Overview of sand casting technology
Before producing sand castings, we should first prepare more scientific documents that can control the production process of this kind […]
Before producing sand castings, we should first prepare more scientific documents that can control the production process of this kind […]
Fig. 1 shows the temperature field changes of sand castings at 10s, 60s, 130s and 340s after the molten metal
Observing the change of temperature field in the solidification process of sand castings can accurately predict the location of shrinkage
In order to reduce the process cost, the mold filling process and casting cooling process were studied respectively. The Nodular
ProCAST software is used as sand mold casting simulation software to solve the interface heat transfer coefficient, but there are
The first Pouring Scheme of cylinder head – the temperature field distribution of sand casting with single side top injection
(1) Improvement scheme of sand casting process improvement measures for defects such as sand holes and pores are as follows.
According to the design of sand core, riser and gating system, the general assembly drawing and explosion drawing of sand
All the mandatory clauses in the current nine mandatory national standards for foundry machinery have been integrated, streamlined and revised
With the continuous development of mechanization and integrated construction in China, the scale of construction machinery industry is expanding year
Since the sand casting material is aluminum alloy ZL105, an open gating system is adopted. It has the following characteristics:
(1) Gating system optimization. Aiming at the problem of unstable liquid metal filling, the gating system was improved. The optimized
The reasonable gating system, riser, pouring temperature, pouring speed and other boundary conditions are optimized by using the criteria of
Through the analysis of the failed parts by the method of factor diagram, the reasons for the fracture of the
(1) Mold filling simulation analysis. Figure 1 and Figure 2 are the simulation diagrams of sand casting at 7.5 s
(1) Task setting: select sand casting, mold filling analysis and heat / solidification analysis before and after mold filling. (2)
The pouring position of sand mold casting is the position of the casting in the mold during pouring. It directly
The design of sand casting process plays a key role in the quality of castings. The traditional process design of
The sand casting process adopts two box molding and furan resin sand molding and core making. The diameter of the
ZL105 aluminum alloy has low density, high strength and good casting properties. It has been applied to automobile, machine tool,
Through the research, a complete process route of rapid sand mold casting is obtained. ① ugnx8 0 software to establish
The working environment of engine cylinder head in the engine is poor, which needs to bear high thermal load and
According to the analysis of sand casting process, the design of three gating systems is put forward. The influence of
For the second Pouring Scheme of cylinder head, the temperature field distribution of symmetrical top injection inner gate during mold
Firstly, the sand core design and block processing of the model are carried out. At the same time, the block
The temperature cooling curve of sand castings in phenolic urethane resin sand is shown in the figure. From figure (a),
According to the sand mold casting process CAD system developed by the laboratory, the casting process design is carried out.
The riser is to compensate for the possible shrinkage during the formation of sand castings, prevent the shrinkage cavity and
With the development of economy, China’s automobile industry has developed rapidly, but it is facing the problems of unreasonable industrial
The gating system of sand casting is used to guide the liquid metal into the mold cavity. According to the