Sohle seo u hlokang ho se tseba ka The Melting Points of Metals?

Sebaka se qhibilihang sa tšepe ke thepa ea mantlha ea 'mele e bapalang karolo ea bohlokoa ho metallurgy, tlhahiso, sefofane, lisebelisoa tsa elektroniki le liindasteri tse ling tse ngata. Ho utloisisa lintlha tse qhibilihang ho lumella lienjiniere, bo-ramahlale ba lintho tse bonahalang, le bahlahisi ho khetha litšepe tse nepahetseng bakeng sa lisebelisoa tsa mocheso o phahameng, ho etsa motsoako le mekhoa ea ho etsa masela. Sengoliloeng sena, re tla kenella ka botebo ho tsohle tseo o hlokang ho li tseba mabapi le lintlha tse qhibilihang tsa tšepe - tse li amang, li lekantsoe joang, le hore na li ama ts'ebeliso ea liindasteri tse fapaneng joang.

Melting Point ke Eng?

Thentlha e qhibidihangke mocheso oo tshepe e fetolang boemo ba yona ho tloha ho se tiileng ho ya ho metsi. Sena se etsahala ha liathomo tsa tšepe li fumana matla a lekaneng ho hlōla maemo a tsona a tsitsitseng mohahong o tiileng le ho tsamaea ka bolokolohi joaloka mokelikeli.

• Diyuniti: E lekanngoa ka likhato tsa Celsius (°C) kapa Fahrenheit (°F).

• Bohlokoa: Litšepe tse phahameng tsa ho qhibiliha li loketse maemo a mocheso o feteletseng, ha litšepe tse tlaase li le bonolo ho lahla le ho bōptjoa.

Ke Hobane'ng ha Melting Point e le Bohlokoa indastering?

Lintlha tse qhibilihang li ama ka ho toba:

1. Khetho ea Lintho- Mohlala, li-blade tsa turbine li hloka litšepe tse kang tungsten kapa molybdenum.

2. Mekhoa ea Tlhahiso- Welding, casting, forging, le kalafo ea mocheso e hloka tsebo e nepahetseng ea boitšoaro ba ho qhibiliha.

3. Melao ea Tšireletso le Boenjiniere- Ho tseba meeli ea ho qhibiliha ho thusa ho qoba mefokolo ea sebopeho.

Lintlha Tse Amanang le Lintlha Tse Qholohang Tsa Litšepe

Mefuta e mengata e susumetsa ntlha ea ho qhibiliha:

• Sebopeho sa Atomic: Litšepe tse nang le meaho e haufi-ufi ea athomo hangata li na le libaka tse phahameng tse qhibilihang.

• Bond Matla: Litlamo tse matla tsa tšepe li hloka mocheso o mongata hore o robehe.

• Ditshila/ Motsoako: Ho kenyelletsa lintho tse ling (alloying) ho ka eketsa kapa ho fokotsa ntlha e qhibilihang ea tšepe.

• Khatello: Tlas'a khatello e feteletseng, ntlha ea ho qhibiliha e ka fapana hanyenyane.

Melting Points of Common Metals (Letlapa la Papiso)

Mona ke tšupiso e potlakileng ea lintlha tse qhibilihang tsa litšepe tse sebelisoang haholo:

Litšepe tse Phahameng tsa Melting Point le Tšebeliso ea tsona

1. Tungsten (W)

• Melting Pointmocheso: 3422°C

• Kopo: Li-filaments ka li-bulbs, li-nozzles tsa sefofane, li-electrode.

• Hobaneng: Sebaka se phahameng ka ho fetisisa sa ho qhibiliha sa litšepe tsohle, se loketseng ho hanyetsa mocheso o feteletseng.

2. Molybdenum (Mo)

• Melting Pointmocheso: 2623°C

• Kopo: Likarolo tsa sebōpi, matla a nyutlelie, lihlomo tsa sesole.

3. Tantalum (Ta)

• Melting Pointmocheso: 3017°C

• Kopo: Li-implants tsa bongaka, lisebelisoa tsa elektronike, lisebelisoa tsa sefofane.

Litšepe tse tlase tsa Melting Point le Lisebelisoa tsa tsona

1. Zinki (Zn)

• Melting Pointmocheso: 419.5°C

• Kopo: Die casting, galvanization of steel.

2. Tin (Sn)

• Melting Pointmocheso: 231.9°C

• Kopo: Solder, liaparo tsa litšepe tse ling.

3. Ketapele (Pb)

• Melting Pointmocheso: 327.5°C

• Kopo: Libetri, tšireletso ea mahlaseli.

Melting Points ho Alloy Systems

Hangata li-alloys li na le libaka tse qhibilihang ho e-na le lintlha tse bohale ka lebaka la likarolo tse ngata. Ka mohlala:

• Koporo(Koporo + Zinc): Sebaka se qhibilihang ~900–940°C

• Boronse(Koporo + Tin): Sebaka se qhibilihang ~950°C

• Tšepe e Hloekileng (18-8): Sebaka se qhibilihang ~1400–1450°C

Likarolo tsena li entsoe ka hloko bakeng sa ts'ebeliso e itseng, joalo ka ho hanyetsa kutu, matla a ho tiea le ho hanyetsa mocheso.

Tekanyo ea lintlha tse qhibilihang

Libaka tsa ho qhibiliha li khethoa ke:

1. Differential Thermal Analysis (DTA)

2. Libopi tsa Thermocouple le Mocheso o Phahameng oa Mocheso

3. Pyrometric Cone Equivalent (bakeng sa ceramics le metal oxides)

Indastering, lintlha tse nepahetseng tsa lintlha tse qhibilihang li bohlokoa bakeng sa ho netefatsa thepa ho latela litekanyetso tsa ASTM, ISO, kapa DIN.

Melting Point vs Boiling Point

• Melting Point: E tiileng ➝ Mokelikeli

• Ntlha e belang: Mokelikeli ➝ Khase

Bakeng sa litšepe, ntlha e belang e phahame haholo ho feta ntlha ea ho qhibiliha. Ka mohlala,Tungsten e pheha ka mocheso oa 5930 ° C, e etsa hore e be e loketseng bakeng sa libopi tsa vacuum le lisebelisoa tsa sebaka.

Lisebelisoa tse Hlokang Litšepe tsa Mocheso o Phahameng

Mehlala e meng moo litšepe tse phahameng haholo li leng bohlokoa:

• Lienjiniere tsa Jet: Li-superalloys tse thehiloeng ho nickel.

• Sepakapaka: Titanium le litšepe tse refractory.

• Lisebelisoa tsa Nyutlelielintho tse bonahalang: Zirconium, molybdenum.

• Libōpi tsa indasteri: Tungsten, molybdenum, ceramics.

Lintlha tsa ho Recycling le ho Lahlela

Nakong ea ho sebelisoa hape, litšepe li futhumatsoa ka holim'a libaka tsa tsona tse qhibilihang ho li hloekisa le ho li fetola. Litšepe tse kangaluminiumli loketse haholo ho sebelisoa hape ka lebaka la maemo a tlase a ho qhibiliha le ho sebetsa hape ho baballang matla.

Mekhoa ea ho lahlela (mohlala, ho lahlela lehlabathe, ho etsa matsete) e boetse e itšetlehile haholo ka ho tseba lintlha tse nepahetseng tsa ho qhibiliha ho qoba mathata.

Litlhokomelo tsa Tšireletseho Nakong ea Ts'ebetso ea Metal e Phahameng ea Mocheso

• Sebelisaliaparo tse sireletsanglelithebe tsa sefahleho.

• Kenyaho koala mochesoka thepa.

• Phethahatsalisensara tsa mochesoleshutoffs ka ho iketsa.

Tsebo ea lintlha tse qhibilihang ha se feela botekgeniki - e boetse e fana ka tsebo ea bophelo bo botle le ts'ireletso.

Qetello

Ho utloisisa lintlha tse qhibilihang tsa tšepe ha ho bohlokoa feela ho bo-rasaense le baenjiniere, empa hape le bakeng sa baetsi ba letsatsi le letsatsi le baqapi ba khethang thepa e nepahetseng bakeng sa mosebetsi. Hore na o etsa lisebelisoa tsa sepakapaka kapa lijana tse bonolo tsa ho pheha, sebaka se qhibilihang se lekanya ts'ebetso, polokeho le nako e telele.