This document summarizes the process of preparing a tundish for continuous casting of steel. It discusses what a tundish is, the different lining layers including insulation, backup, and working linings. It details the steps to deskull, cool, and apply each lining layer. Key tundish furniture like the submerged entry nozzle and stopper are also described. The final steps of preheating the tundish and attached equipment before use in continuous casting are outlined.
SINOM GROUP CO., LTD. is one of the largest manufacturer of copper mould tube in China. Based on customers requirement, we design, manufacture and install the square copper mould tube, round copper mould tube, beam blank, rectangular copper mould tube, diamond type, non-standard type etc.
SINOM GROUP CO., LTD. is one of the largest manufacturer of copper mould tube in China. Based on customers requirement, we design, manufacture and install the square copper mould tube, round copper mould tube, beam blank, rectangular copper mould tube, diamond type, non-standard type etc.
1.This slide is about causes of breakouts during continuous casting of steel and remedies about the same
2. It will help to reduce breakouts problem during continuous casting of steel up to 80%
This presentation covers all the processes and sub-processes undergoing in the newly installed department in Tata Steel ,i.e., LD3 & TSCR.
This presentation deals with the all the problems faced by this department midway through the process, and mainly focussing on "Bleeding Breakout" problem in TSCR shop.
Also an attempt is made to improve the so-called problem by suggesting certain measures at the end.
Brochure from Schiedel. This forms part of our flue and chimney range and can be used with acknowledgement to Schiedel Chimney Systems Ltd. as well as a link to the original source at www.schiedel.com/uk
Schiedel's chimney flue range includes flue systems for residential and commercial applications. A typical flue installation includes steel chimney pipe or mineral pipe or module components from the heat source appliance (a stove, biomass or gas appliance for example) to it's termination point above the roof. Support is required for internal and external chimney systems.
Schiedel specialise in wood burning appliances and flues, which are a renewable way of avoiding constant gas or electricity usage when looking at a secondary heat source. Even heat pumps are problematic with severe temperature drops, so a secondary source is always needed.
1.This slide is about causes of breakouts during continuous casting of steel and remedies about the same
2. It will help to reduce breakouts problem during continuous casting of steel up to 80%
This presentation covers all the processes and sub-processes undergoing in the newly installed department in Tata Steel ,i.e., LD3 & TSCR.
This presentation deals with the all the problems faced by this department midway through the process, and mainly focussing on "Bleeding Breakout" problem in TSCR shop.
Also an attempt is made to improve the so-called problem by suggesting certain measures at the end.
Brochure from Schiedel. This forms part of our flue and chimney range and can be used with acknowledgement to Schiedel Chimney Systems Ltd. as well as a link to the original source at www.schiedel.com/uk
Schiedel's chimney flue range includes flue systems for residential and commercial applications. A typical flue installation includes steel chimney pipe or mineral pipe or module components from the heat source appliance (a stove, biomass or gas appliance for example) to it's termination point above the roof. Support is required for internal and external chimney systems.
Schiedel specialise in wood burning appliances and flues, which are a renewable way of avoiding constant gas or electricity usage when looking at a secondary heat source. Even heat pumps are problematic with severe temperature drops, so a secondary source is always needed.
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Controlling decarburization during hot rolling of rail steelSrikar Shenoy
Decarburization of steel during hot rolling makes the hot rolled products prone to low fatigue life. This is especially true in the case of hot rolled rail steel and automobile leaf springs. The presentation gives a practical technique to substantially reduce decarburisation and ensure uniform hardness of hot rolled steel. Prevention of welding / sticking of billets at high temperature, reduced scale pits on hot rolled material, reduced scaling and decarburisation due to billet over-heating in furnace and slightly increased yield are some of the other benefits enabled by use of this technique.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
NO1 Uk best vashikaran specialist in delhi vashikaran baba near me online vas...Amil Baba Dawood bangali
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Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
2. CONTENTS
What is Tundish ?
Tundish preparation
Deskulling
Tundish lining
Heating cycle of backup lining
Tundish furniture
Spraying of Tundish
SEN fixing
Stopper fixing
3. WHAT IS TUNDISH?
In continuous casting process, Tundish is the last
vessel from which the steel goes through before
entering the mould.
It acts as a buffer between ladle mould for
controlling the casting speed. it also act as a reservoir
of metal during ladle change.
Liquid metal is drain from tundish through sub
merge entry nozzle.
It helps in segregation of non-metallic inclusions
and there for yielding high quality products.
4. TUNDISH PREPARATION
TUNDISH FROM CASTER
DESKULLING, COOLING
BACK UP LINING
WORKING LINING
SPRAYING OF TUNDISH
SEN FIXING
MBS FIXING
TUNDISH READY FOR USE
5. DESKULLING
When Tundish is taken out from CSP caster, then
it goes for 4hrs cooling.
After that it is shifted to tilter stand for deskilling.
The spray mass and the Tundish skull is falling
down from Tundish because of its self weight and
thermal shock.
If the skull is not falling dawn from the tundish
then we use pusher for skull removal.
After deskulling the tundish is ready for cooling.
The cooling fan is set above the tundish.
6.
7. TUNDISH LINING
There are 3 types of lining in tundish
1. Insulation lining
2. Tundish backup lining
3. Tundish working lining
8. BACKUP LINING
Empty steel shell :- the shell of tundish must be clean
from any residual debris. Any mechanical repair required
must be done. The vent holes in the shell to be cleaned
for steam to escape during tundish heating.
Fixing of insulating board :- insulating board
(1000×500×35 mm) are fixed along the tundish inner
surface with the sticking paste/ bituminous paint.
Anchoring :- anchors are to be welded to the shell and
place at equal distance from one another (v=250 and
h=500 mm) to provide support to the permanent lining.
Anchors are coated with bituminous paint to allow for
differential expansion between the steel and castable
lining.
9. Insulation lining
Both bottom and side wall = 35 mm
Material = ceramic fibre boards (1000×500×35 mm)
Backup lining
Bottom = 190mm
Side wall = 180mm
Material = 70% low cement cast able
Working lining
Both Bottom and side wall = 45 mm
Material = 85% MgO based spray mass
10. Mixing of LC 70% Al2O3 castable and water :- the
castable is to be mix with water in a mixer
Casting :- the prepared batch must be casted with in
(15-20 min) and it is well settled with help of niddle
vibrators.
Bottom thickness is 190mm and side wall is 180 mm.
Life of backup is about 620 heats.
11. HEATING CYCLE OF BACKUP LINING
Pre-heating :- total pre-heating schedule for the tundish
back-up casting is 72 hrs and it heating schedule given
below.
1 to 6 hr increase gradually 25˚c per hr
7 to 30 hr shocking at 150˚c
31 to 40 hrs increase gradually 25˚c per hr
40 to 51 hrs shocking at 400˚c
52 to 63 hrs increase gradually 25˚c per hr
63 to 72 hrs shocking at 800˚c
Now tundish is ready for cooling
When temp. Is reach at 80 to 90˚c tundish is ready for
spraying.
12. WORKING LINING
Tundish shifting from tilter stand to cooling stand.
Tundish cooling around 3 to 4 hrs.
Spraying temp. 70 to 90˚c.
Tundish shifting from cooling stand to spray stand.
Debris cleaning inside the tundish.
Fix the new furniture.
Apply water mixed conventional castable.
Side wall patching to be done if it required.
Then spray the tundish.
13. TUNDISH FURNITURE
Turbo
Dab
Well block
SEN (Sub-merge Entry Nozzle)
Mono block stopper
Tundish gas diffuser (TGD)
14. TURBO
A specially shaped refectory material which is placed
where the stream of the steel hits at the bottom of
the tundish to make the bottom more erosion
resistant, raise sides to redirect the stream in an
upward direction instead of allowing it to splash
around, thus providing a good separation of the
steel. And act as a flow control device.
15. TUNDISH GAS DIFFUSER
During casting, a controlled flow of inert gas is
introduced to the TGD, forming a continuously
renewed rising curtain of tiny gas bubbles through
which the steel flow passes..
The diffuse gas curtain enhance inclusion removal
and improves thermal homogeneity of the steel bath
in the tundish.
16.
17. SPRAYING OF TUNDISH
Ensure temperature at the back up lining is around 70 to
90˚c.
Fix the furniture.
Then spray the material in 3 layer with 85% MgO.
Thickness of each layer is 15 mm. Water required 20%.
After each layer leave the tundish for 20 min for steam to
go out.
Check and ensure that required thickness is achieved
with the tool.
Make vent holes in the lining with the help of same tool.
Once the spray is completed, leave the tundish for air
drying for 30 to 45 min and then 3 hrs. In tundish drier
at 350˚c.
18.
19. SUBMERGED ENTRY NOZZLE
Types of SEN : R3 & wider
ISO statically pressed alumina graphite submerged
entry nozzle produced for protection of the tundish
and the mould.
SEN top diameter : 160 to 162 mm
SEN bell diameter : 130 to 132 mm
SEN length : 1120 mm
Material : 90% high alumina
20. MONO BLOCK STOPPER
This is an alumina graphite
stopper mechanism to
control the flow of steel
from tundish to mould.
MBS has the following
properties :-
High resistance to the thermal
shock
Resistance to physical and
chemical erosion
Suitable for all grades of steel
Length – 1540 mm,
diameter – 125 mm
21. SEN FIXING
Before SEN fixing preheat the split ring for quick setting of
alumina mortar.
The high alumina mortal applied outside of split ring in 6 mm
thickness.
Place tundish jack trolley below the tundish.
Then place the SEN vertically on jack trolley.
Pass the SEN into the tundish from bottom of the tundish by
lifting the jack trolley & hold it in that position.
Then applied mortal on the SEN bell portion.
After that ensure that SEN is vertical and measure the SEN
length below the tundish (845 mm)
Then fill the ramming mass super 3000 (high alumina castable)
And then apply spray mass in it.
22. STOPPER FIXING
Place the tundish cover on tundish after SEN fixing.
Fix the stopper rod mechanism.
Then fix the stopper with SR, and check that stopper is
properly sit in SEN upper portion.
The tundish now is ready for transport to the casting
platform. At the casting platform before starting the cast
the tundish must be preheated at 1125˚c for 90 min.
SEN is also preheated at 1125˚c for 90 min with argon
gas.
Now tundish is ready for cast.
Life of MBS and SEN is 24 hrs.
23. PREPARED BY :-
MAYUR KORADIYA 126340321059
SANDEEP YADAV 136340321060
GUIDED BY :- VIVEK GANATRA
ASST. MANAGER CSP
CASTER