Labnics Equipment LSTF-100A Instruction Manual

Contents

Labnics Equipment LSTF-100A Instruction Manual Manual pdf 10 page image

- 8 -This may cause significant chemical reactions to occurs eventually leading to affect the lifeof elements. Operator must remember that SiC elements always prefer to have oxidizingatmospheres .This is due to the fact that a protective layer of silica glazing is built up toprotect the elements against further oxidation.Atmosphere Crusilite Globar SG CommentsAir 1575°C 1650°C Must be dry & cleanVacuum 1000°C 1100°C -1300°C Depends on degree andperiod of the applicationNitrogen 1250°C 1400°CExothermic/ 1000°C -1250°C 1250°C -1400°C Very variable, depends on dewEndothermic point and gas compositionGasHydrocarbons 1250°C 1250°C Periodic burn off required2.2.3 MoSi Heating Elements2Kanthal Super is a unique material combining the best properties of metallic and ceramicmaterials. Like metallic materials it has a good heat and electric conductivity and likeceramics it withstands corrosion and oxidation and has a low thermal expansion. It is notaffected by thermal shock and is strong enough to withstand many years of service as aheating element. The resistance of Kanthal Super elements does not change due to ageingeven after having been in operation for a long time at high temperatures. Due to theseproperties a failed element can easily be replaced without the performance of otherelements connected in series being influenced.Kanthal Super elements are extremely brittle. In order to minimize the damagerisk during the transportation 1700°C furnaces are sent without their elementsassembled. Please use an experienced technician while installing the elements.2.3 Refractory InsulationLabnics employs only modern heat insulating materials which can be defined as fiberboards andinsulating bricks .Modern insulation materials are capable of very efficient heat insulation as well asgiving a very low mass .Still at commissioning these materials emit a disturbing gas which may befelt at only first heat up. Most of these discharge takes place during tests at manufacturing stage,even so if any felt during first use, please do not think this to be a problem.2.4. Electrical LayoutLabnics employs electrical components fit for CE regulations during production .Furnaces do haveall necessary safety cut off precautions if there need be.

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