CN107445637A - 一种C/SiC新型机械密封环的制造方法 - Google Patents
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Abstract
本发明涉及一种C/SiC新型机械密封环的制造方法,通过制备碳纤维预制体、多孔C/C复合材料、预加工得到多孔密封环坯体、渗硅处理、预加工得到致密的密封环坯体、SiC涂层、精加工等制得C/SiC机械密封环。该材料具有致密、高强度、高韧性、高硬度、耐高温、耐腐蚀和耐磨性等性能,可以使密封环的寿命延长,减少拆换次数,降低使用成本,提高效率。本发明工艺简单、重复性好,适于批量生产。
Description
技术领域:
本发明涉及一种机械密封环的制造方法,特别是涉及一种C/SiC机械密封环的制造方法。
背景技术:
随着工程技术的发展,石油化工、原子能、船舶、宇航和机械制造等领域对机械密封提出了越来越高的要求,要能在高速、高压、高温、低温、强腐蚀及含固体颗粒等苛刻条件下长期稳定运转。目前,为了满足这些苛刻环境的使用要求,通常采用SiC、Si3N4、Al2O3等陶瓷密封。这些陶瓷密封虽然能满足这些苛刻环境的使用要求,但陶瓷固有的脆性导致其服役可靠性差,为了提高陶瓷密封的使用可靠性,必须解决陶瓷固有的脆性。
为了解决陶瓷的脆性,发展了复相陶瓷、纤维增韧陶瓷基复合材料(CMCs)以及层状陶瓷等三大体系。其中复相陶瓷和层状陶瓷的韧性提高有限,可靠性仍然有限。CMCs从根本上解决了陶瓷材料的脆性问题,但是常规的CMCs,由于其致密度不高,无法满足密封要求,而且密封面无法加工到光洁度不大于0.1μm的使用要求。为此,本发明提出一种C/SiC复合材料机械密封环的制备方法,既能提高陶瓷材料韧性,又能提高材料致密度,而且能实现密封面光洁度小于0.1μm的使用要求。
发明内容:
本发明主要涉及三维针刺碳纤维预制体的制备、多孔C/C复合材料的制备、渗硅处理、SiC涂层制备等。本发明的技术方案,主要包括以下几个步骤:
步骤1,碳纤维预制体的制备
将若干层的单层0°无纬布、胎网、90°无纬布、胎网依次循环叠加到碳纤维预制体的厚度,并通过接力针刺制备出碳纤维预制体;针刺密度为25~30针/cm2,体积密度为0.5~0.55g/cm3,其中胎网层与无纬布层的体积比为1∶2~1∶5。
步骤2,多孔C/C复合材料的制备
以丙烯或天然气作为反应气体,通过化学气相沉积工艺在步骤1制备的碳纤维预制体内沉积PyC(热解碳),沉积温度为930~1100℃,沉积时间为200~400h,制备出密度为1.2~1.6g/cm3的多孔碳/碳复合材料。
步骤3:预加工1
对步骤2制备的多孔C/C复合材料进行机加工,获得密封环坯体。加工时除厚度方向单面预留0.3mm~0.5mm的余量外,其余尺寸完全按照密封环图纸要求。
步骤4:渗硅处理
将步骤3预加工好的密封环坯体在真空炉中进行渗硅处理,浸渗温度:1550~1600℃,保温时间:1~2h,获得密度为2.1~2.4g/cm3,开孔隙率小于1%的C/SiC密封环坯体。
步骤5:预加工2
对步骤4制备的C/SiC密封环坯体的厚度方向(也就是密封环的摩擦面)均匀磨削加工,加工后,厚度尺寸比图纸要求尺寸小0.08~0.1mm。
步骤6:沉积SiC涂层
将步骤5加工后的密封环的非摩擦面通过石墨纸进行保护,并置于化学气相沉积炉,以三氯甲基硅烷作为反应气体,在密封环的摩擦面沉积SiC陶瓷涂层,沉积温度为1000~1200℃,沉积时间为200~300h,制得厚度约为0.1~0.15mm的SiC涂层。
步骤7:精加工
将步骤6制备的带有SiC涂层的密封环坯体的摩擦面进行精磨加工,并进行抛光处理,达到图纸要求的尺寸精度和表面光洁度(不大于0.1μm),制得C/SiC机械密封环。
利用本发明制得C/SiC机械密封环的弯曲强度为~180MPa,断裂热性为~12MPa·m1/2,表面硬度为~21GPa,表面光洁度~0.10.1μm,具有优良的力学性能。
本发明的主要优点是:(1)通过化学气相沉积工艺结合渗硅工艺可获得大尺寸(厚度大于10mm,其余尺寸不限。)的致密结构C/SiC复合材料,在多孔状态对坯体进行加工,降低C/SiC构件的加工难度和成本。(2)C/SiC陶瓷密封环耐腐蚀,耐高温,耐磨损,尤其是强度高、韧性好,用做苛刻环境的机械密封环,可以使密封环的寿命延长,减少拆换次数,降低使用成本,提高效率。(3)工艺简单、重复性好,适于批量生产。
具体实施方式:
实施例一:
步骤1,碳纤维预制体的制备
将若干层的单层0°无纬布、胎网、90°无纬布、胎网依次循环叠加到设计的厚度,并通过接力针刺制备出设计的碳纤维预制体;针刺密度为25针/cm2,体积密度为0.5g/cm3,其中胎网层与无纬布层的体积比约为1∶3。
步骤2,多孔C/C复合材料的制备
以丙烯或天然气作为反应气体,通过化学气相沉积工艺在步骤1制备的碳纤维预制体内沉积PyC(热解碳),沉积温度为930℃,沉积时间为400h,制备出密度为~1.4g/cm3的多孔碳/碳复合材料。
步骤3:预加工1
对步骤2制备的多孔碳/碳复合材料进行机加工,获得密封环坯体。加工时除厚度方向单面预留0.3mm的余量外,其余尺寸完全按照密封环图纸要求。
步骤4:渗硅处理
将步骤3预加工好的密封环坯体在真空炉中进行渗硅处理,浸渗温度:1550℃,保温时间:2h,获得密度为~2.2g/cm3,开孔隙率~1%的C/SiC密封环坯体。
步骤5:预加工2
对步骤4制备的C/SiC密封环坯体的厚度方向(也就是密封环的摩擦面)均匀磨削加工,加工后,厚度尺寸比图纸要求尺寸小0.08mm。
步骤6:沉积SiC涂层
将步骤5加工后的密封环的非摩擦面通过石墨纸进行保护,并置于化学气相沉积炉,以三氯甲基硅烷作为反应气体,在密封环的摩擦面沉积SiC陶瓷涂层,沉积温度为1050℃,沉积时间为300h,制得厚度约为0.1mm的SiC涂层。
步骤7:精加工
将步骤6制备的带有SiC涂层的密封环坯体的摩擦面进行精磨加工,并进行抛光处理,达到图纸要求的尺寸精度和表面光洁度,制得C/SiC机械密封环。
该C/SiC机械密封环材料的弯曲强度~160Mpa,断裂韧性~10MPa·m1/2,表面硬度20GPa,表面光洁度0.1μm。
实施例二:
步骤1,碳纤维预制体的制备
将若干层的单层0°无纬布、胎网、90°无纬布、胎网依次循环叠加到设计的厚度,并通过接力针刺制备出设计的碳纤维预制体;针刺密度为30针/cm2,体积密度为0.55g/cm3,其中胎网层与无纬布层的体积比约为1∶3。
步骤2,多孔C/C复合材料的制备
以丙烯或天然气作为反应气体,通过化学气相沉积工艺在步骤1制备的碳纤维预制体内沉积PyC(热解碳),沉积温度为1100℃,沉积时间为300h,制备出密度为~1.4g/cm3的多孔碳/碳复合材料。
步骤3:预加工1
对步骤2制备的多孔C/SiC复合材料进行机加工,获得密封环坯体。加工时除厚度方向单面预留0.3mm的余量外,其余尺寸完全按照密封环图纸要求。
步骤4:渗硅处理
将步骤3预加工好的密封环坯体在真空炉中进行渗硅处理,浸渗温度:1600℃,保温时间:1h,获得密度为~2.4g/cm3,开孔隙率~1%的C/SiC密封环坯体。
步骤5:预加工2
对步骤4制备的C/SiC密封环坯体的厚度方向(也就是密封环的摩擦面)均匀磨削加工,加工后,厚度尺寸比图纸要求尺寸小~0.1mm。
步骤6:沉积SiC涂层
将步骤5加工后的密封环的非摩擦面通过石墨纸进行保护,并置于化学气相沉积炉,以三氯甲基硅烷作为反应气体,在密封环的摩擦面沉积SiC陶瓷涂层,沉积温度为1200℃,沉积时间为300h,制得厚度约为~0.15mm的SiC涂层。
步骤7:精加工
将步骤6制备的带有SiC涂层的密封环坯体的摩擦面进行精磨加工,并进行抛光处理,达到图纸要求的尺寸精度和光洁度,制得C/SiC机械密封环。
该C/SiC机械密封环材料的弯曲强度~180Mpa,断裂韧性~12MPa·m1/2,表面硬度21GPa,表面光洁度0.1μm。
Claims (6)
1.一种C/SiC新型机械密封环的制造方法,该方法包括以下主要步骤:
步骤1,碳纤维预制体的制备
将若干层的单层0°无纬布、胎网、90°无纬布、胎网依次循环叠加到碳纤维预制体的厚度,并通过接力针刺制备出碳纤维预制体;针刺密度为25~30针/cm2,体积密度为0.5~0.55g/cm3,其中胎网层与无纬布层的体积比为1∶2~1∶5;
步骤2,多孔C/C复合材料的制备
以丙烯或天然气作为反应气体,通过化学气相沉积工艺在步骤1制备的碳纤维预制体内沉积PyC(热解碳),沉积温度为930~1100℃,制备出密度为1.2~1.6g/cm3的多孔碳/碳复合材料;
步骤3,预加工1
对步骤2制备的多孔C/C复合材料进行机加工,获得密封环坯体。加工时除厚度方向单面预留的余量外,其余尺寸完全按照密封环图纸要求;
步骤4,渗硅处理
将步骤3预加工好的密封环坯体在真空炉中进行渗硅处理,浸渗温度:1550~1600℃,保温,获得密度为2.1~2.4g/cm3,开孔隙率小于1%的C/SiC密封环坯体;
步骤5,预加工2
对步骤4制备的C/SiC密封环坯体的厚度方向(也就是密封环的摩擦面)均匀磨削加工,加工后,厚度尺寸比图纸要求尺寸小;
步骤6,沉积SiC涂层
将步骤5加工后的密封环的非摩擦面通过石墨纸进行保护,并置于化学气相沉积炉,以三氯甲基硅烷作为反应气体,在密封环的摩擦面沉积SiC陶瓷涂层,沉积温度为1000~1200℃,制得厚度约为0.1~0.15mm的SiC涂层;
步骤7,精加工
将步骤6制备的带有SiC涂层的密封环坯体的摩擦面进行精磨加工,并进行抛光处理,达到图纸要求的尺寸精度和表面光洁度(不大于0.1μm),制得C/SiC机械密封环。
2.根据权利要求1所述的C/SiC新型机械密封环的制造方法,其特征在于步骤2中所述的多孔C/C复合材料的热解碳沉积时间为200~400h。
3.根据权利要求1或2所述的C/SiC新型机械密封环的制造方法,其特征在于步骤3中所述的加工厚度方向单面预留余量为0.3~0.5mm。
4.根据权利要求1-3之一所述的C/SiC新型机械密封环的制造方法,其特征在于步骤4中所述的渗硅保温时间为1~2h。
5.根据权利要求1-4之一所述的C/SiC新型机械密封环的制造方法,其特征在于步骤5中所述的厚度尺寸比图纸要求尺寸小0.08~0.1mm。
6.根据权利要求1-5之一所述的C/SiC新型机械密封环的制造方法,其特征在于步骤6中所述的沉积时间为200~300h。
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Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102775176A (zh) * | 2012-07-18 | 2012-11-14 | 西安鑫垚陶瓷复合材料有限公司 | 三维针刺碳/碳化硅复合材料螺栓的制备方法 |
-
2016
- 2016-10-12 CN CN201610910152.4A patent/CN107445637A/zh active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102775176A (zh) * | 2012-07-18 | 2012-11-14 | 西安鑫垚陶瓷复合材料有限公司 | 三维针刺碳/碳化硅复合材料螺栓的制备方法 |
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