra0.1 μm, which makes its surface be smooth as that of a mirror. Its dimensional accuracy and shape accuracy can be within 1um, the error of which is equivalent to 1/70 thickness of human hair or even thinner. 
 
Surface roughness Ra of tungsten carbide rods before accurate grinding should be smaller than 6.3um.
 
 
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Tungsten Carbide Three Screw Hole Rod

Category: Tungsten Information
Published on 10 October 2014
Tungsten carbide three screw hole rod has stable mechanical properties and good weldability. It also has high abrasion resistance and impact resistance, and is mainly used in the manufacture of drills, milling cutters, reamers, and other cemented carbide tools. Three screw holes provide cooling in the machining process, which greatly enhance the usability and durability of the tools. The main types of tungsten carbide three screw hole rods include C type-30 °, W type-30 ° and W-type 40 °, etc. Now in China, companies with mature technology to manufacture three screw hole cemented carbide rods are still few.
 
 
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Slotted Tungsten Beads

Category: Tungsten Information
Published on 10 October 2014

Trout and lots of fishes mostly feed on nymphs and aquatics that live in the water, not on the surface. If you want to angle effectively near the bottom in a deep, powerful stream or river or get deeper in a lake. How do you quickly get the fly down deep? Applying slotted tungsten beads with fishing line is rightly the answer.

Slotted tungsten beads are made of tungsten which is about 70% heavier than lead and is more than twice as heavy than brass. It is also corrosion resistance, so that it can adapt to the sea environment, which is salty. Furthermore, which is more important to us, it is non-toxic. Therefore, using slotted tungsten beads is much friendlier to the environment.

Slotted tungsten beads have high density, which is the reason for fishing hook can go deeper in deep sea or lake, and become more powerful in powerful stream. Slotted tungsten beads are preferred by those who have a tendency to fish in deep sea.

slotted-tungsten-beads


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Advantages of Tungsten Fishing Beads

Category: Tungsten Information
Published on 09 October 2014

 A major advantage of having tungsten fishing beads incorporated into your favorite fly patterns is that they provide an element of flash to fly patterns by reflecting sunlight that has penetrated the water's surface.

A trout's diet naturally consists of approximately 90 percent aquatic insects so anything that you can do to your favorite nymph pattern to help get the trout's attention will pay big dividends. When tungsten fishing beads nymph anglers need to understand how fast a fly is going to sink. Experimenting with leader lengths and different sizes and types of beads will be needed to understand how fast the flies will sink. Using the countdown method after the cast will accurately let the fly angler know what level of the water column he or she is fishing.

In most cases when presenting flies to fishing holding in deep holes the smaller more aggressive fish will strike the fly closer to the surface. Getting the fly down deep and rolling it along the bottom will improve your chances of hooking the real lunker in the hole.

tungsten-fly-tying-beads


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