Rau 20 # steel tubes nrog phab ntsa thicknesses txog li 87 hli, kev ncaj ncees sab hauv yog qhov tseem ceeb heev, vim tias txawm tias qhov tawg me tshaj plaws thiab cov khoom tsis huv tuaj yeem ua rau lawv cov qauv kev ncaj ncees thiab kev ua tau zoo, thiab kev kuaj ultrasonic tuaj yeem txheeb xyuas cov teeb meem no tau zoo.
Kev kuaj ultrasonic, tseem hu ua UT, yog ib txoj kev kuaj uas tsis ua rau puas tsuaj uas siv cov khoom ntawm kev xav, kev tawg, thiab kev txo qis ntawm cov nthwv dej ultrasonic thaum lawv kis mus rau hauv cov khoom siv los nrhiav cov qhov tsis zoo hauv cov khoom siv.
Thaum lub ultrasonic nthwv dej ntsib qhov tsis zoo hauv cov khoom siv xws li cov kab nrib pleb, cov khoom suav nrog lossis qhov, cov nthwv dej cuam tshuam yuav tsim tawm, thiab qhov chaw, cov duab thiab qhov loj ntawm cov qhov tsis zoo tuaj yeem txiav txim siab los ntawm kev txais cov nthwv dej cuam tshuam no.
Los ntawm kev tshuaj xyuas zoo, nws ua kom ntseeg tau tias cov yeeb nkab hlau tag nrho tsis muaj qhov tsis zoo thiab ua raws li cov qauv thiab cov neeg siv khoom xav tau.
Botop yog ib lub tuam txhab tsim khoom thiab muag khoom ntawm Welded Steel Pipe thiab Seamless Steel Pipe hauv Suav teb, muab cov khoom siv steel pipe rau koj nrog kev zoo thiab tus nqi sib tw. Peb cog lus tias yuav txhawb nqa lub koom haum tshuaj xyuas sab nraud rau txhua yam khoom uas peb muag, thiab peb yuav npaj cov neeg tshuaj xyuas los tshuaj xyuas cov steel pipe dua thaum txhua pawg ntawm cov steel pipe raug xa tuaj kom ntseeg tau tias cov steel pipe zoo dua.
GB/T 8162 yog tus qauv qhia tshwj xeeb uas tau muab los ntawm Tuam Tshoj raucov kav hlau tsis muaj seamlessrau cov hom phiaj ntawm kev tsim kho. 20 # yog qib carbon steel uas muaj cov khoom siv kho tshuab thiab kev ua haujlwm zoo, siv dav hauv kev tsim kho thiab cov qauv kho tshuab.
GB/T 8162 Qib 20 cov tshuaj lom neeg muaj pes tsawg leeg thiab cov khoom siv kho tshuab yuav tsum muaj raws li nram no:
GB/T 8162 Qib 20 Cov Tshuaj Lom Zem:
| Qib hlau | Cov tshuaj lom neeg muaj pes tsawg leeg, hauv% los ntawm pawg | |||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | |
| 20 | 0.17 - 0.23 | 0.17 - 0.37 | 0.35 - 0.65 | 0.035 siab tshaj | 0.035 siab tshaj | 0.25 siab tshaj | 0.30 siab tshaj | 0.25 siab tshaj |
GB/T 8162 Qib 20 Cov Khoom Siv Kho Tshuab:
| Qib hlau | Lub zog tensile Rm MPa | Lub zog ua kom muaj zog ReL MPa | Kev ncab A % | ||
| Nominal Txoj kab uas hla S | |||||
| ≤16 hli | > 16 hli ≤ 30 hli | > 30 hli | |||
| 20 | ≥410 | 245 | 235 | 225 | 20 |
Lub sijhawm tshaj tawm: Lub Kaum Hli-15-2024