Advantages of steel castings
Issuing time:2020-10-27 19:47
Advantages of steel castings
Steel casting not only has all the advantages of liquid forming, but also has the unique excellent properties of various steels. In order to make readers have a more specific
In this paper, the steel castings are compared with the metal components and alloy castings formed by other methods.
1. Compared with forged steel parts
As the pouring temperature of steel casting is higher than that of ingot, the shape of casting is also more complex, and the control ratio of solidification conditions
The ingot is much more difficult, and after that it is not processed by forging. Generally, the crystallization of steel castings is relatively coarse, hot spots and branches
It is difficult to avoid the looseness between crystals. Therefore, the properties of cast steel are often slightly inferior to that of forged steel with similar composition. But if the process of steel casting
The design is good, the solidification process is controlled properly, and then proper heat treatment is carried out
The mechanical properties of steel are similar to those of cast steel. State to state
The anisotropy of mechanical properties of cast steel is not significant, which is better than that of forged steel. The results show that: rolling steel
Generally, the longitudinal mechanical properties of the steel are slightly higher than those of the cast steel of the same brand, while the transverse properties are slightly inferior to those of the cast steel
The cast steel with good quantity is almost the same. At present, some high-tech products, in the design process of parts, often need to consider the material in three
The above advantages of steel castings are worthy of attention.
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No matter the weight and batch size of steel castings, they are easy to be made according to the designer's conception, with reasonable shape and inner wheel
Parts with high profile, high stiffness, complex shape and insignificant stress concentration. In case of single piece or small quantity production, wooden mould (pattern) can be used
The production preparation cycle is very short. When mass production, plastic or metal mold can be used, and
With proper molding process, the casting has the required dimensional accuracy and surface quality. These features are difficult to make with forgings
2. Compared with explosive connection structure
In terms of shape and size, the flexibility of welded structural parts is better than that of forged steel parts, but compared with steel castings, it still has the following advantages
1) It is easy to deform during welding;
2) Difficult to make a streamlined shape; medium
3) The internal stress of welded components is high;
4) The explosive interface affects the appearance of parts.
Of course, manufacturing welded structural parts also has the advantage of short production preparation period, and, compared with steel castings, there is no need for manufacturing
Pattern and core box.
In addition, due to the good weldability of structural steel castings used in engineering, steel castings are often made to be connected with welding parts
Combined casting and welding structure, taking advantage of both.