1： the appearance of water quality colorless, no odor, no suspended matter and mechanical impurities; The pH value range is 6-9, the chloride ion content in water is not more than 200mg/L; The content of root ions is not more than 400mg/L.
2： the hydraulic support emulsion oil preparation concentration according to the provisions of 5% (mass ratio), the concentration is too low will reduce the resistance to hard water, reduce rust resistance, stability and lubricity. If the concentration is too high, it will reduce the defoaming ability and increase the swelling of the rubber material.
3： the preparation of emulsion to preheat the emulsion oil to 40℃ is appropriate, especially in winter must first preheat and then match the liquid.
