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[lmm-steel]

Analysis of the Causes of Shell Formation in the Billet Copper Mould Tube

The stability and efficiency of billet copper mould tube production essentially involve dancing with the laws of thermodynamics. Cooling wat

The stability and efficiency of billet copper mould tube production essentially involve dancing with the laws of thermodynamics. Cooling water, this silent partner, must have its flow rate precisely controlled within an “optimal process window” verified through rigorous calculations and countless practical trials.

[lmm-steel]

Characteristics of Electric Arc Furnace Steelmaking and Main Causes of Lining Material Damage

Electric Arc Furnace Steelmaking is flexible and efficient but faces lining damage from oxidation and erosion, requiring durable, high-stabi

Electric Arc Furnace Steelmaking is flexible and efficient but faces lining damage from oxidation and erosion, requiring durable, high-stability refractory materials.

[lmm-steel]

Iron Oxide Scale Formation During Continuous Casting

The formation of iron oxide scale in continuous casting is the result of a chemical reaction and physical diffusion between iron elements on

The formation of iron oxide scale in continuous casting is the result of a chemical reaction and physical diffusion between iron elements on the billet surface and oxidizing media. It causes cost waste and quality risks in steel production, directly impacting the entire process from continuous casting and rolling to subsequent processing.

[lmm-steel]

The Influence of Magnesium Oxide Content on the Performance of Corundum-Spinel breathable bricks for Steel Ladles

Ladle refining is a crucial step in steelmaking, and breathable bricks are the most critical functional components in this process.

Ladle refining is a crucial step in steelmaking, and breathable bricks are the most critical functional components in this process. Their performance is essential for the smooth implementation of refining and ensuring steel quality and output. 

[lmm-steel]

Three-roll reduction sizing mill roll ring selection: Carbide vs. High-speed steel

The three-roll reduction mill is a core piece of equipment for ensuring the dimensional accuracy, surface quality, and mechanical properties

The three-roll reduction mill is a core piece of equipment for ensuring the dimensional accuracy, surface quality, and mechanical properties of bars and wires. The selection of the roll ring in the three-roll mill directly determines production efficiency and roll changing frequency.

[lmm-steel]

https://magnesiacarbonbricklmm.com/why-are-slag-line-bricks-in-steel-ladles-prone-to-damage-and-how-can-this-be-improved/

The slag line is the part of the ladle where molten steel is in direct contact with air. Due to the temperature difference and oxygen-rich environment, the erosion rate in this area is significantly faster than in other parts. Furthermore, the tilting of molten steel and slag removal during operation cause considerable damage to the slag line. Therefore, the erosion of the slag line has always been a bottleneck problem in the steelmaking and ironmaking industries. The slag line not only experiences rapid erosion but also problems such as slagging, red-hot discoloration, spalling, and steel leakage. Slag line bricks generally refer to the refractory bricks laid in the area from the third to the eighth layer downwards from the ladle opening.

[lmm-steel]

Why are your new rolls flawless, yet the steel has scratches? A deep dive into the mill guide.

Rolling mill guide alignment, clearance accuracy, and wear management ensure seamless production and superior steel quality in high-speed ro

Stop unexplained cobbles and surface defects. This guide explores rolling mill guide alignment, gap precision, and wear management to ensure seamless production and superior steel quality in high-speed rolling environments.

[lmm-steel]

Why do longitudinal cracks occur in continuously cast round billets?

Longitudinal cracks in continuously cast round billets occur when the thermal stress and phase transformation stress generated during the so

Longitudinal cracks in continuously cast round billets occur when the thermal stress and phase transformation stress generated during the solidification process of molten steel exceed the load-bearing limit of the billet shell. Furthermore, the billet’s own crystal structure and composition weaken its crack resistance, ultimately leading to the formation and propagation of longitudinal cracks in the weak areas. The main causes are related to the non-uniformity of the molten steel solidification process, the characteristics of the steel grade, and the poor plasticity in the high-temperature brittle range.

[lmm-steel]

Analysis and Prevention of Abnormal Stopping Accidents of Tundish Stoppers in Continuous Casting Machines

This paper analyzes and studies the causes of abnormal stopping accidents of stoppers in tundishes during continuous casting machine product

This paper analyzes and studies the causes of abnormal stopping accidents of stoppers in tundishes during continuous casting machine production, based on production practice. Targeted optimization measures are proposed to effectively prevent such accidents.

[lmm-steel]

How to solve the problems of "blue line" and "inner hexagon" in the sizing process of seamless steel pipes?

In the production of seamless steel pipes, the sizing process is the final hurdle determining the dimensional accuracy of the finished produ

In the production of seamless steel pipes, the sizing process is the final hurdle determining the dimensional accuracy of the finished product. However, the traditional two-roll sizing process has long been plagued by two major quality problems: “blue lines” (surface scratches) and “hexagonal inner corner” (uneven wall thickness). These problems are particularly problematic when producing high-grade, thin-walled pipes, directly leading to a precipitous drop in yield.

[lmm-steel]

Analysis of Damage Causes of 300t Ladle Slide Plate and Technical Improvements to Increase Their Continuous Use Rate

Under the background of "high efficiency and low cost" in steelmaking plants, increasing the continuous use rate of the slide plate to short

Under the background of “high efficiency and low cost” in steelmaking plants, increasing the continuous use rate of the slide plate to shorten ladle turnaround time has become an effective measure. Increasing the continuous use rate of the slide plate can not only save refractory material costs but also reduce labor intensity and tapping temperature.

[lmm-steel]

https://ccmcoppermouldtube.com/morphology-and-characteristics-of-transverse-cracks-at-the-corner-of-slabs/

The location of corner cracks in slabs varies depending on the steel grade. For most steel grades, corner cracks are distributed on the inner curved surface of the slab. For some steel grades, corner cracks are distributed on two narrow faces near the inner curved surface. 

[lmm-steel]

https://lmm-rollingmill.com/blog/2026-global-steel-trade-how-3-roll-sizing-mills-navigate-export-licenses-cbam/

Entering 2026, global steel trade rules have undergone a landmark transformation. China has officially fully restarted its steel export license management system, and the EU’s Carbon Border Adjustment Mechanism (CBAM) has entered its formal taxation phase. For overseas steel companies and export traders, the traditional era of “low prices and high volume” is over; “high quality, low carbon footprint, and high stability” have become the key to survival.

[lmm-steel]

https://ccmcoppermouldtube.com/the-influence-of-protective-slag-on-carbon-increase-in-molten-steel-and-control-measures/

In the continuous casting process of ultra-low carbon steel, carbonaceous materials in the protective slag penetrate into the surface of the cast billet, increasing the carbon content on the surface. Because the protective slag contains a certain amount of carbonaceous material, it easily causes carburization on the surface of the billet and carbon increase in the molten steel within the copper mould tube. 

[lmm-steel]

Several Simple Methods to Improve the Thermal Shock Resistance of Low-Carbon Magnesia-Carbon Bricks

Thermal shock resistance is an important property of low-carbon magnesia-carbon materials, but simply improving the thermal shock resistance

Thermal shock resistance is an important property of low-carbon magnesia-carbon materials, but simply improving the thermal shock resistance may affect other properties of the material, such as oxidation resistance and slag erosion resistance.

[lmm-steel]

https://lmm-rollingmill.com/blog/the-nemesis-of-stainless-steel-rolling-how-to-solve-the-persistent-problems-of-high-alloy-steels-surface-cracks-and-difficult-deformation/

Faced with the pain points of surface cracking and high deformation resistance in the rolling of high-alloy steel and tool steel, the three-roll mill, with its unique triaxial compressive stress advantage, has become a highly efficient processing solution. This article provides an in-depth analysis of how three-roll rolling improves the yield of difficult-to-deform metals.

[lmm-steel]

Causes and Measures to Reduce Graphite Electrode Consumption in Electric Arc Furnace Smelting

With the continuous increase in electric arc power and the optimization of smelting technology, the requirements for the physicochemical pro

With the continuous increase in electric arc power and the optimization of smelting technology, the requirements for the physicochemical properties of graphite electrodes are becoming increasingly stringent, while the consumption rate is decreasing.