少妇特殊按摩高潮惨叫无码,日韩欧美精品一区二区在线,精品国产Av无码久久久e,天天综合狠狠精品视频一二三区

  • 1
  • 2

News

Contact Us

Hotline::400-820-8239
Meijun Metals (Shanghai) Co., Ltd. 
Tel:021-68183992 
Fax:021-68183990

Details
Position: Home> Details
Q: What is aluminum alloy ultrasonic flaw detection? What to check
Category: Common Problem
Date: 2015-03-26
Click: 1490
Author: admin
Collection:
A錛?Ultrasonic flaw detection is a physical non-destructive test method that uses ultrasonic waves to directly inspect internal defects on ingots.

A:Ultrasonic flaw detection is a physical non-destructive test method that uses ultrasonic waves to directly inspect internal defects on ingots. During the inspection, the directivity of the sound beam and the time required for the sound wave to return from the defect can be used to locate the defect; the sound is reflected or penetrated by the energy to quantify the defect; according to the size, shape, shape and distribution of the defect The waveform characteristics characterize the defect.

         There are many methods for ultrasonic flaw detection. The method of detecting the ingot in the aluminum processing plant in China is the automatic flaw detection method of longitudinal wave pulse reflection water intrusion; the principle of this method: before the flaw detection, the ingot is placed on the rotating wheel of the water tank, and then the center The cart with the probe rides on the ingot and places the probe on the normal to the axial direction of the ingot. In the case of flaw detection, the ingot is rotated at a uniform speed, and the flaw detection vehicle advances at a uniform speed in the longitudinal direction, so that the ultrasonic beam forms a spiral scan on the ingot, and in the process, when the ultrasonic wave emitted by the probe hits the defect interface, reflection occurs, and Return by the meta-path, convert it into a high-frequency electric pulse by the probe, and display it after amplification. The longitudinal position of the defect is the position of the probe. The depth of the defect is generally not located in the so-called inspection, and then the defect is quantified according to the "equivalent method", and finally the defect is characterized according to the characteristics of the reflected flaw detection pulse.

         Ultrasonic flaw detection has the characteristics of sensitivity, accurate inspection, no damage to the ingot casting, convenient operation, fast, and no harm to the human body. This advanced technology was put into use in the aluminum processing industry in China in the 1980s, mainly for the inspection of special products. Cracks, slag inclusions, pores, etc. in the ingot of the cast ingot destroy the continuity of the metal.

Previous: Q: Reprinted: Aluminum alloy into Xiamen Convention and Exhibition to build mainstream materials
Next: Q: The manufacturing industry is in a downturn, and 40% of aluminum production capacity is losing mo
欧美男人亚洲天堂| 欧美双飞| 罗甸县| www.黄色小说图片.com| 亚洲成a人v欧美综合天堂,| 色婷婷网| 色婷婷电影| 你懂的视频 在线| 无码99| 蜜臀久久久精品人妻久久| 麻豆免费看| 人妻的秘密| 日韩大片在线永久免费观看网站| 99国产精品视频| 亚洲综合av天堂| 日本免费一区二区三区色香欲86| 亚洲无线无码| 精品久久综合免费视频| 啊啊啊av| 国产精品高潮呻吟久久AV| 99精品免费久久久| 亚洲欧美精品自产自拍| 亚洲另类精品无码专区| 欧美熟妇久久| 日本综合久久综合网| 欧美日韩超碰爱爱噜噜| 久久久久无码专区亚洲AV| 蜜桃涩涩A∨片| 欧美疯狂做受| 夜夜| 国产精品成熟老女人视频| 色欲Av永久无码精品无码| 少女たちよ在线观看动漫游戏| 97国产精品视频人人做人人爱| 一二三区av| 国产精品成人高清免费播放| 男人天莹久久AV| 激情久久久久99蜜桃| 精品国产日韩亚洲一区| 亚洲精品无码中文久久字幕| 蜜臀av性久久久久av蜜臀妖精|