Apparatus and method for detecting fish-scaling resistance of steel for enamel based on principle of micro-differential pressure

A detection device, micro-differential pressure technology, applied in the direction of material electrochemical variables, etc., can solve the problems of expensive liquid level detection device, affecting the accuracy of the grating sensor to capture the liquid level, etc., to achieve the effect of convenient and instant inspection and storage

Inactive Publication Date: 2016-04-13
SHANGHAI INST OF TECH
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  • Abstract
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Problems solved by technology

However, the problem with this method is that the liquid level detection device is expensive. In addition, the color depth of the colored liquid in the capillary and the light intensity will affect the accuracy of the grating sensor to capture the liquid level.

Method used

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  • Apparatus and method for detecting fish-scaling resistance of steel for enamel based on principle of micro-differential pressure
  • Apparatus and method for detecting fish-scaling resistance of steel for enamel based on principle of micro-differential pressure

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Such as figure 1 As shown in Fig. 1, a scale explosion resistance testing device for enamel steel based on the principle of differential pressure is composed of a testing part, a power supply part, an experimental part and a steel material sample to be tested.

[0027] The test part consists of a control cabinet 1, a computer 2, a differential pressure sensor 3, and a digital display touch screen 4, and the power supply is a DC constant current and constant voltage instrument 5. The experimental part consists of silicone tube 6, platinum electrode 7, thermometer 8, rubber plug 9, hydrogen evolution tank 10, epoxy resin plate fixing clip 11, hydrogen expansion tank 13, rubber plug 14, hydrogen diffusion liquid injection pipe 15, and hydrogen diffusion liquid outlet Pipe 16, fastening bolt 17 constitute.

[0028] The hole wall of the hydrogen exp...

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Abstract

The invention relates to an apparatus and method for detecting fish-scaling resistance of steel for enamel based on principle of micro-differential pressure. A hydrogen evolution groove and a hydrogen diffusion groove are respectively arranged at the upper side and the lower side of a steel sample to be measured; a hole wall of the hydrogen diffusion groove is provided with a hydrogen diffusion liquid charging tube and a hydrogen diffusion liquid discharging tube; a thermometer is placed in the hydrogen evolution groove by a rubber stopper; a platinum electrode is placed in the hydrogen evolution groove through the rubber stopper, and the platinum electrode is connected to an anode of a DC constant-current constant-voltage instrument by a lead; the steel sample to be measured is connected to a cathode of the DC constant-current constant-voltage instrument by a lead; the hydrogen diffusion liquid discharging tube is connected to a micro-differential pressure sensor by a silica gel tube; the micro-differential pressure sensor is connected to a computer, and the computer connects a digital display touch screen. Computer data processing and the digital display touch screen are combined for facilitating instant inspection and storage of detection data, and visually displaying relation of hydrogen evolution quantity and time change.

Description

technical field [0001] The invention relates to a detection device and method for the anti-scale explosion performance of enamelled steel, in particular to a detection device and method using the principle of differential pressure. Background technique [0002] During the production of enamel products, hydrogen from the steel plate, enamel, enamelling process, etc. dissolves into the steel plate in the form of atoms and diffuses in the steel plate. Only a small part of the hydrogen is absorbed by the holes, gaps, and dislocations in the steel. , segregation, inclusions and other defects are trapped, most of the atomic hydrogen diffuses into the interface between the porcelain layer and the metal, and gathers in the form of hydrogen molecules. When the interface pressure formed by the accumulation of a large amount of hydrogen reaches the critical value of destroying the porcelain layer, it will It will cause scale bursts in the shape of crescent moon and fish scale on the su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/42
CPCG01N27/42
Inventor 徐春饶德怀葛玉静
Owner SHANGHAI INST OF TECH
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