There are a wide range of forgings, which can be divided into various grades of steel and high-temperature alloys, as well as non-ferrous metals such as aluminum, magnesium, titanium, and copper; at the same time, they can also be processed into various specifications of bars, profiles, and domestic materials suitable for my country’s resources. There are materials from abroad.
Most of the forging materials have been included in the national standards, many of which are new materials developed, tested and promoted. We all know that the quality of products is often closely related to the quality of raw materials, so forging workers must have the necessary material knowledge and be good at selecting the most suitable materials according to the process requirements.
Feeding and feeding are one of the important links to improve the material utilization rate of aluminum forgings and realize the refinement of blanks. Excessive material is not only wasted, but also increases cylinder wear and energy consumption. If the blanker does not leave a little excess, it will increase the difficulty of process adjustment and increase the scrap rate. In addition, the quality of the blanking end face will also affect the process and quality of the forging.
The purpose of heat treatment is to reduce the deformation force of the forging and improve the plasticity of the metal. But heating can also cause a series of problems, such as oxidation, decarburization, overheating, overburning, and so on. Precisely controlling the final forging temperature of forgings has a great influence on the structure and properties of the product.
Burner heating has the advantages of low cost and strong adaptability, but the heating time is long, it is easy to produce oxidation and decarbonization, and the working conditions also need to be continuously improved. Inductive heating has the advantages of fast heating and less oxidation, but it has poor adaptability to changes in product shape, size and material.
Forging is formed under the action of external force. Therefore, correct calculation of deformation force is the basis for selecting equipment and performing mold inspection. In terms of optimizing the process and controlling the microstructure and properties of the forging, the stress-strain analysis inside the deformed body is also essential.
The cost of forging production materials in the Central Plains generally accounts for 50% to 70% of the production cost of forgings. Saving raw materials is the main means to reduce the production cost of forgings.
Try to change the cutting material to cutting or precision cutting, develop new precision cutting methods and equipment, promote the development of band sawing machines, and develop new high-speed circular saw blades or high-speed circular saws with bimetallic edge circular saw blades. machine. Replacing some sawing machines is the main measure to improve the blanking productivity of aluminum forgings, reduce blanking losses and save raw materials.