High-carbon high-speed steel roll (HSS roll) is the hot-roll material with the shortest appearance, the fastest development, and the widest application prospect.

High-speed steel, also known as wind steel or front steel, means that it hardens even when cooled in the air when quenched and is sharp.

Our high-speed steel rolls are widely used in:

Finished frame (high-speed steel roll), front frame (high-speed steel roll), slitting frame (high-speed steel roll), pre-slitting frame (high-speed steel roll).

High-speed wire mill pre-finishing unit. Finishing Mill for Hot-rolled Narrow Strip Mill.

Finishing stands for spring flat steel mill and small section mills such as angle and channel steel.

It is complex alloy steel with carbide-forming elements such as tungsten, molybdenum, chromium, and vanadium. The total amount of alloy elements reaches about 10%~25%.

Advanced Manufacturing Processes and Implementation Standards

Product design → roll billet design → roll billet manufacturing → roll billet acceptance → annealing → rough turning → ultrasonic flaw detection → high temperature quenching → low temperature tempering → ultrasonic flaw detection → finishing  → ultrasonic flaw detection → roll body grinding → roll number → inspection → cleaning → packaging→ storage → shipments→  inspection → use and maintenance →exchanged → improvement of design.

It can be seen from the flow chart that roll manufacturing forms a closed-loop system from product design, production manufacturing, use and maintenance, and improvement design, and the quality of roll is constantly improving.

Standards for roll manufacturing and testing:

First, production must be organized according to product drawings and technical requirements agreed upon by both suppliers and consumers.

The main standards are:

GB/T 13313-2008 Roll Shore and Ribbon Hardness Test Method

GB/T 1503-2008 Cast Steel Rolls

Inspection Rules:

A. Inspect the dimensions and surface quality of each part individually;

B. Perform three ultrasonic flaw tests one by one;

C. Carry out hardness tests one by one;

D. The depth of the hardened layer on the roll body is determined by the manufacturing process.

Main Chemical Components