Vermicular cast iron ea thepa ea valve

Vermicular cast iron ea thepa ea valve

Sekala sena se hlalosa lipehelo le litlhaloso, limaraka, litlhoko tsa tekheniki, lisampole le li-block tsa liteko, mekhoa ea liteko, melao ea tokiso, boitsebahatso ba ho lahla, ho paka, ho boloka le litlhoko tsa lipalangoang. Mokhoa oa tlhahiso le sebopeho sa lik'hemik'hale tsa tšepe ea vermicular cast li lokela ho khethoa ke mofani oa thepa ho netefatsa hore boemo bo hlokahalang ba thepa le ts'ebetso li lumellana le sekala sena. Ha tšepe ea vermicular cast e na le lisebelisoa le litlhoko tse khethehileng, motsoako oa lik'hemik'hale le phekolo ea mocheso li ka lumellana le mahlakore ka bobeli. Vermicular cast iron e lokela ho hlokomeloa hore e na le bonyane 80% graphite ea vermicular sefofaneng sa eona se bentšitsoeng sa mahlakore a mabeli, 'me karolo e setseng ea 20% e lokela ho ba graphite e chitja, graphite e kopantsoeng le graphite ea flake ha ea lokela ho lumelloa.

mefuta-futa

Sekala sena se hlalosa lipehelo le litlhaloso, limaraka, litlhoko tsa tekheniki, lisampole le li-block tsa liteko, mekhoa ea liteko, melao ea tokiso, boitsebahatso ba ho lahla, ho paka, ho boloka le litlhoko tsa lipalangoang.

Sekala sena se loketse ho sebelisoa ha ho etsoa hlobo ea vermicular graphite cast iron e nang le hlobo ea lehlabathe kapa ka conductivity ea mocheso e lumellanang le hlobo ea lehlabathe. Coil cast iron e hlahisoang ke mekhoa e meng ea ho qhekella e ka sebelisoa e le litšupiso.

Tokomane e tloaelehileng ea litšupiso

Litokomane tse latelang li bohlokoa bakeng sa tšebeliso ea tokomane ena. Bakeng sa litšupiso tsa nako, mofuta oa khale o sebetsa tokomaneng ena. Phetolelo ea tokomane e sa ngolisoang ka nako (ho kenyeletsoa le liphetoho tsohle) e tla sebelisoa bakeng sa tokomane ena.

GB/T 228 Lisebelisoa tsa tšepe - mokhoa oa ho etsa liteko ka mocheso oa kamore (GB/T 228-2002,eqv ISO 6892:1998)

Lisebelisoa tsa tšepe - Liteko tsa boima ba Brinell - Karolo ea 1: Mekhoa ea liteko (GB/T 231.1-2009, ISO 6506-1:2005, MOD)

GB/T 5611 Forging terms

Mokhoa oa boemeli ba boemo ba tšepe ba GB/T 5612 (GB/T 5612-2008, ISO 15931; 2004, MOD)

Sample forging surface (GB/T 6060.1-1997,eqv ISO 2632-3:1979)

Mamello ea maemo le litumello tsa Machining bakeng sa Castings (GB/T 6414-1999,eqv ISO 8062:1994)

GB/T 11351 ho mamella boima ba 'mele

GB/T 26656 vermicular cast iron metallography tokiso

Melao le litlhaloso

Mantsoe a thehiloeng ho GB/T 5611 'me mantsoe le litlhaloso tse latelang li sebelisoa bakeng sa tokomane ena.

Vermicular cast iron

Khabone e fumaneha haholo ka sebopeho sa graphite ea vermicular e tsoang ho tšepe e entsoeng ka matrix ea tšepe.

Kalafo ea creep

Ts'ebetso eo ho eona ho eketsoang ntho e kenang ka har'a tšepe e metsi ho fana ka graphite e kang seboko nakong ea ho tiea.

Botenya ba lebota bo ka sehloohong

Botenya bo boholo ba lerako la ho lahla bo bolela botenya ba karolo ea ts'ebetso ea mochini oa lisebelisoa tsa ho lahla kapa botenya ba karolo e kholo ea ho lahla, e lumellanang le mahlakore ka bobeli.

letšoao

Sehlopha sa thepa se tla emeloa ho latela litlhaloso tsa GB/T 5612.

Sekala sena, vermicular graphite cast iron e arotsoe ka limaraka tse 5 ho latela mokhoa oa mochini oa lisampole tse sebetsoang ke samente e le 'ngoe kapa ka li-block tsa liteko tsa cast (bona Letlapa la 1 le Lethathamo la 2).

Odara tlhahisoleseding

Mofuta oa thepa ea ho lahlela e hlokoang ke Demander.

Botenya bo boholo ba lerako la mosebetsi oa ho lahla joalo ka ha ho lumellane le mahlakore ka bobeli.

Litlhoko tse ling tse khethehileng tse lumellaneng ke mahlakore ka bobeli.

Tlhahiso le tlhahiso

Mokhoa oa tlhahiso le sebopeho sa lik'hemik'hale tsa tšepe ea vermicular cast li lokela ho khethoa ke mofani oa thepa ho netefatsa hore boemo bo hlokahalang ba thepa le ts'ebetso li lumellana le sekala sena. Ha tšepe ea vermicular cast e na le lisebelisoa le litlhoko tse khethehileng, motsoako oa lik'hemik'hale le phekolo ea mocheso li ka lumellana le mahlakore ka bobeli.

Tlhokahalo ea tekheniki

Thepa ea mochini oa sampole e le 'ngoe

Thepa ea mochini oa lisampole tse le 'ngoe tsa tšepe ea vermicular cast e lokela ho lumellana le tlhaloso e hlahang ho Lethathamo la 1.

Ka kakaretso, 0.2% ea tlhahiso ea matla Rpo ha e sebelisoe e le motheo oa ho amoheloa. Ha motho ea batlang a e-na le litlhoko tse khethehileng, e ka boela ea khethoa.

Letlapa la 1 Ts'ebetso ea mochini oa sampole e le 'ngoe

Mosebetsi oa mochine oa setšoantšo sa cast

Thepa ea mochini ea lisampole tsa tšepe ea vermicular cast e tla ikamahanya le tlhaloso ho Lethathamo la 2.

0.2% matla a lihlahisoa Rpo hangata ha e sebelisoe e le motheo oa ho amoheloa. Ha motho ea batlang a e-na le litlhoko tse khethehileng, e ka boela ea khethoa.

Letlapa la 2 Ts'ebetso ea mochini oa sampole e entsoeng

Mosebetsi oa mochini oa sampole ea 'mele

Boemo ba tšepe ea vermicular cast e nang le li-block tsa liteko holim'a ho lahla ho tla nahanela sebopeho sa ho lahla le sebopeho sa tsamaiso ea ho tšela, e le ho qoba liphello tse mpe mesebetsing ea likarolo tse haufi, 'me molao-motheo ha oa lokela. ama mosebetsi oa sebopeho sa ho lahla, ponahalo ea boleng ba ho lahla le ho teteana ha li-block tsa liteko. Thibelo ea teko e tla nkuoa karolong ea thobalano ea casting. E le ho fumana boholo ba sampuli, moreki o tla bontša mofani oa thepa karolo ea bohlokoa ea ho lahla. Haeba motho ea batlang a se na maikutlo a leeme, mofani oa thepa a ka beha boemo ba ho itšeha holim'a ho lahla le ho fumana bophara ba sampuli.

Ho phahamisa: tšepe ea vermicular cast bakeng sa lisebelisoa tsa Valve (I)

Ka boloko ba liteko tsa cast

Li-castings tseo boloko ba liteko li kenngoeng ho tsona le tsona ke li-castings tsa beche e le 'ngoe e nang le botenya bo tšoanang ba lebota.

Ka kakaretso, ha boima ba ho lahlela bo feta 2000kg, 'me botenya ba lebota bo le 30mm ~ 200mm, ho khethoa ho hokela boloko ba tlhahlobo ea ho lahla. Ha boima ba ho lahla bo feta 2000kg mme botenya ba lebota bo le 200mm, ho sebelisoa block e khomaretsoeng ea liteko. Boholo le boemo ba thibelo ea liteko tsa cast li tla lumellanoa ke mahlakore ka bobeli.

Ntle le ha ho hlalositsoe ka tsela e 'ngoe ke mahlakore ka bobeli, sebopeho le boholo ba boloko ba liteko tse khomaretsoeng li bonts'oa setšoantšong

Boemo ba tlatsetso ea thibelo ea teko ea ho lahla holim'a ho lahla e lokela ho ela hloko sebopeho sa ho lahla le sebopeho sa tsamaiso ea ho tšela, e le ho qoba liphello tse mpe mesebetsing ea likarolo tse haufi, 'me ha li ame mosebetsi oa moralo. ea ho lahla, boleng ba ponahalo ea ho lahla le ho teteana ha thibelo ea teko e le molao-motheo.

Li-blocks tsohle tsa liteko li lokela ho tšoauoa ka mokhoa o hlakileng ho netefatsa hore boleng ba ho lahla bo ka lateloa ts'ebetsong eohle.

Ha li-castings li hloka phekolo ea mocheso, li-castings tse khomaretsoeng li tla aroloa ho li-castings ka mor'a phekolo ea mocheso ntle le haeba ho lumellane ka tsela e 'ngoe ke lihlopha. otlolla

Tlhaloso:

Bokhoni ba ho ja lehlabathe ba ho etsa liteko tsa thibelo: mofuta Ⅰ, Ⅱa le Ⅱb li nyane ka 40 mm; Mofuta Ⅲ o monyenyane 80mm

Tlhokomeliso: Bakeng sa lintho tse entsoeng ka lerako le tšesaane kapa tsa tšepe, sampole e ka nkuoa bolokong ba tlhahlobo ea u12.5mm, 'me tšebetso ea mochini e ka lumellanoa ke mahlakore ka bobeli.

Diyuniti tsa boholo ba boloko ba I le U ke dimilimithara

Tlhaloso:

Teko ea liteko e lahlela terei ea ho ja: mofuta oa I, mofuta oa II o monyenyane 40mm; Mofuta Ⅲ Nyenyane 80mm,

Tlhokomeliso: Bakeng sa li-castings tse nang le marako a tšesaane kapa a tšepe, sampole e ka nkuoa ho u

Thibelo ea tlhahlobo ea 'mele

Mosebetsi oa mochine oa karolo e boletsoeng ea ho lahla o tla lumellana le mahlakore ka bobeli. Mesebetsi ena e tla lekanyetsoa ho tloha ho sampuli e khaotsoeng ho tloha karolong e boletsoeng ea ho lahlela. Sample diameter e tla lumellanoa ke mahlakore ka bobeli. Boholo ba sampole ea tensile bo bontšoa ho FIG. 4 le Lethathamo la 6

Thibelo ea teko e tla nkuoa karolong ea thobalano ea casting. E le ho fumana boholo ba sampuli, moreki o tla bontša mofani oa thepa karolo ea bohlokoa ea ho lahla. Haeba motho ea batlang a se na maikutlo a leeme, mofani oa thepa a ka beha boemo ba ho itšeha holim'a ho lahla le ho fumana bophara ba sampuli.