Liquid antirusting agent used in railway vehicle water sandblasting antirusting process as well as preparation method and application thereof
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A technology of railway vehicle and antirust agent, which is applied in the direction of metal material coating process, etc., can solve the problems that are far from adaptable, and achieve the effects of low cost, improved paint coating quality and good antirust effect
Active Publication Date: 2011-04-13
CRRC YANGTZE CO LTD
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Description
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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
Method used
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Embodiment 1
[0025] Small batch of liquid antirust agent for water blasting and derusting process of railway vehicles, the weight ratio of each component is: sodium tripolyphosphate 1.0kg, petroleum rare earth barium sulfonate 0.3kg, n-butylamine 1.0kg, soda ash 0.2 kg, OP emulsifier 0.1kg, water 7.4kg.
[0026] Its preparation method is as follows:
[0027] 1) First weigh 1.0kg of sodium tripolyphosphate, 0.3kg of petroleum rare earth barium sulfonate, 1.0kg of n-butylamine, 0.2kg of soda ash, 0.1kg of OP emulsifier, and 7.4kg 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 antirust agent...
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 liquid antirusting agent used in a railway vehicle water sandblasting antirusting process as well as a preparation method and an application thereof. The liquid antirusting agent comprises the following components by weight percent: 8-10% of main film-forming agent, 3-5% of alkaline corrosion inhibitor, 5-10% of antirusting agent, 1-2% of accelerating agent, 0.5-1% of surface active agent and the balance water, wherein the main film-forming agent is tripolyphosphate, the alkaline corrosion inhibitor is oil rare earth sulfonate, the antirusting agent is organic amine and the accelerating agent is calcined soda. In the preparation process, each component is evenly mixed with water according to the ratio. When in use, the liquid antirusting agent is diluted with water at the ratio of (1:2)-(1:3) and is used for spraying the surface of railway vehicles subject to water sandblasting antirusting; or the liquid antirusting agent is added to the circulating water used in the water sandblasting antirusting process at the weight ratio of (1:8)-(1:10) and is directly used for carrying out water sandblasting antirusting on the surface of the railway vehicles. The liquid antirusting agent is characterized by low cost, safety, environmental friendliness, favorable antirusting effect, excellent welding performance and the like, and fully meets the requirements of the mechanical and automatic water sandblasting process of the railway vehicles or ultra large structures.
Description
technical field [0001] The invention relates to an antirust agent for metal surfaces, in particular to a liquid antirust agent for water blasting and derusting technology of railway vehicles, and a preparation method and application of the liquid antirust agent. Background technique [0002] In the maintenance process of railway vehicles such as railway wagons, the traditional dry blasting or spraying process is mostly used for derusting the whole vehicle. 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 continu...
Claims
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Application Information
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