Record moisture to reduce corrosion
DETECTION OF MOISTURE LEVEL IN ELECTRODES
The breakdown of water to Hydrogen and Oxygen during welding poses significant threats to the quality of the welds. Coatings of welding electrodes and fluxes readily absorb moisture. Moisture in the electrode may cause weld cracks and porosity.
The presence of these atoms in the weld would increase the risks of porosity, increasing the possibility of weld cracking. Determination of moisture content provides a means to verify that electrodes will not have significant moisture in them before the actual welding occurs.
DETECTION OF MOISTURE LEVEL IN METAL POWDER
The breakdown of water to Hydrogen and Oxygen during welding poses significant threats to the quality of the welds. Coatings of welding electrodes and fluxes readily absorb moisture. Moisture in the electrode may cause weld cracks and porosity.
The presence of these atoms in the weld would increase the risks of porosity, increasing the possibility of weld cracking. Determination of moisture content provides a means to verify that electrodes will not have significant moisture in them before the actual welding occurs.
DETECTION OF MOISTURE LEVEL IN METAL POWDER
Moisture content is how much water is in a product. It influences the physical properties of a substance, including weight, density, viscosity, conductivity, and others. It is generally determined by weight loss upon drying.
Atmospheric humidity is introduced into powders during handling, transportation, and storage. Therefore the surfaces of stored powder grains are always covered by adsorbed moisture. In this way, high moisture content can increase cohesive forces between particles and make it difficult to spread a powder into thin layers in powder bed processes or to fill a mould in processes such as press-and-sinter.
A Karl Fischer Titration is a device that determines the moisture content of samples after the samples are heated to release moisture. The Karl Fischer Titration method is much more accurate at low water levels than the traditional thermogravimetric method.
APPLICATION OF DETERMINATION OF MOISTURE CONTENT:
Real-time measurement of moisture content
Optimize powder processing conditions
Common Test Methods
AWS A4.4
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Virtually all materials interact with water. Our expert chemical testing team can provide moisture content testing in our state-of-the-art laboratory. For more information, call us or send us an enquiry today.
