Paper slitting knife

Common materials and applications

Alloy tool steel

Material characteristics:Alloy tool steel has multiple alloying elements added to it, such as chromium,

molybdenum, vanadium, etc., and it has good hardenability and wear resistance. After professional heat

treatment, its hardness can reach around HRC60-65. It can withstand a certain degree of impact load and

is not prone to edge chipping and edge curling phenomena during the processes of slitting paper, paper

tubes, and fabrics. Its cost is relatively moderate, and it has a high cost-performance ratio, making its

suitable for large-scale production and application.

Application:For general writing paper, office paper, paper tubes, fabrics, etc., the upper and lower slitting

knives made of alloy tool steel are usually used. The slitting requirements for these materials are relatively

low, and the alloy tool steel slitting knives can meet the requirements for production efficiency and quality,

which can reduce the production cost.

High-speed steel

Material characteristics:It can meet the requirements of high-speed cutting and automated

slitting equipment, maintain relatively high hardness and cutting performanceeven at high

temperatures, reduce the wear and replacement frequency of cutting tools,and improve

production efficiency.

Application:The upper and lower slitting knives made of high-speed steel are often used in

situations where high requirements are placed on slitting accuracy and speed, such as in

the printing industry for slitting printed paper, as well as for paper tubes, non-woven fabrics

plastic films, etc. The high-speed steel paper slitting knives can maintain good edge

sharpness and dimensional accuracy during the high-speed slitting process, ensuring that

the edges of the slit paper are neat and smooth, thus meeting the quality requirements

of high-precision slitting.

Cemented carbide

Material characteristics:It is mainly composed of hard phases such as tungsten carbide and

titanium carbide, and bonding phases such as cobalt and nickel. It has extremely high hardness,

which can reach HRA90-93 (equivalent to HRC74-81), and has excellent wear resistance, corrosion

resistance and high-temperature resistance. However, it has poor toughness, high brittleness,

weak ability to withstand impact loads, and is expensive.

Application:For special papers with coatings, films, or those that are hard and wear-resistant,

the upper and lower slitting knives made of cemented carbide are the first choice. Their high

hardness and wear resistance can effectively resist wear and ensure the slitting quality and the

service life of the knives.

Common specifications

The process and precautions for customizing other specifications

During the customization process, it is of vital importance to accurately measure whether the

slitting machine has any openings (if applicable) and the width of the cutter shaft. This can

ensure that the customized components fit perfectly, enabling seamless operation and

preventing potential malfunctions or inefficiencies that may be caused by improper fitting of the

components.

Our advantages

From material selection, production to quality inspection, we strictly follow the Standard Operating Procedure

(SOP). In the material selection process, we have in-depth cooperation with top suppliers in the industry and

carefully select high-purity and high-performance raw materials such as high-quality steel and cemented

carbide to ensure that every industrial blade has excellent hardness, wear resistance, and red hardness from

the source.During the production process, we use numerically controlled precision machining equipment

and cutting edge manufacturing processes, implementing precision requirements throughout every single

procedure. Whether it is the edge grinding of the blade, heat treatment strengthening, or the shaping of the

overall structure, we strive for perfection.

In the quality inspection stage, we adopt a multi-dimensional inspection system, covering dozens of strict

indicators such as hardness testing, sharpness inspection, wear resistance simulation, and dimensional

accuracy calibration.Through the dual verification of professional instruments and manual rechecking, we

prevent any defective products from entering the market.