| JWH-A型环类零件磁粉探伤机 适用范围： 适应于铁路轴承内外圈等环类零件专用磁粉探伤检测 特点及技术指标： 1. 周向磁化采用中心导体法，零件内、外表面纵向磁化采用感应法，保证磁化效果稳定 2. 一体化复合磁化装置中心导体采用可伸缩结构，便于放置工件 3. 检测工件可自动360°全回转，并可进行动态换向，便于观察磁痕 4. 磁化电流由可控硅调压�？榭刂�,电流大小可根据环类零件的长短及直径大小随时调整，以满足不同零件的探伤要求 5. 采取磁化电流不等值衰减措施，关断电源时自动退磁，被检测工件剩磁小 6. 床式一体化设计，无须特殊基础，安装维修简便 7. 磁化方式：复合磁场 8. 输入功率：40kW 9. 周向磁化峰值电流：0-2500A连续可调 10. 纵向磁势0~8000AT连续可调 11. 工件最大宽度：400mm 12. 工件最大回转直径：400mm 13. 工件最大重量：35kg 14. 退磁方式：原位衰减法 15. 检测灵敏度：清晰显示A1型标准试片15/50（7/50）的人工缺陷 16. 剩磁：不大于0.3mT 17. 主机外形尺寸：2.1m×1.0m×1.2m 18. 主机总重量：500kg
JWH-A Magnetic Particle Flaw Detector for ring parts Applicable scope For ring parts of railway train magnetic particle testing. Features and Technical parameters 1. Circumferential magnetization adopts center conductor method, longitudinal magnetization adopts inductive method for inner surface and outer surface of the part. magnetizing effect is stable 2. The central conductor has a retractable structure，Easy to place workpiece 3. Workpiece can all rotation 360°,and Dynamic reversing,easy to observe the magnetic particle indication 4. Magnetizing current controlled by thyristor voltage regulation module,It can be adjusted at any time according to the length and the diameter of the parts 5. Adopting attenuation measure of magnetization current’s difference value, It can demagnetize automatically and has little residual field when shut off the power. 6. Bed struct integration design, without special foundation, easy installation and maintenance 7. Magnetization mode: resultant magnetic field 8. Input power: 40kW 9. The peak value current of circular magnetization: 0-2500A continuously adjustable 10. The peak value current of longitudinal magnetization: 0-3200A continuously adjustable 11. Maximum workpiece width: 400mm 12. Maximum workpiece rotating diameter:400mm 13. Maximum workpiece weight: 35kg 14. Demagnetization method: in situ attenuation method 15. Detecting sensitivity: Clearly displays the artificial defect of A1 standard test piece 15／50 16. Residual Field: ≤0.3mT 17. Mainframe exterior size: 2.1×1.0×1.2m 18. Mainframe weight: 500kg
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