Iimfuno zoBume beeKhemikhali，%，
C: ≤0.30
Mn: 0.29-1.06
P: ≤0.025
S: ≤0.025
I-Si: ≥0.10
I-Ni: ≤0.40
I-Cr: ≤0.30
I-Cu: ≤0.40
V: ≤0.08
Inombolo yesazisi: ≤0.02
Unyaka: ≤0.12
*Umxholo weManganese unokwandiswa nge-0.05% xa kuncipha umxholo wekhabhoni nge-0.01% ukuya kuthi ga kwi-1.35%.
**Umxholo weNiobium, ngokusekelwe kwisivumelwano, unokwandiswa ukuya kuthi ga kwi-0.05% kuhlalutyo lokunyibilika kunye ne-0.06% kuhlalutyo lwemveliso egqityiweyo.
Iimfuno zonyango lobushushu:
1. Yenza iqondo lobushushu libe ngaphezulu kwe-815°C.
2. Yenza iqondo lobushushu libe ngaphezulu kwe-815°C, uze emva koko ufudumale.
3. Ishushu senziwe phakathi kwama-845 kunye nama-945°C, emva koko sipholiswa kwi-oven engaphezulu kwama-845°C (kwiityhubhu ezingenamthungo kuphela).
4. Ifakwe ngomatshini yaze yaqiniswa ngokwe-Ingongoma 3 engasentla.
5. Iqiniswe yaze yathomalaliswa ngaphezu kwama-815°C.
Iimfuno zokusebenza koomatshini:
Amandla okuvelisa: ≥240Mpa
Amandla okuxinana: ≥415Mpa
Ukwandiswa:
| Isampulu | A333 GR.6 | |
| Ithe nkqo | I-Transverse | |
| Ixabiso eliphantsi lesetyhula esemgangathweniisampuli okanye isampuli encinci enomgama ophawulayo we-4D | 22 | 12 |
| Iisampulu ezizinxantathu ezinobukhulu bodonga obuyi-5/16 intshi (7.94 mm) nangaphezulu, kunye nazo zonke iisampulu ezincinci ezivavanyiweyo kwiicandelo elipheleleyo elinqamlezileyo kwi-2 intshi. (50 mm)iimpawu | 30 | 16.5 |
| Iisampulu ezizinxantathu ukuya kuthi ga kwi-5/16 intshi (7.94 mm) ubukhulu bodonga kumgama wokuphawula we-2 intshi (50 mm) (ububanzi besampulu yi-1/2 intshi, 12.7 mm) | A | A |
A Vumela ukwehla kwe-1.5% kubude obude kunye nokwehla kwe-1.0% kubude obunqamlezileyo kwi-1/32 intshi nganye (0.79 mm) yobukhulu bodonga ukuya kuthi ga kwi-5/16 intshi (7.94 mm) ukusuka kumaxabiso obude adweliswe apha ngasentla.
Uvavanyo lweMpembelelo
Ubushushu boVavanyo: -45°C
Xa kusetyenziswa iisampulu ezincinci zeCharpy impact kwaye ububanzi besampulu bungaphantsi kwe-80% yobukhulu bokwenyani bezinto, kufuneka kusetyenziswe ubushushu obuphantsi bovavanyo lwempact njengoko kubalwe kwiTheyibhile 6 yenkcazo ye-ASTM A333.
| Isampuli, mm | Ubuncinci obuphakathi beesampuli ezintathu | Ixabiso eliphantsi le-one of iisampuli ezintathu |
| 10 × 10 | 18 | 14 |
| 10 × 7.5 | 14 | 11 |
| 10 × 6.67 | 12 | 9 |
| 10 × 5 | 9 | 7 |
| 10 × 3.33 | 7 | 4 |
| 10 × 2.5 | 5 | 4 |
Imibhobho yentsimbi kufuneka ivavanywe ngamanzi okanye ingatshabalalisi (i-eddy current okanye i-ultrasonic) ngokwesiseko sesebe ngalinye.
Ukunyamezela ububanzi bangaphandle bombhobho wentsimbi:
| Ububanzi obungaphandle, mm | ukunyamezelana okuhle, mm | ukunyamezelana okungalunganga, mm |
| 10.3-48.3 | 0.4 | 0.4 |
| 48.3＜D≤114.3 | 0.8 | 0.8 |
| 114.3＜D≤219.10 | 1.6 | 0.8 |
| 219.1＜D≤457.2 | 2.4 | 0.8 |
| 457.2＜D≤660 | 3.2 | 0.8 |
| 660＜D≤864 | 4.0 | 0.8 |
| 864＜D≤1219 | 4.8 | 0.8 |
Ukunyamezela ubukhulu bodonga lombhobho wentsimbi:
Naliphi na inqaku aliyi kuba ngaphantsi kwe-12.5% yobukhulu bodonga obuqhelekileyo. Ukuba ubukhulu bodonga obuncinci buyalelwe, akukho nqaku liya kuba ngaphantsi kobukhulu bodonga obufunekayo.
Ixesha lokuthumela: Februwari-22-2024