DIY Kiln Tsim: Qhov Chaw Qhov Chaw thiab Yuav Ua Li Cas Hlau Koj Cov Thermocouples

Qhov ntsuas kub qhov tseeb yog ua rau- lossis- tawg rau ib qho DIY kiln project- seb puas yog hluav taws kub hnyiab, iav annealing, lossis cov ntaub ntawv kho. Ib qho kev mob tshwm sim hauv tsev- cov kilns ua tau yog qhov tsis sib xws ntawm kev faib hluav taws xob los yog qhov ntsuas kub tsis zoo, feem ntau rov qab mus rau qhov kev tuav tsis raug thermocouple. Cov khoom me me tab sis tseem ceeb no yog "qhov kub qhov muag" ntawm lub qhov cub, thiab tau txais lawv qhov kev tso kawm thiab xaim txoj cai tuaj yeem txhais tau tias qhov sib txawv ntawm cov haujlwm ua tiav thiab cov khoom siv pov tseg.

Ua ntej, nkag siab txog hom thermocouple thiab lawv qhov kev tsim nyog rau kev siv kiln yog qhov tseem ceeb. Cov khoom siv dav dav tshaj plaws rau DIY kilns yog K-hom thiab J- hom thermocouples, txhua qhov sib txawv ntawm qhov kub thiab txias. K-hom thermocouples, ua los ntawm chromel thiab alumel, tiv taus kub txog 1,260℃(2,300℃F) thiab tiv thaiv oxidation zoo- ua rau lawv zoo tagnrho rau feem ntau cov ceramic thiab iav tej yaam num. J-hom thermocouples, muaj li ntawm hlau thiab constantan, muaj qhov qis tshaj qhov kub ntawm 760℃(1,400℃F) thiab muaj ntau dua rau degradation hauv oxygen{15}} thaj chaw nplua nuj. Raws li kev paub dhau los, K- hom qauv yog qhov mus- rau DIY kilns vim lawv cov khoom siv tau yooj yim thiab siv tau ntev, thaum J- hom ua haujlwm tsuas yog rau qis- kub daim ntawv thov xws li cov hniav nyiaj hniav kub me me annealing kilns.

Kev tso kawm kom raug yog ib qho tseem ceeb raws li kev xaiv cov thermocouple txoj cai. Ntau tus neeg tsim khoom ua yuam kev ntawm kev tso cov thermocouples dhau los ze rau cov khoom cua sov lossis ncaj qha rau hauv txoj kev ntawm cov cua kub tam sim no, ua rau kev nyeem ntawv tsis zoo. Qhov tseeb tiag, cov thermocouples yuav tsum muab tso rau hauv qhov cub "thermal center"-qhov chaw uas cov ntaub ntawv feem ntau thauj khoom. Rau lub thawv-style kilns, qhov no txhais tau hais tias mounting lub sojntsuam kab rov tav, 5 mus rau 8 centimeters deb ntawm cov cua kub ntsiab lus thiab nyob rau hauv nruab nrab ntawm lub qhov cub qhov tob thiab qhov siab. Rau cov cylindrical kilns, qhov chaw nyob ze ntawm qhov nruab nrab ntawm lub chamber, thaum uas tig mus rau axis, xyuas kom meej qhov sib npaug ntawm qhov ntsuas kub. Tsis txhob tso cov thermocouples ze ntawm lub qhov rooj qhov cub lossis qhov cua, vim tias cov chaw no muaj qhov kub thiab txias hloov pauv sai uas tsis cuam tshuam qhov chaw nyob ib puag ncig ntawm qhov chaw ua haujlwm.

Txuas cov thermocouples kom raug tiv thaiv cov teeb liab poob thiab kev nyab xeeb kev nyab xeeb. Nws yog ib qho tseem ceeb uas yuav tsum tau siv cov xov hlau txuas txuas txuas nrog rau hom thermocouple -K- hom thermocouples yuav tsum tau K- hom txuas txuas ntxiv, thiab tib yam siv rau J- hom. Siv cov xov hlau dav dav tuaj yeem qhia txog kev ntsuas qhov yuam kev, raws li kev nyeem ntawv thermocouple cia siab rau cov khoom siv zoo ib yam ntawm tag nrho lub voj voog. Txhua qhov kev sib txuas yuav tsum nruj thiab tsis muaj corrosion; xoob terminals tsim kev tiv thaiv uas distorts kub cov ntaub ntawv. Tsis tas li ntawd, tiv thaiv cov xov hlau txuas ntxiv nrog cov kav hlau hlau lossis lub tes tsho braided txo kev cuam tshuam los ntawm lwm cov khoom siv hluav taws xob hauv qhov cub teeb. Raws li kev soj ntsuam hauv cheeb tsam, feem ntau cov xaim- cuam tshuam txog kev ua tsis tiav tshwm sim los ntawm cov xov hlau tsis sib haum lossis kev sib txuas tsis zoo, yog li ob npaug - xyuas cov ntsiab lus no txuag lub sijhawm thiab kev ntxhov siab.

Lwm qhov kev txiav txim siab tseem ceeb yog cov khoom siv thermocouple sheath. Ceramic sheaths raug pom zoo rau siab -kub kilns, raws li lawv tiv taus kub heev thiab tiv thaiv qhov kev sojntsuam los ntawm kev sib cuag ncaj qha nrog cov khoom molten lossis abrasive. Hlau sheaths, thaum muaj zog dua, ua kom sov sai dua thiab tuaj yeem cuam tshuam rau kev nyeem ntawv qhov tseeb hauv siab -cov xwm txheej kub. Nws tseem yog ib qho tseem ceeb uas yuav tau soj ntsuam cov thermocouples tsis tu ncua rau cov cim qhia ntawm hnav- cov ntaub qhwv tawg, tawg, lossis khoov qhov kev sojntsuam txhua qhov qhia tias yuav tsum tau hloov kho kom raug.

Txhawm rau ua kom tiav, xaiv hom thermocouple txoj cai (xws li K- hom rau feem ntau DIY kilns), muab tso rau hauv qhov chaw thermal kom deb ntawm cov ntsiab lus thiab cov ntawv sau, thiab siv cov hlua txuas txuas ntxiv nrog kev sib txuas ruaj ntseg yog cov kauj ruam tseem ceeb los xyuas kom meej qhov kub thiab txias. Rau DIY kilns yooj yim, cov lus qhia no txaus, tab sis kev tsim los yog kev lag luam -qib daim ntawv thov xav tau kev daws teeb meem. Qhov sib txawv ntawm qhov cub, cov khoom siv cua sov, thiab cov kev npaj siv yuav tsum muaj kev tshaj lij thermocouple layout thiab thaiv cov qauv tsim kom ua tau zoo thiab kev nyab xeeb- tig mus rau tshwj xeeb 电热 (tsim hluav taws xob) cov kev daws teeb meem kom paub meej tias generic DIY txoj kev yuav tsis muaj.