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PDH dies can have infinite life - capture and removal of lubricant contaminants

Wire coating by PDH system
Wire coating by PDH system

Unavoidable fines (abrasive particles) generate the most destructive lubricant contaminants in wire drawing. This is no longer an alarming phenomenon since the introduction of the Decalub green and dry rod preparation and wire lubrication including PDH coating system.

In the most demanding wire drawing applications, the PDH die's wear is reduced to a unmeasurable level (about 0.2 micron per tonne), meaning that three-body abrasive wear is virtually eliminated. Generation of abrasive particles (fines), the most destructive lubricant contaminant, is continuously liberated from the wire surface during drawing and PDH captured, encapsulated and transported with drawn wire from block to block out of the machine.

The lubricant film created is of such a configuration as to induce a hydrodynamic lubricant activity causing migration of all lubricant contaminants without interference with the die, meaning the removal of encapsulated abrasive particles prevents die wear, enabling wire frictionless drawing at much higher speeds and lower temperatures.

Applications include all plain carbon wires up to one per cent carbon and stainless steel alloy wires up to 26 per cent chromium, coated or uncoated, where the PDH high-performance specific anti-friction coat is about 8 to 15 microns thick, adjustable, largely sufficient to retain liberated abrasive particles from the wire surface.

PUBLISHED: 17 Mar 17 Bookmark and Share
Company:
Decalub
Country:
France
Tel:
+33 1 64 26 20 66
Fax:
+33 1 60 20 20 21
Email:
info@decalub.com
Website:
www.decalub.com
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