Product quality testing device for different technological heating processes of hot-rolled steel billets

Abstract

The invention provides a product quality testing device for different technological heating processes of hot-rolled billets, and belongs to the technical field of steel heat treatment. The device comprises a precise multi-component gas distribution system, a double-plunger pump, a steam generator, a tubular resistance furnace and a temperature collector, wherein a high-pressure gas cylinder group is arranged at the front end of the precise multi-component gas distribution system, and the steam generator is arranged at the rear end of the precise multi-component gas distribution system; the double-plunger pump is respectively connected with deionized water and a liquid inlet of the steam generator; the steam generator is connected with the tubular resistance furnace; the sample is suspended in a tubular resistance furnace by a molybdenum wire; the measuring end of the thermocouple is contacted with the sample, and the other end is connected with the temperature collector; and the precise multi-component gas distribution system, the tubular resistance furnace and the temperature collector are connected with a computer. The device can meet the mixed distribution of various dry gases, and can also obtain the required wet mixed gas. The device is simple to operate, can meet various heating processes in the actual production process of the hot-rolled steel billets in a factory, and greatly reduces the test cost of different process heating processes of the hot-rolled steel billets.

Description

technical field [0001] The invention relates to the technical field of steel heat treatment, in particular to a product quality test device for hot-rolled billets in different process heating processes. Background technique [0002] In the production process of steel mills, steel products often need to undergo different heating processes for heat treatment after hot rolling into hot rolled billets to obtain qualified steel products. During the heating and heat treatment process of steel, due to the joint effect of heating temperature, holding time and heating atmosphere, some defects that affect the quality of steel often occur, such as oxidation and decarburization. In order to produce products with better quality, steel mills have to optimize the existing heat treatment process, or find a new heat treatment process. These two methods have to carry out a lot of tests, but the furnaces of the steel mills are very large. If the production furnaces of the steel mills are used...

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Problems solved by technology

In addition, in some existing laboratories, most of the product quality testing devices for hot-rolled steel billets in different heating processes can only heat-treat the samples in a single atmosphere, and the method of humidifying the atmosphere is basically to put dry gas in a water bath. The moisture content of the wet mixture obtained by this method is not very accurate

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