1. Core Mechanism: Vim li cas Thickness Impacts Laser Txiav ceev
Kev Xav Tau Zog: Cov phaj tuab xav tau ntau lub zog laser kom nkag mus rau tag nrho qhov tob ntawm cov hlau. Lub thickness ntau dua ua rau qhov kev ncua deb ntawm lub laser beam yuav tsum tau mus los ntawm cov khoom, ua rau kom muaj zog ntau dua los ntawm tshav kub conduction rau cov hlau nyob ib puag ncig.
Thaum tshav kub kub Dissipation: Thicker weathering steel daim hlau muaj ntau dua thermal mass, txhais tau tias lawv nqus thiab dissipate tshav kub sai dua nyias daim hlau. Txhawm rau kom them nyiaj, lub laser yuav tsum nyob ntev dua ntawm txhua qhov taw tes (slower ceev) kom muaj cua sov txaus los yaj tag nrho cov tuab.
2. Laser txiav ceev siv rau huab cua hlau daim hlau ntawm txawv Thicknesses
| Weathering Steel Phaj Thickness | Pom zoo Laser txiav ceev | Key Edge Quality Note |
|---|---|---|
| 1-3 hli (txias- dov nyias daim hlau) | 8-15m / min | Txiav ceev; du, burr{0}}dawb npoo (zoo tagnrho rau cov paib zoo nkauj / vaj huam sib luag) |
| 4–10 mm (kub- dov nruab nrab daim hlau) | 2-6 m / min | Nruab nrab ceev; me burrs yuav tsim nyob rau hauv qab ntug (yooj yim tshem tawm los ntawm txhuam) |
| 11–20 mm (kub- dov tuab daim hlau) | 0.5-2 m / min | qeeb ceev; yuav tsum muaj zog laser ntau dua (≥8000W) kom tsis txhob muaj kev nkag mus tsis tiav |
| >20mm (hnyav daim hlau) | 0.1-0.5m / min | Txiav qeeb heev; nitrogen- pab txiav yog pom zoo kom txo oxidation thiab txhim kho ntug zoo |
3. Lwm yam tseem ceeb uas cuam tshuam nrog Thickness cuam tshuam rau kev ceev
Laser zog: Lub zog siab dua (piv txwv li, 12000W vs. 6000W) tso cai rau kev txiav cov phaj tuab sai dua- rau 20 hli phaj, 12000W lub zog tuaj yeem ua kom nrawm li ~ 50% piv rau 6000W.
Pab Gas Hom:
Oxygen: Accelerates txiav ceev rau daim hlau tuab (txog 20 hli) los ntawm kev ua rau cov tshuaj tiv thaiv exothermic oxidation, uas pab lub zog laser. Txawm li cas los xij, nws tawm nyias oxide txheej ntawm ntug.
Nitrogen: Siv rau kev huv, oxide- cov npoo dawb tab sis yuav tsum tau qeeb qeeb (txo li ~ 30% vs. oxygen) vim tsis muaj cov tshuaj tiv thaiv exothermic.
Weathering Steel Qib: High- qib zog (piv txwv li, Q550NH) muaj qhov hardness me ntsis dua li cov qauv qib (piv txwv li, SPA-H), yuav tsum tau txo qis 5-10% ntawm kev txiav ceev rau tib lub thickness los xyuas kom meej ntug zoo.
4. Cov kev cuam tshuam rau kev ua
Raunyias txias-rolled weathering steel daim hlau (1–3 mm)(siv rau cov paib zoo nkauj, qhov rooj vaj huam sib luag): Laser txiav yog qhov ua tau zoo, thiab kev kub ceev tuaj yeem siv los ua kom cov khoom siv ntau tshaj plaws.
Rautuab kub- dov daim hlau (10–20 mm)(siv rau kev thauj khoom-cov kabmob cov kabmob): Npaj lub sijhawm ua haujlwm ntev dua, thiab xaiv lub zog laser ntau dua yog tias yuav tsum tau ua cov khoom lag luam kom tsis txhob ncua sijhawm.
Rau daim hlau>20 mm: Laser txiav yog ua tau tab sis tus nqi qis dua -zoo tshaj li plasma txiav; xav txog kev txiav plasma rau cov khoom loj kom sib npaug ceev thiab tus nqi.
