Cold processing yepombi dzesimbi (seamless tubes) dzinosanganisira nzira dzakaita sekutonhoresa, kudhirowa kwechando, kudzikisira tension yechando uye kuruka, inova nzira huru dzekugadzira mapombi akatetepa-akasimba uye akasimba. Pakati pavo, kutonhora kutenderedza uye kutonhora kudhirowa kunowanzoshandiswa nzira dzekugadzira dzemhando yepamusoro dzekutonhora kugadziridzwa kwepombi dzesimbi.

Kuenzaniswa nekupisa kukunguruka, kushanda kunotonhora kune zvinotevera zvakanakira:
Inogona kugadzira mapaipi makuru-diameter uye akaonda-akavezwa; high geometric precision; high surface finish; inobatsira pakunatswa kwezviyo, uye neyakafanana yekurapa kupisa system, yakakwira yakazara ma mechanical properties inogona kuwanikwa.

Inogona kuburitsa akasiyana akasarudzika-akaumbwa uye akasiyana-chikamu hunhu uye zvimwe zvinhu zvine nhete yekupisa yekupisa tembiricha renji, yakaderera yakakwirira-yekushisa kuoma uye yakanaka kamuri tembiricha yepurasitiki. Mukana wakatanhamara wekutonhora kukunguruka ndeyekuti ine simba rakasimba rekudzikisa madziro, uye inogona zvakanyanya kunatsiridza mashandiro, dimensional kurongeka uye pamusoro pemhando yezvinhu zvinouya.

Iyo nharaunda yekudzikisa mwero wekudhirowa kutonhora yakaderera pane iyo yekutonhora kutenderedza, asi zvishandiso zviri nyore, mutengo wekushandisa wakaderera, kugadzirwa kunochinjika, uye huwandu hwechigadzirwa chimiro uye zvakatemwa zvakare zvakakura. Naizvozvo, zvinodikanwa kusanganisa kutonhora kutenderedza uye kutonhora nzira dzekudhirowa zvine musoro panzvimbo. Mumakore achangopfuura, kutonhora kwekudzikisira kutonhora, welded pombi kutonhora kugadziridzwa, uye yekupedzisira-refu pombi inotonhora yekudhirowa tekinoroji inogona kuwedzera kubuda kweyuniti. Wedzera huwandu hwemhando uye zvakatemwa, vandudza mhando yewelds, uye ipa yakakodzera pombi zvinhu zvekutonhora kutenderedza uye kutonhora kudhirowa. Uye zvakare, kudziya kugadziridzwa kwakagamuchira kutariswa kwakawanda mumakore achangopfuura, kazhinji induction kupisa kusvika 200 ℃ ~ 400 ℃, kuvandudza mapurasitiki echubhu billet. Iyo yakanyanya kurebesa yekudziya inokunguruka inenge 2 kusvika ku3 nguva yeinotonhora yekukunguruka; Yakawedzera ne30%, zvichiita kuti mamwe masimbi ane yakaderera plasticity uye yakakwirira simba kupedzwa.

Kunyangwe iyo yakatarwa siyana, dimensional kurongeka, hunhu hwepamusoro uye microstructure yemachubhu anotonhora-akashanda ari pamusoro peaya emachubhu anopisa akakungurutswa, pane matambudziko mana mukugadzirwa kwayo: nguva dzekutenderera, kutenderera kwenguva refu, kushandiswa kwesimbi kukuru uye kurapwa kwakaoma kwepakati. process.

Nekuda kwezvinhu zvakasiyana-siyana, mamiriro ehunyanzvi uye zvirevo zvepombi dzakasiyana siyana dzesimbi, maitiro ekugadzira uye
Iyo process system yakasiyanawo, asi kazhinji ine matatu anotevera maitiro makuru:

1) Pre-kurapwa kwekushanda kunotonhora, kusanganisira kugadzirira muzvikamu zvitatu: saizi, chimiro, chimiro uye chimiro chepamusoro;
2) Kutonhora kushanda, kusanganisira kudhirowa kunotonhora, kutenderedza kutonhora uye kutenderera;
3) Kupedzwa kwezvigadzirwa zvakapedzwa, zvinosanganisira kurapwa kwekupisa, kucheka, kutwasanudza uye kuongorora zvigadzirwa zvakapedzwa.