CN108610082A - 一种碳纤维增强受电弓碳滑板的制备工艺 - Google Patents
一种碳纤维增强受电弓碳滑板的制备工艺 Download PDFInfo
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Abstract
本发明公开了一种碳纤维增强受电弓碳滑板的制备工艺,包括如下步骤:S1、原料;S2、鳞片状石墨粉、针状焦粉、改质煤沥青按照重量份数比为60‑80:20‑30:40‑50的比例混合均匀,然后加热至100‑140℃,倒入造粒机中进行造粒,要求粒径在50‑80㎜之间;S3、将S2制造的颗粒放入焙烧炉中,充入氮气作为保护气、升温至3000℃,并保持120‑160小时;S4、将S3的石墨颗粒打碎至细度为90‑100目的细粉,获得混合石墨粉;S5、将混合石墨粉、碳纤维、铜粉、二硫化钼、酚醛树脂按照重量份数比为20‑26:10‑15:5‑8:3‑4:30‑38取出并均匀混合,然后将其和模具预热到100‑120℃,再将上述混合的材料倒入模具中;S6、将S5中的模具放入模压机中,加热至200‑250℃,通过60‑80MPa的压力模压成型,压紧时间30‑50min,获得砖坯。
Description
技术领域
本发明涉及一种制造受电弓碳滑板的工艺,特别是涉及一种碳纤维增强受电弓碳滑板的制备工艺。
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,申请人提出一种碳纤维增强受电弓碳滑板的制备工艺,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,本发明提供了一种碳纤维增强受电弓碳滑板的制备工艺。
具体为,本发明提供的一种碳纤维增强受电弓碳滑板的制备工艺,包括如下步骤:
S1、原料,铜粉、鳞片状石墨粉、针状焦粉、碳纤维、酚醛树脂、改质煤沥青、二硫化钼;
所述鳞片状石墨粉、二硫化钼、碳纤维、针状焦粉平均粒度90-130目;
所述铜粉的平均粒度90-130目,密度为8.92×103/cm3;
所述改质煤沥青的软化点为90-100℃,结焦值为≥55%,灰分≤0.20%;
S2、鳞片状石墨粉、针状焦粉、改质煤沥青按照重量份数比为60-80:20-30:40-50的比例混合均匀,然后加热至100-140℃,倒入造粒机中进行造粒,要求粒径在50-80㎜之间;
S3、将S2制造的颗粒放入焙烧炉中,充入氮气作为保护气、按照以下升温方式升温至3000℃,并保持120-160小时,以进行石墨化;
室温-400℃,按照40℃/h升温,达到400℃后保持1h;
400-1000℃,按照30℃/h升温,达到1000℃后保持1h;
1000℃-1800℃,按照5℃/h升温,达到1800℃后保持3h;
1800℃-2600℃,按照按照10℃/h升温,达到2600℃后保持2h;
2600℃-3000℃,自由升温,达到3000℃后保持120-160h;
然后在焙烧炉中按照60℃/h的速度降温至室温后取出,获得石墨颗粒;
S4、将S3的石墨颗粒打碎至细度为90-100目的细粉,获得混合石墨粉;
S5、将混合石墨粉、碳纤维、铜粉、二硫化钼、酚醛树脂按照重量份数比为20-26:10-15:5-8:3-4:30-38取出并均匀混合,然后将其和模具预热到100-120℃,再将上述混合的材料倒入模具中,保持100-120℃,时间10-12min;
S6、将S5中的模具放入模压机中,加热至200-250℃,通过60-80MPa的压力模压成型,压紧时间30-50min,获得砖坯,并放入焙烧炉中通过1000℃高温烧结20-30小时;
砖坯尺寸为30*30*200毫米,且其压缩率为60%-70%;
S7、将S6处理后的砖坯进行加工,获得碳滑板。
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
一种碳纤维增强受电弓碳滑板的制备工艺,包括如下步骤:
S1、原料,铜粉、鳞片状石墨粉、针状焦粉、碳纤维、酚醛树脂、改质煤沥青、二硫化钼;
所述鳞片状石墨粉、二硫化钼、碳纤维、针状焦粉平均粒度90-130目;
所述铜粉的平均粒度90-130目,密度为8.92×103/cm3;
所述改质煤沥青的软化点为90-100℃,结焦值为≥55%,灰分≤0.20%;
S2、鳞片状石墨粉、针状焦粉、改质煤沥青按照重量份数比为70:25:45的比例混合均匀,然后加热至120℃,倒入造粒机中进行造粒,要求粒径在60㎜左右;
S3、将S2制造的颗粒放入焙烧炉中,充入氮气作为保护气、按照以下升温方式升温至3000℃,并保持150小时,以进行石墨化;
室温-400℃,按照40℃/h升温,达到400℃后保持1h;
400-1000℃,按照30℃/h升温,达到1000℃后保持1h;
1000℃-1800℃,按照5℃/h升温,达到1800℃后保持3h;
1800℃-2600℃,按照按照10℃/h升温,达到2600℃后保持2h;
2600℃-3000℃,自由升温,达到3000℃后保持150h;
然后在焙烧炉中按照60℃/h的速度降温至室温后取出,获得石墨颗粒;
S4、将S3的石墨颗粒打碎至细度为100目的细粉,获得混合石墨粉;
S5、将混合石墨粉、碳纤维、铜粉、二硫化钼、酚醛树脂按照重量份数比为25:15:5-8:3:35取出并均匀混合,然后将其和模具预热到120℃,再将上述混合的材料倒入模具中,保持120℃,时间12min;
S6、将S5中的模具放入模压机中,加热至220℃,通过70MPa的压力模压成型,压紧时间40min,获得砖坯,并放入焙烧炉中通过1000℃高温烧结20-30小时;
砖坯尺寸为30*30*200毫米,且其压缩率为65%;
S7、将S6处理后的砖坯进行加工,获得碳滑板。
实施例二
一种碳纤维增强受电弓碳滑板的制备工艺,包括如下步骤:
S1、原料,铜粉、鳞片状石墨粉、针状焦粉、碳纤维、酚醛树脂、改质煤沥青、二硫化钼;
所述鳞片状石墨粉、二硫化钼、碳纤维、针状焦粉平均粒度90-130目;
所述铜粉的平均粒度90-130目,密度为8.92×103/cm3;
所述改质煤沥青的软化点为90-100℃,结焦值为≥55%,灰分≤0.20%;
S2、鳞片状石墨粉、针状焦粉、改质煤沥青按照重量份数比为80:28:48的比例混合均匀,然后加热至140℃,倒入造粒机中进行造粒,要求粒径在70㎜;
S3、将S2制造的颗粒放入焙烧炉中,充入氮气作为保护气、按照以下升温方式升温至3000℃,并保持130小时,以进行石墨化;
室温-400℃,按照40℃/h升温,达到400℃后保持1h;
400-1000℃,按照30℃/h升温,达到1000℃后保持1h;
1000℃-1800℃,按照5℃/h升温,达到1800℃后保持3h;
1800℃-2600℃,按照按照10℃/h升温,达到2600℃后保持2h;
2600℃-3000℃,自由升温,达到3000℃后保持130h;
然后在焙烧炉中按照60℃/h的速度降温至室温后取出,获得石墨颗粒;
S4、将S3的石墨颗粒打碎至细度为95目的细粉,获得混合石墨粉;
S5、将混合石墨粉、碳纤维、铜粉、二硫化钼、酚醛树脂按照重量份数比为22:14:5-8:3.5:36取出并均匀混合,然后将其和模具预热到120℃,再将上述混合的材料倒入模具中,保持120℃,时间12min;
S6、将S5中的模具放入模压机中,加热至240℃,通过70MPa的压力模压成型,压紧时间40min,获得砖坯,并放入焙烧炉中通过1000℃高温烧结20-30小时;
砖坯尺寸为30*30*200毫米,且其压缩率为60%-70%;
S7、将S6处理后的砖坯进行加工,获得碳滑板。
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 (4)
1.一种碳纤维增强受电弓碳滑板的制备工艺,其特征在于,包括如下步骤:
S1、原料,铜粉、鳞片状石墨粉、针状焦粉、碳纤维、酚醛树脂、改质煤沥青、二硫化钼;
S2、鳞片状石墨粉、针状焦粉、改质煤沥青按照重量份数比为60-80:20-30:40-50的比例混合均匀,然后加热至100-140℃,倒入造粒机中进行造粒,要求粒径在50-80㎜之间;
S3、将S2制造的颗粒放入焙烧炉中,充入氮气作为保护气、升温至3000℃,并保持120-160小时,以进行石墨化;
S4、将S3的石墨颗粒打碎至细度为90-100目的细粉,获得混合石墨粉;
S5、将混合石墨粉、碳纤维、铜粉、二硫化钼、酚醛树脂按照重量份数比为20-26:10-15:5-8:3-4:30-38取出并均匀混合,然后将其和模具预热到100-120℃,再将上述混合的材料倒入模具中,保持100-120℃,时间10-12min;
S6、将S5中的模具放入模压机中,加热至200-250℃,通过60-80MPa的压力模压成型,压紧时间30-50min,获得砖坯;并放入焙烧炉中通过1000℃高温烧结20-30小时;
S7、将S6处理后的砖坯进行加工,获得碳滑板。
2.如权利要求1所述的制备工艺,其特征在于,S3中升温方式如下:
室温-400℃,按照40℃/h升温,达到400℃后保持1h;
400-1000℃,按照30℃/h升温,达到1000℃后保持1h;
1000℃-1800℃,按照5℃/h升温,达到1800℃后保持3h;
1800℃-2600℃,按照按照10℃/h升温,达到2600℃后保持2h;
2600℃-3000℃,自由升温,达到3000℃后保持120-160h;
然后在焙烧炉中按照60℃/h的速度降温至室温后取出,获得石墨颗粒。
3.如权利要求1所述的制备工艺,其特征在于,S6中砖坯尺寸为30*30*200毫米,且其压缩率为60%-70%。
4.如权利要求1所述的制备工艺,其特征在于,S1中所述鳞片状石墨粉、二硫化钼、碳纤维、针状焦粉平均粒度90-130目;
所述铜粉的平均粒度90-130目,密度为8.92×103/cm3;
所述改质煤沥青的软化点为90-100℃,结焦值为≥55%,灰分≤0.20%。
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