Yanayin Sintering a cikin MIM

Halin yanayi yayin aiwatar da sintering shine maɓalli na fasaha na MIM, yana yanke shawarar sakamakon ƙaddamarwa da aikin ƙarshe na samfuran.A yau, za mu yi magana game da shi, Yanayin Sintering.

Matsayin yanayi na sintiri:

1) Yankin Dewaxing, cire mai mai a cikin koren jiki;

2) Rage oxides kuma hana oxidation;

3) Guji decarburization samfurin da carburization;

4) Guji oxidation na samfurori a cikin yankin sanyaya;

5) Kula da matsi mai kyau a cikin tanderun;

6) Kula da daidaiton sakamakon sintering.

Rarraba yanayi na sintiri:

1) Oxidizing yanayi: Pure Ag ko Ag-oxide composite kayan da sintering na oxide yumbu: Air;

2) Rage yanayi: Sintering yanayi dauke da H2 ko CO aka gyara: Hydrogen yanayi domin siminti carbide sintering, Hydrogen-dauke da yanayi ga baƙin ƙarfe tushen da jan karfe tushen foda metallurgy sassa (ammoniya bazuwar gas);

3) Inert ko tsaka tsaki yanayi: Ar, He, N2, Vacuum;

4) Carburizing yanayi: yana ƙunshe da manyan abubuwan da ke haifar da carburization na jikin da ba a sani ba, kamar CO, CH4, da gas na Hydrocarbon;

5) Yanayi na tushen Nitrogen: Tare da babban abun ciki na nitrogen singtering yanayi: 10% H2+N2.

Gas Mai Gyara:

Amfani da iskar gas (gas na halitta, gas na man fetur, iskar gas na coke) azaman albarkatun ƙasa, ta amfani da iska ko tururin ruwa don amsawa a babban zafin jiki, da sakamakon H2, CO, CO2, da N2.Ƙananan gwangwani na gauraye gas na CH4 da H2O.

Gas Exothermic:

Lokacin shirya iskar gas mai gyara, iskar gas da iska na ɗanyen abu suna wucewa ta cikin mai canzawa a wani kaso.Idan rabo daga iska zuwa albarkatun kasa gas ne high, zafi saki a lokacin dauki ya isa ya kula da dauki zazzabi na Converter, ba tare da bukatar waje ga reactor dumama, sakamakon tuba gas.

Gas Endothermic:

Lokacin shirya iskar gas ɗin da aka gyara, idan rabon iska zuwa ɗanyen gas ya yi ƙasa, zafin da aka fitar a lokacin amsawar bai isa ba don kula da yanayin zafin mai gyara, kuma injin yana buƙatar samar da zafi daga waje.Gas din da aka gyara ana kiransa Endothermic Gas.

TheYanayi mai yuwuwar Carbonshi ne dangi na carbon abun ciki na yanayi, wanda yayi daidai da abun ciki na carbon a cikin kayan lokacin da yanayi da kayan da aka yi da su tare da wani nau'i na carbon sun kai ga ma'auni na amsawa (babu carburization, babu decarburization) a wani zafin jiki.

Da kumaYanayi mai yuwuwar Carbon Mai Sarrafawashine kalmar gabaɗaya don matsakaicin iskar gas da aka gabatar a cikin tsarin sintiri don sarrafawa ko daidaita abun ciki na carbon na sintered karfe.

Maɓallan don sarrafa adadin CO2 da H2Oa cikin yanayi:

1) Sarrafa H2O adadin raɓa

Ma'anar Dew: Yanayin zafin da tururin ruwa a cikin yanayi ya fara tattarawa cikin hazo a ƙarƙashin ma'aunin yanayi.Yawan ruwa a cikin yanayi, mafi girman raɓa.Za'a iya auna ma'aunin raɓa tare da mitar raɓa: ma'aunin ɗaukar ruwa ta amfani da LiCI.

2) Sarrafa adadin CO2 kuma auna ta hanyar mai nazarin shayarwar infrared.