O mea faʻainisinia o paʻu e aʻafia i mea mataʻutia ma togafitiga vevela. E masani lava, o mea mataʻutia e sili atu le aʻafiaga i meatotino o faʻamau aua o mea totino o mea faʻapitoa e fuafua ai le tapulaʻa pito i luga o togafitiga vevela.. Faataitaiga, mea mata e aunoa ma le Cr e le mafai ona ausia le malosi tensile a 10.9 fa'amau fa'ailoga.

E masani lava, pe a le maua e tagata faʻatau ni manaʻoga faʻapitoa, matou te fautuaina le fuafuaina o mea mataʻutia mo le gaosiga o paʻu e faʻatatau i le faʻaogaina o le tagata faʻatau. Faataitaiga, i fale faufale, e fautuaina e fa'aoga fa'amau o le vasega 8.8 pe maualuga atu mo fausaga uamea, ma i totonu o pisinisi tau taavale, fa'amau o vasega 10.9 pe sili atu e fautuaina mo fesoʻotaʻiga.

Pe a iai mana'oga fa'apitoa mo le togi fa'amau, e masani ona matou filifilia faʻamau e tusa ai ma le ISO898 tulaga mo metric bolts.

O mea nei e manaʻomia mo le faʻaogaina o mea mata i ISO898:

Meatotino vasegaMeafaitino ma vevela togafitigaKemisi fatuga tapula'aFa'aitaina vevela
(lafo au'ili'iliga, %)a
CPSBe°C
min.maualuga.maualuga.maualuga.maualuga.min.
4.6c oUamea uamea po o uamea uamea ma mea faaopoopo 0,550,0500,060E le o ta'ua—-
4.8o
5.6i0,130,550,0500,060
5.8o0,550,0500,060
6.8o0,150,550,0500,060
8.8fUamea kaponi ma mea faaopoopo (e.g. Boron poʻo Mn poʻo Cr) tineia ma ita0,15u0,400,0250,0250,003425
pe
Ua tineia ma fa'afefeteina le uamea carbon
pe0,250,550,0250,025
u'amea tu'umea tineia ma fa'afefeteina0,200,550,0250,025
9.8fUamea kaponi ma mea faaopoopo (e.g. Boron poʻo Mn poʻo Cr) tineia ma ita0,15u0,400,0250,0250,003425
pe
Ua tineia ma fa'afefeteina le uamea carbon
pe0,250,550,0250,025
u'amea tu'umea tineia ma fa'afefeteina0,200,550,0250,025
10.9fUamea kaponi ma mea faaopoopo (e.g. Boron poʻo Mn poʻo Cr) tineia ma ita0,20u0,550,0250,0250,003425
pe
Ua tineia ma fa'afefeteina le uamea carbon
pe0,250,550,0250,025
u'amea tu'umea tineia ma fa'afefeteina0,200,550,0250,025
12.9f h iu'amea tu'umea tineia ma fa'afefeteina0,300,500,0250,0250,003425
12.9f h iUamea kaponi ma mea faaopoopo (e.g. Boron poʻo Mn poʻo Cr poʻo Molybdenum) tineia ma ita0,280,500,0250,0250,003380
a I le tulaga o feeseeseaiga, e fa'aoga le su'esu'ega o oloa.
e mafai ona o'o i ai mea o le Boron 0,005 %, pe a faʻapea e le aoga le boron e pulea e le faʻaopoopoga o le titanium ma / poʻo le alumini.
i Mo fa'amau fa'amau malulu o vasega meatotino 4.6 ma 5.6, fa'afefeteina o le uaea e fa'aaogaina mo le malulu po'o le malulu
fa'apipi'i lava ia atonu e mana'omia e maua ai le ductility mana'omia.
d O lo'o fa'atagaina le tipiina o uamea mo nei vasega o meatotino ma le maualuga o le sulfur,  phosphorus ma taʻitaʻi o loʻo i totonu:S: 0,34 %; P: 0,11 %; Pb: 0,35 %.
u I le tulaga o le u'amea kaponi u'amea manino ma se kaponi i lalo ifo 0,25 % (iloiloga lafo), e tatau ona i ai le manganese aupito maualalo 0,6 % mo le vasega o meatotino 8.8 ma 0,7 % mo vasega o meatotino 9.8 ma 10.9.
f Mo meafaitino o nei vasega o meatotino,  e tatau ona lava le malosi fa'amalo e fa'amautinoa ai se fausaga e aofia ai
tusa 90 % martensite i le totonugalemu o vaega filo mo faʻamau i le tulaga "pei-faʻamaʻaina" aʻo leʻi faʻafefe. g O lenei u'amea u'amea e tatau ona aofia ai le itiiti ifo ma le tasi o elemene o lo'o taua i lalo i le aofa'i aupito maualalo e tu'uina atu: chromium 0,30 %,  nikeli 0,30 %, molybdenum 0,20 %, vanadium 0,10 %. Pe a fa'amaoti elemene i tu'ufa'atasiga o lua, tolu pe fa ma e itiiti ifo mea o lo'o i totonu nai lo mea o lo'o ta'ua i luga, le tau fa'atapula'a e fa'aaoga mo le fa'avasegaina o vasega uamea o 70 % o le aofa'i o tau fa'atapula'a ta'ito'atasi o lo'o fa'amaoti mai i luga mo le lua, tolu pe fa elemene e aafia ai.
h O mea fa'apipi'i e gaosia mai mea mata fa'a phosphate e tatau ona fa'amama a'o le'i togafitia le vevela; o le leai o se pa'epa'e phosphorus fa'atamaoaigaina e tatau ona iloa i se metotia su'ega talafeagai.
i E fautuaina le fa'aeteete pe a fa'aaogaina le vasega o meatotino 12.9/12.9 ua iloiloina. Le gafatia o le fa'amau gaosimea, e tatau ona mafaufau i tulaga o le tautua ma auala e fa'amalo ai. E mafai e le si'osi'omaga ona fa'aoso fa'ama'i a'a ta'e o fa'amau e pei ona fa'agaioia fa'apea fo'i mea fa'apipi'i.

Afai ei ai se isi fesili e uiga i le gaosiga o paʻu, pls lagona e faʻafesoʻotaʻi i matou.

Sherry Cen

JMET CORP., Jiangsu Sainty International Group

tuatusi: Fale D, 21, Polokalama Avenue, Jiangsu, Saina

Tel. 0086-25-52876434

WhatsApp:+86 17768118580

I-meli [email protected]