| 摘要 |
PURPOSE: To obtain a magnetic disk driving device which extremely lessens the corrosion of soldered parts after soldering, a magnetic disk and a magnetic head and capable of easily and completely removing a flux after soldering with water by devising the compsn. of the solder to be used, and a process for production of this device. CONSTITUTION: A magnetic disk device has a frame 1, a stator core 10, a driving coil 11, a stator set 12 having a substrate 2 and a rotor set 16 having a hub 17 rotationally driven together with a magnet 15 disposed to face the stator core. The solder 3 for connecting a driving coil terminal 4 to the substrate includes a solder material consisting of tin and lead a vehicle consisting of a polyether resin or polyether resin and alcohol solvent. The junctures by the solder are washed with water after the soldering process. |
