Imilinganiselo yombhobho wentsimbi

Imibhobho yentsimbizihlelwa ngokwemilo enqamlezileyo zibe setyhula, isikwere, uxande, kunye nemibhobho emilo eyodwa; ngezinto eziphathekayo kwimibhobho yentsimbi ye-carbon structural, imibhobho yentsimbi ene-alloy ephantsi, imibhobho yentsimbi yealloyi, kunye nemibhobho edibeneyo; nangokufaka izicelo kwimibhobho yokuhambisa imibhobho, izakhiwo zobunjineli, izixhobo ezishushu, amashishini epetrochemical, ukwenziwa koomatshini, ukugrumba komhlaba, kunye nezixhobo zoxinzelelo oluphezulu. Ngenkqubo yokuvelisa, zihlulwe zibe yimibhobho yentsimbi engenamthungo kunye nemibhobho yentsimbi edibeneyo. Imibhobho yentsimbi engenamthungo iphinda ihlelwe ngokweendidi eziqengqelekayo ezishushu nezibandayo (ezitsaliweyo), ngelixa imibhobho yentsimbi edityanisiweyo yahlulwe ngokwemibhobho edityanisiweyo ethe ngqo kunye nemibhobho edityanisiweyo ejiyileyo.

 

Kukho iindlela ezininzi zokubonisa iiparamitha ezinobungakanani bombhobho. Ngezantsi kukho iinkcazo zemilinganiselo yombhobho esetyenziswa ngokuqhelekileyo: NPS, DN, OD kunye neShedyuli.

(1) I-NPS (Ubungakanani boMbhobho oQelekileyo)

I-NPS ngumgangatho waseMntla waseMelika wemibhobho ephezulu / ephantsi kunye nephezulu / ephantsi yobushushu. Linani elingenamlinganiselo elisetyenziselwa ukubonisa ubungakanani bombhobho. Inombolo elandelayo ye-NPS ibonisa ubungakanani bombhobho osemgangathweni.

I-NPS isekelwe kwinkqubo yangaphambili ye-IPS (Ubungakanani boMbhobho weIron). Inkqubo ye-IPS yamiselwa ukwahlula ubukhulu bombhobho, kunye nemilinganiselo evezwe ngee-intshi ezimele uqikelelo lwedayamitha yangaphakathi. Umzekelo, umbhobho we-IPS 6" ubonisa i-diameter yangaphakathi esondele kwii-intshi ezi-6. Abasebenzisi baqala ukubhekisela kwimibhobho njenge-intshi ezi-2, i-intshi ezi-4, okanye i-intshi ezi-6.

 

2

I-DN ye-Nominal Diameter: Olunye umelo lwedayamitha yegama (bore). Isetyenziswa kwiinkqubo zemibhobho njengophawu oludityanisiweyo lwenobumba-inani, oluquka oonobumba i-DN elandelwa yi-dimensionless integer. Kufuneka kuqatshelwe ukuba i-DN ebizwa ngokuba yi-bore yinani elipheleleyo elingqukuva elilungeleneyo ngeenjongo zereferensi, ephethe kuphela unxulumano oluxekileyo kwimilinganiselo yokwenyani yokwenziwa kwemveliso. Inani elilandela i-DN ngokuqhelekileyo lilinganiswe ngeemilimitha (mm). Kwimigangatho yaseTshayina, i-diameter yepayipi idla ngokuchazwa njenge-DNXX, njenge-DN50.

Iidamitha zemibhobho zibandakanya i-diameter yangaphandle (OD), i-diameter yangaphakathi (ID), kunye ne-nominal diameter (DN/NPS). I-diameter ye-nominal (DN / NPS) ayihambelani neyona ndawo yangaphandle okanye yangaphakathi yombhobho. Ngexesha lokuvelisa kunye nofakelo, ububanzi bangaphandle obuhambelanayo kunye nobukhulu bodonga kufuneka bunqunywe ngokwemigangatho esemgangathweni yokubala ububanzi bangaphakathi bombhobho.

 

(3) Ububanzi obungaPhandle (OD)

I-Outer Diameter (OD): Isimboli sedayamitha yangaphandle ngu-Φ, kwaye inokuchazwa njenge-OD. Ehlabathini lonke, imibhobho yentsimbi esetyenziselwa ukuhambisa ulwelo idla ngokuhlelwa kuthotho olungaphandle lwedayamitha ezimbini: Uthotho A (iidayamitha ezinkulu zangaphandle, zobukhosi) kunye nochungechunge B (iidamitha zangaphandle ezincinci, i-metric).

Kukho uluhlu olubanzi lwemibhobho yentsimbi edayamitha yangaphandle ekhoyo kwihlabathi jikelele, njenge-ISO (UMbutho waMazwe ngaMazwe wokuMisela), i-JIS (eJapan), i-DIN (eJamani), kunye ne-BS (e-UK).

 

(4) IShedyuli yoButyebi boMbhobho

Ngo-Matshi 1927, iKomiti yeMigangatho yaseMelika yenza uphando lwemizi-mveliso kwaye yazisa ukunyuka okuncinci phakathi kwamabanga amabini obunzima bodonga lombhobho. Le nkqubo isebenzisa i-SCH ukubonisa ubukhulu bemibhobho.

 

 I-EHONG STEEL--imilinganiselo yombhobho wentsimbi