Furnaces For chemical heat treatment

www.lac.cz

> Lineconfiguration ___________________________ 04/05

> LineappLication _________________________________ 05

> advantagesoftHeLine __________________________ 06

> caMBurisingandHardeningfurnace ___________ 07

> teMperingfurnace ______________________________ 08

> nitridingfurnace _______________________________ 09

> HardeningBatHs–oiL,water,poLyMer,saLt ____ 10

> wasHers _________________________________________ 11

> saLtregenerator _______________________________ 11

> processMediadistriButor ______________________ 12

> ManipuLatorandBatcHsite _____________________ 13

> controLsysteMs ________________________________ 14

> tecHnoLogicaLprocess ________________________ 15

> cHaMBerfurnacewitHgastigHtretortpKr ___16/17

> reconstruction _________________________________ 18

> HeatingeLeMents ________________________________ 18

summary

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LAC Ltd.withitsregisteredofficeinrajhradnearBrnohasbeenfor15yearssuccessfullydealinginmanufactureoffurnacesanddryersfornumeroustechnologicalapplicationssuchas:

>mechanicalengineering >foundries >electrotechnicalindustry >plasticandrubberindustry >custom-madehardeningshops >research >laboratories >stomatolo-gy >jewel-making >ceramicindustry >education >glassindustry >artceramic >chinaproduction

productionrangeofLAC Ltd.fordomesticandforeignmarketsdoesnotconsistofacomplexlineorserial-madefurnacesanddryersonly,butitmeetsalsorequirementsintheareaofnon-typicaldesignoffurnacesaccordingtothecustomer’sspecificrequirements.

dynamicdevelopmentofthecompanyisillustratedbythecur-rentnumber250employees,registeredcapitalof12millioncZK,25000m2ofproduction,storageandadministrativepremisesand8,000furnacesmanufacturedtodate.

inoursalesdepartmentwearereadytomeetyourrequire-mentsandprovidequalifiedadviceonselectionofthemostsuitablefurnaceforanyapplication.ourownteamofserviceengineersprovidingmaintenanceofourproductsisamatterofcourse.

Besidesmainproductsweofferalsosupplyofheatingele-ments,refractoryandinsulationmaterials,controlelements,refractoryshapedpiecesandimplementationofreconstruc-tionsoffurnaces,heatingsystemsandswitchboards.

LAC comPany ProFile

> Process media distributor

Line conFiguration

Offered Modules:

> carburizingandhardeningfurnace

> Hardeningbath> washer> processmediadistributor> Manualmanipulator

> Batchsite

Line extension:

> temperingfurnace> saltseparator> nitridingfurnace

> Washer

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> hardening bath

thelineissuitableforheatandchemical-heattreatmentofmetalparts.itissuitablefortreatmentofthoseparts,inwhichisqualityofsurfaceveryimportant.thechargeisduringtreatmentandtransportingfromfurnacetohardeningbathunderprotectiveatmosphereallthetime.thisatmospherenotallowsingressaroundatmospheretochargeandinhibitingcreationofclinkerinsurfaceofpartsso.allprocessisautomatic,sothatrequiresminimalinterventionsfromstaff.thelinecanbeusedforthefollowingtypesofchemicalthermaltreatment:  > carburizing > annealing > Hardening > nitrocarburizing

> manual manipulator

Line aPPlication

> chtZ 220 line

> carburizing and hardening furnace

Advantages:

> reductionofoperationcostsbyflexibleadaptationofthelinetoyourimmediateneeds

> easyadaptationofgratesystemtovarioussizesofthebatch> reductionofproduction,handlingandoperatingcost> automatictransferofbatchamongindividualmodulesoftheline> allowingforalternateuseofvarioushardeningenvironments> Hardeninginbatchupto450°c> Modulardesign> simpleandeasybatchhandling> itcanbecombinedwithothertypesofequipmentaccordingtotechnologicalneeds

aDVantages oF THe Line

Dimension range table

Type LAC 60 120 220 350 600 950 1200

Charge height [mm] 300 650 650 700 700 900 1100

Charge diameter [mm] 300 300 430 500 700 900 1100

Charge weight [kg] 60 120 220 350 600 950 1200

> line showed at the industry Fair Brno 2004

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Dimension range table

Type LAC 60 120 220 350 600 950 1200

Charge height [mm] 300 650 650 700 700 900 1100

Charge diameter [mm] 300 300 430 500 700 900 1100

Charge weight [kg] 60 120 220 350 600 950 1200

carBuriZing anD harDening FURnACe

> grate system

Application:

The furnace serves for the following types of chemical heat treatment of metal working:> Hardening> annealing> carburizing

> nitrocarburizing

Maximaltemperature950°celectricheatingthreezonestemperatureregulationoxygensoundprocesselectroniccontrolledcoolingchargelockedinsidethefurnaceexcellentinsulatingproperties

> carburizing furnace of the chemical-heat treatment line in Vsetin

temPering FURnACe

Application:

This furnace is used for tempering below controlled atmosphere.

formaximaltemperature:450/650/850°cprotectiveatmosphereinletretortHeatingcontrolledbyheatingmeanderscirculationofinternalatmosphere(till650°c)ormeanders(850°c)furnacebottommodifiedforgratesettingventilationchimneyprogramendsoundsignalingindustrycontrollerforcedcoolingexcellentinsulatingproperties

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niTRiDinG FURnACe With gastight retort Pn

Application:This furnace is suitable for surface nitrogen saturation in the gas atmosphere with assistance of gas ammonia. Nitrogen release devices on surface which diffuse to steel and create nitrides in the surface layer with alloying elements. Temperatures for nitriding move between 500 a 540°C. The nitride surfaces length is from 0,1 till 0,5 mm. To obtain high surface hardness, increase abrasion resistance and improve corrosion resistance are main advantages of the nitriding.

Standard design:> formaximaltemperature650°c> refractorysteelgastightretort> circulationinsertintheretortforinternalatmospherepolarization> ventilatorlocatedinthefurnacelidforinternalatmospherecirculation> Hydraulicopenedlid/manuallyuncoveredsideward> siliconesealingonthefurnaceflangeadded> regulationthermocoupleinsidetheretort> threezoneheatregulation> coolingventilator> processmediadistributor(ammonia,nitrogen,air)> processgasinputsinthefurnacelid> isoblocksisolation> Heatingensuredbyheatingmeanders> nitridingatmospherecontrolledbynitridingsound

> temperatureandgasatmosphereregulation

Accessories for extra charge:> graphicordigitalrecorder> rs232orrs485interface

forconnectionofcontrollertopc> spareretort,spareretort> chargethermocouple

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> nitriding furnace scheme

harDening BATH Application:

Hardening into:> oil> salt> water

> polymer

Hardening medium heating Hardeningmediummixing(itispossiblechangefluentlythespeedoftheblender)Hardeningreservoiraircooling(saltbath–amongjacket,oilbath–heatexchanger)saltbathwithinletsforemergencyheating

> hardening bath detailW

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WASHeRSApplication:

Batch washing (degreasing) and drying before treatment and after hardening.

Standard design:> doublechamberrinsesystem> workingmediumtemperature60°c> oilseparatororconnectiononsalt

regenerator> turningdrivewithcharge> automaticrechargingand

reservoirlevelmonitoring

> Washing chamber

> washingchamber> Liquidlevelsensor> oilseparator

harDening SALT ReGeneRATOR

> switchboard

Application:

This regenerator is suitable for salt regeneration from rinsing water from washer for batch washing after salt hardening.

Standard design:> continualandalsodiscon-

tinulalworkingprocess> automaticrisingofallow-

ingwaterfromwasherreservoir

> cycleendalarm> afterregenerationis

possibletoreturnsaltintohardeningbath

> Heatedbleedvalveforsaltmelting

> heated cock

> regenerator cooling

Process meDia DiSTRiBUTOR

> media connection to switchboard

Application:

This distributor serves for delivery of process media into the chemical thermal treatment of metals. The distributor consists of box with a system of piping, valves and flow meters in the upper part. In the lower part, there are methanol vessels.

Process media:> Methanol> propane> air> ammonia> nitrogen

connectionofallmediatocentraldistribution

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MAniPULATOR

Description:

The batch site includes table for one or two charges. There are thorns for grate scheme setting on the table desk.

Description:

Manipulator (with skids featuring special adjustments) manipulates the batch across the line length, operating all equipment of the line.

Manual manipulator:> electriclifting> Manualtraveling

Automatický manipulátor:> fullyautomaticmovementandlifting

control SYSTeMDescription:

We supply modern and reliable control system from company Process Electronic to the chemical heat treatment line.

PROTHeRM 500 – Universal programming machine for heat treatment processes.

Machine function:> visualisationofconnecteddeviceswith

possibilityofmulti-colourimageofrelevantcomponentssuchasfans,magneticvalves,etc

> controlofconnectedprocessparameters–temperature,characteristicvaluesofatmos-phere(e.g.cp,logpo2),furnacepressure,etc

> programsrelatingtorelevantbatch,monitor-ingofindividualbatchesacrossthedevice

> documentingofprocessparametersincludingalarms

> controloftargetvalues(e.g.carburizingdepths)usingtheon-linediffusioncalculation

> archivingofallprocesschanges

intuitive control:> one-handcontrollingofcursorandvaluedata

usingarotationpushbutton> functionpushbuttonstoactivatefunctions

directly> possibilityofconnectiontobarcodescanner

Visualisation:> animatedimageofthedevice> setting-upselecteddatainanoverview> completeprocessingofalarmswithcontrol,

e.g.controlofalarmcheckandhorn> checkindicator> archivingoffailures

Additional functions:> furnacemoduleforcalculationofatmosphere

valuesfromgasinletanddatascannedbysensors

> on-linecalculationofcarbonandnitrogendiffusionintosteel

> hardnesscalculationfrommaterialanalysis

The device is a web–server.

Hardware equipment:> industrialcomputerwitha6-inchtftscreen,

7pushbuttonsandrotatingcontroller,serialinterface,keyboardconnection,ip54protec-tionfromtheface,24vsupplyvoltage

> integratedinternet,networkcardforcon-nectiontoconfigurationsoftwareorcontrolcomputersystemviatcp/ip

> integratedcan-Businterfacecardforconnectionofnecessaryanalogueanddigitalperipherals

PROTHeRM 600 –universal programming machine for heat treatment processes.

Hardware equipment:> industrialcomputerwitha12.1-inchcolourtft

screen,7pushbuttonsandrotatingcontroller,serialinterface,keyboardconnection,ip54protectionfromtheface,24vsupplyvoltage;

Or, the following alternative systems can be offered:> protHerM400> protHerM50> protHerM9800

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Standard Design:> pKrformax.temperature1100°c> gastightretort> industrycontroller> Limitunit> spaceforthermocouplelocationinside

theretort> Lowprotectivegasconsumption> Heatingelementsonsidesandonthe

bottom> optimaltemperaturedistributionin

internalchamberspace> insulationbyinsulationfibrebricksand

mineralfibre> Manuallyopeneddoorandwatercooled

sealgrid> doorsaresealedbysiliconsealing> Manuallyoperatedinletofprotective

atmosphereforonegas> pressurizedcoolingwithautomaticflap

oninputandoutputofaircooling

Accessories For extra Charge:> graphicrecordertemperature> rs232orrs485interfaceforconnect

thecontrollertopc> atypicalstand> chargethermocouple> air-pump> Manovacuometer> spareretort> automaticprotectionatmospheresupply

foroneormoregases(suppliedalwayswithairpump)

> forcedinternalatmospherecirculation–furnacepKrfor900°c

Application:

These furnaces are suitable for heat treatment of materials in controlled atmosphere (argon, nitrogen, forming gas etc.) with low gas drain, till the maximal temperature 1100 °C. Especially for bright annealing, tempering, soldering, steel powder sintering etc.

CHAMBeR FURnACe With gastight retort PKr

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> Detail of airscrew for internal air circulation of furnace PKrc

type laC t max Vol.internal retort

dimension (w×h×d)

external dimension

(w×h×d)input Weight Voltage

°c l mm mm kw kg v

PKr 35/11 1100 24 220×260×450 1400×1450×1300 11 400 400

PKr 55/11 1100 30 320×200×450 1450×1450×1300 13 570 400

PKr 130/11 1100 75 450×200×700 1450×1450×1550 21 950 400

PKr 180/11 1100 110 500×340×700 1650×1650×1550 29 1050 400

PKr 350/11 1100 230 700×340×1050 1800×1750×1850 50 1350 400

CHAMBeR FURnACe With gastight retort PKr

ReCOnSTRUCiTOnweofferfullserviceinfieldofchemicalheattreatmentincludedsupplyofreplacementpart(retort,hardeningbathcoveretc.)andoldmachineryreconstruction(furnaceliningetd.)

> retort

> lining reconstruction of aichelin furnace

> heating patrons aichelin – on the palette

HeATinG elements Heating patrons for furnaces Aichelin> classificationtemperature1200°c> Metalprotectivetube

Heating patrons for furnaces ipsen> ceramicprotectivetube

> special heating elements> heating body ipsen

> retort for chemical-heat treatment furnaces

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line chtZ lac 220 in operating by czech customer

The line consists of these modules:> 2×carburizingfurnace> 2×hardeningoilbath> 2×automaticwasher> Manualforklift> temperingfurnacepp220/85

thislineisregulatedbysystemfromcompanyprocesselectronic.

LAC, s. r. o., stefanikova 116664 61 rajhradcZech rePuBlicte.: +420 547 230 016fax: +420 547 230 212www.lac.cz