guangxi cable news: the importance of ph value of drawing oil
from：guichao author：admin click： 339 addtime：2017-04-11 12:17:56
the ph value of the drawing oil is usually decreased during use,
the decrease of ph value can cause the rust of drawing oil, and the antibacterial ability is poor.
when the concentration meets the requirements, ph value is not up to the specified value,
triethanolamine in time,
sodium carbonate, etc. to improve the ph value of the working fluid and control it within the prescribed range.
the reason for the decrease of rust resistance is the consumption of anti rust agent and the decrease of ph value,
bacterial propagation, low concentration of drawing oil,
to solve these problems,
such as excessive consumption of rust preventive agent,
can also be added in the drawing oil working fluid rust inhibitor.
the percentage concentration and ph value of wire drawing oil is tested once a day,
the stability of the oil can be ensured by the concentration stability,
therefore, regular replenishment of new copper wire drawing oil,
ph value stable at 7 to 8.
when the ph value is less than 7, the oil and water in the drawing oil can be separated,
a certain amount of low concentration ph can be added to adjust the dosage.
however, the high ph value will produce soap tendency,
cause cone and die unclean,
lubrication performance of wire drawing oil decreased.