Khoom Taw Qhia

FGS500-7 poob ciab peev casting ntawm ductile hlau

Mechanical zog ntawm ductile hlau

Cov khoom siv hluav taws xob ntawm cov hlua hlau yog nyob ntawm ob qhov ntsuas: tensile lub zog thiab elongation. Raws li cov txheej txheem tsim khoom ruaj khov, kev lees paub kuj tuaj yeem ua raws li tus nqi hardness. Vim hais tias kev sib raug zoo ntawm hardness thiab lub zog yog tsim nyob rau hauv lub hauv paus ntawm tsim nyog spheroidization, tshuaj muaj pes tsawg leeg, inoculation stability, thiab tsim nyog casting txheej txheem, nyob rau hauv thiaj li yuav xyuas kom meej qhov kev ua tau zoo, nws yog stipulated hais tias cov metallographic qauv yuav tsum tau kuaj thaum txais raws li qhov kev thov. hardness, thiab spheroidization tus nqi yuav tsum tsis txhob tsawg tshaj li 4. Txawm hais tias lub hardness thiab spheroidization yog tsim nyog, lub zog thiab toughness yuav tsis tau raws li qhov yuav tsum tau vim muaj cov cementite, phosphorus eutectic thiab siab silicon tov ntxiv dag zog rau hauv matrix. Yog li ntawd, tsis muaj qhov ruaj khov ntawm cov txheej txheem ntau lawm, nws tsis tuaj yeem lees txais raws li tus nqi hardness.

GB qhia qib hlau hlau

1. Net load kev ua tau zoo

(1) Hardness

Lub hardness ntawm ductile hlau feem ntau yog nyob ntawm cov qauv matrix, thiab muaj kev sib raug zoo nrog tensile lub zog, elongation thiab lwm yam net load zog.

(2) Lub zog thiab plasticity

Lub zog thiab plasticity ntawm nodular cam khwb cia hlau tsuas yog nyob ntawm tus qauv matrix, qis bainite lossis tempered martensite lub zog yog qhov siab tshaj plaws, ua raws li sab sauv bainite, sorbite, pearlite. Nrog rau qhov nce ntawm ferrite, lub zog txo thiab elongation nce. Austenite los yog ferrite muaj qis zog thiab zoo plasticity.

2. Dynamic load kev ua tau zoo

(1) cuam tshuam toughness

Qhov cuam tshuam toughness ntawm ferritic nodular cam khwb cia hlau txawv heev vim qhov kev hloov ntawm silicon cov ntsiab lus thiab bainitic nodular cam khwb cia hlau vim qhov kev hloov ntawm sab sauv, qis bainite thiab austenite kom muaj nuj nqis.

(2) qaug zog

Qee cov hlau nplaum muaj lub zog qaug zog, sib npaug rau 45 normalizing hlau, xws li pearlitic ductile hlau.

Khoov qaug zog lub zog ntawm cov hlau nplaum nrog ntau yam qauv matrix

3. Kev ua haujlwm siab kub

(1) Hardness

Txhua yam ntawm cov hlau ductile muaj zoo hardness ntawm qhov kub thiab txias, tab sis ntawm 540 degree pib granular, siab tshaj 650 degree pib decompose, lub hardness pib poob thiab maj mam ze rau hardness ntawm ferritic ductile hlau.

(2) Kub kub lub sij hawm luv luv mechanical zog

Daim duab qhia tau hais tias lub zog tensile ntawm ductile hlau txo nrog nce kub. Hauv qhov elongation, ferrite thawj zaug txo qis thiab tom qab ntawd nce ntxiv, thiab pearlite maj mam txo qis thiab tom qab ntawd nce ntxiv.

(3) Kev kub siab creep thiab kav ntev zog

(4) qaug zog

4. Tsawg kub ua haujlwm

Nrog rau qhov txo qis ntawm qhov kub thiab txias, cov hlau nplaum maj mam hloov ntawm toughness mus rau brittleness, tshwj xeeb tshaj yog nyob rau hauv qab ntawm brittleness hloov kub, qhov cuam tshuam tus nqi poob sharply. Nyob rau tib lub sijhawm, lub zog tawm los nce, qhov elongation txo qis, thiab rhiab heev rau kev ntxhov siab concentration nce pom tseeb, uas qhia tau hais tias qhov deformation me me tom qab tawm los. Rau ferritic nodular cam khwb cia hlau nrog zoo plasticity ntawm chav tsev kub, lub tensile lub zog nce nyob rau hauv qis kub.

Tsawg kub tensile zog ntawm ferrite thiab pearliteSi: 2.1%; P: 0.09%

Lub cev muaj zog ntawm ductile hlau

1. Ceev ceev

① Qhov kub ib txwm ceev ntawm cov hlau nplaum

② Qhov ceev ntawm molten magnesium ductile hlau

Nco tseg:

(1) C: 3.44%, Si: 2.56%, Mn: 0.22%, P: 0.11%

(2) C:3.3-3.6%, Si:1.6-2.6%, Mn:0.4-0.5%,

2. Linear expansion coefficient

Lub coefficient ntawm linear expansion nce qeeb nrog qhov nce ntawm qhov kub thiab txias, thiab nce ntxiv tom qab 600 degree.

3. Thermal conductivity

Lub thermal conductivity nyob ntawm qhov muaj pes tsawg leeg, qauv, graphite daim ntawv thiab kub. Lub thermal conductivity ntawm graphite zoo dua li cov qauv matrix, thiab cov thermal conductivity ntawm graphite raws lub hauv paus dav hlau zoo dua li ntawm C-axis. Qhov siab dua cov ntsiab lus carbon, qhov zoo dua thermal conductivity; Qhov qis dua tus nqi spheroidization, qhov zoo dua thermal conductivity; Qhov qis dua qhov kub, qhov zoo dua thermal conductivity. Lub thermal conductivity ntawm cov hlau nplaum yog siab dua li cov hlau, tab sis qis dua cov hlau grey.

Zhongwei Precision muaj cov kev pabcuam hauv qab no

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Copper Silica Sol Investment Casting

Peb yog cov chaw tsim khoom ntawm "FGS500-7 Ductile hlau castings", yog tias koj xav tau cov ntaub ntawv ntxiv thov hu rau peb!