Polyurethane cov zaub mov feem ntau cais rau peb hom raws li cov khoom siv thawj zaug ntawm lawv cov khoom siv ua ke ntawm, polyer}}}} -.
Polyester -} Raws li polyurethane yog feem ntau siv rau tsawg rau nruab nrab hardness rollers. Nws muaj cov khoom siv lub cev muaj zog thiab cov kuab tshuaj zoo, ua rau nws haum rau cov ntawv thov hauv kev lag luam hlau.
Polyether {-} Raws polyurethane yog qhov zoo rau high {1} - tawv ntoo. Nws muab cov dej tsis kam ua tau zoo heev, tsawg {{{{}} kub kuj, thiab yog siv dav hauv xaim kos duab thiab luam ntawv chais.
Polycaprolactone -} Raws li polyurethane cov pov thawj zoo dua kev ua tau zoo dua. Nws muaj qhov qis heev qis - kub thiab siv cov ntawv thov xav tau xws li muab cov txiv hmab.
1. Qhov yooj yim yuav tsum muaj rau cov khoom siv polyurethane hauv cov qhua
Cov Khoom Siv Hluav Taws Xob thiab Cov Neeg Khoos Phem: Yuav tsum ua kom tau raws li cov qauv kev ua tau zoo tshwj xeeb rau cov menyuam siv sib txawv.
Tsevneeg Koom Tes Ua Si: Yuav tsum muaj cov nplaum kom ruaj khov rau cov hlau core kom txhawb kev sib tham thiab molding cov txheej txheem.
Hardness: lub hardness ntawm cov menyuam yuav tsum tau sib dhos thiab ua tau raws li cov cai. Tawv rollers feem ntau muaj lub hardness ntawm 50-60 Ntug Dej A.
Cov Khoom Zoo: Cov menyuam yaus cov menyuam yuav tsum pub dawb los ntawm npuas, kom tsis muaj zog, lossis kev puas tsuaj tshuab.
Nto tas: Cov saum npoo yuav tsum tau du lossis kho raws li cov kev xav tau.
Taper (conicity): qhov sib txawv ntawm txoj kab uas hla ntawm nruab nrab thiab qhov kawg ntawm cov menyuam pab them nyiaj rau cov menyuam yaus ntev dua. Tus taper nce nrog cov menyuam ntev.
2. Hlau tub ntxhais ua haujlwm pretricatment
Kev tu: Cov saum npoo yuav tsum tau huv kom tshem tawm cov roj, roj nplua nyeem, thiab cov organic seem los ntawm oxidation. Cov kuab tshuaj xws li trichlorethylene tuaj yeem siv tau.
Xeb thiab oxide tshem tawm: sandblasting yog siv los tshem tawm xeb thiab oxide txheej. Rau cov cores steel, 80-100 mesh aluminium oxide Abrasive tau pom zoo; Rau txhuas cores, 140-320 mesh abrasive yuav tsum tau siv nrog ntub blasting. Tom qab sandblasting, txhua cov plua plav rov qab yuav tsum tau muab tshem tawm nrog cov kuab tshuaj. Yuav tsum tau sib raug zoo steel cores steel hauv 4 teev thiab txhuas cores tsis pub dhau 72 teev.
Daim Ntawv Thov Adhesive: Tsim nyog cov nplaum zoo li NA-1, chemlock-218, lossis thixon 422 yuav tsum tau siv. Tom qab daim ntawv thov yuav tsum yog huab cua qhuav rau 20 feeb thiab tom qab ntawd kho thaum 90 ± 10℃rau ib teev ua ntej ua ntej cam khwb cia polyurethane.