Q1: Dab tsi yuav tsum tau them nyiaj rau thaum vuam Q275 steel yeeb nkab?
Ua ntej vuam Q275 steel yeeb nkab, cov roj av, xeb thiab noo noo yuav tsum tau muab tshem tawm kom tiv thaiv cov hws thiab cov quav tsis sib xws. Nws raug nquahu kom siv J422 lossis J506 Vuam Rods, thiab cov roj av qis-heel yuav tsum tau siv los txo cov kev pheej hmoo ntawm cov kab nrib pleb. Cov vuam tam sim no yuav tsum tau tswj hwm nyob rau hauv ib qeb me (xws li 110 ~ 130a rau 3.2mm vuam pas nrig) kom tsis txhob muaj cov nplej ntau thiab coarsearse. Rau cov kav hlau tuab-walled, preheat rau 100℃~ 150 degree, thiab maj mam txias tom qab vuam kev ntxhov siab.
Q2: Yuav Q275 Pipes Steel yog qhov txias?
Q275 steel pipes can be cold-bent, but the bending radius should not be too small (recommended ≥2 times the pipe diameter), otherwise cracking or wrinkling is likely to occur. Annealing is required before cold bending to eliminate internal stress, especially for thick-walled pipes (wall thickness >10 hli). Kev ua tom qab ua tiav, ntxhov siab nyem cov kev pom zoo kom pom zoo (600℃~ 650℃rau 1 teev). Piv nrog cov roj hlau qis, Q275 tau ua kom muaj qhov muaj peev xwm me ntsis thiab xav tau kom zoo dua tswj xyuas.
Q3: Cov kev txiav ua tau zoo ntawm Q275 cov yeeb nkab Steel?
Qhov kev txiav kev ua tau ntawm Q275 steel yeeb nkab yog nruab nrab, thiab carbide cov cuab yeej (xws li yg8) yuav tsum tau xaiv thiab ntse npoo yuav tsum tau tswj hwm. Qhov kev txiav ceev pom zoo kom ua 60 ~ 100m / min, tus nqi pub yog 0.1 ~ 0. 0.3mm / r, thiab emulsion txias yog siv los txo cov khoom hnav. Nws cov kev txiav kev tiv thaiv yog kwv yees li 15% siab dua li ntawm Q235, tab sis qis dua li cov pa roj carbon hlau siab. Cov chips nruam yog yooj yim tsim thaum ua, thiab chip breaker tsim.
Q4: Cov txheej txheem kho cua sov li cas rau Q275 steel yeeb nkab?
Q275 Cov yeeb nkab steel tuaj yeem ua kom zoo nkauj los ntawm normalizing (900℃~ 950℃cua txias) txhawm rau txhim kho cov khoom siv tshuab ua kom zoo dua qub. Annealing (qeeb cua txias ntawm 680℃~ 720 degree) yog siv los tshem tawm cov kev ntxhov siab txias, thiab quenking + tuaj yeem txhim kho lub zog tab sis txo cov xim huv. Seas carburizing tuaj yeem txhim kho cov coj tsis kam, tab sis tus nqi yog siab. Hardness thiab kastalographic qauv yuav tsum tau kuaj tom qab kev kho cua sov kom ntseeg tau tias zoo.
Q5: Dab tsi yog cov kev sib txuas ntawm Q275 steel yeeb nkab nrog lwm cov ntaub ntawv?
Q275 steel yeeb nkab tuaj yeem txuas nrog cov ntaub ntawv tsis sib xws xws li cam khwb cia hlau thiab tooj liab alloy los ntawm xov txuas, flange kev twb kev sib txuas lossis clamp. Sealant (xws li polytetrospaethorauruoroethylene daim kab xev) yuav tsum tau siv rau cov xov txuas ntxiv, thiab cov roj hmab gasket yuav tsum tau siv rau flange kev txuas rau kev tiv thaiv. Cov gaskets yuav tsum muaj rau kev sib txuas nrog txhuas kom tsis txhob muaj tshuab hluav taws xob. Kev hloov txheej vuam (xws li npib tsib xee-raws vuam pas nrig) yuav tsum tau siv thaum vuam cov ntaub ntawv cuav.
