Q345B tuab phab ntsa square yeeb nkab zoo
Loj txoj kab uas hla tuab phab ntsa square yeeb nkab yog ib yam ntawm lub teeb tuab phab ntsa steel yeeb nkab nrog hollow square seem, kuj hu ua steel txias-tsim profile. Nws yog cov hlau seem uas muaj cov duab plaub thiab qhov loj, uas yog ua los ntawm Q235 kub dov los yog txias dov strip los yog coil raws li cov khoom siv hauv paus, txias khoov thiab vuam ntau zaus.
Raws li cov txheej txheem tsim khoom, qhov loj-inch tuab phab ntsa square yeeb nkab yog muab faib ua kub dov tuab phab ntsa square yeeb nkab, txias kos tuab phab ntsa square yeeb nkab, extruded tuab phab ntsa square yeeb nkab thiab welded square yeeb nkab.
(a) Raws li cov txheej txheem - arc vuam square raj, tsis kam vuam square tube (siab zaus thiab tsis tshua muaj zaus), roj vuam square raj thiab lub cub tawg vuam square raj
(b) Muab faib los ntawm weld - ncaj welded square yeeb nkab thiab kauv welded square yeeb nkab
Loj txoj kab uas hla tuab phab ntsa square yeeb nkab yog muab faib ua zoo tib yam carbon steel square yeeb nkab thiab qis alloy square yeeb nkab raws li cov khoom. Cov pa roj carbon zoo tib yam tau muab faib ua: Q195, Q215, Q235, SS400, 20 # steel, 45 # steel, thiab lwm yam; Cov hlau tsis tshua muaj hlau tau muab faib ua Q345, 16Mn, Q390, St52-3, thiab lwm yam.
Square steel yeeb nkab, tuab phab ntsa square steel yeeb nkab, loj txoj kab uas hla square steel yeeb nkab, seamless square steel yeeb nkab, qis alloy square steel yeeb nkab, 135 * 135 * 10 square steel yeeb nkab, square steel yeeb nkab rau ntauwd crane, Q345B low alloy square steel yeeb nkab, 20 # seamless square steel yeeb nkab
Square raj, raws li lub npe qhia, yog ib hom square raj. Ntau cov ntaub ntawv tuaj yeem tsim lub raj square. Nws yog siv rau, yuav ua li cas thiab qhov twg siv. Feem ntau cov square tubes yog steel tubes, feem ntau cov qauv square raj, hniav square raj, lub tsev square raj, thiab lwm yam
Square yeeb nkab yog lub npe rau cov yeeb nkab square, uas yog, cov yeeb nkab steel nrog qhov sib npaug sab ntev. Nws yog ua los ntawm dov strip steel tom qab kev kho mob. Feem ntau, cov sawb hlau yog unpacked, leveled, crimped thiab welded los ua ib tug puag ncig yeeb nkab, ces dov mus rau hauv ib lub square yeeb nkab, thiab ces txiav mus rau hauv qhov ntev yuav tsum tau. Feem ntau 50 daim ib pob.
Square raj tuaj yeem muab faib ua seamless thiab welded sawv daws yuav. Seamless square raj yog extruded los ntawm seamless ncig raj. Square steel yeeb nkab, tuab phab ntsa square steel yeeb nkab, loj txoj kab uas hla square steel yeeb nkab, seamless square steel yeeb nkab, qis alloy square steel yeeb nkab, 135 * 135 * 10 square steel yeeb nkab, square steel yeeb nkab rau ntauwd crane, Q345B low alloy square steel yeeb nkab, 20 # seamless square steel yeeb nkab
1. Performance index tsom xam ntawm square tube - plasticity
Plasticity yog hais txog lub peev xwm ntawm cov ntaub ntawv hlau los tsim cov yas deformation (mus tas li deformation) yam tsis muaj kev puas tsuaj nyob rau hauv load.
2. Performance index tsom xam ntawm square tube - hardness
Hardness yog lub pointer los ntsuas qhov hardness thiab softness ntawm cov ntaub ntawv hlau. Tam sim no, feem ntau siv txoj kev ntsuas hardness hauv ntau lawm yog txoj kev indentation hardness. Nws siv lub indenter nrog ib qho geometry los nias rau hauv qhov chaw ntawm cov khoom siv hlau kuaj nyob rau hauv ib qho kev thauj khoom, thiab txiav txim siab nws cov nqi hardness raws li qib ntawm indentation.
Cov kev siv feem ntau suav nrog Brinell hardness (HB), Rockwell hardness (HRA, HRB, HRC) thiab Vickers hardness (HV).
3. Performance index tsom xam ntawm square tube - qaug zog
Lub zog, plasticity thiab hardness tau tham saum toj no yog tag nrho cov cim qhia ntawm cov khoom siv hluav taws xob ntawm cov hlau hauv qab static load. Qhov tseeb, ntau lub tshuab qhov chaw ua haujlwm nyob rau hauv cyclic load, nyob rau hauv uas qaug zog yuav tshwm sim.
4. Performance index tsom xam ntawm square tube - cuam tshuam toughness
Lub load ua haujlwm ntawm qhov nrawm yog hu ua cuam tshuam load, thiab lub peev xwm ntawm cov hlau los tiv thaiv tsis ua hauj lwm hauv kev cuam tshuam yog hu ua cuam tshuam toughness.
5. Kev ntsuas ntsuas ntawm cov yeeb nkab square - lub zog square steel yeeb nkab, tuab phab ntsa square steel yeeb nkab, loj txoj kab uas hla square steel yeeb nkab, seamless square steel yeeb nkab, qis alloy square steel yeeb nkab, 135 * 135 * 10 square steel yeeb nkab, square steel yeeb nkab rau ntauwd crane , Q345B qis alloy square steel yeeb nkab, 20 # seamless square steel yeeb nkab
Lub zog yog hais txog qhov tsis kam ntawm cov ntaub ntawv hlau rau kev ua tsis tiav (cov yas deformation ntau dhau los yog tawg) nyob rau hauv cov khoom zoo li qub. Txij li cov kev ua haujlwm ntawm cov khoom muaj xws li nro, compression, dabtsi yog khoov thiab shear, lub zog kuj muab faib ua tensile zog, compressive zog, flexural zog thiab shear zog. Feem ntau muaj qee qhov kev sib txuas ntawm ntau lub zog. Feem ntau, lub zog tensile yog siv los ua qhov taw qhia lub zog tshaj plaws.
