Abstract: Electromagnetic crimping technology can obviously improve the mechanical and electrical properties of cable joints. However, the integrated electromagnetic forming coil seriously limits the practical engineering application of electromagnetic crimping technology. Firstly, the structure of the disk separable coil was proposed, and the electromagnetic simulation model of the disk coil was established to calculate the current and magnetic field distribution during the working process of the coil. In addition, the dynamic analysis software was used to simulate the deformation speed of the pipe under different charging voltages. It shows that the pipe may collide in the deceleration stage when the charging voltage is too low,which will affect the deformation effect. Through the combination of simulation analysis and theoretical calculation, the influence of the number of coil turns on the energy utilization efficiency of the magnetic field coil was analyzed. The 4-turns disk coil has the highest energy utilization efficiency when the loop parameters are small. Finally, the cable crimping experiment was carried out by using a separable coil, and the experimental results show that with the increase of the discharge voltage, the deformation non-uniformity of the outer tube decreases, the contact resistance of the joint decreases, and the tensile force increases. When the discharge voltage is higher than 16 kV, the performance of the cable intermediate joint meets the requirements.