Kuongorora Zvakajairwa Zvishandiso zveFasteners
Zvizhinji zvefastener zvinhu isimbi. Semunhu anoshanda muindasitiri yekumhanyisa, zvinodikanwa kuti unzwisise shanduko, misiyano uye mashandisiro. Kunzwisisa mhando dzakasiyana dzezvishandiso zvinoshandiswa kune fasteners kwakakosha pakusarudza iyo chaiyo kune chaiyo application. Heino mhedziso yezvakajairwa fastener zvinhu, maumbirwo azvo, uye akajairika maapplication:
Ⅰ. Carbon Steel
Composition: Carbon simbi ine simbi ine kashoma kabhoni (kazhinji isingasviki 1.7%) uye dzimwe nguva zvimwe zvinhu zvakaita semanganese, silicon, kana sarufa.
MaGrades: Yakaderera-kabhoni (yakapfava) simbi, yepakati-kabhoni simbi, yakakwirira-kabhoni simbi.
♦Yakaderera kabhoni simbi, inozivikanwawo sesimbi yakapfava, ine kabhoni inotangira pa0.10% kusvika 0.30%. Yakaderera kabhoni simbi iri nyore kugashira kwakasiyana siyana kugadziridzwa senge kuforoma, welding nekucheka, uye inowanzoshandiswa kugadzira cheni, rivets, mabhaudhi, shafts, etc. Inosanganisira yakawanda yakajairika carbon structural steels uye mamwe emhando yepamusoro kabhoni structural steels. Mazhinji acho anoshandiswa einjiniya zvimiro zvikamu pasina kupisa kupisa, uye mamwe anoshandiswa kune ma mechanika zvikamu zvinoda kupfeka kuramba mushure mecarbonization uye kumwe kupisa kwekupisa.
♦Medium kabhoni simbi isimbi kabhoni ine kabhoni ine 0.25% kusvika 0.60%. Mukuwedzera kune kabhoni, inogonawo kuva nehuwandu hwemanganese (0.70% kusvika 1.20%). Zvinoenderana nemhando yechigadzirwa, yakakamurwa kuita yakajairwa kabhoni structural simbi uye yepamusoro-mhando kabhoni structural simbi. Iyo ine yakanaka inopisa kushanda uye yekucheka kuita, asi yakashata welding performance. Kusimba uye kuoma kwakakwira kupfuura izvo zvepasi kabhoni simbi, nepo plastiki uye kuomarara kwakadzikira pane iyo yakaderera kabhoni simbi. Medium kabhoni simbi ine yakanaka yakazara mechanical zvivakwa mushure mekudzima uye kupisa. Naizvozvo, mukushandiswa kwakasiyana-siyana nepakati simba mazinga, yepakati kabhoni simbi ndiyo inonyanya kushandiswa. Pamusoro pekushandiswa sechinhu chekuvaka, inoshandiswawo zvakanyanya mukugadzirwa kwezvikamu zvakasiyana-siyana zvemagetsi.
♦High carbon steel, inowanzonzi tool steel, ine carbon content inotangira pa 0.60% kusvika 1.70% uye inogona kuomeswa nekudzikamiswa.
Main Mashandisirwo & Zvishandiso: Inowanzo shandiswa kune general-chinangwa fasteners sengemabhaudhi, nzungu,screws, uye studs. Vanopa simba rakanaka uye vanobhadhara mari. Mishonga yepasi senge zinc plating inogona kuiswa kuvandudza corrosion resistance.
Ⅱ. Simbi isina ngura
Composition: Alloy yesimbi, chromium (Chromium yemukati 12% kusvika 30%), uye zvimwe zvinhu zvakaita senickel, molybdenum, uye nitrogen. Iyo chromium yemukati inopa yakanakisa corrosion kuramba.
Chromium ndicho chinhu chakakosha chinoita kuti simbi isina simbi isingadziviriri. Kana iyo chromium iri musimbi inosvika 1.2%, chromium inosangana neokisijeni munzvimbo inoora kuita firimu rakatetepa reoxide (self-passivation film) pamusoro pesimbi, iyo inogona kudzivirira kumwe kukoromora kwesimbi matrix. Kuwedzera kune chromium, inowanzoshandiswa alloying zvinhu zvinosanganisira nickel, molybdenum, titanium, niobium, mhangura, nitrogen, etc. kuzadzisa zvinodiwa Stainless simbi sangano uye kushanda kwekushandisa kwakasiyana.
Types: Austenitic (semuenzaniso, 201, 304, 316), Martensitic (semuenzaniso, 410, 420), Ferritic (semuenzaniso, 430,446).
Main Mashandisirwo & Zvishandiso: Inoshandiswa munzvimbo dzakakosha kudzivirira ngura, senge marine, makemikari, uye maindasitiri ekugadzira chikafu. Uyewo yakakodzera kushandiswa kwepamusoro-kupisa.
Simbi isina tsvina haizokonzeresa ngura, gomba, ngura kana kupera. Simbi isina tsvina zvakare chimwe chezvinhu zvakasimba pakati pezvinhu zvesimbi zvinoshandiswa mukuvaka. Nekuti simbi isina tsvina ine yakanaka corrosion kuramba, inogona kuchengetedza kutendeseka kweinjiniya dhizaini yezvikamu zvezvimiro zvachose. Chromium-ine Stainless simbi zvakare inosanganisa simba remuchina uye kureba kwepamusoro, zvichiita kuti zvive nyore kugadzira nekugadzira zvinhu.
Ⅲ. Alloy Steel
Composition: Iine chikamu chepamusoro chezvikamu zvealloying (semuenzaniso, chromium, nickel, molybdenum, vanadium) zvichienzaniswa nekabhoni simbi, inovandudza zvinhu zvakaita sesimba, kuoma, uye kusimba.
Kana iyo chromium yemukati mualloy simbi inosvika 12%, dense chromium oxide ichaita pamusoro pesimbi, zvichikonzera kushanduka kamwe kamwe mukupokana kwesimbi mune oxidizing media uye nekuivandudza zvakanyanya. Zvinhu zvakaita sechromium, aruminiyamu, uye silicon zvinogona kuvandudza kupikisa kweoxidation uye kushorwa kwesimbi kusvika kumagasi ekupisa kwepamusoro, asi aruminiyamu yakawandisa nesilicon zvinokanganisa thermoplasticity yesimbi. Nickel inonyanya kushandiswa kuumba uye kudzikamisa austenite chimiro, kuitira kuti simbi iwane yakanaka mechanical zvivakwa, corrosion resistance uye process performance. Molybdenum inogona kukurumidza kupinza simbi isina asidi-inodzivirira uye kunatsiridza kusaora kwayo kune zvinogadziriswa zvine chloride ion uye mamwe asiri oxidizing media.
MaGrades: Zvinoenderana nezviri mukati meiyo alloy element, yakakamurwa kuita yakaderera alloy simbi (zviri mukati 10%).
Main Mashandisirwo & Zvishandiso: Inoshandiswa mune yakakwirira-simba fasteners yemotokari, aerospace, uye inorema muchina, uko kwakakura kusimba simba uye kupfeka kuramba kunodiwa.
Ⅳ. Mhangura
Composition: Mhangura yakachena kana alloys ane zvidiki zvedzimwe simbi serata (bronze) kana zinc (brass).
Mhangura, simbi ine ruvara rwepepuru-tsvuku inopenya, ine density ye8.92 g/cm3. Nzvimbo yakanyungudika 1083.4±0.2℃, nzvimbo yekuvira 2567℃. Mhangura ndiyo imwe yesimbi dzekutanga dzakawanikwa nevanhu uye imwe yeakanakisa simbi dzakachena. Iyo yakaoma zvishoma, yakaoma zvakanyanya uye isingapfeki. Iyo ine zvakare yakanaka ductility. Iyo ine yakanaka yekupisa uye magetsi conductivity. Mhangura uye mamwe alloys ayo ane yakanaka corrosion resistance uye akanyatsogadzikana mumhepo yakaoma. Asi mumhepo ine hunyoro, chidimbu chegirini yakakosha copper carbonate inogona kugadzirwa pamusoro payo, iyo inonzi verdigris. Inonyungudika mu nitric acid uye inopisa yakanyungudika sulfuric acid, uye inonyungudika zvishoma muhydrochloric acid. Inosvibiswa nyore nyore nealkali.
Main Mashandisirwo & Zvishandiso: Inozivikanwa nekunaka kwayo magetsi conductivity uye corrosion resistance. Mhangura nendarira fasteners inowanzoshandiswa mukubatanidza magetsi uye marine applications.
Ⅴ. Aluminium
Composition: Aruminiyamu yakachena kana aluminium alloys, iyo inogona kusanganisira zvinhu zvakaita semhangura, magnesium, silicon, kana zingi.
Aluminium isirivha chena inopenya simbi ine density ye2.702 g/cm3, inonyungudika inosvika 660.37 ℃, uye nzvimbo yekuvira inosvika 2467 ℃. Iyo ine yakanaka yekupisa conductivity, magetsi conductivity uye ductility. Aluminium inonzi inoshanda simbi element, asi dense oxide firimu ichaita pamusoro payo mumhepo, ichidzivirira kuti irege kuramba ichipindirana neokisijeni nemvura. Inogona kuita neokisijeni pakupisa kwepamusoro kuburitsa huwandu hwakawanda hwekupisa. Iyo musimboti weiyo thermite reaction inogona kushandiswa mukugadzira, senge welding simbi njanji, kunyungudutsa refractory simbi, uye kugadzira yechinyakare pyrotechnics.
Main Mashandisirwo & Zvishandiso: Yakareruka uye inoshingirira mukuora, ichiita kuti ive yakakodzera kune aerospace, mota, uye zvemugungwa application. Aluminium fasteners anoshandiswawo mukuvaka uye zvemagetsi nekuda kwehuremu hwadzo uye husiri hwemagineti.
Mitemo
• ISO(International Organisation for Standardization): Inopa zviyero zvepasi rose zvinoshanda pasi rose.
• GB(Guobiao, China National Standard): Chinese nyika mitemo.
• KUBVA(Deutsches Institut für Normung, German Institute for Standardization): Zvimiro zveGermany, zvinozivikanwa pasi rose.
• AISI/SAE(American Iron and Steel Institute / Society of Automotive Engineers): Zviyero zveAmerica, kunyanya zvesimbi.
• HE(Japanese Industrial Standards): Miyero yeJapan, inowanzoshandiswa munyika dzeAsia.
Chinyorwa chega chega chine zvachakanakira uye chinosarudzwa zvichienderana nezvinodiwa zvekushandisa, senge simba, corrosion resistance, tembiricha, uye mutengo. Izvo zvakakosha kuti usarudze yakakodzera zvinhu uye giredhi kuti uone kuti chibatiso chinoshanda zvakavimbika munzvimbo yayakada.
Webhusaiti yedu:https://www.fastoscrews.com/
Email: info@fasto.cn