Mitundu yosiyanasiyana yamatumba a mafutaamagwiritsidwa ntchito pogwiritsira ntchito mafuta: zosungiramo mafuta pamwamba zimateteza chitsime ku madzi osaya ndi kuipitsidwa kwa mpweya, kuthandizira zipangizo zamakono ndikusunga kulemera kwa zigawo zina za casings.Makina opangira mafuta aukadaulo amalekanitsa kukakamizidwa kwa zigawo zosiyanasiyana kuti madzi obowola aziyenda bwino ndikuteteza casing yopanga.Kuti muyike chipangizo choletsa kuphulika, chipangizo chotsimikizira kutayikira ndi liner pobowola.Amagwiritsidwa ntchito poteteza kubowola komanso kusiyanitsa matope oboola.Popanga posungira mafuta, m'mimba mwake nthawi zambiri amakhala 114.3 mm mpaka 508 mm.

Kuwongolera kutentha kosiyanasiyana kumasankhidwa posungira mafuta m'gawo losiyanasiyana la kutentha, ndipo kutentha kuyenera kuchitika molingana ndi kutentha kwina.AC1 ya 27MnCrV chitsulo ndi 736 ℃, AC3 ndi 810 ℃, kutentha kwa kutentha ndi 630 ℃ mutatha kuzimitsa, ndipo nthawi yotentha yotentha ndi 50min.Kutentha kwa kutentha kumasankhidwa pakati pa 740 ℃ ndi 810 ℃ panthawi ya kutentha kwapakati.Kutentha kwapang'onopang'ono kuzimitsa kutentha ndi 780 ℃ ndipo nthawi yogwira ndi 15min;chifukwa kutentha kwapang'ono kumatenthedwa m'chigawo cha α + γ cha magawo awiri, kulimbako kumatha kupitsidwanso ndikusunga kutentha.Kupaka mafuta m'miyendo ndi njira yamoyo yogwiritsira ntchito chitsime cha mafuta.Chifukwa cha mikhalidwe yosiyanasiyana ya geological, kupsinjika kwa pansi kumakhala kovutirapo, ndipo kukanikizana, kuponderezana, kupindika ndi kupsinjika kwa torsion kumagwira ntchito pathupi la chitoliro mokwanira, zomwe zimayika patsogolo zofunikira zamtundu wa casing yokha.Boko lokhalo likawonongeka pazifukwa zina, kupanga chitsime chonse kumatha kuchepetsedwa kapena kuchotsedwa.Malinga ndi mphamvu ya chitsulo, casing akhoza kugawidwa m'makalasi osiyanasiyana, mwachitsanzo J55, K55, N80, L80, C90, T95, P110, q125, V150, etc. Zosiyana bwino bwino ndi kuya bwino kumabweretsa magulu osiyanasiyana zitsulo.M'malo owononga, choyikapo chokhacho chimafunika kuti chisawonongeke ndi dzimbiri.M'malo omwe ali ndi zovuta zachilengedwe, ma casing amafunikiranso kuti asagwe komanso kukana kukokoloka kwa tizilombo tating'onoting'ono.Chitoliro chapadera chamafuta chimagwiritsidwa ntchito makamaka pobowola zitsime zamafuta ndi gasi ndikunyamula mafuta ndi gasi.Zimaphatikizapo chitoliro chobowola mafuta, chotengera chamafuta ndi chitoliro chopopera mafuta.

Mafuta kubowola chitoliro makamaka ntchito kulumikiza kubowola kolala ndi pang'ono ndi kusamutsa pobowola mphamvu.Chosungira mafuta chimagwiritsidwa ntchito kwambiri pothandizira pobowola komanso mukamaliza, kuti atsimikizire kuti chitsime chonsecho chimagwira ntchito bwino pambuyo pobowola ndikumaliza.Mafuta ndi gasi pansi pa chitsime chamafuta amatumizidwa kumtunda popopa machubu.Pakati pa kutalika kwa LC ndi kutha kwa ulusi, zimaloledwa kuti chilemacho chisapitirire pansi pa chulu cha ulusi wapansi pansi kapena sichiposa 12.5% ​​ya makulidwe a khoma (chilichonse chachikulu), koma palibe mankhwala owononga. amaloledwa pamwamba pa ulusi.Chamfer akunja a chitoliro mapeto (65 °) adzakhala wathunthu pa 360 ° circumference wa mapeto chitoliro.Kuzungulira kwa chamfer kumapangitsa kuti muzu wa ulusi uzimiririka pamwamba pa chitoliro m'malo mwa kumapeto kwa chitoliro, ndipo sipadzakhalanso m'mphepete.

The chamfering kunja kwa chitoliro mapeto ndi 65 ° mpaka 70 ° ndi chamfering wamkati wa chitoliro mapeto ndi 360 ° ndi chamfering wamkati ndi 40 ° mpaka 50 ° motero.Ngati pali gawo lomwe silinatembenuzidwe, chamfering iyenera kusungidwa pamanja.Chotsekeracho chimayikidwa mu boreboe ndikuchiyika ndi simenti kuti chitsimecho chisalekanitse mafunde ndi kugwa, ndikuwonetsetsa kuzungulira kwa matope obowola, kuti athandize kubowola ndi kugwiritsa ntchito.Zitsulo zosungiramo zosungiramo mafuta: H40, J55, K55, N80, L80, C90, T95, P110, q125, V150, etc. Fomu yopangira mapeto a Casing: ulusi waufupi wozungulira, ulusi wautali wozungulira, ulusi wa trapezoidal, ulusi wapadera, ndi zina zotero. amagwiritsidwa ntchito makamaka pothandizira chitsime pobowola komanso akamaliza, kuti atsimikizire kuti chitsime chonsecho chimagwira ntchito bwino pambuyo pobowola ndikumaliza.