(1) Concentration. The high concentration of the lubricant improves its lubrication effect. The friction coefficient between the metal wire and the die hole wall is small, the corresponding friction force is also reduced, and the tensile force decreases. However, if the concentration is too high, the viscosity of the lubricant will also increase, and its flushing effect will be reduced. The metal chips in the die hole are not easily taken away, resulting in poor surface quality of the wire. If the concentration is too high, the metal chips will not precipitate and will be suspended in the lubricant, which will affect the lubrication effect.
(2) Temperature. The temperature of the lubricating fluid is too high and loses its cooling effect, which causes the temperature of the metal wire and mold to rise, the wire is oxidized and discolored, and the mold life is reduced. It also affects the strength of the grease lubricating film and reduces the lubricating effect. If the temperature is too high, the viscosity of the lubricant will rise, which is not conducive to stretching.
(3) Cleanliness. Acid substances mixed into the lubricant will cause the lubricant to stratify and lose its lubricating effect. The increase in the alkali content in the lubricant will cause corrosion hazards to the stretched metal wire. There are solid impurities in the lubricant, which affect the lubrication system of the equipment, resulting in insufficient supply of lubricating fluid, and reducing the role of the lubricant.