单双轴工业撕碎机刀片概述
The industrial shredder blade is one of the most important accessories on the industrial metal shredder. The quality of the industrial shredder blades directly affects the waste processing cycle. Forged from high-quality alloy steel, an industrial shredding machine blade is suitable for shredding various waste metal materials, waste plastics, waste wood, waste rubber, etc. Customers can choose the appropriate blade according to the material to be shredded, and adjust the thickness and quantity of the blade to obtain the expected shredding particle size and output. So, what is needed to know about the type of shredder blades? Besides, what should users pay attention to if the blade needs to be repaired and replaced during long-term use?
What are the common types of industrial shredder blades?
常用的有单轴和双轴工业撕碎机。我们来看看这两种碎纸机的刀具。
Blade shapes
单轴工业撕碎机上的刀片形状为方形,四个侧面呈弧形,中间有螺纹孔。刀片至中孔的部分向内凹进,与刀架上的定刀配合使用。
双轴撕碎机刀片是爪刀,一般可分为3爪刀片、5爪、7爪、8爪撕碎机刀片、12爪撕碎机刀片等。这种撕碎机刀片应用广泛用于破碎废金属、废塑料、废橡胶、木材和其他大件废物。

Blade material
合理选择金属撕碎机刀片材质,不仅可以保证刀片和机器的使用寿命,还可以减少刀片更换频率,实现客户利益最大化。撕碎机刀片材质一般为9CrSi、Cr12MoV、SKD-11、6CrW2Si、42CrMo、D2、DC53、LD。 9CrSi为合金工具钢,硬度高,耐磨性好,适用于橡胶、纤维、纸张等软质废料。Cr12MoV、SKD-11为冷作模具钢,具有较强的耐磨性和抗冲击性,适合用于粉碎木材、废旧家具、硬塑料等。
单轴工业撕碎机刀片主要粉碎塑料、木材等软质材料。 它要求材料具有较高的淬火硬度和耐磨性。常见的选择有Cr12MoV、D2、DC53,一般硬度达到HRC60°左右。有些客户要求材料的硬度高于HRC62°,更耐磨、耐冲击,使撕碎机刀片有更长的使用寿命。

双轴撕碎机刀片主要材质为9CrSi、55SiCr、H13,主要针对一般使用寿命和常见物体,包括塑料瓶、木材、易拉罐、普通金属等。对于撕碎废旧金属材料或橡胶的要求,对于长期使用,建议选择D2、LD等。这些材料具有较强的淬透性和耐高磨蚀性材料的能力。对于撕碎类似汽车板、梁钢等高屈服强度材料的高强钢,需要选择H13Ni、HMB等耐冲击、坚韧的材料。
Industrial shredding machine knives sharpening skills
- 工业撕碎机刀片的磨损主要是钩子的磨损。修复的方法是用线切割机或磨刀机对刀刃内侧进行打磨,直至刀片的刀刃锋利为止。
- 注意沿着刀爪的弧线刨磨,而且一定要垂直于撕碎机刀片的平面,这样对原有刀体的损失才会最小。
- 维护金属撕碎机刀片时要小心。不要盲目仿效其他刀具的修磨方法,这样可能会影响整套刀具的寿命。严重时需更换整套刀具。
How to replace the metal shredder blades?
在更换工业撕碎机刀片时,需要遵循正确的操作步骤。 以下是一般操作流程。

撕碎机刀片更换流程
- First step
Disassemble the shredding box of the shredder, remove the sealing ring of the knife box, and remove the two complete knife shafts. Since the cutter shaft is heavy, it can be fastened with a sling and lifted out with a crane or a forklift.
- Second step
Find the other end of the cutter shaft with the pulley installed, and disassemble the collar on the shaft.
- Third step
After dismantling the collar, the cutter head can be taken apart one by one. When the combination of the blade and the shaft is strong, use a hammer first, and add a wood backing plate to the blade to hammer lightly. If it does not work, it is needed to use the puller to disassemble it, find the damaged blade and replace it, and then install it as it is.