Continuous Casting Mold Assembly

Product Specifications

Technical details and manufacturing context for Continuous Casting Mold Assembly

Definition

The Continuous Casting Mold Assembly is a precision-engineered component within the Integrated Continuous Casting Production System. It serves as the primary forming and initial cooling zone where molten steel from the tundish is solidified into a continuous strand with a specific cross-sectional profile (e.g., slab, bloom, billet). It is a key determinant of final product surface quality and internal structure. The assembly typically consists of a water-cooled copper mold plate, a mold frame, and associated cooling and oscillation systems. The mold plate is made of a copper alloy such as Cu-Cr-Zr, which offers high thermal conductivity and wear resistance, and is often coated with a nickel-chromium layer to extend service life. The mold length typically ranges from 700 to 1200 mm, and the cross-section size can be customized from 150×150 mm to 300×400 mm. The mold taper, which compensates for strand shrinkage, is usually set between 0.8% and 1.2% per meter. Cooling water flow rate and pressure are critical for heat removal; typical values are 100–200 m³/h and 0.6–1.0 MPa, respectively. The mold oscillation frequency and stroke, typically 50–200 cpm and 2–8 mm, prevent sticking and affect surface quality. The operating temperature of the cooling water inlet is usually 100–300 °C, and the total weight of the assembly ranges from 1500 to 5000 kg depending on size and configuration. The surface roughness of the mold plate is maintained at Ra 0.8–1.6 µm to ensure strand quality. These parameters are provided as reference ranges and must be verified for the specific application with the legal manufacturer or supplier. The assembly is designed to operate within defined boundaries; deviations in cooling water flow or pressure can lead to breakouts, and excessive wear or coating degradation may require refurbishment or replacement.

Working Principle

Molten metal flows into the water-cooled copper mold cavity. Heat is rapidly extracted through the mold walls, causing a solidifying shell to form. The assembly may incorporate features like oscillation to prevent sticking and lubricant channels to reduce friction as the strand is withdrawn. The cooling water flow rate and pressure are critical for heat removal; too low a flow can cause breakouts. The mold taper compensates for strand shrinkage, and the oscillation parameters affect surface quality. The solidifying shell thickens as it moves through the mold, and the strand exits with a defined cross-section.

Common Materials

Copper Alloy (e.g., Cu-Cr-Zr), Stainless Steel (structural parts)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Mold Length	700–1200 mm	Determines residence time and shell thickness
Cross-Section Size	150×150–300×400 mm	Defines strand dimensions; custom sizes available
Mold Taper	0.8–1.2 %/m	Compensates for strand shrinkage
Cooling Water Flow Rate	100–200 m³/h	Critical for heat removal; too low causes breakouts
Cooling Water Pressure	0.6–1.0 MPa	Ensures adequate flow through channels
Mold Plate Material	CuCrZr	High thermal conductivity and wear resistanceASTM B187
Coating Thickness	0.05–0.15 mm	Ni-Cr coating extends mold life
Surface Roughness	Ra 0.8–1.6 µm	Affects strand surface quality
Mold Oscillation Frequency	50–200 cpm	Prevents sticking; adjustable
Mold Oscillation Stroke	2–8 mm	Affects lubrication and surface quality
Operating Temperature	100–300 °C	Cooling water inlet temp; higher reduces mold life
Weight	1500–5000 kg	Depends on size and configuration

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

Copper Mold Plates / Tubes Part
Forms the primary cooling surface and defines the strand shape.

Material: Copper Alloy (e.g., Cu-Cr-Zr)
Mold Frame / Housing Part
Provides structural support, alignment, and houses cooling channels.

Material: Carbon Steel or Stainless Steel
Oscillation Mechanism
Imparts a reciprocating motion to the mold to prevent sticking of the solidifying shell.

Material: Alloy Steel
Water Jacket / Cooling System
Circulates cooling water to extract heat from the mold plates.

Material: Stainless Steel
Lubrication System (e.g., oil nozzles) Part
Applies lubricant (mold powder or oil) to the mold wall to reduce friction.

Material: Stainless Steel

Application & selection

Application Fit & Sizing Matrix

Operational Limits

pressure:	0.5-2.0 MPa (cooling water system pressure)
other spec:	Cooling water flow rate: 100-500 m³/h per mold, Strand withdrawal speed: 0.5-6.0 m/min, Mold oscillation frequency: 50-400 cpm
temperature:	1200-1600°C (molten steel operating range)

Media Compatibility

✓ Molten carbon steels ✓ Molten low-alloy steels ✓ Molten stainless steels (300 series)

Unsuitable: Highly corrosive molten metals (e.g., aluminum with high magnesium content, reactive metals like titanium)

Sizing Data Required

Required strand cross-section dimensions (mm)
Target casting speed (m/min)
Cooling water availability (flow rate in m³/h, temperature in °C)

Risk, maintenance & compliance

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause

Thermal fatigue cracking

Cause: Cyclic heating and cooling during casting cycles causes repeated thermal expansion and contraction, leading to stress concentration and crack initiation in the copper mold plates, particularly at water channel corners and bolt holes.

Wear and dimensional degradation

Cause: Abrasive contact with the solidifying steel shell and oscillation marks, combined with inadequate lubrication or misalignment, results in progressive wear of the mold's inner surface, altering critical taper and reducing heat transfer efficiency.

Maintenance Indicators

Visible longitudinal cracks or crazing on the mold's hot face, often accompanied by water leakage or steam emission from cooling channels.
Abnormal oscillation noise or increased friction sounds during operation, indicating excessive wear, misalignment, or lubrication failure in the mold assembly.

Engineering Tips

Implement strict water quality control and flow monitoring to prevent scaling and corrosion in cooling channels, ensuring consistent heat extraction and reducing thermal stress.
Establish a precision alignment and taper verification protocol during mold assembly and after each maintenance cycle, using laser measurement tools to maintain optimal geometry and contact with the strand.

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

ASTM A48/A48M - Standard Specification for Gray Iron Castings DIN 1691 - Grey cast iron with lamellar graphite

Quoted from the published standard.

Manufacturing Precision

Mold tube inner diameter: +/-0.05mm
Mold plate flatness: 0.08mm per 1000mm

Quality Inspection

Ultrasonic Testing for internal defects
Dimensional verification with CMM (Coordinate Measuring Machine)

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Continuous Casting Mold Assembly

Manufacturer profiles associated with Continuous Casting Mold Assembly.

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Frequently Asked Questions

What is the typical mold length range?

The mold length typically ranges from 700 to 1200 mm, which determines residence time and shell thickness. Confirm the exact value for your application with the manufacturer.

What materials are used for the mold plate?

The mold plate is typically made of a copper alloy such as Cu-Cr-Zr, which offers high thermal conductivity and wear resistance. A nickel-chromium coating may be applied to extend life.

Why is cooling water flow rate critical?

Cooling water flow rate is critical for heat removal; too low a flow can cause breakouts. Typical values are 100–200 m³/h, but must be verified for your specific setup.

How does mold oscillation affect casting?

Mold oscillation prevents sticking and affects surface quality. Frequency and stroke are typically 50–200 cpm and 2–8 mm, respectively. Adjustments should be based on the strand grade and size.

Related equipment

Industrial Ecosystem & Supply Chain Structure

Complementary Systems

Downstream Applications

Steel Billets
LINKED
Steel Blooms
LINKED
Steel Slabs
LINKED

Specialized Tooling

Data Basis

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

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 12 October 2026

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