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Backup Roll Chock Liners- Backup roll outside chock liners protect the chock from wear and allow close clearances between the mill housing and backup roll chocks. This helps to maintain roll alignment and gaps, which both contribute to the ability of the mill to roll strip to a precise shape and gauge.
Our specialized knowledge and equipment allows us to inspect, grind, and perform all repairs on rolling mill and strip processing rolls, chock and journal repair. We are specialists in mill-related services, including rebuild, retrofit, and reconditioning of ANDRITZ Metals USA equipment or equipment of ANY other manufacture.
A hydraulic locking and loosening device ( 40 ) is set on the neck of a rolling-mill roll or back-up roll with a conical part ( 3 ) and a cylindrical part ( 4 ), and comprising an oil-film bearing ( 7, 8 ), a spacer ring ( 16 ), a thrust bearing ( 15 ), a thrust ring ( 17 ), and a threaded lock ring ( 18 ). The locking device ( 30 ) comprises a body ( 21 ) inserted at the centre in a ram ( 22 ...
Danieli Service chock reconditioning for flat product rolling mills The most cost-effective solution for work roll and back-up roll maintenance of hot and cold mills. Maintaining rolling mills is difficult, costly, and time-consuming, but the alternative may be …
CORTS® extensive know-how and experience based process optimization leads to the highest quality of mill refurbishment in the industry. Traditional, realiable and high quality products and services since 1835. CORTS® works – Precise and Efficient. Market leader in mill refurbishment and overhaul of entire steel production lines.
Rolling mill chocks are the maximum stressed bearing component in a manufactured item, and so are most liable to consistent the financial losses incurred as a result of chock failure will be far greater than the actual value of the chock.
The accuracy of this repair is critical to the operation of the chocks during steel mill rolling operations. As the chocks house large bearings and back up rolls, it is essential they are square and in line to the mill housing. Minor discrepancies in tolerancing would cause major problems in the mill and severely effect rolling operations.
A sendzimir mill is a mill with small diameter work rolls, each backed up by two rolls of larger diameter which are in turn jointly backed up by a cluster of three rolls. this mill configuration is often used for heightstrength and stainless steel. factbox 1 abb and rolling mills footnote 1 a pass is one deformation step consisting of the.
A rolling mill stand has upper and lower work rolls supported in chocks which include liner plates on their side faces for bearing against the side faces of the mill stand housing, with the side faces of the chocks being shaped so that the liner plates on both the upper and lower work roll chocks extend both above and below the pass line defined by the work rolls.
Fig 2 Typical 4-high stands showing various details. Pre-stressed mill stand – In a conventional rolling mill, the roller separating force which arises when the work piece bar is passed through the rolls is transferred through the backup rolls and their bearings to the mill house. In a pre-stressed mill stand, the two backup rolls are connected to each other by an …
BEARING_ CHOCKS : Jai Bharat Castings are front runner in Bearing Chocks for the steel re-rolling mills, roller flour mills and other various milling industries, bearing chock is the one of the most important part of modern rolling mills and they have the main influence on the tools of every rolling mill, bearing chocks are installed in between window of rolling mill stands …
Thermal Spray For Repairing Rolling Mill Chocks In The Nature Of Heat-Resistant Coatings For Industrial Applications Where Elevated Temperatures Occur: GS0371: Repair Or Maintenance Of Rolling Mill Chocks: PM0001: Roll Guard
50-55HSD / 46-52HRC. Prevent water from entering the bearing. Chock. Used for Hot Rolling Mill 1700 / Cold Rolling Mill. Steel 30 (Cast)+ Assembly Parts Steel 45 And Q235 / Steel 40 Cr (Forged) / Rolled Steel 17MnSi. Chock for Working Rolls Mill 1700 Stand 4-6 / Bottom Chock / Upper Chock / Top Chock of Backup Roll-Part of Reversing Cold Mill ...
Hot and cold rolling mills worldwide are under continuous pressure to increase output while maintaining, or even improving product quality. Doing so generally means adapting equipment for higher loads or re-configuring mill stands – an extremely costly proposition. In either case, the process control features involved result in tougher working conditions and …
ROLLING MILL CHOCK REPAIRS AND FLEET MANAGEMENT SMS group Inc. expertly maintains and repairs oil film bearing back up roll chocks as well as roller bearing chocks and work roll chocks for many of the major metals producers globally. We also build new chocks and chock components to OEM and customer specifications. Our products and services help ...
Continuous impact load results in permanent deformation of related fitting and mounting surfaces of the rolling mill, meanwhile, it is further deteriorated due to corrosion of the material, which results in inaccurate positioning of the working roll and the backup roll and excessive movement of the roll bearing chock in the rolling mill stand ...
Glunt Industries has a repair facility designed exclusively for chock rebuilding of backup and work roll chocks. Our chock service is available for chock fabrication of any size. Our chock services feature high-quality workmanship and our meticulous attention to detail are truly unparalleled across the entire industry and worldwide.
Rolling mill chock is one of the important parts of rolling mill which directly bears the working rolls or backup rolls load. The rolling force is transferred to the chock through the bearing, so whether the roll chock structure of the rolling mill is reasonable and whether the accuracy meets the requirements will have an important influence on ...
"Because we maintain our own steel mills, manage our customers' maintenance operations through MILLTEC(SM) and operate roll, chock and bearing repair facilities, we have become a trusted source of training for rolling-mill operators."
Repair / Rebuild D&R understands that when a machine breaks down or a part needs repairing, time is of the essence. To keep your business running smoothly, your company needs your machining needs handled quickly and efficiently.
rolling process. Traditionally this bearing is mounted on the operator side of the mill. For optimal control of the axial movement of the bearing and . chocks, thrust bearings may . be fitted to both ends of the roll. Chock-spreader bars, their locating pods, and the associated maintenance of these items are eliminated.
Rolling Mill Chocks 5. Rolling mill chocks with internal coolant supply, ready for assembly on cylinders in the rolling mill production line. Milled and bored. Material: Cast steel. Dimensions: 6 ½' x 10 ½', Hole Dia. 5'. For a production line in Finland.
Rolling Mill Chock Repair SMS Millcraft - Chock and bearing housing maintenance services SMS Millcraft expertly maintains and repairs rolling mill chocks and small bearing ... As part of our repair process, we completely disassemble and thoroughly... Read more Chock and Housing Maintenance - Timken
Steel Making and Processing Equipment Projects III. Major Projects In Iron & Steel Mills No Equipment / Specification Qty 1 Roll Chock (400 Ton) 120 Sets 2 Apron Assembly 5 Set 3 Segment Assembly / Beam Blank 7 Set 4 200 Ton Cold Shear 1 Set 5 Segment Assembly / 80 Ton 10 Set 6 200 Ton Laminated Hook Assembly 3 Set 7 Large Rolling Manipulator Straight …
United Gear Works roll reconditioning and repair services can include the removal of seized chocks and bearings, and more importantly, the weld repair of the roll journals. United Gear Works uses only the highest quality vacuum degassed clean steel, properly forged to meet the strictest ultrasonic testing standards in the roll industry.
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Each bearing chock was numbered and a record kept of which stands each was in during any rolling schedule. The computer records proved that four chocks were involved in all the bearing failures. This was surprising, but the cause still had to be proven. The four chocks were set aside and unused for a time to see what would happen.
Casters supply slabs to the new Primetals Technologies hot rolling mill In October 2021, Indian steel producer JSW Steel Ltd. started up two continuous slab casters at its Dolvi plant in Maharashtra. Together, the two two-strand casters have an initial annual capacity of around 4.5 million metric tons of slabs with future capacity potential for ...
Sling beam handling a bare mill roll Sling Beams Sling beams are the simplest solution to handle mill rolls. They allow a great deal of flexibility, allowing handling of a large variety rolls or roll and chock assembly configurations to be handled with a single unit.
Repair of rolling mill rolls . Fig. 1. Plan of placing the roll in grind- ing it assembled with the chock: 1) trans- verse shoe movement mechanism; 2) rear support prop; 3) shoe; 4 ...