Nkwarụ nkịtị na ihe kpatara Tungsten Carbide Sintering

Sintering na-ezo aka na usoro nke ịtụgharị ihe powdery n'ime nnukwu alloy na bụ ihe dị oke mkpa na usoro mmepụta nke carbide cimented. Enwere ike kewaa usoro tungsten carbide sintering n'ime usoro anọ dị mkpa: mwepụ nke onye na-emepụta ihe na ogbo pre-sintering, ogbo sintering siri ike (800 ℃ - eutectic okpomọkụ), usoro mmiri mmiri (okpomọkụ eutectic - sintering okpomọkụ), na jụrụ oyi. ogbo (sintering okpomọkụ - ụlọ okpomọkụ). Otú ọ dị, n'ihi na usoro nkwụsịtụ dị nnọọ mgbagwoju anya na ọnọdụ ndị siri ike, ọ dị mfe ịmepụta ntụpọ ma belata àgwà nke ngwaahịa. Nrụrụ ndị a na-ahụkarị na ihe kpatara ya bụ ndị a:

1. Nkịta

Carbide simenti nwere ntụpọ peeling na-adịkarị mfe ịgbawa na nzu. Isi ihe kpatara peeling bụ na gas nwere carbon na-emebi carbon efu, na-ebute mbelata ike mpaghara nke ngwaahịa ndị a na-agbanye, na-ebute peeling.

2. Pores

Pores na-ezo aka karịa 40 microns. Isi ihe kpatara ọgbọ nke pores bụ na e nwere ihe ndị na-adịghị ọcha na anụ ahụ nke na-adịghị edozi site na ngwọta metal, ma ọ bụ na-enwe oke nkewa nke usoro siri ike na mmiri mmiri, nke nwere ike ịmepụta pores.

3. Ọnya

Ọnya ahụ ga-eme ka elu convex dị na carbide cimented, si otú a na-ebelata arụmọrụ nke ngwaahịa tungsten carbide. Isi ihe mere e ji guzobe egosipụta sintered bụ:

1) Ikuku na-agbakọba n'ime ahụ nke e mebiri emebi. N'oge usoro nke sintering shrinkage, ahụ sintered na-egosi mmiri mmiri na-agba ọsọ na densifies, nke ga-egbochi ikuku si n'ikuku, na mgbe ahụ na-etolite slumped egosipụta n'elu nke sintered ahu na kacha nta iguzogide;

2) Enwere mmeghachi omume kemịkalụ nke na-ebute oke gas n'ime ahụ a kpụrụ akpụ, gas na-etinyekwa n'ime ahụ nke emechiri emechi, na ọnya na-esite n'okike.

4. Nrụrụ

Ihe na-emekarị nrụrụ nke carbide cimented bụ ọnya na concave. Isi ihe kpatara nrụrụ ahụ bụ nkesa njupụta na-ekwekọghị ekwekọ nke kọmpat etinyere. Enweghị ụkọ carbon siri ike n'ime ahụ mebiri emebi, ịkwanye ụgbọ mmiri enweghị ezi uche, na efere nkwado na-ezighi ezi.

5. Ebe etiti ojii

Ebe etiti ojii na-ezo aka na akụkụ nke nwere nzukọ rụrụ arụ na mgbaji alloy. Isi ihe kpatara obi ojii bụ carburizing ma ọ bụ decarburization.

6. Mgbawa

Crack bụ ihe a na-ahụkarị na nhazi nke carbide simenti. Isi ihe kpatara mgbawa bụ:

1) Ntụrụndụ nrụgide adịghị egosi ozugbo mgbe billet akpọnwụwo, na mgbake na-agbanwe ngwa ngwa n'oge sintering;

2) A na-eme ka billet ahụ na-ekpo ọkụ na-ekpo ọkụ mgbe a mịrị amị, na mgbasawanye okpomọkụ nke akụkụ oxidized dị iche na nke akụkụ ahụ na-adịghị.

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.