适用范围：

适用于机车车辆车轴表面的磁粉探伤

特点及技术指标：

1. 周向磁化采用柔性电极保证通电可靠不打火，磁化效果稳定
2. 纵向磁化采用镀银接点强力锁紧钳形开合线圈，接合更可靠，性能更稳定。
3. 采用了变频传动装置来控制车轴旋转，转速可自由设定并实现动态换向。
4. 磁化线圈断电时采用了不等值的衰减措施，使电流按预定程序逐渐衰减到零，经系统自动进行的原位退磁工序后，探伤件的剩磁小于0.3mT
5. 磁化方式：复合磁场
6. 周向磁化峰值电流：0-4800A
7. 纵向磁化磁动势：0-28000AT连续可调
8. 周向磁化夹头最大间距：2650mm
9. 移动支撑最大工件重量：1500kg
10. 退磁方式：原位衰减法
11. 检测灵敏度：清晰显示A₁型标准试片15/50（7/50）的人工缺陷
12. 剩磁：不大于0.3mT

JWZ-A Magnetic Particle Flaw Detector for Axle

Applicable scope

It is suitable for the surface of the rolling stock axles of magnetic particle testing. Features and Technical parameters

1. Circular magnetization using the flexible electrode to ensure no ignition, magnetization is stable

2.  Silver-plated contacts with a strong vertical magnetic locking clamp opening and closing coils, bonding more reliable, more stable performance

3.  Using variable frequency drives to control axle, rotation speed can be freely set and change the dynamic

4. Adopting attenuation measure of magnetization current’s difference value to make the current scheduled programs gradually decay to zero, the system automatically in situ demagnetization process, the testing piece of remanence is less than 0.3mT.
5. Magnetization mode: Compound Magnetic Field.
6. The peak value current of circular magnetization:0-4800A
7. Longitudinal magnetization MMF: 0-28000AT continuously adjustable.
8. The maximal distance of circular magnetic heads:2650mm
9. The maximal weigh of mobile support work-piece: 1500kg
10. Demagnetization method: in situ decay
11. Detecting sensitivity: Clearly displays the artificial faults of A1 standard test piece 15/50（7/50）

<>12.Residual Field: ≤0.3mT