Method and device for detecting apparent porosity of artificial sand

Abstract

The invention discloses a method and device for detecting the apparent porosity of artificial sand, comprising a measuring cylinder with a plug and a cover, and a vacuum chamber capable of placing the measuring cylinder in a vacuum environment. Pipeline, the liquid measuring pipeline enters the vacuum chamber and extends to the upper end of the measuring cylinder; the measuring liquid pipeline is connected with an air filter; the vacuum chamber is also equipped with an emptying valve, which constitutes a set that can keep the sample in the atmospheric pressure environment and the low pressure environment. The measurement device for absorbing water separately, and the detection method was designed in conjunction with it. The beneficial effect of this scheme can be known from the description of the above scheme. The design is simple and reasonable, and can effectively and accurately detect the apparent porosity of artificial sand, thereby providing an objective and feasible method for more comprehensive evaluation of artificial sand casting process performance. The technical methods and means can also be used to detect the apparent porosity of other granular materials.

Description

technical field [0001] The invention relates to the technical field of casting under the subject of mechanical manufacturing and automation, in particular to a method and device for detecting apparent porosity of artificial sand. Background technique [0002] Sand casting is the main process of casting production, and the castings produced by sand casting process account for more than 80% of the total output of castings. Sand is the aggregate that forms the mold and core in sand casting. It is an important molding material for sand casting. Its physical and chemical properties determine its casting process performance and affect the quality of castings. The raw sand used in sand casting in the foundry industry is mainly quartz sand, but due to its high thermal expansion and poor thermal and chemical stability under the action of metal oxides, castings are prone to casting defects such as sticky sand, veins, and rough surfaces. Therefore, quartz sand Not an ideal molding mat...

AI Technical Summary

Problems solved by technology

Special sand resources are short, expensive, and difficult to use in large quantities, and zircon sand has radioactive safety hazards, and chromite sand and forsterite sand have problems such as poor grain shape and high breakage rate

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