201 202 310S 304 316 Umbhobho wokuhombisa odityanisiweyo opholisiweyo opholisiweyo
Ukuhlelwa kwemibhobho enemisonto:
I-NPT, i-PT, kunye no-G yimisonto yonke yombhobho.I-NPT yintambo ye-taper ye-60 ° yomgangatho waseMelika kwaye isetyenziswa eMntla Melika.Imigangatho yesizwe inokufumaneka kwi-GB/T12716-2002m.
I-PT yi-55 ° itywinwe intambo yombhobho we-tapered, oluhlobo lwentambo ye-Wyeth kwaye isetyenziswa kakhulu kumazwe aseYurophu.Itheyiphu ngu-1:16.Imigangatho yesizwe inokufumaneka kwi-GB/T7306-2000.(Isetyenziswa kakhulu kubushushu obuphezulu, iinkqubo zoxinzelelo oluphezulu kunye neenkqubo zokuthambisa)
I-G yi-55 ° intambo yombhobho wokutywina ongeyena umsonto, oluhlobo lwentambo yeWyeth.Iphawulwe njengo-G imele umsonto oyicylindrical.Imigangatho yelizwe inokufumaneka kwi-GB/T7307-2001 (ininzi isetyenziselwa imibhobho yamanzi kunye negesi kunye noxinzelelo olungaphantsi kwe-1.57MPa).G ligama jikelele lomsonto wombhobho, owaziwa njengesangqa sombhobho.Oko kukuthi, intambo icutshungulwa yi-cylindrical surface.I-ZG ngokuqhelekileyo iyaziwa ngokuba yi-cone yepayipi, oko kukuthi, intambo icutshungulwa yi-conical surface, kwaye umgangatho wesizwe uphawulwe njenge-Rc (i-cone yangaphakathi yombhobho wentambo).Yomibini intambo ye-G kunye ne-Rp intambo yi-55 ° cylindrical pipe threads.I-Rp ligama lekhowudi ye-ISO.
Inxalenye ye-GB yomgangatho waseTshayina ilingana nomgangatho wamazwe ngamazwe we-ISO.Iinkcukacha zezi zilandelayo:
1. Ukulingana komsonto wangaphakathi wecylindrical (Rp) kunye nentambo yangaphandle edibeneyo (R1), ekubhekiselwa kuyo njenge "column/cone fit", inombolo yelizwe lam elisemgangathweni GB/T7306.1-2000, elamkela ngokulinganayo umgangatho wezizwe ngezizwe ISO7-1 : "Ikholamu / i-cone fit" ngo-1994 "intambo yombhobho etywinwe ngomsonto";
2. Ukulingana kwentambo yangaphakathi e-tapered (Rc) kunye ne-tapered yangaphandle (R2), ekubhekiselwa kuyo njenge "cone / cone fit", inombolo yelizwe lethu esemgangathweni yi-GB/T7306.2-2000, eyamkela ngokulinganayo umgangatho wamazwe ngamazwe we-ISO7- 1 :I "cone/cone fit" ngo-1999 "intambo yombhobho etywinwe ngomsonto";
3. I-fit of cylindrical internal thread (G) kunye ne-cylindrical external thread (G) kubhekiselwa kuyo njenge "column/column fit".Inombolo esemgangathweni yelizwe lethu yi-GB / T7307-2001 "55 ° intambo yombhobho engatywinwanga".Lo mgangatho ulingana Inxalenye yokuqala yomgangatho wamazwe ngamazwe ISO228-1: 1994 "Imicu yombhobho engatywinwanga" yi "Dimensional tolerances kunye nokumakisha", kodwa imigangatho yelizwe lam ayikukhuthazi ukusetyenziswa kwentambo yombhobho etywiniweyo kunye nemicu yepayipi engatywinwanga. , oko kukuthi (Rp /G);
1. Amanzi abandayo kunye neenkqubo zokuhambisa amanzi athatha uxhulumaniso olunentambo xa ububanzi bombhobho bungaphantsi okanye bulingana no-50mm.
2. Umatshini wokucoca umbhobho usetyenziselwa ukucutshungulwa kwentambo kunye neoli ekhethekileyo yomatshini wokucoca isetyenziselwa ukuthambisa.Amanzi okanye olunye ulwelo aluvumelekanga ukuba luthathe indawo ye-lubricant.
3. Ioyile yelothe kunye nocingo lwe-hemp zisetyenziselwa ukutywinwa kwemibhobho kunye nokupakisha, kwaye iteyiphu yeTeflon isetyenziselwa ukudityaniswa nezixhobo.Akuvumelekanga ukuzisa ukupakisha kumbhobho xa uqinisa intambo.
4. Ukusikwa kombhobho kufuneka kwenziwe nge-cutter okanye i-hacksaw.I-oxygen acetylene okanye umatshini wokusika awuvumelekanga.Ukuphambuka kokuthambekela kobuso bokuphela kokunqunyulwa akufanele kube ngaphezu kwe-1% yobubanzi obungaphandle bombhobho, kwaye akufanele kudlule i-3mm.
5. Ukuze kuqinisekiswe ukuba ubungakanani obuncinci bodonga lwengcambu yentambo, kufuneka igxininiswe kwisangqa sangaphakathi somphezulu wesiphelo secandelo lombhobho, kunye nokuphambuka kwentambo ye-axial kunye nokuthambeka kwe-axial yentambo yombhobho kufuneka ilawulwe ngokungqongqo, ngenxa yokuba. nokuba i-axial parallel deviation okanye i-axial tilt deviation, Zombini ziya kunciphisa kakhulu ubukhulu bodonga lombhobho, ngaloo ndlela kunciphisa amandla ombhobho.
Ukutenxa okuvumelekileyo kokusetyenzwa komsonto wombhobho
Idayamitha yegama (mm) Unxaxha olunxuseneyo (mm) Unxaxha lwethambeka (mm)
1 ≤32 0.3 0.3/100
2 40~65 0.4 0.4/100
3 80~100 0.5 0.5/100
4 125~150 0.6 0.5/100
6. Emva kokuba umbhobho odibeneyo uqhutywe, jonga ngesixhobo sokulinganisa intambo.Ukuba kukho izixhobo zombhobho zenkcazo efanayo, kungcono ukufanisa izixhobo zombhobho.Iqondo lokukhululeka lifuna ukukrujwa ngesandla, kwaye akufuneki likhululeke kakhulu ukuba izifakelo zombhobho zikrwelwe.Ukuba ayikakwazi ukujijwa ngaphakathi okanye isikrufu siqina, sinokurhoxiswa kuphela.Ukukrolwa ngenkani akuvumelekanga.
7. Umsonto ophothiweyo kufuneka ucoceke kwaye uqheleke.Umsonto ophukileyo okanye olahlekileyo akufanele udlule i-10% yenani elipheleleyo lemisonto.Umaleko wegalvanized kumphezulu wangaphandle wombhobho kufuneka ukhuselwe.Iindawo ezonakalisiweyo zendawo kufuneka ziphathwe ngonyango oluchasene ne-corrosion.
8. Uxhulumaniso olunentambo Ingcambu yomsonto wombhobho emva kokufakwa kombhobho kufuneka ibe ne-2 ~ 3 imisonto eveziweyo, kunye nocingo olugqithisiweyo lwe-hemp kufuneka lucocwe kwaye luphathwe ngonyango oluchasene ne-corrosion.
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