Echiche nke carbide cimented: ihe mejupụtara ihe mejupụtara nke ntụ ntụ mebere nke mejupụtara ngwakọta metal refractory (akụkụ siri ike) na metal jikọtara (njikọ jikọtara).
The matriks nke cemented carbide mejupụtara akụkụ abụọ: Otu akụkụ bụ ike siri ike: Akụkụ nke ọzọ bụ bonding metal.
The agba siri ike na-adọ bụ carbide nke mgbanwe ọla na nke oge table nke ọcha, dị ka tungsten carbide, titanium carbide, tantalum carbide, nke siri ike na-enwe a agbaze ihe karịrị 2000 ℃, ụfọdụ ọbụna karịa 4000 ℃.Na mgbakwunye, mgbanwe metal nitrides, borides, silicides nwekwara ihe ndị yiri ya na enwere ike iji ya dị ka usoro siri ike na carbide cimented.Ọnụnọ nke akụkụ ahụ siri ike na-ekpebi oke ike siri ike ma na-eyi nguzogide nke alloy.
Ọla ndị a na-ejikọta ya bụ ọla kọpa ígwè, nke na-abụkarị cobalt na nickel.Maka imepụta carbide cimented, a na-ahọrọ ntụ ntụ akụrụngwa na nha nha n'etiti 1 na 2 microns na oke ịdị ọcha.A na-edobe ihe ndị ahụ dị ka usoro ihe mejupụtara ya si dị, gbakwunye ya na mmanya ma ọ bụ mgbasa ozi ndị ọzọ na igwe igwe na-egwu mmiri, na-egweri mmiri mmiri, nke mere na a na-agwakọta ha nke ọma, gwerie ya, nke a mịrị amị, sieved ma tinye ya na wax ma ọ bụ chịngọm na ụdị ịkpụzi ndị ọzọ. ndị ọrụ, wee mịrị amị, sieved ma mee ka ọ bụrụ ngwakọta.Mgbe ahụ, a na-agbanye ngwakọta ahụ, pịa ya, ma kpoo ọkụ n'akụkụ ebe mgbaze nke metal bonded (1300 ~ 1500 ℃), usoro ahụ siri ike na metal ahụ jikọtara ya ga-etolite eutectic alloy.Mgbe emechara ka ọ dị jụụ, a na-ekesa akụkụ ahụ siri ike na lattice nke mejupụtara metal a na-ejikọta ya ma jikọta ya na ibe ya ka ọ bụrụ ihe siri ike.Isi ike nke carbide cimented na-adabere n'ịdị ike nke akụkụ na nha nke ọka, ya bụ, ịdị elu nke usoro nke ike siri ike na nha ọka dị mma, na-esiwanye ike karị.A na-ekpebi ihe siri ike nke carbide cimented site na nchara nke jikọtara ya, na nke dị elu nke ọdịnaya metal nke njikọta, ka ike na-ehulata ka ukwuu.
Njirimara ndị bụ isi nke carbide cimented:
1) High hardness, elu eyi iguzogide
2) High modulus nke elasticity
3) Akwa mkpakọ ike
4) Ezi chemical kwụsie ike (acid, alkali, elu okpomọkụ ọxịdashọn eguzogide)
5) Mmetụta siri ike dị ala
6) Low ọnụọgụ nke mgbasawanye, thermal na eletriki conductivity yiri ígwè na alloys ya
Ngwa carbide cimented: ihe eji eme ihe ọgbara ọhụrụ, ihe ndị na-eguzogide ọgwụ, oke okpomọkụ na ihe na-eguzogide corrosion.
Uru nke ngwaọrụ carbide (tụnyere ígwè alloy):
1) Exponentally, ọtụtụ ma ọ bụ ọbụna narị ugboro iji melite ngwá ọrụ ndụ.
Metal ọnwụ ngwá ọrụ ndụ nwere ike mụbaa site 5-80 ugboro, gage ndụ mụbara site 20-150 ugboro, ebu ndụ mụbara site 50-100 ugboro.
2) Na-abawanye ngwa ngwa ịkpụ ígwè na mkpọpu ihe jikọrọ ọnụ na ọtụtụ iri ugboro.
3) melite akụkụ ziri ezi na elu imecha nke machined akụkụ.
4) Ọ ga-ekwe omume ịhazi ihe siri ike na igwe igwe dị ka alloy na-eguzogide okpomọkụ, alloy mmetụta na ihe nkedo siri ike, nke siri ike ịhazi site na ígwè dị elu.
5) Nwere ike ime ka akụkụ ụfọdụ na-eguzogide corrosion ma ọ bụ elu okpomọkụ na-eguzogide, si otú ahụ na-emeziwanye nkenke na ndụ nke ụfọdụ ígwè ọrụ na ngwá ọrụ.
Nkewa nke Cemented Carbide:
1. WC-Co (tungsten drill) ụdị alloy: mejupụtara tungsten carbide na cobalt.Mgbe ụfọdụ na ngwá ọrụ ịkpụ (mgbe ụfọdụ nakwa na ngwá ọrụ ndu) tinye 2% ma ọ bụ obere nke carbide ndị ọzọ (tantalum carbide, niobium carbide, vanadium carbide, wdg) dị ka ihe mgbakwunye.Cobalt dị elu: 20-30%, ọkara cobalt: 10-15%, obere cobalt: 3-8%
2. WC-TiC-Co (tungsten-iron-cobalt) -ụdị alloy.
Alloy titanium dị ala: 4-6% TiC, 9-15% Co
Ọkara Alloy Chin: 10-20% TiC, 6-8% Co
Alloy titanium dị elu: 25-40% TiC, 4-6% Co
3.WC-TiC-TaC (NbC) -Co alloys.
WC-TiC-Co alloy nwere mma elu okpomọkụ oxidation nguzogide yana mma thermal ujo ọgba aghara, otú na-enwekarị elu ngwá ọrụ ndụ.TiC:5-15%, TaC(NbC):2-10%, Co:5-15%, nke ọzọ bụ WC.
4. Carbide cemented steel: nke mejuputara tungsten carbide ma ọ bụ titanium carbide na carbon ígwè ma ọ bụ alloy ígwè.
5. Titanium carbide dabeere alloy: mejupụtara carbon karịa titanium, nickel metal na molybdenum metal ma ọ bụ molybdenum carbide (MoC).Ngụkọta ọdịnaya nke nickel na molybdenum na-abụkarị 20-30%.
Enwere ike iji Carbide mee rotary burr, CNC agụba, ndị na-egwe ọka, mma okirikiri, mma na-akpụ akpụ, ahịhịa na-arụ ọrụ osisi, ihe ọkụkụ, mkpanaka carbide, wdg.
Oge nzipu: Jul-07-2023