Ko te whakamahana otinga, e mōhiotia ana ko te maimoatanga otinga, he tukanga maimoatanga wera e whakamahia ana hei whakapai ake i te ātete ki te waikura, ngā āhuatanga hangarau, me te ōritetanga hanganga o te maitai kore waikura.
He aha te whakamahana?
Te whakamahanaHe tukanga whakamahana wera te mea i hangaia hei whakarei ake i te ngāwari me te ngāwari o te mahi o ngā rauemi mā te whakaiti i te pakeketanga me te whakamama i ngā ahotea o roto. Kei roto i te tukanga te whakamahana whakahaere ki tētahi pāmahana motuhake, te pupuri i taua pāmahana kia taea ai te whakarerekētanga hanganga, kātahi ka whakaroa te whakamatao—i roto i te oumu i te nuinga o te wā. Ka whakapai ake te whakamahana i te hanganga moroiti o te rauemi, kia ōrite ake, kia pumau ake. He mea whakamahi noa ki ngā konganuku pēnei i te maitai, te parahi, me te parahi, tae atu ki ngā rauemi pēnei i te karāhe me ētahi pūmua hei whakapai ake i ō rātou āhuatanga miihini me te tukatuka.
He aha te maitai kore waikura kua whakawerahia?
Kowiri tira kua whakawerahiahe kowiri tira kua pāngia e te maimoatanga wera whakamahana hei whakarei ake i ōna āhuatanga. Ko tēnei tukanga ko te whakamahana i te maitai ki te pāmahana kua tohua, kātahi ka whakamatao mārire hei whakaiti i ngā ahotea o roto, hei whakapai ake i te ngāwari, hei whakangawari hoki i te rauemi. Nō reira, he pai ake te kaha o te miihini i te kowiri tira kua whakamahanahia, he pai ake te hanga, ā, he pai ake te ātete ki te waikura i tōna hoa kāore i rongoatia.
He aha te kaupapa o te whakamahana i te maitai kore waikura?
1. Whakakorehia ngā Taumahatanga Intergranular me te Whakaora i te Ātete Waikura
Mā te whakarewa i ngā waro chromium (hei tauira, Cr₃C₂) ki roto i te anga austenitic, ka ārai te maimoatanga otinga i te hanganga o ngā rohe kua pau te chromium, ā, ka whakapai ake i te ātete ki te waikura intergranular.
2. Whakatutuki i tētahi Hanganga Moroiti Austenitic Homogeneous
Mā te whakamahana i te maitai kore waikura ki ngā pāmahana teitei (te nuinga o te wā 1050°C–1150°C) ā, muri iho ka tere te tinei, ka puta he wāhanga austenitic ōrite, pumau hoki, ka whakarei ake i te mahi whānui o te rauemi.
3. Whakapai ake i te ngāwari me te pakari
Ka whakamama te maimoatanga i ngā ahotea o roto, ka whakatairanga hoki i te whakamahine o te witi, ka pai ake ai te hanga me te ātete ki te pānga.
4. Whakapai ake i te Āheinga Mīhini
Mō ngā maitai kore waikura i mahi mataohia, ka tangohia e te whakamahana otinga ngā pānga whakapakeketanga mahi, ka māmā ake ai te mahi miihini me te hanga i ngā tukatuka e whai ake nei.
5. Whakapaia ngā rauemi mō ngā maimoatanga wera anō
Mā te whakamahana otinga ka whakaratohia he turanga hanganga moroiti e tika ana mō ngā tukanga pēnei i te koroheketanga, te whakarewa rānei, inā koa mō ngā maitai kore waikura kua whakapakeketia e te ua, ngā maitai kore waikura takirua rānei.
Ngā tauira o ngā momo maitai e tika ana
• Kowiri tira Austenitic (pēnei i te 304, 316, 321): Whakakorehia te āhua o te waikura intergranular
• Te whakapakeketanga o te rino kowiri tira (pērā i te 17-4PH): Te maimoatanga wairewa, ā, muri iho ka pakeke haere
• Kowiri tira takirua (pēnei i te 2205, 2507): Ka whakamahia te maimoatanga otinga hei whiwhi i te ōwehenga austenite + ferrite tino pai
Wā tuku: Mei-16-2025