Thaum ntsib ib qho kev txiav txim uas yuav tsum tau tsim tawm, feem ntau nws yuav tsum tau tos lub sijhawm tsim khoom, uas sib txawv ntawm 3-5 hnub mus rau 30-45 hnub, thiab hnub xa khoom yuav tsum tau lees paub nrog tus neeg siv khoom kom ob tog tuaj yeem pom zoo.

Cov txheej txheem tsim cov kav hlau tsis muaj seamless feem ntau suav nrog cov kauj ruam tseem ceeb hauv qab no:

1. Kev npaj Billet
Cov khoom siv raw ntawm cov yeeb nkab hlau tsis muaj seamless yog cov hlau puag ncig lossis cov hlau ingots, feem ntau yog cov hlau carbon zoo lossis cov hlau tsis tshua muaj alloy. Lub billet raug ntxuav, nws qhov chaw raug kuaj xyuas seb puas muaj qhov tsis zoo, thiab txiav mus rau qhov ntev uas xav tau.

2. Kev Ua Kub
Cov billet raug xa mus rau lub cub tawg kom sov, feem ntau ntawm qhov kub ntawm li 1200 ℃. Yuav tsum tau ua kom sov sib npaug thaum lub sijhawm ua kom sov kom cov txheej txheem perforation tom qab ntawd tuaj yeem ua mus zoo.

3. Kev tho qhov
Lub billet kub yog perforated los ntawm lub perforator los ua ib lub raj hollow rough. Txoj kev perforation feem ntau siv yog "oblique rolling perforation", uas siv ob lub rotating oblique rollers los thawb lub billet mus tom ntej thaum tig nws, yog li ntawd qhov chaw nruab nrab yog hollow.

4. Dov (ncab)
Cov yeeb nkab uas muaj qhov perforated raug ncab thiab ntsuas los ntawm ntau yam khoom siv dov. Feem ntau muaj ob txoj kev:

Txoj kev dov tas mus li: Siv lub tshuab dov ntau zaus rau kev dov tas mus li kom maj mam nthuav cov yeeb nkab ntxhib thiab txo cov phab ntsa tuab.

Txoj kev rub cov yeeb nkab: Siv lub mandrel los pab ncab thiab dov kom tswj tau qhov txoj kab uas hla sab hauv thiab sab nraud ntawm cov yeeb nkab hlau.

5. Loj thiab txo qis
Yuav kom ua tiav qhov loj me raws li qhov xav tau, cov yeeb nkab yuav raug ua tiav hauv lub tshuab ntsuas qhov loj me lossis lub tshuab txo qhov loj me. Los ntawm kev dov thiab ncab tas mus li, qhov dav sab nraud thiab phab ntsa ntawm cov yeeb nkab yuav raug kho.

6. Kev kho cua sov
Yuav kom txhim kho cov khoom siv kho tshuab ntawm cov yeeb nkab hlau thiab tshem tawm kev ntxhov siab sab hauv, cov txheej txheem tsim khoom feem ntau suav nrog cov txheej txheem kho cua sov xws li normalizing, tempering, quenching lossis annealing. Cov kauj ruam no tuaj yeem txhim kho qhov tawv thiab ruaj khov ntawm cov yeeb nkab hlau.

7. Ncaj thiab txiav
Cov yeeb nkab hlau tom qab kho cua sov yuav raug khoov thiab yuav tsum tau ncaj los ntawm lub tshuab ncaj. Tom qab ncaj, cov yeeb nkab hlau raug txiav kom ntev raws li tus neeg siv khoom xav tau.

8. Kev Tshuaj Xyuas
Cov kav hlau tsis muaj qhov tsis sib xws yuav tsum tau kuaj xyuas zoo, uas feem ntau suav nrog cov hauv qab no:

Kev Tshuaj Xyuas Qhov Muag: Xyuas seb puas muaj qhov tawg, qhov tsis zoo, thiab lwm yam ntawm qhov chaw ntawm cov yeeb nkab hlau.
Kev tshuaj xyuas qhov ntev: Ntsuas seb lub cheeb, phab ntsa tuab thiab ntev ntawm cov yeeb nkab hlau puas ua tau raws li qhov yuav tsum tau ua.
Kev tshuaj xyuas cov khoom siv lub cev: xws li kev sim tensile, kev sim cuam tshuam, kev sim hardness, thiab lwm yam.
Kev kuaj tsis ua puas tsuaj: Siv ultrasound lossis X-ray los ntes seb puas muaj qhov tawg lossis qhov hws sab hauv.
9. Ntim thiab xa khoom
Tom qab dhau qhov kev tshuaj xyuas, cov yeeb nkab hlau raug kho nrog kev tiv thaiv xeb thiab tiv thaiv xeb raws li qhov xav tau, thiab ntim thiab xa khoom.

Los ntawm cov kauj ruam saum toj no, cov kav hlau tsis muaj seamless uas tsim tawm tau siv dav hauv roj, roj av, tshuaj lom neeg, boiler, tsheb, aerospace thiab lwm yam teb, thiab tau lees paub dav rau lawv lub zog siab, tiv taus corrosion thiab cov khoom siv kho tshuab zoo.