Man shanu na koko ya ƙunshi nau'in fatty acid iri-iri, kuma adadin abubuwan da ke tattare da shi yana haifar da bambanci kai tsaye da sauran mai da mai.Man shanu na koko yana wanzuwa a cikin nau'i na crystalline, kuma siffofin crystalline suna da siffofi da girma daban-daban a yanayin zafi daban-daban, halayyar da aka sani da polymorph.kucrystallization.Akwai4 nau'in crystalna koko man shanu:

γ-type crystal: Matsayin narkewa shine 16 ~ 18 ° C, kuma yana canzawa zuwa nau'in α a cikin kusan daƙiƙa 3.Yana da matuƙar rashin kwanciyar hankali kuma yana da wahalar aiki, don haka ana watsi da shi kai tsaye.

α-nau'in lu'ulu'u (I-type da II-type): Matsayin narkewa shine 17 ~ 23 ° C, kuma yana canzawa zuwa nau'in lu'ulu'u na β' a cikin sa'a daya a zafin jiki.Rubutun laushi, crumbly, sauƙi narke bai dace da amfani ba.

β' nau'in crystal (nau'in III da nau'in IV): wurin narkewa shine 25 ~ 28 ° C, kuma yana canzawa zuwa nau'in β crystal a yanayin zafi na wata ɗaya.Rubutun yana da ƙarfi, ba mai karye ba, kuma yana narkewa cikin sauƙi.

β-nau'in lu'ulu'u (nau'in V-nau'in nau'in VI): Matsayin narkewa shine 33 ~ 36 ° C, kuma rubutun yana da wuya kuma yana da ƙarfi.Daga cikin su, nau'in crystal na nau'in V shine mafi kyawun tsari mai inganci, saboda yana da kwanciyar hankali kuma yana da bayyanar haske;mafi kwanciyar hankali nau'in VI-kristal tare da mafi girman ma'anar narkewa yana da ƙananan barbashi, ƙarancin ɗanɗano, da tabo mai zai bayyana a saman.Bayan lokaci mai tsawo, yanayin cakulan zai bayyanahruwan sanyi.

Baya ga lu'ulu'u na nau'in V, sauran lu'ulu'u ba su da ka'ida a cikin sifa, ba su da ikon yin hulɗa da juna yadda ya kamata, suna da sako-sako da rauni na ciki da kuma hanyar sadarwa mara daidaituwa, wanda ba zai iya kula da yanayin kwanciyar hankali ba, yana sa ƙãre cakulan gaggautuwa da maras ban sha'awa, kuma ma fi muni.yana ƙarfafawa, ko narke sama da zafin ɗaki.Siffar kristal mai siffar V shine hexagon hexagonal, wanda za'a iya tsara shi yadda ya kamata kuma a haɗa shi don samar da daidaituwa mai mahimmanci, don haka ya sa tsarin cakulan ya tsaya da wuya.Wannan shine mabuɗin aikin daidaita yanayin zafi.

Dalilin zafin cakulan shine don pre-crystallize man shanu na koko a cikin cakulan, wanda ke da mahimmanci ga sarrafa cakulan.A lokacin aikin zafin jiki, man shanu na koko a cikin cakulan yana samar da tsayayyen polymorphous Crystallization.Don haka samfurin da aka gama zai sami launi mai haske da rubutu mai wuya.Hakanan yana taimakawa cakulan raguwa yayin sanyaya, yana sauƙaƙa cirewa.

Idan cakulan ya fara sanyi zuwa yanayin aiki mai kyau bayan narkewa (40-45 ° C), samfurin da aka gama ba zai sami launi mai haske ba.Idan kun ɗauki lokaci don kwantar da cakulan da kyau zuwa yanayin zafin aiki daidai, kuna da tabbacin samun ƙarewar da ake so.

LST batch tempering inji da ci gaba da tempering inji an tsara bisa ga crystallization jihar koko man shanu.Sakamakon daidaitawar zafin jiki yana da kyau, sarrafa PLC, kuma za'a iya saita yanayin zafin jiki daidai da samfurori daban-daban, misali, cakulan baki 45-50 ° C zuwa 28-29 ° C, komawa zuwa 30-31 ° C, cakulan madara. 45-48°C zuwa 27-28°C baya zuwa 29-30°C, farin cakulan45-48°C zuwa 26-27°C zafi zuwa 28-29 ° C.Labari na gaba yana gabatar da injunan zafin jiki da na'urori masu ci gaba da daki-daki.