• Metallizing Equipment Co Private Limited

HVOF Spray For Calender Rolls

Metallizing Equipment Co offers HVOF Spray for Calender Rolls. HVOF spraying increases the life of calender rolls. A gloss calendar roll typically has an external diameter of about 1300 mm and a length of about 3500 mm. It is used in the paper industry to get a smooth paper with high gloss and constant density. It works in contact with a doctor blade, thus its surface gets easily worn. The standard surfacing technology consists of chromium plating and results in rolls of three to six months lifetime. The application of wear resistant WC-Co coatings of about 100 microns thickness finished after spraying to the Ra value of 0.01 - 0.03 microns, by the HVOF technique increases the service life of rolls up to two years.