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Preparation methods of two-dimensional silicon carbide/silicon carbide composite material bar and two-dimensional silicon carbide/silicon carbide composite material connecting piece
The invention relates to a preparation method of a composite material fastener, in particular to a preparation method of a two-dimensional silicon carbide/silicon carbide composite material bar and a preparation method of a two-dimensional silicon carbide/silicon carbide composite material connecting piece, wherein the methods are mainly applied to connection and assembly of ultrahigh-temperature, high-strength and antioxidant composite material products. According to the invention, the defects that an existing three-dimensional needling carbon/silicon carbide composite material bolt is long in production period, uneven in density, large in performance difference and the like are overcome; the prefabricated body for machining a bar blank is formed by riveting multiple layers of two-dimensional silicon carbide/silicon carbide composite material blank flat plates, wherein due to the fact that the thickness of the single-layer two-dimensional silicon carbide/silicon carbide composite material blank flat plate is within the range of 3-6 mm, when a SiC matrix is deposited, the density of all parts can be kept consistent, and the SiC/B4C matrix is adopted in the bar blank deposition process, so that the density uniformity of the bar blank can be further improved; and compared with the existing preparation method of the carbon/silicon carbide composite material bolt, the preparation method of the silicon carbide/silicon carbide composite material bolt has the advantage that the shearing strength of the bolt is obviously improved to 240-320 Mpa.
本发明涉及一种复合材料紧固件制备方法，尤其涉及一种二维碳化硅/碳化硅复合材料棒料及连接件制备方法，主要应用于超高温、高强度、抗氧化复合材料产品的连接装配。克服现有三维针刺碳/碳化硅复合材料螺栓生产周期长、密度不均导致性能差异大等缺点，本发明加工棒料毛坯的预制体是由多层二维碳化硅/碳化硅复合材料毛坯平板铆接而成，由于单层二维碳化硅/碳化硅复合材料毛坯平板的厚度位于3～6mm区间，使得在沉积SiC基体时，各个部位密度能够保持一致，同时棒料毛坯沉积过程采用SiC/B4C基体，可以进一步提高棒料毛坯密度均匀性；与现有碳/碳化硅复合材料螺栓制备方法相比，采用本发明中碳化硅/碳化硅复合材料螺栓制备方法后螺栓剪切强度明显提升至240～320Mpa。
Preparation methods of two-dimensional silicon carbide/silicon carbide composite material bar and two-dimensional silicon carbide/silicon carbide composite material connecting piece
The invention relates to a preparation method of a composite material fastener, in particular to a preparation method of a two-dimensional silicon carbide/silicon carbide composite material bar and a preparation method of a two-dimensional silicon carbide/silicon carbide composite material connecting piece, wherein the methods are mainly applied to connection and assembly of ultrahigh-temperature, high-strength and antioxidant composite material products. According to the invention, the defects that an existing three-dimensional needling carbon/silicon carbide composite material bolt is long in production period, uneven in density, large in performance difference and the like are overcome; the prefabricated body for machining a bar blank is formed by riveting multiple layers of two-dimensional silicon carbide/silicon carbide composite material blank flat plates, wherein due to the fact that the thickness of the single-layer two-dimensional silicon carbide/silicon carbide composite material blank flat plate is within the range of 3-6 mm, when a SiC matrix is deposited, the density of all parts can be kept consistent, and the SiC/B4C matrix is adopted in the bar blank deposition process, so that the density uniformity of the bar blank can be further improved; and compared with the existing preparation method of the carbon/silicon carbide composite material bolt, the preparation method of the silicon carbide/silicon carbide composite material bolt has the advantage that the shearing strength of the bolt is obviously improved to 240-320 Mpa.
本发明涉及一种复合材料紧固件制备方法，尤其涉及一种二维碳化硅/碳化硅复合材料棒料及连接件制备方法，主要应用于超高温、高强度、抗氧化复合材料产品的连接装配。克服现有三维针刺碳/碳化硅复合材料螺栓生产周期长、密度不均导致性能差异大等缺点，本发明加工棒料毛坯的预制体是由多层二维碳化硅/碳化硅复合材料毛坯平板铆接而成，由于单层二维碳化硅/碳化硅复合材料毛坯平板的厚度位于3～6mm区间，使得在沉积SiC基体时，各个部位密度能够保持一致，同时棒料毛坯沉积过程采用SiC/B4C基体，可以进一步提高棒料毛坯密度均匀性；与现有碳/碳化硅复合材料螺栓制备方法相比，采用本发明中碳化硅/碳化硅复合材料螺栓制备方法后螺栓剪切强度明显提升至240～320Mpa。
Preparation methods of two-dimensional silicon carbide/silicon carbide composite material bar and two-dimensional silicon carbide/silicon carbide composite material connecting piece
二维碳化硅/碳化硅复合材料棒料及连接件制备方法
ZHANG SHAOBO (author) / MA WENKE (author) / KANG ZHIJIE (author) / SONG HAILONG (author) / ZHANG JIE (author) / ZHANG WEIQIANG (author) / LI RENYI (author) / LIU KAI (author) / SHI SITAO (author) / WANG PENG (author)
2021-12-21
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
F16B
DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES
,
Vorrichtungen zum Befestigen oder Sichern von Konstruktionselementen oder Maschinenteilen, z.B. Nägel, Bolzen, Schrauben, Sprengringe, Klemmen, Klammern oder Keile
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