Peb feem ntau hais tias cov yeeb nkab kub-expanded yog hais txog cov yeeb nkab steel uas tsis tshua muaj qhov ntom ntom tab sis muaj zog shrinkage, Tuam Tshoj National Standards Association tau hais tias cov yeeb nkab kub-expanded steel yeeb nkab yuav tsum yog cov yeeb nkab loj-inch steel yeeb nkab nthuav dav thiab deformed tom qab tag nrho cov cua sov ntawm cov yeeb nkab steel yeeb nkab.. cov kav dej tuaj yeem tsim tau siv cov kav dej txheem, thiab tus nqi qis thiab cov khoom siv tau zoo heev. Nws yog ib txoj hauv kev ua rau cov kav dej seamless. Vim qhov kev loj hlob tsis zoo ntawm cov hluav taws xob cog boilers thiab kev loj hlob ntawm cov nroj tsuag petrochemical, qhov kev thov rau cov kav dej loj seamless kuj nce ntxiv, thiab nws nyuaj rau cov yeeb nkab dov los tsim cov raj seamless uas diameters ntau dua 508 hli, qhov sib piv ntawm sab nraud txoj kab uas hla mus rau phab ntsa thickness (D / S)> 25, thermal expansion technology, tshwj xeeb tshaj yog cov thev naus laus zis thev naus laus zis.

 

Ob-kauj ruam propelling yeeb nkab expander siv rau kub-expanded steel kav muab cone tuag txoj kab uas hla expansion technology, digital intermediate zaus induction cua sov tshuab, thiab hydraulic technology nyob rau hauv ib lub tshuab. Nrog nws cov txheej txheem tsim nyog, kev siv hluav taws xob qis dua, kev tsim kho qis dua, thiab cov khoom lag luam zoo, ntau yam ntawm cov khoom siv raw thiab cov khoom tshwj xeeb, kev yooj yim thiab cov khoom siv qis qis tau hloov pauv cov tsoos rub-hom txoj kab uas hla expansion tshuab ntawm steel yeeb nkab kev lag luam.

 

Nws yuav tsum raug sau tseg tias cov khoom siv hluav taws xob ntawm cov kav hlau kub nthuav dav feem ntau yog me ntsis phem dua li cov kav hlau kub-kuav los tiag.

 

Cov txheej txheem dav dav ntawm thermal expansion ntawm cov yeeb nkab yog kho cov yeeb nkab ntawm cov ntsia hlau hlau, muab lub khob hliav qab-zoo li lub tog raj kheej nrog ib txoj kab uas hla loj dua li txoj kab uas hla ntawm cov yeeb nkab mus rau lwm qhov kawg ntawm cov yeeb nkab, thiab txuas thiab kho lwm cov ntsia hlau hauv cov yeeb nkab. Kev sib txuas ntawm cov yeeb nkab thiab sab saum toj kawg nkaus yog nyob rau hauv qab ntawm qhov nruab nrab zaus cua sov kauj, txhawm rau tiv thaiv cov cua kub ceev heev thiab tawg, koj yuav tsum tau hla dej hauv lub raj ua ntej, pib lub coil cua sov, thiab tom qab ncav cuag qhov ntsuas kub, cov ntsia hlau uas txuas lub raj thawb lub raj, kom lub raj txav mus rau sab saum toj anvil thiab txuas ntxiv mus. Sab saum toj anvil taper enlarge cov yeeb nkab txoj kab uas hla. Tom qab tag nrho cov yeeb nkab dhau lawm, cov yeeb nkab yuav tsis ncaj vim yog cov txheej txheem thermal expansion, yog li nws yuav tsum tau ncaj qha.

Cov saum toj no yog cov ntsiab lus ntawm thermal expansion technology.

 Cov hauv qab no yog cov qauv tsim ntawm thermal nthuav cov yeeb nkab

 

Expanded nyhav:

carbon hlau: (inch-thickness)× tuab× 0.02466 TZS = 0t ntawm ib ' meter ' (kg)

hlau: (inch-thickness)× tuab× 0.02483 TZS = 0ib ' meter ' (kg)

tus naj npawb ntawm meters tom qab kub nthuav:

thawj tube Diameter÷ kub nthuav txoj kab uas hla× 1.04 ib× ntev *

 

thawj tube meters:

nthuav dav× (inch÷ tube diam÷ 1.04)

 

ceev:

100000÷ (Original diam-thickness× thickness)

 

thickness:

expanded thickness (1 lub sij hawm) ) = Thawj tube thickness× 0.92 ib

Expanded thickness (2 zaug) = Thawj tube thickness * 0.84

 

Txoj kab uas hla:

Expanded txoj kab uas hla = pwm loj + nthuav thickness× 2

Pwm loj: nthuav txoj kab uas hla—2 * nthuav phab ntsa Thickness

 

Txoj kab uas hla:

Txoj kab uas hla＜426mm, siab±2.5

Txoj kab uas hla 426-630mm, kam rau ua±3

Txoj kab uas hla＞630mm, kam rau ua±5

 

Ellipticity:

Txoj kab uas hla＜426mm, siab±2

Txoj kab uas hla＞426mm, siab±3

 

Thickness:

tuab≤20mm, kam rau ua﹢2 ,—1.5

tuab≤40 mm, ﹢3 ,—2

Pipe rau kev ua yeeb nkab haum

﹢5 ,—0

 

Sab hauv thiab sab nraud ntawm khawb:

 

Scratch tob: 0.2mm, ntev: 2cm, nws yog hu ua khawb. Tsis pub

Ncaj: ≤6m, khoov yog 5mm, ≤12m, khoov yog 8mm

 

Piv txwv li:

Thawj tube 610 * 19 kub nthuav dav 660 * 16

Thawj yeeb nkab ntev: 12.84meter

nthuav dav: 19 * 0.92 = 17.48 (1 zaug)

19 * 0.84 = 15.96(2x ua)

Qhov ntev ntawm cov yeeb nkab: 610 ÷ 660 * 1.04 * 12.84 = 12.341962

Txoj kab uas hla: 625 + 17.48 * 2 + 1 = 660.96 (1 zaug)

625 + 15.96 * 2 + 1 = 657.92 (2 zaug)

 

Module Loj: 660-2 * 16 = 628