Discount Metal hot forging For sale tells you that cutting and blanking is generally carried out on a shearing machine, which can cut steel billets with a diameter of less than 200mm. Discount Metal hot forging For sale tells you that when the steel billet is cold-sheared, large stress will be generated at the sheared part and cracks will appear. Therefore, high-carbon steel, alloy steel and steel billets with large cross-sectional dimensions need to be preheated before shearing To 350 ~ 700 ℃; for low-carbon steel, medium-carbon steel and other billets with small section sizes can be cold sheared.

Discount Metal hot forging For sale tells you that the shearing machine can be equipped with an automatic feeding and discharging mechanism. The working conditions of the workers are better, the production efficiency is high, metal is saved, and the utilization rate of materials is improved. However, the shear end surface is uneven and slightly skewed, especially when sharing a billet with a large diameter in a hot state. Shears are commonly used in mass-production die-forging shops.

Discount Metal hot forging For sale tells you that cutting and blanking can also be carried out on trimming punches, friction presses, and other equipment. Breaking and blanking are carried out on hydraulic presses or crank presses. Pressure is transmitted through the punch to the material, causing the material to snap along the pre-cut.

Discount Metal hot forging For sale tells you that pre-cutting is generally made by sawing or gas cutting before breaking. The purpose is to cause a large stress concentration at the cut to ensure that the material does not produce large plasticity when it is broken at a certain position. Deformation affects the quality of the section.