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Why is steel casting better than cast iron?

Published:14:11 07 Dec, 2023


Steel castings in the usual sense refer to parts and components made of cast steel in steel casting factories. Cast steel and cast iron are both common components in machinery, but cast steel has better strength and performance than cast iron.
Steel castings have many advantages and are widely used in machinery in many fields.
1. Strong adaptability and variability
By selecting appropriate chemical components, the usage requirements of various projects can be met. Steel castings can be heat treated to select an applicable range of mechanical properties, which cast iron parts do not have.
2.Strong structure
The overall structure of cast steel materials is generally stronger and more reliable for project implementation. It can effectively reduce the overall casting quality and shorten the delivery time, so it also has certain advantages in terms of economy.
3. Flexible weight
The weight of steel castings can be large or small, ranging from tens of grams to hundreds of tons, and steel castings can be easily produced through different processes. It is precisely based on these advantages that steel castings are needed in almost all industrial sectors, such as ships and vehicles, construction machinery, engineering machinery, power station equipment, mining machinery and metallurgical equipment, aviation and aerospace equipment, oil wells and chemical equipment. It is particularly widely used.

In terms of power station equipment, its parts are in high-load operation for a long time, and steel castings can meet these requirements to the greatest extent.
In terms of railway machinery, safety issues need to be ensured to the greatest extent, so some key components, such as wheels, side frames, bolsters, etc., are all traditional steel castings.
In terms of construction and engineering machinery, most of these components have poor working conditions and need to be wear-resistant and earthquake-resistant. Steel castings can effectively extend their service life and make them more durable.
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