我厂批量生产的某汽车铸件,采用湿压强度为0.6～1kg/cm~2型砂,用普通型板在Z145B造型机上造型时,其铸型上φ214×80吊砂起模时90％以上都从根部断裂,如图1所示,故无法进行实际生产。为了解决这一问题,起初我们在型板设计上,只把原型板与吊砂接触的型面部分改为两半活块结构(如图1),力图在起模时使吊砂能将活块带出,再在铸型离开造型机后,手工将活块从铸型水平方向取 I plant mass production of a car castings, the use of wet compressive strength of 0.6 ~ 1kg / cm ~ 2 sand, with a common model Z145B molding machine modeling, the mold on the φ214 × 80 hanging sand molding more than 90% Fracture from the root, shown in Figure 1, so it can not be the actual production. In order to solve this problem, at first we only changed the part of the profile that the prototyping board is in contact with the grit into two halves, as shown in Figure 1, in the design of the gob, trying to make the grit sand alive Take out the block, and then leave the molding machine in the mold, the manual will be taken from the mold horizontal direction