Paper Circular Knife are used in a variety of dividing lines, and we offer our customers customized solutions to handle different material strips. Use high-quality raw materials, if the outer diameter is less than 350mm, the parallelism, flatness and thickness tolerance can reach 0.002mm. We supply the major material factories with round-cutting round knives on the German and Japanese production lines. Both the mirrored surface and the matte surface can be customized.
Material: tool steel, die steel, carbide alloy
Hardness: HRC 53-76
Application: slitting line, shearing machine, paper cutting machine, printing machine etc.
What's the history of alloys?
The first people in the world to make alloys were the babylonians,
who began refining bronze (an alloy of copper and tin) 6,000 years ago.
China is also one of the earliest countries in the world to study and produce alloys.
The bronze (copper-tin alloy) technology was very developed in the shang dynasty (more than 3,000 years ago).
Around the 6th century BC (late spring and autumn period) the sword.