One stop service for steel industry

The role of backup rollings

[vc_row][vc_column][vc_column_text]

Backup rolls are generally used in tension levelers, levelers, rolling mills and other equipment. Since the work roll is relatively slender, it cannot bear the radial load generated when straightening the shape of the sheet and rolling the sheet. At this time, it is necessary to arrange a backup roll under the work roll or the intermediate roll to bear the radial load, which acts as a pair of work rolls. , The role of the middle roller is similar to lifting. If the circumference of the backup roll is large and the concentricity is not good, it will directly affect the work roll, resulting in vibration lines and scratches on the plate shape after tension and straightening. Generally, the circular runout of the backup roller should be controlled within 0.01mm. If the runout is too large, it is a non-standard product and should not be used.

Due to the use environment of the backup roll, it must bear a large radial force, so it is the most critical mechanical part of the equipment except the work roll. Many equipment manufacturers do not understand the structure of the backup roller, and use ball bearings and bushing parts to assemble the backup roller by themselves. This kind of backup roller is extremely insufferable, and the poor accuracy affects the use.

The real backup roll should be composed of mandrel, bearing sleeve, needle roller, seals, fasteners, heat-resistant extreme pressure grease, and the heat treatment hardness, material selection, clearance fit, assembly and debugging of each part have specifications and requirements . In the tension leveling line below 450 m/min, the service life of the backup roller should be between half a year and two years (depending on the initial plate type and use environment). If the backup roller is broken in two or three months, please Inform the supplier in time, it is basically a quality problem or improper use.[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column][vc_btn title=”About LMM GROUP” link=”url:https%3A%2F%2Fwww.lmmgroupcn.com%2Fabout-lmm%2F|target:_blank”][vc_column_text css=”.vc_custom_1649296177864{margin-top: 50px !important;}”]friendship Link:

LMM Totai Refractory, LMM Mill ROLLS, LMM CCM, LMM Mechanical Equipment, Intelligent industry, STEEL Metallurgy Industry[/vc_column_text][/vc_column][/vc_row]

Facebook
Twitter
LinkedIn
Reddit

As professional one-stop solution provider, LIAONING MINERAL & METALLURGY GROUP CO., LTD(LMM GROUP) Established in 2007, and focus on engineering research & design, production & delivery, technology transfer, installation & commissioning, construction & building, operation & management for iron, steel & metallurgical industries globally. 

Our product  have been supplied to world’s top steel manufacturer Arcelormittal, TATA Steel, EZZ steel etc. We do OEM for Concast and Danieli for a long time.

LMM Main product series

Core technology products:

  • magnesia carbon brick
  • slide gate plate
  • graphite electrode

Core technology products:

  • Hss roller
  • cast steel rolls
  • tungten carbide ring roller

Core technology products:

  • copper mould tube
  • copper mould plate
  • assembly & cooling jackts

Need For Some Help ?

Professional engineers provide solutions and technical drawings

phone

86(411) 84174804

mail

lmme-business@lmmgroup.com.cn

Special product design, please send specific data and drawings to our mailbox or form.

Get A Free Consultation
And Estimate