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潤(run)滑(hua)油(you)如(ru)何(he)選(xuan)擇(ze)
潤(run)滑(hua)油(you)的(di)主(zhu)要(yao)指(zhi)標(biao)是(shi)粘(nian)度(duo),常(chang)用(yong)的(di)質(zhi)量(liang)特(te)征(zheng)和(hu)評(ping)價(jia)指(zhi)標(biao)如(ru)下(xia):
| 質(zhi)量(liang)特(te)征(zheng) | 評(ping)價(jia)指(zhi)標(biao) |
| 流(liu)動(dong)性(xing) | 粘(nian)度(duo)、粘(nian)度(duo)指(zhi)數(shuo)、傾(qing)點(dian)(凝(ning)點(dian)) |
| 抗(kang)腐(fu)蝕(shi)性(xing) | 防(fang)鏽(xiu)性(xing)、銅(tong)片(pian)腐(fu)蝕(shi) |
| 壽(shou) 命(ming) | 抗(kang)氧(yang)化(hua)安(an)定(ding)性(xing) |
| 抗(kang)磨(mo)損(sun)性(xing) | 抗(kang)磨(mo)損(sun)性(xing)(齒(chi)輪(lun)試(shi)驗(yan)、泵(beng)送(song)試(shi)驗(yan)),極(ji)壓(ya)性(xing)(四(si)球(qiu)試(shi)驗(yan)、梯(ti)姆(mu)肯(ken)試(shi)驗(yan)),油(you)性(xing)(摩(mo)擦(ca)係(ji)數(shuo))、(鮑(bao)登(deng)試(shi)驗(yan))。 |
| 精(jing)製(zhi)程(cheng)度(duo)、添(tian)加(jia)劑(ji)熱(re)安(an)定(ding)性(xing) | 色(shai)度(duo)、中(zhong)和(hu)值(zhi)(酸(suan)值(zhi)、堿(jian)值(zhi))、殘(can)炭(tan)、灰(hui)分(fen)、微(wei)量(liang)元(yuan)素(su)含(han)量(liang)、熱(re)安(an)定(ding)性(xing)、閃(shan)點(dian) |
(1) 工(gong)作(zuo)負(fu)荷(he)
運(yun)動(dong)副(fu)的(di)工(gong)作(zuo)載(zai)荷(he)與(yu)所(suo)使(shi)用(yong)的(di)潤(run)滑(hua)油(you)的(di)流(liu)動(dong)性(xing)和(hu)抗(kang)磨(mo)損(sun)性(xing)有(you)直(zhi)接(jie)關(guan)係(ji)。運(yun)動(dong)副(fu)所(suo)受(shou)載(zai)荷(he)大(dai),所(suo)使(shi)用(yong)的(di)潤(run)滑(hua)油(you)粘(nian)度(duo)較(jiao)大(dai),油(you)性(xing)及(ji)極(ji)壓(ya)性(xing)等(deng)應(ying)良(liang)好(hao)。載(zai)荷(he)小(xiao),所(suo)使(shi)用(yong)的(di)潤(run)滑(hua)油(you)的(di)粘(nian)度(duo)較(jiao)小(xiao)些(xie),對(dui)油(you)性(xing)和(hu)極(ji)壓(ya)性(xing)的(di)要(yao)求(qiu)要(yao)低(di)些(xie)。
(2) 運(yun)動(dong)速(su)度(duo)
通(tong)常(chang)運(yun)動(dong)副(fu)的(di)速(su)度(duo)高(gao),則(ze)需(xu)使(shi)用(yong)較(jiao)低(di)粘(nian)度(duo)的(di)潤(run)滑(hua)油(you)以(yi)降(xiang)低(di)摩(mo)擦(ca)阻(zu)力(li),減(jian)少(shao)所(suo)消(xiao)耗(hao)的(di)功(gong)率(shuai)和(hu)發(fa)熱(re)。速(su)度(duo)低(di),可(ke)用(yong)較(jiao)高(gao)粘(nian)度(duo)的(di)油(you)。
(3) 工(gong)作(zuo)溫(wen)度(duo)
工(gong)作(zuo)溫(wen)度(duo)的(di)高(gao)低(di),影(ying)響(xiang)到(dao)所(suo)使(shi)用(yong)潤(run)滑(hua)油(you)的(di)粘(nian)度(duo)變(bian)化(hua)和(hu)氧(yang)化(hua)速(su)度(duo)。工(gong)作(zuo)溫(wen)度(duo)升(sheng)高(gao),潤(run)滑(hua)油(you)的(di)粘(nian)度(duo)變(bian)低(di),反(fan)之(zhi)粘(nian)升(sheng)高(gao),而(er)且(qie)在(zai)高(gao)溫(wen)下(xia)潤(run)滑(hua)油(you)的(di)氧(yang)化(hua)速(su)度(duo)加(jia)快(kuai)並(bing)變(bian)質(zhi),壽(shou)命(ming)縮(suo)短(duan)。因(yin)此(ci),處(chu)於(yu)高(gao)溫(wen)下(xia)的(di)潤(run)滑(hua)點(dian)應(ying)使(shi)用(yong)粘(nian)度(duo)大(dai)、粘(nian)度(duo)指(zhi)數(shuo)高(gao)、閃(shan)點(dian)高(gao)和(hu)抗(kang)氧(yang)化(hua)安(an)定(ding)性(xing)好(hao)的(di)潤(run)滑(hua)油(you)。一(yi)般(pan)潤(run)滑(hua)油(you)的(di)閃(shan)點(dian)應(ying)比(bi)最(zui)高(gao)溫(wen)度(duo)高(gao)20~30℃。礦(kuang)物(wu)潤(run)滑(hua)油(you)的(di)最(zui)高(gao)使(shi)用(yong)溫(wen)度(duo)為(wei)120~150℃,酯(zhi)類(lei)合(ge)成(cheng)油(you)的(di)最(zui)高(gao)使(shi)用(yong)溫(wen)度(duo)為(wei)200~250℃,矽(gui)油(you)為(wei)200~250℃。長(zhang)期(qi)在(zai)低(di)溫(wen)條(tiao)件(jian)下(xia)工(gong)作(zuo)特(te)別(bie)是(shi)冬(dong)季(ji)在(zai)高(gao)寒(han)地(de)區(ou)露(lou)天(tian)作(zuo)業(ye)的(di)設(she)備(bei)和(hu)車(ju)輛(liang),則(ze)因(yin)在(zai)低(di)溫(wen)下(xia)粘(nian)度(duo)過(guo)高(gao)泵(beng)送(song)性(xing)較(jiao)差(chai)而(er)難(nan)以(yi)起(qi)動(dong),因(yin)此(ci)應(ying)選(xuan)用(yong)低(di)溫(wen)潤(run)滑(hua)性(xing)能(neng)好(hao)的(di)潤(run)滑(hua)油(you)、脂(zhi),通(tong)常(chang)所(suo)使(shi)用(yong)潤(run)滑(hua)油(you)的(di)凝(ning)點(dian)(或(huo)傾(qing)點(dian))應(ying)低(di)於(yu)環(huan)境(jing)溫(wen)度(duo)8~10℃。有(you)些(xie)類(lei)型(xing)潤(run)滑(hua)油(you)還(huan)有(you)冬(dong)用(yong)油(you)、夏(xia)用(yong)油(you)和(hu)冬(dong)夏(xia)通(tong)用(yong)油(you)的(di)品(pin)種(zhong),可(ke)供(gong)不(bu)同(tong)季(ji)節(jie)下(xia)氣(qi)溫(wen)不(bu)同(tong)的(di)潤(run)滑(hua)點(dian)使(shi)用(yong)。
(4) 環(huan)境(jing)條(tiao)件(jian)
除(chu)了(liao)上(shang)述(shu)工(gong)作(zuo)溫(wen)度(duo)以(yi)外(wai),還(huan)應(ying)考(kao)慮(lv)運(yun)動(dong)副(fu)所(suo)處(chu)的(di)潮(chao)濕(shi)環(huan)境(jing)和(hu)介(jie)質(zhi)環(huan)境(jing)。對(dui)於(yu)處(chu)於(yu)潮(chao)濕(shi)環(huan)境(jing)如(ru)“梅(mei)雨(yu)"季(ji)節(jie),鹽(yan)霧(wu)、水(shui)蒸(zheng)氣(qi)、冷(leng)卻(que)液(ye)或(huo)乳(ru)化(hua)液(ye)等(deng)環(huan)境(jing)條(tiao)件(jian)下(xia)運(yun)行(hang)的(di)設(she)備(bei)潤(run)滑(hua)點(dian),一(yi)般(pan)潤(run)滑(hua)油(you)、脂(zhi)容(rong)易(yi)變(bian)質(zhi)、乳(ru)化(hua)或(huo)被(bei)水(shui)衝(chong)走(zou)而(er)流(liu)失(shi),這(zhe)時(shi)應(ying)選(xuan)用(yong)抗(kang)乳(ru)化(hua)性(xing)強(jiang)、防(fang)鏽(xiu)性(xing)和(hu)抗(kang)腐(fu)蝕(shi)性(xing)好(hao)和(hu)粘(nian)附(fu)性(xing)強(jiang)的(di)潤(run)滑(hua)油(you),同(tong)時(shi)應(ying)采(cai)取(qu)相(xiang)應(ying)的(di)密(mi)封(feng)措(cuo)施(shi),防(fang)止(zhi)水(shui)分(fen)和(hu)濕(shi)氣(qi)、鹽(yan)霧(wu)等(deng)的(di)侵(qin)入(ru)。介(jie)質(zhi)環(huan)境(jing)如(ru)化(hua)學(xue)環(huan)境(jing)、腐(fu)蝕(shi)性(xing)介(jie)質(zhi)(強(jiang)酸(suan)、堿(jian)、鹽(yan)等(deng))等(deng)易(yi)於(yu)造(zao)成(cheng)潤(run)滑(hua)油(you)、脂(zhi)的(di)腐(fu)蝕(shi)性(xing)加(jia)大(dai),應(ying)選(xuan)用(yong)化(hua)學(xue)穩(wen)定(ding)性(xing)好(hao)的(di)潤(run)滑(hua)油(you)。
此(ci)外(wai),在(zai)超(chao)真(zhen)空(kong)(1.33*10E-6Pa)條(tiao)件(jian)下(xia)工(gong)作(zuo)的(di)潤(run)滑(hua)油(you)品(pin),蒸(zheng)發(fa)度(duo)應(ying)較(jiao)低(di)。對(dui)於(yu)在(zai)輻(fu)射(she)條(tiao)件(jian)下(xia)工(gong)作(zuo)的(di)油(you)品(pin),應(ying)有(you)較(jiao)強(jiang)的(di)抗(kang)輻(fu)射(she)性(xing)。而(er)在(zai)高(gao)溫(wen)易(yi)燃(ran)條(tiao)件(jian)下(xia)工(gong)作(zuo)的(di)係(ji)統(tong)所(suo)使(shi)用(yong)的(di)介(jie)質(zhi)應(ying)選(xuan)用(yong)難(nan)燃(ran)介(jie)質(zhi)。
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