Positron Emission Tomography (PET)

 

Positron emission tomography (PET) is one of the nuclear medicine techniques available for diagnosis. Whilst X-rays provide information on the structure of the body, PET shows the chemical function of a particular organism. PET involves the injection of FDG (a glucose-based radionuclide) from a shielded syringe into the patient. As the FDG travels through the patient’s body it emits gamma radiation which is detected by a gamma camera, from which the chemical activity within cells and organs can be seen. Any abnormal chemical activity may be a sign that tumours are present.
PET scans are frequently used to detect cancerous tumours and diseases of the brain and coronary arteries.
Applications for tungsten alloy shielding in PET include:
 
PET syringe shield
Tungsten vial shield
Tungsten FDG transport container
Collimator for gamma camera
Technetium generator
 

 

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Tungsten Nuclear Medical Radiation Shielding

 

Tungsten alloy(heavy alloy) is ideal for shielding against X rays and gamma radiation. The very high density of tungsten shielding (more than 60% denser than lead) allows a reduction in the physical size of shielding components, without compromising their rigidity or the effectiveness of the shielding characteristics.
 
Tungsten heavy alloy shielding is used in applications such as collimator, nuclear shielding, beamstop, PET syringe shield, vial shield, isotope container, FDG container, multi leaf collimator etc.
 
 

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Tungsten Alloy Fake Gold Bar

Detecting a high-quality tungsten alloy fake gold bar would be extremely difficult. It would likely require significant and material alterations to the bar being tested and this would negatively affect the marketability if its hallmark veracity were vindicated. Some applications require the tungsten to be fake gold. The main reasons for tungsten fake gold bar are to protect the wire from corrosion or to solder it to other metals.

Besides,tungsten alloy products could also made as tungsten alloy fake gold bar which posses a better electric conductivity, and contribute greatly to the world industry development. Also tungsten fake gold saves the energy and poses no pollution threat to the environment and thus to achieve a sustainable development.ngsten alloy products could also made as tungsten alloy fake gold bar which posses a better electric conductivity, and contribute greatly to the world industry development. Also tungsten fake gold saves the energy and poses no pollution threat to the environment and thus to achieve a sustainable development.




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How to Set Rivets

Rivets are used in a variety of home repair, hobby, and craft applications to fasten thin materials together permanently. A rivet forms a connection when the shaft end of the rivet is deformed to hold it in place. Some rivets can be set by hand, while others require a rivet gun. While setting rivets by hand is a fairly easy operation, it's necessary to gather the right tools and safety equipment to do the job right.

1.Prepare the materials to be fastened by drilling a hole through all layers using the drill and drill bit or by using a punch, depending on the material. Steel or aluminum will require a drill bit, while fabrics and leathers will require a punch. Choose a drill bit or punch size that is the same diameter as the rivet shaft. Choose a rivet depth that matches the total thickness of the materials to be fastened. If the rivet is too long, it will not compress enough and the materials will be free to move. If the rivet is too short, it will not grasp the materials enough and it could pull out of the assembly.

2. Insert the rivet through the drilled or punched holes so that the shaft passes through all of the layers.

3. Place the assembly down on the rivet setting pad, with the end of the shaft oriented upwards. The tip of the rivet should be centered on the cone of the setting pad, so that the sides of the shaft can flare out when the rivet is struck.

4. While wearing safety glasses, hit the head of the rivet squarely with the hammer. 5. Turn the assembly over and examine the end of the rivet. The edges should have flared out away from the center, and the material should be fully compressed between the end of the rivet and the head. Repeat Step 4 if the rivet is not fully compressed.


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How To Distinguish Gold-plated From Real Gold?

If you would like to distinguish gold-plated from real gold, here is a vey easy way: as we know, tungsten gold-plated product is just covered with a thin coat of gold.

You can make some distilled water, take the one you would to test sharpening, and then put it into the distilled water, out of the distilled water for a while.

If it is not gold-plated tungsten material, it will not change color. We think it is better for client to know how to distinguish gold-plated from the real gold first, then it will have a well knowledge about tungsten gold-plated material.






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Advantages of Bucking Bars

Bucking bar is a work tool received behind work surfaces to provide a backing member in applying impact fasteners and including intermitted toolhead and handle parts with a low-recoil impact-absorbing spacer provided there between to take shock loads in compression and shear.

Bucking bars are used on the backside of a metal rivet to counter the force of the hammering on the other side. They also can be used to absorb the force of rivet guns, reducing the vibration of bucking.

Bucking bars used to form bucktails on rivets. And come in many different shapes and sizes. They are normally made from an alloy steel similar to tool steel. The particular shape to be used depends upon the location and accessibility of the rivet to be driven.

The size and weight of the bar depend on the size and alloy of the rivet to be driven. Under certain circumstances, and for specific rivet installations, specially designed bucking bars are manufactured locally.

Bucking bars are normally made from tungsten heavy alloy. All edges are deburred and working surfaces are polished for troubles-free use. This helps to prevent marring of formed bucktails. Please notice that never hold a bucking bar in a vise unless the vise jaws are equipped with protective covers to prevent marring of the bucking bar.




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Station of Tungsten In Chemical Periodic

Tungsten (W) element

Tungsten is a metal element. Tungsten is a chemical element symbol W, belonging to the sixth cycle of the periodic table (the second longest period) of Group VIB through tungsten smelting after the silver-white lustrous metal, high melting point, great hardness, low vapor pressure evaporation rate is smaller, chemically stable.

Basic information

Name: Tungsten

Protons / Electrons: 74

Symbol: W

Neutrons: 110

Atomic Number: 74

Category: Transition Metal

Atomic Weight: 183.84 amu

Crystal Structure: Cubic

M.p.: 3410.0 ° C (3683.15 ° K, 6170.0 ° F)

Density @ 293 K: 19.3 g/cm3

Boiling Point: 5660.0 ° C (5933.15 ° K, 10220.0 ° F)

Color: Silver


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Tungsten Jigs for Deep Sea Fishing

Sea fishing is becoming more and more popular as more anglers are prefer to search for the ultimate thrill in fishing.

That's exactly what you'll get when you venture out deep into the depths of the ocean where some of the biggest pieces of fish you'll ever find are located.

But sea fishing is harder than fishing in river or lake. You should have self-contained fishing tools.

Tungsten alloy fishing jigs will be good tools for your thrill sea fishing. Using tungsten alloy fishing jigs is the fastest and easiest way to add significant weight to your fly. As it’s high density and small volume.




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Tungsten Heavy Alloy Main Application

There are many kinds of tungsten heavy alloy products, different manufacture techniques could have various shapes, such as tungsten heavy alloy rod, cylinder, bar, block, brick, plate, tip, strip, sheet, ultra thin sheet, sphere, pellet, ball, disc, ring, tube, etc.

They could be used in different fields depend on their special properties, such as small capacity but high density, high yield strength, good hardness, excellent elongation, etc.

When it comes to different functions, tungsten heavy alloy could be widely used for different industries and countries in various fields: such as the sports, including golf, fishing, darts, yacht, racing car; the medical, including radiation shielding, source holder, collimator, isotope container, nuclear syringe; the scientific, including tungsten heat sinks, oil drill, mine exploitation.

Due to increasing abundant demand of Depleted Uranium, tungsten alloy is also widely used as a substitution in some parts of military products nowadays. As its high density similar to real gold, tungsten alloy material is very famous as gold-plated substitution. It could be made as gold-plated tungsten bar, golden tungsten brick, gold-plated tungsten bar, golden tungsten paperweight, gold-plated tungsten coin.

 For its high melting point, tungsten alloys are usually used for many high temperature working environments, such as rocket ignitron, turbine, etc. For its environment-friendly, tungsten alloy material is widely made as tungsten heavy alloy fishing sinker, jig, weights, it is much better than lead in small capacity but high density. Depending on special properties, tungsten heavy alloy is very popular in our life now.


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Why Not Tungsten Alloy?

Tungsten alloy product, which is a chemical compound that contains carbon and tungsten and is similar to titanium carbide.

It was originally developed for use as a cutting tool, in machine tools applications, where it still finds widely use today.

Cemented tungsten carbide is neither a metal nor a ceramic, which is prepared by reacting carbon and tungsten at a temperature of between 1400-2000ºC. With its highest hardness as 86~93 HRA (68~81HRC), however, it is not called tungsten alloy, but tungsten carbide, because its superior wear resistance and high cutting speed.

Besides, as it is easy brickle, tungsten carbide is widely used as cutting blade, drill, bits, nozzles, etc. but for crack resistance, tungsten alloys are usually widely used as radiation shielding, crankshaft, counterweight, which are usually made of tungsten heavy alloy materil with its special properties as good elongation, small capacity with high density, good corrosion resistance, wonderful shock resistance, high radiation adsorption capability, etc.


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