A500 grb Hollow Structure Sections piav qhia
A500 Gr B square thiab rectangular raj xa mus rau txias - tsim, welded carbon steel hollow structural seem uas ua raws li tus qauv ASTM A500, tshwj xeeb yog Qib B.
Qhov zoo
Tus nqi -Kev ua tau zoo: Muab qhov sib npaug zoo ntawm kev ua haujlwm thiab tus nqi, ua rau nws yog qhov kev xaiv nrov rau kev siv cov qauv siv.
Yooj yim ntawm Fabrication: tuaj yeem txiav tau yooj yim, welded, khoov, thiab koom nrog, ua kom yooj yim rau kev tsim kho thiab tsim cov txheej txheem.
Ntau yam: Muaj nyob rau hauv ntau qhov ntau thiab tsawg thiab thicknesses kom haum raws li kev cai tsim.
Durability: Thaum muaj kev tiv thaiv zoo (piv txwv li, los ntawm kev pleev xim lossis galvanizing), nws muab kev ua haujlwm ntev - nyob rau hauv ib puag ncig sab hauv tsev thiab sab nraum zoov.
ASTM A500 Qib B Chemical Composition
| Element | Qib B (%) |
| Cov pa roj carbon (C) | 0.26 max |
| Manganese (Mn) | 1.35 max |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.035 max |
ASTM A500 Qib B Mechanical Properties
| Khoom | Qib B |
| Yield zog (min) | 290 MPa (42 ksi) |
| Tensile zog (min) | 400 MPa (58 ksi) |
| Elongation (%) | 23 |
Kev tsim cov txheej txheem ntawm ASTM A500 Tubing
1. Kev xaiv raw khoom
Hlau Coils: Cov khoom siv tseem ceeb yog kub- dov los yog txias - dov steel coils, feem ntau yog ua los ntawm carbon steel nrog cov tshuaj muaj pes tsawg leeg uas ua raws li ASTM A500 Qib B uas yuav tsum tau ua.
Kev Tswj Xyuas Zoo: Cov hlau coils tau raug kuaj xyuas zoo rau cov tshuaj lom neeg muaj pes tsawg leeg, thickness uniformity, thiab defects nto kom ntseeg tau tias tsim nyog rau kev tsim cov raj.
2. Uncoiling thiab Leveling
Uncoiling: Lub steel kauj yog uncoiled los ua ib tug nruam sawb.
Leveling: Lub strip dhau los ntawm lub tshuab leveling kom tshem tawm txhua qhov curvature lossis nthwv dej, ua kom lub tiaj tiaj thiab txawm nto rau kev ua haujlwm tom ntej.
3. Txheej txheem txheej txheem
Txias-Kev tsim: Cov qib steel sawb yog pub rau hauv cov menyuam yaus uas maj mam ua rau hauv qhov qhib square lossis duab plaub. Cov txheej txheem no yog ua tiav ntawm chav tsev kub, txhim kho cov khoom siv zog los ntawm kev ua haujlwm hardening.
Ntug Kev Npaj: Cov npoo ntawm cov sawb tau npaj (xws li, trimmed los yog beveled) kom ntseeg tau tias kev sib raug zoo thiab vuam hauv cov kauj ruam tom ntej.
4. Vuam
Electric Resistance Vuam (ERW): Qhov qhib profile yog dhau los ntawm vuam yob qhov twg cov npoo raug nias ua ke thiab welded siv siab - zaus hluav taws xob tsis kam. Qhov no tsim muaj zog, nruam weld raws qhov ntev ntawm lub raj.
Kev tshuaj xyuas Weld: Cov weld seam raug tshuaj xyuas rau qhov tsis xws luag siv tsis yog -kev kuaj kev puas tsuaj xws li kev kuaj ultrasonic lossis eddy tam sim no kuaj kom ntseeg tau tias weld kev ncaj ncees.
5. Sizing thiab Shaping
Sizing Mills: Lub raj welded hla dhau los ntawm sizing yob uas kho nws qhov ntev mus rau qhov yuav tsum tau muaj qhov loj thiab cov duab (square lossis rectangular). Cov kauj ruam no ua kom lub raj ua tau raws li qhov teev txheej sab nraud, phab ntsa tuab, thiab qhov siab ncaj.
Txias: Tom qab sizing, lub raj yog txias, feem ntau los ntawm kev tswj cua txias kom txo tau cov kev ntxhov siab sab hauv thiab stabilize lub microstructure.
6. Txiav thiab End Finishing
Txiav: Lub raj txuas txuas yog txiav mus rau qhov ntev uas xav tau siv ya hla- tawm saws lossis cov cuab yeej zoo sib xws.
Xaus Xaus: Qhov kawg txiav tuaj yeem raug tshem tawm los yog beveled kom tshem tawm cov npoo ntse thiab npaj lawv rau vuam lossis koom nrog hauv daim ntawv thov.
7. Kev kho cua sov (yeem)
Annealing los yog Normalizing: Qee zaum, cov raj yuav raug kho cua sov los txhim kho lawv cov khoom siv kho tshuab, xws li ductility lossis toughness, tshwj xeeb tshaj yog xav tau los ntawm cov neeg siv khoom tshwj xeeb.
8. Kev kho saum npoo
Ntxuav: Cov raj raug ntxuav kom tshem tawm cov roj, nplai, lossis cov khib nyiab los ntawm cov txheej txheem tsim khoom.
Txheej: Nyob ntawm daim ntawv thov, cov raj yuav raug coated nrog kev tiv thaiv- kev kho corrosion xws li pleev xim, galvanizing (kub-dip lossis electro- galvanizing), lossis lwm yam kev tiv thaiv ua tiav los txhim kho cov kav ntev.
9. Kev Tswj Xyuas Zoo thiab Kev Xeem
Dimensional soj ntsuam: Cov raj raug kuaj xyuas qhov ntev, suav nrog txoj kab uas hla, phab ntsa thickness, squareness, thiab ncaj, siv cov cuab yeej ntsuas ntsuas.
Mechanical Testing: Cov qauv raug coj mus rau tensile, tawm lub zog, thiab elongation xeem los xyuas kom meej raws li ASTM A500 Qib B specifications.
Kev tshuaj xyuas qhov muag: Qhov zoo ntawm qhov chaw thiab qhov vuam zoo li yog qhov pom kev kuaj xyuas qhov tsis xws luag.
10. Ntim thiab Shipping
Ntim: Cov raj ua tiav tau muab qhwv, qhwv, thiab tiv thaiv nrog lub kaus mom lossis lub tes tsho yas los tiv thaiv kev puas tsuaj thaum thauj.
Kev xa khoom: Cov hlab ntim tau ntim rau hauv cov tsheb thauj khoom lossis cov thawv ntim khoom xa tuaj rau cov neeg siv khoom lossis chaw cia khoom.
Kev kuaj thiab tshuaj xyuas
Ntim thiab shipping
