Flaw detection method for titanium and titanium alloys by water film method
A flaw detection and titanium alloy technology, which is applied in the analysis of solids using sonic/ultrasonic/infrasonic waves, can solve the problems of large beam energy transfer attenuation of ultrasonic flaw detectors, particularly high requirements for inspection personnel, and low detection efficiency. Loss, improve the success rate, and ensure the effect of factory quality
Inactive Publication Date: 2013-01-02
攀枝花云钛实业有限公司
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Problems solved by technology
[0002] At present, titanium ingot smelting enterprises at home and abroad usually use the ultrasonic flaw detection method to detect internal cracks, pores and other defects in titanium ingots. , Scattering, and diffraction phenomena are serious, and the operating level of the testing personnel is particularly high, so the detection efficiency is low
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[0010] Build a pool with a width of two meters and a length of nine meters. Put the titanium ingot into the pool and put in clear water so that the water just flows over the upper surface of the titanium ingot. Set up rails on both sides of the pool and place the ultrasonic flaw detector on the sliding rail car. The trolley can run freely along the track. Due to the transmission effect of water, the sound wave can be well transmitted to the titanium ingot, and the penetration and reflection characteristics of the ultrasonic wave on the titanium metal are used to detect defects such as internal cracks and pores in the titanium ingot to ensure the quality of the titanium ingot and improve the performance of the next process. Success rate, reduce losses.
[0011] Scanning range (mm) 0 ~ 10000 Vertical linearity error ≤3% Horizontal linearity error ≤0.2% Detection sensitivity margin ≥62dB (depth 200mmФ2 flat-bottomed hole) Dynamic Range ≥32dB Resolution ≥40dB (2.5P20) Freq...
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Abstract
The invention discloses a flaw detection method for titanium and titanium alloys by a water film method, which is implemented as follows: a pool with a width of two meters and a length of nine meters is built; a titanium ingot is placed in the pool; clean water is fed into the pool, and water is just above the upper surface of the titanium ingot; because of the transmission function of the water, sound waves can be transferred to the titanium ingot well; and by using the transmission and reflection characteristics of ultrasonic waves on titanium metals, defects such as cracks, air holes and the like in the titanium ingot are detected. The invention provides a water film type flaw detection method for internal defects of titanium and titanium alloys, and the method can not cause the phenomena such as large energy transmission attenuation of wave beams of an ultrasonic flaw detector, wave cluttering, scattering and diffraction, has common requirements on the operant level of the detecting personnel, and is high in detection efficiency; and by using the method, the delivery quality of titanium ingots can be ensured, the rate of finished products of the next process can be improved, and loss can be reduced.
Description
Technical field [0001] The invention belongs to the technical field of flaw detection methods for internal defects of titanium and titanium alloys. Background technique [0002] At present, domestic and foreign titanium ingot smelting enterprises usually use ultrasonic flaw detection methods to detect flaws such as internal cracks and pores in titanium ingots. However, this dry inspection method can easily cause large attenuation of ultrasonic flaw detector beam energy transmission and clutter. , Scattering and diffraction phenomena are serious, and the operation level of the inspectors is particularly high, so the inspection efficiency is low. Summary of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned existing ultrasonic flaw detection method for flaw detection of internal defects of titanium ingots and provide a method that does not cause large attenuation of ultrasonic flaw detector beam energy transmission, clu...
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IPC IPC(8): G01N29/04
Inventor 苏鹤洲施汝洪朱发金赵之华袁拓林杨攀峰
Owner 攀枝花云钛实业有限公司