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您的位置:Guangzhou JeeFoo Tools Co.,Ltd >> 技术文章

木工刀具的材料

发布时间:2013-08-08

在机床能力确定条件下,刀具的磨损、切削质量、其劳动生产率基本上取决于其本身材料所能发挥的切削性能。
***木工刀具的特点是要求在高速并且承受冲击载荷的切削条件下,长时间保持切削的锐利性能。为此,木工刀具的材料,必须具备必要的硬度和耐磨性,足够的强度和韧性,一定的工艺性(如焊接、热处理、切削加工和磨削加工性能等)条件。
  **目前能满足要求的主要材料:

1.碳素工具钢(碳工钢)    是指含碳量在0.65--1.35%的优质高碳钢,如T8、T8A、T10A等(二) 合金工具钢(合工钢) 2.合金工具钢  在工具钢中加入Cr、W、Ni、V、Co、Mo、Si、Mn等合金元素便成为,如9CrSi, CrWMn等。(三) 高速钢 3.高速钢,又称锋钢  提高合金钢中W、Cr、V、Mo等的含量. 4. 硬质合金  由硬度极高,难熔的金属碳化物(WC,TiC),用Co、Mo、Ni等做粘结剂烧结而成的粉末冶金制品。  5.立方氮化硼(CBN) 是一种硬度仅低于金刚石的新型超硬材料,它是高温高压方法制成的。

刀具材料的合理选择:

1.碳素工具钢一般用于制造锯和刨刀等刀具。
2.合金工具钢广泛用于机用木工刀具、人造板加工中使用的刀具以及带锯条和圆锯片。 3.高速钢(如W18Cr4V等)用于高生产率的木工机床使用的刀具如刨刀、铣刀等(为避免刀磨钝后换刀的麻烦)。

注意以下几点:

1.木工刀具应选用韧性较大的YG类硬质合金。
2. YG 类中有粗颗粒、细颗粒和一般颗粒之分。3.硬质合金较脆,只有按其牌号和被加工材料、进给速度等切削条件,合理地选择楔角后才能用于木材加工
4. 正确地选择硬质合金的牌号后,还要合理地选择硬质合金制品的型号,即选择制品的形状。

 



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