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Thermal Spray Powders

Nel processo HVOF, la polvere viene introdotta assialmente in una camera che contiene una fiamma a gas a combustione costante ad alta pressione. Il gas di scarico fuoriesce da un ugello allargato che produce un flusso di gas ad alta velocità. Le particelle di polvere sono riscaldate da questo flusso di gas e trasferite da esso con un'elevata energia cinetica alla superficie del pezzo, formando un rivestimento denso con eccellenti proprietà leganti.

A causa del moderato trasferimento di calore alle particelle di polvere e al pezzo, che rimane relativamente freddo, vi è poca variazione metallurgica nel materiale spruzzato e nel pezzo.

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.

Lo Sapevate che...

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

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