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<\/a><\/figure>\n\n\n\nInduction Furnaces (CIF)<\/h2>\n\n\n\n
This is the\nmost used furnace for the foundry industry. The furnace is used to produce many\ndifferent alloys; e.g. gray iron, ductile graphite iron, steel, copper and aluminum\nalloys.<\/p>\n\n\n\n
The\nstirring effect of a CIF oven makes it an ideal unit for alloy manufacturing.\nThe atmosphere can be controlled, thus the metallurgical losses can be\nminimized. The industry is currently investing in rapid melting mid-range CIF\nheaters.<\/p>\n\n\n\n
H\u00f6gan\u00e4s Borgestad and Sibelco have a cooperation and extensive experience with refractory linings for CIF furnaces. We can offer a complete installation with monolithic insert which includes all heat-resistant materials for the furnace (melt lining, prefabricated block, coil cement, lid, laundersystem, etc.) for many different adaptations and operating conditions.<\/p>\n\n\n\n
In the\nfoundry industry, our FinMix is; Dry Vibratable Mixes (DVMs), based on our\nunique Finnish microcrystalline quartz, have become standard for CIF ovens. We\ncan also offer neutral and basic DVMs, adapted to different melting processes.<\/p>\n\n\n\n
H\u00f6gan\u00e4s Borgestad has a great focus, and attention to, the installation process and has developed special installation equipment together with our suppliers.<\/p>\n\n\n\n There are\nseveral types of induction heated channel \u2013 type furnaces, depending on the\nalloy to be produced, for example:<\/p>\n\n\n\n The main\ntype of furnaces are holding and casting furnaces. The capacity of tunnels can\nhold up to 150 tons of iron. Refractory lining can reach a service interval of\n5 years, with replacement of the induction lining at shorter intervals. Casting\nfurnaces, processed with air or nitrogen, can process units with weight up to\n20 tons, but 5 to 10 tons are the most common. The most common adaptations are\nfor melting ductile iron and gray iron.<\/p>\n\n\n\n Channel-\ntype furnaces can be used for melting, heat storage and casting of copper.<\/p>\n\n\n\n The\ninductor is the critical component of a Channel- type furnaces since it is the\nheating element throughout the furnace. For furnaces intended for both iron and\ncopper smelting, the inductor must be single or double loop, or core free.<\/p>\n\n\n\n The\nchemistry of various alloys, and the increasing demands on production volumes,\nhave affected the development of our products and concepts.<\/p>\n\n\n\n H\u00f6gan\u00e4s Borgestad concept for lining channel furnaces is based on knowledge and references from a long collaboration with leading foundries. This knowledge is not only based on refractory materials. We can offer solutions for all furnaces with a complete product area consisting of safe, neutral and basic products from castables, gunning materials, self-flowing, dry vib. and vibration materials. Furthermore, we offer expertise to the actual melting process, and of course the installation and maintenance of furnace linings. Refractory material and knowledge are available for all types of iron and copper melting processes.<\/p>\n\n\n\n The crucibles\nare primarily used for transporting liquid metal from furnace to mold (ductile\niron is often treated in the ladle). Accuracy in the execution and operation of\nthe ladle is important regardless of whether it is a ladle only for\ntransportation or also for the treatment of ductile iron.<\/p>\n\n\n\n H\u00f6gan\u00e4s Borgestad can offer a complete range of products and solutions for all alloys and applications. Focus on heat loss and lower energy consumption. With a focus on the importance of labor costs, an efficient and reliable ladle lining can provide significant savings.<\/p>\n\n\n\n Selection of refractory for ladles depends on several parameters; ladle size, shape, alloy, operating temperatures and practice, and of course metallurgical process. H\u00f6gan\u00e4s Borgestad can therefore deliver a wide range of solutions.<\/p>\n\n\n Ladles can be lined with refractory bricks or\nrefractory castables. In most cases we recommend Bricks as the products are pre\ndried, and therefore provide a more stable end result. Castables are easier to install, but must have\ncontrolled drying and heating.<\/p>\n\n\n\n We can\noffer:<\/p>\n\n\n\n<\/a><\/figure>\n\n\n\nChannel \u2013type Induction furnaces<\/h2>\n\n\n\n
<\/a><\/figure>\n\n\n\nCrucibles \/ Ladles<\/h2>\n\n\n\n
Different solutions for\ndifferent needs<\/h3>\n\n\n\n
\n\n
\n\t \n
\n<\/th>Benefits\t<\/th> Equipment \/ requirements<\/th>\n<\/tr>\n<\/thead>\n \n\t Refractory Castable<\/strong><\/td> Good abrasion resistance\t<\/td> Well suited mixer, mold, vibrator and dryer.
\nTime for installation and drying.<\/td>\n<\/tr>\n\n\t Precast \/ Bricks<\/strong><\/td> No use for mixer, mold, vibrator and dryer.
\nQuick installation, very fast installation.
\nVery good abrasion resistance.<\/td>No special requirements.<\/td>\n<\/tr>\n \n\t Self-flow castable<\/strong><\/td> No use for vibrator.
\nGood wear resistance.
\nFaster installation than with standard castable<\/td>Applicable mixes and shapes.
\nTime to dry.<\/td>\n<\/tr>\n\n\t Self-flow No cement castables\t<\/strong><\/td> No use for vibrator.
\nGood wear resistance.
\nFaster installation than with standard castables, reduced dry and curing time<\/td>Applicable mixes and shapes.
\nQuick dry and reduction of down time<\/td>\n<\/tr>\n\n\t Ramming\t<\/strong><\/td> No use for mixer and vibrator.
\nQuick drying.
\nGood resistance to thermal shock.<\/td>Pneumatic ramming equipment and molds.
\nTime to install.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n<\/div>\n\n\n\n<\/a><\/figure>\n\n\n\nBricks in Ladles<\/h2>\n\n\n\n