Iyo mechanical properties yemabhoti inokonzerwa neyakasvibirira uye kupisa kurapwa. Kazhinji, izvo zvakasvibirira zvine simba rakakura pane zvimiro zvemabhaudhi nekuti zvimisikidzo zvezvakagadzirwa zvinotarisa muganho wepamusoro wekupisa kupisa.. Semuyenzaniso, mbishi zvinhu zvisina Cr hazvigone kuwana simba rekusimba re 10.9 giredhi bhaudhi.

Kazhinji, apo vatengi vasina chaizvo zvinodiwa, isu tinokurudzira kuona izvo mbishi zvekugadzira mabhoti zvichienderana nekushandiswa kwemutengi mamiriro. Semuyenzaniso, muindasitiri yekuvaka, zvinokurudzirwa kushandisa mabhoti egiredhi 8.8 kana yakakwirira kune zvivakwa zvesimbi, uye muindasitiri yemotokari, mabhaudhi egiredhi 10.9 kana kupfuura zvinokurudzirwa kuti zvibatanidzwe.

Kana vatengi vaine zvinodiwa chaizvo zvegiredhi rebhaudhi, isu tinowanzo sarudza mabhaudhi zvinoenderana neiyo ISO898 yakajairwa yemametric bolts.

Izvi zvinotevera zvinodikanwa zvebhaudhi mbishi zvinhu mu ISO898:

Property classMaterial uye kupisa kurapwaChemical composition limitTempering tembiricha
(cast kuongorora, %)a
CPSBb°C
min.max.max.max.max.min.
4.6c dCarbon simbi kana kabhoni simbi ine additives 0,550,0500,060Hazvina kutaurwa—-
4.8d-
5.6c0,130,550,0500,060
5.8d-0,550,0500,060
6.8d0,150,550,0500,060
8.8fCarbon simbi ine additives (e.g. Boron kana Mn kana Cr) akadzikama uye ane hasha0,15e0,400,0250,0250,003425
kana
Simbi yekabhoni yakadzimwa uye yakapfava
kana0,250,550,0250,025
Alloy simbi yakadzimwa uye yakadzikama0,200,550,0250,025
9.8fCarbon simbi ine additives (e.g. Boron kana Mn kana Cr) akadzikama uye ane hasha0,15e0,400,0250,0250,003425
kana
Simbi yekabhoni yakadzimwa uye yakapfava
kana0,250,550,0250,025
Alloy simbi yakadzimwa uye yakadzikama0,200,550,0250,025
10.9fCarbon simbi ine additives (e.g. Boron kana Mn kana Cr) akadzikama uye ane hasha0,20e0,550,0250,0250,003425
kana
Simbi yekabhoni yakadzimwa uye yakapfava
kana0,250,550,0250,025
Alloy simbi yakadzimwa uye yakadzikama0,200,550,0250,025
12.9f h iAlloy simbi yakadzimwa uye yakadzikama0,300,500,0250,0250,003425
12.9f h iCarbon simbi ine additives (e.g. Boron kana Mn kana Cr kana Molybdenum) akadzikama uye ane hasha0,280,500,0250,0250,003380
a Kana pane kukakavara, kuongororwa kwechigadzirwa kunoshanda.
b Boron yemukati inogona kusvika 0,005 %, kana boron isingashande inodzorwa nekuwedzera kwetitanium uye/kana aluminium.
c Kwezvibatiso zvinotonhora zvemakirasi emidziyo 4.6 uye 5.6, kupisa kupisa kwewaya inoshandiswa pakugadzira inotonhora kana yechando yakagadzirwa
fastener pachayo inogona kudikanwa kuti uwane inodiwa ductility.
d Simbi yemahara yekucheka inotenderwa kune aya makirasi ezvivakwa ane inotevera yakanyanya sarufa,  phosphorus uye lead zviri mukati:S: 0,34 %; P: 0,11 %; Pb: 0,35 %.
e Kana iri plain carbon boron steel ine carbon content pazasi 0,25 % (cast analysis), iyo shoma manganese yemukati ichave 0,6 % yekirasi yemidziyo 8.8 uye 0,7 % zvemakirasi emidziyo 9.8 uye 10.9.
f Zvezvishandiso zvemakirasi ezvivakwa izvi,  pachava nekukwanisa kuoma kwakakwana kuti kuve nechokwadi chechimiro chinosanganisira
anenge 90 % martensite mupakati pezvikamu zvakasungirirwa zvezvigadziro mu "se-zvakaoma" mamiriro asati apisa. g Iyi simbi yealloy ichave neinenge imwe yezvinhu zvinotevera muhuwandu hudiki hwakapihwa: chromium 0,30 %,  nickel 0,30 %, molybdenum 0,20 %, vanadium 0,10 %. Apo zvinhu zvinotsanangurwa mumisanganiswa yezviviri, matatu kana mana uye ane alloy zviri mukati zvishoma pane zvapihwa pamusoro, muganhu kukosha kushandiswa nokuda simbi kirasi kutsunga ndiko 70 % yehuwandu hwehuwandu hwehuwandu hunogumira hwataurwa pamusoro apa kune maviri, zvinhu zvitatu kana zvina zvine chekuita nazvo.
h Zvisungo zvinogadzirwa kubva kune phosphated mbishi zvinhu zvinofanirwa kubviswa pamberi pekupisa kupisa; kusavapo kwechena phosphorus yakafumiswa layer inozoonekwa nenzira yakakodzera yekuyedza.
i Chenjero inorairwa kana kushandiswa kwemidziyo kirasi 12.9/12.9 inofungidzirwa. Kugona kwe fastener mugadziri, mamiriro ebasa uye nzira dzekupwanya dzinofanira kutariswa. Mamiriro ezvinhu anogona kukonzera kushushikana kuora kwekuputika kwemafasteners sekugadziriswa pamwe neaya akaputirwa.

Kana iwe uine mumwe mubvunzo nezve kugadzirwa kwemabhoti, pls inzwa kuti utaure nesu.

Sherry Cen

JMET CORP., Jiangsu Sainty International Group

Kero: Kuvaka D, 21, Software Avenue, Jiangsu, China

Tel. 0086-25-52876434

WhatsApp:+86 17768118580

E-mail [email protected]