Bending strength of porous metal-bond diamond wheel segment
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摘要: 为平衡多孔金属结合剂的孔隙率和磨削强度,使用不同质量配比的造孔剂和钎料、不同粒度尺寸和浓度的金刚石磨料制备砂轮节块并测试其抗弯强度。实验结果表明:造孔剂会削弱节块的抗弯强度,而钎料能增加节块的抗弯强度;金刚石磨粒对节块的抗弯强度影响较小,金刚石颗粒越细,节块的抗弯强度越高。根据实际生产要求调节原料配比,可以在满足磨削强度要求的同时保证最佳孔隙率。Abstract: To balance the intensity and porosity of porous metal-bond,different mass fractions of pore formers and brazing fillers,as well as diamonds with different sizes and contents,are made into metalbond segements to test their bending strength.The results show that pore formers will dent the bending strength while brazing fillers consolidate the strength.As with the diamonds,it is found that segments with finer diamonds are difficult to break up.In conclusion,adjusting the ratio of raw materials would satisfy requirements on intensity with optimized porosity.
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Key words:
- porous metal bond /
- diamond wheel /
- segment /
- bending strength
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