iindaba

Ukhetho Lokuthwala Olulula Nolusebenzayo: Uhlalutyo Olupheleleyo Lwezixhobo Zobunjineli BePlastiki Zekheji

 

Kwi-rolling yanamhlanjeibhereyithauyilo, ikheyiji yinxalenye ebalulekileyo, kwaye ukukhethwa kwezinto kuchaphazela ngokuthe ngqo ukusebenza kweebheringi, ubomi bokusebenza, kunye nokusetyenziswa okufanelekileyo. Xa kuthelekiswa nezixhobo zesinyithi zemveli, iikheyiji zeplastiki zobunjineli ziya zisiba nempumelelo kancinci kancinci kwiindawo ezahlukeneyo zoshishino ngenxa yeempawu zazo zomzimba nezekhemikhali ezizodwa.

 

Eli nqaku ligxile kwiiplastiki zobunjineli eziphambili ezifanai-nylon (PA), i-polyoxymethylene (POM), kunye ne-polyimide (PI), behlalutya ngokunzulu iingenelo zabo zokusebenza kunye nemida efanelekileyo kwizicelo zeekheyiji.

 

Uthelekiso lweMsebenzi weZixhobo eziPhambili

 

I-Nylon (PA)

 

Ngenxa yokuqina kwayo okugqwesileyo, ukuzithambisa, kunye neenzuzo zexabiso, i-nylon isetyenziswa kakhulu kwiibheringi ezisebenza phantsi kwemithwalo ephakathi kunye namaqondo obushushu aphakathi. I-coefficient yayo ephantsi yokungqubana inceda ukunciphisa ingxolo yokusebenza, okwenza ukuba ifaneleke ngakumbi kwizixhobo zasekhaya kunye nezixhobo zeofisi ezifuna amanqanaba aphezulu okuzola. Ngokwe-Rolling Bearing Application Handbook, i-PA66 inobushushu obuqhubekayo bokusebenza obufikelela kwi-120°C kwaye inokumelana namaqondo obushushu exesha elifutshane obufikelela kwi-150°C. Ixabiso layo le-PV (uxinzelelo × isantya) limalunga ne-50 MPa·m/s, nto leyo eyenza ukuba ifaneleke ukusebenza ngesantya esiphakathi.

 

I-Polyoxymethylene (i-POM)

 

I-POM yaziwa ngokuqina kwayo okuphezulu, ukutyibilika kwayo okuphantsi, kunye nokuzinza kwayo okugqwesileyo. Umphezulu wayo ogudileyo kunye nokumelana kwayo nokuguguleka okuphezulu kwi-nylon kuyenza ifaneleke kwiikheji zokuthwala kwizixhobo ezikhawulezayo, ezinomthwalo omncinci, okanye ezichanekileyo. I-POM inomlinganiselo wobushushu obusebenzayo ukusuka kwi--40°C ukuya kwi-100°C, kunye nokusebenza kwexesha elifutshane ukuya kuthi ga kwi-120°C. Ixabiso layo le-PV linokufikelela kwi-60 MPa·m/s, nto leyo eyenza ukuba ibe lukhetho olufanelekileyo kwiimoto ezikhawulezayo kunye neenkqubo zeewiper zeemoto.

 

I-Polyimide (PI)

 

Njengommeli weplastiki zobunjineli ezisebenza kakuhle, i-PI inika ukumelana okuhle kakhulu nobushushu obuphezulu (ukuya kuthi ga kwi-260°C ukuze isetyenziswe ixesha elide) ngelixa igcina amandla oomatshini kunye nokumelana nemisebe. Ixabiso layo le-PV lingadlula i-100 MPa·m/s, nto leyo eyenza ukuba ifaneleke kwiindawo ezishushu ezifana neenqwelo moya, iimoto zobushushu obuphezulu, kunye neenkqubo zokuthwala kwizixhobo ze-vacuum. Nangona ixabisa kakhulu, ayinakutshintshwa kwiimeko zokusebenza ezikhethekileyo.

 

Iingenelo eziBanzi zeeKheji zePlastiki zoBunjineli

 

Ubunzima obuphantsi: Ngobuninzi obuyi-1/7 kuphela kunentsimbi, iplastiki inciphisa kakhulu ubunzima beebheringi, inciphisa i-inertia, kwaye iphucula impendulo eguqukayo.

 

Ukusebenza Ngengxolo Ephantsi: Iiplastiki zinemodulus ethambileyo nethambileyo, ezifunxa ngempumelelo iintshukumo ukuze zisebenze ngokuthula.

 

Iimpawu zokuzithambisa: Uninzi lweeplastiki zobunjineli zithambisa ngaphakathi, nto leyo enciphisa ukuxhomekeka ekuthambiseni ngaphandle kwaye yandisa amaxesha okugcinwa.

 

Ukumelana Nokugqwala: Ziyakwazi ukumelana namanzi, ioyile, kunye neekhemikhali ezahlukeneyo, zilungele ukusetyenziswa kwiindawo ezifumileyo okanye ezirhabaxa.

 

Iingcebiso kunye neMigangatho yoKhetho

 

Ngokomgangatho we-JB/T 7048, ukukhethwa kweekheyiji zeplastiki kufuna ukuqwalaselwa ngokubanzi komthwalo, isantya, ubushushu, kunye neemeko zokusingqongileyo. I-POM ikhethwa kakhulu kwizicelo ezikhawulezayo nezingenangxolo iphantsi; i-PA lukhetho kwiimeko zokusebenza eziphakathi; kwaye i-PI icetyiswa kumaqondo obushushu aphezulu kakhulu okanye iimfuno zokuthembeka okuphezulu.

 

Iikheyiji zeplastiki zobunjineli azithatheli nje indawo yesinyithi; endaweni yoko, zilungiselelwe ukusebenza kwizicelo ezithile. Ngokukhetha izinto zesayensi, ukusebenza kakuhle, ukuzola, kunye nobomi kunokuphuculwa ngokupheleleyo ngelixa kugcinwa ukuthembeka kweebheringi. Ngokuhambela phambili kwitekhnoloji yezinto, imida yokusetyenziswa kweeplastiki ezisebenza kakuhle kwiibheringi iya kuqhubeka isanda.