Cooling liquid for internal combustion locomotive
A technology for diesel locomotives and coolants, which is applied in the field of coolants and can solve problems such as the influence of locomotive operation and leakage of cooling medium
Inactive Publication Date: 2020-08-21
METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI +2
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- Abstract
- Description
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- Application Information
AI Technical Summary
Problems solved by technology
In the cooling system of the internal combustion engine, the welding of the cooling single section is often caused by this, and the cooling medium leaks, which affects the operation of the locomotive
Method used
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Experimental program
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Effect test
Embodiment 2
[0042]
[0043] Test piece mass change value mg / piece Copper -0.5 solder -3.6 brass -0.7 carbon steel -0.7 cast iron -1.3 cast aluminum +1.8
Embodiment 3
[0045]
[0046]
[0047] Test piece mass change value mg / piece Copper -0.8 solder -4.1 brass -0.5 carbon steel +1.2 cast iron +1.0 cast aluminum +2.0
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The invention provides a cooling liquid for an internal combustion locomotive. The cooling liquid is composed of, by weight, 0.1-5% of borax, 0.001-1% of an azole compound, 0.1-5% of nitrite, 0.01-1%of nitrate, 0.001-0.5% of a mercaptobenzothiazole derivative, 0.1-4% of silicate, 0.001-0.2% of a dispersion scale inhibition stabilizing agent, and the balance of deionized water. The cooling liquidfor the internal combustion locomotive can effectively protect aluminum and soldering tin materials which are most likely to be corroded in a cooling system, and the galvanic corrosion problem of copper and welding flux is solved.
Description
technical field [0001] The invention belongs to the technical field of cooling liquid, and in particular relates to a cooling liquid for diesel locomotives. Background technique [0002] Coolant is the cooling medium of the engine's circulating cooling system. It is a complex multi-component system. An excellent coolant should have the functions of heat dissipation, corrosion resistance, scale prevention and foam prevention. The coolant widely used at home and abroad is water-ethylene glycol system based on ethylene glycol. At high temperature, the action of ethylene glycol and dissolved oxygen is easy to generate various acidic and corrosive substances, which will accelerate the corrosion of metals. The radiator is mainly made of non-ferrous metals such as brass, red copper, solder, etc. Ordinary coolants have serious corrosion on the radiator, which greatly shortens the service life of the internal combustion engine. [0003] At present, for the protection of non-ferrous ...
Claims
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IPC IPC(8): C09K5/20C23F11/08
CPCC09K5/20C23F11/08
Inventor 魏曌贾恒琼吴韶亮张恒李海燕杜玮王涛伊钟毓王玮
Owner METALS & CHEM RES INST CHINA ACAD OF RAILWAY SCI