The Influence of Material Defects in Forgings

Manufacturing processes for various components in industrial settings involve intricate procedures, often prone to specific challenges that can impact product quality. From oblique cutting to end cracks and gas cutting cracks, each issue poses unique risks during manufacturing and forging operations. Addressing these challenges requires a comprehensive understanding of their causes and potential solutions to ensure the integrity and reliability of the final forged parts.

1. Oblique Cutting
Oblique cutting, also known as slant cutting, pertains to the angular deviation observed in the end face of a blank in comparison to its longitudinal axis during the loading and unloading process on sawing or punching machines. When severe slant occurs, there is a risk of the material folding during forging operations, potentially leading to defects in the final product. Thus, it is essential to mitigate slanting issues to ensure the integrity and quality of the manufactured components.

2. Burr Formation at the End of Blanks

During the feeding and unloading process on cutting or punching machines, the end of the blank may become bent and develop burrs. This occurs when there is excessive clearance between the scissors or cutting die edge, or when the edge is dull. Consequently, the blank bends before it is properly cut, causing some of the metal to be squeezed into the clearance of the blade or die. This results in the formation of protruding burrs at the end of the blank.

Blanks with burrs are susceptible to local overheating and excessive burning during heating processes. Additionally, they are prone to folding and cracking when subjected to forging operations. Therefore, it is crucial to address issues related to burr formation to prevent defects and ensure the quality of the manufactured parts.