Kev siv cov raj seamless hauv kev tsim khoom thiab lub neej tau txais kev dav thiab dav. Txoj kev loj hlob ntawm seamless raj nyob rau hauv xyoo tas los no tau qhia ib tug zoo sib xws. Rau kev tsim cov raj seamless, nws kuj yog los xyuas kom meej nws cov kev ua tau zoo thiab ntau lawm. HSCO kuj tau txais ntau lub tuam txhab tau qhuas nws, thiab kuv yuav muab qee cov lus qhia luv luv rau koj txog cov txheej txheem tsim cov raj seamless ntawm no, kom txhua tus tuaj yeem nkag siab nws.

Kev tsim cov txheej txheem ntawm seamless steel raj yog muab faib ua ob theem loj:

1. Kub dov (extruded seamless steel tube): round tube billet → cua sov → tho → peb-yob cross dov, nruam dov los yog extrusion → stripping → sizing (los yog txo) → txias → straightening → hydraulic test (los yog flaw detection) → kos npe → warehouse

Cov khoom siv raw rau dov seamless yeeb nkab yog round tube billet, thiab round tube embryo yuav tsum tau txiav los ntawm lub tshuab txiav kom loj hlob billets nrog ntev li ntawm 1 meter, thiab thauj mus rau lub cub tawg los ntawm conveyor siv. Billet yog noj rau hauv lub qhov cub kom sov, qhov kub thiab txias yog li 1200 degrees Celsius. Cov roj yog hydrogen lossis acetylene, thiab kev tswj qhov kub thiab txias hauv qhov cub yog qhov teeb meem tseem ceeb.

Tom qab lub round tube billet tawm ntawm lub cub tawg, nws yuav tsum tau pierced los ntawm lub siab piercer. Feem ntau, qhov ntau dua piercer yog lub khob hliav qab yob piercer. Hom piercer no muaj kev ua haujlwm siab, cov khoom lag luam zoo, loj perforation txoj kab uas hla nthuav dav, thiab tuaj yeem hnav ntau hom hlau. Tom qab piercing, lub round tube billet yog successively hla-dov, nruam dov los yog extruded los ntawm peb yob. Qhov no yog cov kauj ruam ntawm shaping seamless steel yeeb nkab, yog li nws yuav tsum tau ua tib zoo ua tib zoo. Tom qab extrusion, nws yog tsim nyog los tshem tawm lub raj thiab sizing. Sizing los ntawm high-speed rotary cone laum qhov rau hauv lub billet los tsim ib lub raj. Sab hauv txoj kab uas hla ntawm cov yeeb nkab steel yog txiav txim siab los ntawm qhov ntev ntawm lub taub sab nraud ntawm lub laum me ntsis ntawm lub tshuab sizing. Tom qab cov yeeb nkab steel yog qhov loj, nws nkag mus rau hauv cov cua txias ntauwd thiab txias los ntawm txau dej. Tom qab cov yeeb nkab steel yog txias, nws yuav ncaj. Tom qab straightening, cov yeeb nkab steel raug xa mus rau cov hlau tsis haum (lossis kuaj hydraulic) los ntawm txoj siv conveyor rau kev kuaj pom qhov tsis zoo. Tom qab ua haujlwm, yog tias muaj cov kab nrib pleb, npuas thiab lwm yam teeb meem hauv cov yeeb nkab steel, lawv yuav raug kuaj pom.

Tom qab kev soj ntsuam zoo ntawm cov kav dej steel, yuav tsum tau xaiv phau ntawv nruj. Tom qab kev soj ntsuam zoo ntawm cov yeeb nkab steel, pleev xim rau cov naj npawb, specification, ntau lawm batch tooj, thiab lwm yam nrog cov xim. Thiab hoisted mus rau hauv lub warehouse los ntawm crane. Nco ntsoov xyuas kom zoo ntawm cov yeeb nkab steel seamless thiab kev ua haujlwm ntawm cov txheej txheem nthuav dav.

2. Cold drawn (rolled) seamless steel tube: round tube blank → heating → tho → heading → annealing → pickling → oiling (tooj liab plating) → multi-pass txias drawing (txias dov) → blank raj → heat treatment → straightening → hydrostatic kuaj (kev kuaj pom qhov tsis haum) → kos npe → cia.

Ntawm lawv, txoj kev dov ntawm cov khaub thuas rub (dov) seamless steel raj yog qhov nyuaj dua li kub dov (extruded seamless steel raj). Thawj peb kauj ruam ntawm lawv cov txheej txheem tsim khoom yog qhov pib zoo ib yam. Yog li ntawd, nws yooj yim rau kev khiav lag luam. Qhov txawv yog tias pib los ntawm qib plaub, tom qab lub voj voog puag ncig yog khoob, nws yuav tsum tau taub hau thiab annealed. Tom qab annealing, siv ib tug tshwj xeeb acidic kua rau pickling. Tom qab pickling, thov roj. Tom qab ntawd nws yog ua raws los ntawm ntau qhov kev kos duab txias (txias dov) thiab kev kho cua sov tshwj xeeb. Tom qab kev kho cua sov, nws yuav ncaj. Tom qab straightening, cov yeeb nkab steel raug xa mus rau cov hlau tsis haum (lossis kuaj hydraulic) los ntawm txoj siv conveyor rau kev kuaj pom qhov tsis zoo. Yog tias muaj cov kab nrib pleb, npuas thiab lwm yam teeb meem hauv cov yeeb nkab steel, lawv yuav raug kuaj pom.

Tom qab cov txheej txheem no tiav lawm, cov kav dej steel yuav tsum dhau los ntawm kev xaiv nruj me ntsis tom qab kev tshuaj xyuas zoo. Tom qab kev soj ntsuam zoo ntawm cov yeeb nkab steel, pleev xim rau cov naj npawb, specification, ntau lawm batch tooj, thiab lwm yam nrog cov xim. Tom qab tag nrho cov hauj lwm no tiav lawm, lawv yuav hoisted mus rau hauv lub warehouse los ntawm ib tug crane.

Lub seamless steel raj muab tso rau hauv cia yuav tsum tau ua tib zoo khaws cia thiab kev tshawb fawb los xyuas kom meej tias cov hlau zoo seamless steel raj tawm hauv lub Hoobkas thaum lawv muag.