Carbide Welding Technologies, Processes, and Industrial Applications

Carbide e entsoeng ka samente, e tsebahalang ka ho thatafala ha eona (ho fihla ho 90 HRC) le ho hanyetsa ho roala, e kopantsoe ka ho pharaletseng ho lithulusi tsa ho itšeha, lisebelisoa tsa merafo le likarolo tse nepahetseng ka ho cheselletsa. Leha ho le joalo, brittleness ea eona e phahameng le coefficient e sa lumellaneng ea ho atolosa mocheso (TEC) e nang le li-substrates tsa tšepe (4-7 × 10⁻⁶/°C vs. 11-13 × 10⁻⁶/°C) e baka mathata a ikhethang a ho cheseletsa. Sengoliloeng sena se fana ka lintlha tsa mahlale a tjheseletsang, taolo ea bohlokoa ea ts'ebetso, le lits'ebetso tsa lefats'e tsa 'nete tsa lisebelisoa tsa carbide.

1. Litheknoloji tse ka sehloohong tsa Welding bakeng sa Carbide

Ho na le mekhoa e 'meli ea ho kopanya li-carbide tsa indasteri: brazing (e tloaelehileng empa e ka tšeptjoa) le laser welding (tharollo e tsoetseng pele e nepahetseng). Litšobotsi tsa bona tsa mantlha li bapisoa ka tlase:

▶ Brazing: Lebelo la Mosebetsi la Tlhahiso ea Lisebelisoa tsa Carbide

Brazing e finyella tlamahano ka ho qhibilihisa tšepe ea ho tlatsa (sebaka se tlaase sa ho qhibiliha ho feta carbide / tšepe) ho kolobisa le ho tlatsa likheo tse kopanetsoeng, ntle le ho qhibiliha lisebelisoa tsa motheo. Ke mokhoa o ka sehloohong oa lisebelisoa tsa carbide ka lebaka la theko e tlaase le ho lumellana le tlhahiso ea bongata.

Melao-motheo ea Bohlokoa le Khetho ea ho Tlatsa

Bonding Mechanism: Tšepe e entsoeng ka ho qhibilihisoa e kenella ka likheo tse nyane ka ts'ebetso ea capillary, e etsa bond ea metallurgical e nang le carbide (WC-Co) le likaroloana tsa tšepe ka phallo ea element (mohlala, Cr in filler e arabela le C ho carbide ho theha Cr₃C₂).

Lisebelisoa tsa ho tlatsa:

Ni-Cr-Based: E ratoa bakeng sa lisebelisoa tsa mocheso o phahameng (mohlala, lisebelisoa tsa ho sila), e qhibiliha ho 1050-1150 ° C, 'me e fana ka khanyetso e ntle ea oxidation.

Ag-Cu-Based: E sebelisetsoa lisebelisoa tse tlaase tsa khatello ea kelello (mohlala, li-lathe inserts), e qhibiliha ka 650-800 ° C, e fokotsa kotsi ea mocheso oa mocheso.

Cu-Based: Khetho ea moruo bakeng sa lisebelisoa tsa ho itšeha ka kakaretso, e hloka flux ho tlosa lifilimi tsa oxide.

▶ Laser Welding: Ho Kopanya ka nepo bakeng sa lisebelisoa tse sebetsang hantle

Ho tjheseletsa ka laser ho sebelisa seketsoana se tsepamisitsoeng (1.06μm fiber laser e khethoang) ho theha matamo a qhibilihisitsoeng sebakeng sa heno, a nolofalletsang matla a phahameng, manonyeletso a tlase. E loketse lisebelisoa tse nyane le li-geometri tse rarahaneng.

Melemo ea Setsebi ho Feta Brazing

Tšusumetso e Nyenyane ea Thermal: Sebaka se amehang ke mocheso (HAZ)

Ts'ebetso e potlakileng: Lebelo la welding ho fihla ho 50mm / s bakeng sa ho kenya carbide, 3x ka potlako ho feta brazing ea induction.

Khetho e sa Tlatsehang: Ho kopanya ka ho toba bakeng sa likaroloana tsa carbide tse tšesaane (mohlala, li-micro-drill).

2. Mathata a Konokono le Maano a ho Fokotsa

Ho hloleha ha li-welding tsa carbide haholo-holo ho bakoa ke khatello ea maikutlo e setseng le ho kolobisa hampe. 

Litharollo tse reriloeng ke tsa bohlokoa:

▶ Khatello ea Maikutlo le ho Petsoha

Lebaka la Motso: Ho se lumellane ha TEC ho baka liphapang tsa tšitiso ea mocheso nakong ea pholileng, ho baka khatello ea maikutlo ho carbide.

Litharollo:

Sebelisa li-buffer layers (mohlala, alloy ea Ni-Cu) ho monya khatello ea maikutlo.

Amohela ho futhumatsa / ho hatsetsa ka mokhoa o pholileng (sekhahla sa marang-rang ≤10°C/s) ha u le ka har'a brazing.

Ho futhumatsa ka mor'a ho cheselletsa ho 250 ° C bakeng sa lihora tse 2 ho fokotsa khatello ea kelello ka 30-50%.

▶ Ho fokola ha metsi

Lebaka la Motso: Matla a holimo a Carbide a hanana le ho kenella ha tšepe ea filler.

Litharollo:

Hlakola carbide esale pele ka phofo ea Cr ho theha lera le tlamang la Cr₃C₂.

Sebelisa li-fluxes tse sebetsang (mohlala, tse thehiloeng ho borax) ho tlosa lifilimi tsa oxide holim'a likaroloana tsa tšepe.

▶ Khoholeho ea Metal

Lebaka la Motso: Ho futhumatsa ho feteletseng ho qhibilihisa carbide's Co binder, ho fokolisa lenonyeletso.

Litharollo:

Fokotsa nako ea ho cheselletsa ho

Laola nako ea laser pulse (2-5ms) ho qoba ho pepesehela nako e telele.

3. Likopo tsa Indasteri le Lithuto tsa Litaba

Carbide welding e thusa lisebelisoa tse sebetsang hantle haholo makaleng:

▶ Ho Seha Lisebelisoa

Lisebelisoa tsa CNC Tool: Induction brazing ea WC-Co kenyas ho lishanka tsa tšepe tse sebelisang Ni-Cr-B-Si filler (1080 ° C, 45s) e fihlella matla a kopaneng a 200MPa-ho mamella meroalo ea machining ea 5000rpm.

Li-Circular Saw Blades: Automated laser welding (300W fiber laser) ea meno a carbide ho discs ea tšepe e fokotsa sekhahla sa ho robeha ha leino ka 60% vs. brazing.

▶ Meepo le Kaho

Rock Drilling Bits: Vacuum brazing ea li-buttons tsa carbide ho 'mele ea tšepe (Ni-Cr filler, 1120 ° C) e tiisa ho hanyetsa meroalo ea tšusumetso ea 50MPa; bophelo ba tšebeletso bo atolosoa ka 2–3x.

▶ Precision Engineering

Micro-Machining Tools: Fiber laser welding ea 0.8mm carbide tips to stainless steel shafts (250W, 15mm/s) e boloka ± 0.01mm dimensional ho nepahala bakeng sa ho seha semiconductor wafer.

4. Mekhoa ea Bokamoso

Hybrid Welding: Ho kopanya laser pre-heating le induction brazing ho fokotsa ho phatloha ha carbide manonyeletsong a karolo e teteaneng.

Nts'etsopele ea Filler e Matla: Li-filler tsa Ni-Cr-Ti tse theha maqhama a matla a TiC a nang le carbide, a ntlafatsang ho tšoarella ha manonyeletso ka 30%.

Integration ea Automation: Sistimi e tsamaisoang ke AI e nang le tlhaiso ea nako ea 'nete ea mocheso ho ntlafatsa liparamente tsa welding bakeng sa limaraka tse fapaneng tsa carbide.

Qetello

Carbide welding e hloka ho leka-lekana ha mahlale a lintho tse bonahalang le taolo ea ts'ebetso-brazing e ipabola tlhahisong ea boima e theko e boima, athe welding ea laser e laola lits'ebetso tsa bohlokoa haholo. Ka ho sebetsana le mathata a setseng le mathata a ho nosetsa, bahlahisi ba ka bula bokhoni bo feletseng ba carbide libakeng tse phahameng, tse nang le khatello e phahameng ea khatello ea kelello, ho tloha ho mechine ea indasteri ho ea ho mesebetsi e feteletseng ea merafo.