Choyeretsera cha Copper ndi Copper Alloy
T207
GB/T ECuSi-B
AWS A5.6 ECuSi
Kufotokozera: T207 ndi electrode ya mkuwa yokhala ndi silicon bronze core ndi low hydrogen sodium coating. Gwiritsani ntchito DCEP (direct current electrode positive) yokhala ndi mphamvu zabwino zamakaniko. Ili ndi kukana dzimbiri kwa ma inorganic acid kupatula nitric acid, ma organic acid ambiri ndi madzi a m'nyanja.
Kugwiritsa Ntchito: Ndikoyenera kuwotcherera mkuwa, silicon bronze ndi mkuwa, kuwotcherera pamwamba pa zingwe za mapaipi amakina a mankhwala, ndi zina zotero.
Kapangidwe ka mankhwala a chitsulo chosungunula (%):
| Cu | Si | Mn | Pb | Al+Ni+Zn |
| ＞92.0 | 2.5 ~ 4.0 | ≤3.0 | ≤0.02 | ≤0.50 |
Kapangidwe ka makina a chitsulo chosungunula:
| 试验项目 Chinthu choyesera | 抗拉强度 Kulimba kwamakokedwe Mpa | 延伸率 Kutalikitsa % |
| 保证值 Chotsimikizika | ≥270 | ≥20 |
Mphamvu yovomerezeka:
| M'mimba mwake wa ndodo (mm) | 3.2 | 4.0 | 5.0 |
| kuwotcherera Current (A) | 90 ~ 130 | 110 ~ 160 | 150 ~ 200 |
Zindikirani:
Kusamalitsa:
1. Electrode iyenera kuphikidwa pa kutentha kwa pafupifupi 300°C kwa ola limodzi kapena awiri isanawotchedzeredwe;
2. Chinyezi, mafuta, ma oxide ndi zinthu zina zodetsa pamwamba pa weldment ziyenera kuchotsedwa musanawotchere.
3. Mukalumikiza silicon bronze kapena surfacing welding pa chitsulo, sikufunika kutentha koyambirira. Kutentha koyambirira kwa kulumikiza mkuwa woyera ndi pafupifupi 450°C, ndipo kutentha koyambirira kwa kulumikiza mkuwa ndi pafupifupi 300°C;
4. Kuwotcherera kwafupi-arc kuyenera kugwiritsidwa ntchito powotcherera. Pa kuwotcherera kwa multilayer, slag pakati pa zigawo iyenera kukhala
kuchotsedwa kwathunthu; mukamaliza kuwotcherera, gwirani chowotcherera ndi nyundo yathyathyathya kuti muyeretse mbewuzo, kuchotsa kupsinjika, ndikuwonjezera mphamvu ndi kusinthasintha kwa chowotchereracho.
