Technologies for Quality-Centric Efficiency in Continuous Casting technology

Core Technologies for Quality-Centric Efficiency in Continuous Casting

High-Efficiency Continuous Casting Key Technical Points

The liquid level fluctuation in the mold is stably controlled within ±3 mm.
Grooving the copper tube of the mold, to enhance water flow turbulence, improve heat transfer efficiency and appropriate increase water flow velocity and volume.
Non-sinusoidal vibration is adopted to ensure precise mold oscillation, while increased consumption of casting powder/mold powder maintains billet surface quality.
Secondary Cooling Zone Pinch Roll Arrangement: Dense arrangement of pinch rolls in the secondary cooling zone ensures sufficient billet shell thickness to prevent misalignment and bulging
Extended cooling section ensures complete solidification of the billet before reaching the flame cutting machine.

High-Efficiency Continuous Casting Oscillation Device: Non-Sinusoidal Vibration and Variable Amplitude-Frequency Control Technology

High-efficiency continuous casting mold technology

High-efficiency continuous casting secondary cooling technology

Mold Molten Steel Level Control Technology

Automated Mould Powder Feeding Technology
Robot Automatic Identification Technology
Robot Automated Mould Powder Feeding Technology
High temperature coatings

Specializing in the metallurgical continuous casting technology field.

As a high-tech enterprise integrated with application technology R&D, comprehensive solutions, manufacturing, sales, and after-sales services.

LMM provides customers with full-process technology solutions in the continuous casting domain.

Non-Sinusoidal Oscillation System and Amplitude-Variable Frequency Conversion Technology

Project	Technical Parameter
Longitudinal deviation	≤±0.10mm
Lateral deviation	≤±0.10 mm
Amplitude	0~10 mm online adjustable
Frequency	0~400 times/min online adjustable

The electric cylinder possesses self-developed intellectual property rights, with key components (e.g., screw-nut assembly, servo motors) utilizing genuine imported parts. It features high reliability, low noise, pollution-free operation, and maintenance-free performance.

Project	Technical Parameter
Control Accuracy of Electric Cylinder	≤0.01mm
Stroke of Electric Cylinder	75mm
Lead of Screw Rod	Custom Made
Frequency of oscillation	0-400cpm

On-Site Installation Examples

High Efficiency Continuous Casting Mold Vibration Frame

Square and round billet continuous casting machine semi-leaf spring type:

The arc-simulating precision is high, which can meet the requirement that the crystallizer makes arc-simulating movement to make the ingot with liquid core and the copper tube produce relative movement and separation. It has good adaptability, the equipment is not easy to be damaged during use, and the repair difficulty is small.

Four-link type square and round billet continuous casting machine:

High acceleration, high operating frequency, good overall load capacity and performance, excellent guiding performance, strong load-bearing capacity, high wear resistance, effective vibration isolation system, and excellent reaction mass and damping effect.

Slab Vibration Frame: High vibration accuracy, good lateral stability and smooth movement.

High-Efficiency Continuous Casting Mold Technology

It increases the heat transfer area of the copper tube, enhances the heat transfer efficiency of the mold, ensures uniform cooling, improves strand quality, achieves a thicker solidified shell at the mold exit, and reduces the risk of breakout.

Project	Technical Parameter
Material Quality	Phosphorus Deoxidized Copper ； Silver-bearing Copper ; Chromium Zirconium Copper
Taper	Single Taper, Multi taper, Parabolic taper, Composite taper, etc
Length of Copper Tube	700-900mm
Thickness of Copper Tube	10~50 mm

The temperature distribution at the hot face will be more uniform.
The peak temperature at the hot face can be reduced, minimizing deformation of the copper tube.
The average heat flux will be enhanced, promoting earlier solidification of the meniscus.
The temperature difference between corner and central regions will be significantly reduced.
This facilitates high casting speeds and significantly increases casting throughput.

High-Efficient Continuous Casting Secondary Cooling Technology

For different machine types (steel grades & cross-sections), specialized water distribution models can be developed to achieve dynamic optimization with casting speed, ensuring that slab internal homogeneity and surface quality meet premium rolling requirements.

To meet the requirements of different casters, high-efficiency secondary cooling nozzles are adopted to achieve full coverage of secondary cooling, which improves cooling uniformity.
A segmented plug-and-play spray branch pipe design at the end of the secondary cooling zone enables online adjustment of the cooling length, accommodating the varying cooling length demands for producing carbon steels and alloy steels.
The secondary cooling water distribution system employs a closed-loop control system composed of electromagnetic flowmeters, pneumatic control valves, and PLCs to achieve dynamic and automatic water allocation.

Mold Molten Steel Level Control System

Mold Molten Steel Level Detection and Stopper Rod Control

Project	Technical Parameter
Liquid Level Control Accuracy	≤±3 mm
Liquid Level Detection Accuracy	1%
System Response Time	0.1s
Signal Transmission Distance	100 m
Electric Cylinder Stroke	120~200 mm
Institutional Thrust	500 Kg adjustable

Unaffected by high temperature and humidity, with high reliability.

High detection accuracy and short response time.

Imported premium brands for achieving excellent stability.

Ultra-low backlash, high-precision ball screw control, and long service life.

High-precision linear guides replace complex bearings, eccentric rollers, and other guiding devices.Maintenance requirements are reduced, and stability is enhanced.

Level abnormality alarm (steel leakage, steel overflow alarm); Detector failure alarm; PID auto-control;Manual/auto disturbance-free switching

Automated Mould Powder Feeding Technology

Project	Technical Parameter
Hopper Capacity	150~400KG
Slag feeding rate	0~90KG/h
Adaptive slag type	Hollow granular slag, Powder slag

Technical Feature:

A water-wheel type metering device replaces the traditional screw-type metering device, effectively avoiding dust caused by flux crushing, preserving the process characteristics of the flux, and reducing flux waste

Customized flux nozzle designs with various options available to meet on-site process requirements；
Uniform flux feeding, following the principle of “frequent but small additions,” with fully automated operation to reduce labor intensity；
Comprehensive data statistics and storage, real-time monitoring via computer interface, and functions such as material shortage alarms；
Integrated flux heating, drying, and residual slag discharge functions.

Robot Automatic Identification Technology

Automatic Marking System

Project	Technical Parameter
Dotting material	High temperature water-based coating
Jet speed	1 s/ character
Adapt to the product	Slab, square billet, round billet, hot coil

Robot Automated Mould Powder Feeding system for slab

Project	Technical Parameter
Cross section of slag addition	Slab
Maximum slag addition rate	4.5KG/min
Storage bin capacity	Designed by the user
Adapt to slag type	Hollow granular slag, Powder slag