Main Functions

· Transporting molten steel between process stages

· Temporary molten steel holding and thermal preservation

· Supporting secondary refining operations

· Delivering molten steel to continuous casting systems

· Ensuring safe and stable hot metal handling

Structural Design

A typical steel ladle consists of:

· Ladle Shell

· Trunnions and Trunnion Blocks

· Bottom and Sidewall Reinforcement Structure

· Slag Line Area

· Refractory Lining System

· Slide Gate or Nozzle System

· Lifting and Tilting Components

The design is optimized to withstand:

· Extreme thermal stress

· Repeated heating and cooling cycles

· Heavy mechanical loading

· Molten steel impact and slag corrosion

Materials

Steel ladle shells are typically manufactured using high-strength carbon steel or low-alloy structural steel with excellent weldability and thermal resistance.

Common materials include:

· Q345R

· ASTM A516

· S355 series structural steel

· Customized heat-resistant steel grades

Critical areas such as trunnions and reinforcement sections may utilize thicker plates and enhanced welding structures to improve fatigue resistance and operational safety.

Manufacturing Process

Production is carried out under strict fabrication and dimensional control procedures, including:

· CNC plate cutting

· Heavy plate rolling and forming

· Automatic and semi-automatic welding

· Stress-relief heat treatment

· Precision machining of trunnion areas

· Assembly and fit-up inspection

Quality Control

Comprehensive quality control procedures are implemented throughout manufacturing, including:

· Raw material certification verification

· Welding procedure qualification (WPS/PQR)

· Ultrasonic Testing (UT)

· Magnetic Particle Testing (MT)

· Dimensional inspection

· Load-bearing structure inspection

· Non-destructive examination (NDT)

· Final assembly and visual inspection

All critical weld seams and structural components are inspected to ensure operational reliability and long service life under demanding steel plant conditions.

Features

· Heavy-duty and high-strength structure

· Excellent thermal shock resistance

· Reliable long-term operation

· Optimized structural stability

· Customizable capacity and configuration

· Suitable for intensive steel plant operations

Applications

Widely used in:

· Integrated Steel Plants

· Electric Arc Furnace (EAF) Shops

· Ladle Furnace (LF) Operations

· Continuous Casting Plants

· Ferroalloy Plants

· Foundries and Metallurgical Facilities

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