Many rains in summer can easily cause corrosion of agricultural machinery. If it is not removed in time, it will affect the service life of agricultural machinery. Here are some common methods for derusting agricultural machinery:
First, manual rust removal method. Remove rust with hand tools such as iron sandpaper, spatula, blade, and wire brush. This method has great labor intensity and low production efficiency, but it is easy and flexible to operate.
Second, mechanical rust removal method. The use of mechanical power shock and friction to remove rust, the most commonly used mechanical wind brush, derusting gun, electric brush and so on. Small steel parts can be loaded into wooden barrels containing yellow sand, moving at a speed of 40 to 60 revolutions per minute, and rust removed by impact friction.
Third, chemical rust removal method. Pickling method is usually formulated with sulfuric acid ammonia 1:20 ~ 1:25 ammonia solution of sulfuric acid, poured in a ceramic tank, the rust of agricultural machinery parts placed inside the bubble for 24 hours after the rust will float in the water. Remove the parts and clean the rust with a cloth. Rinse with clean water. After drying, apply lime milk or anti-rust oil to prevent rust.
Fourth, the flame rust method. Oxidation of the acetylene burner heats the steel and causes its scale to fall off. Mainly used for large castings such as harvester accessories, but can not be used for thin steel and small castings, otherwise the workpiece will affect the quality due to thermal deformation.
Fifth, vinegar rust removal method. When the rusted small farm implements are soaked in vinegar until the rust layer is easily peeled off, remove them with a fine steel wire brush, grind them, brush the rust layer, and put them in the vinegar to soak for a moment. Take out the surface of the tool with gauze. Clean, dry with lime milk or Vaseline.
Six, baking soda rust removal method. Use a large cylinder to hold Taomi Shui or wash pot water, the amount of water is limited to submerging small farm tools, then add 50 kg of water, add baking soda 60 to 90 grams to make a solution, stir with a wooden stick, put the rusty small The farm implements are soaked in the tank and removed after one week. After the wipe is applied, a layer of lime paste or Vaseline is applied.
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