Assertion: process lubricant | /r/ObjectUse | used for the ironing operation
Facets:
Source sentences:
text: Residual oils are present on most sheet surfaces from prior rolling and fabricating operations; an additional process lubricant is used for the drawing operation; a third process lubricant is used for the ironing operation; and yet another lubricant, namely the mechanical or hydraulic lubricant associated with the presss equipment, may, at least in part, become inadvertently mixed with the process lubricants.