Universal mill vertical roll
Usage:this roll is used on the universal mill as vertical roll
Roll ring diameter: max can be 1600mm
Service:besides the production,we also offer the roll ring installation service as the requirement from customer in our company.
Universal mill roll assembling in our workshop
Package for universal mill vertical roll
Roll material
Material | Function | |
HiNiCr infinite chilled composite cast iron
| Hot rolling strip steel mill | Finishing rolling forepart、back end work roll、leveling rolling mill work roll、leveling rolling mill back up roll |
Steckel Mill | Rough rolling、finish rolling work roll | |
Thin plate billet continuous casting tandem mill | Finish rolling midpiece、back end work roll | |
Wide&thick plate Medium plate mill | Rough rolling、finish rolling work roll | |
Section&wire& re-bar mill | Rough rolling、finish rolling work roll | |
HiCr cast iron roll | Hot rolling strip steel mill | Vertical roll、rough rolling work roll、finish rolling forepart work roll、leveling rolling mill work roll |
Steckel Mill | Vertical roll、rough rolling work roll | |
Thin plate billet continuous casting tandem mill | Vertical roll、rough rolling forepart、back end work roll、finish rolling forepart、midpiece work roll | |
Wide&thick plate Medium plate mill | Rough rolling work roll、finish rolling work roll | |
Large universal section steel and rail beams mill | Vertical roll collar | |
Section&wire& re-bar mill | Rough rolling work roll | |
HiCr steel roll | Hot rolling strip steel tandem rolling | rough rolling work roll |
thin plate billet continuous casting tandem mill | Rough rolling forepart、finish rolling forepart work roll | |
Semi-steel Alloy cast steel roll | Hot rolling strip steel tandem rolling Semi-tandem mill | Vertical roll、rough rolling work roll |
Steckel mill | Vertical roll | |
Sheet billet continuous casting tandem mill | Vertical roll | |
Wide&thick plate Medium plate mill | Rough rolling work roll | |
Large universal section steel and rail beam mill | cogging roll、horizontal roll collar、vertical roll collar、edge roll | |
Section&wire&re-bar mill | rough rolling work roll、finish rolling work roll | |
Semi-high speed steel High speed steel | hot rolling strip steel tandem rolling mill | Rough rolling work roll、rough rolling forepart、back end work roll |
thin plate billet continuous casting tandem mill | rough rolling back end、finish rolling forepart、midpiece work roll | |
Back up roll | Hot rolling strip steel tandem rolling mill | rough、finish rolling back up roll Leveling rolling mill back up roll |
Steckel mill | Back up roll | |
Thin plate billet continuous casting tandem mill | rough、finish rolling back up roll | |
Wide&thick plate Medium plate mill | Rough rolling、finish rolling back up roll | |
Alloy nodular cast iron roll Nodular composion cast iron roll | Large universal section steel&rail bean mill | Cogging roll、rough rolling、finish rolling work roll |
Section&wire&re-bar mill | rough、finish rolling back up roll | |
For rolls material,here we have steel rolls also with iron rolls. For steel rolls,we have material high chromium steel roll,high speed steel roll,graphite steel roll,ssemisteel roll and the other material which is based on the requirement from the customers. For iron rolls,we have chilled cast iron roll,infinite chilled cast iron roll,spheroidalgraphite roll,high chromium cat iron roll and the others which is based on the requirement from custoemrs.
1. Preheat.Before the running of the rolls,we make the preheat.In this case,we can shorten the temperature gradient on rolls surface and inner to reduce the stress. 2. Cooling of rolls:As the rolls with high alloy content for hot strip mill finishing work mill stand,the thermal conductivity of the rolls is not good that the water cooling is important for the rolls.General speaking,the temperature on rolls surface for roughing rolls should be with 70℃ meanwhile finishing rolls with 60℃.The rolling mill both for domestic and international,the average water consume for every cm rolls length has added from 3m³/cm.h to 5m³/cm.h.The adding for cooling water is not only reducing the crack of the rolls but also offering the better usage condition for choosing the more wear resistance material. 3. Grinding of rolls:Grinding is the most efficient way for eliminating the roll crack,preventing the rolls broken and spalling.After the roll has off the mill,the inspection report record is necessary.The grinding area should be added to eliminate all the crack.To eliminate the crack absolutely,NDT should be cooperated in,as magnetic particle inspection and ultrasonic inspection. 4) Scientific design and material selection:If the concavity formed in the middle of the roll ,the stress will focus on the two side of rolls or on the back up roll. In serious cases, the shoulder of the work roll will fall off, and even the shoulder of the support roll will fall off.To avoid this accident,we should consider the reasonable design of the rolls. 5) Choose the reasonable back up type:The reasonable roll type design can efficiency prevent stress concentration.Usually to say,we will make the compound chamfer. 6) Accident settle:we should immediately stop the water cooling when card steel,heaped steel,laminated steel appears.We should raise the rolls and make it leave the hot strip and let it cool.Before it enters into the mill,we should reduce the defect absolutely.
1. we will check what type of the problem is and how could it happen? 2. If it is our full duty,we will replace the new piece for our customer meanwhile we will pay the full duty for the transportation and the other fees caused by re-import. 3. We will settle the quality problem until the satisfy of the customers.
1. before the purchasing order,we will give the professional proposal for what kind of material is better for your choise. 2. when you have bought the product,we will give the professional advise on how to improve the using life meanwhile how to make the maintain of the rolls. 3. when you have used it and problem appears,we will give the advise on how to reduce the accident case during the production 4. Any question which is revelant to the products,we will make the answer within 2 days with professional advise.
