Liquid antirust agent used for water sandblasting rust removal process for railway vehicles
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A technology for a railway vehicle and a rust inhibitor, applied in the field of preparation of the liquid rust inhibitor, can solve problems such as being far from being adaptable, and achieve the effects of low cost, good rust prevention effect, and environmental protection and safety performance.
Inactive Publication Date: 2017-05-24
李芳
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Problems solved by technology
However, traditional metal antirust agents are far from suitable for railway vehicle mechanical automation due to the difficulty in maintaining good protection in humid and water mist environments, and the overlay or residues have adverse effects on the welding of steel structures during vehicle maintenance. The need for water blasting rust removal process
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Embodiment l
[0025] Small batches of liquid antirust agent for railway vehicle water sandblasting derusting process, the weight ratio of its components is: sodium tripolyphosphate 1.0kg, petroleum rare earth barium sulfonate 0.3kg, n-butylamine 1.0kg, 4kg。 Soda ash 0.2kg, OP emulsifier 0.lkg, water 7. 4kg.
[0026] Its preparation method is as follows:
[0027] 1) First weigh 1.0 kg of sodium tripolyphosphate, 0.3 kg of petroleum rare earth barium sulfonate, 1.0 kg of n-butylamine, 0.2 kg of soda ash, 0.1 kg of OP emulsifier, and 7.4 kg of water for later use.
[0028] 2) Then dissolve sodium tripolyphosphate, petroleum rare earth barium sulfonate and soda ash with a small amount of hot water at about 60°C.
[0029] 3) Then put the dissolved sodium tripolyphosphate, petroleum rare earth barium sulfonate and soda ash into the container containing the remaining water, add n-butylamine and OP emulsifier at the same time, and finally stir evenly with an air stirrer to obtain The liquid antir...
Embodiment 2
[0032] Large quantities of liquid antirust agent for water blasting and derusting process of railway vehicles, the weight ratio of each component is: sodium tripolyphosphate 180kg, petroleum rare earth barium sulfonate 80kg, n-butylamine 200kg, soda ash 30kg, OP emulsification Agent 10kg, water 1500kg.
[0033] Its preparation method is as follows:
[0034] 1) First weigh 180kg of sodium tripolyphosphate, 80kg of petroleum rare earth barium sulfonate, 200kg of n-butylamine, 30kg of soda ash, 10kg of OP emulsifier, and 1500kg of water for later use.
[0035] 2) Then add water into a container equipped with a heating and stirring device, and at the same time put sodium tripolyphosphate, petroleum rare earth barium sulfonate, n-butylamine, soda ash and OP emulsifier into the water, and then heat it to about 60°C .
[0036] 3) Stir it again until each component is completely dissolved, and then the liquid antirust agent of the present invention can be obtained. After testing, i...
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Abstract
The invention discloses a liquid antirust agent for metal surfaces, and particularly relates to a liquid antirust agent used for the water sandblasting rust removal process for railway vehicles, and a preparation method and application of the liquid antirust agent. The liquid antirust agent is composed of, by weight, 10%-15% of a main film forming agent, 5%-10% of an alkaline corrosion inhibitor, 10%-15% of an antirust agent, 2%-3% of an accelerant, 1%-1.5% of a surface active agent and the balance water. Tripolyphosphate is adopted as the main film forming agent, petroleum rare earth sulphonate is adopted as the alkaline inhibitor, organic amine is adopted as the antirust agent, and pure alkaline is adopted as the accelerant. The pH value of the liquid antirust agent mentioned above is controlled to be within the range between 10 and 15. During preparation, all the components are mixed with water to be stirred to be uniform according to the proportion. During use, the liquid antirust agent is diluted with water according to the weight ratio ranging from 1:2 to 1:3, and the mixture is used for spraying the surfaces of the railway vehicles subjected to water sandblasting rust removal processing; or, the liquid antirust agent is added in circulation water used for the water sandblasting rust removal process according to the weight ratio ranging from 1:8 to 1:10, and water sandblasting rust removal processing is directly conducted on the surfaces of the railway vehicles. The liquid antirust agent has the beneficial effects of being low in cost, safe, environment-friendly, good in antirust effect, good in welding performance, and the like, and is completely suitable for the antirust requirement of the automatic water sandblasting process of railway goods vans or ultra-large type structural member machines.
Description
technical field [0001] The invention relates to a liquid antirust agent for water blasting and derusting technology of railway vehicles, in particular to a preparation method and application of the liquid antirust agent. Background technique [0002] At present, in the maintenance process of railway vehicles such as railway wagons, the rust removal of the whole vehicle mostly adopts the traditional dry projectile or spraying process. Since this process has no intermediate protective measures, it is easy to cause secondary corrosion on the surface of the car body, and it is difficult to completely remove the residual rust and scale on the surface of the car body, so it has an unavoidable impact on the quality of the car body surface coating. Moreover, when using the traditional projectile or jetting process, with the prolongation of equipment use time, the pollution of dust to the environment will become more and more serious. [0003] With the continuous development of main...
Claims
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Application Information
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