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Eddy Current Sorting Machine

The eddy current sorter is a technologically advanced eddy current instrument. It can detect the crack, crack, tear, and other defects of metal parts, as well as the separation of heat treatment mixture and hardness without heat treatment. The eddy current sorting machine also can be used for the identification and sorting of material composition, hardness, depth of surface hard layer, tensile strength, heat treatment state, cracks, wrong teeth, and the mixture of metal pipe rods, metal parts such as high-strength bolts, valves, bearings, rollers, pins, etc. 
 

The optical sorting machine for fasteners adopts manual feeding or automatic feeding positioning, through the PLC preset various types of detection parameters, outputs processing control signal, reads the eddy current flaw detection system on the workpiece defect positioning alarm signal. And finally, automatic control eddy current sorting machine eliminates the defect workpiece. As the China top 3 sorting machine manufacturer, DSS's automatic screw sorting machine system adopts a large screen LCD digital and large size of the display tube. The display interface includes a bar graph, cursor figure, waveform graph, digital display. Users can choose different display interfaces according to different separation projects, making the quality condition of the workpiece to be tested clearly shown on the LCD screen, so that users can operate the instrument more intuitively and simply.
 

The eddy current sorter is a method of detection using the principle of electromagnetic induction. It is the most commonly used among the five non-destructive detection methods. Eddy current sorting machine is widely recognized for its advantages of no need for a coupling agent, fast speed, and ease of automation. It can be used to sort materials, measure the thickness of the film layer and the size of the workpiece, and some physical properties of the material. Whether it be automatic length inspection, diameter inspection, feature presence, mixed parts, brass insert inspection, dowel pin inspection, thread inspection, foreign materials, counterbore depth, or any other quality problem, DSS,  a China top 3 sorting machine manufacturer, has experienced team with knowledge of past applications and cutting edge technology, which can provide a solution for your unique automatic inspection and automatic sorting application. Our inspection and metal fastener sorting machines can be configured for many unique applications.
 

  • FET-II Eddy Current Hardness Testing Fastener Sorting Machine
    FET-II instrument is the product upgraded and updated from steel material nondestructive testing instrument of our company. The major part, with Intel 5p series single chip computer as the main data processing, signal, analysis and control, peripheral devices are COMS small and medium scale integrated circuit, which have the advantages of low functional consumption and strong anti-interference, etc. 
  • SGF-1B Automatic Eddy Current Hardness Testing Bolt Sorting Machine
    SGF-1B type instrument adopts imported electronic components, in order to improve the reliability, signal processing circuit fully adopts small and medium-sized analog and digital integrated circuit. It adopts a piece of circuit board to reduce internal wiring, shorten the signal transmission path to decline interference, alarm output plughole set at the rear panel of the machine, this interface provides the convenience for connecting automatic detection line, with functions of AC/DC, this machine has multi-purpose, applicable for steel mixture separation, error separation of heat treatment hardness, and apply for mixture separation and burnt quality nondestructive testing of the steel heat treatment state before and after processing, and the crack detection under certain conditions. 
  • ZGF-Ⅲ Eddy Current Automatic Screw Sorting Machine
    ZGF-Ⅲ Intelligent non-destructive separator adopts large screen LCD digital and large size of display tube. Display interface include: bar graph, cursor figure, waveform graph, digital display. Users can choose different display interfaces according to different separation project, makes the quality condition of the workpiece to be tested clearly shown on the LCD screen, users will operate the instrument more intuitively and simply.
  • ZGF-A Automatic Eddy Current Non Destructive Testing Sorting System
    ZGF-A Intelligent non-destructive separator adopts large screen LCD digital and large size of display tube. Display interface include: bar graph, cursor figure, waveform graph, digital display. Users can choose different display interfaces according to different separation project, makes the quality condition of the workpiece to be tested clearly shown on the LCD screen, users will operate the instrument more intuitively and simply.

The Principle of Eddy Current Sorting Machine

 

The eddy current sorter uses the principle of electromagnetic induction to excite the probe coil with a sine wave current. When the probe approaches the metal surface, the alternating magnetic field around the coil generates an induced current on the metal surface. For flat metal, the direction of the induced current is a concentric circle of the coil, which resembles a vortex, called eddy current. At the same time, the eddy current also generates a magnetic field of the same frequency, the direction of which is opposite to the direction of the coil magnetic field. Cracks in metal materials will change the size and distribution of eddy currents. Analysis of these changes can detect defects in ferromagnetic and non-ferromagnetic materials. 

For the influence of defects of hardness value of magnetic conductive material, varieties, the depth of hardening layer, heat treatment process, and parts (such as cracks, porosity, inclusions, etc.) on the magnetic field is different, and there are certain logic corresponding relations between them. When the magnetic field probe uniformly distributed in contacts of the workpiece to be measured, the probe can produce a changing magnetic field. The changing magnetic field quantity will produce an exciting current on the probe coil and transfer to the instrument by wire, after analyzed and processed by the circuit analysis instrument center. The quality condition of the workpiece to be measured can be displayed on the screen after compared the measured workpiece with the standard sample, which can realize the rapid identification and distinguish of material varieties, hardness and depth of hardening layer, heat treatment status, and defects.


The Advantages of Eddy Current Sorting Machine

 

1. Non-destructive testing, no special requirements for the surface of workpieces. (Avoid the destroy to the surface defects state of the workpiece in traditional test methods, when debugging eddy current sorting machine, it only needs to prepare two standard samples of same material and workpiece.)

 

2. The eddy current sorter operation is simple and convenient, it has sound and light alarm for the qualified and unqualified workpiece. (It sets the function of man-machine conversation inside the instrument, only prepare two pieces of a standard sample for the same specification of the workpiece, and start work after simple setting)

 

3. Rapid detection speed. (Put the workpiece into the probe only when testing, the fastener sorting machine's efficiency is ten times, even hundreds of times than the traditional test method.)

 

4. Suitable for mass detection, ensure the quality of products. (100% inspection of all raw materials and finished goods, thus avoid the missing inspection caused in conventional sampling inspection.)

 

5. The metal sorting machine sensitivity adjustable range is wide. (Current and frequency detection is continuous and adjustable, which adapts to the needs of different workpieces and items under test.)

 

6. Rich graphics interface, the quality of workpiece to be measured is intuitive. (use double display mode of LCD screen display and digital tube display. The display interface includes a bar graph, cursor figure, waveform graph, digital display. According to the relevant graphics and position, users can intuitively observe the quality of workpiece be measured, can obtain steel varieties, hardness value, the depth of hardened layer and the carbon content, etc. through the relevant procedures setting.)

 

7. The model of an optical sorting machine for fasteners is beautiful, lightweight, AC/DC. 
 


The Applications of Eddy Current Sorting Machine

 
● Application departments: aviation, aerospace, machinery, nuclear industry, automobile manufacturing, shipbuilding, electronics, steel structure, commodity inspection, import, and export, etc.
● Objects of application: flaw detection, thickness measurement, performance testing

1. The steel grade and type identification of the same size of materials. (Rapid separation of material)

2. The hardness testing and fast distinguish of the same size of the workpiece. (Rapid separation of hardness)

3. For carbon structural steel can measure the carbon content of the material. (Fixed carbon)

4. Effective distinguish and identification of defects on the material and heat-treated workpiece. (Crack detection)

5. Detecting and separating the depth of the hardening layer.

6. Identification and separating of mechanical properties (strength) of materials and heat-treated workpiece.

7. Distinguish different heat treatment states of the same material.

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