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Tundish Metering Nozzle

Your Professional Tundish Metering Nozzle Manufacturer!

Anyang Changtai Silicon Industry Co., Ltd. has been focusing on the research and development and production of high-end zirconium oxide products for more than ten years. The company is equipped with advanced zirconium oxide product production lines to ensure the stability and reliability of product quality. Our product line covers tundish metering nozzles, zircon inlays, replacement nozzles, sliding gates, cored wires and ferrosilicon, etc.

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Why Choose Us

Quality Control

Our products strictly follow the quality management system certified by ISO9001, ISO14001 and SGS to ensure compliance with the highest quality standards.

Customized Service

We provide customized services for zirconium products and are committed to providing customers with tailor-made product solutions.

Advanced Equipment

The company is equipped with four 100-ton presses, two high-temperature tunnel kilns and an automatic press, with an annual production capacity of 1 million to 1.5 million units.

Sales Market

Our products not only cover the domestic market, but also are exported to overseas markets, including Russia, Southeast Asia, the United States, Brazil and Malaysia.

Customized Tundish Metering Nozzles

We provide customized tundish metering nozzle manufacturing solutions to meet your needs. Customizable options:

Material:

We provide different contents of zirconium oxide, which can be customized according to requirements.

Color:

Can be customized according to requirements.

Shape:

Can be customized according to requirements.

Size:

Can be customized according to requirements.

Connection method:

We support flange, thread and other connection methods, which can be customized according to requirements.

Tundish Metering Nozzle Physical Properties

Zirconia Inserts
	CT-PMD1	CT-PMD2	CT-PMD3
Physical Properties
Apparent Porosity (%)	11-12	8-10	6-8
Bulk Density (g/cm3)	≥4.9	≥5.2	≥5.3
Chemical Analysis(%)
ZrO + HfO	≥94.0	≥95.5	≥96.0
SiO	1.1	0.23	0.5
TiO2	0.2	0.2	0.1
Fe2O3	0.5	0.05	0.05
Al2O3	0.4	0.42	0.1
CaO	0.2	0.15	0.15
MgO	2.5	2.4	2.4
Na2O	0.03	0.01	0.01

Types of Tundish Metering Nozzle

Alumina-carbon tundish metering nozzle with zirconia insert

Alumina-carbon nozzle with zirconia insert is usually used in medium tundish. Due to its shape and design, this nozzle shows high accuracy and safety factor in casting. This nozzle is assembled through the mortar inside the wellblock.

Assembled tundish metering nozzle

Due to the shape of the body, there is no need to use a well block in this type of nozzle. The insert of this nozzle is produced with different amounts of zirconia, which makes it possible to use it for single-melting and multi-melting applications.

High sequence tundish metering nozzle

The high sequence nozzle is suitable for melting conditions in the number of times and with working hours of more than 6 hours. The strength and thermal resistance of the body as well as the stability and dimensional accuracy of the insert are among the features of this nozzle, which makes it possible to use it for heavy and semi-heavy units.

Benefits of Tundish Metering Nozzles

● Use temperature up to 2400℃

● High density

● Low thermal conductivity (20% than of alumina)

● Chemical inertness

● Resistance to molten metals

Ionic electrical conduction

Wear resistance

High fracture toughness

High hardness

Production Process of Tundish Metering Nozzle

1. Ingredients. Accurately weigh various zirconia particles and powders according to a certain proportion, and the weighing error (mass fraction) should generally not exceed 0.5%.

2. Premix. The particle gradation is strict and the fine powder content is high. In order to make the powder, especially the additives with less content, mix more uniformly.

3. Mixing. In order to mix various raw materials and binders uniformly, forced mixing equipment is often used for mixing.

4. Forming. Generally, machine press is used for molding. The length-diameter ratio of the tundish metering nozzle is generally greater than 2, so double-sided pressure molding is generally adopted during molding, which can improve the density of the green body.

5. Dry. Before firing, it is necessary to discharge the moisture introduced by the binder during mixing, so that the green body has a certain strength, which is convenient for kiln loading and firing.

6. Firing. The metering nozzle blank is loaded into a high temperature kiln, and the blank is sintered according to a certain heating system. The maximum firing temperature depends on the tundish nozzle material, generally greater than 1700℃.

7. Pick. The inner hole of the tundish metering nozzle core is the main object of inspection.

8. Bonding assembly. The nozzle core and nozzle jacket are bonded with fire clay, then dried, and ready to be transported to the steel mill for use.

9. The surface of the quick-change nozzle generally needs to be painted with skateboard oil to facilitate smooth sliding.

Precautions for Using the Tundish Metering Nozzle

During the use of the zirconia tundish metering nozzle, as the inclusions in the steel slag and molten steel penetrate into the pores at high temperature and react with the impurities and stabilizers in the tundish metering nozzle, the tight bond between the zirconia particles is destroyed, and the stable phase is destroyed.

The transition from the high temperature phase to the low temperature phase occurs due to the reduction of the stabilizer. The volume expansion caused by the phase transformation weakens the bond between the particles, which leads to the rupture between the particles in the zirconia tundish metering nozzle, and the molten steel enters the nozzle. The diameter keeps increasing.

The expansion of the inner diameter of the nozzle will lead to an increase in the flow of molten steel flowing into the mold through the nozzle, and the pulling speed of the slab will also increase accordingly, which will easily cause the slab to break and stop pouring, affecting the normal production process.

Lead Time

Quantity

(pieces)

1-10000

10001-20000

20001-50000

＞50000

Lead time

(days)

To be negotiated

Packaging&Delivery

Packaging Details	Wooden Box
Port	According to customer needs

FAQ

Q: What is a tundish metering nozzle?

A: A tundish metering nozzle is a specialized refractory component used in the continuous casting process of steel, designed to precisely control the flow rate of molten steel from the tundish (a holding vessel) into the casting mold by regulating the outlet diameter, ensuring a consistent and controlled casting speed; it is typically made from zirconia ceramic due to its excellent erosion and thermal shock resistance properties.

Q: How does a tundish metering nozzle affect the quality of the cast product?

A: It helps in maintaining a uniform and controlled flow of molten metal, which in turn improves the microstructure and mechanical properties of the final product.

Q: How is the size of a tundish metering nozzle determined?

A: The size depends on factors like the casting speed, the type and size of the mold, and the amount of molten metal to be delivered.

Q: Can the design of the tundish metering nozzle be customized?

A: Yes, it can be customized based on specific requirements of the casting process.

Q: How does the shape of the tundish metering nozzle influence the flow characteristics?

A: Different shapes can affect the velocity, turbulence, and distribution of the molten metal flow.

We're well-known as one of the leading tundish metering nozzle suppliers in China. If you're going to buy high quality tundish metering nozzle made in China, welcome to get quotation from our factory.

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