1. Lo lus nug: Cov kev hloov pauv dab tsi tshwm sim hauv cov khoom siv ntawm Q255 thiab Q275 steel kav tom qab ua haujlwm txias? Puas yuav tsum tau kho cua sov tom qab ua haujlwm txias?
Teb: Tom qab ua haujlwm txias (xws li kos duab txias, txias khoov, lossis txias dov), cov khoom siv ntawm Q255 thiab Q275 steel kav yuav hloov pauv ntau: yield zog, tensile zog, thiab hardness yuav nce ntau, thaum plasticity thiab toughness yuav txo. Qhov tshwm sim no hu ua "kev ua haujlwm nyuaj." Txawm hais tias kev kho cua sov yuav tsum tau ua tom qab ua haujlwm txias yog nyob ntawm daim ntawv thov: yog tias siv rau hauv cov ntawv thov raug rau cov khoom siv zoo li qub thiab qhov twg cov yas yuav tsum tsis siab, kev kho cua sov tsis tsim nyog tom qab ua haujlwm txias; Yog tias siv rau hauv cov ntawv thov uas xav tau ntau dua plasticity thiab toughness, lossis raug cuam tshuam rau kev thauj khoom, annealing (ntawm 600-700 degree) yuav tsum tau ua haujlwm tom qab txias ua haujlwm kom tshem tawm cov kev ntxhov siab, rov ua kom cov hlau plasticity thiab toughness, thiab tiv thaiv cov yeeb nkab tawg thaum siv.
2. Lo lus nug: Puas yog 10 # steel yeeb nkab haum rau kev tsim khoom uas yuav tsum tau khoov ntau zaus? Vim li cas? Dab tsi yuav tsum tau ceev faj thaum khoov? Teb: 10 # steel yeeb nkab haum rau kev tsim khoom uas yuav tsum tau khoov ntau zaus vim nws cov ntsiab lus tsis tshua muaj carbon, zoo plasticity, thiab tsis kam tawg thaum khoov. Nws tuaj yeem tiv taus cov yas loj deformation thiab tsis tshua muaj kev cuam tshuam rau springback tom qab khoov. Thaum khoov, xyuam xim rau cov hauv qab no: 1. Tswj lub kaum sab xis thiab lub vojvoog. Lub vojvoog dabtsi yog khoov yuav tsum tsis txhob me dhau (feem ntau tsis pub tsawg dua 3 npaug ntawm txoj kab uas hla ntawm cov yeeb nkab steel) kom tsis txhob muaj wrinkles los yog tawg ntawm phab ntsa ntawm cov yeeb nkab; 2. Ua ntej khoov, cov yeeb nkab steel tuaj yeem ua kom sov me ntsis (100{11}}150 degree) txhawm rau txhim kho plasticity thiab txo kev ntxhov siab thaum khoov; 3. Tom qab khoov, kev ntxhov siab-relieving annealing tuaj yeem ua kom tshem tawm cov kev ntxhov siab sab hauv thaum khoov thiab tiv thaiv tom qab deformation ntawm cov yeeb nkab steel.
IV. Daim ntawv thov Scenario
3. Nqe Lus Nug: Dab tsi yog qhov kev thov tseem ceeb rau Q255 steel yeeb nkab? Thov muab piv txwv thiab piav qhia vim li cas nws thiaj haum rau cov xwm txheej no nrog rau nws cov khoom siv tshuab. Teb: Cov kev siv tseem ceeb ntawm Q255 steel kav yog cov khoom siv zoo tib yam uas dais nruab nrab thiab tsis muaj qhov yuav tsum tau ua kom zoo sib xws. Piv txwv thiab yog vim li cas: 1. Lub tsev steel qauv: xws li cov ncej, steel beams, thiab scaffolding uprights nyob rau hauv factories, vim hais tias lawv yield zog thiab tensile lub zog yuav ua tau raws li qhov yuav tsum tau ntawm static load ntawm cov vaj tse, thiab lawv yog pheej yig, ua rau lawv haum rau loj -scale siv; 2. Kev txhawb nqa tshuab: xws li cov cuab yeej siv lub hauv paus kev txhawb nqa thiab cov cuab yeej txhawb nqa, vim tias lawv lub zog tuaj yeem tiv taus qhov hnyav ntawm cov khoom siv, thiab lawv yooj yim rau txheej txheem, tso cai rau kev sib dhos ceev los ntawm kev txiav thiab drilling; 3. Tsawg- cov kav dej xa dej siab: xws li cov kav xa dej thauj cov kais dej, cua, thiab cov pa roj tsis zoo (siab dua lossis sib npaug li 1.6MPa), vim tias lawv cov yas ua tau raws li qhov yuav tsum tau ua rau me ntsis deformation ntawm cov kav dej, thiab lawv kuj pheej yig, ua rau lawv tsim nyog rau qis -siab scenarios.
4. Lo lus nug: Dab tsi yog qhov sib txawv hauv daim ntawv thov scenarios ntawm Q275 thiab Q255 steel kav? Hauv qhov xwm txheej twg yuav tsum siv cov kav hlau Q275 hloov Q255 steel kav? Teb: Qhov tseem ceeb sib txawv hauv daim ntawv thov scenarios ntawm Q255 thiab Q275 steel kav yog nyob rau hauv lawv cov load- bearing peev xwm yuav tsum tau: Q255 steel kav yog siv rau nruab nrab load scenarios, thaum Q275 steel kav yog siv rau hnyav load scenarios. Cov xwm txheej uas Q275 steel kav yuav tsum tau siv es tsis txhob Q255 steel kav yog feem ntau cov xwm txheej uas dais loj static loads, yuav tsum tau muaj zog, thiab tsis tshua muaj plasticity yuav tsum tau. Piv txwv xws li: 1. Cov khoom siv hnyav hnyav thiab kev txhawb nqa: xws li crane bases thiab load-cov kabmob txhawb nqa rau cov cuab yeej siv tshuab loj, uas yuav tsum tau tiv taus qhov hnyav ntawm cov khoom siv. Q255 steel kav tsis muaj zog txaus thiab muaj qhov ua rau deformation . 2. Siab- cov kav xa hluav taws xob txhawb nqa: xws li cov kav dej txhawb nqa rau kev thauj khoom siab - dej siab thiab siab - cov pa roj, uas yuav tsum tau tiv taus lub siab thiab qhov hnyav ntawm cov kav dej. Q275 steel kav muaj zog tiv thaiv deformation. 3. Load- bearing Cheebtsam ntawm cov hlau loj: xws li auxiliary load-cov kabmob ntawm cov choj thiab cov kab teeb tseem ceeb ntawm cov tuam tsev loj, uas yuav tsum muaj lub zog siab los xyuas kom muaj kev ruaj ntseg.
5. Lo lus nug: Dab tsi yog qhov kev thov raug cai rau 10 # steel kav? Piav lawv qhov zoo ua ke nrog lawv cov kev ua tau zoo thiab cov khoom siv kho tshuab. Teb: Cov ntawv thov ntawm 10 # steel kav yog siv rau hauv thaj chaw uas xav tau qis qis, kev ua haujlwm siab, thiab siab tawv. Piv txwv thiab qhov zoo muaj xws li: 1. Nyias- cov thawv ntim thiab cov kav dej: xws li cov chaw ntim roj me me, cov roj hose, thiab cov kav dej hauv tsev, vim lawv cov yas zoo thiab cov khoom siv weldability, lawv tuaj yeem ua rau nyias- cov qauv phab ntsa, uas yog lub teeb yuag thiab tsis tuaj yeem tawm; 2. Tsim cov khoom hauv machining: xws li lub luj tshib, flanges, tees, thiab stamping qhov chaw, vim lawv cov yas zoo, lawv tuaj yeem tiv taus txias bending, txias stamping, thiab lwm yam txheej txheem tsim, thiab tsis tuaj yeem tawg; 3. Cov khoom siv nyob rau hauv qis- qhov kub thiab txias ib puag ncig: xws li kev txhawb nqa rau cov khoom siv tub yees thiab qis - cov kav dej kub, vim tias lawv cov tawv tawv zoo, lawv tsis tuaj yeem ua rau tawg tawg ntawm qhov kub thiab txias thiab tuaj yeem hloov mus rau qhov qis - qhov chaw ua haujlwm kub; 4. Welded structural Cheebtsam: xws li welded thav duab rau me me steel qauv, vim lawv zoo heev vuam kev ua tau zoo, siab weld sib koom ua ke lub zog, thiab yooj yim los ua ke.
