Cold drawn pipe quality defects uye kudzivirira

Seamless simbi pombi inotonhora yekugadzirisa nzira:

①inotonhora kukunguruka ②inotonhora kudhirowa ③kutenderera

a. Cold rolling uye kutonhora kudhirowa kunonyanya kushandiswa kune: kunyatsoita, kutetepa-madziro, diki dhayamita, abnormal cross-section uye yakakwirira-simba pombi.

b. Kuruka kunonyanya kushandiswa: kugadzira dhayamita hombe, madziro akatetepa kana dhayamita rakakura, pombi dzesimbi dzakatetepa, uye ine tsika yekutsiviwa nemapombi akaiswa (simbi, welding, kupisa kupisa, nezvimwewo)

Iyo huru nzira yekuyerera yekugadzira isina musono simbi pombi nekutonhora kudhirowa:

Pombi isina kugadzirira → Kudhirowa kunotonhora kwepombi yesimbi → Kupedza uye kugadzirisa pombi yesimbi yapera → Kuongorora

Hunhu hwemapombi esimbi asina musono anogadzirwa neinotonhora kudhirowa (kuenzaniswa nekupisa kutenderedza)

① Iyo yekunze dhayamita yepombi yesimbi inova diki kusvika capillary machubhu agadzirwa

②Simbi pombi madziro itete

③Simbi pombi ine yakakwira dimensional kurongeka uye nani pamusoro pemhando

④Iyo muchinjiko-chikamu chimiro chepombi yesimbi yakanyanya kuomarara, uye inochinja-chinja-chikamu uye yakakosha-yakaita simbi mapaipi anogona kugadzirwa.

⑤ Simbi pombi kuita kwepamusoro

⑥Mutengo wekugadzira wakakwira, chishandiso chakakura uye mold kudyiwa, goho rakaderera, kuburitsa kudiki, uye yakakwirira kuchengetedza kwezvakatipoteredza zvinodiwa.

Cold drawn tube quality defects uye kudzivirira kwavo

⒈ Hunhu hurema hwepombi dzesimbi dzinodhonzwa nechando dzinonyanya kusanganisira: kukora kwemadziro asina kuenzana epombi dzesimbi, kunze-ku-kushivirira dhayamita rekunze, kutsemuka kwepamusoro, mitsetse yakatwasuka uye zvikweshwa, nezvimwe.

①Ukobvu hwemadziro husina kuenzana hwepombi dzesimbi dzinotonhora zvine hukama nehupamhi hwemadziro echubhu isina chinhu, nzira yekudhirowa, yekudhirowa centreline offset, gomba chimiro, deformation process paramita uye mamiriro ekuzora.

a. Kuvandudza kukora kwemadziro kurongeka kwechubhu isina chinhu chinhu chakakosha chinodiwa pakuvandudza kukora kwemadziro kurongeka kwepombi yesimbi inotonhorera.

b. Chinangwa chikuru che extubation pasina mandrel ndechekuderedza dhayamita uye deformation

c. Iyo gomba chimiro chinhu chakakosha chinokanganisa kukora kwemadziro asina kuenzana epombi dzesimbi dzinotonhorera.

d. Iyo zvakare inzira inoshanda yekuona kunhonga mhando yechubhu isina chinhu, bvisa iyo iron oxide sikeri pamusoro payo, uye kuvandudza kunaka kwekuzora.

②Panguva yekugadzira, kutarisisa kukuru kunofanirwa kubhadharwa kune kupera uye kubvaruka kwekukodzera uye kunyora

③Kuti uderedze kutsemuka pamusoro pepombi yesimbi mushure mekudhonza, mabheji epombi anokwanirisa anofanirwa kusarudzwa, uye kuremara kwepombi kunofanira kuvhurika. Paunenge uchinhonga pombi dzisina kuvharwa, zvinodikanwa kudzivirira kunhonga zvakanyanya kudzivirira gomba kana hydrogen embrittlement, uye kudzivirira pasi-kunhonga uye kusakwana kucheneswa kweiyo oxide sikeri, chengetedza kunaka kwechubhu isina chinhu panguva yekushandiswa, tora zvine musoro. chubhu yekudhirowa nzira, sarudza yakakodzera deformation process paramita uye chishandiso chimiro, uye simbisa kugadzirisa uye kuongororwa kweiyo yekudhirowa yepakati mutsara.

④Kunatsiridza kunaka kwekunhonga uye kunaka kwekuzora kwepombi isina chinhu, kuve nechokwadi chekuoma kwechishandiso, kufanana uye kupera kwepamusoro kuchabatsira kudzikisa kuitika kwemitsara yakatwasuka uye makwara papombi yesimbi.