| 摘要 |
The invention relates to a marking wheel which has a blade front part with high wearing resistance when marking lines are formed on fragile material substrates such as ceramic substrates with greater hardness than amorphous glass substrates. The invention also provides a retainer unit, a marking apparatus and a marking wheel manufacturing method. The marking wheel (40) which is used for breaking fragile material substrates (17) with greater hardness than amorphous glass substrates is formed by components made of poly-crystal CVD diamonds. Therefore, when the fragile material substrates (17) are broken, combination materials like the marking wheel made of PCD will not fall off. The marking wheel with a blade part (43) having high wearing resistance has a long service lifetime. |
