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Parameter analysis method and device for wetting clay sand quality for casting

A technology for wet clay sand and quality parameters, which is used in measuring devices, analyzing materials, and material analysis by electromagnetic means, which can solve the problems of complex test procedures and long test cycles.

Inactive Publication Date: 2005-03-30
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the shortcomings of the existing clay sand detection methods, such as long test period and complicated test procedures, a method and device for rapid analysis of quality parameters of green mold clay sand for foundry are provided

Method used

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  • Parameter analysis method and device for wetting clay sand quality for casting
  • Parameter analysis method and device for wetting clay sand quality for casting
  • Parameter analysis method and device for wetting clay sand quality for casting

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specific Embodiment approach 1

[0006] Specific implementation mode one: the following combination Figure 1 to Figure 5 and Figure 18 This embodiment will be specifically described. The present invention is realized by the following scheme: a method for quickly analyzing the quality parameters of green mold clay sand for casting, which is completed by the following steps: one, making a sample block of the clay sand to be tested; two, passing through the sample block with alternating current And measure the AC conductivity of the sample block; 3. Pass a direct current in the sample block and measure the initial DC conductivity and the rate of change of the DC conductivity of the sample block; 4. Measure the temperature of the sample block and the tightness of the sample block 5. Input the measured AC conductivity, initial DC conductivity, DC conductivity change rate, temperature and compaction rate of the sample block into the computer database. The database is based on the sample block AC conductivity, in...

specific Embodiment approach 2

[0025] Specific implementation mode two: the following combination Figure 6 to Figure 1 6 and FIG. 19 specifically describe this embodiment.

[0026] This embodiment consists of a mechanism frame 1, a sand screening motor 2, a sand screening cylinder 3, a screen 12, a funnel 4, two funnel connecting rods 5, an auxiliary cylinder 6, a longitudinal bottom guide rail 7, a sample cylinder bottom plate 8, a trolley 9, Small wheel 9-1, sample cylinder support 11, sample cylinder 13, sample cylinder 14, lateral sliding guide rail 15, rolling element 17, bottom plate cylinder 18, cylinder cylinder 19, trolley moving cylinder 20, compaction cylinder 21, Displacement sensor 22, air permeability detection cylinder 23, air permeability detection device 29, No. 1 pressure sensor 24, No. 2 pressure sensor 16, load cell 26, strength detection cylinder 27 form. A left sand level electrode 6-1 and a right sand level electrode 6-2 are fixed on the inner wall of the auxiliary cylinder 6, and a...

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Abstract

The invention belongs to a quick analysis method of wet-type clay sand quality parameters for casting and its equipment. In particular it relates to a method for detecting effective clay content, water content, air permeability and comprehensive strength of wet-type clay sand and its equipment. Said method is characterized by that applying AC power supply and DC power supply to standard sand sample at twice successively to make excitation, and utilizing measured sand sample AC conductive capability, initial AC conductive capability, AC condutive capability change rate and other information parameters obtained in the sample-making process to solve the effective clay content and water content, and can obtain tested result within few seconds. Said equipment includes sand sample barrel, strength detection cylinder, piston rod and weighing sensor, etc.

Description

Technical field: [0001] The invention relates to a testing method for effective clay content and water content of green clay sand in modern casting, and also relates to a detection device for multiple quality parameters such as effective clay content and water content, air permeability and comprehensive strength of green clay sand. Background technique: [0002] Green clay sand is the most widely used molding material in the foundry industry today, and the effective clay content and water content are important factors affecting the performance of the molding sand. At present, due to the lack of rapid detection means, the effective clay content of molding sand cannot be measured online, which directly affects the optimal control of the quality of green clay sand. At home and abroad, the methylene blue titration method has been widely used to directly measure the effective clay content of molding sand or to indirectly characterize the effective clay content by using the compac...

Claims

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Application Information

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IPC IPC(8): G01N25/18G01N27/00G01N27/02G01N33/38G01N35/00
Inventor 李大勇董静薇石德全张宇彤高继伟
Owner HARBIN UNIV OF SCI & TECH
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