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Quick determination device for surface tension of liquid metal and liquid alloy

A liquid alloy and surface tension technology, applied in the field of metallurgy and casting, can solve the problems of affecting the measurement accuracy, blowing out the bubble pressure difference curve, and hindering the promotion and application.

Inactive Publication Date: 2005-04-06
HARBIN UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

However, due to the downward blowing method of the linear capillary, when measuring liquid metal and liquid non-ferrous alloys, the surface oxide film is easy to wrap the capillary quartz nozzle; It is easy to enter the capillary quartz tube; the above phenomenon leads to the phenomenon that no air bubbles can be blown out and the pressure difference curve is not equal, which seriously affects the measurement accuracy and hinders the popularization and application of the "bubble amplitude-frequency equivalent method".

Method used

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  • Quick determination device for surface tension of liquid metal and liquid alloy
  • Quick determination device for surface tension of liquid metal and liquid alloy

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Embodiment Construction

[0005] This embodiment is described in conjunction with Fig. 2. This embodiment consists of a probe up and down drive mechanism 1, a micro pressure difference sensor 2, an infrared temperature sensor 3, a heat-resistant probe 4, an air path electromagnetic reversing valve 5, a miniature air compressor 6, an inert gas Steel cylinder 6-1, differential pressure signal amplifier 7, temperature signal amplifier 8, LED display 9, micro-printer 10, single-chip microcomputer expansion circuit 11, keyboard circuit 12; the power supply control signal input of the motor 1-1 in the probe up and down drive mechanism 1 connected to the power supply control signal output end of the single-chip microcomputer expansion circuit 11, the lower end hoof-shaped manipulator of the traction frame 1-2 in the probe up and down drive mechanism 1 is connected with the outer surface of the heat-resistant probe 4, and the high-temperature-resistant quartz tube in the heat-resistant probe 4 The upper port of...

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Abstract

It is a rapid measurement apparatus for liquid metal and liquid alloy surface tension and it relates to metallurgy and foundry field. The power input end (1-1) is connected with output end of (11) power; the down end of (1-2) is connected with (4) and the upper end of (4-2) is connected with (4-1); the two gas-in end of (5) is separately connected with vent of (6)(6-1); the controlled end of (6) is connected with output end of (11); the controlled end of (5) is connected with output end of (11); the output end of (2) is connected with input end of (11) through (7); the output end of (3) is connected with input end of (11) through (11); the output end of (11)is connected with input end of (9); the output end of (12)is connected with input end of (11).

Description

Technical field: [0001] The invention relates to the field of metallurgy and casting, in particular to a rapid measuring device for the surface tension of liquid metal and liquid alloy. Background technique: [0002] Surface tension is one of the important physical parameters of liquid metals and liquid alloys. Many quality parameters, such as cast iron graphite morphology, aluminum alloy modification treatment effect, alloy filling ability, etc., are closely related to the surface tension of its alloy liquid. The traditional methods for measuring the surface tension of liquid alloys mainly include bubble maximum pressure method, static drop method, and pulling cylinder method, etc., and the measurement time is more than a few minutes. So far, there is no real rapid detection method for the furnace detection of the surface tension of liquid alloys. Therefore, the desire to evaluate the relevant quality parameters of liquid alloys in real time using surface tension has not ...

Claims

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Application Information

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IPC IPC(8): G01N13/02
Inventor 李大勇石德全王利华张宇彤
Owner HARBIN UNIV OF SCI & TECH
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