1 必須重視儀器設備的管理和使用
儀yi器qi設she備bei的de高gao負fu荷he使shi用yong,往wang往wang容rong易yi發fa生sheng意yi外wai故gu障zhang,特te別bie是shi光guang學xue儀yi器qi若ruo因yin維wei護hu和he使shi用yong不bu當dang而er起qi霧wu,就jiu不bu能neng發fa揮hui儀yi器qi的de正zheng常chang作zuo用yong,而er帶dai來lai工gong作zuo上shang的de障zhang礙ai。所suo以yi高gao效xiao的de維wei護hu管guan理li儀yi器qi設she備bei已yi成cheng為wei當dang今jin企qi事shi業ye單dan位wei有you效xiao降jiang低di成cheng本ben,提ti高gao勞lao動dong生sheng產chan率lv的de有you效xiao手shou段duan。目mu前qian國guo內nei企qi業ye設she備bei維wei護hu管guan理li一yi般ban還hai停ting留liu在zai被bei動dong的de搶qiang修xiu作zuo業ye模mo式shi,即ji當dang儀yi器qi設she備bei發fa生sheng故gu障zhang,無wu法fa繼ji續xu使shi用yong時shi,維wei修xiu人ren員yuan才cai在zai最zui短duan時shi間jian內nei將jiang故gu障zhang排pai除chu,而er當dang沒mei有you發fa生sheng故gu障zhang時shi,維wei修xiu人ren員yuan隻zhi是shi空kong閑xian,所suo以yi這zhe樣yang的de管guan理li模mo式shi是shi談tan不bu上shang效xiao率lv的de,因yin此ci,儀yi器qi設she備bei的de管guan理li也ye應ying做zuo好hao計ji劃hua,同tong樣yang設she備bei維wei護hu管guan理li也ye需xu要yao把ba非fei計ji劃hua性xing的de工gong作zuo轉zhuan化hua為wei計ji劃hua性xing的de工gong作zuo。
如果我們定期的檢查保養來減低故障的發生,特別是做好儀器的"三防"工作,避免搶修工作,保證儀器隨時能投入正常的作用,這就是一種主動的方式。
2 注意測繪儀器的防霧
cehuiyiqizaishiyonghezhufangzhong,chuleyoushengmeixianxiangwai,wangwanghaiyouguangxuelingjiandeqiwu,yingxiangyiqidezhengchangshiyong,gukezhenduiguangxuexinqiqiwudezhuyaoyinsu,caiqufangzhicuoshi。
2.1 光學儀器起霧的原因及其危害
霧是指光學零件的拋光麵上,呈現出"露水"似的物質,這些物質有的是油質點子構成的,稱為油性霧,有的是由水珠或水與玻璃起化學反應形成堆積物構成的,稱為水性霧:有的光學零件上,兩種霧都有,叫做水油混合霧,一般的都以"露水"狀zhuang或huo幹gan的de堆dui積ji物wu存cun在zai於yu玻bo璃li表biao麵mian上shang。油you性xing霧wu通tong常chang分fen布bu在zai元yuan形xing光guang學xue零ling件jian的de邊bian緣yuan,並bing向xiang中zhong央yang伸shen延yan,有you的de則ze沿yan擦ca拭shi痕hen跡ji分fen布bu,油you性xing霧wu的de形xing成cheng主zhu要yao是shi油you脂zhi汙wu染ran了le玻bo璃li表biao麵mian,或huo是shi由you於yu油you脂zhi的de擴kuo散san,揮hui發fa在zai玻bo璃li表biao麵mian凝ning結jie而er造zao成cheng的de,比bi如ru擦ca拭shi光guang學xue零ling件jian所suo用yong的de輔fu料liao含han脂zhi量liang高gao,或huo者zhe所suo用yong的de工gong具ju帶dai有you油you脂zhi,用yong手shou指zhi直zhi接jie拿na取qu和he觸chu及ji光guang學xue零ling件jian等deng,都dou會hui引yin起qi油you性xing霧wu,或huo者zhe是shi光guang學xue儀yi器qi上shang所suo用yong油you脂zhi的de化hua學xue穩wen定ding性xing不bu好hao,產chan生sheng擴kuo散san或huo使shi用yong方fang法fa不bu當dang塗tu油you過guo多duo,油you脂zhi擴kuo散san到dao光guang學xue零ling件jian上shang而er引yin起qi油you性xing霧wu,或huo者zhe是shi由you於yu儀yi表biao油you脂zhi揮hui發fa性xing很hen大da,會hui產chan生sheng油you質zhi蒸zheng氣qi而er形xing成cheng油you性xing霧wu,還hai有you的de是shi用yong汽qi油you清qing洗xi金jin工gong零ling件jian時shi,沒mei有you讓rang汽qi油you充chong分fen發fa揮hui幹gan淨jing,就jiu塗tu油you裝zhuang配pei。還hai有you的de用yong汽qi油you稀xi釋shi放fang塵chen脂zhi塗tu在zai鏡jing身shen內nei,隨sui著zhe時shi間jian的de增zeng長chang和he溫wen度du的de變bian化hua,這zhe些xie汽qi油you及ji所suo含han的de其qi它ta成cheng份fen,逐zhu漸jian揮hui發fa至zhi光guang學xue零ling件jian上shang而er形xing成cheng油you性xing霧wu。
水性霧是由於潮濕空氣在溫度變化下而形成,主要分布在零件的全麵積上,產生原因主要是潮濕氣體所致,但與儀器密封性能、guangxuebolidehuaxuewendingxing,yijibolibiaomiandeqingjiechengduyouguan,zaijiaogaodexiangduishiduxia,meijunyishengchang,youxiemeijunshengchangzhuangdahou,bianzaijunsitizhouweichanshengfenmiwu,zhexiefenmiwuyoudeshiyezhuangde,zaiyezhuangfenmiwuwaiweibianxingchengshuixingwu。
不管何種原因形成的霧,由於霧滴以曲率半徑極小的球形分布於光學零件表麵上、使(shi)入(ru)射(she)光(guang)線(xian)產(chan)生(sheng)散(san)射(she)現(xian)象(xiang),除(chu)了(le)降(jiang)低(di)儀(yi)器(qi)的(de)有(you)效(xiao)透(tou)光(guang)率(lv)外(wai),並(bing)使(shi)成(cheng)象(xiang)質(zhi)量(liang)差(cha)影(ying)響(xiang)觀(guan)測(ce)。有(you)的(de)光(guang)學(xue)零(ling)件(jian)因(yin)長(chang)期(qi)起(qi)霧(wu),被(bei)腐(fu)蝕(shi)的(de)玻(bo)璃(li)表(biao)麵(mian)形(xing)成(cheng)很(hen)多(duo)微(wei)孔(kong),嚴(yan)重(zhong)的(de)會(hui)使(shi)玻(bo)璃(li)零(ling)件(jian)報(bao)廢(fei)。
guangxueyiqiqiwubujinzaiwoguodongnandiquyanzhongcunzai,jiushijiaoganzaodediqu,youyuwenchabianhua,yehuiqiwu,tabiguangxueyiqishengmeideyingxiangfanweigengda,erqiegengnanfangzhi。
2.2 使用防霧材料防止儀器生霧
光學儀器的防霧材料,要求具有良好的防霧效果,又要不影響玻璃的光學性能,使用如下的憎水膜材料,可以起到很好的防霧作用。
2.2.1 使用防霧劑
采(cai)用(yong)乙(yi)基(ji)含(han)氫(qing)二(er)氯(lv)矽(gui)烷(wan)處(chu)理(li)鍍(du)化(hua)學(xue)雙(shuang)透(tou)膜(mo)和(he)不(bu)鍍(du)膜(mo)的(de)光(guang)學(xue)玻(bo)璃(li)零(ling)件(jian),可(ke)以(yi)形(xing)成(cheng)較(jiao)牢(lao)固(gu)的(de)膜(mo)層(ceng),具(ju)有(you)憎(zeng)水(shui)性(xing)能(neng),有(you)較(jiao)好(hao)的(de)防(fang)水(shui)霧(wu)性(xing)能(neng),成(cheng)膜(mo)容(rong)易(yi),同(tong)時(shi)塗(tu)在(zai)光(guang)學(xue)零(ling)件(jian)表(biao)麵(mian),能(neng)改(gai)善(shan)玻(bo)璃(li)的(de)機(ji)械(xie)性(xing)能(neng),在(zai)一(yi)定(ding)程(cheng)度(du)上(shang)保(bao)護(hu)玻(bo)璃(li)表(biao)麵(mian)不(bu)易(yi)擦(ca)傷(shang),提(ti)高(gao)了(le)光(guang)學(xue)玻(bo)璃(li)表(biao)麵(mian)的(de)化(hua)學(xue)穩(wen)定(ding)性(xing),利(li)用(yong)它(ta)來(lai)清(qing)潔(jie)玻(bo)璃(li),去(qu)汙(wu)能(neng)力(li)較(jiao)強(qiang),很(hen)容(rong)易(yi)去(qu)掉(diao)手(shou)指(zhi)印(yin),口(kou)水(shui)圈(quan),提(ti)高(gao)了(le)工(gong)效(xiao),這(zhe)是(shi)一(yi)種(zhong)很(hen)好(hao)的(de)防(fang)霧(wu)劑(ji)。使(shi)用(yong)時(shi)用(yong)無(wu)水(shui)乙(yi)醚(mi)配(pei)成(cheng)乙(yi)基(ji)含(han)氫(qing)二(er)氯(lv)矽(gui)烷(wan)濃(nong)度(du)為(wei)0.25%-1%(重量%比)shiyong,zaishiwenxiahenkuaichengmobingguhua,caiyongqixiangfa,zhancafa,jinpaofa,qingxifajunke。shiyongfangbian,erqiebuxuyaozengjiashebei。danyaozhuyiyijihanqingerlvguiwanyouyudaiyoucijiqiwei,peizhishiwuchujipifuyuyifu,shiyongshiyiyongmianqiuhuohaimianzhanca,buyaochujijinshu,ruoyongyubudumohewukexiandeguangxuelingjian,qishiyongnongduketigaodao4%,youyuyijihanqingerlvguiwanyushuihuoxichaohoumaoyanqifushizuoyong,guyingmifengbaoguan,yanfangduiboliyujinshudefushi,peizhirongyeshiyaoxianpeixianyong。linsuanyanbolibuyicizhongfangfachuli。
還可采用防黴防霧劑,對硝基苯氧基乙基含氫氯矽烷,它為一種棕色液體,容易水解,將此藥品用乙醚配成5%左右濃度溶液,用離心、浸泡、擦拭方法均可成膜。
除此之外,采用乙基含氫矽油和十二烷基三甲氧基矽烷防霧劑都能有效地起到防霧作用。
2.2.2 用真空鍍膜方法,鍍聚全氟乙丙烯,這是一種惰性氟塑料,化學穩定性高,且具有耐熱、耐寒、耐(nai)腐(fu)蝕(shi)性(xing),與(yu)玻(bo)璃(li)和(he)金(jin)屬(shu)都(dou)有(you)較(jiao)強(qiang)的(de)結(jie)合(he)力(li),具(ju)有(you)較(jiao)好(hao)的(de)防(fang)黴(mei)防(fang)霧(wu)性(xing)能(neng)。不(bu)僅(jin)能(neng)在(zai)一(yi)般(ban)玻(bo)璃(li)表(biao)麵(mian)化(hua)學(xue)鍍(du)膜(mo),氟(fu)化(hua)膜(mo)層(ceng)形(xing)成(cheng)保(bao)護(hu)膜(mo),而(er)且(qie)可(ke)以(yi)在(zai)磷(lin)酸(suan)鹽(yan)玻(bo)璃(li)表(biao)麵(mian)成(cheng)膜(mo),磷(lin)酸(suan)鹽(yan)玻(bo)璃(li)化(hua)學(xue)穩(wen)定(ding)性(xing)很(hen)差(cha),很(hen)容(rong)易(yi)生(sheng)黴(mei)起(qi)霧(wu),而(er)且(qie)用(yong)一(yi)般(ban)的(de)化(hua)學(xue)鍍(du)膜(mo)方(fang)法(fa)塗(tu)鍍(du)矽(gui)烷(wan)、矽油、矽gui氟fu材cai料liao等deng,都dou不bu能neng形xing成cheng牢lao固gu的de保bao護hu膜mo,真zhen空kong鍍du膜mo方fang法fa,先xian在zai磷lin酸suan鹽yan玻bo璃li表biao麵mian鍍du氟fu化hua鎂mei,而er後hou再zai鍍du聚ju金jin氟fu乙yi丙bing烯xi,對dui磷lin酸suan鹽yan玻bo璃li有you良liang好hao的de防fang黴mei防fang霧wu效xiao果guo,多duo倍bei儀yi的de綠lv色se濾lv片pian,大da部bu分fen是shi磷lin酸suan鹽yan玻bo璃li,用yong這zhe種zhong方fang法fa處chu理li的de濾lv光guang片pian,防fang黴mei防fang霧wu效xiao果guo較jiao好hao。
2.2.3 采用非硫化矽橡膠密封膩子防霧
光學儀器密封性好,對於防黴防霧都有重要作用,非硫化矽橡膠密封膩,是一種非硫化醚矽橡膠,加入填充劑、著色劑、結構控製劑所組成,其密封膩高、低溫性能顯著優於原來的密封蠟,其他指標均不低於密封蠟。
2.3 設計使用中的防霧措施
2.3.1 設(she)計(ji)儀(yi)器(qi)時(shi)注(zhu)意(yi)防(fang)霧(wu),儀(yi)器(qi)結(jie)構(gou)應(ying)加(jia)強(qiang)密(mi)封(feng)性(xing)能(neng),保(bao)證(zheng)儀(yi)器(qi)在(zai)高(gao)溫(wen)或(huo)低(di)溫(wen)情(qing)況(kuang)下(xia)不(bu)降(jiang)低(di)密(mi)封(feng)性(xing)能(neng),以(yi)防(fang)止(zhi)因(yin)漏(lou)氣(qi)而(er)引(yin)起(qi)的(de)水(shui)性(xing)霧(wu),設(she)計(ji)人(ren)員(yuan)應(ying)當(dang)充(chong)分(fen)注(zhu)意(yi)選(xuan)擇(ze)化(hua)學(xue)穩(wen)定(ding)性(xing)能(neng)好(hao)的(de)光(guang)學(xue)玻(bo)璃(li)和(he)材(cai)料(liao),為(wei)防(fang)霧(wu)打(da)下(xia)良(liang)好(hao)的(de)基(ji)礎(chu)。
2.3.2 在zai製zhi造zao和he維wei修xiu過guo程cheng中zhong注zhu意yi整zheng潔jie生sheng產chan,裝zhuang配pei和he維wei修xiu的de工gong房fang須xu清qing潔jie,並bing嚴yan格ge遵zun守shou操cao作zuo規gui程cheng,精jing心xin擦ca拭shi光guang學xue零ling件jian,嚴yan禁jin用yong手shou直zhi接jie接jie觸chu和he拿na取qu光guang學xue零ling件jian,夾jia持chi光guang學xue零ling件jian的de工gong具ju須xu進jin行xing脫tuo脂zhi處chu理li,擦ca光guang學xue零ling件jian所suo用yong的de輔fu件jian,如ru棉mian光guang、布塊、乙醇、乙醚、碘以及與光學零件接觸的有機墊片均須進行嚴格脫脂,控製含脂量,裝光學零件的器皿和盛乙醇、乙醚的瓶子,須經常清洗,保持清潔,這些都是減少油性霧的重要途徑。
2.3.3 減jian少shao儀yi器qi內nei部bu的de水shui蒸zheng氣qi,防fang止zhi水shui蒸zheng氣qi在zai玻bo璃li表biao麵mian上shang凝ning結jie,盡jin可ke能neng在zai幹gan燥zao的de條tiao件jian下xia進jin行xing裝zhuang配pei或huo對dui裝zhuang配pei好hao的de儀yi器qi進jin行xing幹gan燥zao處chu理li,如ru充chong幹gan燥zao氮dan氣qi或huo空kong氣qi以yi及ji放fang置zhi幹gan燥zao劑ji。儀yi器qi在zai使shi用yong和he庫ku存cun中zhong,盡jin量liang控kong製zhi使shi用yong環huan境jing和he庫ku房fang的de相xiang對dui濕shi度du在zai6%左右,對於外業儀器在使用中不好控製濕度,用後應放在通風、向陽、幹燥的地方,在儀器箱內放入幹燥劑,並注意密封和及時更換烘幹矽膠幹燥劑,在潮濕環境下,使用的內業儀器,如糾正儀、複照儀等,對於可取下來的鏡頭和精密的光學部件,用後及時取下來故人幹燥缸內加以保護,並經常保持儀器清潔,減少結霧核心。
2.3.4 合理選擇和使用油脂,光學儀器上用的各種防塵脂、潤(run)油(you)油(you)脂(zhi)必(bi)須(xu)是(shi)揮(hui)發(fa)度(du)極(ji)低(di)和(he)化(hua)學(xue)穩(wen)定(ding)性(xing)好(hao)的(de)材(cai)料(liao),在(zai)光(guang)學(xue)儀(yi)器(qi)的(de)金(jin)屬(shu)零(ling)件(jian)上(shang)塗(tu)油(you)脂(zhi)時(shi),首(shou)先(xian)要(yao)把(ba)零(ling)件(jian)清(qing)洗(xi)幹(gan)淨(jing),讓(rang)汽(qi)油(you)揮(hui)發(fa)完(wan)後(hou)再(zai)塗(tu)油(you)脂(zhi),並(bing)且(qie)要(yao)塗(tu)均(jun)勻(yun)而(er)不(bu)能(neng)過(guo)多(duo),距(ju)光(guang)學(xue)件(jian)10-15mm的範圍內,禁止塗潤滑油脂和防塵脂,防止油脂擴散引起油性霧。
2.3.5 提ti高gao光guang學xue玻bo璃li表biao麵mian的de化hua學xue穩wen定ding性xing,利li用yong化hua學xue鍍du膜mo或huo真zhen空kong鍍du膜mo方fang法fa,在zai玻bo璃li表biao麵mian鍍du一yi層ceng憎zeng水shui膜mo,以yi提ti高gao玻bo璃li的de化hua學xue穩wen定ding性xing,增zeng強qiang玻bo璃li的de抗kang腐fu蝕shi能neng力li,減jian少shao起qi霧wu,為wei了le減jian輕qing水shui性xing霧wu對dui觀guan察cha的de影ying響xiang,也ye可ke采cai用yong親qin水shui材cai料liao,鍍du上shang一yi層ceng透tou明ming的de具ju有you一yi定ding的de物wu理li性xing能neng偽wei親qin水shui膜mo,使shi水shui霧wu能neng全quan部bu散san開kai,均jun勻yun的de分fen散san在zai膜mo層ceng中zhong,不bu影ying響xiang觀guan察cha,當dang大da氣qi幹gan燥zao時shi,膜mo層ceng中zhong的de水shui分fen自zi然ran地di揮hui發fa到dao大da氣qi中zhong。
2.3.6 除黴,除霧
光學儀器一旦生黴起霧,就造成了不良的影響,而且給修理工作帶來很多麻煩,因此,要以防為主,從儀器設計、zhizaokaishijiuzhuyigaohaofangmeifangwu,yiqikucunheshiyongzhongjiaqiangweihubaoyang,shizuohaofangmeifangwugongzuozhongyaobaozheng。erruguoyiqiyijingshengmeiqiwu,jiuyingjishichuli,yimianzaochenggengdasunshi。
如(ru)果(guo)霜(shuang)霧(wu)隻(zhi)在(zai)初(chu)期(qi)階(jie)段(duan),即(ji)在(zai)儀(yi)器(qi)生(sheng)黴(mei)起(qi)霧(wu)後(hou),很(hen)短(duan)的(de)時(shi)間(jian)內(nei),隻(zhi)在(zai)玻(bo)璃(li)表(biao)麵(mian)層(ceng)附(fu)蓋(gai)著(zhe)而(er)沒(mei)有(you)侵(qin)蝕(shi)玻(bo)璃(li)和(he)破(po)壞(huai)膜(mo)層(ceng)的(de)時(shi)候(hou),可(ke)以(yi)用(yong)混(hun)合(he)液(ye)擦(ca)掉(diao)。
yiqishengwuqiwuhouyingjishichuli,fouzeshijianchangle,jiuhuifushiguangxuelingjiandebiaomianhedumo,shenzhiyubolifushi,yingjishiyongyibandehunheyehuoyongyijihanqingerlvguiwanrongyecaxi,zhezhongrongyejifangwu,youyouyidingdechuwuchumeizuoyong。duobeiyidelvselvguangpiandabufenshilinsuanyanboli,henyiqiwu,erqiehennancajing,keyiyongxideanshuibinxi,erhouyongshuixijing,zaijishiyonghunheyebalvguangpianbiaomiancagan,danzhezhongbolihenbuwending,ruguobuyongshi,cajingfangzaiganzaominnei,huojishizuowuchuli,fouzehaihuishengmeiqiwu。duiguisuanyanbolijinliangbimianyongjianxingdewuzhiquca,yinweijianduiguisuanyanleiyoufushizuoyong。
如果當光學零件嚴重生黴起霧,並已腐蝕了玻璃,隻有重新更換玻璃或重新把光學零件拋光。
總之光學儀器要以防為主,發現黴霧要及時除掉,除黴霧後,要及時采取防霧防黴措施,才能保護儀器使之發揮更大的作用。
3 結語
由you於yu科ke學xue技ji術shu的de飛fei速su發fa展zhan,以yi及ji世shi界jie經jing濟ji發fa展zhan的de需xu要yao,新xin的de科ke學xue技ji術shu成cheng果guo不bu斷duan應ying用yong於yu儀yi器qi設she備bei,設she備bei的de現xian代dai化hua水shui平ping不bu斷duan提ti高gao,現xian代dai化hua設she備bei正zheng朝chao著zhe高gao速su化hua,精jing密mi化hua自zi動dong化hua等deng方fang向xiang發fa展zhan,故gu要yao積ji極ji引yin進jin國guo外wai現xian代dai儀yi器qi設she備bei管guan理li的de理li論lun和he方fang法fa,探tan索suo趕gan上shang國guo際ji先xian進jin水shui平ping的de途tu徑jing,使shi光guang學xue儀yi器qi設she備bei管guan理li進jin人ren一yi個ge健jian康kang的de現xian代dai管guan理li階jie段duan。
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