Degreasing treatment
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Oxygen-based stainless steel equipment requires degreasing treatment. 1. How is degreasing done? 2. Should the degreasing process be done before or after acid washing and passivation?
Carbon tetrachloride: debinding treatment after passivation
This post was last edited by xlxuiin on 2016-12-13 08:35. Degreasing is necessary in special situations, such as when a medium free of oil is required; oxygen pipelines and liquid oxygen pipelines also need to be degreased. In general, in the air separation industry and the gas industry, most pipelines and valves are required to be degreased. Common degreasing agents include propane, trichloroethylene, tetrachloroethylene, carbon tetrachloride, etc.! However, trichloroethylene, tetrachloroethylene, and carbon tetrachloride are all quite toxic; they are now generally banned. Trichloroethylene is used more frequently, as it provides adequate degreasing results. There are soaking, wiping, and cyclic rinsing methods for degreasing. To determine whether degreasing is successful, a grease detector is used. GB16912-2008 \"Safety Technical Regulations for the Production of Oxygen and Related Gases by Deep Freezing Method\"; HG20202-2000 \"Specifications for the Construction and Acceptance of Degreasing Projects\"
What was said upstairs is very comprehensive; I’ve learned from it.
De-fat before final closing. . . .