Standard mndandanda wa awiri ndi phula (GB/T193-2003)
Magawo ophatikizika amtundu wamtundu wamtundu ndi phula ayenera kutsatira zomwe zili mu Table 1. Patebulo, phula liyenera kusankhidwa mumzere womwewo monga diamete.
M'mimba mwa nthiti. Sankhani mzere woyamba wa madiameter choyamba, mndandanda wachiwiri wa diameter kachiwiri, ndiyeno dongosolo lapamwamba kwambiri lomaliza.
Pewani kusankha mawu okweza m'mabulaketi momwe mungathere.
Ulusi wokhazikika womwe uli ndi zolemba (a, b) patebulo uyenera kugwiritsidwa ntchito pokhapokha ngati wafotokozedwa.
Mndandanda wapadera wa diameter ndi phula:
Pamadiameter amtundu wokhazikika, ngati kamvekedwe kapadera kakang'ono kuposa kamene kamafotokozedwera mu Gulu 1, kuyenera kusankhidwa kuchokera pa izi:
3mm, 2mm, 1.5mm, 1mm, 0.75mm, 0.5mm, 0.35mm, 0.25mm, 0.2mm
Kusankha kamvekedwe kakang'ono kuposa kamene kafotokozedwera mu Gulu 1 kudzakulitsa zovuta kupanga ulusi
Mogwirizana ndi machulukidwe mu Gulu 2, kutalika kwapadera kwapadera kosankhidwa sikuyenera kukhala kopitilira muyeso womwe wafotokozedwa mu Gulu 2.
7.3 Kulekerera kwapamwamba kwambiri
a) Kulekerera kwakukulu kwa ulusi wakunja:
Kulekerera kwa Giredi 6: Ta (6)-180P3-3.15
Kulekerera kwa mlingo 4: Ta (4) =0.63Ta (6)
Kulekerera kwa Giredi 8: Ta (8) =1.6Ta (6)
Ta amayezedwa ndi ma microns ndipo P amayezedwa mu millimeters.
b) Kulekerera pang'ono kwa ulusi wamkati:
Kulekerera kwa kalasi 6: 1) Pamene 0.2mm1mm:1 (6) =230P0.7
Kulekerera kwa mlingo 4: Tpi (4)=0.63 Tp (6)
:Kulekerera kwa Grade 5: Toi (5) =0.8 Tbi (6); Kulekerera kwa Grade 7: Tpi (7) =1.25 Tbi (6); Kulekerera kwa Grade 8: Ku (8) = 1.6Tp1 (6To imayesedwa mu microns ndi P mu millimeters.
Kupatuka kwa malire (GB/T2516-2003)
Miyezo yopatuka ya ulusi wapakati ndi m'mimba mwake ya pamwamba ikuwonetsedwa mu Gulu 1 (yosiyidwa).
Mfundo iliyonse pansi mbiri ya ulusi mkati ndi kunja sayenera kupitirira pazipita olimba mbiri anatsimikiza ndi mfundo zofunika ndi kulolerana zone udindo.Kupatuka kwa m'mimba mwake ya tebulo wapatsidwa molingana ndi H / 6 kudula kutalika, amene angagwiritsidwe ntchito kuwerengera kupsinjika kwa ulusi wakunja.
Zindikirani: Kupatuka kwa mainchesi ochepa a ulusi wakunja kumawerengedwa ngati -(les + H/6).Pokhapokha ngati tafotokozera mwanjira ina, malo olekerera amakhudza ulusi musanawuke.Pambuyo plating, palibe mfundo pa mbiri ulusi ayenera kupitirira pazipita olimba dzino mbiri yotsimikiziridwa ndi kulolerana malo H kapena h. Dziwani: kulolerana magulu amagwira ntchito pa ulusi wokutira woonda.Mwachitsanzo, ulusi wa electroplating.
Nthawi yotumiza: Sep-19-2023