He rerekē ngā whānuitanga tono o ngā pūnaha paerewa rerekē, ā, he rerekē te arotahi ki te taumaha o ngā paipa.
I tēnei rā ka matapakihia e tātou te pūnaha paerewa EN o EN10220.
He tirohanga whānui mō te paerewa EN 10220
EN 10220ko te paerewa Pākehā mō ngā rahi me ngā manawanui o ngā paipa maitai tui kore me ngā paipa whakarewa.
He whānuitia ngā whakamahinga o te paerewa EN 10220, ā, e whakamahia nuitia ana i roto i ngā ahumahi hinu, hau, matū, hanga, me te maimoatanga wai.
Kei roto i te paerewa te whānui o waho (OD) me te matotoru o te pakitara (WT) o ngā paipa rino, e whakarato ana i tētahi huinga aratohu mārama me ngā whakaritenga ōrite mō te hoahoa me te hanga hangarau hei whakarite i te ōritetanga me te whakawhitiwhiti o ngā hua paipa i hangaia e ngā kaihanga rerekē.
Ngā Tikanga Tātai Taumaha
Kei roto i te EN 10220 te tikanga tatau i te papatipu mō ia mita mō ia waeine roa.
M=(DT)×Tx0.0246615
Mko te papatipu mō ia waeine roa i roto i te kg/m,
Dko te diameter o waho kua tohua i roto i te mm,
Tko te matotoru o te pakitara kua tohua i roto i te mm.
Ko tēnei tauwehenga e ahu mai ana i te mātotoru o te 7.85 kg/dm3.(kg/dm3(ko te waeine o te mātotoru, ngā tekemita pūtoru.)
Ka taea hoki te whakamahi i ngā uara kua tatauhia ki ngā ngongo me ngā uara mātotoru rerekē, engari me whakareatia mā te tauwehe o
1.015 mō te maitai kore waikura austenitic（Kei runga tēnei tauwehe i te mātotoru o te 7.97 kg/dm3）.
0.985 mō te maitai kore waikura ferritic me te martensitic（Kei runga tēnei tauwehe i te mātotoru o te 7.73 kg/dm3）.
Ka taea te mahi tātai i runga i ngā uara mātotoru kua rerekētia mō ia rōpū o ngā momo maitai kore waikura i whakaratohia i roto i te EN 10088-1.
Whakarōpūtanga Raupapa EN 10220
EN 10220e ai ki te taumata o te whakapūmautanga o ngā paipa me ā rātou taputapu. E toru ngā raupapa.
raupapa 1: ngā diameter o waho e whakapūmautia ana ngā taputapu katoa e hiahiatia ana mō te hanganga o ngā pūnaha paipa;
raupapa 2: ngā diameter o waho kāore i te paerewahia ngā taputapu katoa;
raupapa 3: he iti noa ngā diameter o waho e wātea ana mō ngā taputapu paerewa.
Ngā tūtohi taumaha paipa mō te EN 10220 Raupapa 1
Ko te OD o ngā paipa o tēnei raupapa e whai ana i ngā paerewa o te ao, o te ahumahi rānei, ā, e tuku ana te mākete i ngā hononga kua tino paerewatia pērā i ngā flanges, ngā hononga, me ngā tuke.
Mā tēnei whakaritenga katoa ka māmā ake te hoahoa me te tāutanga, ka whakaitihia hoki te hiahia mō ngā wāhanga kore-paerewa me ngā utu whakaritenga.
Ngā tūtohi taumaha paipa mō te EN 10220 Raupapa 2
Kua whakapūmautia te wāhanga OD o tēnei momo paipa, engari kāore i te whakapūmautia ngā hononga katoa. Ka taea te tiki i ētahi hononga paerewa, pērā i ngā flanges, i ngā tuke rānei, engari me whakarite pea ētahi atu wāhanga, ka nui ake te utu me te uaua o te kaupapa.
Ngā tūtohi taumaha paipa mō te EN 10220 Raupapa 3
He maha ngā wā ka puta tēnei āhuatanga mō ngā rahi paipa tino motuhake, kāore rānei i te tino ōrite, e hiahia ana ki te maha o ngā taputapu me ngā wāhanga kua whakaritea mō ia hiahia, ka piki ake te utu o te hoahoa me te whakatinana i te kaupapa, me te whakaroa ake hoki i te huringa hoko me te whakaputa.
Ngā Tūtohi Taumaha Paipa mō ngā Matotoru Pakitara 70 -100 mm
Mō ngā ngongo matotoru te pakitara, mai i te 70 mm ki te 100 mm te matotoru, kua tohua ngā whakaritenga ki te EN 10220, Ripanga 2.
Kāore pea e wātea ngā taputapu mō ngā ngongo pakitara taumaha me ngā rahi e rite ana ki te Ripanga 2 ahakoa te raupapa i te Ripanga 1 e tohaina ana te diameter waho e tika ana.
He kaihanga me te kaiwhakarato paipa maitai waro kounga teitei mātou nō Haina, ā, he kaihokohoko paipa maitai kore hononga hoki mātou, e tuku ana i te whānuitanga o ngā otinga paipa maitai ki a koe!
ngā tohu: en 10220, tūtohi taumaha paipa, Raupapa 1, kaiwhakarato, kaihanga, wheketere, kaihokohoko, kamupene, hoko rarahi, utu, whakatau tata, nuinga, hei hoko, utu.
Wā tuku: Maehe-04-2024