Dab tsi yog high-strength square raj?

Cov yam ntxwv ua haujlwm ntawmhigh-strength square tubemuaj lub zog siab, zoo toughness thiab cuam tshuam tsis kam.
Lub zog: yield point (σ s) ≥390mpa;
Tensile zog (b b) ≥635mpa;
elongation δ 5 (%) ≥ 25 ；
Hardness hb ≤ 187hv,
Kev kho cua sov specification: normalizing 850 ° C; Quenching 880 ° C; Kub 600 ° C.
Khoom siv: ua los ntawm high-qualitycarbon steel qauvlos ntawm kub dov los yog txias kos duab.
Kev siv: siv rau kev tsim cov dej-txias phab ntsa yeeb nkab, boiling dej yeeb nkab, locomotive dej tank chav yeeb nkab thiab arch cib yeeb nkab, thiab lwm yam.
Specification thiab tsos zoo:
Txhua batch ntawmcov kav hlauyuav tsum tau soj ntsuam ib tug los ntawm ib tug, thiab saum npoo yuav tsum tsis txhob muaj kab nrib pleb, folds thiab ob daim tawv nqaij tsis xws luag; Ultrasonic flaw detection yuav tsum tau ua rau txhua cov yeeb nkab steel los tshuaj xyuas cov khoom siv ntawm lub vuam. Feem ntau, txoj kab uas hla ntawm txoj kab uas hla ntawm lub vuam yog 0.2-0.25 hli, qhov ntev ntawm qhov txuas ntawm lub voj voog yog 0.75-1 hli, thiab qhov ntev ntawm qhov txuas ntawm lub qhov (socket) yuav tsum tsis pub tsawg dua 0.25 hli.
Tshuaj muaj pes tsawg leeg Cov tshuaj muaj pes tsawg leeg ntawm cov khoom tiav ua raws li cov kev cai ntawm GB 222-84.
Lub cev thiab mechanical zog:
1) Lub zog-strain nkhaus ntawm tensile xeem yuav tsum tiaj tus yam tsis muaj kev hloov sai
2) Impact test Qhov ntsuas kub tsis tshua muaj qhov toughness ntawm tus qauv yog kuaj los ntawm kev ntsuas qhov ntsuas kub ntawm qhov ntsuas kub.
3) Kev tawg tsis raug tso cai rau ntawm cov kav dej flared los ntawm hydraulic lossis pneumatic li
4) Qhov kev ntxhov siab tsis sib xws ntawm kev sim khoov yuav tsum tsis pub tshaj tus nqi teev.
Cov txheej txheem ntws: Tom qab cov hlau sawb tau txiav threaded rau hauv ib daim ntawv nyias nyias thiab ua tsis tu ncua, nws yog leveled los ntawm multi-pass straightener, thiab ces nkag mus rau hauv high-frequency vuam tsev. Ob qhov kawg yog butted los ntawm high-frequency lap welder los tsim ib ncig corrugated vuam. Tom qab vuam, cov yeeb nkab steel yog qhov loj thiab txiav los ntawm qhov loj thiab txiav. Thaum kawg, cov yeeb nkab steel yog quenched thiab tempered los ntawm cov khoom tiav, thiab tom qab ntawd txau nrog primer kom tiav cov txheej txheem ntau lawm.
(6) Cov khoom txheem gbt8163-2008Galvanized Welded Square Tshooj HlauKev xa tawm cov kua dej gbt9711.1-1997 Hydrogen-resistant Alloy Steel Phaj rau Petroleum thiab Natural Gas Kev Lag Luam Ntu 1: Kev Txhim Kho ntawmThick-walled Seamless Steel Tubesgbt3094-1986 Seamless Steel Tubes rau Tsawg-siab thiab Nruab Nrab-siab Boilers gb5310-95 Loj Diameter Vuam Electrodes rau Tsawg-siab Boilers syt5038-2000 (tus qauv miniserial).