Cavitation corrosion resisting coolant used for heavy-duty engine and preparing method thereof

Abstract

The present invention relates to a cavitation corrosion resisting coolant used for heavy-duty engine, wherein the cavitation corrosion resisting coolant comprises the following components by weight: 10-90 parts of soft water, 10-90 parts of glycol, 0.1-1.4 parts of sodium borate, 0.3-2 parts of sodium benzoate, 0.2-2.5 parts of sebacic acid, 0.08-1 part of iodine arsenide, 0.2-3 parts of benzotriazole, 0.03-0.4 part of sodium molybdate, 0.04-0.4 part of sodium nitrite, 0.05-0.5 part of sodium hydroxide, 0.05-0.5 part of corrosion resisting stabilizing agent, 0.005-0.05 part of antifoaming agent and 0.001-0.01 part of colorant. The method of the invention comprises the following steps: (1) adopting a reaction still with mixing function in normal temperature, placing the soft water into the reaction still according to the ratio; (2) adding glycol according to the amount, mixing until the time when the glycol is totally dissolved; (3) weighting the sodium borate, sodium benzoate, sebacic acid, iodine arsenide, benzotriazole, JN-4 corrosion resisting stabilizing agent, sodium molybdate, sodium nitrite, sodium hydroxide, antifoaming agent and colorant, mixing for preparing a complexing agent; (4) adding the complexing agent into the reaction still and mixing to uniform; and (5) checking the freezing point, boiling point, pH value and color of coolant routinely, and then filtering and filling. The cavitation corrosion resisting coolant of the invention has the advantages of simple preparing and remarkable effect.

Description

technical field [0001] The invention relates to an engine coolant and a preparation method thereof, in particular to an anti-cavitation corrosion coolant for a heavy-duty engine and a preparation method thereof. Background technique [0002] In the 20th century, construction machinery has been continuously strengthened, and the increase in the average effective pressure of the piston has increased the temperature and vibration of the engine. Some engineering or transport machinery engines used under non-road conditions have been operating at close to rated power for a long time. The engine is defined as a heavy-duty engine in accordance with ASTM D 4985-05 "Heavy Duty Engine Low Silicate Glycol Coolant". [0003] Due to the harshness of heavy-duty engine design, mechanism, material and operating conditions, the coolant used in it has higher requirements than ordinary light-load engines. In order to dissipate heat and facilitate maintenance, the heavy-duty engine uses a wet ...

AI Technical Summary

Problems solved by technology

[0004] At present, the commonly used coolant in China is produced according to the China Petrochemical Industry Standard SH / T0521-1999 "Glycol Type Antifreeze for Automobiles and Light-duty Engines", so it cannot meet the harsh operating requirements of heavy-duty engines.

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