To remove an existing padding material quickly without causing any trouble such as cracks on a base material of a crushing member such as a crushing roller.
A degraded padded section is removed by scanning a worn existing padding material 8 of crushing members 1, 12 by an arc 5 of a plasma gauging device 3 while securing a remained padding material 9 having a designated thickness t from a worn surface 6 of a base material 2. The existing padding material 8 is difficult to remove with a general rotary grinding wheel since consisting of a raw material with high wear resistance and having hardness further increased by a work-hardening phenomenon, however, the arc 5 can shortly remove the existing padding material 8 at high removing efficiency. Furthermore, the trouble such as breaking and cracks on the base material 2 caused by processing heat and fusion heat can be prevented to the utmost extent since the remained padding material 9 exerts an effect of a heat shielding material for preventing excessive transmission of the processing heat by the arc 5 and the fusion heat upon melting a newly-established padding material 10 to the base material 2.
| JPS62207579A | 1987-09-11 | |||
| JP2004025235A | 2004-01-29 | |||
| JP2010173027A | 2010-08-12 | |||
| JP2007216101A | 2007-08-30 | |||
| JPH071148A | 1995-01-06 | |||
| JP2000275384A | 2000-10-06 | |||
| JPS4937841A | 1974-04-08 | |||
| JPS62207579A | 1987-09-11 | |||
| JP2004025235A | 2004-01-29 | |||
| JP2010173027A | 2010-08-12 |
| US6280370B1 | 2001-08-28 | |||
| US6280370B1 | 2001-08-28 |
Higashio Masahiro
Takayoshi Tagawa
Takashi Shimizu