ERW Tubing vs DOM Tubing: Dab tsi yog qhov txawv?

Thaum engineers los yog buyers sib pivERW Tubingvs DOM Tubing, cov lus nug tseem ceeb tsis yog "qhov twg zoo dua?" Qhov teeb meem tiag tiag yog seb qhov kawg xav tau qhov kev tswj qhov ntev ntxiv uas tsim los ntawm kev kos duab txias.

Feem ntauDOM tubingpib raws li ERW tubing thiab tom qab ntawd dhau los ntawm cov txheej txheem kev kos duab ntxiv hla lub mandrel. Kev nkag siab tias qhov sib txawv pab cov neeg yuav khoom xaiv lub raj zoo yam tsis tau them nyiaj rau qhov tseeb daim ntawv thov tsis xav tau tiag tiag.

ERW stands rau Hluav taws xob Resistance Welded tubing; Nws yog tus qauv welded steel yeeb nkab siv thoob plaws hauv kev lag luam thiab ua cov khoom siv tseem ceeb rau cov khoom siv kho tshuab raj. Nws cov txheej txheem tsim khoom tseem ceeb yog streamlined thiab ua tau zoo- muaj xws li steel strip uncoiling, yob txoj kev, siab -frequency resistance welding, weld hlaws trimming, thiab sizing/cutting-tsis tas yuav tsum tau txias txias- kos duab lossis ua tiav cov kauj ruam, ua kom muaj txiaj ntsig zoo {6}.

I. Weld yam ntxwv

ERW steel kav muaj qhov ruaj khov longitudinal weld. Thaum lub sij hawm tsim khoom, cov hlaws txuas sab nraud yog hauv av los xyuas kom meej qhov du, huv si sab nrauv; Txawm li cas los xij, cov hlaws hauv cov hlaws feem ntau yog sab laug lossis tsuas yog txiav me me, nrog rau qhov tshwj xeeb ua tiav raws li cov lus qhia tshwj xeeb thiab kev txiav txim. Cov yam ntxwv no ua rau muaj kev txwv sab hauv roundness thiab phab ntsa uniformity; yog li ntawd, yog siv rau lub tes tsho, bushings, los yog precision - haum cov khoom, kev sib dhos raug thiab kev ua haujlwm ruaj khov yuav raug cuam tshuam.

II. Dimensional raug

Thaum qhov sib xws ntawm cov kab thiab phab ntsa tuab ntawm cov txheej txheem ERW steel kav ua tau raws li cov qauv kev cai dav dav -nrog rau kev kam rau siab poob rau hauv kev lag luam- tus qauv txwv - qhov tsis muaj qhov txias - kos calibration ua rau muaj qhov sib txawv ntawm qhov sib txawv ntawm qhov sib txawv, qhov sib txawv, thiab phab ntsa thickness uniformity. Yog li, lawv tsis tsim nyog rau cov ntawv thov uas xav tau siab -precision los ua ke lossis precision machining.

III. Common Applications ntawm ERW Tubing

Lub ntsiab kom zoo dua ntawm ERW steel kav yog lawv cov nqi -kev ua tau zoo thiab kev ua tau zoo, ua rau lawv qhov kev xaiv zoo tshaj plaws rau cov ntawv thov uas tsis xav tau qhov tseeb qhov tseeb qhov tseeb lossis qhov tseeb sab hauv - haum rau qhov ntev. Cov ntawv thov muaj xws li cov cuab yeej txhawb nqa, cov qauv tsim qauv, cov khoom siv tshuab dav dav, cov khoom siv ua liaj ua teb, cov khoom siv kho vajtse dav dav, thiab cov qauv tsheb tsim qauv.

DOM(Drawn Over Mandrel) steel tubing yog qhov tseeb -cov khoom tiav tau los ntawm ERW (Electric Resistance Welded) tubing; nws tsis yog seamless steel tubing -ib qho tseem ceeb sib txawv uas feem ntau to taub yuam kev hauv kev lag luam. Nws feem ntau yog tsim los ntawm kev noj ERW tubing ua cov khoom siv hauv paus thiab ua rau nws txias - txheej txheem kos duab siv lub qhov tuag thiab mandrel.

I. DOM Steel Tube Manufacturing txheej txheem

ERW lub hauv paus raj → Kev kho cua sov (annealing) raws li qhov yuav tsum tau ua → Cold drawing nrog tuag → Precision sizing hla lub mandrel → Ncaj thiab shaping → nto tiav → Tshuaj xyuas thiab xa. Piv nrog rau cov qauv ERW steel tubes, qhov tseem ceeb ntxiv ntawm mandrel txias- txheej txheem kos duab hauv paus optimizes lub raj qhov tseem ceeb tsis.

II. Weld Seam Yam ntxwv

DOM steel raj tsis seamless; cov khoom siv hauv paus khaws cov ERW longitudinal weld seam. Txawm li cas los xij, los ntawm kev sib xyaw ua ke ntawm mandrel txias kos duab, kho cua sov, thiab ua tiav cov txheej txheem, microstructure hauv thaj tsam weld yog refined thiab homogenized. Dimensional variations thiab structural defects ntawm lub weld yog zoo tshem tawm, ua lub weld qhov chaw ze li indistinguishable rau lub qhov muag liab qab los yog thaum lub sij hawm soj ntsuam tus txheej txheem, thaum ho txhim kho tag nrho cov uniformity ntawm lub raj.

III. DOM Tube Applications

DOM precision steel hlab yog tsim los rau precision machining thiab kev ua haujlwm sib dhos daim ntawv thov. Lawv feem ntau yog siv rau precision automotive Cheebtsam (chassis qhov chaw, yob tawb, kis tau tus mob tes tsho, shock absorber Cheebtsam), hydraulic thiab pneumatic system piping, precision machinery bushings thiab lub tes tsho, precision rollers, precision thav duab rau automation khoom, siab -kawg ua liaj ua teb machinery qhov chaw, thiab precision load{2}}b.

Qhov tseem ceeb tshaj plaws los sib pivERW Tubing vs DOM Tubingyog saib dab tsi cov khoom tiav lawm xav tau.

I. Puas yog DOM Tubing muaj zog dua ERW Tubing?

Nws tsis yog ib qho yooj yim teeb meem ntawm generalization. DOM steel kav, los ntawm kev kos duab txias, kho cov hlau lub microstructure, uas ua rau muaj zog ntau dua thiab tensile zog dua li cov ERW steel kav zoo tib yam li cov khoom siv thiab cov cua sov- kev kho mob. Txawm li cas los xij, lub zog kawg ntawm cov yeeb nkab yog nyob ntawm qib steel (1020, 1026, 4130, thiab lwm yam), qhov zoo ntawm cov khoom siv hauv paus, tus nqi ntawm qhov txias txias, thiab cov cua sov zaum kawg -kev kho mob.

Yooj yim tso: DOM sawv cev rau kev hloov kho qhov tseeb machining txheej txheem, tsis yog qib siab dua ntawm cov hlau. Lub zog tsis tuaj yeem txiav txim tsuas yog raws li cov khoom siv thiab kev ua haujlwm.

II. Qhov twg muaj qhov zoo dua qhov tseeb?

DOM steel kav ua rau tag nrho precision. Kev siv lub mandrel txias- txheej txheem kos duab tiav, nws txoj kab nruab nrab sab hauv thiab sab nrauv tolerances, phab ntsa thickness uniformity, roundness, thiab coaxiality yog tag nrho cov precisely tswj, uas ua rau ib tug du nyob rau hauv qhov chaw tsis muaj weld defects.

Hauv cov ntawv thov xws li bushings, tes tsho, hydraulic fittings, thiab precision shafts, DOM (Determined Osmosis) steel kav yuav txo tau cov nyiaj txiag tom ntej xws li tho txawv, honing, thiab shaping, txo cov nqi tiav thiab cov nqi seem. ERW (Extended Eroded Wrap) steel kav, ntawm qhov tod tes, muaj ntau qhov sib txawv ntawm qhov sib txawv thiab qhov chaw tsis xws luag, thiab tsuas yog tsim rau cov qauv uas tsis tas yuav tsum muaj qhov haum.

III. Dab tsi yog qhov zoo dua rau kev khoov thiab Fabrication?

Ib qho kev xav tsis zoo yog tias DOM, nrog rau nws qhov siab dua thiab qhov zoo, yog qhov tsim nyog rau txhua qhov kev khoov. Qhov no tsis yog li ntawd.

Tom qab kev kos duab txias, DOM cov kav hlau muaj zog tuaj yeem ua rau muaj zog thiab ua kom muaj zog, me ntsis txo elongation, thiab hloov pauv hloov. Cov nyhuv dabtsi yog khoov ntawm cov yeeb nkab feem ntau nyob ntawm cov yeeb nkab txoj kab uas hla, phab ntsa thickness, dabtsi yog khoov vojvoog, qib steel, thiab lub xeev kho cua sov, tsis tsuas yog nyob rau qhov sib txawv ntawm ERW thiab DOM txheej txheem.

Yog li ntawd, cov neeg yuav khoom npaj khoov, vuam, lossis kev ua haujlwm yuav tsum ntsuas cov txheej txheem ua tiav es tsis xaiv cov tubing raws li lub npe tsim khoom.

I. Thaum twg Koj Yuav Tsum Xaiv ERW Tubing?

1. Tsis nruj me ntsis kam rau ua; siv feem ntau rau kev thauj khoom -cov kabmob lossis cov qauv tsim
2. Sab hauv phab ntsa tsis yog qhov chaw ua haujlwm zoo; tsis xav tau ib tug du, precision haum
3. Tsis muaj cov txheej txheem ua tiav tom ntej yuav tsum tau ua; tsuas yog yooj yim txiav thiab vuam / sib sau
4. Qhov project pob nyiaj siv yog qhov tseem ceeb; tsom rau tus nqi -kev ua tau zoo
5. Cov ntawv thov muaj xws li: thav duab, brackets, kev txhawb nqa, thiab cov khoom siv dav dav

II. Thaum twg Koj Yuav Tsum Xaiv DOM Tubing?

1. Cov kev cai nruj nruj rau sab hauv / sab nraud txoj kab uas hla tolerances, phab ntsa thickness uniformity, thiab concentricity
2. Sab hauv phab ntsa yog qhov tseem ceeb ua haujlwm saum npoo uas xav tau smoothness, flatness, thiab nruj haum
3. Yuav tsum tau precision tiav txheej txheem xws li tig thiab honing; aims rau tsawg kawg machining nyiaj pub thiab tsawg seem seem
4. Siv rau hauv cov ntawv tseem ceeb xws li tsheb qhov chaw, hydraulic Cheebtsam, precision machinery, chassis yob tawb, thiab precision ua liaj ua teb khoom