Rolling Hardening with the New Technology of Bending and Welding 45# Steel Plate

Specifications:

Customized products according to customers’ requirement with different diameters, heights and materials. 

Description:

After three years development and research, we achieved success in manufacturing the quenching rolls by adopting the new technology of bending and welding 45# steel plate. We have been granted state invention patent for our fire roll. The fire rolls have been widely applied in different lines of Bao Steel, and have also been accepted and sold to Mitsubishi, JFE, SPCO, CHUGAI RO, NSSC and POSCO, etc. It can well replace the imported forged fire rolls with the significant cut in the cost. Welding rod 507 is usually used to weld the steel plate 45#, but welding rod 507 can only guarantee the strength without hardness guarantee. The hardness can be guaranteed by adopting build-up welding, but the welding seam is prone to crack easily. We have tackled aforesaid problems by developing the new welding material. The hardness of the welding seam after the heat treatment can reach the same hardness level as the base metal with no bore and crack.

Applications:

Cold rolling line: tension roller, deflector roller, steering roller, correction roller, and measurement roller 

applied in galvanizing line, color galvanizing line and continuous annealing line 

Competitive Advantage:

1, Material using just 1/10 of the forging parts

2, Cost savings for the company drastically

3, No bore and crack

4, Guaranteed hardness and strength

5, Long serving life 10 times than the non-quenching roll

6, Welding seam without defects, the hardness of the welding seam and original material is the same