Cov Khoom Kawg
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Din2391 St52 Srb Lub tog raj kheej yeeb nkab
DIN2391 ST52 SRB Lub tog raj kheej yeeb nkab yog qhov siab -cov yeeb nkab honed tshwj xeeb tsim los rau kev siv hydraulic lub tog raj kheej, muab cov khoom siv zoo heev, qhov tseeb qhov tseeb, thiab zoo tshaj qhov ua tiav. Ua raws li tus qauv DIN 2391, lub raj no lav kev ua haujlwm zoo ib yam nyob rau hauv siab - cov xwm txheej siab thiab xav tau kev ua haujlwm ib puag ncig.
Hauj lwm lawm
DIN2391 ST52 SRB Lub tog raj kheej yeeb nkab yog qhov siab -cov yeeb nkab honed tshwj xeeb tsim los rau kev siv hydraulic lub tog raj kheej, muab cov khoom siv zoo heev, qhov tseeb qhov tseeb, thiab zoo tshaj qhov ua tiav. Ua raws li tus qauv DIN 2391, lub raj no lav kev ua haujlwm zoo ib yam nyob rau hauv siab - cov xwm txheej siab thiab xav tau kev ua haujlwm ib puag ncig.
Cov khoom siv hauv paus ST52 (tseem hu ua E355) yog ib qho uas tsis yog -alloy structural steel paub txog nws lub zog sib npaug thiab kev tsim. Nws cov tshuaj muaj pes tsawg leeg muaj xws li tswj cov qib ntawm carbon (tsawg dua los yog sib npaug rau 0.22%), silicon (tsawg dua los yog sib npaug rau 0.55%), thiab manganese (tsawg dua los yog sib npaug rau 1.6%), nrog rau txwv phosphorus thiab sulfur (tsawg dua los yog sib npaug rau 0.025% txhua), kom ntseeg tau zoo weldability. Cov yeeb nkab xa mus rau hauv BK + S mob-txias txias thiab txo kev ntxhov siab- uas txhim kho nws cov khoom siv kho tshuab. Qhov no ua rau lub zog tensile yam tsawg kawg nkaus (Rm) ntawm 600 MPa, yield zog (ReH) ntawm 520 MPa, thiab elongation (A5) tsawg kawg yog 14%, muab cov qauv kev ntseeg siab thiab qaug zog.
Lub raj tau dhau los ua SRB (Skived thiab Roller Burnished) kev ua haujlwm, ob - kauj ruam precision machining ua haujlwm uas ua kom muaj qhov tshwj xeeb zoo nkauj sab hauv nrog tus nqi roughness ntawm Ra 0.1-0.4 μm. Qhov no ultra- zoo kawg nkaus txo kev sib txhuam, txo qis hnav ntawm cov ntsaws ruaj ruaj thiab pistons, thiab txhim kho kev ua tau zoo thiab kev pab lub neej ntawm hydraulic systems.
Dimensional conformance yog nruj me ntsis tswj nrog ib tug puab txoj kab uas hla kam rau ua ntawm H8, txheej diameters li ntawm 40 mm mus rau 480 mm, thiab standard lengths mus txog rau 12 meters. Ncaj ncaj yog tswj tsis pub dhau 0.5-1 hli ib 'meter'. Cov raj no tau siv dav hauv hydraulic thooj voos kheej kheej rau kev tsim kho tshuab, cov khoom siv tuav, cov tshuab txhaj tshuaj molding, thiab kev lag luam automation systems uas muaj kev ntseeg siab thiab precision yog qhov tseem ceeb.
Hauv cov ntsiab lus, DIN2391 ST52 SRB lub tog raj kheej yeeb nkab sib txuas cov khoom siv zoo tshaj plaws, cov duab kos duab meej, thiab kev ua tiav saum npoo kom tau raws li cov kev cai nruj ntawm cov ntawv thov hydraulic niaj hnub.
1. Tshuaj muaj pes tsawg leeg
|
Qib hlau |
Tshuaj muaj pes tsawg leeg% |
||||||||
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
V |
AI |
|
|
Tsawg dua los yog sib npaug |
Ntau dua lossis sib npaug |
||||||||
|
C20 |
0.17-0.24 |
0.17-0.37 |
0.15-0.65 |
0.035 |
0.025 |
0.250 |
0.250 |
/ |
/ |
|
CK45 |
0.42-0.5 |
0.17-0.37 |
0.5-0.8 |
0.025 |
0.025 |
0.250 |
0.300 |
/ |
/ |
|
Q355B |
Tsawg dua los yog sib npaug li 0.2 |
Tsawg dua los yog sib npaug li 0.5 |
1.0-1.6 |
0.030 |
0.030 |
0.030 |
0.250 |
0.080 |
0.015 |
|
Q355D |
Tsawg dua los yog sib npaug li 0.2 |
Tsawg dua los yog sib npaug li 0.5 |
1.0-1.6 |
0.030 |
0.025 |
0.250 |
0.250 |
0.150 |
/ |
|
E355 (ST52) |
Tsawg dua lossis sib npaug li 0.22 |
Tsawg dua los yog sib npaug li 0.55 |
Tsawg dua los yog sib npaug rau 1.6 |
0.025 |
0.025 |
0.250 |
0.250 |
/ |
/ |
|
SAE 1026 |
0.22-0.28 |
0.15-0.35 |
0.6-0.9 |
0.040 |
0.050 |
/ |
/ |
/ |
/ |
|
4130 |
0.28-0.33 |
0.15-0.35 |
0.4-0.6 |
0.040 |
0.040 |
0.80-1.10 |
/ |
/ |
/ |
|
4140 |
0.36-0.43 |
0.15-0.35 |
0.705-1.0 |
0.040 |
0.040 |
0.80-1.10 |
/ |
/ |
/ |
2.Mechanical Property:
|
Kev xa khoom |
Txias tiav (nyuaj) (BK) |
Mob khaub thuas thiab ntxhov siab-relieved(BK+S) |
|||
|
Qib hlau |
Rm MPa |
Elongation A5% |
Rm MPa |
ReH Mpa |
Elongation A5% |
|
C20 |
Ntau dua lossis sib npaug li 550 |
Ntau dua lossis sib npaug li 5 |
Ntau dua lossis sib npaug li 520 |
Ntau dua lossis sib npaug rau 375 |
Ntau dua lossis sib npaug li 15 |
|
CK45 |
Ntau dua lossis sib npaug rau 645 |
Ntau dua lossis sib npaug li 5 |
Ntau dua lossis sib npaug li 600 |
Ntau dua lossis sib npaug li 520 |
Ntau tshaj los yog sib npaug rau 10 |
|
Q355B |
Ntau dua lossis sib npaug rau 640 |
Ntau dua lossis sib npaug li 5 |
Ntau dua lossis sib npaug li 600 |
Ntau dua lossis sib npaug li 520 |
Ntau dua lossis sib npaug li 14 |
|
Q355D |
Ntau dua lossis sib npaug rau 640 |
Ntau dua lossis sib npaug li 5 |
Ntau dua lossis sib npaug li 600 |
Ntau dua lossis sib npaug li 520 |
Ntau dua lossis sib npaug li 14 |
|
E355 (ST52) |
Ntau dua lossis sib npaug rau 640 |
Ntau dua lossis sib npaug li 5 |
Ntau dua lossis sib npaug li 600 |
Ntau dua lossis sib npaug li 520 |
Ntau dua lossis sib npaug li 14 |
|
SAE 1026 |
Ntau dua lossis sib npaug rau 640 |
Ntau dua lossis sib npaug li 5 |
Ntau dua lossis sib npaug li 600 |
Ntau dua lossis sib npaug li 520 |
Ntau dua lossis sib npaug li 15 |
3. Kev kam rau siab:
|
Ua siab ntev |
ID kam rau ua |
Tolerance ntawm phab ntsa thickness |
||||
| Loj ntawm ID | H8 | H9 | H10 |
<120mm(O.D) Ntau tshaj lossis sib npaug li 120mm txog 210mm >210 hli |
±5% ±7.5% ±10% |
|
|
30 |
0.033 |
0.052 |
0.084 |
|||
|
>30-50 |
0.039 |
0.062 |
0.1 |
|||
|
>50-80 |
0.046 |
0.074 |
0.12 |
|||
|
>80-120 |
0.054 |
0.087 |
0.14 |
|||
|
>120-180 |
0.063 |
0.1 |
0.16 |
|||
|
>180-250 |
0.072 |
0.115 |
0.185 |
|||
|
>250-315 |
0.081 |
0.13 |
0.21 |
|||
|
>315-400 |
0.089 |
0.14 |
0.23 |
|||
4. Daim ntawv ua tiav
|
Ua daim ntawv |
I. Dmm |
Ntev |
Kev ncaj |
ID kam rau ua |
ID Roughness (RA) |
|
Honed |
40-500 |
Tsawg dua lossis sib npaug li 12M |
0.5-1/1000 |
H8-H9 |
0.4-0.8 hli |
|
SRB |
50-250 |
Tsawg dua lossis sib npaug li 12M |
0.5-1/1000 |
H8 |
0.1-0.4 hli |
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