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An electric pulse is a pulse generated by electrons, and a pulse is a process of changing a voltage in a short time. Electropulsing is an unsteady current field generated by a capacitor or an intermittent source. The alternating current we use can be regarded as a pulse current, and one of the cycle processes can be regarded as an electrical pulse. Modern electric pulse technology has developed to the trend of higher frequency and high energy peaks. It has a wide range of applications in materials testing, biology, medicine, nuclear energy, military and other fields. The main working principles are high energy Joule heating effect, hot pressing effect, high-frequency magnetic induction effect, electroforming and so on. Common waveforms are a rectangular, sinusoidal, rectangular, sinusoidal, group, and so on.

ECT Eddy current testing is a non-contact testing method, which mainly uses the electromagnetic field and electromagnetic induction between metals to detect. It is one of the NDT non-destructive testing methods in the industry. The principle of eddy current testing is that the coil with alternating current is placed on the metal plate to be measured or outside the metal, tube to be measured (see figure). The alternating magnetic field will be generated inside and near the coil, which makes the induced alternating current in the sample appear to be eddy, which is called eddy current. Under certain conditions, the current through the coil is invariable. If the coil is close to the workpiece under test, like a ship in the water, the eddy current will be induced in the workpiece. Under the influence of the eddy current, the coil current will change. Because the size of the eddy current varies with the defect in the workpiece, the change of coil current can reflect the defect in the workpiece.

There are two main types of ball studs: one is a combination of a spherical pin and an integral ball seat, and the other is a combination of a hemispherical ball pin and a spherical member. In the past, coil springs were used for preloading and compensating for wear. Nowadays, synthetic resin pellets with elasticity and lubrication are widely used, which reduces the cost and improves the steering stability. In addition, the material and shape of the dust cover, the type of grease, etc. have been greatly improved, the grease nipple has been eliminated, and a maintenance-free structure has been realized. The ball stud is mainly composed of an end cap, a ball pin, a ball seat and a dust cover. Ball studs are widely used in independent suspension systems, and the control arm or thrust rod is often connected to other components through a ball stud at the end. The main function of the ball pin is to achieve the up and down of the wheel and the steering movement. The ball studs eddy current sorter is a sorting machine with high practical value in industrial applications. As one of the professional manufacturers of vortex separators, BKN Automation will introduce you to this product in this article.

Automatic EDM notch machine is the ideal equipment for processing artificial defects of pipe rod standards in non-destructive testing work. The flaw detector has the characteristics of simple operation, safety and reliability, high production precision, fast processing speed, and convenient carrying by ultrasonic flaw detection. It can process artificial defects on non-ferrous metals and ferrous metal tubes and bar standards. Hardness sorting can process longitudinal, transverse, and oblique rectangular groove injuries on the inner and outer surfaces of the tube and rod. The core part of the equipment adopts advanced digital processing technology and system integration technology. With modern advanced digital control and servo technology, the injury process is fully automated, with high processing precision, fast speed, easy operation and performance at the international advanced level. The entire instrument is portable and easy to carry and has low requirements for the environment of steel pipe scratching.

GTET-02 Cylinder Liner Eddy Current Testing Machine Introduction 1. Test object: inner diameter and an outer diameter of the cylinder liner 2. Standard defective parts: a flat bottom hole with a depth of 0.5 mm and a diameter of 0.5 mm extending from the surface of the workpiece to the metal. 4.The rate of missed standard defect is 0%; the rate of false positives (only misidentified products are judged as non-conforming products) ≤1%. Detection method Eddy current testing is to connect the conductor to the coil with alternating current. The alternating magnetic field is established by the coil. The alternating magnetic field passes through the conductor and electromagnetic induction is applied to establish an eddy current in the conductor. The eddy currents in the conductor also generate their own magnetic field, and the action of the eddy current magnetic field changes the strength of the original magnetic field, which in turn causes a change in the coil voltage and impedance.

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ECT Eddy current testing is a non-contact testing method, which mainly uses the electromagnetic field and electromagnetic induction between metals to detect. It is one of the NDT non-destructive testing methods in the industry. The main features of eddy current tester are: 1) The detection sensitivity of the surface of the conductive material and the near surface defects is high; 2) A wide range of applications can be monitored for various physical and technological factors affecting the characteristics of induced eddy currents; 3) It is easy to realize high-speed, high-efficiency and automatic detection of tubes, rods and wires without using a coupling agent; 4) Under certain conditions, it can reflect information about the crack depth; 5) Monitoring can be carried out in the case where other detection methods such as high temperature, thin-walled tubes, thin wires, and inner surface of the parts are not applicable.

https://www.bkneddy.com/eddy-current-testing-equipment/bearing-crack-hardness-flaw-detector.html During the processing of bearing rings, various defects are often generated on the surface or inside, and cracks occupy a large proportion of all defects. The cause of the cracks in the bearing rings is complicated. From the raw materials to the finished products of the ferrules, if the process is not proper, the cracks may be directly caused or the hidden cracks may be buried for the occurrence of the lap ring grinding cracks.

https://www.bkneddy.com/eddy-current-testing-equipment/bolt-vortex-sorter-bknfx-11.html Bolt: Mechanical parts, cylindrical threaded fasteners with nuts. A type of fastener consisting of a head and a screw (a cylinder with an external thread) is required to be fitted with a nut for fastening the two parts with through holes. This type of connection is called a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so the bolt connection is a detachable connection.

GSET-551 Steel Wire Eddy Current Flaw Detector Brief Using the eddy current signal processing method and high-performance DSP algorithm, the NDT wire rope tester detection ability of micro-crack is as high as 0.05mm deep crack. Using computer digital technology and "digital eddy current detection technology" to achieve high-speed data processing capabilities, detection speed can be reached to 1~500m/min. Technology can effectively suppress all kinds of interference signals. It has waveform, amplitude, phase, X-axis and Y-axis signals. The professional "digital filtering" is adopted to effectively suppress the interference signal in the field and ensure the accuracy and stability of the detection.

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