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SKF bearing alloy casting

Date锛2013-11-08 11:35:53

SKF bearing alloy must be cast on the shaft Waki ​​body to normal use. Since different bearing materials used, the viscosity and the SKF Bearings have different capacities, tenacity and strength is the ability bronze, mild steel, cast steel, cast iron in order to reduce. For sticky and less capable of material that can be processed in the bearing surface of the dovetail or drill some holes to increase the bonding strength of nowhere.
1, clearing bush
Casting alloy bearing pad surface is clean, it greatly affects the quality of its combination with the alloy. Bush must be clean. Available oxide abrasive dirt, wire brush, sand blasting and other methods to clear. Oil available 80 ℃ - 90 ℃ caustic soda solution, rinse ten minutes, with 80 ℃ - 100 ℃ hot water, remove the drying. Bearing corrosion is severe, with 10-15% sulfuric acid or dilute hydrochloric acid wash for 5-10 minutes, then add hot water rinse, and then rinse in cold water and dried.
2, tinned
   After clearing bush, the first layer of tin-plated, it will give the bearing and alloy sticky and firm.
Tin on the pot will be heated to 420 ℃, spacing about 1 hour in the pot Sprinkle a layer of oxide ammonium solution for keeping tin pure oxygen.
3, tinned methods
a rubbed France: a large bush, to preheated 260 ℃ - 300 ℃ (available electric stove, gas heating, etc.), and then coated with a co-solvent (co-solvent is zinc oxide and 50-50% saturated ammonium chloride solution), and then rubbed on the tin in the bush, with hemp or bamboo, wood tin coated evenly.
b Soldering Method: Small bush, preheated 110 ℃ - 150 ℃, coats cosolvent, and then heated to 200 ℃, and then into the tin pot tin.

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