Hunhu, Mabhenefiti uye Mashandisirwo eDuctile Iron

Ductile iron, inozivikanwawo se spheroidal kana nodular iron, iboka resimbi dzine marongerwo akasiyana adzo anodzipa simba rakawanda, kuchinjika, kugara kwenguva refu, uye kutwasuka. Ine kabhoni inodarika 3 muzana uye inogona kukotama, kumonyoroka, kana kukanganisika isina kutyoka, nekuda kwechimiro chayo chegrafiti flake. Ductile iron yakafanana nesimbi muhunhu hwayo hwemakanika uye yakasimba kupfuura simbi yakajairwa.

Kuumbwa kwesimbi dzakapfava kunoitwa nekudurura simbi dzakapfava dzakanyungudutswa muzviumbwa, uko simbi inotonhorera uye inosimba kuti igadzire maumbirwo anodiwa. Maitiro aya ekuumbwa kwesimbi anoguma nezvinhu zvesimbi zvakasimba zvinogara kwenguva refu.

Chii Chinoita Kuti Ductile Iron Ive Yakasiyana?

Ductile iron yakagadzirwa muna 1943 senzira yekuvandudza simbi yemazuva ano kupfuura simbi yemazuva ano. Kusiyana nesimbi yakakandwa, uko graphite inoonekwa semaflakes, ductile iron ine graphite muchimiro chespheroids, saka izwi rekuti "spheroidal graphite." Chimiro ichi chinobvumira ductile iron kuti itsungirire kukotama nekuvhunduka pasina kutsemuka, zvichipa simba rakasimba kupfuura simbi yemazuva ano, iyo inowanzo tyoka nekutyoka.

Ductile iron inogadzirwa zvakanyanya nesimbi yenguruve, simbi yakachena kwazvo ine iron inodarika 90%. Iron yenguruve inofarirwa nekuti ine zvinhu zvishoma zvinosara kana zvinokuvadza, ine makemikari akafanana, uye inokurudzira mamiriro ekunze akanaka panguva yekugadzira. Izvi ndizvo zvikonzero zvikuru nei maindasitiri ekugadzira simbi anofarira iron yenguruve pane zvimwe zvinhu zvakaita sesimbi yakapwanyika.

Zvimiro zveDuctile Iron

Mhando dzakasiyana dzesimbi inonyungudika dzinogadzirwa nekushandura chimiro che matrix chakatenderedza graphite panguva yekukanda kana kuburikidza nekuwedzera kupisa. Mhando diki idzi dzakagadzirirwa kuwana ma microstructures chaiwo, ayo anozosarudza hunhu hwemhando yega yega yesimbi inonyungudika.

Ductile iron inogona kufungidzirwa sesimbi ine graphite spheroids. Hunhu hwesimbi yakakomberedza graphite spheroids hunokanganisa zvakanyanya hunhu hwe ductile iron, nepo graphite pachayo ichibatsira kuti irambe ichichinjika uye ichichinjika.

Kune mhando dzakasiyana dzema matrices mu ductile iron, uye dzinotevera ndidzo dzinonyanya kuzivikanwa:

1. 1. Ferrite– Iron matrix yakachena inopfava uye inochinjika, asi isina simba rakawanda. Ferrite haipfuuri nekusakara zvakanaka, asi inoramba kusimba zvakanyanya uye nyore kugadzira zvinoita kuti ive chinhu chakakosha mumhando dzesimbi dzinopfava.
2. 2. Pearlite– Musanganiswa weferrite nesimbi carbide (Fe3C). Yakaoma zvishoma uye ine ductility iri pakati nepakati, ine simba rakawanda, inodzivirira kupera zvakanaka, uye inodzivirira kukuvadzwa zvine mwero. Pearlite inopawo michina yakanaka.
3. 3. Pearlite/Ferrite- Chimiro chakasanganiswa chine pearlite neferrite, inova ndiyo matrix inonyanya kuwanikwa mumhando dzekutengeserana dzesimbi ine ductile. Inosanganisa hunhu hwese, ichipa nzira yakaringana yekusimba, ductility, uye machinability.

Magadzirirwo akasiyana esimbi imwe neimwe anochinja hunhu hwayo hwemuviri:

Magiredhi Esimbi Akajairika

Kunyange zvazvo paine zvinhu zvakasiyana-siyana zvesimbi dzakapfava, mafekitori anopa mhando nhatu dzakajairika:

Mabhenefiti eDuctile Iron

Ductile iron inopa mabhenefiti akawanda kune vagadziri nevagadziri:

• • Inogona kuumbwa nekugadziriswa zviri nyore, zvichideredza mari yekugadzira.
• • Ine simba rakawanda pakati pehuremu, zvichibvumira zvikamu zvakasimba asi zvakareruka.
• • Ductile iron inopa kusimba kwakanaka, kushanda zvakanaka pamutengo, uye kuvimbika.
• • Kukwanisa kwayo kukanda uye kugona kwayo kugadzira zvinhu zvinoita kuti ikwanise kushandiswa muzvikamu zvakaoma.

Mashandisirwo eDuctile Iron

Nekuda kwekusimba kwayo uye kugona kwayo kupinza zvinhu, simbi inopinza zvinhu ine mabasa akasiyana-siyana mumaindasitiri. Inowanzoshandiswa mumapaipi, zvikamu zvemotokari, magiya, mapombi, uye mabhesi emuchina. Kusagona kwesimbi inopinza zvinhu kunokanganisa mapfupa kunoita kuti ive yakakodzera kushandiswa kwekuchengetedza, senge mabhollards uye kudzivirira kukuvadzwa. Inoshandiswawo zvakanyanya muindasitiri yemagetsi emhepo nedzimwe nzvimbo dzine kushushikana kwakanyanya uko kugara kwenguva refu uye kuchinjika kwakakosha.