Materials and Cutting Tools
At this point, we would like to focus on metallurgy (material science), as metallurgical processes play a crucial role in the manufacture of cutting tools, especially machine knives and industrial knives. Metallurgy is a very comprehensive field, so we will focus only on materials relevant to the production of cutting tools, such as machine knives, circular knives, and punching tools.
Carbon steel Ck101 (C100S):
Carbon steel is a high-carbon (approx. 1%) spring steel that can be used particularly for the production of industrial blades, cutting knives, and circular blades. A simple hardening process can achieve very high hardnesses of 60-62 HRC. Although grinding can achieve high sharpness and edge retention, its wear resistance is lower than that of tool steels.
Tool steel 1.2510 (1.2842):
Material 1.2510 is a widely used cold-work steel, particularly popular for the production of scissor blades. Its high hardness and edge retention make it ideal for this application. Material 1.2510 is also useful in the production of punching tools, such as scissor blades, punching knives, and punching dies. However, it should be noted that its polishability is limited, and the varying cross-sectional hardness must be taken into account.
Tool steel 1.2436:
1.2436 is a chromium-alloyed cold-work steel characterized by its remarkable wear resistance and excellent cutting properties. These properties make 1.2436 particularly suitable for the production of machine knives, industrial knives, cutting knives, and punching tools. The toughness and polishability of this steel are rated as average.
Material 1.2379 is a chromium-alloyed high-performance steel that is primarily used in the manufacture of industrial knives and punching tools, such as punching knives and punching dies. With a high chromium content of 12-13%, this material is rust-resistant. After hardening, material 1.2379 exhibits low deviations in dimensional accuracy and through-hardening, making it ideal for the production of long shear blades. The hardening process is crucial in the manufacture of shear blades, as it influences further processing. The production of circular and round blades from 1.2379 is also advantageous because distortion after hardening is low and grinding results are optimal thanks to its toughness. Due to its excellent erodibility and good polishing properties, 1.2379 is particularly indispensable for punching tools. This makes it ideal for the entire range of cutting knives and precision parts requiring high hardness and wear resistance.
High-speed steel 1.3343 (HSS):
1.3343 is a high-quality high-speed steel specifically used for the production of cutting tools where high wear resistance is required. This high-speed steel is essential in the manufacture of milling tools, turning tools, and sawing tools. 1.3343 is also particularly used in the production of machine knives, including circular and round knives. As a proven material for cutting tools, this steel offers excellent performance and durability.
Chrome steel 1.4034:
1.4034 is a corrosion-resistant chrome steel that is particularly characterized by its hardenability. 1.4034 is frequently used in the manufacture of industrial knives for the food industry and medical technology. The corrosion resistance of this steel can be further improved through grinding. Compared to 1.2379, it achieves a lower hardness of approximately 54-55 HRC. Nevertheless, the cutting properties of the cutting knives remain above average.
Chromium steel 1.4112:
The material 1.4112 is a corrosion-resistant, martensitic chromium steel characterized by its high achievable hardness. The chromium content is approximately 18%. Despite this, a hardness of up to 58 HRC can be achieved, making it comparable to industrial knife tool steels. In addition to 1.4034, 1.4112 is also ideal for the production of circular and circular knives used in the food industry and medical technology. When hardened, this material also offers corrosion protection against chemical substances, which further underlines its suitability for cutting knives in certain industries.
Hard metal (carbide):
Hard metals are sintered metals consisting of a composite of hard materials and a binder. These hard metal blanks, consisting primarily of tungsten and a small amount of cobalt, are primarily used to manufacture cutting tools such as milling cutters and turning tools. In the field of machine knives, special hard metal knives are used for certain applications. These knives are either made of hard metal or entirely of hard metal, such as circular knives. Since machining is only possible through erosion and grinding, the production of hard metal cutting tools requires greater effort.
NORDPRÄZISION Werkzeugfabrik GmbH manufactures cutting tools, machine knives and precision parts according to drawings
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