Cold forming

Due to the low working temperature, there is no surface oxidation of the rolled material, which is why no post-processing of the surface is usually necessary for cold-rolled strips. This requires specialized cold work steel, which you will find in our range. This steel is used in classic and special areas of the cold rolling industry, such as auxiliary rolls and profile bending rolls.

We produce work rolls for duo stands, quarto and sexto stands as well as multi-roll stands for the cold forming of steel, non-ferrous metal strips and foils. We manufacture cold rolls from blanks to ready-to-install products - all from a single source. This includes the entire process chain, from steel production, hot forming and heat treatment through to mechanical processing. By using special melting metallurgical processes such as electro-slag remelting (ESR) or arc-vacuum remelting (LBV), high demands on the surface quality, purity and isotropy of the material are also met.

The forging press and long forging machines enable the production of near-net-shape, contoured roll blanks. These are supplied in various heat treatment states. Hardening units and deep furnaces are available for surface hardening and through-hardening, while modern machining centers are used for finishing. Extensive testing ensures consistently high delivery quality.

We offer a wide range of grades and special steels for cold rolling, profile bending rolls, straightening rolls and straightening rollers, among others:

• 2-3% Cr Steels: These steels are characterized by a balanced combination of hardness, hardening depth, and toughness. They are primarily used for surface-hardened rolls, for example, our Cryodur® 2327.
• 5% Cr Steels: In comparison to the 2-3% Cr steels, this steel exhibits higher compressive strength and can be either through-hardened or case-hardened, as seen in our Cryodur® 2362.
• 7-12% Cr Steels: These steels are predominantly utilized for through-hardened rolls, offering excellent toughness and wear resistance according to specific requirements.

The Swiss Steel Group offers a comprehensive range of steel grades for embossing, pressing, and bending tools, including alloyed high-performance steels with special properties. These steels are characterized by high toughness and wear resistance. Here are some steel grades from the product range:

• Cryodur® 2357: An air-hardening cold work steel with high toughness and strength, particularly suitable for tabletting tools.
• Cryodur® 2550: An impact-resistant, tungsten-alloyed cold work steel with high toughness and hardenability, used for tabletting and cold extrusion punches, as well as embossing tools.
• Cryodur® 2767: A nickel-alloyed cold work steel with high hardenability, toughness, and polishability. Applications include solid embossing and bending tools, as well as cutlery punches.
• Cryodur® 2842: A standard steel for less heavily stressed embossing stamps with flat engravings.

• Rapidur® 3343: A universal high-speed steel for cold massive forming and deep drawing tools, characterized by high toughness and wear resistance.

When bending workpieces, various methods are applied, including bending. Here, too, the choice of the appropriate material for the bending tools is crucial. The high-quality cold work steel range for guides and bending strips includes, among others, our Formadur® 2312, Cryodur® 2842, and Cryodur® 2067. Depending on the application, properties such as hardness, toughness, and wear resistance are taken into account.