综合图库亚洲色图_国产操逼黄色毛片_性生活视频免费_全裸美女中出网

服務熱線: 手(shou)機:

進口石墨棒加工廠家


進口石墨棒加工廠家

進口石墨棒

為什么要選(xuan)擇用(yong)進(jin)口石(shi)(shi)墨(mo)(mo)(mo)材(cai)料(liao)來(lai)加工成石(shi)(shi)墨(mo)(mo)(mo)棒,進(jin)口石(shi)(shi)墨(mo)(mo)(mo)棒的(de)(de)(de)(de)好(hao)處有哪(na)些?進(jin)口石(shi)(shi)墨(mo)(mo)(mo)棒材(cai)料(liao)相對國產石(shi)(shi)墨(mo)(mo)(mo)棒來(lai)講,其(qi)均勻性(xing)(xing)(xing)(xing),密度(du)高(gao),氣(qi)密性(xing)(xing)(xing)(xing)好(hao)等各種優(you)點(dian),普遍被客(ke)戶喜(xi)歡。進(jin)口石(shi)(shi)墨(mo)(mo)(mo)棒材(cai)是目前已(yi)知的(de)(de)(de)(de)較耐(nai)高(gao)溫(wen)的(de)(de)(de)(de)材(cai)料(liao)之一(yi)。它的(de)(de)(de)(de)熔(rong)點(dian)為3850℃±50℃,沸點(dian)達4250℃。它在(zai)7000℃超高(gao)溫(wen)電(dian)弧下10S,石(shi)(shi)墨(mo)(mo)(mo)的(de)(de)(de)(de)損失較小(xiao),按(an)重量(liang)計石(shi)(shi)墨(mo)(mo)(mo)損失0.8%。由此可見,石(shi)(shi)墨(mo)(mo)(mo)的(de)(de)(de)(de)耐(nai)高(gao)溫(wen)性(xing)(xing)(xing)(xing)能是很突出的(de)(de)(de)(de)。2、導(dao)(dao)(dao)熱(re)(re)性(xing)(xing)(xing)(xing)和導(dao)(dao)(dao)電(dian)性(xing)(xing)(xing)(xing):石(shi)(shi)墨(mo)(mo)(mo)棒材(cai)具(ju)有良(liang)好(hao)的(de)(de)(de)(de)導(dao)(dao)(dao)熱(re)(re)性(xing)(xing)(xing)(xing)和導(dao)(dao)(dao)電(dian)性(xing)(xing)(xing)(xing)。它與一(yi)般(ban)的(de)(de)(de)(de)材(cai)料(liao)相比(bi),其(qi)導(dao)(dao)(dao)熱(re)(re)導(dao)(dao)(dao)電(dian)性(xing)(xing)(xing)(xing)是相當高(gao)的(de)(de)(de)(de)。比(bi)不銹鋼高(gao)4倍(bei),比(bi)碳素鋼高(gao)2倍(bei),比(bi)一(yi)般(ban)的(de)(de)(de)(de)非金屬高(gao)100倍(bei)。3、特殊(shu)的(de)(de)(de)(de)抗熱(re)(re)震性(xing)(xing)(xing)(xing)能:石(shi)(shi)墨(mo)(mo)(mo)具(ju)良(liang)好(hao)的(de)(de)(de)(de)抗熱(re)(re)震性(xing)(xing)(xing)(xing)能,即當溫(wen)度(du)突然(ran)變化時,熱(re)(re)膨脹(zhang)系(xi)數小(xiao),因而(er)具(ju)有良(liang)好(hao)的(de)(de)(de)(de)熱(re)(re)穩(wen)定性(xing)(xing)(xing)(xing),在(zai)溫(wen)度(du)急(ji)冷急(ji)熱(re)(re)的(de)(de)(de)(de)變化時,不會產生裂紋。4、化學穩(wen)定性(xing)(xing)(xing)(xing):常(chang)溫(wen)下石(shi)(shi)墨(mo)(mo)(mo)具(ju)有良(liang)好(hao)的(de)(de)(de)(de)化學穩(wen)定性(xing)(xing)(xing)(xing),能耐(nai)酸、耐(nai)堿、耐(nai)有機溶劑的(de)(de)(de)(de)腐蝕。5、潤滑性(xing)(xing)(xing)(xing):石(shi)(shi)墨(mo)(mo)(mo)的(de)(de)(de)(de)潤滑性(xing)(xing)(xing)(xing)能類似于(yu)二硫化鉬,摩擦(ca)系(xi)數小(xiao)于(yu)0.1.其(qi)潤滑性(xing)(xing)(xing)(xing)能隨鱗片(pian)大小(xiao)而(er)變,鱗片(pian)愈(yu)大,摩擦(ca)系(xi)數愈(yu)小(xiao),潤滑性(xing)(xing)(xing)(xing)愈(yu)好(hao)。