ASTM A1045 Steel Yeeb Nkabyog feem ntau siv rau cov khoom ntawm seamless steel yeeb nkab.Seamless steel yeeb nkab tau muab faib ua GB8162 thiab GB8163, uas yog ob qho qauv siv hauv Suav teb.Txawm li cas los xij, ASTM A1045Cov yeeb nkab steeltsuas muaj GB8162, uas yog cov khoom siv feem ntau siv rau machining.
ASTM A1045 steel yeeb nkab yog cov feem ntau siv nruab nrab carbon quenched thiab tempered steel yeeb nkab nrog cov khoom siv zoo, tsis tshua muaj zog thiab yooj yim tawg thaum lub sij hawm dej quenching.Cov me me yuav tsum tau quenched thiab tempered, thiab loj qhov chaw yuav tsum normalized, feem ntau yog siv los tsim lub zog siab txav qhov chaw, xws li turbine impeller thiab compressor piston.Ncej, iav, khib, worm, thiab lwm yam.
ASTM 1045 carbon steel yeeb nkabmuaj li ntawm 0.45% carbon, ib tug me me ntawm manganese, silicon, thiab lwm yam, thiab ib tug tsawg sulfur thiab phosphorus ntsiab lus ntawm high-zoo carbon structural steel yeeb nkab.
Thaum tshav kub kub kev kho mob: normalizing 850, quenching 840, tempering 600. ASTM1045 steel yog ib tug high-zoo carbon structural steel nrog tsawg hardness thiab yog ib qho yooj yim mus txiav.Cov pwm feem ntau yog siv los ua cov qauv, pins, coj ncej, thiab lwm yam, tab sis nws yuav tsum tau kho kom sov.1. ASTM1045 steel yog tsim nyog yog tias nws hardness ntau dua HRC55 (txog HRC62) tom qab quenching thiab ua ntej tempering.Qhov siab tshaj plaws hardness hauv daim ntawv thov yog HRC55 (high-frequency quenching HRC58).2. Cov txheej txheem kev kho cua sov ntawm carburizing thiab quenching yuav tsum tsis txhob siv rau ASTM1045 steel.Cov quenched thiab tempered qhov chaw muaj cov khoom zoo txhua yam thiab tau dav siv nyob rau hauv ntau yam tseem ceeb ntawm cov qauv, tshwj xeeb tshaj yog cov txuas rods, bolts, gears thiab shafts ua hauj lwm nyob rau hauv alternating loads.Txawm li cas los xij, qhov hardness ntawm qhov chaw yog tsawg thiab nws tsis hnav-resistant.Lub hardness ntawm qhov chaw tuaj yeem txhim kho los ntawm quenching thiab tempering + deg quenching.Carburizing kev kho mob feem ntau yog siv rau hnyav load qhov chaw nrog deg abrasion tsis kam thiab core impact resistance, thiab nws abrasion kuj yog siab dua li ntawm quenching thiab tempering + deg quenching.Nws cov ntsiab lus carbon saum npoo yog 0.8-1.2%, thiab nws cov tub ntxhais feem ntau yog 0.1-0.25% (0.35% tshwj xeeb).Tom qab kev kho cua sov, qhov saum npoo tuaj yeem tau txais kev ua haujlwm siab heev (HRC58-62), thiab cov tub ntxhais muaj qhov nyuaj thiab cuam tshuam tsis zoo.Yog tias ASTM1045 steel siv rau carburizing, nyuaj thiab nkig martensite yuav tshwm sim hauv cov tub ntxhais tom qab quenching, poob qhov zoo ntawm kev kho carburizing.Tam sim no, cov ntsiab lus carbon ntawm cov ntaub ntawv siv cov txheej txheem carburizing tsis siab, thiab lub zog tseem ceeb tuaj yeem ncav cuag siab heev los ntawm 0.30%, uas yog qhov tsawg heev hauv daim ntawv thov.0.35% yeej tsis tau pom ib qho piv txwv, thiab tsuas yog qhia lawv hauv phau ntawv.Cov txheej txheem ntawm quenching thiab tempering + high-frequency nto quenching yuav siv tau, thiab hnav tsis kam yog me ntsis phem dua li ntawm carburizing.Txoj kev kho cua sov pom zoo rau 45 steel teev hauv GB / T699-1999 tus qauv yog 850 ℃ normalizing, 840 ℃ quenching thiab 600 ℃ tempering.Cov khoom ua tiav yog tias lub zog tawm los yog ≥ 355MPa.Lub zog tensile ntawm 45 steel teev nyob rau hauv GB / T699-1999 tus qauv yog 600MPa, lub zog tawm los yog 355MPa, qhov elongation yog 16%, qhov txo ntawm thaj tsam yog 40%, thiab lub zog cuam tshuam yog 39J.
Post lub sij hawm: Sep-24-2022