Propeller shaft journal of ship diesel engine Journal coating method

摘要

The present invention relates to an arc spray coating method for ship propeller shafts. In the past, when the surface hardening portion is worn beyond the limit by the long-term use, the epoxy is mixed with a hardener to form a grass puff, The former is reduced in diameter due to the quartz grinding and becomes a contact size. Therefore, there is a tendency that the surface is thin and the thickness of the bearing becomes thin and the water is submerged. Followed.;The latter is a means for solving the above-mentioned problem. When the electric power supplied to the DC power source is connected to the two wires or bars by the anode and the cathode and the end of the wire rod is melted by the electric arc generated by the contact of the rod, It is possible to spray uniformly on the surface of the propeller shaft journal with high thermal strength of the flame, fast spraying, no deformation, higher strength than the existing coating.