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High-Performance Rotary Shear Blades for Precision Metal Cutting

The circular metal slitter blade is mainly used in slitting lines to uncoil metal coils into metal strips, which can slit silicon steel sheets, hot and cold rolled stainless steel coils, galvanized iron, hot and cold rolled strips, aluminum coils, copper coils, rubber tires, etc.

    Material introduction

    Raw materials are both the most fundamental and most important link in blade production. The circular metal slitter blades are mainly made of 6CrW2Si, 1.2379 (D2), LD (7CrSiMnMoV) , 1.2344(H13), HMY, 1.3343(SKH-51, M2), imported materials etc. Senda has developed a new type of material HMY processed by special heat treatment, featuring higher abrasion resistance and good ductility. Thus the problems that blade needs to sharpen frequently and its edge easily breaks due to poor abrasion resistance, which is caused by high strength and high thickness slitting materials, are solved.
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    Production Parameters

    Outer diameter(mm)

    Thickness Tolerance(mm)

    Parallelism(mm)

    Flatness per Thickness (mm)

    Surface Finishes Ra(µm)

     

     

     

    ≤1

    1-2

    2-5

    >5

    standard

    Ra

    ≤250

    ±0.001

    0.002

    0.02

    0.05

    0.002

    0.02

    0.2

    0.1

    ≤340

    ±0.001

    0.002

    0.03

    0.01

    0.005

    0.02

    0.2

    0.1

    ≤420

    ±0.001

    0.002

    0.04

    0.02

    0.01

    0.002

    0.2

    0.1

    ≤550

    ±0.003

    0.002

     

     

    0.02

    0.005

    0.2

    01

    ≤600

    ±0.005

    0.005

     

     

     

    0.01

    0.2

     

    Type of material o be cut

    Tensile strength/MPa

    Gap as a percentage of thickness

    Soft aluminum, copper, brass

    ≤100

    3-5

    Soft steel and copper alloys, duralumin

    ≤240

    10

    Medium hard steel, soft stainless steel

    ≥420-620

    12-14

    Stainless steel, high alloy steel

    ≥700-1310

    14-25

    Advantages

    1. Handle heavy shearing force and Outstanding dimensional accuracy.

    2. Imported grinding and polishing machines ensure blade precision of ±0.001mm.

    3. Clean cutting edges thanks to the low co-efficient of friction

    4.New material HMY, perfectly shear 3-16mm high strength steel coils at the same time.

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    Product Features

    The circular metal slitter blade is the most important link in slitter tool apron. The main problems customers encounter during use are the poor abrasion and edge crack in blade. Senda slitter blades have the following features, therefore reducing the blade sharpening frequency.

    1. The blades of Senda are made of high quality raw materials and manufactured by forging and advanced vacuum heat treatment technology, which have high hardness and stability, and the abrasion resistance is remarkably improved.

    2. The blade surface is processed with precision surface grinder and special grinding technology. After strict quality test, all finished products are guaranteed with a flatness of within 0.0003mm, a thickness tolerance of ±0.001mm, and a concentricity of within 0.02.

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