JIS G 3455he Paerewa Ahumahi Hapanihi (JIS) mō te ratonga pēhanga teitei i ngā pāmahana 350 °C, iti iho rānei, ko te nuinga mō ngā wāhanga mīhini.
Paipa maitai STS370He paipa rino tēnei, ko te kaha kume iti rawa he 370 MPa, ā, ko te kaha whakaputa iti rawa he 215 MPa, kāore e neke atu i te 0.25% te ihirangi waro, ā, kei waenga i te 0.10% me te 0.35% te ihirangi silicon, ā, e whakamahia ana i ngā mahi e hiahia ana kia kaha te hanga me te pai o te whakarewa, pērā i ngā hanganga whare, ngā piriti, ngā oko pēhanga, me ngā wāhanga kaipuke.
E toru ngā momo o te JIS G 3455.STS370, STS410, STA480.
Te whānui o waho o te 10.5-660.4mm (6-650A) (1/8-26B).
Me hanga ngā paipa mai i tete maitai kua mate.
Ko te maitai kua mate he maitai kua tangohia katoatia te waikura i mua i te whakarewanga ki roto i ngā poro, i ētahi atu āhua rānei. Ko te tukanga he tāpiri i tētahi matū tango waikura pērā i te silicon, te konumohe, te manganese rānei ki te maitai i mua i tōna whakapakeketanga. Ko te kupu "kua mate" e tohu ana kāore he tauhohenga hāora e puta ana i roto i te maitai i te wā o te tukanga whakapakeketanga.
Mā te whakakore i te hāora, ka ārai te maitai kua mate i te hanganga o ngā mirumiru hau i roto i te maitai rewa, ā, ka ārai i te porosity me ngā mirumiru hau i roto i te hua whakamutunga. Ko te hua o tēnei he maitai ōrite, he mātotoru ake, he pai ake ngā āhuatanga ā-pūkaha me te hanganga pakari.
He tino pai te maitai patu mō ngā tono e hiahia ana kia kounga teitei me te pakari, pērā i ngā oko pēhanga, ngā hanganga nunui, me ngā paipa he whakaritenga kounga teitei.
Mā te whakamahi i te maitai kua patua hei hanga ngongo, ka taea e koe te tino mohio ka pai ake te mahi me te roa o te ora ratonga, ina koa i roto i ngā taiao e pāngia ana e ngā kawenga me ngā pēhanga taimaha.
I hangaia mā te whakamahi i tētahi tukanga hanga maeneene me te tikanga whakaoti.
Paipa maitai kore-whakaoti wera: SH;
Paipa maitai tui-makariri: SC.
Mō te tukanga hanga hononga-kore, ka taea te wehewehe whānui ki ngā paipa rino hononga-kore me te diameter o waho neke atu i te 30mm mā te whakamahi i te whakaputanga wera, me te 30mm mā te whakamahi i te whakaputanga matao.
Anei te rere o te whakaputanga o te hononga wera-oti.
Ko te whakamahana pāmahana iti te nuinga o te wā e whakamahia ana hei whakapai ake i te mahi a ngā rauemi, hei whakaiti i te pakeketanga, hei whakapai ake i te pakari, ā, he pai hoki mō te maitai matao-mahi.
Ka whakamahia te whakataurite hei whakapai ake i te kaha me te pakari o te rauemi, kia pai ake ai te maitai ki te tu atu i te ahotea miihini me te ngenge, e whakamahia ana hei whakapai ake i te mahi a te maitai matao.
Mā roto i ēnei tukanga maimoatanga wera, ka arotauhia te hanganga o roto o te maitai, ka whakapaitia hoki ōna āhuatanga, kia pai ake ai mō te whakamahi i roto i ngā tono ahumahi uaua.
Me rite te tātari wera ki te JIS G 0320. Me rite te tātari hua ki te JIS G 0321.
| māka | C (Waro) | Si (Hikona) | Mn (Mangane) | P (Pūhāota) | S (Whānariki) |
| STS370 | 0.25% te mōrahi | 0.10-0.35% | 0.30-1.10% | 0.35% te mōrahi | 0.35% te mōrahi |
Tātaritanga werako te whāinga matua he whakamātautau i te hanganga matū o ngā rauemi mata.
Mā te tātari i te hanganga matū o ngā rauemi mata, ka taea te matapae me te whakarerekē i ngā mahi tukatuka me ngā āhuatanga e hiahiatia ana i roto i te tukanga whakaputa, pērā i ngā tawhā maimoatanga wera me te tāpiri i ngā huānga whakarewa.
Tātaritanga huatātari i te hanganga matū o ngā hua kua oti hei manatoko i te tutuki me te kounga o te hua whakamutunga.
Mā te tātari hua ka whakarite kia whakahaeretia ngā huringa katoa, ngā tāpiritanga, ngā poke rānei o te hua i te wā o te tukanga hanga, ā, kia tutuki hoki i te hua whakamutunga ngā whakaritenga hangarau me ngā whakaritenga tono.
Me tutuki ngā uara o te tātari hua i raro i te JIS G 3455 i ngā whakaritenga o ngā huānga o te ripanga i runga ake nei, engari me tutuki hoki te awhe manawanui i ngā whakaritenga o te JIS G 3021 Ripanga 3.
Ngā uara roa mō te Wāhanga Whakamātautau Nama 12 (e whakarara ana ki te tuaka paipa) me te Wāhanga Whakamātautau Nama 5 (e poutū ana ki te tuaka paipa) i tangohia mai i ngā paipa kei raro iho i te 8 mm te matotoru o te pakitara.
| Tohu o te māka | Te taputapu whakamātautau i whakamahia | Te whakaroa iti rawa, % | ||||||
| Te matotoru o te pakitara | ||||||||
| ＞1 ≤2 mm | ＞2 ≤3 mm | ＞3 ≤4 mm | ＞4 ≤5 mm | ＞5 ≤6 mm | ＞6 ≤7 mm | ＞7 ＜8 mm | ||
| STS370 | Nama 12 | 21 | 22 | 24 | 26 | 27 | 28 | 30 |
| Nama 5 | 16 | 18 | 19 | 20 | 22 | 24 | 25 | |
| Ka whiwhihia ngā uara whakaroa o tēnei ripanga mā te tango i te 1.5% mai i te uara whakaroa i homai i te Ripanga 4 mō ia whakahekenga 1 mm o te matotoru o te pakitara mai i te 8 mm, ā, mā te whakaawhiwhi i te hua ki te tauoti e ai ki te Ture A o JIS Z 8401. | ||||||||
Kāore e whakaaetia te whakamātautau whakatārewatanga mēnā kāore i te tohua tētahi atu mea e te kaihoko.
Whakatakotoria te tauira ki roto i te mīhini ka whakahāngai kia tae rā anō te tawhiti i waenganui i ngā papa e rua ki te uara kua tohua ko H. Kātahi ka tirohia te tauira mēnā he pakaru.
I te whakamātautau i te paipa whakarewa ātete nui, ko te rārangi i waenga i te whakarewa me te pokapū o te paipa he poutū ki te ahunga pēhanga.
H=(1+e)t/(e+t/D)
H: te tawhiti i waenga i ngā pereti (mm)
t: te matotoru o te pakitara o te ngongo (mm)
D: te diameter o waho o te ngongo (mm)
e:pūmau kua tautuhia mō ia taumata o te ngongo.0.08 mō STS370: 0.07 mō STS410 me STS480.
He pai mō ngā paipa he ≤ 50 mm te whānui o waho.
Me kore he pakaru o te tauira ina pikohia ki te 90°, me te whānui o roto e 6 ngā wā o te whānui o waho o te paipa.
Me ine te koki piko i te tīmatanga o te piko.
Me whakamātautau ia paipa rino mā te whakamahi i te wai, mā te kore rānei e whakangaro.hei whakarite i te kounga me te haumaru o te paipa, kia tutuki ai hoki ngā paerewa whakamahinga.
Whakamātautau Waipēhi
Mena kāore he pēhanga whakamātautau i tohua, me whakatau te pēhanga whakamātautau wai iti rawa i runga anō i te Kaupapa Paipa.
| Te matotoru o te pakitara ingoa | 40 | 60 | 80 | 100 | 120 | 140 | 160 |
| Te pēhanga whakamātautau waipēhi iti rawa, Mpa | 6.0 | 9.0 | 12 | 15 | 18 | 20 | 20 |
Mena kāore te matotoru o te pakitara o te diameter o waho o te paipa maitai i roto i te uara paerewa i roto i te ripanga taumaha o te paipa maitai, me whakamahi te tātai hei tatau i te uara pēhanga.
P=2st/D
P: pēhanga whakamātautau (MPa)
t: te matotoru o te pakitara o te paipa (mm)
D: te whānui o waho o te paipa (mm)
s: 60 % o te uara iti rawa o te pūwāhi tuku, te ahotea whakamātautau rānei i hoatu.
Ina nui ake te pēhanga whakamātautau waipū iti rawa o te tau mahere kua tīpakohia i te pēhanga whakamātautau P i whiwhihia e te tātai, me whakamahi te pēhanga P hei pēhanga whakamātautau waipū iti rawa hei utu mō te tīpako i te pēhanga whakamātautau waipū iti rawa i te ripanga i runga ake nei.
Whakamātautau Kore-Whakangaro
Me whakahaere te whakamātautau kore-whakangaro o ngā ngongo maitai ewhakamātautau iahiko ultrasonic, iahiko eddy rānei.
Mōultrasonicngā āhuatanga tirotiro, te tohu mai i tētahi tauira tohutoro kei roto he paerewa tohutoro o te akomanga UD e ai ki te tohu i roto iJIS G 0582me kiia he taumata whakaoho, ā, me rite, me nui ake rānei te tohu taketake i te taumata whakaoho.
Ko te arotautanga paerewa mō te kitengaiahiko hurihurime whai i te kāwai EU, EV, EW, EX rānei te whakamātautau kua tohua i roto iJIS G 0583, ā, kaua he tohu e rite ana, e nui ake rānei i ngā tohu mai i te tauira tohutoro kei roto te paerewa tohutoro o te kāwai kua whakahuatia.
Mō ētahi atuNgā Tūtohi Taumaha Paipa me ngā Rārangi Paipai roto i te paerewa, ka taea e koe te pāwhiri.
He tino pai te paipa Whakaritenga 40 mō ngā tono pēhanga iti ki te pēhanga waenga nā te mea he matotoru pakitara taurite e karo ana i te taumaha nui me te utu nui, me te whakarite hoki i te kaha e tika ana.
E whakamahia whānuitia ana ngā paipa Whakaritenga 80 i roto i ngā taiao ahumahi e hiahia ana ki te whakahaere pēhanga teitei, pērā i ngā pūnaha tukatuka matū me ngā paipa tuku hinu me te hau, nā te mea he kaha ki te tu atu i ngā pēhanga teitei ake me ngā pānga miihini kaha ake nā te matotoru o tōna pakitara, e whakarato ana i te haumaru, te tūpato, me te roa.
Me tāpiri ngā kōrero e whai ake nei ki ia ngongo me ngā tapanga.
a)Tohu o te māka;
b)Tohu o te tikanga hanga;
c)Ngā AhuTauira 50AxSch80, 60.5x5.5 rānei;
d)Ingoa o te kaihanga, waitohu rānei e tohu ana.
Mēnā he iti te whānui o waho o ia ngongo, ā, he uaua ki te tohu i ia ngongo, mēnā rānei e hiahia ana te kaihoko kia tohua ia paihere ngongo, ka taea te tohu i ia paihere mā te tikanga e tika ana.
He pai te STS370 mō ngā pūnaha whakawhiti wai pēhanga iti engari pāmahana teitei.
Ngā pūnaha whakamahanaI roto i ngā pūnaha whakamahana o te tāone, o ngā pūnaha whakamahana whare nui rānei, ka taea te whakamahi i te STS370 hei kawe i te wai wera, i te mamaoa rānei, nā te mea ka taea e ia te tu atu i ngā panonitanga pēhanga me te pāmahana i roto i te pūnaha.
Ngā tipu hikoI roto i te whakaputa hiko, e hiahiatia ana he maha o ngā paipa mamaoa pēhanga teitei, ā, ko te STS370 te rauemi tino pai mō te hanga i ēnei paipa nā te mea ka taea e ia te tu atu i ngā taiao mahi pēhanga teitei me te pāmahana teitei mō ngā wā roa.
Ngā pūnaha hau kōpekeI roto i ngā raina hanga me ngā raina whakaputa aunoa, he puna hiko nui te hau kōpeke, ā, e whakamahia ana te paipa maitai STS370 hei hanga paipa mō ēnei pūnaha hei whakarite i te tuku hau haumaru me te whai hua.
Te whakamahinga hanganga me ngā mīhini whānuiNā ōna āhuatanga hangarau pai, ka taea hoki te whakamahi i te STS370 i roto i te hanga i ngā momo wāhanga hanganga me ngā wāhanga hangarau, inā koa i roto i ngā tono e hiahiatia ana he kaha pēhi.
He rauemi maitai waro te JIS G 3455 STS370 e whakamahia ana i roto i te ratonga pēhanga teitei. Ka taea te kī he rite, he tata rite rānei ngā rauemi e whai ake nei:
1. ASTM A53 Tau BHe pai mō ngā mahi hanganga whānui me ngā mahi miihini, me te kawe wai hoki.
2. API 5L Tau BMō ngā paipa kawe hinu me te hau pēhanga teitei.
3. DIN 1629 St37.0Mō te hangarau whānui me te hanganga waka.
4. EN 10216-1 P235TR1He paipa maitai tui kore mō ngā taiao pāmahana teitei me te pēhanga teitei.
5. ASTM A106 Tau BHe paipa maitai waro maeneene mō te mahi pāmahana teitei.
6.ASTM A179Ngā ngongo me ngā paipa maitai ngawari, he mea kumea mātao, he maeneene hoki, mō te mahi pāmahana iti.
7. DIN 17175 St35.8He rauemi ngongo tui kore mō ngā poiha me ngā oko pēhanga.
8. EN 10216-2 P235GHNgā ngongo me ngā paipa tui kore, he mea hanga ki te maitai kore-koranu me te maitai koranu mō ngā taiao pāmahana teitei me te pēhanga teitei.
Mai i tōna whakatūnga i te tau 2014, kua noho a Botop Steel hei kaiwhakarato matua o ngā paipa maitai waro i te Tai Tokerau o Haina, e mōhiotia ana mō te ratonga pai rawa atu, ngā hua kounga teitei, me ngā otinga whānui. He maha ngā momo paipa maitai waro me ngā hua e pā ana ki tēnei kamupene, tae atu ki ngā paipa maitai kore hononga, ERW, LSAW, me SSAW, me te whānuitanga katoa o ngā hononga paipa me ngā flanges.
Kei roto hoki i ana hua motuhake ngā koranu kounga teitei me ngā maitai kore waikura austenitic, i hangaia kia tutuki ai ngā hiahia o ngā kaupapa paipa rerekē.
