Die castings ni a n kaja ai lam ni hta, grau sawng ai ni gaw pores. Stomata arawn alai ni lawm ai. Shi a ntsa n-gun n rawng ai hte hkrang hku shinggrup ai (sh) oval rai nga ai{2}}, tsun shaga ai lam a hkrang gaw, n-gup magap a ntsa, shing nrai, n-gup magap npu, shing nrai, n-gup magap npu e, shing nrai, casting a npu e, n-gup magap a ntsa e rai mai ai.
(1. (1) .
1) Alloy liquid kaw na gas hpe htu bang ai - n-gun n rawng ai arung arai ni b
2) Gas a gaw die casting galaw ai lam hta lawm nna, die casting process parameters{1} b{2}} hte matut mahkai nga ai.
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(2) raw materials hte smelting galaw ai lam ni hpe Gas sawk sagawn ai lam
Aluminium ntsin hta lawm ai gas gaw madung hku nna hydrogen rai nna, dai gaw gas a yawng hta na 85% daram rai nga ai.}.
Hka lum ai nbung katsi ai lam grau law wa yang, aluminum ntsin hta hydrogen a hka lim ai lam grau law wa ai, raitim, aluminum hta hka lim ai lam gaw grai yawm ai majaw, solidification galaw ai aten hta, hydrogen gaw pores. hpe hpaw shabawn wa ai.
Hydrogen a npawt nhpang:
1) Nbung kata na hka n-gun hpe hka lim ai kaw na hydrogen hpe hkap la ai.}.
2) raw material hkum nan hta hydrogen lawm nna, alloy ingot a ntsa gaw hka lim ai, dai arung arai gaw n san seng ai hte sau rawng ai. nga ai.
3) Arung arai ni hte flux ni gaw hka lim ai. ni re.
(3) Die casting galaw ai shaloi gas hpe sawk sagawn ai
N-gun n-gun, hka htung hka htung, hka htung ni yawng hpe nbung hte matut da ai majaw, molten metal gaw n-gun kaba hte lawan ai hku hpring chyat nga ai, n-gun ja ai hte n-gun ja ai lwi ai masa hpe n lu galaw ai rai yang, molten metal gaw eddy current hpe shabyin ya nna, gas hpe shinggrup da ai.
