What is the implementation standard of hydraulic support oil?
January 15, 2022
Emulsion products used for hydraulic supports in underground coal mine production are stored and recovered by emulsified oil tank containers. Products usually prepared with on-site water. According to the definition, emulsified oil can be uniformly dispersed in water to form the "oil" of an oil-in-water emulsion, which is generally composed of mineral oil and water, emulsifiers, rust inhibitors, lubricants and other additives Composition: Concentrate, a liquid substance that can be dissolved in water to form a solution diluent, generally composed of water, water-soluble rust inhibitor, Corrosion Inhibitor, lubricant and other additives.
At present, the domestic support fluid products implement the latest coal industry MT76-2011 standard "Emulsified oil, concentrate and high water-containing hydraulic fluid for hydraulic supports", which is suitable for hydraulic supports, external injection single-injection hydraulic props and other high-water hydraulic fluids. The emulsified oil and concentrated liquid used to prepare the hydraulic fluid are divided into two categories according to the type of high water-containing hydraulic fluid: emulsified and concentrated fluid. Each type of product is divided into 8 grades according to the highest hardness of the applicable water quality when used. The codes are 5, 10, 15, 20, 25, 30, 35, 40, etc. The highest hardness corresponding to each grade is 250μg/g, 500μg/g, 750μg/g, 1000μg/g, 1250μg/g, 1500μg/ g, 1750μg/g, 2000μg/g, etc. The product model is arranged as H FA× ××-× according to GB/T 7631.2, where: H means hydraulic fluid, FA× means hydraulic fluid type with high water content, FAE means emulsified oil, FAS means concentrated liquid, and ×× means water hardness Grade, × represents the mass percentage of the concentration used. For example: Great Wall brand HFAE15-4 emulsified oil for hydraulic supports produced by Sinopec Lubricant Co., Ltd. HFAE 15-4 represents emulsified oil for hydraulic supports. ).
