| 摘要 |
A knitting machine needle bed is provided with a hard wear surface by removing metal in the areas subjected to heavy wear, introducing hard material in such areas, and grinding the hardened material down to the proper level. The hard material is deposited in particulate, liquid or vapor form and becomes substantially integral with the base. If combining teeth are to be inserted, the hard material is ground away in the appropriate areas, which are then slotted for the insertion of the combining teeth.
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