Ngā ngongo ASTM A334 he ngongo maitai waro me te koranu i hangaia mō ngā tono pāmahana iti, ā, i hangaia mā te whakamahi i ngā tukanga maeneene me te whakarewa.
Kāore pea ētahi rahi hua e wātea ana i raro i tēnei whakatakotoranga nā te mea he pānga kino ngā matotoru pakitara taumaha ki ngā āhuatanga pānga pāmahana iti.
Whakarōpūtanga Tau
He maha ngā momo tohu o te ASTM A334 mō ngā taiao pāmahana iti rerekē.
Tau 1, Tau 3, Tau 6, Tau 7, Tau 8, Tau 9, me te Tau 11.
Ngā māka e rite ana mōKo ngā ngongo maitai koranu he Grade 3, Grade 7, Grade 8, Grade 9, me te Grade 11.
He rerekē ngā whakaritenga mō te hanganga matū me te āhuatanga ā-pūkaha o ia momo maitai, tae atu ki ngā paearu pāmahana iti rawa mō te whakamātautau pānga me tutuki.
Ngā Tukanga Hanga
Me hanga ngā ngongo e tekore honongaaunoa rāneitukanga whakarewame te kore e tāpirihia he konganuku whakakī ki te mahi whakarewa.
Te Maimoatanga Wera
Tau 1, 3, 6, 7, me te 9
Whakarerekētia mā te whakamahana ki te pāmahana ōrite kāore i raro iho i te 1550 °F [845 °C] ka whakamatao ki te hau, ki te rūma whakamatao rānei o te oumu e whakahaerehia ana e te hau.
Mena e hiahiatia ana te whakamātao, me whakawhitiwhiti kōrero.
Mō ngā momo ngongo maitai tuitui o runga ake nei anake:
Whakamahanahia anō, ā, whakahaerea te mahi wera me te pāmahana o te mahi whakaoti wera ki te awhe pāmahana whakaoti mai i te 845 - 955℃, kātahi ka whakamatao i roto i te oumu hau whakahaeretia mai i te pāmahana tīmatanga kāore i raro iho i te 845°C.
Tau 8
Kōwhiria tētahi o ngā tikanga e whai ake nei mō te maimoatanga wera.
Kua tineia, kua whakamahanatia;
Kua Whakapūmautia Takirua, kua Whakamāmāhia hoki.
Tau 11
Kei te whakaaetanga i waenganui i te kaihoko me te kaiwhakarato te whakawera i ngā ngongo Karaehe 11.
Ina whakawerahia ngā ngongo Tau 11, me whakarite kia rite te pāmahana ki te 1400 - 1600℉[760 - 870 °C].
Te Hanganga Matū ASTM A334
Mō ngā maitai Taumata 1, Taumata 6 rānei, kāore e whakaaetia kia whakaratohia he taumata whakakoi mō ngā huānga ehara i te mea e hiahiatia ana. Heoi anō, e whakaaetia ana kia tāpirihia ngā huānga e tika ana mō te tango waikura o te maitai.
Ngā Whakamātautau Mīhini ASTM A334
Kāore ngā whakaritenga āhuatanga ā-mīhini e pā ki ngā ngongo he iti iho i te 3.2 mm te whānui o waho, ā, he iti iho i te 0.4 mm te matotoru o te pakitara.
1. Āhuatanga Kume
Te roanga iti rawa i tatauhia mō ia whakaitinga 1/32 inihi [0.80 mm] o te matotoru o te pakitara:
Mō ngā ngongo he iti iho i te 1/2 inihi [12.7 mm] te whānui o waho, me whai mana ngā uara roa kua hoatu mō ngā tauira rīpene.
2. Ngā Whakamātautau Pānga
Tīpakohia te pāmahana e tika ana me te kaha o te pānga e rite ana i runga i te matotoru o te pakitara me te papa.
Te Kaha o te Pānga
Pāmahana Pānga
| Tau | Te Pāmahana Whakamātautau Pānga | |
| ℉ | ℃ | |
| Tau 1 | -50 | -45 |
| Tau 3 | -150 | -100 |
| Tau 6 | -50 | -45 |
| Tau 7 | -100 | -75 |
| Tau 8 | -320 | -195 |
| Tau 9 | -100 | -75 |
3. Whakamātautau Pakeke
| Tau | Rockwell | Brinell |
| Tau 1 | B 85 | 163 |
| Tau 3 | B 90 | 190 |
| Tau 6 | B 90 | 190 |
| Tau 7 | B 90 | 190 |
| Tau 8 | — | — |
| Tau 11 | B 90 | 190 |
4. Whakamātautau Whakapapatahi
Me whakahaere tētahi whakamātautau papatahi ki ngā tauira mai i ia pito o tētahi ngongo kua oti o ia rota, engari kaua ki te mea e whakamahia ana mō te whakamātautau mura, te whakamātautau flange rānei.
5. Whakamātautau Mura (Ngā Ngongo Kore-Tuitui)
Me whakahaere tētahi whakamātautau mura ki ngā tauira mai i ia pito o tētahi ngongo kua oti te hanga o ia rota, engari kaua ki te mea e whakamahia ana mō te whakamātautau whakatārewatanga.
6. Whakamātautau Flange (Ngā Ngongo Whakarewa)
Me whakahaere tētahi whakamātautau flange ki ngā tauira mai i ia pito o tētahi ngongo kua oti te whakarite o ia rota, engari kaua ki te mea e whakamahia ana mō te whakamātautau whakatārewatanga.
7. Whakamātautau Whakapapatahi Whakamuri
Mō ngā ngongo whakarewa, me whakahaere tētahi whakamātautau whakapararite whakamuri ki tētahi tauira mai i ia 460 mita o ngā ngongo kua oti.
Whakamātautau Hiko Waipū, Hiko Kore-Whakangaro rānei
Me whakamātautau hiko kore-whakangaro ia paipa, me whakamātautau wai-pūmau rānei, kia rite ki te Whakatakotoranga A1016/A1016M.
Ngā tono mō te Paipa Rino ASTM A334
E whakamahia ana hei kawe i ngā wai, i ngā hau rānei pērā i te hau maori, te hinu, me ētahi atu matū i ngā pāmahana iti.
1. Ngā pūnaha paipa cryogenice whakamahia whānuitia ana i roto i te hanganga o ngā pūnaha paipa mō te kawe i ngā wai whakapūkara (hei tauira, te hau māori wai, te hauota wai). Nā ōna āhuatanga whakapūkara pai rawa atu, ka taea e ia te pupuri i te kaha me te pakari ā-pūkaha i ngā pāmahana tino iti.
2. Ngā whakawhiti wera me ngā whakapūmauKa taea te whakamahi whai hua i ngā whakawhiti wera me ngā whakamātao hei whakamatao, hei whakamahana rānei i ngā pāpāho tukatuka, inā koa i roto i ngā ahumahi matū me te hinu-matū.
3. Ngā oko pēhanga: ka taea hoki te whakamahi hei hanga oko pēhanga i hangaia mō ngā mahi cryogenic. Ka taea te whakamahi i ēnei oko hei penapena i ngā matū cryogenic, mō ngā tukanga ahumahi motuhake rānei.
4. Ngā pūnaha me ngā taputapu whakamataoKa whakamahia ēnei ngongo mō te kawe i ngā pouaka whakamātao, inā koa ka hiahiatia ngā rauemi e ātete ana ki te pāmahana iti.
Paerewa ōrite ASTM A334
EN 10216-4: Ka kapi i ngā ngongo maitai kore-koranu me ngā ngongo maitai kua whakakoranuhia, he āhuatanga pāmahana-iti kua tohua.
JIS G 3460: e pā ana ki ngā ngongo maitai koranu mō te mahi cryogenic.
GB/T 18984: e pā ana ki ngā ngongo maitai kore hononga mō ngā oko pēhanga cryogenic. E whakamārama ana i ngā taipitopito o te hoahoa me te hanga o ngā ngongo maitai e tika ana mō ngā taiao pāmahana tino iti.
Ahakoa he rerekē pea ēnei paerewa i roto i ngā taipitopito me ngā whakaritenga motuhake, he rite tonu te whāinga whānui me te whakamahinga, arā, kia whakarite i te haumaru me te mahi a ngā paipa rino i roto i ngā taiao cryogenic.
Ā Mātou Hua e Pā Ana
Mai i tōna whakatūnga i te tau 2014, kua noho a Botop Steel hei kaiwhakarato matua o ngā paipa maitai waro i te raki o Haina, e mōhiotia ana mō te ratonga pai rawa atu, ngā hua kounga teitei, me ngā otinga whānui.
He maha ngā momo paipa rino waro me ngā hua e pā ana ki tēnei kamupene, tae atu ki ngā paipa rino kore-tuia, ERW, LSAW, me SSAW, me te whānuitanga katoa o ngā hononga paipa me ngā flanges. Kei roto hoki i āna hua motuhake ngā koranu kounga teitei me ngā rino kowiri tira austenitic, i hangaia kia tutuki ai ngā hiahia o ngā kaupapa paipa rerekē.
Ngā tohu: ASTM A334, paipa maitai waro, astm a334 gr 6, astm a334 gr 1.
Wā tuku: Mei-20-2024