1. casting structure design tha tak a ni.
Casting wall thickness chu a theih ang anga uniform a ni a, chu chuan thermal joint a thlen loh nan mold-a local heat concentration avanga thermal fatigue awm zat tihtlem nan. casting fillets dik tak chu casting kil khatah dah tur a ni a, chutiang chuan mold-a corner na tak tak awm vanga stress awm loh vang a ni.
2. Mold structure design tha tak tak a awm bawk.
1) Mold chhunga component tin hian deformation awm lovin pressure tuar thei tur rigidity leh strength an nei tling tur a ni. Mold wall thickness chu deformation tihtlem nan a tawk tur a ni.
2) Gating system hi core.-a nghawng leh erosion awm thei lo tura siam a ni.
3) Component tinte tolerance fit leh surface roughness dik taka thlang rawh.
4) Mold heat balance awm reng theihna.
3. Heat hmanga enkawlna kalpui dan tur sawifiahna .
Metallurgical structure chu heat treatment hmangin a thlak theih a, chu chuan a mamawh chakna, a khauh a, temperature sang takah dimensional stability, thermal fatigue resistance leh material cutting performance. a enfiah thei a ni.
Heat treatment dik tak chuan mold performance tha ber a thlen ang a, chutih laiin steel property te chu temperature leh time quenching, cooling rate leh tempering temperature. hmangin control a ni ang.
