Nikara meIrahiko Whakarewa Nikara
Ni307-4
GB/T ENi6093
AWS A5.11 ENiCrFe-4
Whakaahuatanga: He irahiko nikara te Ni307-4 me te paninga konutai hauwai-iti. Whakamahia te DCEP (irahiko iahiko tika)(pai). He tino pai te mahi whakarewa me te mura pewa pumau, te iti o te tauhiuhi, te ngāwari ki te tango i te paru,
me te whitiki ataahua.
Taupānga: Ka whakamahia mō te whakarewa i ngā koranu nikara-konukōmiuma-rino, pērā i te Ni600, Ni800/800H me ngā koranu tino rite, koranu-nikara rānei, me te pāmahana mahi o te 900°C. Ka taea hoki te whakamahi mō ngā maitai pāmahana-iti kei roto ko te Ni3% ~ 9%, pērā i te ASTM A333, A334, A353, A522. Ka taea hoki te whakamahi i te whakarewa o te A553 mō te whakarewa rerekē i waenga i te Mo400, Ni825, te maitai kore waikura me te maitai koranu iti.
Te hanganga matū o te konganuku whakarewa (%):
| C | Mn | Fe | Si | Ni | Cr | Mo | Nb + Ta | S | P |
| ≤0.20 | 1.0 ~ 5.0 | ≤12.0 | ≤1.0 | ≥60.0 | 13.0 ~ 17.0 | 1.0 ~ 3.5 | 1.0 ~ 3.5 | ≤0.015 | ≤0.020 |
Ngā āhuatanga hangarau o te konganuku whakarewa:
| tūemi whakamātautau | Te kaha o te kume Mpa | Te kaha o te hua Mpa | Te whakaroa % |
| Kua whakamanahia | ≥650 | ≥360 | ≥18 |
Iahiko e taunakitia ana:
| Te whānui o te tokotoko （mm） | 2.5 | 3.2 | 4.0 |
| Iahiko whakarewa （A） | 60 ~ 90 | 80 ~ 110 | 110 ~ 150 |
Pānui:
1. Me tunu te hiko mō te 1 hāora i te pāmahana tata ki te 300℃ i mua i te mahi whakarewa;
2. He mea nui kia horoia ngā waikura, te hinu, te wai, me ngā poke i runga i ngā wāhanga whakarewa i mua i te whakarewa. Whakamātauria te whakamahi i tētahi pewa poto hei whakarewa.
