Hauv kev lag luam kev lag luam, tshwj xeeb tshaj yog rau siab - lub zog steel fasteners xws li Flanged Hexagon Head Bolt Screws, Hexagon Head Screws with Washers, thiab ntau yam Hexagon Head Fasteners nrog Ua -hauv Washers, nto blackening yog ib qho kev tiv thaiv xeb thiab kev zoo nkauj.
Blackening (tseem hu ua bluing lossis oxidation kev kho mob) cuam tshuam cov tshuaj tiv thaiv los tsim cov xim dub los yog xiav -dub oxide zaj duab xis ntawm cov hlau nto, txhim kho cov hlau corrosion, zoo nkauj, thiab kev sib dhos ua haujlwm. Raws li qhov sib txawv ntawm qhov kub thiab txias, cov txheej txheem blackening feem ntau muab faib ua peb hom: alkaline siab - kub blackening, chav - kub blackening, thiab residual heat blackening.
Alkaline Siab -Tsub Dub Tshuab
Alkaline siab-kub blackening yog ib txoj hauv kev zoo tshaj plaws rau kev kho steel nto. Lub hauv paus ntsiab lus yog hais tias nyob rau hauv ib tug muaj zog alkaline tov uas muaj ib tug oxidant (xws li sodium nitrate los yog sodium nitrite), ntawm ib tug kub ntawm 135-145 degree, steel reacts nrog cov oxidant los ua ib tug dub hlau nplaum hlau oxide zaj duab xis (Fe₃O₄).
Cov yeeb yaj kiab no feem ntau yog 0.5-0.8 μm tuab, daim ntawv cog lus ruaj khov rau cov hlau substrate, thiab muaj qhov ci ntsa iab. Nws yog tsim rau ntau yam hexagon taub hau flange bolts, bolts nrog flanges thiab hexagon taub hau, thiab lwm yam siab - lub zog fasteners.
Qhov zoo:
Cov yeeb yaj kiab yog ib qho nyuaj thiab muaj kev hnav zoo.
Cov txheej txheem cov cuab yeej yog yooj yim thiab tsawg - nqi.
Nws tsis hloov qhov precision nto thiab qhov ntev ntawm lub ntsia liaj qhov rooj.
Qhov tsis zoo:
Kev siv hluav taws xob siab; Ua haujlwm kub txog li 150 degree;
Muaj cov tshuaj phem (xws li nitrites);
Cov dej khib nyiab yuav tsum tau kho kom nruj, ua rau muaj kev cuam tshuam ib puag ncig tseem ceeb.
Yog li ntawd, cov txheej txheem no tseem siv dav hauv nruab nrab - thiab siab - lub zog fasteners, tab sis nws tau maj mam hloov los ntawm ntau qhov chaw nyob ib puag ncig- kub thiab pov tseg- cov txheej txheem kub blackening.
Chav kub Blackening Technology rau Steel Fasteners
Nrog rau kev txhim kho ntawm cov tswv yim tsim ntsuab, chav tsev kub blackening thev naus laus zis tau nce sai vim nws lub zog -txuag thiab qis- muaj kuab paug zoo. Cov tshuab no yog tsim rau me me mus rau nruab nrab- qhov loj me xws li Hex Head Screws nrog Washer Assembly thiab Hexagon Head Screws nrog Integrated Washer.
Cov yeeb yaj kiab tseem ceeb- tsim cov txheej txheem ntawm chav tsev kub blackening daws suav nrog:
Tooj -Selenium system
Tooj -Sulfur system
Copper-Manganese-Sulfur system, thiab lwm yam.
1. Copper-Selenium System Blackening Mechanism
Cov hlau substrate reacts nrog tooj liab ions kom precipitate tooj liab. Qhov saum npoo tooj liab reacts nrog selenides los ua ib tug dub tooj liab selenide zaj duab xis (Cu₂Se), uas yog ces oxidized los ua ib tug tuab zaj duab xis txheej nrog ib tug sib sib zog nqus xim dub.
2. Tsis yog -Selenide System Mechanism
Ib zaj duab xis yog tsim los ntawm cov xim dub xws li Cu₂O thiab CuS, uas ua rau muaj kev tiv thaiv zoo - corrosion thiab zoo nkauj.
3. Chav Kub Kub Blackening txheej txheem
Degreasing → Dej ntxuav → xeb tshem tawm → Blackening Treatment → Dej Ntxuav → Passivation / Sealing → Xeb -Inhibiting Oil immersion
Cov yeeb yaj kiab tuab yog kwv yees li 0.2μm, nrog rau qhov sib xws thiab glossy nto. Tom qab- cov txheej txheem kho (xws li passivation lossis dej-raws li sealing) yog qhov tseem ceeb rau kev txhim kho kev tiv thaiv xeb.
Qhov zoo:
Tsawg zog noj, kev khiav hauj lwm kub ntawm chav tsev kub;
Cov txheej txheem yooj yim, dav siv tau;
Uniform zaj duab xis xim, muaj zog zoo nkauj nyhuv.
Qhov tsis zoo:
Nyias zaj duab xis, nruab nrab hnav tsis kam;
Lub stability thiab ib puag ncig adaptability ntawm blackening tov yuav tsum tau tswj.
Residual Thaum tshav kub kub Blackening Technology
Residual heat blackening yog ib txoj kev tsim tshiab sai sai nyob rau hauv xyoo tas los no, tshwj xeeb tshaj yog haum rau fasteners xws li Hexagonal Head Screws Featuring Washers thiab Hexagon Flange Head Machine Screws, uas khaws cov kub kub tom qab kev kho cua sov.
Cov thev naus laus zis no siv cov cua sov uas nyob ntawm qhov chaw ua haujlwm tempering (160-500 degree) los ua cov ntaub ntawv organic- tsim cov tshuaj hauv cov tshuaj blackening, tsim cov organic polymer sib xyaw zaj duab xis. Cov yeeb yaj kiab no muaj kev tiv thaiv corrosion zoo heev thiab cov teebmeem zoo nkauj.
Main nta:
Nyias zaj duab xis (tsawg dua los yog sib npaug rau 0.2μm), tseem muaj kev tiv thaiv xeb zoo heev;
Nws tuaj yeem ua ke nrog cov txheej txheem tempering rau kev nruam, automated ntau lawm.
Tsis muaj dej pov tseg, ib puag ncig tus phooj ywg, thiab lub zog-txuag;
Haum rau carbon steel, alloy steel, thiab cua sov- kho qhov chaw.
Cov kev ceev faj:
Workpieces yuav tsum tau khaws cia ntawm qhov kub thiab txias.
Cov me me - cov bolts loj yuav muaj qhov cuam tshuam tsis zoo yog tias cov cua sov tsis txaus.
Qhov hnav tsis kam ntawm cov yeeb yaj kiab yog qis dua li ntawm Fe₃O₄ cov yeeb yaj kiab.
Innovation thiab Development Trends of Blackening Technology
Rau siab - lub zog fasteners xws li Flamed Hex Lub Taub Hau Bolts thiab Hex Head Screws nrog Washers, yav tom ntej blackening thev naus laus zis tab tom txhim kho hauv cov lus qhia hauv qab no:
Txhim kho zaj duab xis adhesion thiab corrosion kuj, ncua kev pab cuam lub neej;
Standardizing thiab environmentally friendly blackening daws kom txo tau cov teeb meem tshuaj;
Tsim cov khoom siv hluav taws xob, txuas ntxiv blackening cov kab ntau lawm, txuas lawv nrog kev kho cua sov, tu, thiab kuaj
Qhia txog kev tsim nanofilm thiab cov cuab yeej tiv thaiv sib xyaw los txhim kho cov yeeb yaj kiab ceev thiab zoo nkauj.
Nrog rau kev nce qib ntawm kev tsim ntsuab thiab lean ntau lawm, cov txheej txheem blackening niaj hnub yuav ua lub luag haujlwm tseem ceeb hauv kev tsim cov Hexagon Head Screws nrog Washers, Hexagon Flange Lub Taub Hau Tshuab Screws, thiab lwm yam siab -precision fasteners.
Xaus
Blackening thev naus laus zis tsis yog tsuas yog txoj kev tiv thaiv saum npoo xwb tab sis kuj yog txheej txheem tseem ceeb rau kev txhim kho qhov zoo thiab kev sib tw hauv kev tsim khoom fastener. Los ntawm alkaline siab-kub mus rau chav tsev kub, thiab tom qab ntawd kom pov tseg cov cua sov kom qhuav, cov kev sib txawv ntawm kev hloov pauv mus rau cov khoom sib txawv thiab cov kev xav tau ua haujlwm.
Hauv kev tsim cov khoom lag luam xws li Flamed Hexagon Head Bolt Screw, Hexagon Head Flange Bolt Screw, thiab Washer-nrog Hexagon Head Screws, kev xaiv tsim nyog ntawm cov txheej txheem blackening tuaj yeem tsis tsuas yog txhim kho corrosion kuj tab sis kuj txhim kho qhov zoo sib xws thiab kev sib dhos smoothness, muab cov khoom siv kev txhawb nqa rau siab - kawg manufacturing.
tiv tauj peb
