Tekinolosi Uilaina Carbide, Fa'agasologa, ma Talosaga Alamanuia

carbide sima, ta'uta'ua i lona ma'a'a fa'apitoa (e o'o i le 90 HRC) ma le fa'a'au'au, e fa'apipi'i lautele i mea faigaluega tipi, fa'a'eliina, ma vaega sa'o e ala i le uelo. Ae ui i lea, o lona brittleness maualuga ma mismatched thermal expansion coefficient (TEC) ma substrates uʻamea (4-7 × 10⁻⁶ / ° C vs. 11-13 × 10⁻⁶ / ° C) o loʻo tulaʻi mai ai ni luʻitau uʻamea tulaga ese. O lenei tusiga o loʻo faʻamatalaina ai le faʻaogaina o tekonolosi uʻu, faʻatonuga faʻatonuga, ma faʻaoga moni i le lalolagi mo mea carbide.

1. Pulea Fa'atekonolosi Uila mo Carbide

E lua auala o loʻo faʻaaogaina i le faʻapipiʻiina o carbide alamanuia: brazing (masani ae faʻatuatuaina) ma le laser uelo (faʻamatalaga saʻo maualuga). O latou uiga autu o loʻo faʻatusatusaina i lalo:

▶ Fa'a'u'u: O le Galue galue o le Gaosi Mea faigaluega Carbide

Brazing e maua le fusia e ala i le faʻafefeteina o se uʻamea faʻatumu (maualalo le mea faʻafefeteina nai lo carbide/umea) e susu ma faʻatumu va faʻatasi, e aunoa ma le faʻafefeteina o mea faʻavae. O le auala autu mo meafaigaluega carbide ona o lona tau-lelei ma fetaui ma le tele o gaosiga.

Mataupu Faavae Autu & Filifiliga Faatumu

Faiga Fa'apipi'i: O le u'amea fa'atumu u'amea e fa'auluina ai ni va'a laiti e ala i le ga'o gaogao, fa'atupu fa'amau fa'atasi ma carbide (WC-Co) ma mea fa'ameamea e ala i le fa'asalalauina o elemene (fa'ata'ita'iga, Cr i totonu o le fa'atumu e tali atu ma le C i carbide e fausia ai le Cr₃C₂).

Fa'atumu mea'ai:

Ni-Cr-Based: E sili atu mo faʻaoga maualuga-vevela (faʻataʻitaʻiga, meafaigaluega vili), liusuavai i le 1050-1150 ° C, ma ofoina atu le faʻamaʻi faʻamaʻi lelei.

Ag-Cu-Based: Faʻaaogaina mo mea faigaluega maualalo (eg, lathe inserts), liusuavai i le 650-800 ° C, faʻaitiitia ai le lamatiaga o le vevela.

Cu-Fa'avae: Filifiliga tau tamaoaiga mo mea faigaluega tipi, e mana'omia ai le fa'afefe e aveese ai ata o le oxide.

▶ Laser Uila: Fa'atasi sa'o mo Meafaigaluega Maualuga

Leisa uelo fa'aaogaina se la'au taula'i (1.06μm fiber leisa e mana'o ai) e fa'atupu ai vaita'ele u'amea fa'apitonu'u, fa'aagaioi ai so'oga maualuga-malosi, maualalo-deformation. E lelei mo micro-meafaigaluega ma geometries lavelave.

Ituaiga Fa'ainisinia I lo Brazing

La'ititi A'afiaga Fa'avela: Sone e a'afia i le vevela (HAZ)

Faʻagasologa vave: Faʻapipiʻi saoasaoa e oʻo atu i le 50mm / s mo faʻapipiʻi carbide, 3x vave nai lo le faʻauluina o le induction.

Filifiliga Fa'atumu-Sa'oloto: Fa'afefiloi sa'o mo vaega carbide pa manifinifi (fa'ata'ita'iga, micro-drill).

2. Lu'itau Autu & Taiala Fa'aitiitia

O faaletonu o le ueloina o Carbide e mafua mai i le mamafa o totoe ma le susu leaga. 

O fofo faʻatatau e taua tele:

▶ Fa'aletonu Fa'aletonu & Ta'e

Mafua'aga: TEC le fetaui e mafua ai le eseesega o le vevela i le taimi o le malulu, faʻatupuina le mamafa o le carbide.

Tali:

Fa'aaogā fa'alava fa'alava (eg, Ni-Cu alloy) e fa'afefe ai le fa'alavelave.

Fa'aaoga le fa'avevela/maalili fa'asolosolo (fa'asa'o ≤10°C/s) ile fa'aulu fa'aulu.

Fa'ata'ita'i fa'asolosolo i le 250°C mo le 2 itula e fa'amāmā ai le fa'alavelave e 30-50%.

▶ Le lelei le susu

Mafua'aga: O le malosi maualuga o le Carbide e tetee atu ai i le fa'auluina o u'amea.

Tali:

Fa'ata'atia muamua le carbide i le pauta Cr e fai ai se vaega fa'apipi'i Cr₃C₂.

Fa'aaogā fe'au fa'agaoioi (eg, borax-based) e aveese ai ata o le oxide i luga o mea uamea.

▶ Fa'a'umea Fa'auma

Mafua'aga: O le fa'avevela tele e fa'amavae ai le carbide's Co binder, fa'avaivaia le sooga.

Tali:

Fa'atapula'a le taimi uelo i

Pulea le umi ole pa'u o le laser (2-5ms) e aloese ai mai le fa'aumiumi.

3. Talosaga Alamanuia & Su'esu'ega Tulaga

Carbide uelo e mafai ai meafaigaluega maualuga-faatinoga i vaega eseese:

▶ Gaosi Meafaigaluega Otioti

CNC Tool Inserts: Induction brazing of WC-Co inserts i pa'u u'amea fa'aoga Ni-Cr-B-Si filler (1080°C, 45s) ausia 200MPa malosi soofaatasi-fa'asagatau 5000rpm uta masini.

La'au Va'ai Li'o: Uu fa'ameamea leisa (300W fibre laser) o nifo carbide i tisiki u'amea fa'aitiitia ai le gau o nifo i le 60% vs. brazing.

▶ Mining & Faufale

Papa Drilling Bits: Vacuum brazing o carbide buttons i tino uʻamea (Ni-Cr filler, 1120 ° C) faʻamautinoa le tetee atu i le 50MPa aʻafiaga o avega; ola tautua fa'alautele e 2–3x.

▶ Sa'o Inisinia

Meafaigaluega Micro-Machining: Fiber leisa uelo o 0.8mm carbide tips i uʻamea uʻamea (250W, 15mm/s) tausia ± 0.01mm le sao atoatoa mo semiconductor wafer tipi.

4. Tulaga i le Lumanai

Su'ega Fa'atosina: Tu'ufa'atasia le fa'avevelaina muamua o le laser fa'atasi ai ma le fa'aulu fa'aulu e fa'aitiitia ai le ta'e o le carbide i so'oga mafiafia.

Atinaʻe Faʻatumu Atinaʻe: Ni-Cr-Ti faʻatumu e fausia ai le malosi o fusi TiC faʻatasi ma carbide, faʻaleleia le tumau faʻatasi e 30%.

Tu'ufa'atasiga Fa'aautometi: Faiga fa'ata'ita'i AI fa'atasi ai ma le mata'ituina o le vevela i taimi tonu e fa'amalieina ai fa'amaufa'ailoga uelo mo fa'ailoga carbide fesuia'i.

Fa'ai'uga

E mana'omia e le uelo o le Carbide se paleni o meafaitino ma le fa'atonutonuina o le fa'agasologa—e sili atu le fa'amauina i le gaosiga fa'atele e taugofie, a'o le fa'aulu leisa e pulea fa'aoga sa'o-taua. E ala i le faʻatalanoaina o faʻafitauli o loʻo totoe ma susū, e mafai e tagata gaosi oloa ona tatalaina le gafatia atoatoa o le carbide i luga o laʻei maualuga, faʻalavelave maualuga, mai le gaosiga o fale gaosi oloa e oʻo atu i le tele o galuega eli.