1. Qhov ntev thiab lawv qhov sib txawv uas tso cai
Sab dav thiab sab thickness pub sib txawv
| Qauv | Tso cai sib txawv | |
| Ntug dav b | Ntug thickness d | |
| 2-5.6 | ±0.8 | ±0.4 |
| 6.3-9 | ±1.2 | ±0.6 |
| 10-14 | ±1.8 | ±0.7 |
| 16-20 | ±2.5 | ±1.0 |
Ntev raws li lub rooj
| Qauv | Ntev (m) |
| 2-9 | 4-12 |
| 10-14 | 4-19 |
| 16-20 | 6-19 |
2. Kev tshwm sim
(1) Curvature
Lub curvature ntawm lub kaum sab xis steel yuav tsum tsis pub tshaj 4 hli ib 'meter'. Tag nrho cov curvature ntawm cov qauv saum toj no 5 yuav tsum tsis txhob ntau tshaj 0.4% ntawm tag nrho qhov ntev. Lub kaum sab xis steel nrog tag nrho curvature tsis ntau tshaj 0.2% ntawm tag nrho qhov ntev tuaj yeem muab los ntawm kev pom zoo ntawm ob tog.
(2) Torsion
Nws yuav tsis muaj qhov pom tseeb torsion.
3. Zoo thiab tso cai sib txawv
(1) Kev xa khoom raws li qhov hnyav theoretical lossis qhov hnyav tiag tiag.
(2) Thaum xam qhov hnyav theoretical, qhov ceev ntawm cov hlau yog 7.85g / cm3.
(3) Raws li kev pom zoo ntawm ob tog, qhov tso cai sib txawv ntawm qhov hnyav ib meter yuav tsum tsis pub tshaj 3%-5%
4. Kev tshuaj xyuas txoj kev
(1) Dimension soj ntsuam txoj kev
ib. Tshawb xyuas qhov bluntness ntawm cov ces kaum sab nrauv thiab sab saum toj ntawm sab kawg nrog ib qho qauv thiab ib puag ncig pas nrig. Thaum ntsuas, tus pas nrig puag ncig nrog ib txoj kab uas hla ntawm 0.18d yuav tsum tsis txhob hla qhov blunted.
b. Xyuas qhov ntev nrog ib tug kav los yog ib daim kab xev ntsuas.
(2) Kev tshuaj xyuas txoj haujlwm
Lub kaum sab xis sab saum toj yuav tsum tau tshuaj xyuas ntawm qhov deb ntawm tsis pub tsawg tshaj 750mm los ntawm qhov kawg.
