Nhasi, ndichakuendesai kuDonghuan Malleable Iron Casting Co., Ltd. Ngatidzidzei nezvekukandira jecha rakavharwa.
I.Kuziva uye kunzwisisa kwejecha rakavharwa
1. Zvimiro zvejecha rakaputirwa
Iine kushanda kwesimba kwakakodzera;yakanaka fluidity, iyo yakagadzirwa jecha molds uye jecha cores zvine akajeka contours uye dense zvimiro, izvo zvinogona kugadzira yakaoma jecha cores;jecha molds (cores) vane kunaka kwepamusoro, uye kushata kwepamusoro kunogona kusvika kuRa = 6.3～12.5μm, Kurongeka kwedimensional kunogona kusvika CT7～CT9 level;iyo collapsibility yakanaka, uye kukanda kuri nyore kuchenesa.
2. Chikamu chekushandiswa
Jecha rakavharidzirwa rinogona kushandiswa kugadzira mold uye jecha cores.Iyo molds kana cores yejecha rakaputirwa inogona kushandiswa pamwe chete kana nemamwe majecha ejecha (cores);haigoni kungoshandiswa kukanda simbi yesimbi kana kukanda pasi-pasi, asiwo Inogona kushandiswa kwejecha-yakavharwa nesimbi yekukanda uye kupisa kwepakati pecentrifugal;inogona kushandiswa kwete chete pakugadzirwa kwesimbi yakakandwa uye isina-ferrous alloy castings, asiwo pakugadzirwa kwesimbi castings.
II.Kugadzirira kwejecha rakaputirwa
1. Kuumbwa kwejecha rakaputirwa
Iyo inowanzo umbwa nezvinhu zvinoramba, mabhainda, kurapa maajenti, mafuta ekuzora uye akakosha ekuwedzera.
2. Kugadzirwa kwejecha rakaputirwa
Kugadzirira kwejecha rakavharwa kunonyanya kubatanidza kutonhora, kudziya kwekupfeka, uye kupisa kwemafuta.Parizvino, zvinenge zvese kugadzirwa kwejecha rakaputirwa kunotora nzira yekupisa inopisa.
3. Main chigadzirwa marudzi ejecha rakaputirwa
(1) Jecha rinowanzovharwa ijecha rechinyakare rakavharwa
(2) High-simba uye yakaderera-gassing mhando yakavharwa jecha
Zvimiro: simba rakakwirira, kuwedzera kwakaderera, gasi rakaderera, gasi rinononoka, anti-oxidation
(3) High tembiricha inodzivirira (mhando) yakavharwa jecha (ND mhando)
Zvimiro: yakakwirira tembiricha kuramba, yakakwirira simba, yakaderera kuwedzera, yakaderera gasi, inononoka gasi, nyore kudonha, anti-oxidation
(4) Jecha rakavharidzirwa rinoputsika zviri nyore
Iine simba rakanaka uye yakanakisa kuderera-kupisa kudonha kwekuita, yakakodzera kugadzirwa kweasina-ferrous metal castings.
(5) Zvimwe zvinodiwa zvakakosha zvakaputirwa jecha.
III.Nzira huru yekugadzira core nejecha rakavharwa
Tembiricha yekudziya ndeye 200-300 ℃, nguva yekurapa ndeye 30-150s, uye jecha rekupfura rinomanikidza 0.15-0.60MPa.Kune jecha cores ane maumbirwo akareruka uye jecha rakaputirwa rine mvura yakanaka, kuderera kwekupfura kunogona kusarudzwa.Kune dzakatetepa jecha cores, yakaderera kupisa tembiricha inogona kusarudzwa.Kana tembiricha yekudziya yakadzikira, nguva yekurapa inogona kuwedzerwa zvakakodzera.Resin inoshandiswa mujecha rakaputirwa inonzi phenolic resin.Zvakanakira zvepakati-kuita maitiro: yakakodzera simba rekuita;mvura yakanaka;yakanaka yepamusoro yepamusoro yejecha core (Ra = 6.3-12.5μm);kusimba kwakasimba kwehunyoro hwejecha core;kudonha kwakanaka uye nyore kuchenesa kwekukanda.
1. Mold (mold) tembiricha
Iyo tembiricha yekuumbwa ndechimwe chezvinhu zvikuru zvinokanganisa ukobvu uye kusimba kweganda reganda, rinowanzodzorwa pa220～260℃
2. Jecha kupfura kumanikidza uye nguva
Nguva yekupfura jecha inowanzodzorwa pa3～10s.Kana nguva yacho ipfupi, mold yejecha (core) haigone kuumbwa.Iyo jecha kupfura kumanikidza kazhinji inenge 0.6MPa;kana kudzvinyirirwa kwakanyanyisa, zviri nyore kukonzera kusakwana kupfura kana kusununguka.Nguva yekuomesera: Hurefu hwekuomesa nguva kunonyanya kuenderana nekukora kwejecha mold (musimboti) uye tembiricha yeforoma, kazhinji inotenderedza 60-120s.
Parizvino, zvigadzirwa zvedu zvikuru zvinogoneka simbi pombi fittings, chubhu zvisungo, furemu zvinobatanidza, mhepo hose couplings, kaviri bhaudhi zvisungo, imwe bhaudhi hose zvisungiso, camlock couplings, kukurumidza couplings, conduit muviri, KC minyatso, hose menders uye anopfuura mazana zvigadzirwa kuti iwe usarudze.Tikugashirei kuDonghuan Malleable Iron casting yekubvunza, isu tichave nemoyo wese kubasa rako.
Nguva yekutumira: Zvita-22-2021