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.


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Principles of selecting the shielding material for shielding box are:

1. if the external magnetic interference is too high, the attenuation shield will be reduced. This is because when the external magnetic field is too high, the magnetic material will be close to magnetic saturation.

2. In the usual case, using the thickness metallic material to produce the shield case is not realistic, because of its high cost.

3. To make the maximum attenuation of the external magnetic field, it is need to use a high permeability (μ) of the material.

4. The magnetic shield effect is the material thickness of the cover shield diameter (at the time of its diagonal rectangular shield) the ratio (t / D) function of shielding.

Based on the above principles of selection, high density tungsten alloy shielding box is the best choice for shielding materials.

 

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The conventional material of medical shielding is lead, atomic number of lead is 82, lead has good energy absorption characteristics, and it is an ideal material for shielding high-energy ionizing radiation. Looking from the particle absorption characteristics, and the lead has good absorption capacity to ionizing radiation which energy is higher 88.0keV and between 13.0keV and 40keV, but  for energy between 40keV to 88.0keV, there is a weak absorption zone.

Tungsten alloy shield is a new shield, and in the case of the same thickness as the lead shield, the effect of tungsten alloy shielding effect is better. And tungsten alloy shield is environmentally friendly, harmless to humans and nature, but lead is toxic, and the source of pollution, so tungsten alloy shield gradually replace lead as the most popular shield.


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Shielding effect of the shielding case is measured by magnetic field intensity attenuation degree of device or component after shielding. After shielding, the magnetic field intensity attenuation rate is the functions of materials’ permeability, thickness and size of the shield function. High magnetic permeability material’s price is higher than the low magnetic permeability material, but if the shielding effect of the single layer of high magnetic permeability material and a multilayer material of low magnetic permeability are the same, then you could choose the thin material of high magnetic permeability, which will be more economical. Tungsten alloy shielding box, lead shielding box are widely used, but the effect of tungsten alloy shielding case is better than lead shielding case, although the thickness of tungsten alloy shielding case is thinner than lead shielding case.

 

Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-alloy.com
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