Plastertandish
To protect Tundish permanent layer from corrosion, a primer mass layer with 30 mm of thickness will trowelling on it, this stage name issacrificial or work layer. It is important that the liner is in direct contact with the molten steel. The main task of this layer, is removing the remaining liquid, without damage the permanent layer. The liner also has the task of preventing heat loss when transferring the liquid molten steel to the casting line responsible. That is why the mass should be low heat transfer.
chemical Analysis and Application
| AFS.NO | Hot Tensile Strength | Code | Application |
| 25-35 | 26(kg/cm2) 15-20 10-15 |
RT40H RT40M RT40L |
1-Where high strength and desirable passing of gas is needed 2-Casting of Steel 3-Casting of large pieces of cast iron |
| 40-50 | 26(kg/cm2) 15-20 10-15 |
RT50H RT50M RT50L |
|
| 50-60 | 26(kg/cm2) 15-20 10-15 |
RT6050H RT6050M RT6050L |
1-Where high strength and desirable passing of gas is needed 2-Casting of Steel 3-Casting of large pieces of cast iron and aluminum |
| 60-70 | 26(kg/cm2) 15-20 10-15 |
RT60H RT60M RT60L |
1-Where high strength and high smoothness of surface and desirable passing of gas is needed 2-Casting of large and medium-sized cast iron and aluminum 3-Nonferrous and color Metals |
| 95-105 | 26(kg/cm2) 15-20 10-15 |
RT90H RT90M RT90L |
1-Where high smoothness of surface is needed 2-Shell molds 3-Nonferrous and color Metals 4-Casting of aluminum and cast iron with the smaller size |
Oxygen lancing resistant