low alloy structural raj
Tsawg alloy seamless steel yeeb nkab hais txog cov hlau alloy nrog tag nrho cov ntsiab lus ntawm cov ntsiab lus ntawm tsawg dua 5%. Tsawg alloy steel yog txheeb ze rau carbon steel. Nws yog tsim los ntawm carbon steel kav. Txhawm rau txhim kho cov khoom ntawm cov hlau, ib lossis ob peb lub ntsiab lus alloying yog txhob txwm ntxiv rau cov hlau. Thaum cov alloy ntxiv ntau tshaj li cov ntsiab lus ntawm cov hlau uas ua los ntawm cov txheej txheem ntau lawm, cov hlau hu ua alloy steel.
Thaum tag nrho cov ntsiab lus alloy tsawg dua 5%, nws yog hu ua low alloy steel yeeb nkab. Ordinary alloy steel kav feem ntau tsawg dua 3.5%. Thaum cov ntsiab lus alloy nyob nruab nrab ntawm 5-10%, nws yog hu ua nruab nrab alloy steel yeeb nkab. Thaum cov ntsiab lus alloy ntau dua 10%, nws yog hu ua high alloy steel yeeb nkab.
Qhov taw tes tawm ntawm cov qauv hlau txiav txim siab qhov kev ntxhov siab ntawm cov qauv tuaj yeem tiv taus yam tsis muaj deformation mus tas li. Qhov tsawg kawg nkaus qhov taw tes ntawm cov pa roj carbon zoo steel yeeb nkab yog 235MPa. Qhov tsawg kawg nkaus cov ntsiab lus ntawm ib qho qis-alloy high-strength steel yeeb nkab yog 345MPa.
Tsawg alloy qauv steel kav muaj zoo forgeability thiab hardenability, thiab tuaj yeem ua tiav thiab kho los ntawm cov txheej txheem kho cua sov. Los ntawm forging thiab quenching, lub zog thiab hardness ntawm cov hlau tsis tshua muaj hlau tuaj yeem txhim kho ntxiv, ua rau nws tsim nyog rau kev tsim khoom uas yuav tsum tau muaj zog thiab hnav tsis kam, xws li cav crankshafts, zog, thiab bearings.
Alloy tube khoom:20G (ST45.8-III), 12Cr1MoV, T12, 15CrMo (13CrMo44, STFA22, STPA22, P12), Cr5Mo,30 CrMo, Q345B (16Mn), 27SiMn, 20Cr, 40Cr, 12Cr2Mo, T91, STFA26, 12Cr2MoC, 10CrMo910, A335P22, T22, STFA24.
Tsawg alloy yeeb nkab qhov ntev thiab tso cai sib txawv:
|
Deviation theem |
Standardized txheej txoj kab uas hla tso cai deviation |
|
D1 |
± 1.5%, yam tsawg ± 0.75 hli |
|
D2 |
±1.0%. Yam tsawg kawg nkaus ±0.50 hli |
|
D3 |
± {0}}.75%. Yam tsawg kawg ± 0.30 hli |
|
D4 |
±{{0}}.50%. Yam tsawg kawg nkaus ± 0.10 hli |
qis carbon Alloy steel tube
Tsawg alloy seamless steel kav yog siv dav hauv cov hauv qab no:
1. Petrochemical kev lag luam: siv los tsim cov kav dej, ntim thiab reactors hauv cov khoom siv petrochemical.
2. Hluav taws xob: siv rau hauv kev tsim cov kav dej, flues thiab boilers hauv cov khoom siv hluav taws xob.
3. Kev tsim kho hauv nroog: siv los tsim cov kab teeb, kab thiab phab ntsa hauv kev tsim vaj tsev.
Cim npe nrov: Tuam Tshoj qis alloy steel yeeb nkab manufacturers, lwm tus neeg, Hoobkas
