Tundish Refractory Nozzle Composited with 96% Zirconia Insert and 75% Alumina Outer

Product Description

Tundish Refractory Nozzle Composited with 96% Zirconia Insert and 75% Alumina Outer

Product Description

The tundish nozzle is suitable for continuous cast tundish open cast steel. The zirconium insert is made of high-purity zirconia, which is formed by high-pressure molding and sintering at high temperature. The outer is made of corundum and high-quality aluminum vanadium. It is formed by high pressure molding and baked at low temperature. The two are bonded with corundum mud, and the product's corrosion resistance and thermal shock stability have reached the domestic advanced level, which can fully meet the needs of various billet continuous casting. Tundish upper nozzle It is located within the tundish lining and conveys steel to the controlling exchangeable nozzle,which determines the steel flow. The stationary nozzle must be capable of withstanding long sequence times. Our Upper nozzle that incorporates a ultra-high densityLKZN-M or LKZN-H insert. The insert provides excellent erosion resistance and can provide extended casting sequence times. The lower surface of the stationary nozzle is ground to exacting tolerances to ensure maximum surface contact between the two nozzle components. Tundish lower nozzle It is located within an assembly that is fixed to the bottom of the tundish.The design of the exchangeable nozzle can vary according to the system manufacturer. We supplying a range of zirconia inserts and composite nozzle designs for the exchangeable metering of steel. Zirconia inserts can be supplied for on-site assembly into metallic holding blocks where cementing, grinding, size banding and on site drying are required prior to use. It was manufactured by both cast process of fine grained alumina method or presse process. 

TUNDISH NOZZLE used for the continuous casting of steel. 
Products used in Tundish can be offered to you as follow:
Tundish metering nozzle
Non swirling tundish nozzle
Tundish upper nozzle
Tundish lower nozzle
Tundish slide plate
Quick-exchange tundish nozzle
Ladle shroud
Subentry nozzle/ submerged entry nozzle
Monoblock stopper


Upper nozzle(Stationary nozzle)
It is located within the tundish lining and conveys steel to the controlling exchangeable nozzle,which determines the steel flow. The stationary nozzle must be capable of withstanding long sequence times.
Our Upper nozzle that incorporates a ultra-high densityLKZN-M or LKZN-H insert.
The insert provides excellent erosion resistance and can provide extended casting sequence times.The lower surface of the
stationary nozzle is ground to exacting tolerances to ensure maximum surface contact between the two nozzle components.

Lower Nozzle (EXCHANGABLE)
It is located within an assembly that is fixed to the bottom of the tundish.The design of the exchangeable nozzle can vary according
to the system manufacturer.
We supplying a range of zirconia inserts and composite nozzle designs for the exchangeable metering of steel. 
Zirconia inserts can be supplied for on-site assembly into metallic holding blocks where cementing, grinding, size banding and on site drying are required prior to use.
It was manufactured by both cast process of fine grained alumina method or presse process.

Product Parameters

 

Outer: Al2O3
Al2O3	C	Apparent porosity	Bulk density	Compressive strength
(% minm)	(% minm)	(% max)	(gm./cc minm)	(MPa minm)
75	4	8	2.95	60
80	4	7	2.95	60
94	-	15	2.95	60

Zirconia Insert of Tundish Upper Nozzle
ZrO2+HFO2	Apparent porosity	Bulk density	C.C.S	Refractoriness
(% minm)	(% max)	(gm./cc minm)	(MPa minm)	(ºC minm)
65	23	3.60	80	1790
70	23	3.70	80	1790
80	23	3.90	80	1790
84	23	4.00	80	1790
93	21	4.50	100	1790
94	21	4.90	100	1790

Packaging & Shipping

1. Strong carton+Plywood case
2. Or packing according to customer's requirements

Application

The tundish metering nozzle is mainly used for continuous casting of tundish billets, blooms, rectangular billets, and small slabs for pouring steel.