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压铸生产中,分型面金属液喷溅现象,有不少属于模具设计计算方面的问题。为说明问题的方便,见下图所示的模具。一、分型面胀型力的计算: 通常按公式KQ≥P选用压铸机。式中:K为安全系数,常为0.85～0.9。Q为机器额定锁模力。P为分型面上的胀型力。此例中的胀型力不能简单地用F_1·q来表示。F_1为包括浇注系统和集渣包在内的铸件在模具分型面的投影面积,q为压铸比压。胀型力应由以下三个力组成: 即:P=P_1+Na+S式中:P_1=q·F_1 Na=P_2h_2/la=qF_2h_2/la
Die-casting production, parting surface splashing of liquid metal, there are many mold design and calculation problems. To illustrate the convenience of the problem, see the mold shown below. First, the sub-type surface bulging force calculation: Generally used by the formula KQ ≥ P die-casting machine. Where: K is the safety factor, often 0.85 ~ 0.9. Q is the machine rated clamping force. P is the bulging force on the parting surface. The bulging force in this case can not be simply expressed by F_1 · q. F_1 is the casting area of the casting mold including the casting system and the slag package, and q is the specific pressure of the die casting. Expansion force should be composed of the following three forces: namely: P = P_1 + Na + S Where: P_1 = q · F_1 Na = P_2h_2 / la = qF_2h_2 / la