Ukubaluleka nokuklanywa kwentamo ye-Iron Riser

1. Amaphoyinti wokuqamba we-Iron Riser Couse anjengokulandelayo:

Ububanzi obukhulu bokuzimisela: ububanzi bentambo ye-riser imvamisa izikhathi ezi-0.3-0,8 ububanzi bendilinga yendawo eshisayo yokuphonsa. Ububanzi bendilinga yendawo eshisayo ye-casting bukhulu, ngenani elinobandlululo lubheke ku-0.3; Ububanzi bendilinga yeSpofaza eshisayo buncane, ngenani elinobandlululo lubheke ku-0.8. Ubude: imvamisa phakathi kuka-20-50mm. Ezingxenyeni ezincane zensimbi ephonsa, ubude bentambo ye-riser bungathathwa njengomkhawulo ophansi; Izingxenye ezinkulu ze-cast zeron zingaphansi komkhawulo ophezulu. Izimo ezijwayelekile zokuklanywa kokwakheka zifaka phakathi i-cylindrical, trapezoidal, njll. Intamo yama-cylindrical riser kulula ukuyicubungula futhi ilungele izimo eziningi; Intamo ye-Trapezoidal Riser inenzuzo yokunxephezela i-shrinkage futhi isetshenziswa kabanzi ku-castings enezidingo eziphakeme zokunxephezela i-shrinkage.

Ukukhethwa kwesikhundla kwentamo ye-riser kufanele kusethwe emhlanganweni oshisayo wokuphonsa okushisayo, ukuze uketshezi lwensimbi ku-riser lugeleze ngokukhethekile ku-hot junction, ukufezekisa ukuqina okulandelanayo, futhi ngempumelelo ngempumelelo i-shrinkage. Zama ukugwema ukusetha endaweni yokuhlushwa kwengcindezelo yokuphonsa ukuvimbela ukucindezelwa okubangelwa ukuqina kwentamo yokuqina kwentamo yokuvuselela, okungakhulisa ukuguquguquka nokuthambekela kokuqhekeka kokuphonswa. Inani linqunywe ngokususelwa ngosayizi wokuphonsa, ubunzima besakhiwo, kanye nokusatshalaliswa kwezindawo ezishisayo. Izinkampani ezincane nezilula zingadinga kuphela intamo eyodwa yokuvuselela, kuyilapho izinkambo ezinkulu nezinkulu zingadinga izintamo eziningi zokukhuphuka ukuze kuqinisekiswe ukugcwala okwanele okuhlangene. Ukuxhumeka phakathi kwesikhumulo kanye nokusakaza kufanele kube noshintsho olubushelelezi, ukugwema amakhona afanele noma abukhali ukunciphisa ukumelana nokugeleza kwensimbi encibilikisiwe. Ukuxhumeka phakathi kwentamo ye-riser kanye nokusakaza kufanele kube ukuqina ukuvikela ukuqhekeka ngenxa yomthelela wensimbi encibilikisiwe ngesikhathi senqubo yokuphonsa. Ngasikhathi sinye, ukwakheka nosayizi wokuxhumana kufanele kwenzelwe kahle ukugwema ukwakheka kokushisa ngokweqile kwezindawo ezithintekile ezindaweni zokuphonsa, ezingadala amaphutha ekukhokhisweni.

2. Design Case Ukuhlaziywa kwentamo ye-Iron Riser

Ama-alloys amaningi akhombisa ukuziphatha okungaguquki kanye nokuzindla okubonakalayo ngesikhathi senqubo yokupholisa kusuka ku-liquid kuya ku-Card lokushisa. Kunezigaba ezimbili ezahlukene zokugculiseka. Okokuqala, lapho amazinga okushisa e-alloy ephonsa kupholisa kumugqa we-liquingus, lokhu kuvame ukubizwa ngokuthi yi-shrinkage ye-liquid noma i-shrinkage ebabazekayo. Okwesibili, lapho i-alloy iphola kusuka ku-ketshezi kuqinile, kuvame ukubizwa ngokuthi yi-solification shrinkage. Ngakolunye uhlangothi, ama-graphite cast amaron iron (kufaka phakathi i-iron empunga, insimbi empunga, kanye ne-iron eyingozi) ihambisana nento engajwayelekile ngesikhathi sokupholisa nokuqina, lapho i-metal iqala ukwanda. Lokhu kwandiswa kuvame ukubalwa ukwenela kwezigaba ze-graphity ze-graphity eziphansi, ukunqoba kanye nokudlula kwe-shrinkage ehambisana nokuqina okupholile ne-aucenite. Kuze kube manje, isici esibaluleke kakhulu sokuklama ama-Risers kanye nezinhlelo ze-cast iron isidingo sokugcina ingcindezi efanelekile yonke inqubo yonke. Ekuqaleni, ingcindezi yezulu kufanele ivunyelwe ukwenza uketshezi olukhuphukile, futhi ukuze lokhu kwenzeke, i-riser kumele (icindezelwe). Uma ukwanda kuqala, uhlelo lwe-riser oluklanywe ngokucophelela lulawula ingcindezi yokwanda futhi luqinisekise ukugcwala okuzenzakalelayo kokuphonsa ngesikhathi senqubo esele yokuqina. Lokhu kuqhathanise nensimbi, i-aluminium, yethusi, njll.

3. Ukulawula Ukucindezela

Intambo ye-riser ingaba yingxenye ebaluleke kakhulu ekwakhiweni kohlelo lwe-riser, njengoba imvamisa inquma ubukhulu bengcindezi eyinsalela kuketshezi. Ingaphezulu lokuxhumana nentamo ye-riser kumele libe likhulu ngokwanele ukudlulisa insimbi encibilikisiwe kusuka ekukhuphukeni kuya kokuphonsa isikhathi eside. Uma kunesidingo, ingcindezi eyeqile emgodini woMld kufanele ikhishwe, kepha kufanele ilungele ukugcina ingcindezi emihle yoketshezi ekugcineni kokuqina nokwenza lula ukususwa kokuphakanyiswa kokuphoqelela. Intamo ye-riser ingabhekwa njenge- "volve yezokuphepha" emikhunjini yokucindezela, futhi ukwakhiwa kwayo kufanele kuqinisekise ukuthi ingcindezi ngaphakathi kokuphonswa kwemali igcinwa ezingeni elilawulayo. Izinto zokubumba, noma ngokwengeziwe, isikhunta sesihlabathi esingamelana nengcindezi yokwanda ngaphandle kokuya ngokuya ngokwandisa, kuvame ukunquma izinga lokulawulwa. Uma izinto ezibumbayo zibuthakathaka, njengalapho zisebenzisa isikhunta sesihlabathi sobumba, intamo evundayo kufanele yakhelwe ukudedela ingcindezi yokunwebeka ukuze igweme ukwanda okubumba. Lokhu kutholakala ngokuklama intamo evundayo ukuze kuqiniswe esiteji esibi sekwephuzile, okuvumela ukucindezelwa okuthile kukhishwe ku-riser ngentambo yokuvuka. Ngokusebenzisa izinto ezinamandla ezinamandla nezinzima zemodeli (ezinjengezinhlelo ze-resin), i-RESER Systems), i-RESER FETE yenzelwe ukuba incane, ukuyivumela ukuthi iqinisekise ngaphambili ngesikhathi sesigaba sokunweba kanye nokugcina umfutho osele we-liquid osele. Kodwa-ke, intamo encane kakhulu ye-riser ingaholela ekucindezelweni okusele ngokweqile ngaphakathi kokuphonsa, okuholele ekuthasikeni okuhlobene nokwanda kokubumba. Intamo enkulu ngokweqile i-Riser ihlala iholela ekulahlekelweni kwengcindezi emihle ku-ketshezi ngaphambi kokuqina kuqediwe, okuholela ekunciphiseni kwe-shrinkage kanye nokuphuma kwegesi kusuka kuketshezi lwensimbi oluhlobene nokuqina. Ubungako bentamo yokuvuselela imithetho yokuklama buvame ukususelwa kumodi ye-geometric (MC) yokuphonsa. Inani elijwayelekile le-cast iron elikhiqizwa esihlabathini sobumba liphakathi kuka-0.6 (MC) no-0.9 (MC). Inani elinembile lincike ebulilini bezinto zokwakha isihlabathi, ukwakheka kwamakhemikhali kanye nezinga le-inoculation, kanye nezinga lokupholisa lokupholisa. Uma i-riser iqhutshwa isondela ekusakazweni, umphumela wokushisa esihlabathini phakathi kokuphonsa kanye nentamo ye-riser kuzonciphisa imodulomu yejometri Uma intamo imfushane ngokwanele ukuba ilingane nosayizi noma ngaphansi kosayizi omncane oxhumana nabo, imodetric modulus ingancishiswa ngokuphepha ngezikhathi eziyi-0.6, i.e. imodulus yentamo ende (i-MN (iDemo) = 0.6mn (amafushane)). Lokhu kukhombisa ukuncishiswa okungama-65% endaweni yokuxhumana.

ukugcina

I-shrinkage ephumelelayo ye-graphite cast iron ifaka ukugcina nokulawula ingcindezi enhle yensimbi ewuketshezi kuyo yonke inqubo yokuqina. Ukuqamba kahle uhlelo lokuvuselela kanye nokuthulula, nokulawula isikhathi se-metallurgical nokuthulula kahle, kubalulekile ukukhiqizwa kwezingxenye ze-graphite zensimbi ngaphandle kwe-shrinkage.