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首页> 外文会议>International Conference on Materials Science and Technologies >Focus on carbide-tipped circular saws when cutting stainless steel and special alloys
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Focus on carbide-tipped circular saws when cutting stainless steel and special alloys

机译：切割不锈钢和特殊合金时，专注于碳化物圆锯

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Circular saw blades are used exclusively for cut-off work, ranging from small manual feed operations, up to very large power fed saws commonly used for sectioning stock as it comes from a rolling mill or other manufacturing processes for long products. The teeth profile, as well as the tooth configuration are of fundamental importance for the blade performances; through a combination of blade rigidity and grinding wheel condition a good quality surface finish is attained for tools of commercial standard. The materials used for the production of circular saw blades are ranging from high speed steel to cemented carbides. In particular, cemented carbides, being characterized by high hardness and strength, are used in applications where materials with high wear resistance and toughness are required. The main constituents of cemented carbides are tungsten carbide and cobalt. Tungsten carbide imparts the alloys the necessary strength and wear resistance, whereas cobalt contributes to the toughness and ductility of the alloys. The WC-Co alloys are tailored for specific applications by the proper choice of tungsten carbide grain size and the cobalt content. The grain size of the tungsten carbide in WC-Co varies from about 40 urn to around 0.3 μm, the cobalt content from 3 to 30 wt%. The coarse grained hard metals are mainly used in mining applications, the smallest grain size being about 3 urn and the minimum cobalt content 6 wt%. The grain size of tungsten carbide in the metal cutting industry, as well as for universal applications lies in the range of 1-2 μm. However, with the advent of near net shape manufacturing and thin walled components, the use of submicron carbide is growing, since their high compressive strength and abrasive wear resistance can be used to produce tools with a sharp cutting edge and a large positive rake angle. In this paper, a general overview on the actual trends in the choice of the best material when cutting special alloys will be presented and discussed. Based on the recent and past literature some examples of their up-to-date application, such as circular saws used to cut stainless steels and some high strength alloys, are talk over.
机译：圆锯锯片专门用于截止工作，从小手动进料操作，直到非常大的电力供给锯，通常用于切割股票，因为它来自轧机或长产品的其他制造工艺。牙齿轮廓以及牙齿结构对叶片性能具有根本的重要性;通过叶片刚度和磨轮条件的组合，可以获得优质的表面光洁度，用于商业标准的工具。用于生产圆锯叶片的材料从高速钢到粘合的碳化物。特别地，在需要高耐磨性和韧性的材料中使用粘合的碳化物，其特征在于高硬度和强度。水泥碳化物的主要成分是碳化钨和钴。碳化钨赋予合金必要的强度和耐磨性，而钴则有助于合金的韧性和延展性。 The WC-Co alloys are tailored for specific applications by the proper choice of tungsten carbide grain size and the cobalt content. WC-CO中碳化钨的晶粒尺寸从约40μm变化至约0.3μm，钴含量为3至30重量％。粗粒硬质金属主要用于采矿应用，最小的粒度为约3瓮和最小钴含量6wt％。金属切削工业中钨碳化钨的粒度，以及通用应用位于1-2μm的范围内。然而，随着近期净形制造和薄壁部件的出现，亚微米碳化物的使用正在增长，因为它们的高抗压强度和磨料耐磨性可用于生产具有尖锐切削刃的工具和大的正耙角度。本文展示并讨论了在切割特殊合金时选择最佳材料的实际趋势的一般性概述。基于近期和过去的文献，他们最新应用的一些示例，例如用于切割不锈钢和一些高强度合金的圆锯和一些高强度合金。

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