I ngā mahi o ia rā o te mira maitai, o te papa hanga rānei, he nui atu te whakamātautau pakeke i te tirotiro noa iho—koinei te huarahi tere ki te manatoko mēnā he pai te paipa mō tōna whakamahinga. Ahakoa kei te tirotirohia e koeLSAW mō tētahi raina pēhanga teitei,ngā wāhanga tuwheraMō te anga o te papa tākaro, mā te uara pakeke koe e whakaatu tika te āhua i rongoatia ai te maitai, me tōna whanonga i raro i te taumahatanga.
Anei te āhua hangarau o tā mātou ine i tēnei mea, me tōna hiranga ki tō hua.
Pikitia 1.Te whakamātautau pakeke o ngā paipa maitai waro i roto i tā mātou taiwhanga.
He aha e kore ai e taea e tātou te wareware i te pakeketanga
Ehara i te mea ko te ātete mata anake te mea nui o te pakeke; he "ara poto" kore-whakangaro hei mārama ki te wairua miihini o te paipa.
Te Aromatawai Kaha:He hononga tika, rārangi kei waenganui i te pakeketanga me te kaha kume (Rm). I te mara, he maha ā mātou whakamahinga i te ture matua Rm≈ 3.45× HB hei whakatau tata i te kaha, me te kore e hiahiatia he whakamātautau kume katoa.
Te Hopu i ngā Hapa Maimoatanga Wera:Mena i whakaarohia kia whakatauritea tētahi puranga o te ASTM A106 engari i tino kaha rawa te putanga mai, e whakaatu ana ngā whakamātautau he hē te tere whakamatao, he kore ōrite rānei te pāmahana o te oumu.
Te "Hononga Ngoikore" (Ngā Whakarewa):I roto i ngā paipa whakarewa pērā i te ERW, te SSAW rānei, ko te Rohe Pānga Wera (HAZ) te rohe mōrearea. Mēnā ka tino mārō rawa tēnei wāhi, ka pakarukaru. I roto i te "ratonga kawa" hinu me te hau, he aukume te whakarewa tino mārō mō te Pakaru i Āraia e te Hauwai (HIC).
Ngā Tikanga Matua e Toru: Ko tēhea Tikanga me Whakamahi e Koe?
1. Brinell (HBW) – Pai rawa atu mō ngā Rauemi Papatipu
Mō ngā pereti maitai mata me ngā paipa matotoru-pakipa, ko Brinell te paerewa koura. He pōro tungsten carbide 10mm te matotoru e whakamahia ana, ā, he taumaha te kawenga (tae atu ki te 3000kg).
He aha i mahi ai:Ka whakatauritea te kōhao nui ki te hanganga o te maitai, ka hoatu he pānui "papatipu" e tohu ana i te rahinga, kaua ki tētahi rerekētanga ā-rohe.
Te Tātai:
2. Rockwell (HRB/HRC) – Te Kīngi Whakaputa
Mena kei te hiahia koe ki ngā hua i roto i ngā hēkona i runga i tētahi raina reo nui, ko Rockwell te otinga. He tikanga pānui tika tēnei kāore e hiahiatia he ine whatu.
HRB:He pai mō ngā maitai ngawari pēnei i te Q235.
HRC:He mea tika mō ngā maitai paipa kaha-teitei (pēnei i te API 5L X70) me ngā wāhanga kua tineia.
3. Vickers (HV) – Te Kaihanga Tika Taiwhanga
Ka whakamahia e Vickers tētahi piramiti taimana, ā, he mea rāhui mō te taiwhanga anake. Mena me mahere e koe te pikinga o te mārō puta noa i tētahi hononga whakarewa whaiti hei kimi i te wāhi tika i pakarukaru ai te maitai, ko Vickers anake te taputapu mō te mahi.
Ripanga Tohutoro: Te Mārō Noa mā te Taumata
Ahakoa he rerekē ngā uara MTR (Mill Test Report) motuhake, anei ngā paearu e rapuhia ana e mātou i roto i ngā māka noa:
| Tau | Taurite o te Ao | Awhe Noa (HBW) | Te Whakamahinga Noa |
| Q235B | ASTM A36 / S235 | 120 – 160 | Te whakamahinga hanganga paerewa |
| Q355B | S355 / ASTM A572 | 150 – 200 | Ngā anga kawenga teitei |
| API 5L X65 | ISO 3183 | 190 – 240 | Ngā paipa pēhanga teitei |
Tohutohu Tohunga: Mō ngā taiao "ratonga kawa" H2S, ka herea rawatia e ngā paerewa NACE MR0175 te pakeketanga ki22 HRC (tata ki te 248 HV)hei ārai i te pakaru o te waikura ahotea.
Te karo i ngā "raraunga kino": Ngā ture whakamātautau mara
Hei whiwhi i tētahi hua e tū pakari ana ki tētahi arotake, me whakahaere e koe ngā taurangi:
1.Whakamatea te paninga:Kāore e taea e koe te whakamātautau i tētahipaipa piauaumā roto i te konutea. He ngohengohe te konutea, ā, ka puta he āhua iti. Me huri e koe te mata ki raro ki te konganuku turanga.
2.Kia mataara ki te matotoru:Mena he angiangi tō pakitara, ka rere te "pānga paepae" (te pakeke o te tautoko a te mīhini) ki roto i tō hua. Me 10 ngā wā matotoru ake o tō pakitara paipa i te hohonutanga o te kōhao.
3.Kia tupato ki te mokowā:Kaua e whakarōpūhia ō whakamātautau. Mā ia pānga ka whakapakeketia te maitai e karapoti ana. Kia toru pea ngā diameter o ō pūwāhi whakamātautau kia mārama, kia motuhake hoki te pānui.
Ko te whakamātautau pakeke te parepare matua mō te pakaru o ngā rauemi. Mā te whiriwhiri i te tikanga tika—ko Brinell mō te kaha o te papatipu, ko Rockwell mō te tere, ko Vickers rānei mō te tātaritanga whakarewa taihara—ka whakarite koe kei te tutuki tō paipa maitai waro i ngā paerewa haumaru pakari o te hangarau hou.
Wā tuku: Maehe-09-2026
