Steel for large forgings

Steel for Large Forgings

Forgings have been used for hundreds of years to create parts that are stronger and last longer than those made from other materials. Over the years, steel has become the most popular metal for forging. The best steel for large forgings must be strong and malleable enough to produce the desired shapes and sizes without molding or welding. It should also resist strain aging and toughness, while still being able to maintain its properties over time.

When choosing steel for large forgings, there are many factors to consider. The most important thing is to choose a steel that will give the desired characteristics for the application. Different kinds of steels have different properties, so its important to select the steel that fits the applications needs.

One type of steel commonly used for large size forgings is carbon steel. Carbon steel is commonly chosen because it offers excellent strength and durability. It also offers good corrosion resistance and weldability. By changing the amount of carbon in the steel, the characteristics of the steel can be altered as well. For example, increasing the carbon level increases the strength and hardness, while decreasing the carbon decreases the strength and increases ductility.

Another type of steel suitable for large forgings is nickel alloy steel. Nickel alloy steel is usually chosen because it provides excellent strength and toughness. It is also highly resistant to corrosion, oxidation and abrasion. This makes it a great choice for applications that need to withstand extreme temperatures and pressures.

To ensure the desired properties of the steel, it is essential that the largest forgings be made from high quality steel that has been well machined and examined. It is also important to check the surface finish of the steel and make sure that it is free from debris, scratches and burrs. All of these factors will affect the performance of the item when subjected to extreme temperatures, pressures and other conditions.

For large forgings, it is important to adhere to strict tolerances and high quality standards. This is to ensure that the forgings will be able to perform as required and meet customer needs. Proper heat treatment and inspection are also important to ensure that the steel meets the required requirements.

Steel for large forgings needs to be carefully selected to meet the needs of the application. The right alloy, along with the right machining and heat treatment, can make it perfect for large forgings. When selecting the best steel for large forgings, the key is to find the right combination of strength and toughness that fits the required application. By following these guidelines, you can ensure that the forgings will perform as desired and be durable and reliable.

High Strength Steel for Forging

High strength steel (HSS) is a kind of steel mainly used in the production of large forgings, such as crankshafts, connecting rods, turbine discs and blades, and car transmission parts. Among them, parts related to crankshafts and connecting rods account for more than 80%. Generally, high strength steel refers to the carbon content is 0.5%~0.9%, and the mechanical properties higher than the common carbon steel, such as tensile strength greater than or equal to 700MPa.

High strength steel is one of the important development directions of steel, which is widely used in aerospace, electric power, machine manufacturing, chlorine-alkali and other industries, and has broad application prospects. The quality of forging parts mainly depends on the properties and structure of the material.

According to different production methods, high-strength steel can be divided into two categories: direct hot-working quenched and tempered steel and pre-quenched and tempered steel. Direct hot working quenched and tempered steel can improve the cold and heat plasticity, toughness, heat strength and fatigue strength of the steel. It can be processed by hot working directly without pre-quenching and tempering. Pre-quenching and tempering steel is to pre-quench and temper the round steel or rolled plate to improve the plasticity of the steel in the later hot working stage.

Although the high-strength steel has a series of advantages such as good forging performance, low forging temperature and low forging pressure, its forging deformation is large, mechanical performance is anisotropic and there are some metallurgical risks. Therefore, the selection and control of the corresponding parameters during forging are very important.

High-strength steel is widely used in the forging processing of large parts. In order to control the defects such as large material deformation, cracks and coarse grain during forging process, it is necessary to choose the appropriate production process, establish reasonable forging die design, and ensure its parameters are correct.