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Thermal Spray Powders

En el proceso HVOF, el polvo se introduce axialmente en una cámara en el que una llama de gas está constantemente encendida a alta presión. El gas de escape sale a través de una boquilla de expansión que produce un flujo de gas de alta velocidad. Las partículas de polvo se calientan en este flujo de gas y se transfieren gracias a él con una alta energía cinética a la superficie de la pieza de trabajo, formando un denso recubrimiento con excelentes propiedades de unión.

Debido a la moderada transferencia de calor a las partículas de polvo y a la pieza de trabajo, que mantiene relativamente fría, hay poco cambio metalúrgico en el material pulverizado y la pieza de trabajo.

We use various thermal spraying techniques to protect your components against all forms of wear, such as abrasion, erosion and corrosion. Thermal-sprayed coatings are characterized by a mechanical bonding with the substrate, which provides very good bond strength. This coating technology is very useful for temperature-sensitive base materials.

Kennametal offers both standard and custom alloy and composite thermal spray powders in various size ranges. Our alloy powders are gas atomized, and we offer both sintered & crushed and agglomerated & sintered composite powders:

 

Please visit here for details of our HVOF & Thermal Spray powders.

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Kennametal offers industry standard compositions of carbide-composite thermal spray powders for use with commonly available HVOF systems.

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