Our Company has independently developed the NC spray welder using oxyacetylene flame.Spray-welded

The machine is featured in stable performance, easy operation and very high productivity. We have produced more than 15,000 hot rolling run-out rolls and looper rolls in different sizes for domestic large iron & steel enterprises such as Angang, Shougang, Tanggang, Laigang and Shagang.         

The wrapper roll is a solid roll having the diameter of φ380 and the base metal of 50CrMo or 42CrMo generally. The customer required hardening the roll surface by spray welding but built-up welding was used instead as the domestic spray welding technology for solid rolls is immature. Our surface spray welding technology for thick-wall rolls and solid rolls determined through tests resolved the problem which has prevented the solid roll spray welding for a long period of time. We have mastered the spray welding technology for solid rolls and have produced many wrapper rolls at the world-advanced level for Laigang, Shougang and other enterprises to substitute the similar products overseas. 

Products: Spray-welded

1.Finished Conveying Rolls for Hot Rolling

 2.Shougang Conveying Rolls for Hot Rolling

 3.Finished Conveying Rolls for Hot Rolling

 4.Conveying Rolls for Hot Rolling

 5.Wrapper RollsSpray-welding

Spray-welded Conveying Rolls/Wrapper Rolls