Ụzọ abụọ nke Sintering

Ngwaahịa Tungsten carbide mejupụtara tungsten carbide na ihe ndị ọzọ iron dị ka cobalt dị ka ihe nkedo. Enwere ike iji ngwaahịa Tungsten carbide mee ihe n'ọtụtụ ebe n'ịcha ọla, ihe ọkụkụ mmanụ, na ịkpụ ígwè.

Ekwesịrị ijikwa nke ọma nke ọma iji nweta microstructure na kemịkalụ nke Tungsten carbide. N'ọtụtụ ngwa, tungsten carbide na-eme site na ntụ ntụ metallurgy, nke gụnyere sintering. Ngwaahịa Tungsten carbide na-eguzogidekarị iyi na nkwụsịtụ na gburugburu ebe siri ike. N'ọtụtụ ngwa ịkpụ ígwè, a na-ekpebi na a ga-ewepụ ndị na-egbutu tungsten carbide nwere ihe karịrị 0.2-0.4 mm. Ya mere, ihe onwunwe nke tungsten carbide dị mkpa.

Enwere ụzọ abụọ bụ isi maka ngwaahịa tungsten carbide. Otu bụ hydrogen sintering, nke ọzọ bụ vacuum sintering. Hydrogen sintering na-achịkwa ihe mejupụtara akụkụ site na usoro mmeghachi omume kinetics na hydrogen na nrụgide; vacuum sintering na-achịkwa ngwakọta nke tungsten carbide site na ibelata mmeghachi omume mmeghachi omume n'okpuru oghere ma ọ bụ ikuku ikuku dị ala.

Vacuum sintering nwere ọtụtụ ngwa mmepụta ihe. Mgbe ụfọdụ, ndị ọrụ nwere ike tinye ọkụ isostatic pressing, nke dịkwa mkpa maka imepụta ngwaahịa tungsten carbide.

N'oge hydrogen sintering, hydrogen bụ ibelata ikuku ikuku. Hydrogen nwere ike meghachi omume na mgbidi ọkụ ma ọ bụ graphite na-emegharị ma gbanwee ihe ndị ọzọ.

E jiri ya tụnyere hydrogen sintering, vacuum sintering nwere uru ndị a.

Nke mbụ, vacuum sintering nwere ike ijikwa ihe mejupụtara ngwaahịa ahụ nke ọma. N'okpuru nrụgide nke 1.3 ~ 133pa, mgbanwe mgbanwe nke carbon na oxygen n'etiti ikuku na alloy dị nnọọ ala. Isi ihe na-emetụta ihe mejupụtara ya bụ ikuku oxygen dị na ihe ndị dị na carbide, yabụ na-eme ka oghere oghere nwere nnukwu uru na mmepụta mmepụta nke tungsten carbide sintered.

Nke abuo, n'oge ikpochapu oghere, ọ na-agbanwe agbanwe iji chịkwaa usoro ihe ọkụkụ, karịsịa ọnụ ọgụgụ kpo oku, iji gboo mkpa nke mmepụta. Vacuum sintering bụ ọrụ ogbe, nke na-agbanwe karịa hydrogen sintering.

Mgbe ị na-emepụta ngwaahịa tungsten carbide, tungsten carbide ga-enweta usoro ndị a:

1. Mwepụ nke onye na-akpụzi ihe na ogbo tupu ọkụ;

Na usoro a, okpomọkụ kwesịrị ịbawanye nwayọọ nwayọọ, na nke a na-eme n'okpuru 1800 ℃.

2. Ogbo sintering siri ike

Ka okpomọkụ na-eji nwayọọ nwayọọ na-amụba, nkwụsịtụ na-aga n'ihu. Nke a ogbo pụtara n'etiti 1800 ℃ na eutectic okpomọkụ.

3. Liquid frasi sintering ogbo

N'oge a, okpomọkụ na-aga n'ihu ruo mgbe ọ na-erute okpomọkụ kachasị elu na usoro nsị, okpomọkụ na-ekpo ọkụ.

4. Ogbo oyi

Carbide cimented, mgbe ọ gbasasịrị, enwere ike wepu ya na ọkụ ọkụ ma mee ka ọ dị jụụ n'ime ụlọ.

Ọ bụrụ na ị nwere mmasị na ngwaahịa tungsten carbide ma chọọ ozi ndị ọzọ na nkọwa, ị nwere ike ịkpọtụrụ anyị site na ekwentị ma ọ bụ mail n'aka ekpe, ma ọ bụ zipu ozi US na ala nke ibe.