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毕业设计(论文)
( 201 届)
设计(论文)题目: 系 部: 机械工程技术系 班 级: 0911
学 生 姓 名:
指 导 教 师:
常州工程职业技术学院
二0一 年 六 月 一 日Abstract
Magnetic particle testing is made of ferromagnetic materials such as steel shall be workpiece magnetized and use the defective parts can absorb the characteristics of magnetic powder, magnetic powder distribution according to show is to detect the object surface defects and near surface defects detection method abbreviation for MT。
In recent years in China magnetic powder testing equipment development is soon,has realized the seriation, three whole wave dc testing ultralow frequency equipment performance has hit demagnetized to similar foreign equipment level。Exchange detection is the machine used to test the power of residual magnetism when phase controller ensure stability in our country is the characteristics of residual magnetism。The phase controller using thyristor technology power can replace the lotus root stepless adjusting magnetization current transformer,magnetic powder detection equipment for our country electronic and the basic foundation miniaturization。Intelligent equipment already production application optoelectronic scanning image recognition magnetic powder flaw detector has successfully developed。Using the computer processing magnetic image on the test of reality to much progress, automation and half automation equipment has many applications。
The ferromagnetic materials workpiece magnetized by the existence of continuity,to make the work surface and near surface of magnetic induction line to occur from local distortion leakage magnetic field,on the surface of the adsorption of magnetic powder,in the right light visual visible magnetic image formation, which shows the location of the continuity not size and shape and severity。The magnetic powder detection quality control, is based on magnetic powder detection sensitivity and influence the inspect
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