Ucingo lweKarmalucingo lwe-alloy lwe-nickel-chromium-aluminium-iron olusebenza kakuhle, olusetyenziswa kakhulu njengesixhobo esiphambili sokumelana ngokuchanekileyo kunye nezixhobo zokulinganisa.

Ukumelana kwayo okugqwesileyo, i-coefficient yokumelana nobushushu obuphantsi (i-TCR), kunye nokusebenza okuzinzileyo kwenza ukuba ingabi nakutshintshwa kushishino lokuchaneka. Esi sikhokelo sinceda iingcali kwicandelo lokuchaneka kunye nezixhobo zokulinganisa ukuba zikhethe ucingo lweKarma olufanelekileyo kwiiprojekthi zazo.

1. Kutheni i-Karma Wire ibalulekile kwi-Precision Resistors kunye ne-Measurement Instruments

1.1 Iingenelo eziphambili zezicelo ezichanekileyo

Ucingo lweKarma lubonakala kakhulu kushishino lokuchaneka ngenxa yeempawu zalo ezikhethekileyo:

- Ukumelana okuphezulu (1.33 μΩ·m kwi-20℃), ngaphezulu ngokuphindwe kabini ukuya kathathu kune-manganin, okuvumela uyilo lwe-compact resistor.

- I-TCR ephantsi kakhulu (±20 ppm/℃), iqinisekisa amaxabiso okumelana azinzileyo ekutshintsheni kobushushu.

- I-EMF ephantsi yobushushu xa ithelekiswa ne-copper (≤2.5 μV/℃), kunciphisa iimpazamo zokulinganisa kwizixhobo zokuchaneka.

1.2 Indima ephambili kwiimeko ezibalulekileyo

Yeyona nto ikhethwayo kwii-resistor ze-wire-wound ezichanekileyo, ii-strain gauges, kunye nee-measurer.

Ukuzinza kwayo kumisela ngokuthe ngqo ukuchaneka nokuthembeka kwezixhobo kwiinkalo zokulinganisa i-aerospace, zonyango, kunye nezoshishino.

2. Izinto ezibalulekileyo ekufuneka uziqwalasele xa ukhetha iKarma Wire

2.1 Ukwakhiwa kweeKhemikhali kunye noHlelo

Uhlobo oluqhelekileyo lokusetyenziswa ngokuchanekileyo yiKarma 6J22, enomxube olawulwa ngokungqongqo:

- I-Nickel (Ni): Ibhalansi (malunga ne-75%), iChromium (Cr): 19-21%, iAluminiyam (Al): 2.5-3.2%, iIron (Fe): 2.0-3.0%.

Izinto ezilandelelanayo (Si, Mn, C) zinqunyelwe kwi ≤0.5% ukuqinisekisa ukusebenza okuzinzileyo.

2.2 Ububanzi beWire kunye noKunyamezela

Ububanzi buchaphazela ngokuthe ngqo ukuchaneka kokuxhathisa kunye nokwenzeka kokucubungula:

- Kwizithinteli ezichanekileyo: 0.018mm-0.10mm (ububanzi obuncinci kwiindlela ezimfutshane zoyilo).

- Kwiisensa zokulinganisa: 0.10mm-0.50mm (ibhalansi yokuguquguquka kunye nozinzo).

Ukunyamezelana kufanele kube yi-≤±0.003mm kwizicelo ezibalulekileyo ukuze kuthintelwe ukuphambuka kokumelana.

2.3 Unyango Lomphezulu

Kukho unyango oluqhelekileyo olubini olufumanekayo kwiimfuno ezahlukeneyo:

- Umphezulu oqaqambileyo: Ucociwe ngokuchanekileyo, ulungele ukusetyenziswa okufuna ukunyibilikiswa kunye nenkangeleko entle.

- Umphezulu oxidizisiweyo: Ifilimu ekhuselayo exineneyo, ephucula ukuchasana nokuxinana kunye nokuzinza kwexesha elide kumaqondo obushushu aphezulu.

2.4 Ukuguquguquka kobushushu

Khetha ngokusekelwe kubushushu bokusebenza kwezixhobo zakho:

- Usetyenziso oluzinzileyo: Ukuya kuthi ga kwi-400℃, ifanelekile kwiiresistor ezichanekileyo eziqhelekileyo.

- Usetyenziso olutshintshayo: Ukuya kuthi ga kwi-800℃, ilungele izinzwa zokulinganisa ubushushu obuphezulu.

3. I-Karma Wire vs. Iingcingo ze-Alloy ezifanayo: Uthelekiso lweShishini lokuQinisekisa

Le theyibhile ingezantsi ikunceda ukwahlula i-Karma wire kwi-constantan (eyona ndlela iqhelekileyo) yokusetyenziswa ngokuchanekileyo:

4. Isikhokelo seNyathelo ngeNyathelo sokukhetha iKarma Wire kwiProjekthi yakho

Inyathelo 1: Cacisa iimfuno zesicelo

Chaza uhlobo lwesixhobo (i-precision resistor, i-strain gauge, i-sensor) kunye nendawo yokusebenza (ubushushu, ukufuma).

Umzekelo, iigeyiji zoxinzelelo kwiindawo ezinobushushu obuphantsi (-269℃ ukuya kwi-300℃) zibeka phambili i-Karma wire ngenxa yozinzo lobushushu bayo.

Inyathelo lesi-2: Chonga iinkcukacha

Khetha ububanzi, ukunyamezela, kunye nomgangatho ngokusekelwe kwixabiso lokumelana kunye nendawo yokufakela.

Kwizithinteli ezichanekileyo kancinci, khetha ububanzi obuyi-0.02mm-0.05mm kunye nokunyamezelana okungaphezulu kwe-±0.001mm.

Inyathelo lesi-3: Khetha unyango lomphezulu

Khetha umphezulu okhanyayo ukuba kufuneka utshiswe; khetha umphezulu oxidiziweyo ukuze usetyenziswe kubushushu obuphezulu okanye ixesha elide.

Kwiigeyiji zoxinzelelo, ii-naked solder pads (SP) ziyacetyiswa ukuze kube lula ukuzitshintshatshintsha, ngelixa ii-tined dots (SD) zilula ukutywina.

Inyathelo lesi-4: Qinisekisa uMgangatho kunye neMigangatho

Qinisekisa ukuba ucingo luhambelana nemigangatho ye-ASTM B267 kunye ne-JB/T 5328 ukuze lusebenze ngokuqhubekayo.

Jonga uvavanyo lwangaphambi kokunikezelwa oluyi-100% (ukuxhathisa, i-TCR, ukunyamezela ububanzi) ukuze kuthintelwe iingxaki zomgangatho.

5. Ucingo lwethu lweKarma: Lwenzelwe iiResistors ezichanekileyo kunye nezixhobo zokulinganisa

5.1 Iinkcukacha ezipheleleyo

Sinikezela ngentambo yeKarma 6J22 enobubanzi obuqala kwi-0.018mm ukuya kwi-1.50mm, ehambelana nazo zonke iimfuno zoshishino oluchanekileyo.

Iinketho zokunyamezela ziqala kwi-±0.001mm ukuya kwi-±0.03mm, ukuqinisekisa ukuchaneka okuphezulu kokuxhathisa.

5.2 Izisombululo ezenzelwe wena

Nika unyango lomphezulu olulungiselelwe wena (olukhanyayo/oluxutyiweyo) kunye nobude bokusika kwiindlela ezithile zoyilo lwezixhobo.

Yenza ukwakheka kwe-alloy kube lula ukuze kuhlawulwe ubushushu obuzisebenzelayo (STC) ukuze kuhambelane nee-coefficients zokwandiswa kwezinto zovavanyo.

5.3 Ulawulo oluQondileyo loMgangatho

Imveliso enyibilikiswe nge-vacuum iqinisekisa ubunyulu obuphezulu (>99.5%) kunye nokusebenza okufanayo.

Uvavanyo lwangaphambi kokuhanjiswa oluyi-100% luquka ukumelana nobushushu, i-TCR, i-thermal EMF, kunye nokuhlolwa kobubanzi ukuze kuhlangatyezwane nemigangatho yoshishino echanekileyo.

6. Isiphelo

Ukukhetha ucingo lweKarma olufanelekileyo kubalulekile ekuchanekeni nasekuthembekeni kwezithinteli ezichanekileyo kunye nezixhobo zokulinganisa.

Ngokugxila kulwakhiwo, ububanzi, unyango lomphezulu, kunye nokuguquguquka kobushushu, ungakhetha ucingo olufanelekileyo kwiprojekthi yakho.

Ucingo lwethu lweKarma olukumgangatho ophezulu, olulungiselelwe ishishini lokuchaneka, lubonelela ngezisombululo ezizinzileyo nezithembekileyo.Qhagamshelana nathiukuze ufumane iingcebiso ezenzelwe wena ngokusekelwe kwiimfuno zakho zesixhobo esithile.