Method for detecting cleanliness of hydrocarbon on surface of mechanical part

Abstract

The invention relates to a method for detecting the cleanliness of hydrocarbon on the surface of a mechanical part, and the method specifically comprises the following steps: S1, taking a first weighing vessel and a second weighing vessel, respectively infiltrating the first weighing vessel and the second weighing vessel with an organic solvent, sequentially drying, cooling and weighing, recording the weight of the first weighing vessel as M1, and recording the weight of the second weighing vessel as M4; s2, the organic solvent subjected to secondary filtration is added into a first weighing vessel, then drying, cooling and weighing are conducted, the weight of the first weighing vessel is recorded as M2, and the weight M3 of hydrocarbon remaining on the first weighing vessel is equal to M2-M1; and S3, taking the detected mechanical part, fully infiltrating the hydrocarbon by using an organic solvent, adding the hydrocarbon into a second weighing vessel, drying, cooling and weighing the second weighing vessel, recording the weight of the second weighing vessel as M5 at the moment, and determining that the weight M6 of the residual hydrocarbon on the surface of the detected mechanical part is equal to M5-M4-M3. Compared with the prior art, the detection period is shorter, the cost is lower, the detection precision is higher, and various complex organic hydrocarbons can be identified.

Description

technical field [0001] The invention belongs to the technical field of detection, and in particular relates to a method for detecting the cleanliness of hydrocarbons on the surface of mechanical parts. Background technique [0002] At present, the detection methods for the cleanliness of organic hydrocarbons (Hydrocarbon) remaining on the surface of mechanical parts on the market mainly rely on relatively rough methods for judgment, such as water film rupture method, UV ultraviolet detection method, etc. These methods cannot be used for many Quantitative detection of a complex residue, that is, it is almost blank for a variety of complex organic hydrocarbon residues on the surface of parts that require accurate quantitative detection. [0003] In the field of high-end medical equipment, especially the core components of the high-pressure oxygen circuit, the working conditions of the parts are high-pressure and high-oxygen. The residual value requirements are very stringent....

AI Technical Summary

Problems solved by technology

Once the organic hydrocarbons in the high-pressure oxygen circuit exceed the standard, it is very likely to cause a serious medical accident such as oxygen deflagration during use, which seriously threatens the lives of medical staff and patients.

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