1.Vim li cas qhov adhesion ntawm qhov qub txias -rolled coil tsis zoo?
Tsis tshua muaj zog saum npoo: Cov hlau huv huv muaj lub zog saum npoo av, tab sis thaum lub sijhawm khaws cia thiab kev thauj mus los, cov txheej txheem oxide nyias nyias ua rau ntawm qhov chaw txias -rolled coils, uas tseem nqus cov roj, plua plav, thiab noo noo, txo qhov tseeb ntawm lub zog thiab ua rau nws nyuaj rau cov nplaum kom ntub thiab sib kis.
Deg contamination txheej:
Rolling roj / xeb inhibitor: Cov roj seem tom qab txias dov yog tus yeeb ncuab loj tshaj ntawm adhesion.
Plua plav thiab impurities.
Cov txheej txheem oxide tsis ruaj khov: Cov txheej txheem pib oxide muaj cov qauv xoob thiab tsis muaj zog.
Nthuav du nto: Qhov saum npoo ntawm cov khaub thuas- dov coils yog tiaj tus, tsis muaj qhov microscopic roughness xav tau rau kev sib koom ua ke.
2.Yuav ua li cas kho qhov chaw kom txhim kho adhesion?
** Kev Ntxuav thiab Degreasing (Qhov Yuav Tsum Tau Muaj): **
Siv cov kuab tshuaj organic (xws li acetone, isopropanol) lossis tshwj xeeb alkaline degreasers kom huv si tshem cov roj thiab roj. Qhov no yog lub hauv paus rau tag nrho cov kev kho mob tom ntej.
** Kev Kho Kho Kho Kho Tshuab (Kev Txhim Kho Mechanical Adhesion): **
** Sib tsoo / Roughening:** Siv cov ntawv xuab zeb, txhuam hlau, thiab lwm yam, los tsim micro-roughness, ua rau thaj tsam loj.
**Sandblasting:** Ib txoj hauv kev zoo tshaj plaws, tshem tawm cov txheej txheem oxide thiab cov kab mob kom huv si, thiab tau txais ib qho zoo, muaj zog ntxhib saum npoo, zoo heev txhim kho adhesion.
** Kev kho tshuaj (ua kom muaj lub ntsej muag zoo heev):**
** Phosphating: ** Qhov zoo tshaj plaws classic thiab zoo hlau pretreatment txoj kev. Nws tsim ib tug ntxeem tau phosphate siv lead ua zaj duab xis rau ntawm steel nto. Cov yeeb yaj kiab no tau ruaj khov rau cov hlau substrate thiab muaj thaj tsam loj thiab muaj zog polarity, ua rau nws tsim muaj zog lub cev adsorption thiab tshuaj bonds nrog adhesives. Dav dav siv hauv tsheb, kev sib txuas ua ke, thiab lwm yam.
**Passivation:** Feem ntau yog siv rau cov hlau tsis muaj steel, thiab tseem siv tau rau txias -rolled carbon steel, tsim cov oxide zaj duab xis tuab thiab ruaj khov.
Txheej kev kho mob (hloov interface zog):
Yog hais tias qhov txias -dov coil twb tau galvanized, pleev xim rau, los yog hmoov-coated, ces lub hom phiaj adhesion yog cov coatings. Nyob rau hauv cov ntaub ntawv no, ib tug tshwj xeeb adhesive optimized rau cov coatings yuav tsum tau xaiv.
3.Yuav ua li cas xaiv cov nplaum nplaum?
Cov qauv kev sib txuas (High-Strength, Load-Bearing Components):
Epoxy Resin Adhesives: Muaj zog adhesion, siab hardness, thiab zoo tshuaj tsis kam.
Reactive Acrylic Adhesives (piv txwv li, AB kua nplaum, acrylic structural adhesives): siab zog, zoo toughness, thiab tej yam kuj.
Polyurethane Structural Adhesives: Zoo heev yooj thiab qaug zog tiv thaiv.
Tsis yog -Structural/Sealing Bonding:
Silicone Sealants: Nruab nrab adhesion tab sis zoo heev elasticity thiab huab cua tsis kam; feem ntau yog siv rau sealing.
Siab -Kev Ua Haujlwm Siab- Cov nplaum nplaum (xws li VHB ob lub-sided daim kab xev): Zoo adhesion rau huv qhov chaw, yooj yim rau thov, thiab poob siab -absorbing.
4.Dab tsi yog qhov kev txiav txim siab rau nws daim ntawv thov hauv kev kho mob lub rooj zaum rooj zaum?
Durability thiab Kev Nyab Xeeb: Siab- qauv kev kho deg (xws li phosphating thiab txau) thiab siab - lub zog ntawm cov nplaum nplaum yog qhov tseem ceeb los xyuas kom tsis muaj delamination nyob rau hauv ntev - lub sij hawm vibration, load, thiab tu / sterilization tej yam kev mob.
Cov txheej txheem kev ntseeg tau: Adhesive bonding txheej txheem (tshuaj, siv cov nplaum, kho) yuav tsum tau tswj nruj thiab nyob ntawm cov txheej txheem kev ruaj ntseg dua li cov neeg kho tshuab fastening (screws, vuam).
Kev daws teeb meem: Hauv kev tsim khoom tiag tiag, cov nplaum nplaum feem ntau ua ke nrog kev sib txuas ntawm cov tshuab (xws li cov qauv tsim) los yog qhov chaw vuam los muab ntau txheej kev nyab xeeb.
5.Dab tsi yog cov lus xaus thiab cov lus pom zoo?
Raw condition: pluag. Tsis txhob siv cov nplaum ncaj qha rau qhov tsis muaj qhov txias txias -rolled coils.
Kev kho mob: tuaj yeem ua tiav hauv cov xwm txheej zoo, ua tau raws li qhov xav tau siab tshaj plaws rau cov ntawv thov kev lag luam.
Txoj kev xyaum zoo tshaj plaws:
Thorough cleaning and degreasing -> Sandblasting or phosphating ->Ua mus rau kauj ruam tom ntej kom sai li sai tau (hauv teev).
Xaiv cov khoom tsim nyog-qib nplaum raws li kev sib koom ua ke (lub zog, elasticity, kub tsis kam, tawm tsam).
Ua raws li cov txheej txheem nplaum nplaum rau kev thov, sib dhos, thiab kho.
Rau cov khoom tseem ceeb ntawm kev nyab xeeb, ib txwm ua qhov kev kuaj adhesion (piv txwv li, ASTM D4541 rub- tawm kev xeem).