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Probe for quick tester of hydrogen content in aluminium alloy melt and manufacturing method thereof

A technology for rapid measurement of aluminum alloy melts, applied in the field of metallurgy and casting, can solve the problems of inability to meet the needs of rapid detection and adjustment on the production site, small and medium-sized enterprises cannot use it for a long time, and the supporting probes are expensive, etc., and achieve high yield , Ease of processing, and the effect of improving the degree of hardening

Inactive Publication Date: 2012-09-05
HARBIN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Among the currently used hydrogen measuring devices, most domestic hydrogen measuring instruments have a long test cycle, which cannot meet the needs of rapid detection and rapid adjustment on the production site
However, although imported hydrogen measuring instruments are superior to domestic instruments in terms of testing speed, the supporting probes are expensive, and most small and medium-sized enterprises cannot afford to use them for a long time.

Method used

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  • Probe for quick tester of hydrogen content in aluminium alloy melt and manufacturing method thereof
  • Probe for quick tester of hydrogen content in aluminium alloy melt and manufacturing method thereof
  • Probe for quick tester of hydrogen content in aluminium alloy melt and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for manufacturing a probe for a rapid detector of hydrogen content in an aluminum alloy melt, the method comprising the steps of:

[0023] a. Take 16 parts of 150-mesh silicon carbide, 5 parts of bentonite, 2 parts of aluminum oxide powder, 1 part of copper oxide powder, and 4 parts of gypsum powder in the same crucible according to the ratio of parts by weight and stir well, then add 7 parts of water part, stir the mixture evenly to make it have certain humidity and strength. Probe raw material required for each probe according to the actual mold volume;

[0024] b. Put the weighed raw material of the probe into the mold and compact it;

[0025] c. Take out the probe, after drying at room temperature, completely immerse the probe head in phosphoric acid for 3 to 4 minutes:

[0026] d. After the pickling probe is completely dry, it can be fired at high temperature.

Embodiment 2

[0028] In the method for manufacturing a probe for a rapid detector of hydrogen content in an aluminum alloy melt described in Example 1, the high-temperature firing process described in step d is as follows: heating the probe in the furnace from room temperature to 300° C., and keeping the temperature for 30 minutes, Continue to heat up to 800°C, keep the temperature for another 30 minutes, and then cool down to 200°C with the furnace.

Embodiment 3

[0030] The mold structure used for pressing the probe is as follows: figure 1 shown. The pressing process of the probe is as follows: first, place the accessory 2 on the accessory 3, put the weighed material into the accessory 2 and make it firm. Press fitting 1 together with the metal conduit from the top of fitting 2, and rotate while pressing. In order to prevent the material from being pressed into the inner hole of the catheter, it is necessary to pre-thread an iron wire in the tube. The length of the iron wire passing through the top of the metal tube is 5 to 6mm. After the pressing action is completed, the iron wire is taken out. The mechanism for pressing the probe is as figure 2 As shown, the upper extrusion surface is rigidly connected with the frame, and the lower extrusion surface can move up and down in the vertical direction through the slide rail of the frame, and then the pressure is applied by the jack to squeeze the mold located between the two extrusion s...

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Abstract

The invention discloses a probe for a quick tester of hydrogen content in an aluminium alloy fusant and a manufacturing method thereof. In the hydrogen measuring device used at present, a hydrogen gauge probe has the problems of long measuring period and high price. The manufacturing method of the invention comprises: a, according to parts by weight, 16 parts of silicon carbide with 150 meshes, 5parts of bentonite, 2 parts of powdery alumina, 1 part of powdery copper oxide and 4 parts of gypsum powder are put into the same crucible to be evenly and fully stirred, 7 parts of water are added, and the mixture is evenly stirred to form a probe raw material; b, the weighed probe raw material is loaded into a die to be compacted and shaped; c, the probe is taken out and is dried at room temperature, and then the probe head is completely dipped into phosphoric acid for 3-4 minutes; and d, after being totally dried, the probe dipped in acid is baked at high temperature. The probe of the invention is a mating device for quickly measuring the hydrogen content in the aluminium alloy fusant.

Description

Technical field: [0001] The invention relates to the fields of metallurgy and casting, and in particular proposes a new probe for a rapid detector of hydrogen content in an aluminum alloy melt and a manufacturing method thereof. Background technique: [0002] Among the currently used hydrogen measuring devices, most domestic hydrogen measuring instruments have a long test cycle, which cannot meet the needs of rapid detection and rapid adjustment on the production site. However, although imported hydrogen measuring instruments are superior to domestic instruments in terms of testing speed, the supporting probes are expensive, and most small and medium-sized enterprises cannot afford to use them for a long time. Based on the application status of hydrogen measuring devices at home and abroad, the testing speed of the instrument and the price of the probe are two problems that need to be solved urgently. Invention content: [0003] The object of the present invention is to p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/20C04B35/622C04B35/66B22D2/00
Inventor 李大勇王利华孙谦
Owner HARBIN UNIV OF SCI & TECH
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