| 摘要 |
PROBLEM TO BE SOLVED: To improve a coating method for mass-produced bulk articles and to provide an economical pollution-free coating method causing no penetration of harmful hydrogen into the individual bulk articles. SOLUTION: The respective surfaces of the mass-produced articles as bulk material are roughed and/or cleaned. Then coating is applied to the individual mass-produced articles. The coating is carried out by introducing the bulk material into a rotary cylinder. Subsequently, polishing is performed to uniformize the respective surfaces of the mass-produced articles as bulk material and compact the coating. |
