A detection device and method for detecting smoke released during core making or casting of coated sand

Abstract

The invention relates to the technical field of foundry industry, in particular to a detection device and method for detecting smoke released during core making or casting of coated sand. Among them, the detection equipment for releasing smoke during core making or casting of coated sand provided by the present invention includes a smoke generator and a smoke circulation device, the smoke generator and the smoke circulation device are connected by pipelines to form a closed circuit, and at the same time A gas sensor is installed on the pipeline, and the coated sand is heated in the flue gas generator to simulate the environment of core making and casting. Compared with the method of measuring the composition and concentration of flue gas with a spectrophotometer, the device provided by this application is more comprehensive, accurate and efficient in measuring the composition and concentration of flue gas; in addition, the pipeline is driven by the flue gas circulation device The flue gas in the pipeline circulates, the concentration of the flue gas in each part of the pipeline is uniform, the measurement result is more accurate, and the measurement efficiency is higher.

Description

technical field [0001] The invention relates to the technical field of foundry industry, in particular to a detection device and method for detecting smoke released during core making or casting of coated sand. Background technique [0002] With the continuous and in-depth development of the green process of the foundry industry, the environmental protection characteristics of the existing foundry auxiliary materials are also constantly challenged. The coated sand has good low odor under the condition of core making temperature and the generation of harmful smoke during high temperature casting. rate, which can improve the working environment of workers in the core making workshop and casting workshop; it can reduce the amount of gasification of harmful volatiles on the basis of meeting the requirements of the existing core making process, so as to reduce the pollution to the environment. [0003] Coated sand usually releases ammonia, formaldehyde, phenol and other harmful s...

AI Technical Summary

Problems solved by technology

[0003] Coated sand usually releases ammonia, formaldehyde, phenol and other harmful substances in the process of core making or casting. These harmful substances volatilize into the air, causing harm to the health of workers and seriously polluting the environment; During the core-making process, the residual harmful substances on the coated sand will further volatilize, which will affect the yield of castings and cause serious pollution to the environment, especially nitrogen oxides. Excessive emissions will cause photochemical smog, which will eventually harm human health

[0004] At present, for the quality of coated sand, the general concern is the strength, gas generation, ignition loss and other indicators of the coated sand. There is no effective detection method for the characteristics of the smoke released during the core making process. Some resin factories use the Pass the flue gas into the water for absorption, and then use the method of spectrophotometer to test the content of ammonia and formaldehyde phenol

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