This page lists 86 typical spare and wear parts from steel industry plants, sorted into 8 groups. Each card briefly explains what the part is and what it does.
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Parts by group
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AI-generated illustrationMelting and ladle
Electric arc furnace
Furnace that melts scrap with an electric arc between graphite electrodes and the charge.
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AI-generated illustrationMelting and ladle
Graphite electrode
Consumable of the arc furnace that conducts current into the furnace and burns off in the process.
AI-generated illustrationMelting and ladle
Electrode arm
Water-cooled arm that holds, clamps and adjusts the height of the electrode.
AI-generated illustrationMelting and ladle
Electrode clamp
Clamp jaw on the arm that holds the electrode firmly and transfers the current.
AI-generated illustrationMelting and ladle
Water-cooled wall panel
Tube panel of the furnace wall that removes heat via cooling water in place of refractory.
AI-generated illustrationMelting and ladle
Ladle
Refractory-lined vessel that carries liquid steel from the furnace to the caster.
AI-generated illustrationMelting and ladle
Slide gate
Shut-off at the ladle bottom used to open and meter the steel outflow.
AI-generated illustrationMelting and ladle
Porous plug
Gas-permeable refractory brick in the ladle bottom through which argon is blown for stirring.
AI-generated illustrationMelting and ladle
Refractory brick
Heat-resistant brick for lining furnace, ladle and tundish; a wear part.
AI-generated illustrationMelting and ladle
Oxygen lance
Pipe through which oxygen or carbon is injected into the melt.
AI-generated illustrationMelting and ladle
Immersion probe
Single-use measuring head for temperature measurement and sampling in the melt.
AI-generated illustrationContinuous casting
Mould
Water-cooled copper tube or plates in which the steel first forms a solid shell.
AI-generated illustrationContinuous casting
Mould tube
Copper-alloy insert of the billet or bloom mould; replaced when worn.
AI-generated illustrationContinuous casting
Mould oscillator
Device that moves the mould up and down so the strand shell does not stick.
AI-generated illustrationContinuous casting
Tundish
Intermediate vessel that receives steel from the ladle and distributes it to the strands.
AI-generated illustrationContinuous casting
Submerged entry nozzle
Refractory tube that guides steel into the mould below the meniscus.
AI-generated illustrationContinuous casting
Stopper rod
Refractory rod in the tundish that opens the nozzle and controls the flow.
AI-generated illustrationContinuous casting
Strand guide roll
Roll that supports and guides the still soft strand; internally water-cooled.
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AI-generated illustrationContinuous casting
Secondary cooling spray nozzle
Nozzle that cools the strand below the mould with water or an air-water mist.
AI-generated illustrationContinuous casting
Withdrawal and straightening roll
Driven roll that withdraws the strand and straightens it out of the arc.
AI-generated illustrationContinuous casting
Dummy bar
Chain or bar that closes the mould bottom at start of casting and pulls the strand.
AI-generated illustrationContinuous casting
Torch cutting machine
Machine that cuts the strand to length in-line with torches.
AI-generated illustrationContinuous casting
Cutting torch
Torch with cutting nozzle on the strand cutting machine; nozzles are wear parts.
AI-generated illustrationRolling mill
Rolling stand
Stand with rolls, bearings and screw-down in which the stock is formed.
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AI-generated illustrationRolling mill
Work roll
Roll in direct contact with the stock; reground and replaced.
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AI-generated illustrationRolling mill
Grooved roll
Roll with turned grooves that form sections, bars or rod.
AI-generated illustrationRolling mill
Roll ring
Carbide or cast ring for rod and bar mills; changed on the shaft.
AI-generated illustrationRolling mill
Chock
Bearing housing in which the roll neck runs and which is inserted into the stand.
AI-generated illustrationRolling mill
Roll neck bearing
Multi-row tapered or cylindrical roller bearing for very high rolling forces.
AI-generated illustrationRolling mill
Oil film bearing
Plain bearing for back-up rolls in which an oil film carries the load.
AI-generated illustrationRolling mill
Screw-down spindle
Spindle with nut that sets the roll gap; hydraulic on newer stands.
AI-generated illustrationRolling mill
Roller guide
Guide before or after the groove that leads the stock accurately into the rolls.
AI-generated illustrationRolling mill
Guide roller
Small hardened roller in the roller guide; a frequently replaced wear part.
AI-generated illustrationRolling mill
Looper
Device between stands that forms a loop to avoid tension in the stock.
AI-generated illustrationRolling mill
Descaler
High-pressure water nozzles that remove scale from the surface before rolling.
AI-generated illustrationRolling mill
Roll cooling nozzle
Nozzle that cools the rolls and reduces cracking and wear.
AI-generated illustrationRolling mill
Crop and dividing shear
Shear that crops head and tail of the stock or divides it to length.
AI-generated illustration
AI-generated illustrationDrive train
Universal joint shaft
Shaft with joints that transmits torque from the gearbox to the rolls.
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AI-generated illustrationDrive train
Gear spindle
Spindle with crowned teeth as an alternative to the joint shaft for roll drives.
AI-generated illustrationDrive train
Pinion stand
Gearbox that splits the torque between top and bottom roll.
AI-generated illustrationDrive train
Mill gearbox
Heavy-duty gearbox between motor and stand for high torques and shocks.
AI-generated illustrationDrive train
Gear coupling
Torsionally rigid coupling that connects shafts and compensates small angular errors.
AI-generated illustrationDrive train
Shear pin / overload coupling
Weak link or coupling that disconnects on overload, protecting gearbox and rolls.
AI-generated illustrationDrive train
Mill motor
Large DC or AC motor driving one stand or a group of stands.
AI-generated illustrationDrive train
Roller table motor
Rugged motor driving individual roller table rolls directly; heat- and shock-resistant.
AI-generated illustrationDrive train
Drive converter
Power electronics controlling speed and torque of mill and roller table motors.
AI-generated illustrationCooling, straightening, cutting
Cooling bed
Large grid on which bars and sections cool evenly after rolling.
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AI-generated illustrationCooling, straightening, cutting
Cooling bed rake
Walking beam or rake that moves the stock step by step across the cooling bed.
AI-generated illustrationCooling, straightening, cutting
Straightening machine
Machine that straightens bars, sections or tubes with staggered rolls.
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AI-generated illustrationCooling, straightening, cutting
Straightening roll
Hardened roll of the straightener; contour matched to the profile, a wear part.
AI-generated illustrationCooling, straightening, cutting
Cold shear
Shear that cuts cooled bars to commercial lengths.
AI-generated illustrationCooling, straightening, cutting
Cold saw
Circular saw for sections and tubes that gives square cuts with little burr.
AI-generated illustrationCooling, straightening, cutting
Saw blade
Segmental or carbide saw blade for hot and cold saws; sharpened and replaced.
AI-generated illustrationCooling, straightening, cutting
Bundling machine
Unit that counts, forms and ties bars into bundles.
AI-generated illustrationCooling, straightening, cutting
Tying head
Head of the bundling or coil tying machine that wraps wire or strap around the bundle.
AI-generated illustration
AI-generated illustrationTesting and marking
Stamping machine
Machine that permanently stamps heat or batch numbers into steel.
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AI-generated illustrationTesting and marking
Marking punch
Digit or character punch made of tool steel; a wear part of the stamping machine.
AI-generated illustrationTesting and marking
Pipe marking system
System that coats pipes and prints data such as size and standard on them.
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AI-generated illustrationTesting and marking
Marking head
Print or dot-peen head that applies text to steel; connected via special cable.
AI-generated illustrationTesting and marking
Label applicator
Device that attaches labels with barcode or data to bundles and coils.
AI-generated illustrationTesting and marking
Ultrasonic probe
Probe that detects internal flaws in tubes, bars or plates.
AI-generated illustrationTesting and marking
Eddy current coil
Coil for in-line non-destructive testing for surface cracks.
AI-generated illustrationTesting and marking
Pyrometer
Non-contact thermometer for the temperature of the stock.
AI-generated illustrationTesting and marking
Profile gauge
Optical measuring system for diameter and contour of bars and sections.
AI-generated illustrationHydraulics and lubrication
Hydraulic cylinder
Cylinder for screw-down, tilting, pushing and clamping in steel plant and rolling mill.
AI-generated illustrationHydraulics and lubrication
Seal kit
Set of seals and guide rings for a specific cylinder or rotary union.
AI-generated illustrationHydraulics and lubrication
Servo valve
High-precision valve for hydraulic gap control and positioning.
AI-generated illustrationHydraulics and lubrication
Hydraulic pump
Axial piston or gear pump that generates pressure for the hydraulic system.
AI-generated illustrationHydraulics and lubrication
Accumulator
Bladder or piston accumulator that absorbs pressure peaks and stores oil for fast movements.
AI-generated illustrationHydraulics and lubrication
Hydraulic filter
Filter element that keeps dirt out of the hydraulic oil and protects valves.
AI-generated illustrationHydraulics and lubrication
Hydraulic hose assembly
Hose with fittings for moving connections; heat-protected near furnaces.
AI-generated illustrationHydraulics and lubrication
Central lubrication system
Pump and distributors that deliver grease or oil automatically to many bearing points.
AI-generated illustrationHydraulics and lubrication
Progressive distributor
Distributor block that divides lubricant successively among the lube points.
AI-generated illustrationHydraulics and lubrication
Oil-water cooler
Heat exchanger that keeps hydraulic or gear oil at operating temperature.
AI-generated illustrationHydraulics and lubrication
Rotary union
Feeds cooling water, oil or air into rotating rolls, rollers and drums.
AI-generated illustrationConveying and lifting
Roller table roll
Roll on which slabs, billets and bars are conveyed; often water-cooled.
AI-generated illustrationConveying and lifting
Walking beam
Beams that lift and carry the material step by step, for example in a furnace or cooling bed.
AI-generated illustrationConveying and lifting
Crane wheel
Wheel of an overhead or ladle crane; wears on tread and flange.
AI-generated illustrationConveying and lifting
Crane rope
Wire rope of the hoist; to be inspected regularly and replaced when discard criteria are reached.
AI-generated illustrationConveying and lifting
Rope drum
Drum of the hoist on which the rope is wound into grooves.
AI-generated illustrationConveying and lifting
Lifting magnet
Electromagnet on the crane for lifting scrap, plates and bar bundles.
AI-generated illustrationConveying and lifting
Slab and coil tong
Crane tong that clamps and lifts slabs or coils safely.
AI-generated illustrationConveying and lifting
Crane brake
Drum or disc brake on hoist and travel drives; a safety-relevant wear part.
AI-generated illustrationConveying and lifting
Conductor rail
Conductor rail with collector that supplies the crane while it travels.
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