Vermicular cast iron of valve material

Vermicular cast iron of valve material

Sikelo iyi imatanthauzira mawu ndi matanthauzo, magiredi, zofunikira zaukadaulo, sampuli ndi midadada yoyesera, njira zoyesera, malamulo osamalira, chizindikiritso choponyera, kuyika, zosungirako ndi zoyendera. Kupanga njira ndi mankhwala zikuchokera vermicular kuponyedwa chitsulo ayenera kutsimikiziridwa ndi katundu kuonetsetsa kuti chofunika zinthu kalasi ndi ntchito zikugwirizana sikelo. Pamene chitsulo cha vermicular cast chili ndi ntchito zapadera ndi zofunikira, mankhwala opangidwa ndi mankhwala ndi kutentha angagwirizane ndi onse awiri. Vermicular kuponyedwa chitsulo ayenera kuonedwa kuti osachepera 80% vermicular graphite pa awiri azithunzithunzi opukutidwa ndege yake, ndi otsala 20% ayenera ozungulira graphite, clumped graphite, ndi flake graphite sayenera kuloledwa.

osiyanasiyana

Sikelo iyi imatanthauzira mawu ndi matanthauzo, magiredi, zofunikira zaukadaulo, sampuli ndi midadada yoyesera, njira zoyesera, malamulo osamalira, chizindikiritso choponyera, kuyika, zosungirako ndi zoyendera.

Izi sikelo ndi oyenera ntchito nkhungu forging wa vermicular graphite kuponyedwa chitsulo ndi mchenga nkhungu kapena madutsidwe matenthedwe madutsidwe commensurate ndi nkhungu mchenga. Chitsulo chopangidwa ndi coil cast chopangidwa ndi njira zina zopangira chimatha kugwiritsidwa ntchito ngati chizindikiritso.

Chikalata chodziwika bwino

Zolemba zotsatirazi ndizofunikira pakugwiritsa ntchito chikalatachi. Kwa maumboni amasiku, mtundu wa deti umagwira ntchito pachikalatachi. Mtundu wa chikalata chomwe sichinatchulidwe (kuphatikiza zonse zosinthidwa) chidzagwiritsidwa ntchito palembali.

Zida zachitsulo za GB/T 228 - njira yoyesera yolimba kutentha firiji (GB/T 228-2002,eqv ISO 6892:1998)

Zida zachitsulo - Mayeso a kuuma kwa Brinell - Gawo 1: Njira zoyesera (GB/T 231.1-2009, ISO 6506-1:2005, MOD)

GB/T 5611 Kupanga mawu

GB/T 5612 njira yoyimira chitsulo chachitsulo (GB/T 5612-2008, ISO 15931; 2004, MOD)

Zitsanzo zopangira malo (GB/T 6060.1-1997,eqv ISO 2632-3:1979)

Kulekerera kwapang'onopang'ono ndi Malipiro a Machining a Castings (GB/T 6414-1999,eqv ISO 8062:1994)

GB/T 11351 kuponyera kulolerana kulemera

GB/T 26656 vermicular cast iron metallography kukonza

Terms ndi matanthauzo

Mawu omwe adakhazikitsidwa mu GB/T 5611 ndipo mawu ndi matanthauzidwe otsatirawa amagwiritsidwa ntchito palembali.

Vermicular cast iron

Mpweya umakhala makamaka mu mawonekedwe a vermicular graphite wopangidwa kuchokera ku chitsulo chosungunula muzitsulo zachitsulo.

Chithandizo cha zokwawa

Njira yomwe chitsulo chokwawa chimawonjezeredwa kuchitsulo chamadzimadzi kuti chiwombeze graphite ngati nyongolotsi panthawi yolimba.

Kutaya khoma lalikulu makulidwe

Kukula kwakukulu kwa khoma la kuponyera kumatanthawuza makulidwe a gawo la ntchito yamakina ya zida zoponyera kapena makulidwe a gawo lalikulu logwira ntchito la kuponyera, lomwe limavomerezedwa ndi onse awiri.

mtundu

Gawo lazinthu lidzayimiridwa molingana ndi zomwe GB/T 5612.

Pamlingo uwu, chitsulo cha graphite cha vermicular chimagawidwa m'makalasi a 5 molingana ndi kagawidwe ka makina a zitsanzo zomwe zimakonzedwa ndi kuponyedwa kamodzi kapena ndi midadada yoyesera (onani Table 1 ndi Table 2).

Kulamula zambiri

Mtundu wazinthu zoponyera zomwe Demander amafunikira.

Waukulu khoma makulidwe a kuponya ntchito monga anavomereza ndi mbali zonse.

Zofunikira zina zapadera zomwe zimagwirizana ndi onse awiri.

Kupanga ndi kupanga

Kupanga njira ndi mankhwala zikuchokera vermicular kuponyedwa chitsulo ayenera kutsimikiziridwa ndi katundu kuonetsetsa kuti chofunika zinthu kalasi ndi ntchito zikugwirizana sikelo. Pamene chitsulo cha vermicular cast chili ndi ntchito zapadera ndi zofunikira, mankhwala opangidwa ndi mankhwala ndi kutentha angagwirizane ndi onse awiri.

Zofunikira paukadaulo

Makina amtundu wamtundu umodzi

Zochita zamakina zamitundu imodzi yachitsulo chonyezimira ziyenera kugwirizana ndi zomwe zili mu Gulu 1.

Nthawi zambiri, 0,2% zokolola mphamvu Rpo si ntchito ngati maziko kuvomereza. Pamene wofunayo ali ndi zofunikira zapadera, zikhoza kutsimikiziridwa.

Table 1 Mechanical function of single cast sample

Ntchito yamakina a chitsanzo cha cast

Mawonekedwe a chitsulo cha vermicular cast iron akuyenera kugwirizana ndi zomwe zili mu Table 2.

0.2% zokolola mphamvu Rpo zambiri si ntchito ngati maziko kuvomereza. Pamene wofunayo ali ndi zofunikira zapadera, zikhoza kutsimikiziridwa.

Table 2 Mechanical function of the cast sample

Zimango ntchito yoponya zitsanzo za thupi

Udindo wa vermicular kuponyedwa chitsulo ndi midadada mayeso pa kuponyera ayenera kuganizira mawonekedwe a kuponyera ndi dongosolo mawonekedwe a dongosolo kuthira, kuti kupewa zotsatira zoipa pa ntchito za mbali moyandikana, ndi mfundo si kuti. zimakhudza magwiridwe antchito a kuponyera, mawonekedwe a mawonekedwe a kuponyera komanso kuchuluka kwa midadada yoyeserera. Choyimira choyesa chidzatengedwa kuchokera ku gawo la kugonana la kuponyedwa. Kuti mudziwe kukula kwa chitsanzocho, wogula adzawonetsa kwa wogulitsa gawo lofunikira la kuponyera. Ngati wofunsayo alibe malingaliro atsankho, wogulitsa akhoza kuyika malo odulirapo ndikuzindikira kukula kwa chitsanzocho.

Kuyika: chitsulo chosungunuka cha vermicular for Valve materials (I)

Ndi cast test block

Ma castings omwe chipika choyezeracho chimalumikizidwa nawonso ndi ma castings onse a batch omwewo okhala ndi makulidwe ofanana a khoma.

Nthawi zambiri, pamene kulemera kwa kuponyera ndi oposa 2000kg, ndi makulidwe khoma ndi 30mm ~ 200mm, ndi amakonda angagwirizanitse kuponya mayeso chipika. Pamene kulemera kwa kuponyera kuli koposa 2000kg ndipo makulidwe a khoma ndi 200mm, chipika chogwiritsira ntchito chimagwiritsidwa ntchito. Kukula ndi malo a chipika choyeserera chidzavomerezedwa ndi onse awiri.

Pokhapokha ngati zafotokozedwa mwanjira ina ndi onse awiri, mawonekedwe ndi kukula kwa chipika choyesedwa cholumikizidwa chikuwonetsedwa pachithunzichi

Udindo wa chipika chowonjezera choponyera mayeso pa kuponyera kuyenera kuganizira mawonekedwe a kuponyera ndi mawonekedwe a dongosolo lothira, kuti tipewe zotsatira zoyipa pazantchito za mbali zoyandikana, ndipo sizikhudza magwiridwe antchito. za kuponyera, maonekedwe a kuponya ndi kachulukidwe chipika mayeso monga mfundo.

Mipiringidzo yonse yoyeserera iyenera kulembedwa momveka bwino kuwonetsetsa kuti mawonekedwe oponya atha kutsatiridwa munthawi yonseyi.

Pamene ma castings amafuna chithandizo cha kutentha, ma castings ophatikizidwa adzalekanitsidwa ndi ma castings pambuyo pa chithandizo cha kutentha pokhapokha atagwirizana ndi maphwando. kutambasula

Kufotokozera:

Kuchuluka kwa mchenga wa kuponya kwa chipika choyesera: mtundu Ⅰ, Ⅱa ndi Ⅱb ndi 40 mm wocheperapo; Lembani Ⅲ yaying'ono 80mm

Zindikirani: Pakhoma lopyapyala kapena zitsulo, zitsanzo zitha kutengedwa kuchokera ku chipika choyesera cha u12.5mm, ndipo ntchito yamakina imatha kuvomerezedwa ndi onse awiri.

Makulidwe a ma block a I ndi U ndi ma millimeters

Kufotokozera:

Mayeso chipika kuponyedwa thireyi kudya: mtundu I, mtundu II yaing'ono 40mm; Mtundu Ⅲ Wamng'ono 80mm,

Zindikirani: Pamipanda yopyapyala kapena yachitsulo, zitsanzo zitha kutengedwa kuchokera ku u

Body test block

Ntchito yamakina ya gawo lomwe latchulidwa la kuponyera lidzavomerezedwa ndi onse awiri. Ntchito izi zidzayesedwa kuchokera ku chitsanzo chodulidwa kuchokera ku gawo linalake la kuponyedwa. Zitsanzo za diameter ziyenera kuvomerezedwa ndi onse awiri. Kukula kwachitsanzo chokhazikika kukuwonetsedwa mu FIG. 4 ndi Table 6

Choyimira choyesa chidzatengedwa kuchokera ku gawo la kugonana la kuponyedwa. Kuti mudziwe kukula kwa chitsanzocho, wogula adzawonetsa kwa wogulitsa gawo lofunikira la kuponyera. Ngati wofunsayo alibe malingaliro atsankho, wogulitsa akhoza kuyika malo odulirapo ndikuzindikira kukula kwa chitsanzocho.