Tundish Upper Nozzle
Application Industry: Refractories for Steel Industry
Application Equipment: Continuous Casting Machine Tundish Steel Flow Control
Size: Custom tundish upper nozzle geometry per continuous casting machine design (free engineering on request)
Products Overview
Our Tundish Upper Nozzle is a high-performance refractory product engineered for continuous casting machine tundish steel flow control. We can provide ordinary, quick exchangeable, and gas purging upper nozzles. The bowl part of the nozzle is available with Al2O3-C, MgO-C, and Spinel-C based material, and the main body is Al2O3-C based. The product family is engineered for stable molten steel flow control, good corrosion resistance, and thermal shock resistance for continuous casting machine tundish service.
The Tundish Upper Nozzle product family is offered in three engineering-proven SK chemistry grades with two part systems (Body and Bowl). The CH-SK-L70 grade (Al2O3-C based) features Al2O3 content minimum 40%-72% for general tundish service. The CH-SK-MA55 grade (MgO-C based) features MgO content minimum 10%-65% for demanding tundish service. The CH-SK-X70 grade (ZrO2-C based) features ZrO2 content minimum 50%-60% for highest demand tundish service. All three grades deliver Bulk Density minimum 2.35 to 3.10 g/cm³, Apparent Porosity maximum 17% to 18%, Cold Crushing Strength minimum 20 to 30 MPa, Modulus of Rupture minimum 5 to 10 MPa, and Thermal Shock Resistance minimum 5 cycles.
Sourced from our Xinmi City, Zhengzhou, Henan, China facility, each Tundish Upper Nozzle grade is engineered to ASTM, GB/T, and ISO refractory standards. For an overview of the broader catalogue, see the Refractories for the Steel Industry category, or contact our technical sales team for a free consultation against your refractory drawing.
Product Features
Features:
- Manufactured from Al2O3-C, MgO-C, and ZrO2-C based formulations with high-purity raw materials and phenolic resin binder
- Engineering-proven bowl part available in Al2O3-C, MgO-C, or Spinel-C based material according to steel grade type
- Ordinary, quick exchangeable, and gas purging types available for different tundish service requirements
- Main body is Al2O3-C based for stable molten steel flow control and thermal shock resistance
- Three SK chemistry grades covering Al2O3-C, MgO-C, and ZrO2-C based materials for matching different tundish steel grade service
Product Specification
Tundish upper nozzle is engineered per buyer’s continuous casting machine design. Custom chemistry and geometry available on request.
We can provide ordinary, quick exchangeable and gas purging upper nozzles. The bowl part of the nozzle is available with Al2O3-C, MgO-C and spinel-C based and the main body is Al2O3-C based.
| Brands | CH-SK-L70 | CH-SK-L70 | CH-SK-MA55 | |||
|---|---|---|---|---|---|---|
| Items | Al2O3-C | MgO-C | Spinel-C | |||
| Part | Body | Bowl | Body | Bowl | Body | Bowl |
| Al2O3 (%) | ≥ 40 | ≥ 72 | ≥ 40 | – | ≥ 40 | ≥ 50 |
| C+SiC (%) | ≥ 18 | ≥ 10 | ≥ 18 | ≥ 11 | ≥ 18 | ≥ 11 |
| MgO (%) | – | – | – | ≥ 65 | – | ≥ 10 |
| Bulk density (g/cm³) | ≥ 2.35 | ≥ 2.80 | ≥ 2.35 | ≥ 2.65 | ≥ 2.35 | ≥ 2.70 |
| Apparent porosity (%) | ≤ 18 | ≤ 17 | ≤ 18 | ≤ 17 | ≤ 18 | ≤ 17 |
| Cold crushing strength (MPa) | ≥ 22 | ≥ 25 | ≥ 22 | ≥ 20 | ≥ 22 | ≥ 25 |
| Modulus of rupture (MPa) | ≥ 7 | ≥ 8 | ≥ 7 | ≥ 5 | ≥ 7 | ≥ 7 |
| Thermal shock resistance (cycle) | ≥ 5 | ≥ 5 | ≥ 5 | |||
Note: Seven performance parameters specified: Al2O3 content, C+SiC content, MgO content, Bulk Density, Apparent Porosity, Cold Crushing Strength, Modulus of Rupture, and Thermal Shock Resistance. Three SK chemistry grades engineered for tundish upper nozzle service in three material systems: Al2O3-C, MgO-C, and Spinel-C. Each grade is engineered for two parts: body and bowl. For project-specific chemistry and geometry, contact CH Refractories engineering.
Product Applications
Tundish Upper Nozzle is a high-performance refractory product manufactured from Al2O3-C, MgO-C, and ZrO2-C based formulations with high-purity raw materials and phenolic resin binder, engineered for continuous casting machine tundish steel flow control. The product family is available in ordinary, quick exchangeable, and gas purging types. The bowl part of the nozzle is available with Al2O3-C, MgO-C, and Spinel-C based material, and the main body is Al2O3-C based. The product family is engineered for stable molten steel flow control, good corrosion resistance, and thermal shock resistance.
Application Industry: Refractories for the Steel Industry and the broader Metallurgical Industry.
Target Equipment: Continuous Casting Machine Tundish Steel Flow Control of small, medium-size, and large continuous casting machines in steelmaking operations.
Specific Application Zones: The CH-SK-L70 grade (Al2O3-C based, Al2O3 content minimum 40%-72%) is the standard variant for general tundish service. The CH-SK-MA55 grade (MgO-C based, MgO content minimum 10%-65%) is the magnesia variant for demanding tundish service. The CH-SK-X70 grade (ZrO2-C based, ZrO2 content minimum 50%-60%) is the zirconia variant for highest demand tundish service. All three grades deliver Bulk Density minimum 2.35 to 3.10 g/cm³, Apparent Porosity maximum 17% to 18%, Cold Crushing Strength minimum 20 to 30 MPa, Modulus of Rupture minimum 5 to 10 MPa, and Thermal Shock Resistance minimum 5 cycles.
CH Refractories is a Tundish Upper Nozzle manufacturer in China, Henan, Zhengzhou. The complete Tundish Upper Nozzle product family is manufactured in our Xinmi City, Zhengzhou, Henan, China facility to ASTM, GB/T, and ISO refractory standards. Each batch is supported by free consultation, on-site technical support, and a dedicated engineering team serving Refractories for the Steel Industry customers across the global iron and steel value chain.
