Shandong Luming New Materials Technology Co., Ltd. is one of the leading manufacturers and suppliers of refractory slide gate plates in China. We have world-leading production equipment and strong manufacturing capabilities. Please feel free to buy premium refractory slide gate plates at competitive price from our factory.

Refractory Slide Gate Plates for Steel Ladles and Continuous Casting Manufacture

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Tel/WhatsApp:0086-18905335290

Email:luming@lm-kiln.com

 

 

 

Slide Gate Plates are core functional refractory components of slide gate systems used in steelmaking and continuous casting. Installed in the slide gate mechanisms at the bottom of ladles or tundishes, they work together with upper and lower plates, nozzles, and other flow-control components to regulate molten steel flow.

During casting, two or more slide gate plates move relative to each other, allowing the flow holes to fully align, partially overlap, or become misaligned. This enables smooth opening, precise flow-rate control, and reliable shut-off of molten steel, while also helping to control slag during the final stage of casting.

We manufacture Slide Gate Plates in Alumina Carbon (Al-C), Alumina Zirconia Carbon (Al-Zr-C), Magnesia Carbon (Mg-C), Magnesia Spinel and other customized materials. Material selection and product design can be tailored to the steel grade, ladle capacity, casting conditions, slide gate system, and required service life.

Because Slide Gate Plates are directly exposed to high-temperature molten steel, chemical attack, thermal shock, and mechanical wear, dimensional accuracy and sliding-surface sealing are critical to reliable operation. Our Slide Gate Plates feature high refractoriness, high mechanical strength, excellent thermal shock resistance, and strong resistance to molten steel and slag erosion. They are designed to provide stable flow control, reliable sealing, and consistent performance over multiple heats.

 

 

Sliding Gate Plates are plate-shaped functional refractories with a precisely machined steel flow bore. They are installed inside ladle or tundish slide gate systems and work in pairs or in multi-plate configurations to control molten steel flow.

A typical slide gate brick consists of a refractory plate body, steel flow bore, working surface, and bore opening area. The plate body provides resistance to high-temperature molten steel, mechanical pressure, thermal shock, erosion, and wear. The working surface must maintain good flatness and dimensional accuracy to ensure reliable contact and sealing between adjacent plates.

During operation, the slide gate mechanism drives one plate to move relative to the other. By changing the relative position of the steel flow bores, the effective flow area can be increased, reduced, or completely closed.

1.Fully Open: The flow bores are completely aligned, providing the maximum flow passage for molten steel.

2.Throttling: The flow bores are partially overlapped, reducing the effective flow area and regulating molten steel flow.

3.Fully Closed: The flow bores are completely offset, cutting off the molten steel flow.

This sliding principle enables the slide gate system to perform three essential functions: opening, flow-rate control, and shut-off of molten steel.

During service, the bore area is exposed to high-temperature and high-velocity molten steel, while the working surfaces experience mechanical contact and sliding. Therefore, Slide Gate Plates require a balanced combination of high-temperature strength, erosion resistance, thermal shock resistance, wear resistance, low molten-steel penetration, and dimensional stability.

The performance of the slide gate plate directly affects the stability and reliability of molten steel flow control and contributes to safe continuous casting and longer service life of the slide gate system.

1. Excellent Thermal Shock Resistance:Designed to withstand repeated heating and cooling cycles during ladle operation and continuous casting.

2. High Resistance to Molten Steel Erosion:The selected refractory composition provides strong resistance to erosion caused by high-temperature and high-velocity molten steel.

3. Strong Slag Corrosion Resistance:Suitable refractory grades can be selected according to steel and slag chemistry to reduce chemical attack during service.

4. High Mechanical Strength:High mechanical strength helps the Slide Gate Plate withstand mechanical pressure, sliding movement, and operating loads.

5. Precise Sliding Surface:Accurate dimensions and good surface flatness help maintain reliable contact and sealing between adjacent plates.

6. Good Oxidation Resistance:Suitable refractory formulations provide good resistance to oxidation during preheating and service.

7. Stable Flow Control:Consistent bore dimensions and precise machining contribute to reliable opening, throttling, and shut-off performance.

1.All delivered goods are packaged in strict compliance with the buyer's requirements as well as relevant national and industry standards.
2.Shaped products such as refractory bricks and precast blocks are typically packaged on wooden pallets, wrapped with stretch film for sealing, and secured with plastic-steel strapping.
3.Unshaped refractory materials are packaged in 25-50kg plastic bags, with additional outer protection using bulk bags.
4.Our company provides customized packaging solutions including containers, wooden cases, metal boxes, and moisture-proof marine packaging, fully compliant with both local regulations and corporate requirements in your market.

1.What is the difference between upper and lower Slide Gate Plates?

In a multi-plate slide gate system, individual plates may have different positions and operating conditions depending on the equipment design. The refractory grade, dimensions, bore configuration and machining requirements should therefore be selected according to the specific slide gate system rather than assuming that all plates have identical specifications.

2.What steel grades can be cast using your Slide Gate Plates?

Our Slide Gate Plates can be designed for various steelmaking applications, including carbon steel, low-alloy steel, alloy steel, stainless steel, and special steel. Material selection should consider the chemical composition of the steel and slag as well as casting temperature and sequence.

3. What is the difference between Al-C and Al-Zr-C Slide Gate Plates?

Al-C Slide Gate Plates provide a balanced combination of thermal shock resistance, mechanical strength, and molten steel erosion resistance and are widely used in general steelmaking applications. Al-Zr-C Slide Gate Plates contain zirconia and are designed for applications requiring enhanced resistance to molten steel erosion, slag attack, and wear. The appropriate grade depends on steel grade, casting temperature, slag chemistry, casting sequence and required service life.

4.How can I improve the service life of Slide Gate Plates?

Service life can be improved by selecting a suitable refractory grade, controlling preheating conditions, ensuring correct installation, maintaining proper plate alignment, and matching the plate material to the steel and slag conditions.We can evaluate your operating conditions and recommend a suitable material and design.

5.Are Slide Gate Plates the same as Slide Gate Nozzle?

No. A Slide Gate Plate is a refractory plate installed inside a slide gate system, while a Slide Gate Nozzle generally refers to a nozzle or the complete slide-gate flow-control assembly, depending on industry terminology. They should be treated as separate products when building a refractory product catalog.

6.Can You Manufacture Customized Slide Gate Plates According to Drawings or Samples?

Yes. We can manufacture Slide Gate Plates according to customer drawings, existing samples, dimensions, material specifications or slide gate system requirements.We can also customize plate dimensions, thickness, bore configuration, refractory composition and machining tolerances for standard and non-standard applications.​For replacement orders, simply provide a drawing, sample measurements or existing product specifications. Our technical team can develop a suitable replacement based on your requirements.

7.How are Slide Gate Plates tested before shipment?

Depending on the product grade and customer requirements, testing and inspection can include chemical composition, bulk density, apparent porosity, cold crushing strength, dimensional accuracy, surface flatness, appearance, and other specified physical properties.

8.Can you provide technical support for Slide Gate Plate selection?

Yes. If you provide your current refractory specification and operating conditions, our technical team can help evaluate the material and recommend a suitable Slide Gate Plate grade and configuration.

9.What Is the Difference Between Ladle Slide Gate Plates and Tundish Slide Gate Plates?

Both Ladle Slide Gate Plates and Tundish Slide Gate Plates are used in slide gate systems to control molten steel flow, but their specific design requirements depend on the equipment and operating conditions. Ladle applications are generally associated with higher steel volume and different thermal and mechanical conditions, while tundish applications are related to continuous casting and the specific tundish flow-control system.Therefore, the two types should not be selected simply by application name. Slide GatePlate material, dimensions, bore configuration, working-surface requirements and other specifications should be matched to the actual slide gate system and casting conditions.

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