Lost foam casting process for cast steel valve body
The lost foam casting process of cast steel butterfly valve body was studied and improved by numerical simulation, and ug8 […]
The lost foam casting process of cast steel butterfly valve body was studied and improved by numerical simulation, and ug8 […]
1. Structural analysis of cylinder block The schematic diagram of a 12 cylinder block is shown in Figure 1. The
1. Vibration consistency test Take 18 positions on the sand box, and take 3 ~ 4 points at different heights
1. lost foam casting vibrating system ZHY casting adopts 20 ~ 40 mesh quartz sand and manual bag sand adding
(1) Simulation results and analysis of mold filling process Figure 1 (a) – (f) shows the change process of mold
(1) Simulation results of mold filling process Figure 1 (a) – (f) shows the change process of mold filling temperature
Lost foam casting technology has the advantages of wide application range, accurate size and shape of lost foam casting, smooth
The figure shows the solidification of cast steel valve body castings at different times. It can be seen from the
Role of lost foam casting coating in lost foam casting The function of lost foam casting coating is to support
For example, the liquid filling state of the casting at different times is represented. The red represents the molten metal
Lost foam casting is a kind of casting technology. There will be various casting defects in the casting process, which
The valve body lost foam casting process design produced by ZHY Casting refers to the process scheme of other similar
There are certain specifications and requirements for lost foam casting, and the following aspects should be paid attention to in
Lost foam castings have accurate size and shape, good repeatability and the characteristics of precision casting; The surface finish of
Lost Foam Casting Technology (EPC or LFC) is made of foam plastic, which is exactly the same as the structure
Equipment use This set of equipment and process integrates the advantages of solid mold and vacuum casting. It is suitable
The pin holes, slag inclusion defects of cast aluminum parts, wrinkle of iron castings, carbon defects of steel castings, and
Type Stand alone or simple Generally, 1-2 three-dimensional shaking tables (for molding) and several to more than 10 special sand
The main difference between lost foam casting and other castings is that the pattern remains in the mold. When the
In lost foam casting, under normal circumstances, there are many factors affecting the dimensional accuracy of casting, such as the
In recent years, lost foam casting has developed rapidly in China, and the development results are also gratifying. Among them,
In 1958, H.F.shroyer of the United States invented patent technology for making metal castings by using foamed plastic pattern and
Due to the structural characteristics of the axle housing, the spiral case opening can only be placed upward and horizontally.
Lost foam casting process includes riser system design, pouring temperature control, pouring operation control, negative pressure control and so on.
The introduction of lost foam casting process by some manufacturers is not cautious and scientific enough, lack of in-depth understanding
In recent years, lost foam casting has developed rapidly in China, and the development results are also gratifying. Among them,
Lost Foam Casting (also called real mold casting) is a new type of casting method that combines the wax or
Bucket teeth are the main vulnerable parts of the open pit excavator. The casting has a unit weight of 130kg,
1. Pattern making The quality of pattern is one of the keys to the success or failure of lost foam
Lost foam casting technology is made of polystyrene foam through the foaming process and the shape of the needed castings.