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KAYO SHOJI

Kayo shoji Co Ltd is a comprehensive trading company that deals in advanced industrial products made by Japan and European countries, mainly involved in Auto, Tire, Electronics, Steel, Petrochemical, Port, Power Plant , Plastics and Textile industry etc. We can supply all industrial products including transmission machinery, fluid machinery, hydraulic devices, automation products, process control products etc. MADE IN JAPAN SAN-EI AIR HOIST  AIR MOTOR  AIR WINCH OSAWA AIR CLEANER  AIR WOODEN SHOWA FURYOKU KIKAI  BLOWER FAN SUNTES SANYO SHOJI Disc Brakes, Clampers, Centrifugal Clutches Maeda Koki oil signal, water signal, air signal and flow indicator. MADE IN GERMANY TAS POWER LOCK FRIEDRICH VIBRATING MOTOR HUBNER ASM HBM SENSOR ENGEL  DUNKERMOTOREN MOTOR BAUER MOTOR MADE IN CHINA HUANGSHANG HANGLUO SHANGDONG SHANGKUANG XI AN XI FU YANTAI SUNNY NANTONG POWER Others  UEDA SEISAKUSHO AICHI PUMP KOGYO AICHI TOKEI DENKI AIHARA Aishin Ak

Bokena EDDY current testing, magnetic leakage testing

Nanjing BOKENA Automation System Co., Ltd., originated from the eddy current testing laboratory of the Nanjing University of Technology. It is an eddy current testing benchmark enterprise and has long been committed to the development and production of bearing hardness and crack eddy current screening equipment. Our products are widely used in aerospace, electricity, petroleum, natural gas, metallurgical machinery and automotive industries and we have high proprietory intellectual property rights patent technology.



Our products are exported to USA, Russia, Singapore, Thailand, India, Hongkong, Taiwan, Yemen, Kazakhstan, Iran, Japan, Korea, Brazil. We advocate "Technology is the strength, quality is the foundation, honesty is the basic," and  "exceeding detection and creating value" is our tenet and team value.



BKN has formed a social scientific research cooperation network with well-known universities and research institutes in China, which has a strong R&D and production capacity. It guarantees the leading and word-class technology position of BKN industrial nondestructive testing technology.



BKN adheres to the concept of specialization, refinement and strength, focusing on stainless steel pipe on-line and off-line automatic flaw detection, and have achieved good results in this field and become leaders in the industry.



The eddy current sorting machine is the company's flagship product, suitable for rapid sorting of bearing cracks, mixing, hardness deviation, burns. The whole system consists of four parts: testing equipment, testing probe, mechanical and electrical. Realize automatic detection of defects, automatic sorting, automatic alarm.

Eddy Current Testing Equipment
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.

Eddy Current Testing Equipment for Tube, Bar and Wire
Eddy Current Testing Equipment for Tube, Bar and Wire
Eddy current testing is a non-contact testing method, which mainly uses electromagnetic field and electromagnetic induction between metals to detect. It is one of the non-destructive testing methods

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ECT For Automotive And Aerosapce
ECT For Automotive And Aerosapce
Eddy current testing technology has been widely used in the detection of metal components in the aerospace and aerospace fields. In order to ensure the flight safety of the aircraft, the relevant

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Eddy current testing equipments are our flagship products, it contains eddy current testing equipment for tube, bar and wire & eddy current testing equipment for automotive parts and aerospace. Eddy current testing equipment for tube, bar and wire including BKNET-999/H Copper Tube Eddy Current Flaw Detector, GSET-551steel wire eddy current testing, BKNET-101 Automatic Eddy Current Flaw Detector, Rod Tube Rotary Eddy Current Flaw Detector ET-R-15/40/65/90, BKNET-01\02 Welded Pipe Eddy Current Flaw Detector, LGET-553 Aluminum Tube Eddy Current Flaw Detector.



Eddy current testing equipment for automotive parts and aerospace including BKNFX Pre-Multi-Frequency Eddy Current Hardness Separator, BKNET Series Multi-frequency and Multi-filter Eddy Current Flaw Detector, ET-F1 Engine Cylinder Bore Eddy Current Flaw Detector, GTET-02 Cylinder Liner Eddy Current Flaw Testing Machine, Steel Ball Hardness eddy current separator GQYDFX-01, GZET-01 Roller Automatic Eddy Current Flaw Testing Machine, Roller Hardness eddy current Separator GZYDFX-01, Piston Rod Eddy Current Flaw Detector HSGET-04, HSXET-02 Piston Pin Eddy Current Tester, Precision Axis Eddy Current Flaw Detector JMZET-04, Connecting Rod Hardness eddy current Sorting Machine LGYDFX-01, Hub Bearing Eddy Current Flaw Detector LGTSET-A/B, Bolt Vortex Sorter BKNFX-11, Flame Quenching Valve Rod End Hardness Eddy Current Sorter QMYDFX-01, QTXET-01 Ball Socket Eddy Current Sorter, QTXFX-01Ball Socket Hardness Eddy Current Sorter, SCPET-04 Brake Disc Eddy Current Flaw Detector, TLET-04 Camshaft Eddy Current Flaw Detector, TLZET-99 Camshaft Eddy Current Flaw Detector, Tapered Roller Online Eddy Current Flaw Detector YZGZET-01, Ring Crack and Hardness Combination Flaw Detector TQJC-02.

ECT For Automotive And Aerosapce
Eddy current testing technology has been widely used in the detection of metal components in the automotive and aerospace industry. In order to ensure the flight safety of the aircraft, the relevant components must be periodically inspected. The eddy current technology is usually used to detect aero-engine blade cracks, bolts, cracks in the screw holes, multi-layer structure of the aircraft, landing gear, wheels and aluminum skin as the main NDT non destructive testing methods. And subsurface defects, and used to detect defects in the wing joint weld.  In the detection, it can effectively suppress the shaking of the probe, and the material is uneven and cause interference signals. Metal magnetic memory testing technology can be used to diagnose the stress concentration of the above components or early damage.



GTET-02 Cylinder Liner Eddy Current Testing Machine
1.Test object: inner diameter and 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

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GTET-02 Cylinder Liner Eddy Current Testing Machine
Bearing Ring Crack and Hardness Combination Flaw Detector TQJC-02
During the processing of bearing rings, various defects are often generated on the surface or inside, and cracks occupy a large proportion in all defects. The cause of the cracks in the bearing rings

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Bearing Ring Crack and Hardness Combination Flaw Detector TQJC-02
BKNET Series Multi-frequency and Multi-filter Eddy Current Flaw Detector
In the field of parts crack and grinding burn detection, the multi-frequency and multi-filter technology developed by BKN is a great breakthrough in the field of global eddy current technology. It has...

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BKNET Series Multi-frequency and Multi-filter Eddy Current Flaw Detector
BKNFX Pre-Multi-Frequency Eddy Current Hardness Separator
Stimulating coil makes magnetic induction to the tested material. The induced electromotive force received by the testing coil is related to the shape and size of the material hysteresis loop. When the...

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BKNFX Pre-Multi-Frequency Eddy Current Hardness Separator
Bolt Vortex Sorter BKNFX-11
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

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Bolt Vortex Sorter BKNFX-11
Connecting rod hardness vortex sorting machine LGYDFX-01
The connecting rod hardness sorting instrument has a calibration device, input compensation parameters, automatic/manual temperature

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Connecting rod hardness vortex sorting machine LGYDFX-01
ET-F1 Engine Cylinder Bore Eddy Current Flaw Detector
Product introduction

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ET-F1 Engine Cylinder Bore Eddy Current Flaw Detector
Flame Quenching Engine Valve Rod End Eddy Current Hardness Separator QMYDFX-01
1. Hardness testing: the detection resolution is 1-2 HRC (other parameters are stable and consistent); 2. Material sorting: mixtures that can be sorted in heat treatment state. Eddy

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Flame Quenching Engine Valve Rod End Eddy Current Hardness Separator QMYDFX-01
GZET-01 Roller Automatic Eddy Current Flaw Testing
The rolling element has a large surface contact stress during operation, so the quality of the rolling element has an important influence on the life and performance of the bearing. Practical

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GZET-01 Roller Automatic Eddy Current Flaw Testing
HSXET-02 Piston Pin Eddy Current Tester
The piston pin is a cylindrical pin that is mounted on the skirt of the piston. Its middle part passes through the small hole of the connecting rod and is used to connect the piston and the connecting...

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HSXET-02 Piston Pin Eddy Current Tester
Hub Bearing Eddy Current Flaw Detector LGTSET-AB
The hub bearing is one of the key components of the car. Its main function is to carry the weight and provide precise guidance for the rotation of the hub, which requires it to withstand both axial

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Hub Bearing Eddy Current Flaw Detector LGTSET-AB
Piston Rod Eddy Current Flaw Detector HSGET-04
The two piston rollers rotate in the same direction to drive the upper piston rod to rotate, and then the push rod pushes the piston rod through the probe to complete the detection. Product description...

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Piston Rod Eddy Current Flaw Detector HSGET-04
Precision Axis Eddy Current Flaw Detector JMZET-04
The two piston rollers rotate in the same direction to drive the upper piston rod to rotate, and then the push rod pushes the piston rod through the probe to complete the detection....

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Precision Axis Eddy Current Flaw Detector JMZET-04
QTXET-01 Ball Studs Eddy Current Sorting Machine
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

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QTXET-01 Ball Studs Eddy Current Sorting Machine
QTXFX-01 Ball Studs Eddy Current Hardness Separator
Should have sufficient swing angle to meet the requirements of the wheel up and down; Smaller frictional moments are important factors in ensuring steering flexibility...

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QTXFX-01 Ball Studs Eddy Current Hardness Separator
Roller Eddy Current Hardness Separator GZYDFX-01
It is suitable for sorting and testing the hardness and material of cylindrical steel parts such as cylindrical rollers, tapered rollers and needle rollers, and realizes zero defect control of the

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Roller Eddy Current Hardness Separator GZYDFX-01
SCPET-04 Brake Disc Eddy Current Flaw Detector
Brakes currently have disc brakes and drum brakes as well as air brakes. Many older cars are front and rear drums. Many cars are now disc brakes. Because the disc brakes have better heat

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SCPET-04 Brake Disc Eddy Current Flaw Detector
Steel Ball Hardness Eddy Current Sorter GQYDFX-01
The eddy current hardness sorter is an instrument for measuring the hardness of a workpiece based on the principle of eddy current testing. Usually used to measure the hardness of steel, sorting the

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Steel Ball Hardness Eddy Current Sorter GQYDFX-01
Tapered Roller Online Eddy Current Flaw Detector YZGZET-01
Tapered roller bearings are separate bearings, and the inner and outer rings of the bearing have tapered raceways. This type of bearing is divided into different structural types...

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Tapered Roller Online Eddy Current Flaw Detector YZGZET-01
TLET-04 Camshaft Eddy Current Flaw Detector
Surface roughness:>1.6 Detectable crack size: 3mm*0.01mm*0.1mm (length*width*depth) Detectable hole size:¢0.7mm*0.7mm (diameter *depth) Detection rhythm: 5 seconds per beat

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TLET-04 Camshaft Eddy Current Flaw Detector
TLZET-99 Camshaft Eddy Current Flaw Detector
The camshaft is a component of the piston engine. Its role is to control the opening and closing of the valve. Although the speed of the camshaft is half of the crankshaft in a

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TLZET-99 Camshaft Eddy Current Flaw Detector
Valve Tappet Eddy Current Flaw Detector QMTZET-04
Tappet full automatic eddy current testing system is a full automatic crack hardness sorter which integrates light, electricity and machinery. The whole system includes main control system, charging

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Valve Tappet Eddy Current Flaw Detector QMTZET-04
Due to the complex geometry of the auto parts, the equipment is required to have a high level of materials and complicated materials, requiring diverse equipment and high precision. In addition, the production of auto parts is a large industrial production, with certain beat monitoring requirements, and only by reducing the testing costs, can we reduce the automobile production and improve the competitiveness in the domestic and foreign markets. With the development of the national economy, the automobile industry has become a pillar industry in China. Therefore, non-destructive testing technology for eddy current flaw detectors for automotive parts is also receiving increasing attention from manufacturers and researchers. At present, the most widely used non-destructive testing method in the detection of automotive parts is the eddy current flaw detector ultrasonic testing method. In the ultrasonic flaw detection of eddy current flaw detectors at home and abroad, the most used type A ultrasonic flaw detector. It adopts A-type ultrasonic display, which has the advantages of simple and cheap equipment, can locate and quantify defects, and is widely used in production inspection.



However, its flaw detection results are not intuitive, no record, difficult to detect, and many human factors. Seriously affect the reliability of detection. Due to the continuous development of computer technology and electronic devices, the digital acquisition and analysis of the ultrasonic signal of the eddy current flaw detector become possible, the waveform can be recorded and preserved, and the ultrasonic detection of the eddy current flaw detector is positive digital signal processing and imaging direction development. Super-generation image technology is a remarkable new technology. The ultrasonic image of the object can provide intuitively and a large amount of information, directly reflecting the acoustic and mechanical properties of the object, and can also evaluate the mechanical properties of the microstructure of the solid material. Suddenly macroscopic discontinuities. In short, the NDT non-destructive testing method for automotive parts eddy current flaw detector will develop with the advancement of modern high-tech, to the direction of intelligence, automation and imaging, in order to adapt to the rapid development of modern automobile manufacturing industrial parts quality inspection, testing requirements.

Magnetic Flux Leakage Testing Equipment
Electromagnetic detection is a very important non-destructive testing method and is widely used. Magnetic flux leakage is a magnetic method of nondestructive testing that is used to detect corrosion and pitting in steel structures, most commonly pipelines and storage tanks. The basic principle is that a powerful magnet is used to magnetize the steel. When used in combination with other methods, it provides a quick and inexpensive assessment of the workpiece of ferromagnetic materials. With the advancement of technology, people are paying more and more attention to the automation of the inspection process. This not only reduces the labor intensity of the inspection work but also improves the reliability of the test results and reduces the influence of human factors. The MFI magnetic flux leakage inspection method is a highly automated magnetic detection technology. The principle is that after the ferromagnetic material is magnetized, the surface and near-surface defects form a leakage magnetic field on the surface of the material, and defects are detected by detecting the leakage magnetic field. In this sense, the magnetic particle detection technology commonly used in pressure vessel inspection. However, it is customary to use the method of measuring the leakage flux with a sensor as the magnetic flux leakage detection, and the magnetic flux to detect the leakage flux. The method is called magnetic particle detection and they are juxtaposed into two detection methods.

Portable Magnetic Flux Leakage Testing Equipment
Portable Magnetic Flux Leakage Testing Equipment
Magnetic flux leakage test refers to the formation of a leakage magnetic field on the surface of a test piece after it is magnetized due to defects on the surface or near surface of the test piece.

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Benchtop Magnetic Flux Leakage Testing Equipment
Benchtop Magnetic Flux Leakage Testing Equipment
Magnetic flux leakage test refers to the formation of a leakage magnetic field on the surface of a test piece after it is magnetized due to defects on the surface or near surface of the test piece.

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Magnetic particle testing can only detect surface and near-surface crack defects, and it needs surface grinding when testing. It is only suitable for the detection of workpiece discontinuation. In addition to the surface and near-surface crack defects, the MFI magnetic flux leakage inspection can also find the corrosion inside the workpiece from the outside. Defects such as pits, and do not need to be polished on the surface of the workpiece, suitable for on-line inspection of workpieces. On-line inspection of workpieces is currently the most urgent method for users, which can reduce unnecessary parking and reduce inspection costs. In addition, the magnetic flux leakage detection can also quantify the depth and length of defects. Although the application of magnetic flux leakage detection technology is rarely used in workpiece inspection, it has the advantages that magnetic particle detection does not have, so its application prospect is very broad.

Ultrasonic Testing Equipment
What is Ultrasonic?


The process of mechanical vibration propagation in the medium is called a wave. The human ear can feel the elastic wave with a frequency higher than 20 Hz and lower than 20,000 Hz, so the elastic wave in this frequency range is also called a sound wave. Elastic waves with a frequency of fewer than 20 Hz are also called infrasound waves, and elastic waves with a frequency higher than 20,000 Hz are called ultrasonic waves. Infrasound waves and the ultrasonic human ear can not feel. Ultrasonic Testing, abbreviated as UT, is an ultrasonic scanning technique and is one of five conventional NDT non-destructive testing methods.

Steel Bar Testing
Steel Bar Testing
Steel bar are rolled by a rolling mill and produce both surface defects and internal defects during the rolling process. The internal defect is that the original defects of the steel chain or

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Steel Pipe Testing
Steel Pipe Testing
A steel having a hollow section that is much longer than the diameter or circumference. According to the cross-sectional shape, it is divided into round, square, rectangular and special-shaped steel

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Inspection introduction


NDT Non-destructive testing is a means of inspecting the surface and internal quality of the part being inspected without damaging the working condition of the workpiece or raw material.



The relevant ultrasonic inspection standards in China today are JB/T4730.3, GB/T11345-1989, CB/T3559-2011, etc., JB/T4730.3 is a relatively comprehensive standard, and the latter two standards are weld inspection standards. There are other inspection standards for steel plates, castings and forgings, and users can make corresponding inquiries as needed.



Ultrasonic detector


An ultrasonic testing leak detection system differs from a specific gas sensor in that it is limited to the specific gas it is designed to sense, but is detected by sound. Any gas that traverses through the leak hole will have a portion of the ultrasonic band that allows the ultrasonic testing leak detection system to sense any type of gas leak.


Scan with the ultrasonic detector leak detection system to hear leaks from the headphones or to see changes in the digital signal. The closer to the leak, the more obvious. If the scene environment is noisy, use a rubber tube to narrow the receiving area and shield against the ultrasonic waves.



In addition, the frequency adjustment capability of the ultrasonic testing leak detection system also reduces background noise interference. Check the air pressure system and test the pressure cables used by the telecommunications company. Tanks, lines, and hoses can be tested by pressurization, as well as vacuum systems, vortex exhaust, diesel engine fuel intake systems, vacuum chambers, ship cabins, watertight doors, material handling systems, pressure vessels and piping. Internal and external gas and liquid leakage, etc.

Product: Gear motor, coupling, Brake, Clutch, Flowmeter,etc

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Labels: San-ei Suntes, Mitsubishi, TAS, etc.

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Kayo Shoji (Thailand) Co.,LTD.
Email: sales@kayoshoji.com
Address: 177 Soi Ratchada Niwet 1/5, Samsen Nok, Huai Khwang, Bangkok 10310 Thailand
Tel: 0066(0)22742010/022742011 Tel/Fax:022742014