Ucingo lweKarmaiyintambo ye-alloy ye-nickel-chromium-aluminium-iron esebenza kahle kakhulu, esetshenziswa kabanzi njengezinto eziyinhloko zokumelana okunembile nezinsimbi zokulinganisa.

Ukumelana kwayo okuhle kakhulu, i-coefficient yokumelana nokushisa okuphansi (i-TCR), kanye nokusebenza okuzinzile kwenza ingakwazi ukushintshwa embonini yokunemba. Lo mhlahlandlela usiza ochwepheshe emkhakheni wokumelana nokunemba kanye nethuluzi lokulinganisa ukuthi bakhethe ucingo lweKarma olufanele kumaphrojekthi abo.

1. Kungani Intambo KaKarma Ibalulekile Kuma-Resistors Aqondile Namathuluzi Okulinganisa

1.1 Izinzuzo Eziyinhloko Zezinhlelo Zokusebenza Ezinembile

I-Karma wire ivelele embonini yokunemba ngenxa yezakhiwo zayo ezihlukile:

- Ukumelana okuphezulu (1.33 μΩ·m ku-20℃), okuphindwe kabili-kathathu kune-manganin, okuvumela imiklamo ye-compact resistor.

- I-TCR ephansi kakhulu (±20 ppm/℃), eqinisekisa amazinga okumelana okuzinzile ekushintsheni kwezinga lokushisa.

- I-EMF ephansi yokushisa uma iqhathaniswa nethusi (≤2.5 μV/℃), kunciphisa amaphutha okulinganisa kumathuluzi okunemba.

1.2 Indima Ebalulekile Ezimweni Ezibucayi

Yinto ekhethwayo kakhulu yama-resistor ane-wire-wound anembile kakhulu, ama-strain gauge, kanye nezinzwa zokulinganisa.

Ukuqina kwayo kunquma ngqo ukunemba nokuthembeka kwezinsimbi emikhakheni yokulinganisa izindiza, ezokwelapha, kanye nezimboni.

2. Izinto Ezibalulekile Okufanele Uzicabangele Lapho Ukhetha I-Karma Wire

2.1 Ukwakheka Kwamakhemikhali Nezinga

Izinga elijwayelekile lokusetshenziswa ngokunemba yiKarma 6J22, enokwakheka okulawulwa ngokuqinile:

- I-Nickel (Ni): Ibhalansi (cishe u-75%), i-Chromium (Cr): 19-21%, i-Aluminium (Al): 2.5-3.2%, i-Iron (Fe): 2.0-3.0%.

Izakhi zokulandelela (i-Si, i-Mn, i-C) zikhawulelwe ku-≤0.5% ukuqinisekisa ukusebenza okuzinzile.

2.2 Ububanzi bezintambo kanye nokubekezelelana

Ububanzi buthinta ngqo ukunemba kokumelana kanye nokwenzeka kokucubungula:

- Kwabaphikisi abanembile: 0.018mm-0.10mm (ububanzi obuncane bemiklamo emincane).

- Kwezinzwa zokulinganisa: 0.10mm-0.50mm (ibhalansi yokuguquguquka nokuqina).

Ukubekezelelana kufanele kube ngu-≤±0.003mm kwezicelo ezibalulekile ukugwema ukuphambuka kokumelana.

2.3 Ukwelashwa Komphezulu

Izindlela ezimbili zokwelapha ubuso ezivamile ziyatholakala ngezidingo ezahlukene:

- Ubuso obukhanyayo: Bucwebezelisiwe kahle, bufanele ukusetshenziswa okudinga ukushintshwa kanye nokubukeka okuhle.

- Ubuso obune-oxidized: Ifilimu evikelayo eqinile, ethuthukisa ukulwa ne-oxidation kanye nokuqina kwesikhathi eside emazingeni okushisa aphezulu.

2.4 Ukuzivumelanisa Nezimo Zokushisa

Khetha ngokusekelwe ekushiseni kokusebenza kwezinsimbi zakho:

- Izinhlelo zokusebenza ezimile: Kufika ku-400℃, ezifanele ama-resistor ajwayelekile okunemba.

- Izinhlelo zokusebenza ezishintshayo: Kufika ku-800℃, zilungele izinzwa zokulinganisa izinga lokushisa eliphezulu.

3. I-Karma Wire vs. Izintambo Ze-Alloy Ezifanayo: Ukuqhathanisa Imboni Yokunemba

Ithebula elingezansi likusiza ukuhlukanisa i-Karma wire ne-constantan (indlela evamile) yokusetshenziswa okunembile:

4. Umhlahlandlela Wesinyathelo Ngesinyathelo Wokukhetha I-Karma Wire Yephrojekthi Yakho

Isinyathelo 1: Cacisa Izidingo Zesicelo

Chaza uhlobo lwethuluzi (i-resistor enembile, i-strain gauge, i-sensor) kanye nendawo yokusebenza (izinga lokushisa, umswakama).

Isibonelo, amageyiji okucindezela ezindaweni eziphansi zokushisa (-269℃ kuya ku-300℃) abeka phambili i-Karma wire ngenxa yokuqina kwayo kokushisa.

Isinyathelo 2: Thola Imininingwane

Khetha ububanzi, ukubekezelelana, kanye nebanga ngokusekelwe enanini lokumelana nendawo yokufaka.

Kuma-resistors anokunemba okuncane, khetha ububanzi obungu-0.02mm-0.05mm obunokubekezelelana okungu-±0.001mm.

Isinyathelo 3: Khetha Ukwelashwa Komphezulu

Khetha indawo ekhanyayo uma kudingeka ukushiswa nge-solder; khetha indawo e-oxidized ukuze isetshenziswe ekushiseni okuphezulu noma isikhathi eside.

Kuma-strain gauge, ama-naked solder pads (SP) ayanconywa ukuze kube nokuguquguquka, kuyilapho amachashazi afakwe emathinini (SD) enza kube lula ukunamathela.

Isinyathelo 4: Qinisekisa Ikhwalithi Namazinga

Qinisekisa ukuthi intambo ihambisana nezindinganiso ze-ASTM B267 kanye ne-JB/T 5328 ukuze isebenze kahle.

Hlola ukuhlolwa kwangaphambi kokulethwa okungu-100% (ukumelana, i-TCR, ukubekezelelana kobubanzi) ukuze ugweme izinkinga zekhwalithi.

5. Ucingo Lwethu lweKarma: Lwenzelwe Ama-Resistors Aqondile kanye Nezinsimbi Zokulinganisa

5.1 Imininingwane Ephelele

Sinikeza intambo yeKarma 6J22 enobubanzi obusukela ku-0.018mm kuya ku-1.50mm, ehambisana nazo zonke izidingo zemboni yokunemba.

Izinketho zokubekezelela zisukela ku-±0.001mm kuya ku-±0.03mm, okuqinisekisa ukunemba okuphezulu kokumelana.

5.2 Izixazululo Ezenziwe Ngokwezifiso

Nikeza ukwelashwa kwendawo okwenziwe ngokwezifiso (okukhanyayo/okufakwe i-oxidized) kanye nobude bokusika bemiklamo ethile yamathuluzi.

Lungisa ukwakheka kwe-alloy kancane ukuze uthole isinxephezelo sokushisa ngokwakho (STC) ukuze kufane nama-coefficients okwandisa izinto zokuhlola.

5.3 Ukulawulwa Kwekhwalithi Okuqinile

Ukukhiqizwa okuncibilikisiwe nge-vacuum kuqinisekisa ukuhlanzeka okuphezulu (>99.5%) kanye nokusebenza okufanayo.

Ukuhlolwa kwangaphambi kokulethwa okungu-100% kufaka phakathi ukumelana, i-TCR, i-thermal EMF, kanye nokuhlolwa kobubanzi ukuze kuhlangatshezwane nezindinganiso zomkhakha zokunemba.

6. Isiphetho

Ukukhetha ucingo lweKarma olufanele kubalulekile ekunembeni nasekuthembekeni kwama-resistor anembile kanye nezinsimbi zokulinganisa.

Ngokugxila ekwakhiweni, ububanzi, ukwelashwa kwendawo, kanye nokuzivumelanisa nezimo zokushisa, ungakhetha ucingo olufanele kakhulu iphrojekthi yakho.

Ucingo lwethu lweKarma olusezingeni eliphezulu, oluklanyelwe imboni yokunemba, lunikeza izixazululo ezizinzile nezithembekile.Xhumana nathiukuze uthole izincomo ezenzelwe wena ngokusekelwe ezidingweni zakho ezithile zethuluzi.