AWS A5.1 E7018-1 H4
EN ISO 2560-AE 46 4 B 12 H5
JIS Z 3211 E4918-1 H5
Ngā Āhuatanga me te Whakamahinga
Ko ngā tokotoko whakarewa AWS A5.1 E7018-1 H4, he momo hiko whakarewa paura-rino iti-hauwai mō te whakarewa i ngā tūranga katoa o te maitai kume teitei 490N/mm2. He mea hanga mō ngā tono whakawhiti kotahi me ngā tono whakawhiti maha. He pai te āhua o te hua whakarewa, ā, ka puta he pewa pumau me te iti o te whakaputanga tauhiuhi. Ka puta he konganuku whakarewa me ngā āhuatanga miihini tino pai me te pakari pānga i te pāmahana iti (-45℃) me te iti o te hauwai horapa. Nā ōna āhuatanga ka pai te hua mō ngā maitai koranu iti, ngā maitai waro waenga, ngā pereti maitai taumaha, ngā maitai whakarewa, te maitai konumohe whakamate o te LPG, ā, mō te whakarewa i ngā maitai he ngoikore te kaha whakarewa.
Te Hanganga Matū Noa o te Mea Whakarewa (%)
| C | Mn | Si | P | S |
| 0.065 | 1.40 | 0.60 | 0.020 | 0.070 |
Ngā Āhuatanga Ā-Mīhini Noa o te Mea Whakarewa
| Te kaha o te hua | Te kaha o te kume | Te whakaroa | Charpy V-Notch (-45℃) |
| 520Mpa | 620Mpa | 32% | 120J |
Ngā tuhipoka mō te whakamahinga:
1. Ki te kore te āhua rokiroki e mau, ā, kāore hoki te takai e pakaru, ka tino taunaki mātou kia whakamarokehia ngā hiko i te 350-400℃ mō te 1-2 hāora i mua i te whakamahinga.
2. Whakamahia te tikanga whakamuri hei ārai i ngā pūhao i te tīmatanga o te pewa.
3. He mea tino taunaki kia poto te pewa hei ārai i te kohikohinga o te makuku.
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