Magna Industrials Ltd

in Korean/번역문

Crucibles, Transfer Ladles and Fired Refractory Shapes

For crucible, transfer ladles and fired refractory shape material selection, Magna Industrials Ltd offer the following information as a general guide to obtain optimum performance.  Each material is designed specially for our customer's demands; if a new mix or material is preferred, Magna will be pleased to work with our customers to achieve the best result for any application.

Alumina

A high purity alumina mix, it has good resistance to both acidic and basic slags.  It is the workhorse for a wide range of alloys and melting applications; commonly used for air melting furnaces but can also be used in a vacuum melting application.  Maximum service temperature 1800°.

Chrome Alumina

The small addition of chrome in the alumina improves the resistance to slag attack and greatly improves the longevity of refractory life.  Ideal for air melting applications, but not recommended for vacuum melting applications.  Maximum service temperature 1800°C.

Magnesia Stabilised Zirconia

Stabilised with magnesia to prevent volume changes, it has an excellent resistance to acidic slags.  It is unaffected by Ni, Mo, Al, Fe, Pb and has good resistance to Zr and Be.  Widely used in vacuum melting applications for the melting of superalloys, this material exhibits superior resistance to thermal shock and erosion.  It has low thermal expansion properties.  Maximum service temperature 1900°C.

Lime Stabilised Zirconia

Stabilised with lime to prevent volume changes, ideal for high temperature applications and for use with platinum group metals.  Our lime stabilised zirconia products are specially designed to counteract the glassy or siliceous slags produced when melting platinum alloys.  It has excellent thermal shock properties and displays a superior resistance to spalling and erosion.  Maximum service temperature 2000°C.

Magnesia

Has very good resistance to basic slags and is widely used in vacuum melting applications for the melting of superalloys.  It is non-wetted by Ni, Co and Fe based alloys.  Less dense than zirconia and preferred by some customers for X-ray analysis.  Maximum service temperature 1700°C.

Mullite

This material has excellent thermal shock properties; it has good abrasion and wear resistance with most alloys.  It is not recommended for acidic slags and elevated temperatures.  An ideal material for furnace bricks, element carriers and parts demanding good hot loading durability.  Maximum service temperature 1700°C.

Zircon

Contains high strength and good resistance to thermal shock properties due to a dense structure and increased silica content, good resistance to acidic slags and is commonly used for non-ferous and precious metal melting applications.  Maximum service temperature 1650°C.

Silicon Carbide

An extremely dense material with superb thermal shock properties.  Highly resistant to metal penetration and non-wetted by non-ferrous alloys.  The workhorse for non-ferrous metals in air melting applications.  Maximum service temperature 1400°C.

Fused Silica

A light material providing excellent thermal shock properties and extreme volume stability at elevated temperatures.  Commonly used for 'one shot liners' with superalloys in a vacuum furnace application.  Maximum service temperature 1650°C.

For cleaner melts and less inclusions, we offer an assortment of alumina and mullite transfer ladles, capacities ranging from 30kg to 200kg.  All our ladles have built in spouts and baffles.