Hauj lwm lawm

Kev tsis

CCS DH40 Shipbuilding Steel Phaj - Siab -Strength Marine Steel rau Tsawg-Tsub Hull Structures

CCS DH40yog qhov siab dua - lub zog hull cov qauv hlau tau lees paub los ntawm Tuam Tshoj Classification Society (CCS). Qhov "D" nyob rau hauv cov qhab-nees qhia tau hais tias muaj kev cuam tshuam kev xeem ntawm-20 degree, uas txawv ntawm AH40 (kuaj ntawm 0 degree). "H" txhais tau tias siab dua - lub zog steel, thiab "40" yog hais txog qhov tsawg kawg nkaus tawm lub zog ntawm 40 kgf / mm² (kwv yees li 390 MPa).

DH40 yog tsim los ntawm kev siv cov hlau tua nrog kev kho cov qoob loo zoo thiab cov khoom siv microalloying (niobium, vanadium, titanium) kom ua tiav cov khoom siv kho tshuab. Kev kho cua sov zoo li qub thiab qis - qhov ntsuas qhov kub thiab txias yog qhov yuav tsum tau ua rau CCS DH40 shipbuilding steel daim hlau. Rau cov thicknesses qis dua 40mm, daim hlau yuav raug lees txais hauv kev tswj hwm -rolled mob; rau 40-100mm thickness, normalizing yog yuav tsum tau rau txhua phaj.

CCS DH40 muaj tib yam 390 MPa yield zog li AH40 tab sis nrog txhim khu kev qha cuam tshuam toughness ntawm -20 degree, ua rau nws haum rau cov qauv ntawm cov hlab ntsha ua hauj lwm nyob rau hauv txias marine ib puag ncig.

Kev Pov Hwm Zoo|Tag Nrho Certified & Traceable

Ib - nres kev yuav khoom steel

Cov ntawv pov thawj:Peb muabABS DH40, CCS DH40, LR DH 40, DNV-GL DH40, thiabBV DH40.

Traceability:Txhua lub phaj yog stamped nrog qib, kub tooj, thiab qhov ntev.

Kev tshuaj xyuas:Thib peb-kev soj ntsuam tog (SGS, BV) txais tos ntawm peb qhov chaw nres nkoj thauj khoom.

Hu rau tam sim no

Ntsiab Specifications & Tolerances

Chemical Composition (Ladle Analysis)

Element	Kev sib xyaw (%)
Cov pa roj carbon (C)	Tsawg dua lossis sib npaug li 0.18
Manganese (Mn)	0.90 – 1.60
Silicon (Si)	0.10 – 0.50
Phosphorus (P)	Tsawg dua lossis sib npaug li 0.035
Sulfur (S)	Tsawg dua lossis sib npaug li 0.035
Aluminium (Als)	Ntau dua lossis sib npaug rau 0.015
Niobium (Nb)	0.02 – 0.05
Vanadium (V)	0.05 – 0.10
Titanium (Ti)	Tsawg dua los yog sib npaug li 0.02
Copper (Cu)	Tsawg dua los yog sib npaug li 0.35
Chromium (Cr)	Tsawg dua los yog sib npaug li 0.20
Nickel (Ni)	Tsawg dua los yog sib npaug li 0.40
Molybdenum (hli)	Tsawg dua los yog sib npaug li 0.08

Mechanical Properties

Khoom	Tus nqi
Yield zog (min)	390 MPa ua
Tensile zog	510-650 MPa
Elongation (min, ntawm 50mm gauge)	20%
Impact Test Temperature	-20 degree
Lub zog cuam tshuam (Longitudinal, t Tsawg dua lossis sib npaug li 50mm)	Ntau dua lossis sib npaug li 41 J
Impact Zog (Transverse, t Tsawg dua lossis sib npaug li 50mm)	Ntau dua lossis sib npaug li 27 J

Muaj Dimensions

Parameter	Ntau yam
Thickness	3 hli-300mm
Dav	1200-4200 hli
Ntev	3000mm-18000mm

Cov yam ntxwv ntawm kev muab khoom

Thickness	Qhov xwm txheej
t Tsawg dua lossis sib npaug li 40mm	Tswj tau -Rolled (CR) lossis TMCP txais
40mm	Normalized (N) yuav tsum tau
t > 100mm	Normalized los yog TMCP ib specification

Daim ntawv thov|DH40 Steel siv qhov twg?

ship-hull-construction-keel-bilge-strakes-marine-steel

Nkoj Hulls

Nkoj Hull Kev Tsim Kho: Plhaub daim hlau, lawj daim hlau, longitudinal thiab transverse framing rau cov hlab ntsha ua hauj lwm nyob rau hauv txias marine ib puag ncig.

Offshore Projects

Tsau platforms, semi-submersibles, FPSO units.

offshore-platform-jack-up-rig-semi-submersible-fpso-steel-structure

marine-vessel-components-cargo-hold-hatch-cover-tanker-deck

Thawv nkoj: Siab - lub zog ntawm cov khoom siv uas yuav tsum tau txo cov phaj thickness.

LNG Tsheb thauj mus los: Cargo Tank Secondary Barrier Structures.

Cov neeg nqa khoom loj thiab VLCCs: Primary load- bearing structures.

Naval nkoj: High-kev ua haujlwm marine craft nrog txias- dej ua haujlwm.

ship-repair-retrofit-marine-hull-steel-plate-replacement

AH40, DH40, EH40, FH40 - Sib piv

Qib	Impact Test Temperature	Daim ntawv thov
AW 40	0 degree	Cov qauv nkoj dav dav, cov nkoj huab cua nruab nrab
DH40	-20 degree	Cov nkoj ua haujlwm hauv cov dej txias, cov dej khov hauv chav kawm
EH 40	-40 degree	Arctic thiab polar cov hlab ntsha
FH40	-60 degree	Tsawg heev - qhov kub thiab txias ib puag ncig

Rau tuab txog 50 hli, tag nrho plaub qib yuav tsum muaj qhov cuam tshuam tsawg kawg nkaus ntawm 41 J (ntev) thiab 27 J (transverse). Rau cov thicknesses tshaj 50 hli, DH40 thiab AH40 kev cuam tshuam yuav tsum txawv ntawm EH40 thiab FH40.

Quality Assurance thiab Certification

CCS DH40 daim hlau tuaj yeem raug lees paub los ntawm ntau lub koom haum thoob ntiaj teb kev faib tawm:

CCS (China Classification Society)

ABS (American Bureau of Shipping)

LR (Lloyd's Register)

DNV (Det Norske Veritas)

BV (Bureau Veritas)

NK (Nippon Kaiji Kyokai)

KR (Korean Register)

RINA (Registro Italiano Navale)

Kev kuaj ntxiv thiab kev pabcuam

Kev kuaj ultrasonic (UT)Qauv: ASTM A435, A577, A578.

Z-kev taw qhia kev kuaj: Z15, Z25, Z35.

Charpy V-Ntch Impact Test: Ntawm -20℃raws li tus qauv.

Thib peb-Kev soj ntsuam tog: SGS, TUV, lossis lwm tus neeg soj ntsuam ywj pheej.

Mill Test Certificate: EN 10204 Hom 3.1/3.2.

Kev kho saum npoo: Txhaj tshuaj blasting, pleev xim, thiab txheej muaj raws li kev thov.

Ntim & Xa

Ntim: Txheem export seaworthy packing los yog raws li tus neeg yuav tsum tau muaj.

Lub sij hawm xa tuaj: 7 hnub rau cov khoom lag luam, 30-50 hnub rau kev txiav txim ntau lawm.

Chaw thau khoom PortsChaw nres nkoj: Shanghai, Tianjin, Qingdao.

vim li cas ho xaiv peb?

Tshuag Muaj:Peb khaws 5, 000+ tons ntawmDH40 shipbuilding phajnyob rau hauv qhov ntau thiab tsawg (6m, 9m, 12m) npaj rau kev xa tawm tam sim.

Kev cai txiav:Peb muab kev txiav profile, beveling, thiab kev pabcuam kom txuag koj lub sijhawm tsim.

Fast Logistics:Kev xa khoom zoo los ntawm kev tawg lossis ntim rau cov chaw nres nkoj loj thoob ntiaj teb (Rotterdam, Houston, Singapore, Dubai).

Competitive Nqe:Direct mill kev koom tes txhais tau tias tsis muaj cov neeg nruab nrab markups.

Tau txais cov lus hais hauv 24 teev

ib - nres kev daws teeb meem

pab neeg tshaj lij

siab zoo

peb cov neeg koom tes

Peb ntseeg los ntawm

Kev ntsuas tus neeg siv

Peb siv CCS DH40 rau lub plhaub plating ntawm ob lub polar mov nkoj. Cov txiaj ntsig ntawm -20℃qhov kev ntsuam xyuas tau zoo tas li siab dua 50 J. Cov paib zoo li qub tuaj txog tiaj tus thiab nyob rau hauv kev ua siab ntev. Tsis muaj teeb meem nrog txias tawg thaum lub caij ntuj no fabrication.

Mr. Chen Wei

Singapore · Loj Shipbuilding thiab Kho Pab Pawg

Peb cov neeg siv cov kev khiav hauj lwm tsuas yog xav tau -20℃cuam tshuam toughness, yog li DH40 yog tus nqi -kev xaiv zoo tshaj EH40. Thicknesses ntawm 15mm mus rau 60mm tag nrho cov neeg thib peb UT yam tsis muaj kev tsis lees paub. Weldability yog piv rau AH36 nrog preheat kom zoo.

Ms. Nguyen Thi Hong

Haiphong · Shipbuilding Group of Vietnam

Peb taug qab ladle tsom xam rau txhua kauj thiab phaj. Peb cov khoom xa tuaj ntawm CCS DH40 dhau 18 lub hlis tau pom qhov sib txawv me me ntawm cov pa roj carbon sib npaug thiab microalloying cov ntsiab lus. TMCP daim hlau muaj cov qauv zoo ib yam thoob plaws.

Mr. Rajesh Kumar

Kochi, India · Ship Repair Yard

FAQ

01.Dab tsi yog "DH40" sawv rau hauv shipbuilding steel?

Qhov "D" qhia txog qhov kev sim ntawm -20℃. "H" sawv cev rau cov hlau muaj zog dua. "40" yog hais txog qhov tsawg kawg nkaus tawm lub zog ntawm 40 kgf / mm², kwv yees li 390 MPa hauv metric units.

02.Dab tsi yog qhov txawv ntawm DH40 thiab AH40?

Ob leeg muaj qhov tsawg kawg nkaus tawm lub zog (390 MPa) thiab tensile zog (510 - 650 MPa). Qhov txawv yog qhov ntsuas kub ntawm qhov ntsuas kub: AH40 yog kuaj ntawm 0 degree, thaum DH40 kuaj ntawm -20 degree. DH40 kuj feem ntau muaj kev tswj hwm nruj dua ntawm cov tshuaj muaj pes tsawg leeg thiab kev ua haujlwm deoxidation kom ua tiav cov tawv tawv zoo ntawm qhov ntsuas kub qis.

03.Yuav tsum tau kho cua sov dab tsi rau CCS DH40 daim hlau?

los yog thickness nyob rau hauv 40 hli, tswj - dov los yog TMCP mob yog feem ntau txais. Rau cov thicknesses ntawm 40mm thiab 100mm, kev faib cov kev cai yuav tsum normalizing rau txhua phaj los xyuas kom meej uniform mechanical zog los ntawm tag nrho cov thickness. Ib txwm txheeb xyuas qhov kev xav tau tshwj xeeb nrog rau cov koom haum kev faib cais.

04.Yuav ua li cas preheating rau vuam CCS DH40?

DH40 muaj cov pa roj carbon ntau dua li qub - qib zog, yog li pom zoo ua ntej ua ntej. Rau thicknesses nyob rau hauv 25 hli, preheat ib ncig ntawm 50-75℃yog feem ntau. Rau cov seem tuab (ntau tshaj 40mm), preheat nyob rau hauv 100-150℃ntau yam. Tsawg-Hydrogen vuam consumables (2Y40 los yog 3Y40 qib ib CCS yuav tsum tau) yuav tsum tau siv. Ib txwm ua raws li cov txheej txheem vuam kev pom zoo nrog kev tswj cov cua sov.

Cim npe nrov: dh40 nkoj tsim steel phaj, Tuam Tshoj dh40 nkoj tsim steel phaj lwm tus neeg