How To Choose Blades For Shredders For Different Materials
Jul 05, 2024
The shredder targets different material properties and has many types, so the quality requirements for the blades are also higher. The most commonly used alloy materials in the market are H13, 55SiCr, etc., which are also commonly used by various manufacturers because of their wear resistance, durability and good impact resistance. However, in the face of different materials, a more suitable material should also be selected. This can ensure production efficiency and long-term use without cracking or blunting.
The main components of the knife group are the middle bearing and blade, which is also the key to the absolute shredding effect. It can also be said that the quality of the blade and bearing determines the quality and efficiency of the shredded material. The quality of the blade is determined by its material, so what material is used to make the shredder blade is also determined by the material of the product to be shredded.
How to choose the material of the shredder knife?
1. Selection of wood shredder knives: Generally, the knives selected for wood are of moderate hardness and good toughness. Because the hardness of the wood itself is not high, the high-strength blade shredding effect is not good, and usually requires knives with good toughness. For example, for blades made of spring steel, to achieve the effect of spring steel being soft but hard, it is necessary to control the temperature in the heat treatment process and ensure the hardness without affecting its performance.
Commonly used wood shredders are made of Cr12MoV, H13, and SKD-11, among which 9CrSi is an alloy tool steel. This type of material not only has suitable hardness, but also has high wear resistance and impact resistance, and has better shredding effect. However, due to its high brittleness, it can only handle some plastic PVC and low-hardness materials.
2. For some high-hardness materials such as metal materials and waste furniture, cold working die steel such as Cr12MoV, H13, SKD-11 and other materials can be used. Compared with the above materials, it has higher wear resistance and hardness, and can handle materials with higher hardness.
3. Plastics are mostly used in single-axis shredders, and the cutters should be selected from materials with high quenching hardness and high toughness, such as Cr12MoV, D2, DC53, etc. This type of cutter is a high-strength wear-resistant steel with better wear resistance.
In addition to the material difference, the processing methods of different tool materials are also different. Cold working die steel and hot working die steel are commonly used. In addition, the cutting gap between the structures of different tools, the angle of the tools, and the surface roughness of the tool blades are also different. The heat treatment of the tool, the hardness of the blade, the uniformity of the hardness of the same surface, and the tool rotation speed together determine the service life and quality of the tool.
