Processing High-Speed Steel Rolls: Halnn CBN Insert BN-S20

At present, high speed steel rolls are called high-carbon high-speed steel composite rolls, in order to become an important part of the development of modern rolling production. At present, cast high-speed steel rolls were applied many filed such as section mill, pipe mill and so on.

Now, the alloying element apply and process arts of high speed steel rolls.
Firstly, the characters of high-speed steel
High-speed steel also called air hardening steel. Its alloying element can get above 10%~25%. its characters:

1. The carbide is high
2. Good thermal stability
3. easily to form oxidation film
4. good quenching degree
5. Excellent strength and toughness
6. good heat resistance
7. good wear resistance

Secondly, the processing arts of high-speed steel rolls 
The high-speed steel rolls belong to hot rolls. Its hardness generally keeps HRC45-62.The Processor should leave about 3 mm of allowance. Meanwhile, the allowance grinding can be left 0.2-0.5 mm in finishing after the finishing completed the requirements of drawings and surface roughness, such as high requirements of surface roughness.

Workpiece surface maybe can appear the casting defect( gas hole, Sand inclusion and hard point ),because of high-speed steel’s hardness is high and belongs to the casting forming. At present, PCBN inserts is the best inserts materials in this filed.

Halnn company, the first brand of superhard cutting inserts in China, is the leader of professional hard material processing inserts. Its cutting inserts scheme can complete a series of cutting and milling of various parts and components in the field. Now, the Halnn CBN inserts already widely apply in high hardness materials, high hardness workpiece after heat treatment and other hard cutting materials of components. Halnn adheres to the business philosophy of "not seeking Wide coverage, only doing high-quality and specialized",  Halnn CBN inserts are trusted by many customers.

The advantage of Halnn CBN inserts BN-S20 is that belongs to non-metallic adhesive CBN inserts, which improves the inserts toughness. Halnn CBN insert not only has high hardness, good wear resistance, but also has strong impact resistance. Especially when processing large high speed steel rolls, it meets the defects of irregular workpiece surface, sand inclusion, gas hole and so on. the surface of the workpiece needn’t to be grind . And a large surplus of high-speed steel rollers for rough turning ensures the requirements of drawings.

The Application of Turning High-Speed Steel Rolls Halnn CBN Inserts BN-S20

Processing effect: Halnn CBN inesrt compared with cemented carbide cutter (following)

Conclusion
With the improvement of rolling mill's requirement for roll performance, more and more high hardness, high quality and high performance rolls appear in the machine shop. In order to ensure the company's overall benefit, the machine shop is constantly looking for wear-resistant and impact-resistant inserts materials, which is a good opportunity for the tool industry. Making high-quality, high-efficiency, wear-resistant and impact-resistant inserts materials or inserts brands can not only occupy the inserts industry and benefit the company, but also promote the development of machinery manufacturing industry.