Barka dai, abokai! Mu ƙwararru nepowdered karfe sassa masana'antun a kasar Sin. Muna da yawafoda metallurgy sintering na aka gyara. A matsayin mai ƙera ƙarfe na foda, zan gaya muku yadda tsarin keɓancewa a cikin ƙarfe na ƙarfe!
Sintering tsari a cikin foda metallurgyjurewa jerin jiki da sunadarai canje-canje, kamar ruwa ko Organic evaporation ko volatilization, adsorption gas purging, da kawar da danniya, da foda barbashi surface oxide rage, intergranular abu hijirarsa, recrystallization da hatsi girma, don haka yin crystal dubawa tsakanin barbashi ƙaruwa, da pore raguwa ko ma bace. Lokacin da yanayin ruwa ya bayyana, rushewa da hazo na lokaci mai ƙarfi shima zai faru. Waɗannan matakai ba su da fayyace iyakoki tare da juna, amma suna mamaye juna da tasiri. Bugu da ƙari ga sauran sintering a cikin ƙarfe, halayen duk samfuran da aka yi ta hanyar ƙarfe na foda yana da rikitarwa. A cikin 1942, GF Schutig na Jamus ya yi amfani da hanyoyin bincike na jiki da na sinadarai don auna tasirin zafin jiki akan ƙarfin electromotive, solubility, density, microstructure, kayan inji na jikin da aka yi da shi, kuma ya gano cewa sintering tsari ne mai rikitarwa. A shekara ta 1949, GCKuczynski na Amurka ya yi nazarin yadda ake sarrafa ƙwallo da faranti na ƙarfe kuma ya yi imanin cewa ƙaura a lokacin sintering ana yin ta ne ta hanyar watsawa. Ayyukan su sun tura nazarin ka'idar sintering zuwa wani sabon mataki. Yawancin ayyukan bincike na gaba sun mayar da hankali kan tsarin ƙaura na kayan aiki yayin sintering.
An yi imani da cewa akwai hanyoyi guda biyar na ƙaura na kayan aiki yayin sintering: danko ko kwararar filastik, evaporation da condensation, yaduwar girma, yaduwar iyakar hatsi, da kuma yaduwar ƙasa. Lokacin da aka yiwa yawan barbashi biyu, haɓakar kai tsaye, radius na lamba x na iya dangantaka da lokacinta T kamar haka:
Tsarin sintiri dole ne a gudanar da aikin sintering a cikin tanderun da ke da iska mai karewa don guje wa oxidation na jikin da aka yi da shi ko kuma mummunan halayen sinadarai. Akwai nau'o'in murhun wuta da yawa, waɗanda za a iya amfani da su azaman tushen zafi kamar iskar gas, gas, mai da wutar lantarki. Tanderun dumama lantarki yana da tattalin arziki da dacewa, mai sauƙin daidaitawa da sarrafawa. Yanayin kariya da aka saba amfani da shi shine vacuum, argon, helium, nitrogen, carbon dioxide da sauran iskar gas da hydrogen, bazuwar ammonia, carbon monoxide, jujjuya iskar gas da sauran iskar gas.
Don ƙara haɓaka aikin samfuran sintered da girman da daidaiton siffar, sau da yawa ya zama dole don aiwatar da siffa, ƙarewa, matsawa, nutsewar mai, sarrafa injin, magani mai zafi da sauran hanyoyin da suka biyo baya.
Tsarin gyare-gyaren allura yana gudana
Lokacin aikawa: Jul-29-2022