Mō ngā ngongo maitai 20# me te matotoru o te pakitara tae atu ki te 87mm, he mea tino nui te kounga o roto, nā te mea ka taea e ngā kapiti me ngā poke iti rawa te whakararu i te kounga o te hanganga me te mahi, ā, ka taea e te whakamātautau ultrasonic te tautuhi i ēnei hapa pea.
Ko te whakamātautau ultrasonic, e mōhiotia ana ko te UT, he tikanga whakamātautau kore-whakangaro e whakamahi ana i ngā āhuatanga o te whakaata, te huripokitanga, me te whakaiti i ngā ngaru ultrasonic i a rātou e horapa ana i roto i tētahi rauemi hei kimi i ngā hapa i roto i te rauemi.
Ina tūtaki te ngaru ultrasonic ki ngā hapa i roto i te rauemi pērā i ngā kapiti, ngā whakaurunga, ngā kōhao rānei, ka puta he ngaru whakaata, ā, ka taea te whakatau i te tauwāhi, te āhua me te rahi o ngā hapa mā te whiwhi i ēnei ngaru whakaata.
Mā te tirotiro tupato, ka whakarite kia kore he hapa o te paipa rino katoa, ā, kia tutuki katoa hoki i ngā paerewa me ngā whakaritenga a ngā kiritaki.
He kaihanga paipa maitai whakarewa ngaio, pono hoki a Botop, ā, he toa paipa maitai kore hononga hoki i Haina, e tuku ana i ngā hua paipa maitai ki a koe me te kounga pono me te utu whakataetae. Ka oati mātou ki te tautoko i te whakahaere tirotiro tuatoru mō ngā taonga katoa e hokona ana e mātou, ā, ka whakarite mātou i ngā kaitirotiro ki te tirotiro anō i ngā paipa maitai ina tukuna ia puranga paipa maitai kia pai ai te kounga o ngā paipa maitai.
Ko te GB/T 8162 he paerewa whakatakotoranga i tukuna e Haina mōngā paipa maitai kore honongamō ngā kaupapa hanganga. Ko te 20# he kounga maitai waro noa me ngā āhuatanga hangarau me te tukatuka pai, e whakamahia whānuitia ana i roto i ngā hanganga whare me ngā hanganga miihini.
Ko ngā whakaritenga mō te hanganga matū me te āhuatanga ā-mīhini o te GB/T 8162 Grade 20 e whai ake nei:
GB/T 8162 Tau 20 Hanganga Matū:
| Te taumata maitai | Te hanganga matū, i roto i te % mā te papatipu | |||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | |
| 20 | 0.17 - 0.23 | 0.17 - 0.37 | 0.35 - 0.65 | 0.035 mōrahi | 0.035 mōrahi | 0.25 mōrahi | 0.30 mōrahi | 0.25 mōrahi |
Ngā Āhuatanga Ā-ringa o te GB/T 8162 Tau 20:
| Te taumata maitai | Kaha Kume Rm MPa | Te Kaha Tuku ReL MPa | Te Toronga A % | ||
| Diameter Ingoa S | |||||
| ≤16 mm | ＞16 mm ≤30 mm | ＞30 mm | |||
| 20 | ≥410 | 245 | 235 | 225 | 20 |
Wā tuku: Oketopa-15-2024