BOTTOM POURING STOPPER LANCES
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New Monolithic Lance for Bottom Pouring Operations
Sharadaa has successfully introduced the New Monolithic Lance for Bottom Pouring operations. These lances have been developed to replace conventional bottom-pouring sleeves, which are consumable in nature.
The monolithic lance is not only high performing but also ensures durability during operations. These lances have demonstrated high leverage on performance to its cost.
Further its durability eliminates the risk of failures in bottom pouring sleeves.
Problem Statement
- Refractory used in stopper rod give only one heat
- Stoppage of casting due to breakage of sleeves
- High refractory inclusion
- Safety problems faced
- More manpower for stopper rod preparation
- Higher waste generation
Customer Requirement
- Minimum 20 heats
- Uninterrupted Castings
- 100 % safety
- Reduction of casting rejections
Sharadaa Product Selection and Performance
- Ladle Slag Analysis
- Developed various types of Mullite bonded castables tested for slag corrosion
- Conducted thermal shock resistance testing
- Based on the values the best was selected
- Steel rod obtained from the customer for 15 MT Ladle
- Casting by Sharadaa Engineers as per SOP including Heat Curing
- Graphite stopper Head was fixed at the customer end
- Ladle bottom pouring operations conducted into 5 various moulds by lifting the stopper rod
- Health of stopper rod was inspected after every heat
- Minor damages were found at the end of 20 circulations
Features & Benefits
- A monolithic Lance made in Refractory covering the Steel Rod duly assembled with stopper at bottom.
- It eliminates potential inclusion arising out from sleeves usage
- It is a readymade Shape and does not require Preparation at Foundry Shop Floor
- The Lance is reusable for Multiple Pouring and Multiple Ladle sequencing.
- Easy to maintain and Store for Repeat Usage in Operation.
- Eliminates huge inventory of Refractory Sleeves and saves storage space.
- Ideal for frequently circulating bottom pouring casting
- Eliminates non productive manpower / contract activity at shop floor
- Cost performance ratio is significantly impressive to manufacturing process