Sheet metal scissors, as the name suggests, are machines used to cut metal sheets.
Material selection is based on the general Q235 board.
If you are cutting Q345 board, the model should be chosen 1.4 times larger. If cutting stainless steel, the model should be chosen 1.6-2 times larger. If you are cutting 10-40mm sheets, a guillotine shear is the best choice.
Check out How to distinguish Q235 and Q345 steel plate.
Overview
Metal shears are widely used in the sheet metal manufacturing industry and can cut a variety of thicknesses of steel sheets. The machine used is called quadrature scissors, electric scissors or guillotine. It can be moved by foot, manually (less commonly) or by mechanisms such as mechanical or hydraulic. The material is first clamped with a ram and then a movable blade descends over a stationary blade to cut the material.
Metal scissors classification:
Generally, sheet metal cutting machines can be divided into several types: pedal-operated shears, mechanical shears, swing beam hydraulic shears, guillotine hydraulic shears and CNC-controlled hydraulic shears.
Hydraulic shears work by moving the upper blade and fixed blade with a reasonable blade clearance to apply a shear force to metal plates of various thicknesses, resulting in cutting the plate to the required size.
Sheet metal shears are often used to cut blanks with straight edges. The shearing process must ensure that the shear surface is linear and parallel to the required specifications and minimize plate distortion to produce high-quality parts.
Metal cutting shears are a type of forging machine, mainly used in the metal processing industry. These products are widely used in industries such as light industry, aviation, shipbuilding, metallurgy, instrumentation, household appliances, stainless steel products, steel construction and decoration.
Plate Shear Definition
According to the Machinery Industry Standard of the People's Republic of China, a sheet metal shear is defined as:
Machine that uses a blade that moves in a straight line against another blade to cut a sheet.
Classification
Special scissors for metal
Often, metal shears are used in conjunction with other equipment to serve specific purposes:
- Cold formed line plate cutting machines: These shears are especially used in automobile longitudinal beam cold bending lines, automobile side baffle production lines and color plate forming lines.
- Metal shears used in steel structure production lines: They are mainly used in automatic angle steel and H beam production lines to complete the cutting process.
- Open Line Metal Shears for Plates: These are designed for plate unwinding lines to meet the requirements of fast production lines.
Thick plate lines mainly use high-speed hydraulic plate cutting machines, while thin plate lines are generally equipped with pneumatic metal cutting machines. High-speed lines utilize flying shear machines, known for their continuous production and high efficiency.
Slant-Blade Scissors
The top and bottom blades of the metal cutting machine are angled, with the top blade typically tilted at an angle of 1° to 6°.
The cutting force of a slanted blade shear is lower than that of a flat blade shear, which leads to a reduction in engine power and the total weight of the machine.
Flat Blade Scissors
The shear quality is good with minimal torsional deformation, but it requires large shear force and energy consumption. Most machines use mechanical transmission.
The cutting edges of the cutting machine are parallel to each other and are commonly used in rolling mills for hot shearing of billets and slabs. They can be divided into top-cut and under-cut methods.
Multipurpose Metal Scissors
Joint punching and shearing machine (blacksmith machine): This machine is used to complete the shearing of plates as well as cutting profiles, and is mainly used for the stamping process.
Sheet metal cutting and bending machine: This machine can complete the cutting and bending processes in the same machine.
