Editorial Technical Reference

Ladle Carrier / Yoke

This page explains how Ladle Carrier / Yoke is classified within Basic Metal Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Structural component that supports and transfers molten metal ladles during lifting and sealing operations

Ladle Carrier / Yoke in a manufacturing environment
Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Ladle Carrier / Yoke

Definition
The Ladle Carrier / Yoke is a robust structural frame or yoke assembly that forms an integral part of the Ladle Lift & Seal Mechanism in basic metal manufacturing. Its primary function is to securely cradle and support ladles containing molten metals during transfer, pouring, and sealing processes. The carrier/yoke is designed to engage with the ladle's trunnions or lifting lugs, distributing the ladle's weight evenly while maintaining proper alignment for controlled lifting, transfer, and sealing operations. This component is critical for ensuring safe and efficient handling of molten metal, as it directly influences the stability and precision of ladle movements.

Constructed from high-strength materials such as carbon steel, alloy steel, or heat-resistant steel, the carrier/yoke is engineered to withstand the demanding conditions of metal manufacturing, including high temperatures and mechanical stress. The design incorporates features that allow for precise positioning and tilting, with a typical tilting angle range of 0 to 90 degrees, and a positioning accuracy of ±5 mm to ensure proper sealing alignment. The rated lifting capacity typically ranges from 50 to 120 tonnes, matching the ladle weight plus a safety factor, and the lifting speed is controlled between 2 and 8 m/min to prevent sloshing of the molten metal.

The carrier/yoke operates within a temperature range of -20°C to 80°C, with heat shields required above 80°C. The hydraulic system pressure, typically 16 to 25 MPa, provides the necessary lifting force, and the component is protected against dust and splash water with an IP54 to IP65 rating. Material grades such as Q345B to Q460C are commonly used, with surface hardness ranging from HB 200 to 280 for wear resistance. The weight of the carrier/yoke itself varies from 5 to 15 tonnes, depending on capacity and design.

For procurement and verification, it is essential to confirm model-specific values and standards with the legal manufacturer or supplier. The listed parameters and standards serve as reference ranges and must be validated for the specific application. The carrier/yoke is a critical component that requires regular inspection and maintenance to ensure operational safety and reliability.
Working Principle
The carrier/yoke is mounted to the lifting mechanism and engages with the ladle's trunnions or lifting lugs. When the mechanism activates, the yoke distributes the ladle's weight evenly while maintaining proper alignment for controlled lifting, transfer, and sealing operations. The hydraulic system provides the necessary force, and the tilting mechanism allows for precise pouring. The design ensures that the ladle remains stable and properly positioned throughout the process, minimizing the risk of spills or misalignment.
Common Materials
Carbon Steel, Alloy Steel, Heat-Resistant Steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Lifting Capacity50–120 tMatches ladle weight plus safety factorISO 4301-1
Ladle Diameter Range2000–3500 mmMust fit standard ladle shells
Lifting Speed2–8 m/minControlled to prevent sloshing
Tilting Angle0–90 °For pouring operations
Positioning Accuracy±5 mmEnsures ladle sealing alignment
Operating Temperature-20–80 °CAbove 80°C requires heat shields
Hydraulic System Pressure16–25 MPaBelow 16 MPa insufficient lifting force
Material GradeQ345B–Q460CHigh strength steel for structural integrityGB/T 1591
Surface HardnessHB 200–280Wear resistance for contact surfacesISO 6506-1
Weight5–15 tDepends on capacity and design
Degree of ProtectionIP54–IP65Dust and splash water protectionIEC 60529

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Main Beam Part
    Primary load-bearing structural member that spans between lifting points
    Material: Alloy Steel
  • Trunnion Hooks Part
    Engagement points that connect to the ladle's trunnions for secure lifting
    Material: Forged Steel
  • Mounting Brackets Part
    Attachment points for connecting to the lifting mechanism
    Material: Carbon Steel
  • Reinforcement Plates Part
    Additional structural support at high-stress points
    Material: Steel Plate

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Ladle Carrier / Yoke.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (structural load bearing only)
other spec: Max ladle capacity: 50-300 tons, Lifting speed: 0.1-0.5 m/s, Duty cycle: Continuous/intermittent with cooling periods
temperature: Ambient to 1500°C (surface temp near ladle), continuous exposure to radiant heat
Media Compatibility
✓ Molten steel/iron handling ✓ High-temperature slag transport ✓ Foundry/casting shop environments
Unsuitable: Marine/coastal environments (salt corrosion)
Sizing Data Required
  • Ladle weight capacity (tons)
  • Lifting hook/attachment interface dimensions
  • Required clearance for ladle rotation/tilting

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Structural fatigue cracking
Cause: Cyclic thermal stresses from repeated exposure to molten metal temperatures (typically 1500-1600°C) combined with mechanical loading during ladle transport, leading to crack initiation at stress concentration points like weld joints and geometric transitions.
Bearing and pivot joint degradation
Cause: Contamination from airborne metallurgical dust and slag particles entering lubrication systems, combined with inadequate lubrication intervals, resulting in abrasive wear, increased clearances, and eventual seizure or catastrophic failure during operation.
Maintenance Indicators
  • Visible cracks or deformation in yoke arms or structural welds, particularly after thermal cycles
  • Abnormal grinding, knocking, or uneven motion during ladle rotation or carrier movement indicating bearing/pivot issues
Engineering Tips
  • Implement regular thermal imaging inspections to detect early-stage stress concentration areas and schedule repairs during planned outages before cracks propagate
  • Establish a precision lubrication program with sealed bearing systems and contamination control measures, using high-temperature grease specified for metallurgical applications

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 12480-1:2018 Cranes - Safe use - Part 1: General ANSI/ASME B30.20-2018 Below-the-Hook Lifting Devices DIN 15018-1:1984 Cranes; principles for steel structures; analysis and design

Quoted from the published standard.

Manufacturing Precision
  • Bearing bore diameter: +/-0.025mm
  • Parallelism of lifting arm mounting surfaces: 0.15mm
Quality Inspection
  • Magnetic Particle Testing (MT) for weld integrity
  • Load Testing to 125% of rated capacity

Manufacturers of Ladle Carrier / Yoke

Manufacturer profiles associated with Ladle Carrier / Yoke.

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Frequently Asked Questions

What is the primary function of a ladle carrier/yoke?

The primary function is to support and transfer ladles containing molten metal during lifting, pouring, and sealing operations. It engages with the ladle's trunnions or lifting lugs and distributes the weight evenly to ensure safe and controlled handling.

What materials are commonly used for ladle carriers/yokes?

Common materials include carbon steel, alloy steel, and heat-resistant steel. The specific material grade, such as Q345B to Q460C, is selected based on the required strength and temperature resistance, and must be confirmed with the manufacturer for the specific application.

What are the typical capacity and speed ranges for a ladle carrier/yoke?

The rated lifting capacity typically ranges from 50 to 120 tonnes, and the lifting speed is controlled between 2 and 8 m/min to prevent sloshing. These values are reference ranges and must be verified for the actual model.

How is the positioning accuracy of the ladle carrier/yoke ensured?

Positioning accuracy is typically ±5 mm, which is achieved through precise hydraulic control and mechanical design. This ensures proper alignment for sealing operations. The actual accuracy must be confirmed with the manufacturer.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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