Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Carbon/carbon throat liner near-net forming and surface directional densification anti-ablation method
The invention provides a near-net forming and surface directional densification anti-ablation method for a carbon/carbon throat liner. The near-net forming and surface directional densification anti-ablation method comprises the following steps: preparing a preform; performing high-temperature treatment on the preform; performing isothermal chemical vapor deposition densification on the preform; turning into a circular ring body; turning and removing high-density crusts on the surface of the inner hole; the prefabricated body is placed in an isothermal chemical vapor deposition furnace to be densified; turning the section of the inner hole into a trapezoid; performing isothermal chemical vapor deposition densification, and basically turning the pneumatic molded surface in place on the basis of the trapezoidal section; transferring into a high-temperature furnace, and carrying out graphitization treatment; resin impregnation, carbonization and densification are carried out; the pneumatic molded surface of the throat liner is completely turned in place; carrying out graphitization treatment; performing isothermal chemical vapor deposition densification treatment on the qualified throat liner; transferring into a high-temperature furnace, and carrying out graphitization treatment; and the throat liner in the complete state is bonded with the back wall heat insulation layer and the metal supporting piece. According to the invention, the ablation rate of the throat liner can be effectively reduced, and the preparation period of the product is shortened.
本发明提供一种碳/碳喉衬近净成型及表面定向增密抗烧蚀方法，包括如下步骤：预制体的制备；预制体高温处理；预制体的等温化学气相沉积增密；车削为圆环体；将内孔表面高密度″结壳″车削去除；将预制体置于等温化学气相沉积炉内进行增密；将内孔截面车削为梯形；等温化学气相沉积增密，在梯形截面基础之上将气动型面基本车削到位；转入高温炉内，进行石墨化处理；转入树脂浸渍碳化增密；将喉衬气动型面完全车削到位；进行石墨化处理；对合格的喉衬进行等温化学气相沉积增密处理；转入高温炉内，进行石墨化处理；将完全状态喉衬与背壁绝热层、金属支撑件进行粘接。本发明可以在有效降低喉衬烧蚀率的同时，压缩产品制备周期。
Carbon/carbon throat liner near-net forming and surface directional densification anti-ablation method
The invention provides a near-net forming and surface directional densification anti-ablation method for a carbon/carbon throat liner. The near-net forming and surface directional densification anti-ablation method comprises the following steps: preparing a preform; performing high-temperature treatment on the preform; performing isothermal chemical vapor deposition densification on the preform; turning into a circular ring body; turning and removing high-density crusts on the surface of the inner hole; the prefabricated body is placed in an isothermal chemical vapor deposition furnace to be densified; turning the section of the inner hole into a trapezoid; performing isothermal chemical vapor deposition densification, and basically turning the pneumatic molded surface in place on the basis of the trapezoidal section; transferring into a high-temperature furnace, and carrying out graphitization treatment; resin impregnation, carbonization and densification are carried out; the pneumatic molded surface of the throat liner is completely turned in place; carrying out graphitization treatment; performing isothermal chemical vapor deposition densification treatment on the qualified throat liner; transferring into a high-temperature furnace, and carrying out graphitization treatment; and the throat liner in the complete state is bonded with the back wall heat insulation layer and the metal supporting piece. According to the invention, the ablation rate of the throat liner can be effectively reduced, and the preparation period of the product is shortened.
本发明提供一种碳/碳喉衬近净成型及表面定向增密抗烧蚀方法，包括如下步骤：预制体的制备；预制体高温处理；预制体的等温化学气相沉积增密；车削为圆环体；将内孔表面高密度″结壳″车削去除；将预制体置于等温化学气相沉积炉内进行增密；将内孔截面车削为梯形；等温化学气相沉积增密，在梯形截面基础之上将气动型面基本车削到位；转入高温炉内，进行石墨化处理；转入树脂浸渍碳化增密；将喉衬气动型面完全车削到位；进行石墨化处理；对合格的喉衬进行等温化学气相沉积增密处理；转入高温炉内，进行石墨化处理；将完全状态喉衬与背壁绝热层、金属支撑件进行粘接。本发明可以在有效降低喉衬烧蚀率的同时，压缩产品制备周期。
Carbon/carbon throat liner near-net forming and surface directional densification anti-ablation method
一种碳/碳喉衬近净成型及表面定向增密抗烧蚀方法
WANG HAORAN (Autor:in) / YAN KEFEI (Autor:in) / WANG JIANFEI (Autor:in) / GAO HAOZE (Autor:in) / FAN ZHE (Autor:in) / ZHANG CHUAN (Autor:in) / ZHU LI (Autor:in) / ZHAO MENG (Autor:in)
09.08.2024
Patent
Elektronische Ressource
Chinesisch
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