Indlela Yokuhlonza Ngokushesha yekhwalithi ye-Nodular Cast Iron Spheroidizing

Ukuhlolwa ngaphambi kwesithando somlilo

Ukuhlolwa ngaphambi kwesithando somlilo se-ductile iron kuyingxenye ebaluleke kakhulu yenqubo yokukhiqiza, futhi kuhlobene ngqo nekhwalithi yezingxenye zensimbi ye-ductile. I-spheroidization yensimbi encibilikisiwe ingahlulelwa ngesikhathi esifanele futhi ngokunembile, futhi izinyathelo zingathathwa ngokushesha ukulawula ikhwalithi ye-nodular cast iron. Ukwahlulela kabi phambi kwesithando somlilo kuzodala ukuthi inani elikhulu labaphoswayo lisulwe futhi kuchitheke ukubumba amahora omuntu. Ngakho-ke, ukwahlulela okufika ngesikhathi nokunembile kwe-spheroidization phambi kwesithando somlilo kubaluleke kakhulu kunokuhlolwa ngemuva kwesithando somlilo. Kunezindlela eziningana ezisetshenziswa kakhulu ekukhiqizweni kwangempela ukubheka i-spheroidization yensimbi encibilikisiwe ngaphambi kwesithando somlilo.

1 Surface crust kanye nelangabi ukwahlulela indlela

Insimbi ejwayelekile yomhlaba we-magnesium nodular cast inokuqukethwe okuphansi kwe-magnesium nezakhi zomhlaba ezingavamile. Ubuso bensimbi encibilikile buhlukile kunensimbi emsulwa ye-magnesium nodular cast. Asikho isikali se-oxide esingaka ebusweni, futhi ilangabi alinamandla amakhulu futhi alinamandla kangako. Kodwa-ke, lapho i-1/3 yensimbi encibilikisiwe ingezwa, ukukhanya kwe-magnesium nelangabi elimhlophe kuzophuma ebusweni obuketshezi, obufana nekhandlela. Ngokuya ngenombolo nokuphakama kwelangabi, isimo se-spheroidization nenani eliyinsalela le-magnesium liyahlulelwa. Lapho ilangabi liphakeme futhi linamandla amakhulu, kukhombisa ukuthi ukwenziwa kwe-spheroidization kuhle. Ikakhulukazi lapho uthela, insimbi eshisayo ingabonakala ekugelezeni kwensimbi encibilikisiwe, uma ukuphakama kufinyelela kuma-25 ~ ffice: ama-smarttags "/> 50mm, i-spheroidization yinhle; uma ilangabi lingaphansi kuka-15mm, i-spheroidization ayisihle. Ebusweni bensimbi encibilikisiwe ebunjiwe, kwakhiwa ifilimu le-oxide futhi kunamabala agqamile esiliva amhlophe, okusho ukuthi i-spheroidization yinhle.Kodwa uma ifilimu ye-oxide inkulu kakhulu, kusho ukuthi izinga lokushisa insimbi iphansi.

2 Indlela engunxantathu yokuvimba

Njengamanje, kuyindlela esetshenziswa kakhulu ukwahlulela i-spheroidization ngokubheka ibhulokhi yokuhlola. Amabhulokhi wokuhlola asetshenziswa amafemu ahlukahlukene anezimo eziningi nosayizi ohlukile, futhi amafemu amaningi asebenzisa amabhlogo wokuhlola ongunxantathu. Ngokuya ngezimpawu zokukhiqiza zefektri yethu, ubukhulu nobukhulu bokusakazwa, ubukhulu bendawo enqamulelayo yebhulokhi yokuhlola engunxantathu ingu-12.5mm (ezansi) × 50mm ((ukuphakama). Amanye amafektri asebenzisa amabhlogo wokuhlola nxazonke, njenge I-Ф15mm, Ф25mm, Ф30mm. Insimbi.Ngemva kokuba ukwelashwa kuketshezi sekuqediwe, sebenzisa isipuni sesampula ukukhipha uketshezi ebusweni bensimbi ebunjiwe engu-200mm ngaphansi kobuso bese uyithela endaweni yokuhlola bese uyipholisa ibe bomvu obomvu ngaphambi kokucishwa kwamanzi. Umbuthano wangaphandle webhola elihle mkhulu kakhulu kunensimbi eyimpunga. Ukubukeka kuhlanzekile, kuyakhanya futhi kunesihlabathi kakhulu. Ibhulokhi yokuhlola unxantathu emile ine-shrinkage ezinhlangothini zombili zobubanzi be-block ovundlile noma indawo yokuhlola encanyana izinhlangothi zombili. Ngemuva kokupholisa nokungqongqoza, i-spheroidization yinhle, futhi ingubumba ophuzi obumhlophe noma obuyisiliva. Ithiphu icacile futhi umlomo omhlophe ukhululekile phakathi. Umbala osiliva-mhlophe onephethini ye-radial, ophakeme kakhulu umenzeli wil l khiqiza ama-carbides amaningi. Ngalesi sikhathi, lapho kufakwa ibhulokhi yokuhlola, izokwenza umsindo "wokushaya kancane". Ucezu lokuhlola luzophuka lapho lucofwa kancane futhi i-calcium carbide esanda kuthephelwa izoba nomlomo ojiyile kakhulu. Iphunga, ngakho-ke, kungcono ukuntanta i-silicon ngenkathi uthela. Uma umlomo unompunga osiliva futhi kunamabala amnyama asatshalaliswa ngokulinganayo, i-crystal enemibala uma yephukile.

Qaphela:

• 1) Ibhulokhi yokuhlola unxantathu evundile izoba nephunga le-calcium carbide ngokushesha ngemuva kokuphazanyiswa ukucima.
• 2) Ukujula komlomo omhlophe kuhlobene nohlobo nohlobo lwensimbi ye-ductile nokwakheka kwensimbi encibilikisiwe. Ngakho-ke, ayikho idatha enikezwa etafuleni. Ukujula komlomo omhlophe kwensimbi engavamile ye-magnesium ductile akucaci kahle.

3 Ukwahlulelwa kwenqubo yokuthela

• (1) Ngemuva kokuthi insimbi encibilikisiwe ye-ductile ithululelwe kusikhunta, uma inkomishi ye-sprue ihlehlisiwe phansi futhi indawo ibushelelezi kakhulu, kukhombisa ukuthi i-spheroidization yinhle; uma ingxenye ephezulu yenkomishi ye-sprue inegobolondo eliqinile, nayo izokwehliswa. Ukushisa kwensimbi encibilikile kuphansi.
• (2) Ngesikhathi senqubo yokuthela, kunemigodi (imigodi) entanyeni eyindilinga efafazwe ebusweni besikhunta sesihlabathi, okukhombisa ukuthi i-spheroidization yinhle.

4 Indlela yokuhlonza onqenqemeni olumnyama

Ngemuva kokucutshungulwa kwebhola, sebenzisa isipuni sesampula ukuthela ibhulokhi yokuhlola ngobukhulu obucishe bube ngu-10mm, bese uyipholile ibe bomvu ngokumnyama. Ngemuva kokucima nokuphula, uma kutholakala unqenqema olumnyama engxenyeni engenhla yebhulokhi yokuhlola, kusho ukuthi i-spheroidization ayiyinhle, futhi mkhulu umphetho omnyama, ibhola Okubi kakhulu ukuncibilika, ukwehla kwamandla omnotho kuzokwenzeka. Ngalesi sikhathi, uma izinga lokushisa lensimbi encibilikile liphezulu, ingxube ingafakwa. Kungabonakala futhi ku-block block ukuthi uma ubungako be-block block benziwe njenge-arc obunokucindezeleka phakathi, futhi eminye imibimbi ikhona, kukhombisa nokuthi ukwenziwa kwe-spheroidization kuhle; uma kunamachashazi afana nesikhumba kakolweni ngaphezulu kwendawo evivinywayo, kukhombisa ukuthi i-iron encibilikisiwe yenziwe i-oxidized futhi kulula ukubola. Kulokhu, isithando somlilo kufanele siguqulwe.

5 Bheka isimo sokuqina kwensimbi encibilikisiwe

Ngemuva kokuphothulwa kwe-spheroidization, khipha inani elincane lensimbi encibilikisiwe ulithele kusikhunta sensimbi esingu-mm30mm. Bheka ukuvela kwensimbi encibilikisiwe ebusweni ngesikhathi sokuqina, bese wahlulela ukuqina kwensimbi encibilikisiwe ngokuya ngenani lensimbi encibilikisiwe. Insimbi encibilikisiwe enhle eyenziwe nge-spheroidized ibonisa amandla amakhulu wokunweba we-graphite ngesikhathi sokuqina. Ubuso bensimbi encibilikisiwe buyehla kancane ekuqaleni kokuqina, bese kuthi inani elincane lensimbi encibilikisiwe liphume kuleli cwecwe ngemuva kokuthi ubuso bugcotshiwe; kuyilapho insimbi encibilikisiwe ecekeceke kahle yesinombolo Inani lama-gushes avela ebusweni lincane.

6 Ukuqaphela okusheshayo kwe-metallographic phambi kwesithando somlilo

Izindlela ezibalulwe ngenhla zonke zisebenzisa izici ezithile zensimbi ye-ductile ukwahlulela ngokungaqondile i-spheroidization, kepha izimo ezahlukahlukene ekukhiqizweni ziyahlukahluka kakhulu, futhi izindlela ezichazwe zinemikhawulo, futhi ukubonwa kwe-metallographic okusheshayo okuphambi kwesithando somlilo kungagwema izici eziningi. Ukungenelela, bheka ngqo isimo se-spheroidization.

Ukuhlolwa kwe-Metallographic ngemuva kwesithando somlilo

• (1) Ukuhlolwa kwe-post-metallographic ikakhulukazi kubheka ukwakheka kwezinto ezincane ezifana ne-graphite morphology kanye ne-sub-featured metal matrix structure inclusions. Ngokuhlaziywa kwe-metallographic, inani lezingxenye eziphukile lingasetshenziswa njengesisekelo sokwenza ngcono ikhwalithi yokusakaza.
• (2) Ukuhlaziywa kwamakhemikhali komhlaba ongavamile we-magnesium spheroidal graphite cast iron kungashiwo ukuthi kuyindlela yokuthola. Uma kutholakala inkinga, abasebenzi be-batching bangenza ukulungisa okufanelekile ukugwema izinkinga ezinkulu zekhwalithi. Ngaphezu kwalokho, kunokuhlolwa kwezakhiwo zemishini nokuhlolwa okungonakalisi izingxenye zensimbi ye-ductile.

Isiphetho

Ukuhlola i-ductile iron, indlela yokuhlola yendabuko "yokuhlaziywa kwangemva kwesithando somlilo" kufanele iguqulwe ibe "ukuhlolwa kwangempela kwe-inthanethi." Njengebhizinisi elikhulu naphakathi nendawo, ukusetshenziswa kwezindlela zokuhlola ezithuthukisiwe ekhaya nakwamanye amazwe ukucacisa ngokunembile isimo se-spheroidization kuyisiqinisekiso esithembekile sokwenza ngcono ikhwalithi yokusakaza. Kodwa-ke, kumabhizinisi amancane, ikakhulukazi amabhizinisi asemalokishini aqhamuka ngokushesha, kusabaluleke kakhulu ukusebenzisa isici esithile sensimbi ye-ductile ukwahlulela ngokungaqondile ukwenziwa komoya.

Sicela ugcine umthombo nekheli lale ndatshana ukuze uphinde uprintwe: Indlela Yokuhlonza Ngokushesha yekhwalithi ye-Nodular Cast Iron Spheroidizing

UMinghe Inkampani yeDie Casting anikezelwe ekukhiqizeni nasekuhlinzekeni ikhwalithi nokusebenza okuphezulu Izingxenye Zokulingisa (izingxenye zensimbi zensimbi zokufa zisebenza ikakhulukazi zibandakanya I-Thin-Wall Die Casting,I-Hot Chamber Die Casting,Cold Chamber die Casting), Insizakalo Eyindilinga (Insiza Yokulingisa,ICnc Machining,Ukwenza Okubandayo, Surface Treatment) .Noma ikuphi ukusakazwa kwe-Aluminium die, i-magnesium noma i-Zamak / zinc die casting nezinye izidingo zokuphosa zamukelekile ukuxhumana nathi.

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