1. Improve the stiffness and strength of lost foam casting sand box The bottom of lost foam casting sand box is reinforced with #10 channel steel. On the one hand, the stiffness is increased; On the other hand, the lost foam casting sand box is connected into an integral...
Lost foam casting requires that the molding sand can fill the mold space tightly during molding. Therefore, the vibrating system is one of the key equipment. The factors affecting the compaction effect include molding sand, sand adding device, sand box, compaction table and control system. Baozhu sand is better...
As the core component of the engine, the cylinder block has complex structure, high precision requirements and difficult forming. lost foam casting cylinder block has the characteristics of flexible casting structure design, no sand core, convenient cleaning, high production efficiency and low cost. With the development of lost foam...
According to the simulation results of lost foam casting defects of cast steel valve body and the comprehensive analysis of the location distribution of shrinkage cavity and porosity defects of lost foam castings of cast steel valve body poured by the first process scheme, the position and size of...
Fig. 1 and Fig. 2 are respectively solidification time nephogram and solid rate change diagram of ZY direction section plane of cast steel valve body EPC casting. The cross sections in Figures 1 and 2 are cut at the center in the ZY direction, and the time points are...
According to the analysis of the original process scheme of the valve body, it can be seen that the improper placement of the gate and riser of the original process leads to serious shrinkage cavity and porosity defects in the lost foam casting of the cast steel valve body,...
Figure 1 shows the distribution of shrinkage cavity and porosity predicted by numerical simulation technology under the original process scheme. Fig. 2 is the shrinkage cavity distribution diagram obtained by the direct analysis method. We can see that there are obvious shrinkage cavity and shrinkage porosity defects at the...
Lost mold casting has experienced the following three stages of development: The first stage is the American H.F. Sloy (Shroyer) in 1956 invented the solid casting method, referred to as the F method. Its operation process is to make parts with foam shape, use sand with binder, and then...
ZHY casting adopts 20 ~ 40 mesh quartz sand and manual bag sand adding method. The size of sand box is 1450mm × 1 200 mm × 1 000mm, lost foam casting sand box structure is shown in Figure 1. The vibrating table adopts GK free floating vibrating table....
Lost foam casting requires that the molding sand can fill the mold space tightly during molding. Therefore, the vibrating system is one of the key equipment. The factors affecting the compaction effect include molding sand, sand adding device, sand box, compaction table and control system. Baozhu sand is better...