Screws yog cov cuab yeej siv lub cev thiab lej cov ntsiab lus ntawm oblique ncig kev sib hloov thiab kev sib txhuam ntawm cov khoom kom maj mam zawm cov khoom siv tshuab. Screws yog ib lo lus siv rau cov fasteners, feem ntau siv hauv txhua hnub. Screws yog ib qho tseem ceeb ntawm kev lag luam tsim nyog hauv lub neej niaj hnub, xws li cov ntsia hlau me me siv hauv cov koob yees duab, tsom iav, moos, hluav taws xob, thiab lwm yam; General screws rau TV, khoom siv hluav taws xob, suab paj nruag, rooj tog, thiab lwm yam; Raws li rau engineering, kev tsim kho, thiab txuas hniav, cov ntsia hlau loj thiab cov txiv ntoo yog siv; Cov khoom siv tsheb thauj mus los, dav hlau, tsheb ciav hlau, tsheb, thiab lwm yam. siv cov ntsia hlau loj thiab me me ua ke. Screws muaj cov haujlwm tseem ceeb hauv kev lag luam, thiab ntev npaum li kev lag luam muaj nyob hauv lub ntiaj teb, kev ua haujlwm ntawm cov ntsia hlau yuav yog ib qho tseem ceeb. Screws tau ua ib qho kev tsim tawm hauv tib neeg kev tsim khoom thiab lub neej rau ntau txhiab xyoo, thiab raws li lawv daim ntawv thov teb, lawv yog qhov kev tsim kho zoo tshaj plaws ntawm tib neeg.
Lub luag haujlwm tseem ceeb ntawm cov ntsia hlau yog txuas ob lub workpieces ua ke, ua lub luag haujlwm nruj.
Screw, tseem hu ua "screw" lossis "screw rod" los ntawm qee cov neeg. Qhov tseeb, cov ntsia hlau yog cov ntsiab lus dav dav, thaum cov ntsia hlau thiab cov ntsia hlau ntsia hlau sib txawv ntawm ib leeg. Screws feem ntau hu ua ntoo screws; Nws yog hom nrog lub taw qhia pem hauv ntej kawg thiab lub suab loj dua, feem ntau yog siv rau fastening ntoo thiab yas qhov chaw. Lub taub hau ntsia hlau yog lub tshuab ntsia hlau (cov ntsia hlau tshuab) nrog lub tiaj tiaj pem hauv ntej kawg, ib lub suab me me thiab tsis sib xws, thiab feem ntau yog siv los zawm cov hlau thiab tshuab.
Feem ntau specifications
A: Metric ntsia hlau B: American ntsia hlau C: English ntsia hlau
A: Metric mechanical screws:
Piv txwv li: M3 x 6-PPB: M3 txhua yam ntsia hlau, 6 hli ntev, ntoo khaub lig zoo li tus, puag ncig lub taub hau, dub plated
Finish Code: Tshwm Sim Kev Kho Mob Specification
Lub taub hau Code: Lub taub hau zoo.
Ntsia taub hau zoo li. Lub taub hau cylindrical. Ib nrab poob taub hau. Txau koj lub taub hau. Lub taub hau cylindrical. Pan taub hau. Ib nrab taub hau. Hexagonal taub hau
Kev paub txog ntaub ntawv
Muaj peb hom qauv tseem ceeb hauv kev ua lag luam: carbon steel, stainless hlau, thiab tooj liab.
Ib tug carbon steel. Distinguishes cov pa roj carbon tsawg, nruab nrab carbon steel, siab carbon steel, thiab alloy hlau los ntawm lawv cov ntsiab lus carbon nyob rau hauv cov ntaub ntawv carbon steel.
Tsawg carbon steel nrog C% Tsawg dua lossis sib npaug rau 0.25% feem ntau hu ua A3 steel hauv Suav teb. Nws yog feem ntau hu ua 10081015181022 nyob rau txawv teb chaws. Feem ntau yog siv rau qib 4.8 bolts, qib 4 ceev, me me screws thiab lwm yam khoom uas tsis muaj hardness yuav tsum tau. (Ceeb Toom: Cov ntsia hlau ntsia hlau yog tsim los ntawm 1022 khoom.)
2. Carbon steel 0.25%
3. High carbon steel C% Ntau dua lossis sib npaug rau 0.45%. Yeej tsis siv nyob rau hauv kev ua lag luam
4- alloy steel: Ntxiv cov ntsiab lus alloying rau cov pa roj carbon zoo tib yam kom nce qee cov khoom tshwj xeeb ntawm cov hlau, xws li 35, 40 chromium molybdenum, SCM435, 10B38. Aromatic screws tsuas yog siv SCM435 chromium molybdenum alloy steel, uas yog tsim los ntawm C Si, Mn, P, S, Cr, Mo.
Ob chav stainless hlau. Kev ua haujlwm siab: 45, 50, 60, 70, 80
1. Cov khoom tseem ceeb ntawm austenite (18% Cr, 8% Ni) muaj cov cua sov zoo, tiv thaiv corrosion, thiab weldability. A1, A2, A4
2 martensite thiab 13% Cr muaj tsis zoo corrosion kuj, siab zog, thiab zoo hnav tsis kam. C1, C2, C4 ferritic stainless hlau. 18% Cr muaj zoo forging zog thiab muaj zog corrosion kuj tshaj martensite. Cov khoom siv tseem ceeb hauv kev lag luam yog los ntawm Nyiv. Feem ntau muab faib los ntawm qib rau SUS302, SUS304, thiab SUS316.
Peb tooj. Cov khoom siv feem ntau yog tooj dag ... zinc tooj liab alloy. H62, H65, thiab H68 tooj liab feem ntau yog siv los ua tus qauv hauv kev ua lag luam.
Ntsia hlau labeling
Lub annotation hom ntawv rau thread markings yog:
Xov code - Xov kam rau ua ib cheeb tsam code (pitch inch, top diameter) - Spinning length
l: Tus lej kam rau ua yog sawv cev los ntawm cov lej thiab cov tsiaj ntawv (cov tsiaj ntawv loj rau cov xov sab hauv thiab cov tsiaj ntawv me rau cov xov sab nraud), xws li 7H, 6g, thiab lwm yam. Nws yuav tsum raug sau tseg tias 7H, 6g, thiab lwm yam. sawv cev rau xov tolerances, thaum H7, g6 sawv cev rau lub tog raj kheej kam rau cov lis dej num.
2: Qhov ntev ntawm kev sib hloov tau teev tseg raws li luv (sawv cev los ntawm S), nruab nrab (sawv cev los ntawm N), thiab ntev (sawv cev los ntawm L). Feem ntau, cov xov haum ntev tsis tau qhia, thiab cov xov kam rau siab yog txiav txim siab raws li qhov nruab nrab haum ntev (N). Yog tias tsim nyog, tus ntsia hlau ntev code S lossis L tuaj yeem ntxiv, xws li "M20-5g6g-L". Thaum muaj qhov xav tau tshwj xeeb, tus lej tus nqi ntawm qhov kev sib hloov ntev tuaj yeem qhia tau, xws li "M20-5g6g-30".
Cov xov tsis tu ncua
Ordinary coarse xov: feature code M + nominal txoj kab uas hla + kev taw qhia kev sib hloov + xov kam rau ua zone code (pitch inch, top diameter) - rotation length
Ordinary zoo xov: feature code M + nominal txoj kab uas hla * suab + kev taw qhia ntawm kev sib hloov + xov kam rau ua zone code (pitch inch, top diameter) - tig ntev
Cov xov sab xis raug tshem tawm yam tsis muaj lus piav qhia, thiab cov xov sab laug yog sawv cev los ntawm "LH".
M 16-5g6g sawv cev rau cov xov ntxhib zoo tib yam xov, nrog lub nominal txoj kab uas hla ntawm 16 thiab txoj cai tig. Cov xov kam rau ua ib cheeb tsam muaj ib lub suab ntawm 5g thiab ib txoj kab uas hla loj ntawm 6g, thiab cov xov sib txuas ntev yog suav tias yog qhov ntev nruab nrab.
M16 × 1 LH-6G sawv cev rau cov xov zoo tib yam xov, nrog lub nominal txoj kab uas hla ntawm 16 thiab ib lub suab ntawm 1. Nws yog sab laug tes thiab muaj ib tug kam rau ua ntawm 6G rau ob qho tib si nruab nrab thiab loj diameters. Qhov ntev ntawm kev sib hloov yog suav tias yog qhov nruab nrab ntev.
Cov lus piav qhia hom yog: feature code (sawv cev los ntawm G rau cylindrical yeeb nkab threads thiab NPT rau conical yeeb nkab threads) + loj code + kam rau ua qib code + rotation kev taw qhia
G1A -- LH sawv cev rau British tsis threaded sealing yeeb nkab threads, nrog ib tug loj code ntawm 1 nti, sab laug tes tig, thiab ib tug kam rau ua theem ntawm A.
Rcl / 2 sawv cev rau British txheem xov sealing cone yeeb nkab xov, loj code 1/2in, txoj cai tig.
Kev nkag siab zoo ntawm kev thov
1. Ua ntej, tshem tawm cov sludge rau ntawm qhov chaw ntawm lub taub hau tawg thiab siv rab phom nruab nrab txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhuam nws, koj yuav tsum tshem tawm cov sludge. Tom qab ntawd, siv lub laum hluav taws xob los nruab ib lub laum me me nrog txoj kab uas hla ntawm 6-8 millimeters txhawm rau tho qhov ntawm qhov nruab nrab ntawm rab phom qhov ntawm seem, xyuas kom lub qhov drilled kom huv si. Tom qab drilling los ntawm lub qhov, tshem tawm qhov xyaum me me thiab hloov nws nrog ib tug laum me ntsis nrog ib txoj kab uas hla ntawm 16 millimeters. Txuas ntxiv kom loj thiab laum los ntawm lub qhov uas lub ntsia liaj qhov rooj tawg.
2. Siv cov welding rods uas muaj txoj kab uas hla tsawg dua 3.2 millimeters thiab siv cov nruab nrab thiab me me tam sim no los vuam los ntawm sab hauv tawm nyob rau hauv lub qhov drilling qhov ntawm lub bolts tawg. Siv ib nrab ntawm tag nrho qhov ntev ntawm lub bolts tawg thaum pib ntawm qhov vuam. Thaum pib lub vuam, tsis txhob khiav lub arc ntev heev kom tsis txhob hlawv los ntawm cov phab ntsa sab nrauv ntawm lub bolts tawg. Tom qab welding mus rau sab saum toj kawg lub ntsej muag ntawm lub bolts tawg, txuas ntxiv mus rau vuam ib lub tog raj kheej nrog ib txoj kab uas hla ntawm 14-16 millimeters thiab ib qhov siab ntawm 8-10 millimeters.
3. Tom qab vuam, siv rauj los tsoo lub ntsej muag kawg ntawm cov ntsia hlau tawg kom ua rau muaj kev vibration raws nws axis. Vim lub tshav kub tsim los ntawm yav dhau los arc thiab tom qab txias, ua ke nrog kev vibration ntawm lub sij hawm no, cov xov ntawm lub bolts tawg thiab lub cev yuav xoob.
4. Kev soj ntsuam kom zoo: Thaum pom cov xeb me me los ntawm cov pob txha tawg tom qab sib tsoo, cov txiv ntoo M18 tuaj yeem muab tso rau ntawm lub taub hau welded thiab welded ua ke.
5. Tom qab welding, siv ib lub paj paj wrench los npog cov txiv ntoo thiab ntswj nws rov qab los thaum nws tseem kub. Koj tuaj yeem siv rauj me me txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhuam, koj tuaj yeem siv lub rauj me me los tuav lub ntsej muag kawg ntawm cov txiv ntoo.
6. Tom qab tshem tawm cov ntsia liaj qhov rooj tawg, siv cov kais dej uas tsim nyog los ua cov xov hauv lub thav duab ib zaug kom tshem tawm cov xeb thiab lwm cov khib nyiab ntawm lub qhov.
Kev tshuaj xyuas txoj kev
Muaj ob hom kev tshuaj xyuas saum npoo rau cov ntsia hlau: ib qho yog kev tshuaj xyuas ua ntej electroplating tom qab ntau lawm, thiab lwm yam yog kev tshuaj xyuas tom qab electroplating, uas txhais tau tias kev tshuaj xyuas tom qab cov ntsia hlau yog hardened thiab ntsia hlau nto yog kho. Ua ntej electroplating, nws yog ib qho tsim nyog yuav tsum tau kuaj xyuas cov ntsia hlau hauv txhua yam xws li qhov loj me thiab kev ua siab ntev tom qab tsim khoom. Xyuas seb nws ua tau raws li lub teb chaws cov qauv lossis cov neeg siv khoom xav tau. Tom qab kev kho saum npoo ntawm cov ntsia hlau, nws yog ib qho tsim nyog yuav tsum tau kuaj xyuas cov ntsia hlau electroplated, feem ntau yog xyuas cov xim ntawm plating thiab seb puas muaj cov ntsia hlau puas. Thaum xa cov khoom ntsia hlau rau cov neeg siv khoom hauv txoj kev no, lawv tuaj yeem hla cov kev lis kev cai zoo thaum tau txais cov khoom. Kev tshuaj xyuas tom qab kho cov ntsia hlau:
Cov tsos zoo yuav tsum
Kev tshuaj xyuas ntawm cov ntsia hlau zoo li yog ua los ntawm ntau yam xws li cov tsos, electroplating txheej, thiab lwm yam.
2, Kev tshuaj xyuas ntawm cov ntsia hlau txheej thickness
1. Kev ntsuas cov cuab yeej
Qhov yuav tsum tau muaj xws li micrometers, vernier calipers, plug gauges, thiab lwm yam.
2. Magnetic method
Cov txheej txheem sib nqus yog siv los ntsuas qhov tuab ntawm txheej txheej, uas yog qhov ntsuas tsis muaj kev puas tsuaj ntawm cov txheej txheem tsis sib nqus ntawm cov hlau nplaum sib nqus siv cov hlau nplaum tuab.
3. Microscopic txoj kev
Cov txheej txheem microscopic, tseem hu ua metallographic method, suav nrog kev nthuav dav corroded fastener ntawm lub tshuab ntsuas metallographic nrog lub micrometer eyepiece los ntsuas qhov tuab ntawm txheej ntawm ntu ntu.
4. Lub sij hawm ua kua ntws txoj kev
Lub sijhawm ua kua dej ntws yog siv cov tshuaj uas tuaj yeem yaj cov txheej txheem kom ntws mus rau hauv lub zos ntawm cov txheej txheej, thiab suav cov thickness ntawm txheej raws li lub sijhawm xav tau rau cov txheej hauv zos kom yaj. Kuj tseem muaj txheej txheej droplet, anodic dissolution Coulomb txoj kev, thiab lwm yam.
3, Kev tshuaj xyuas ntawm adhesion lub zog ntawm cov ntsia hlau txheej
Muaj ntau txoj hauv kev los ntsuas qhov adhesion ntawm cov txheej thiab cov hlau substrate, feem ntau suav nrog cov hauv qab no.
1. Kev sib txhuam polishing kuaj; 2. Cov txheej txheem ua ntaub ntawv thov; 3. Txoj kev khawb; 4. Kev sim khoov; 5. Kev ntsuas cua sov; 6. Nyem txoj kev.
4, Kev tshuaj xyuas corrosion kuj ntawm cov ntsia hlau txheej
Cov txheej txheem tshuaj xyuas rau corrosion kuj ntawm coatings muaj xws li: atmospheric burst test; Neutral ntsev tsuag test (NSS test); Acetate spray test (ASS test) thiab copper accelerated acetate spray test (CASS test); Thiab corrosion paste corrosion test (CORR test) thiab cov tshuaj tiv thaiv corrosion test; Immersion test, immersion corrosion test, thiab lwm yam.
Scope ntawm daim ntawv thov
Muaj ntau lub npe rau screws, thiab txhua tus neeg yuav muaj ntau lub npe. Qee tus neeg hu lawv cov ntsia hlau, qee tus hu lawv cov ntsia hlau, qee tus hu lawv cov qauv, thiab qee tus hu lawv cov fasteners. Txawm hais tias muaj ntau lub npe, lub ntsiab lus yog tib yam, lawv txhua tus screws. Screws yog ib lo lus siv rau fasteners. Lub hauv paus ntsiab lus ntawm screws yog siv lub cev thiab lej cov ntsiab lus ntawm oblique ncig rotation thiab kev sib txhuam quab yuam ntawm ib yam khoom kom maj mam zawm cov khoom siv ntawm cov khoom.
Screws yog qhov tseem ceeb hauv lub neej niaj hnub thiab kev tsim khoom lag luam, yog li screws tseem hu ua mov ntawm kev lag luam. Daim ntawv thov ntawm cov ntsia hlau suav nrog cov khoom siv hluav taws xob, cov khoom siv tshuab, cov khoom siv digital, cov khoom siv hluav taws xob, thiab cov khoom siv hluav taws xob. Cov ntsia hlau kuj tseem siv hauv nkoj, tsheb, hydraulic engineering, thiab txawm tias kev sim tshuaj.
Muaj ntau ntau hom screws, txawm tias lawv yog cov ntsia hlau me me rau cov tsom iav lossis cov ntsia hlau loj rau cov khoom siv hluav taws xob hnyav. Qhov tseeb ntawm cov ntsia hlau feem ntau yog 6g qib (2 qib, American specification "IFI" yog 2A cov hniav), thiab cov ntsia hlau ntxhib siv hauv kev tsim kho yog qib 1g.
Kev siv ntau yam ntawm cov ntsia hlau tau ua rau muaj kev lag luam loj rau cov ntsia hlau, uas ua rau muaj coob tus neeg tsim khoom tsim cov ntsia hlau. Thaum xaiv ib lub chaw tsim khoom ntsia hlau, tus neeg yuav khoom yuav tsum xub nkag siab qee qhov kev paub txog kev ua haujlwm ntawm cov ntsia hlau, xws li cov qauv kev faib cov ntsia hlau thiab American cov ntawv qhia tshwj xeeb.
Kev ua haujlwm ntawm kev siv
Self tapping screws
Rau tus kheej tapping screws nrog diameters li ntawm 0.8mm txog 12mm. Rau cov hom screws, lawv feem ntau muaj hardness siab. Tus kheej tapping screws yuav tsum tau ua ib qho kev ntsuam xyuas, uas yuav tsum tau muab cov ntsia hlau ntsia hlau rau hauv cov phaj xeem kom paub tseeb tias qhov tawv ntawm cov ntsia hlau ua tau raws li tus qauv,
Drill Tail Screw
Tus Tsov tus tw ntawm ib tug ntsia hlau yog feem ntau nyob rau hauv cov duab ntawm ib tug laum tail. Hom ntsia hlau no muaj zog heev, thiab piv rau cov ntsia hlau zoo tib yam, nws tsis tsuas yog muaj peev xwm kho tau zoo dua, tab sis kuj tseem muaj zog heev hauv kev sib txuas cov khoom. Rau cov ntsia hlau nrog qhov kev ua tau zoo no, nws feem ntau tsis tas yuav tsum tau ua haujlwm pabcuam thiab tuaj yeem ncaj qha mus laum lub qhov ntawm cov khoom kom xauv nws hauv. Tsis tsuas yog nws yooj yim heev rau siv, tab sis nws tuaj yeem txhim kho kev ua haujlwm zoo. Hom laum tail ntsia hlau tuaj yeem hais tias yog qhov kev xaiv zoo tshaj plaws rau cov neeg ua haujlwm hauv ntau qhov chaw
Anti corrosion technology
Stainless hlau screws yog ua los ntawm cov hlau, thiab muaj plaub txoj hauv kev tseem ceeb rau kev tiv thaiv kev xeb hlau, uas yog cov khoom ntawm cov khoom siv nws tus kheej, ib puag ncig siv, kev sib tshuam ntawm cov ntaub ntawv thiab ib puag ncig, thiab txhim kho kev tsim cov qauv hlau. Yog tias ua tiav corrosion-resistant alloy yog siv los tsim stainless hlau screws, tshwj tsis yog tias muaj kev xav tau tshwj xeeb, nws tsis raug nqi los ntawm kev pom kev lag luam. Nws tseem yog impractical kom cais tawm ntawm qhov ntsia hlau los ntawm ib puag ncig yam uas ua rau corrosion. Kev txhim kho kev tsim cov qauv hlau tuaj yeem txhim kho qhov cuam tshuam ntawm cov xwm txheej tshwj xeeb hauv qee qhov xwm txheej, tab sis kev tsim ntawm cov hlau tsis muaj steel feem ntau tsis tuaj yeem kho tau tag nrho, thiab lawv txoj haujlwm tu tsis nyob mus ib txhis. Yog li, txoj kev no tsis tuaj yeem daws qhov teeb meem. Tsuav nws yog anti-corrosion ntawm qhov chaw, uas yog, sab nraud kev tiv thaiv corrosion yog txoj kev siv dav tshaj plaws.
Kev tiv thaiv corrosion ntawm qhov chaw ntawm stainless hlau screws yog hais txog kev siv ntau txoj hauv kev los siv cov txheej txheem txij nkawm ntawm cov hlau nto. Nws txoj haujlwm yog cais cov hlau los ntawm ib puag ncig corrosive, txo cov txheej txheem corrosion, los yog txo qhov kev sib cuag ntawm cov xov xwm corrosive thiab hlau nto, thiaj li zam los yog txo corrosion.
Cov txheej txheem tu yuav tsum muaj peev xwm ua tau raws li cov hauv qab no:
1. Corrosion kuj, hnav tsis kam, siab hardness
2. Tightly tsim, zoo, thiab nrog me pores.
3. Muaj zog sib cais los ntawm lub hauv paus hlau thiab zoo adhesion.
4. Sib npaug sib npaug thiab muaj qee qhov tuab.
Cov txheej txheem kev saib xyuas feem ntau yog muab faib ua ob hom: hlau txheej thiab tsis yog hlau txheej. Hlau txheej yog hais txog cov txheej txheem txij nkawm uas tsim los ntawm kev siv cov hlau tsis muaj corrosion-resistant los yog alloys rau ntawm cov hlau yooj yim corroded. Hom txheej no tseem hu ua txheej txheej. Muaj ntau txoj hauv kev thiab ntau yam rau kev tsim cov hlau txheej, uas feem ntau yog electroplating, ua raws li cov hlau molten immersion (kub dip) thiab chemical deg kho. Cov txheej tsis yog xim hlau yog hais txog kev siv cov khoom siv organic xws li cov xim thiab cov khoom siv tsis zoo xws li ceramics los tsim cov txheej txheem ntawm cov khoom siv hlau lossis cov khoom siv. Cov txheej txheem kev saib xyuas no tuaj yeem cais tawm lub hauv paus hlau los ntawm ib puag ncig nruab nrab, zam kev tsim ntawm corrosion ntawm lub hauv paus hlau vim yog kev sib cuag nrog corrosion nrog stainless hlau qauv nruab nrab.
Kev ntsuas dej tsis zoo
Hlau ntsia hlau yog nquag rusting nyob rau hauv ib puag ncig ntub. Txhawm rau tiv thaiv xeb, cov ntsia hlau yuav tsum muaj dej-pov thawj thiab noo noo-pov thawj.
Cov txheej txheem rau cov dej tsis muaj pov thawj thiab noo noo-pov thawj screws yog raws li nram no: (1) Siv cov xim tsis muaj kuab lom ntau li ntau tau thaum lub tshuab vibrating. (2) Nws yog qhov zoo tshaj plaws los xaiv cov xim pleev xim tsis muaj oxidation, xws li epoxy urethane raws lossis tsis hloov epoxy raws li cov xim pleev xim. (3) Thaum siv melamine acid impregnating xim, qhov kub thiab txias yuav tsum tau kho. Qhov kub kho yuav tsum siab dua 130 degree me ntsis (xws li 135 degree) thiab lub sijhawm kho yuav tsum siab tshaj 180 feeb. Cov txheej txheem yuav tsum tau ua raws li nruj me ntsis, tshwj xeeb tshaj yog nyob rau hauv high kub thiab noo caij. Los ntawm qhov kev xav ntawm kev tiv thaiv xeb, lub sij hawm ziab (kho) lub sij hawm teev nyob rau hauv cov xim Hoobkas cov qauv yuav tsis txaus, thiab lub cev muaj zog muaj ib tug tshwj xeeb sab hauv. (4) Siv cov xim uas tsis muaj cov kua qaub tsis haum. (5) Xaiv cov xim uas muaj hydrolysis zoo