High-pressure alloy kav yog tsuas yog siv los ua high-zoo carbon structural steel, alloy structural steel thiab stainless kub-resistant steel seamless steel kav rau chav boiler kav dej siab thiab siab dua. Cov kav dej boiler no yog tsim los ua haujlwm nyob rau hauv qhov kub thiab txias. Cov kav dej kuj tseem yuav raug oxidation thiab corrosion nyob rau hauv qhov kev txiav txim ntawm high-temperature flue gas thiab dej vapor. Yog li ntawd, cov kav hlau steel yuav tsum muaj lub zog ruaj khov, siab oxidation tsis kam, thiab kev ruaj ntseg zoo.
Cov pob qij txha ntawm high-pressure alloy kav tom qab welding muaj zoo plasticity thiab cuam tshuam toughness. Thaum lub sij hawm vuam, feem ntau tsis tas yuav preheat, tswj lub interlayer kub thiab tom qab cua sov. Tsis tas yuav siv kev kho cua sov los txhim kho cov qauv tom qab vuam. Tsis tas yuav siv cov txheej txheem tshwj xeeb thaum lub sij hawm tag nrho cov txheej txheem vuam. Weldability zoo heev.
Lub extrudable loj ntau ntawm high-pressure alloy kav nws txawv nyob ntawm seb txoj kev extrusion. Qhov siab tshaj plaws sab nraud ntawm cov yeeb nkab steel hlau extruded los ntawm cov pa perforated koob extrusion txoj kev yog 600 ~ 650mm, qhov tsawg kawg nkaus puab txoj kab uas hla yog 5 ~ 15 hli, thiab qhov tsawg kawg nkaus phab ntsa thickness yog 2 ~ 5 hli.
Cov txheej txheem normalizing tuaj yeem tshem tawm lub network cementite ntawm hypereutectoid hlau. Rau cov hlau hypoeutectoid, normalizing tuaj yeem kho cov siv lead ua lattice thiab txhim kho cov khoom siv zoo ntawm cov kav hlau alloy steel. Nws yog qhov zoo tshaj plaws los siv normalizing es tsis txhob annealing rau cov khoom uas tsis tshua muaj. Kev khwv nyiaj txiag.
