Solving the Oil Leakage Issue in Universal Rolling Mills:
1. Sealing at the junction area: Use 601 and 602 rubber coatings on the junction surface to address oil leakage issues.
2. At the end of the bearing, secure a screw opposite to the direction of rotation on the oil ring positioned between the bearing and the end cap. Additionally, install an integral sealing ring onto the end cap and attach an external housing around the shaft, ensuring it is both sealed and dustproof. For maintenance purposes, apply sealant directly onto the sealing ring. Typically, either of these methods can effectively resolve oil leakage issues. Beyond this scenario, however, the universal rolling mill will require repair.
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Universal Rolling Mill: What are the tips for using a universal rolling mill?
Release date:
2020-02-01
Solving the Oil-Leakage Issue in Universal Rolling Mills: 1. For sealing at the joint surfaces, apply 601 and 602 rubber coatings to the mating surfaces of the housing sections to effectively address oil leaks. 2. At the bearing ends, install screws opposite to the direction of rotation on the oil rings positioned between the bearings and end caps. Additionally, add a comprehensive sealing ring to the end cap itself and fit an external housing around the shaft—this design ensures both a tight seal and protection against dust. Maintenance can be further enhanced by applying sealant to the sealing rings. Typically, either of these methods is sufficient to resolve oil-leakage problems. However, if neither approach works, the universal rolling mill will require professional repair.
Universal Rolling Mill Workers will perform manual measurements, such as removing small steel coils from the coil trolley, pressing the strip head firmly into place using a pressure roller, and then carefully inserting the steel head into the reel. The tubes are moved from the storage cabinet directly to the steel coil cart. Most of the rolling oil is used for cooling during the rolling process; therefore, a straightening machine with a flat head is employed to align the strip ends before the coiler returns the material to its standby position. Operators must rely on manual measurement procedures throughout this process.
Due to the leading-edge curl, after several passes, the detection equipment was positioned at the exit of the tension coiler. The coil expands to reduce speed while simultaneously increasing torque. The coil carriage then loads the coil onto the uncoiler. On the expanded reel, the actual strip steel position—measured relative to the centerline—is recorded. As the strip enters from the feeding station, the coiler is used for both winding and unwinding operations. Both devices are coordinated to ensure precise control of the coil width. Meanwhile, the working rolls of the mill, through which the steel previously passed, have been removed and relocated to the threading line. Finally, the uncoiler flips the steel coil over, and the press roll secures the strip’s leading edge, while a sleeve-loading device is installed beneath the coil saddle to facilitate seamless handling.
The distance between the measuring device and the top surface of the steel coil is measured. After entering the pinch rolls, the paper rolls onto the unwinding drum of the uncoiler, with the rolling process synchronized precisely with the start of the steel coil rolling. The structure is fabricated from welded steel profiles. The folding plates of the rolling machine are connected to the rollers. If the steel coil becomes misaligned, the operator manually adjusts the rolling machine by moving it forward, while simultaneously shutting down the drive motor. The storage station can hold approximately 3 sleeves at a time.
Latest news
How to adjust the axial assembly of the rolling mill?
First is the mill’s entire radial adjustment mechanism. The key lies in utilizing a linkage formed by the connection between the sleeve and the universal coupling, a setup more commonly employed for external radial adjustments. It is precisely for this reason that both the lower compression nut of the bending pad and the compression nut itself are connected to standard screws and bearing housings.
2022-07-01
Introduction to Cryogenic Rolling
Low-temperature rolling involves heating steel billets to temperatures lower than conventional heating levels, followed by rolling performed at these reduced temperatures—more precisely referred to as medium-temperature rolling. The primary goal is to significantly cut down on fuel consumption required for billet heating and minimize metal burn-off during the process.
2022-01-18
Rolling Mill: What precautions should be taken when installing a small rolling mill?
Strict requirements apply when installing small rolling mills, as they do for rolling equipment in general—but there are still numerous differences between small mills and other types of machinery, making careful attention essential during installation. Due to the complexity of the electrical control systems in small rolling mills, which typically include one or more working stands along with their drive mechanisms, rolling lines often feature extended process layouts. Additionally, precise height differences between equipment and the central line are critical during setup.
2021-12-01
Steel Rolling Mill: The Purpose of a Steel Rolling Mill
There are two main types of steel rolling mills: cold rolling and hot rolling. Hot rolling is primarily used for roughing out the initial billets, while also producing certain types of structural steel. Notable models of hot-rolling mills include the 630–650 series, the 500–550 series, and the 2300 mid-plate mill. On the other hand, cold rolling is mainly employed for finishing and producing a wide variety of rolled strip products. Representative cold-rolled steel products include thin metal-coated sheets (such as tinplate and galvanized sheets), deep-drawing steel sheets (most commonly used in automotive applications), electrical silicon steel sheets, stainless steel, and coated steel sheets. Currently, advancements in both equipment technology and control systems are driving cold-rolling mills toward even higher levels of precision and efficiency. Examples of modern cold-rolling mill models include the 1400mm NKW, the 1250mm HC single-stand reversible mill, and the 1150mm twenty-roll cold-rolling mill.
2021-11-01
The Structure of a Short-Stroke Rolling Mill
With the development of the steel industry and rising customer demands for higher steel quality, the requirements for rolling mills are becoming increasingly stringent. Short-stress rolling mills stand out for their high rigidity, superior product precision, lightweight design, and ease of operation—particularly thanks to their innovative "on-line rapid mill changeover" feature, which has positioned them as a leading choice in steel rolling operations, especially in domestic bar and wire rod plants. Short-stress line rolling mills can broadly be categorized into frame-type and non-frame-type designs.
2021-10-08
Summary of the causes of heat generation in various parts of the steel rolling mill production line!
On the steel rolling mill production line, many equipment units—such as flying shears, pinch rolls, and low-voltage compensators—have adopted asynchronous variable-frequency drive systems for their transmission mechanisms. Once the magnetic field reaches saturation, the iron core becomes saturated, causing the no-load current to rise and, consequently, increasing the motor's heat generation. As a result, during summer months, companies often have to halt production for several hours each day just to allow the motors to cool down. This significantly disrupts the rolling mill’s output and inadvertently leads to substantial production cost losses. When the rolling mill processes steel, the motor speed naturally decreases, causing the stator current to surge by 10–22% above its rated value. Frequent overloading not only intensifies motor heating and overheating but can also, in some cases, lead to excessive resistance torque—potentially even stalling or burning out the motor altogether.
2021-09-01
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