Koj puas tau xav txog dab tsi cov ntaub ntawv siv rau excavator thoob?Hauv kab lus no, peb yuav tham txog cov khoom siv feem ntau siv hauv cov pins, sab, txiav npoo, vaj tse thiab cov hniav ntawm cov thoob excavator.

Excavator Pins

Excavator pins feem ntau yog ua los ntawm AISI 4130 lossis 4140 steel.AISI 4000 series steel yog chrome molybdenum hlau.Chromium txhim kho corrosion kuj thiab hardening, thaum molybdenum kuj txhim kho lub zog thiab hardenability.

Thawj tus lej, 4, sawv cev rau qib ntawm cov hlau thiab nws cov ntsiab lus alloy tseem ceeb (hauv qhov no, chromium thiab molybdenum).Qhov thib ob tus naj npawb 1 sawv cev rau feem pua ​​​​ntawm cov ntsiab lus alloying, uas txhais tau hais tias txog 1% chromium thiab molybdenum (los ntawm huab hwm coj).Ob tus lej kawg yog cov pa roj carbon ntau hauv 0.01% nce ntxiv, yog li AISI 4130 muaj 0.30% carbon thiab AISI 4140 muaj 0.40%.

Cov hlau siv tau tej zaum tau kho nrog induction hardening.Cov txheej txheem kev kho cua sov no ua rau lub ntsej muag tawv tawv nrog kev hnav tsis kam (58 txog 63 Rockwell C) thiab cov khoom siv sab hauv tuaj yeem txhim kho toughness.Nco ntsoov tias bushings feem ntau yog ua los ntawm tib yam khoom raws li tus pins.Qee tus pins pheej yig dua tuaj yeem ua los ntawm AISI 1045. Qhov no yog cov hlau nruab nrab uas tuaj yeem ua kom tawv.

Excavator Bucket Sides thiab Txiav Ntug

Lub thoob sab thiab cov hniav feem ntau yog ua los ntawm AR phaj.Cov chav kawm nrov tshaj plaws yog AR360 thiab AR400.AR 360 yog ib qho nruab nrab carbon tsawg alloy hlau uas tau raug kho cua sov los muab kev hnav zoo heev thiab muaj zog muaj zog.AR 400 kuj tau kho cua sov, tab sis nws muaj kev hnav tsis kam thiab muaj zog tshaj tawm los.Ob leeg steels tau ua tib zoo hardened thiab tempered kom ua tiav cov khoom tseem ceeb ntawm lub thoob.Thov nco ntsoov tias tus lej tom qab AR yog Brinell hardness ntawm hlau.

Excavator Bucket Plhaub

Lub thoob cov vaj tse feem ntau yog tsim los ntawm ASTM A572 Qib 50 (qee zaum sau A-572-50), uas yog A siab zog qis alloy steel.Cov hlau yog alloyed nrog niobium thiab vanadium.Vanadium pab kom cov hlau muaj zog.Qib ntawm cov hlau no yog qhov zoo tagnrho rau cov thoob lub plhaub vim nws muab lub zog zoo thaum hnyav dua li cov hlau sib piv xws li A36.Nws kuj yog ib qho yooj yim rau weld thiab puab.

Excavator Bucket hniav

Txhawm rau sib tham txog dab tsi lub thoob cov hniav yog tsim los ntawm, nws yog ib qho tseem ceeb kom nkag siab tias muaj ob txoj hauv kev ua cov thoob hniav: casting thiab forging.Cov hniav cam khwb cia tuaj yeem ua los ntawm cov hlau tsis tshua muaj hlau nrog npib tsib xee thiab molybdenum ua cov ntsiab lus tseem ceeb alloying.Molybdenum txhim kho cov hardenability thiab lub zog ntawm cov hlau thiab tseem tuaj yeem pab txo qee cov ntaub ntawv pitting corrosion.Nickel txhim kho lub zog, toughness thiab pab tiv thaiv corrosion.Lawv kuj tuaj yeem ua los ntawm isothermal quenched ductile hlau uas tau raug kho cua sov los txhim kho kev hnav tsis kam thiab cuam tshuam lub zog.Forged thoob hniav kuj yog ua los ntawm tshav kub-kho alloy steel, tab sis hom hlau txawv ntawm cov chaw tsim khoom rau cov chaw tsim khoom.Kev kho cua sov txhim kho kev hnav thiab ua kom muaj zog cuam tshuam.

Xaus

Excavator thoob yog ua los ntawm ntau yam khoom sib txawv, tab sis tag nrho cov ntaub ntawv no yog cov hlau lossis hlau.Hom khoom raug xaiv raws li qhov yuav tsum tau ntim thiab tsim khoom.