The blade material of shearing machine is generally T10, 9CrSI, 6CrW2Si, Cr12MoV, H13, alloy steel and other materials. Products are widely used in : light industry, aviation, shipbuilding, metallurgy, instrumentation, electrical appliances, stainless steel products, steel structure construction and decoration industries.
The shearing machine uses moving upper blade and a fixed lower blade, and use reasonable blade gap to apply shearing force to metal sheets of various thicknesses to break and separate the sheets according to the required size. The shearing machine is a kind of forging machinery, and its main function is metal processing industry. General shears can be divided into: pedal type (manpower), mechanical type, hydraulic swing type, hydraulic guillotine type.
Shearing machines are often used to cut blanks with straight edges. The shearing process should be able to ensure the straightness and parallelism requirements of the shear surface of the sheared sheet, and minimize the distortion of the sheet to obtain high-quality workpieces.
Blade material
The materials selected for the shear blades are divided into three categories: carbon-bonded tool steel, low-alloy tool steel, alloy tool steel, etc.
1. Carbon-bonded tool steel: Carbon-bonded steel is generally selected from 65, 75 steel, T8, T10 and other materials. The heat treatment hardness of the blades produced by this material is within the range of HRC57-59 degrees, which is suitable for ordinary low-carbon cold-rolled plates and ordinary A3 plates. Compared with the recycling and cutting of waste materials, this feature is low cost and reasonable product price.
2. Low-alloy tools: The commonly used materials for the blades of low-alloy tool steel are: 6Crw2sI, Cr5Mo1V, 9CrSi, Cr12MoV, etc. The heat treatment hardness of the blade is within the range of HRC58-62 degrees. It is specially cut stainless steel, suitable for hot-rolled plates, stainless steel, Shearing of medium and thick plates.
3. Alloy tool steel: The shear blade materials of alloy tool steel are: 4Cr5MoSiV1 (H13K), 7Cr7Mo2V2Si9 (LD), W6Mo5Cr4V2 (6542), H13, etc. The blade of this material is used for hot-rolled steel billets, hot-cutting medium and thick steel plates, etc. This feature is high temperature resistance, not easy to anneal, and is used for hot-rolling and hot-shearing processes in steel mills
Instructions
1. Start the shearing machine for few cycles of idling to ensure that under normal conditions, test cuts of different thicknesses, from thin to thick. Ensure that the user is familiar with the blade performance of the hydraulic guillotine shears.
2. Different blade gaps must be adjusted for different plate thicknesses during trial cutting. If the corresponding blade gap is not adjusted, the durability of the blade will be affected.
3. Open the pressure gauge switch during the cutting process and observe the oil pressure value. The pressure should be less than 20MPa when cutting a 12mm plate. This remote pressure regulating valve No9, the pressure is set to 20-22MPa when leaving the factory, the user must abide by this regulation, and shall not increase the pressure for cutting the material surface beyond the specified material and cause damage to the machine.
4. Sound balance during operation. If there is noise in the blade of the hydraulic guillotine shears, stop and check. The maximum temperature of the fuel tank during operation is less than 60 degrees. If it exceeds 60 degrees, it should be shut down and rested.