Gear metering pump cleaning method

[Asia pump network] gear pump pump removed after baking to clean the internal residual melt. Currently used two kinds of roasting method, disassemble roasting and overall roasting. Although the former operation of the latter some trouble, but roasting time can be greatly reduced, and not easy to burn the pump. Therefore, most of the use of open roasting. Gear metering pump cleaning methods Roasting furnace resistance furnace and salt bath furnace two. 1. Box resistance furnace roasting: remove the pump from the car, remove the coupling while still hot, loosen the screws, so that the pump plate about 2 mm apart, side on the furnace. After baking in the air slowly coated, can not be tired to prevent deformation or crack. After cooling, the pump is immersed in gasoline, brushing the surface carbide with a nylon brush. The unwashed surface with M14 alumina abrasive preparation of the grinding agent in the grinding plate a little grinding, hole and tooth surface carbide remaining on the grinding rod or whetstone gently rub clean. 2. Salt bath furnace roasting: The pump first in the box-type resistance furnace preheated to 300 ℃, loosen the pump plate screws. Then add sodium nitrite 55% of the 400 ~ 450 ℃ salt bath furnace roasting l ~ 3 hours, remove the air slowly Sui Tu to 150 ℃, then boiled in boiling water for half an hour, remove and cool to room temperature. Salt Law applicable to large quantities, the operation is more troublesome. Resistance furnace roasting is currently more common, but the spin-on, the temperature is not enough uniform. (Editor: Xiaoxia QQ:) Recommended reading: 2017 exhibition information

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