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Popular science knowledge: how to identify the quality of agricultural machinery oil
Popular science knowledge: how to identify the quality of agricultural machinery oil
[China Agricultural Machinery Industry News Network confidential agricultural development, agricultural oil is essential, but how can we identify good and bad agricultural oil is one of the issues people worry, let's look at science, how to identify the quality of agricultural oil.
The quality of agricultural machinery oil directly affects the service life of agricultural machinery. Identifying the quality of oil products can be roughly divided into four steps:
1. Look: Look at the appearance of the oil. Different types of oils have different color appearances. Careful observation of the appearance of the oil, the color is light, mostly light fractions and deep refined oil, deep color, mostly residual oil residue, oil with low degree of refinement, or oil of heavy fraction .
2, smell: smell the smell of oil. The smell of oil is generally divided into gasoline, kerosene, diesel, alcohol, aromatic, sour and so on. The oil added with the additive has a certain sour taste; the oil with alcohol content has an alcoholic taste; the light solvent oil has an aromatic taste.
3. Shake: Observe the thickness of the oil after shaking. The oil is shaken in a colorless glass bottle, and the oil film hanging condition and the occurrence and disappearance of the bubble are observed, so that different grades of the oil can be basically distinguished. Oil with low viscosity produces more bubbles, rises faster, disappears faster, and hangs less bottles; oil with higher viscosity produces less bubbles, slower ascent, and slower to disappear, but more oil-hanging bottles.
4, touch: used to touch the soft and hard condition of the oil and smooth. The refined oil hand mold has a smooth feeling, and the poorly refined oil has a poor smoothness. The degree of grease and hardness can be roughly divided into different grades. The number is small and the number is relatively soft.