Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Brazing mixture and method for preparing diamond brazing string beads from brazing mixture
The invention discloses a brazing mixture which comprises brazing powder and/or fine-particle alloy powder, a modifier and a forming agent, wherein the modifier is high-hardness powder composed of dimolybdenum carbide and one or two of tungsten carbide, titanium diboride, titanium carbide or chromium carbide, and the use amount of the modifier is 5-20% (W/W) of the mass of the brazing powder or the fine-particle alloy powder; and the forming agent is one or two solutions of paraffin, PEG, PVA and acrylic resin which account for 2.5-4.5% of the mass of the brazing powder or the fine-particle alloy powder. Molybdenum carbide, tungsten carbide, titanium diboride, titanium carbide or chromium carbide and the like are added into the brazing mixture, so that the wear resistance of a matrix is adjusted, and meanwhile, the sintering effect can be improved; and the diamond concentration in the matrix can be conveniently and rapidly adjusted, and efficient cutting can be achieved. The invention further discloses a method for preparing the diamond brazing string beads, through efficient ball milling, destressing, deoxidizing, pelleting and the like, the granularity and morphology of brazing powder are changed, the pressing performance of the mixture is improved, and the brazing string beads are rapidly prepared in a cold pressing forming mode.
一种钎焊混合料，包括：钎焊粉和/或细颗粒合金粉末、改性剂和成形剂，所述改性剂由碳化钨、二硼化钛、碳化钛或碳化铬中一种或两种与碳化二钼组成的高硬度粉末，其用量为钎焊粉或细颗粒合金粉末质量的5～20％(W/W)；所述成形剂为占钎焊粉末或细颗粒合金粉末质量的2.5～4.5％的石蜡、PEG、PVA、丙烯酸树脂中的一种或两种溶液。该钎焊混合料加入碳化二钼与碳化钨、二硼化钛、碳化钛或碳化铬等，以调节胎体的耐磨性，同时可改善烧结效果；便于快速调节胎体中的金刚石浓度，可以实现高效切割。本发明还公开了一种制备金刚石钎焊串珠的方法，通过高效球磨、去应力、脱氧、造粒等，改变钎焊粉末粒度与形貌，改善混合料的压制性能，以冷压成形方式快速制备钎焊串珠。
Brazing mixture and method for preparing diamond brazing string beads from brazing mixture
The invention discloses a brazing mixture which comprises brazing powder and/or fine-particle alloy powder, a modifier and a forming agent, wherein the modifier is high-hardness powder composed of dimolybdenum carbide and one or two of tungsten carbide, titanium diboride, titanium carbide or chromium carbide, and the use amount of the modifier is 5-20% (W/W) of the mass of the brazing powder or the fine-particle alloy powder; and the forming agent is one or two solutions of paraffin, PEG, PVA and acrylic resin which account for 2.5-4.5% of the mass of the brazing powder or the fine-particle alloy powder. Molybdenum carbide, tungsten carbide, titanium diboride, titanium carbide or chromium carbide and the like are added into the brazing mixture, so that the wear resistance of a matrix is adjusted, and meanwhile, the sintering effect can be improved; and the diamond concentration in the matrix can be conveniently and rapidly adjusted, and efficient cutting can be achieved. The invention further discloses a method for preparing the diamond brazing string beads, through efficient ball milling, destressing, deoxidizing, pelleting and the like, the granularity and morphology of brazing powder are changed, the pressing performance of the mixture is improved, and the brazing string beads are rapidly prepared in a cold pressing forming mode.
一种钎焊混合料，包括：钎焊粉和/或细颗粒合金粉末、改性剂和成形剂，所述改性剂由碳化钨、二硼化钛、碳化钛或碳化铬中一种或两种与碳化二钼组成的高硬度粉末，其用量为钎焊粉或细颗粒合金粉末质量的5～20％(W/W)；所述成形剂为占钎焊粉末或细颗粒合金粉末质量的2.5～4.5％的石蜡、PEG、PVA、丙烯酸树脂中的一种或两种溶液。该钎焊混合料加入碳化二钼与碳化钨、二硼化钛、碳化钛或碳化铬等，以调节胎体的耐磨性，同时可改善烧结效果；便于快速调节胎体中的金刚石浓度，可以实现高效切割。本发明还公开了一种制备金刚石钎焊串珠的方法，通过高效球磨、去应力、脱氧、造粒等，改变钎焊粉末粒度与形貌，改善混合料的压制性能，以冷压成形方式快速制备钎焊串珠。
Brazing mixture and method for preparing diamond brazing string beads from brazing mixture
钎焊混合料及由其制备金刚石钎焊串珠的方法
SHE ZHICHANG (Autor:in) / ZHOU BIN (Autor:in) / YANG YUEFEI (Autor:in) / TANG HUIDE (Autor:in) / ZHEN CHUNGANG (Autor:in) / QIN GUANGMING (Autor:in)
04.01.2022
Patent
Elektronische Ressource
Chinesisch
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