CN108530076B - 一种铝基碳滑板制备工艺 - Google Patents
一种铝基碳滑板制备工艺 Download PDFInfo
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Abstract
本发明公开了一种铝基碳滑板制备工艺,包括如下步骤:S1、原料,板状刚玉、白刚玉、铝粉、α‑Al2O3微粉、石墨烯、酚醛树脂;S2、混粉,将板状刚玉和白刚玉按照重量份数比为50‑60:20‑30的比例混合混匀,获得骨料;将铝粉、α‑Al2O3微粉、石墨烯按照重量份数比为10‑20:10‑20:40‑60的比例混合均匀,获得细粉;将骨料和细粉按照重量份数比为30‑40:60‑80的比例混合均匀,获得混合原料;S3、粘结,将S2中的混合原料与酚醛树脂按照重量份数比为80‑85:8‑15的比例混合均匀,使酚醛树脂将混合原料粘结;S4、模压;S5、将S4中的砖坯放入阴凉处自然干燥30‑40小时后,放入干燥窑中通过250‑300℃烘干10‑15小时;S6、将S5处理后的砖坯放入梭式窖中,在埋碳条件下升温至1300‑1600℃,并保温6‑10小时,将砖坯烧制。
Description
技术领域
本发明涉及一种制造受电弓碳滑板的工艺,特别是涉及一种铝基碳滑板制备工艺。
背景技术
电力机车的动力连接器就是受电弓碳滑板,而碳滑板的重要材料即碳滑条。其工作原理就是碳滑条与接触电网摩擦接触取电,传送给电力机车,从而来维持其正常运行。由于工作环境是在自然环境中进行,有时会暴露冻雨、冰雪在恶劣的天气中,且还在高速运行,与接触电网不断产生摩擦,在摩擦的过程会有电弧、冲击等现象的发生,因而也成为频繁更换的部件。
由此可见碳滑条材料综合性能是其必备条件,其中高强度、高韧性、低电阻、耐磨以及自润滑特性的滑动电接触材料是最佳选择。
现如今电力机车受电弓碳滑板分为三种:粉末冶金滑板、纯碳滑板、碳基复合材料滑板。而且要保证碳滑板的导电性和自润性一般都会采取浸金属工艺,但是目前的碳滑板浸金属工艺较为复杂,而且效率偏低。
因此,申请人提出一种铝基碳滑板制备工艺,其制备的碳滑板各项性能指标满足国标要求,且工艺简单、效率高。
发明内容
基于现有技术的不足,本发明提供了一种铝基碳滑板制备工艺。
具体为,本发明提供的一种铝基碳滑板制备工艺,包括如下步骤:
S1、原料,板状刚玉、白刚玉、铝粉、α-Al2O3微粉、石墨烯、酚醛树脂;
所述的板状刚玉中Al2O3含量大于99.31%(质量分数),其细度为50-80目;
所述的白刚玉中Al2O3含量大于99.12%(质量分数),其细度为50-80目;
所述的铝粉中Al含量大于99.77%(纯度),其细度为90-130目;
所述的α-Al2O3微粉中Al2O3含量99.28%(质量分数),其细度为150-220目;
所述的酚醛树脂中残碳含量不大于46%;
所述石墨烯的平均粒度为50-100目,拉伸模量≤1.01TPa,极限强度≤116Gpa;
S2、混粉,将板状刚玉和白刚玉按照重量份数比为50-60:20-30的比例混合混匀,获得骨料;
将铝粉、α-Al2O3微粉、石墨烯按照重量份数比为10-20:10-20:40-60的比例混合均匀,获得细粉;
将骨料和细粉按照重量份数比为30-40:60-80的比例混合均匀,获得混合原料;
优选地,在混合过程中可以加入适量乙醇,采用湿混的方法,这样能够使混合更加均匀,且混合完成后烘干;
S3、粘结,将S2中的混合原料与酚醛树脂按照重量份数比为80-85:8-15的比例混合均匀,使酚醛树脂将混合原料粘结;
S4、模压,将S3中混合后的混合原料放入模具中,通过650吨以上的摩擦压力机压制成30*30*200的砖坯;
S5、将S4中的砖坯放入阴凉处自然干燥30-40小时后,放入干燥窑中通过250-300℃烘干10-15小时;
S6、将S5处理后的砖坯放入梭式窖中,在埋碳条件下升温至1300-1600℃,并保温6-10小时,将砖坯烧制;
升温过程如下:
室温-400℃,15℃/h(小时);
400-800℃,25℃/h(小时);
800-1600℃,40℃/h(小时);
S7、将S6处理后的砖坯加工成碳滑板即可。
本发明的有益效果是:本发明实施起来较为简单,且成本偏低,成品具有较好的导电性能和耐磨性、自润滑性。
具体实施方式
下面结合实施例对本发明作进一步说明:
实施例一
一种铝基碳滑板制备工艺,包括如下步骤:
S1、原料,板状刚玉、白刚玉、铝粉、α-Al2O3微粉、石墨烯、酚醛树脂;
所述的板状刚玉中Al2O3含量大于99.31%,其细度为50-80目;
所述的白刚玉中Al2O3含量大于99.12%,其细度为50-80目;
所述的铝粉中Al含量大于99.77%,其细度为90-130目;
所述的α-Al2O3微粉中Al2O3含量99.28%,其细度为150-220目;
所述的酚醛树脂中残碳含量不大于46%;
所述石墨烯的平均粒度为50-100目,拉伸模量≤1.01TPa,极限强度≤116Gpa;
S2、混粉,将板状刚玉和白刚玉按照重量份数比为55:25的比例混合混匀,获得骨料;
将铝粉、α-Al2O3微粉、石墨烯按照重量份数比为15:15:50的比例混合均匀,获得细粉;
将骨料和细粉按照重量份数比为35:70的比例混合均匀,获得混合原料;
在混合过程中加入适量乙醇,采用湿混的方法,且混合完成后烘干;
S3、粘结,将S2中的混合原料与酚醛树脂按照重量份数比为82:11的比例混合均匀,使酚醛树脂将混合原料粘结;
S4、模压,将S3中混合后的混合原料放入模具中,通过650吨以上的摩擦压力机压制成30*30*200的砖坯;
S5、将S4中的砖坯放入阴凉处自然干燥35小时后,放入干燥窑中通过250-300℃烘干10-15小时;
S6、将S5处理后的砖坯放入梭式窖中,在埋碳条件下升温至1400℃,并保温8小时,将砖坯烧制;
升温过程如下:
室温-400℃,15℃/h(小时);
400-800℃,25℃/h(小时);
800-1600℃,40℃/h(小时);
S7、将S6处理后的砖坯加工成碳滑板即可。
实施例二
一种铝基碳滑板制备工艺,包括如下步骤:
S1、原料,板状刚玉、白刚玉、铝粉、α-Al2O3微粉、石墨烯、酚醛树脂;
所述的板状刚玉中Al2O3含量大于99.31%(质量分数),其细度为70目;
所述的白刚玉中Al2O3含量大于99.12%(质量分数),其细度为70目;
所述的铝粉中Al含量大于99.77%(纯度),其细度为120目;
所述的α-Al2O3微粉中Al2O3含量99.28%(质量分数),其细度为200目;
所述的酚醛树脂中残碳含量不大于46%;
所述石墨烯的平均粒度为50-100目,拉伸模量≤1.01TPa,极限强度≤116Gpa;
S2、混粉,将板状刚玉和白刚玉按照重量份数比为60:30的比例混合混匀,获得骨料;
将铝粉、α-Al2O3微粉、石墨烯按照重量份数比为18:18:55的比例混合均匀,获得细粉;
将骨料和细粉按照重量份数比为38:75的比例混合均匀,获得混合原料;
优选地,在混合过程中可以加入适量乙醇,采用湿混的方法,这样能够使混合更加均匀,且混合完成后烘干;
S3、粘结,将S2中的混合原料与酚醛树脂按照重量份数比为82:14的比例混合均匀,使酚醛树脂将混合原料粘结;
S4、模压,将S3中混合后的混合原料放入模具中,通过650吨以上的摩擦压力机压制成30*30*200的砖坯;
S5、将S4中的砖坯放入阴凉处自然干燥38小时后,放入干燥窑中通过280℃烘干12小时;
S6、将S5处理后的砖坯放入梭式窖中,在埋碳条件下升温至1500℃,并保温10小时,将砖坯烧制;
升温过程如下:
室温-400℃,15℃/h(小时);
400-800℃,25℃/h(小时);
800-1600℃,40℃/h(小时);
S7、将S6处理后的砖坯加工成碳滑板即可。
以上详细描述了本发明的较佳具体实施例。应当理解,本领域的普通技术人员无需创造性劳动就可以根据本发明的构思作出诸多修改和变化。因此,凡本技术领域中技术人员依本发明的构思在现有技术的基础上通过逻辑分析、推理或者有限的实验可以得到的技术方案,皆应在由权利要求书所确定的保护范围内。
Claims (6)
1.一种铝基碳滑板制备工艺,其特征在于,包括如下步骤:
S1、原料,板状刚玉、白刚玉、铝粉、α-Al2O3微粉、石墨烯、酚醛树脂;
S2、混粉,将板状刚玉和白刚玉按照重量份数比为50-60:20-30的比例混合混匀,获得骨料;
将铝粉、α-Al2O3微粉、石墨烯按照重量份数比为10-20:10-20:40-60的比例混合均匀,获得细粉;
将骨料和细粉按照重量份数比为30-40:60-80的比例混合均匀,获得混合原料;
S3、粘结,将S2中的混合原料与酚醛树脂按照重量份数比为80-85:8-15的比例混合均匀,使酚醛树脂将混合原料粘结;
S4、模压,将S3中混合后的混合原料放入模具中,通过650吨以上的摩擦压力机压制成砖坯;
S5、将S4中的砖坯放入阴凉处自然干燥30-40小时后,放入干燥窑中通过250-300℃烘干10-15小时;
S6、将S5处理后的砖坯放入梭式窖中,在埋碳条件下升温至1300-1600℃,并保温6-10小时,将砖坯烧制;
S7、将S6处理后的砖坯加工成碳滑板即可。
2.如权利要求1所述的制备工艺,其特征在于,所述的板状刚玉中Al2O3含量大于99.31%,其细度为50-80目;
所述的白刚玉中Al2O3含量大于99.12%,其细度为50-80目;
所述的铝粉中Al含量大于99.77%,其细度为90-130目;
所述的α-Al2O3微粉中Al2O3含量99.28%,其细度为150-220目;
所述的酚醛树脂中残碳含量不大于46%;
所述石墨烯的平均粒度为50-100目,拉伸模量≤1.01TPa,极限强度≤116Gpa。
3.如权利要求1所述的制备工艺,其特征在于,S2在混合过程中加入乙醇,采用湿混的方法,且混合完成后烘干。
4.如权利要求1所述的制备工艺,其特征在于,S6中升温过程如下:
室温-400℃,15℃/h;
400-800℃,25℃/h;
800-1600℃,40℃/h。
5.如权利要求1-3任一所述的制备工艺,其特征在于,包括如下步骤:
S1、原料,板状刚玉、白刚玉、铝粉、α-Al2O3微粉、石墨烯、酚醛树脂;
所述的板状刚玉中Al2O3含量大于99.31%,其细度为50-80目;
所述的白刚玉中Al2O3含量大于99.12%,其细度为50-80目;
所述的铝粉中Al含量大于99.77%,其细度为90-130目;
所述的α-Al2O3微粉中Al2O3含量99.28%,其细度为150-220目;
所述的酚醛树脂中残碳含量不大于46%;
所述石墨烯的平均粒度为50-100目,拉伸模量≤1.01TPa,极限强度≤116Gpa;
S2、混粉,将板状刚玉和白刚玉按照重量份数比为55:25的比例混合混匀,获得骨料;
将铝粉、α-Al2O3微粉、石墨烯按照重量份数比为15:15:50的比例混合均匀,获得细粉;
将骨料和细粉按照重量份数比为35:70的比例混合均匀,获得混合原料;
在混合过程中加入适量乙醇,采用湿混的方法,且混合完成后烘干;
S3、粘结,将S2中的混合原料与酚醛树脂按照重量份数比为82:11的比例混合均匀,使酚醛树脂将混合原料粘结;
S4、模压,将S3中混合后的混合原料放入模具中,通过650吨以上的摩擦压力机压制成30mm*30mm*200mm的砖坯;
S5、将S4中的砖坯放入阴凉处自然干燥35小时后,放入干燥窑中通过250-300℃烘干10-15小时;
S6、将S5处理后的砖坯放入梭式窖中,在埋碳条件下升温至1400℃,并保温8小时,将砖坯烧制;
升温过程如下:
室温-400℃,15℃/h;
400-800℃,25℃/h;
800-1400℃,40℃/h;
S7、将S6处理后的砖坯加工成碳滑板即可。
6.如权利要求1-3任一所述的制备工艺,其特征在于,包括如下步骤:
S1、原料,板状刚玉、白刚玉、铝粉、α-Al2O3微粉、石墨烯、酚醛树脂;
所述的板状刚玉中Al2O3含量大于99.31%,其细度为70目;
所述的白刚玉中Al2O3含量大于99.12%,其细度为70目;
所述的铝粉中Al含量大于99.77%,其细度为120目;
所述的α-Al2O3微粉中Al2O3含量99.28%,其细度为200目;
所述的酚醛树脂中残碳含量不大于46%;
所述石墨烯的平均粒度为50-100目,拉伸模量≤1.01TPa,极限强度≤116Gpa;
S2、混粉,将板状刚玉和白刚玉按照重量份数比为60:30的比例混合混匀,获得骨料;
将铝粉、α-Al2O3微粉、石墨烯按照重量份数比为18:18:55的比例混合均匀,获得细粉;
将骨料和细粉按照重量份数比为38:75的比例混合均匀,获得混合原料;
在混合过程中加入乙醇,采用湿混的方法,且混合完成后烘干;
S3、粘结,将S2中的混合原料与酚醛树脂按照重量份数比为82:14的比例混合均匀,使酚醛树脂将混合原料粘结;
S4、模压,将S3中混合后的混合原料放入模具中,通过650吨以上的摩擦压力机压制成30mm*30mm*200mm的砖坯;
S5、将S4中的砖坯放入阴凉处自然干燥38小时后,放入干燥窑中通过280℃烘干12小时;
S6、将S5处理后的砖坯放入梭式窖中,在埋碳条件下升温至1500℃,并保温10小时,将砖坯烧制;
升温过程如下:
室温-400℃,15℃/h;
400-800℃,25℃/h;
800-1500℃,40℃/h;
S7、将S6处理后的砖坯加工成碳滑板即可。
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