Heating treatment device used for Austenitic grain size carburization test and using method thereof

Abstract

The invention relates to a heating treatment device used for an Austenitic grain size carburization test and a using method thereof. The method comprises the following steps that (1) a carburizing catalyst is paved at the bottom of a tank body, activated carbon is paved above the carburizing catalyst and located below an air permeable partition plate, a plurality of samples are placed on the air permeable partition plate in a non-contact mode, and the top end of the tank body is covered with a sealing cover for sealing; and (2) the heating treatment device is placed into a box type resistance furnace, in a high-temperature state, CO2 decomposed by the carburizing catalyst reacts with the activated carbon, thus CO is compounded, a stable carbon potential atmosphere is formed on the peripheries of the samples through the air permeable partition plate, an atmosphere carburizing mode is simulated to form a carburizing layer, and the carburization test of the Austenitic grain size of the samples is completed. According to the heating treatment device used for the Austenitic grain size carburization test and the using method thereof, the carburization test of the Austenitic grain size can be achieved in the regular box type resistance furnace, test cost can be reduced, and test efficiency is improved; and the carburizing heating treatment quality is good, the carburizing layer is uniform, and the examination requirement of the carburization Austenitic grain size is met.

Description

technical field [0001] The invention relates to a heat treatment device and a use method thereof, in particular to a heat treatment device for austenite grain size carburization test and a use method thereof, and belongs to the technical field of heat treatment equipment for physical tests. Background technique [0002] Grain size is a measure of the size of metal grains. The grain size of metal materials has an impact on its processing performance, mechanical properties, physical properties, heat resistance and corrosion resistance. Therefore, in the analysis of metal properties, the estimation of grain size (that is, grain size) is very important. Among them, the detection of austenite grain size refers to the grain size measured after the steel material is kept at the austenitizing temperature for a period of time, which characterizes the grain growth trend of a certain steel, and the grain growth tendency It is very important to formulate heat treatment process. [00...

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Problems solved by technology

However, during the inspection process, since the laboratory is generally not equipped with professional carburizing furnace type heat treatment equipment, only ordinary box-type heat treatment resistance furnaces are available, and the operation price of this method is also very expensive

In addition, if the solid carburizing method is used, it will easily cause uneven carburization, making the sample partially carbon-free or carbon-poor, or even decarburized

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