Teknụzụ ịgbado ọkụ nke Carbide, Usoro, na Ngwa nrụpụta

Carbide cimented, nke ama ama maka ike siri ike ya (ihe ruru 90 HRC) ma na-eyi nguzogide, etinyere n'ọtụtụ ebe n'ime ngwa ịkpụ, ibe ngwuputa, na ihe ndị ziri ezi site na ịgbado ọkụ. Otú ọ dị, nrịkasị elu ya na ọnụọgụ mgbasawanye ọkụ na-adaghị adaba (TEC) nwere ihe nchara ígwè (4-7 × 10⁻⁶/°C vs. 11–13 × 10⁻⁶/°C) na-ebute ihe ịma aka ịgbado ọkụ pụrụ iche. Edemede a na-akọwa teknụzụ ịgbado ọkụ kachasị, njikwa usoro dị oke egwu, yana ngwa ụwa n'ezie maka akụrụngwa carbide.

1. Teknụzụ ịgbado ọkụ na-achị maka Carbide

Ụzọ abụọ na-emeri na njikọ carbide mmepụta ihe: brazing (nke a na-ahụkarị ma bụrụ nke a pụrụ ịdabere na ya) na ịgbado ọkụ laser (ihe ngwọta dị elu). Atụnyere isi njirimara ha n'okpuru:

▶ Brazing: The Workhorse of Carbide Tool Manufacturing

Brazing na-enweta njikọ site na ịgbaze metal filler (ebe mgbaze dị ala karịa carbide / ígwè) ka mmiri wee mejupụta oghere nkwonkwo, na-agbazeghị ihe ndị bụ isi. Ọ bụ usoro bụ isi maka ngwaọrụ carbide n'ihi ọnụ ahịa ya na ndakọrịta na mmepụta oke.

Isi ụkpụrụ & Nhọrọ ndochi

Mechanism bonding: metal filler a wụrụ awụ na-abanye n'ime obere oghere site na capillary, na-akpụ agbụ ọla na carbide (WC-Co) na ihe nchara site na mgbasa nke mmewere (dịka, Cr na filler na-emeghachi omume na C na carbide iji mepụta Cr₃C₂).

Alloys ndochi:

Ni-Cr-Dabere: A na-ahọrọ maka ngwa okpomọkụ dị elu (dịka ọmụmaatụ, ngwá ọrụ igwe igwe), gbazee na 1050-1150 ° C, ma na-enye ezigbo nkwụsị oxidation.

Ag-Cu-Dabere: Ejiri ya maka ngwaọrụ nrụgide dị ala (dịka ọmụmaatụ, ntinye lathe), agbaze na 650-800 Celsius, na-ebelata ihe egwu egwu ọkụ.

Cu-Dabere: Nhọrọ akụ na ụba maka ngwaọrụ ịchacha ebumnuche izugbe, chọrọ mgbanwe iji wepụ ihe nkiri oxide.

▶ Laser Welding: Ịbanye nke ọma maka ngwa ọrụ dị elu

Ịgbado ọkụ nke laser na-eji ọkụ lekwasịrị anya (1.06μm fiber laser prefer) iji mepụta ọdọ mmiri a wụrụ awụ, na-eme ka ike dị elu, nkwonkwo nrụrụ dị ala. Ọ dị mma maka micro-tools na mgbagwoju geometry.

Uru nka na ụzụ karịa Brazing

Mmetụta Obere Obere: Mpaghara emetụtara ọkụ (HAZ)

Nhazi ngwa ngwa: ịgbado ọkụ ruo 50mm/s maka ntinye carbide, 3x ngwa ngwa karịa brazing induction.

Nhọrọ na-enweghị ndochi: Ngwakọta ozugbo maka akụrụngwa carbide nwere mgbidi dị mkpa (dịka ọmụmaatụ, micro-drills).

2. Isi ihe ịma aka & Mbelata Strategies

Ọdịda ịgbado ọkụ nke Carbide bụ isi na-esite na nrụgide fọdụrụnụ na mmiri adịghị mma. 

Ngwọta ndị ezubere iche dị mkpa:

▶ Nchegbu na mgbawa

Ihe kpatara ya: TEC mismatch na-ebute ọdịiche dị iche iche na-ekpo ọkụ n'oge jụrụ oyi, na-ebute nrụgide tensile na carbide.

Ngwọta:

Jiri akwa mkpuchi ihe etiti (dịka ọmụmaatụ, Ni-Cu alloy) iji nweta nrụgide.

Nabata kpo oku/nju oyi (ọnụego mgbago ≤10°C/s) n'ime induction brazing.

Igwe ọkụ na 250 Celsius C maka awa 2 iji belata nrụgide site na 30-50%.

▶ Mmiri mmiri na-adịghị mma

Ihe kpatara ya: Ike elu nke Carbide na-eguzogide ntinye igwe ndochi.

Ngwọta:

Were ntụ ntụ Cr were tupu ya agwọ ya ka ọ bụrụ oyi akwa nke Cr₃C₂.

Jiri fluxes na-arụ ọrụ (dịka ọmụmaatụ, borax dabere) iji wepụ ihe nkiri oxide na ihe nchara.

▶ Filler metal erosion

Ihe kpatara ya: Igwe ọkụ na-ekpo ọkụ na-agbaze carbide's Co binder, na-ebelata nkwonkwo.

Ngwọta:

Machie oge ịgbado ọkụ ruo

Na-achịkwa oge pulse laser (2-5ms) iji zere ikpughe ogologo oge.

3. Ngwa ụlọ ọrụ mmepụta ihe & Ọmụmụ Okwu

Carbide welding na-enyere ngwaọrụ arụ ọrụ dị elu n'ofe mpaghara:

▶ Ịmepụta Ngwa Ngwa

Ihe ntinye Ngwá Ọrụ CNC: Ntinye brazing nke ntinye WC-Cos na nchara ígwè na-eji Ni-Cr-B-Si filler (1080 ° C, 45s) na-enweta ike nkwonkwo 200MPa-na-eji 5000rpm machining ibu.

okirikiri saw Blades: Automated laser welding (300W fiber laser) nke carbide ezé ka ígwè diski na-ebelata nha nha nha nha site na 60% vs. brazing.

▶ Ngwuputa na ihe owuwu

Ngwunye egwu nkume: Vacuum brazing nke bọtịnụ carbide na ozu nchara (Ni-Cr filler, 1120°C) na-eme ka iguzogide ibu mmetụta 50MPa; ndụ ọrụ gbatịpụrụ site na 2–3x.

▶ Injinia nkenke

Ngwaọrụ Micro-Machining: Ịgbado ọkụ laser nke 0.8mm carbide ndụmọdụ ka igwe anaghị agba nchara (250W, 15mm / s) na-edobe ± 0.01mm ziri ezi akụkụ maka ịcha wafer semiconductor.

4. Ụdị Ọdịnihu

Ngwakọ ịgbado ọkụ: Ijikọta ọkụ ọkụ laser na brazing induction iji belata mgbawa carbide na nkwonkwo akụkụ buru ibu.

Mmepe Filler na-arụ ọrụ: Ni-Cr-Ti ihe nchacha nke na-eme ka njikọ TiC siri ike na carbide, na-eme ka ịdịte aka nkwonkwo site na 30%.

Ngwakọta akpaaka: Sistemụ na-anya AI nwere nlebanya ọkụ n'ezie iji bulie usoro ịgbado ọkụ maka akara ule carbide agbanwe.

Mmechi

Carbide ịgbado ọkụ na-achọ a itule nke ihe onwunwe sayensị na usoro njikwa-brazing karịrị na-eri-oru oma uka mmepụta, ebe laser ịgbado ọkụ na-achịkwa nkenke-dị oké egwu ngwa. Site n'ịgbasa nrụgide fọdụrụnụ na ihe ịma aka wettability, ndị na-emepụta nwere ike imeghe ike zuru oke nke carbide na akwa akwa akwa, gburugburu ebe mgbakasị ahụ, site na nhazi ụlọ ọrụ na-arụ ọrụ ngwungwu dị egwu.