1.Kijan pou optimize materyèl kouch?
Chwazi substrate résine wo-manadjè: bay priyorite nan rezin ak ekselan fleksibilite ki ba-tanperati, tankou résine fluorokarbon (PVDF) ak fliyò polyvinylidene (PVF). Enèji kosyon fluorokarbon nan chèn molekilè li yo wo epi li pa fasil pou vin frajil nan tanperati ki ba. Si ou bezwen balanse pri a, ou ka chwazi modifye Polyester ranplase òdinè rijid Polyester (PE).
Add heareners ak elastomè: prezante ba-tanperati aditif fleksib nan résine a, tankou plastifyan ftalat, kawotchou nitril (NBR), elastomè an poliyiretàn (PU) ak lòt patikil elastik (atravè "enèji absòpsyon" soulaje enpak estrès). Pou egzanp, ajoute 5% -10% kawotchou nitrile nan résine Polyester ka diminye tanperati a tranzisyon frajil nan kouch a soti nan -15 degre nan -30 degre.
Kontwole dansite kwa-ki lye ak: diminye dansite nan kwa-ki lye ak nan kouch a ka amelyore fleksibilite. Pou egzanp, diminye degre nan kwa-ki lye ak nan kouch nan fluorokarbon soti nan 80% a 60% -70% ka siyifikativman diminye risk pou yo koube fann nan tanperati ki ba.
2.Kijan pou adapte pigman ak file?
Diminye pwopòsyon an nan fillers rijid: Evite twòp itilize nan file rijid tankou poud talk ak poud kwats (ki ka fasilman ogmante fragilite nan kouch la), epi sèvi ak file fleksib tankou pèl vè kre olye de sa, oswa ajoute yon kantite lajan ki apwopriye nan pigman elastik.
Chwazi pigman ki ba-kristalinite: pigman òganik yo pi pito ranplase kèk pigman inòganik (tankou gaz Titàn), paske patikil pigman òganik yo pi konpatib ak rezin epi yo pa fasil pou fòme pwen estrès nan tanperati ki ba.
3.Kijan yo chwazi materyèl substrate?
Choose low-carbon and high-toughness substrates: Low-carbon steel substrates (carbon content<=0.12%) are preferred, such as Q235B and SPCC (low-carbon grade), whose low-temperature impact energy (-40℃Charpy V-notch) can reach more than 27J, which is much higher than medium-carbon steel (carbon content 0.25%-0.6%, low-temperature Enpak enèji se souvan<15J); if higher toughness is required, micro-alloyed steel (such as low-temperature steel with added nickel and manganese, such as Q355ND, -40℃ impact energy ≥34J) can be selected.
Evite eleman frajil tankou fosfò ak souf: kontwole kontni an nan fosfò (p mwens pase oswa egal a 0.025%) ak souf (s mwens pase oswa egal a 0.015%) nan substra a, paske eleman sa yo fasil segregasyon nan fwontyè a grenn jaden, sa ki lakòz.
4.Kijan okipe substrate woule ak pwosesis tretman chalè a?
PWOGRAM APRE ROLLING Fwad: Atravè konplè rkwir (Tanperati 700-800 degre, ralanti ralanti), grenn yo substrate yo rafine (se gwosè a grenn jaden redwi soti nan 50μm a mwens pase 20μm), domaj yo fwontyè grenn jaden yo redwi, ak severite a ki ba-a se pou yo ka amelyore.
Control the rolling deformation: Avoid excessive cold rolling (deformation>80%) lakòz substrate travay redi. "Multi-Pass ti deformation woule" (Single Pass Deformation<20%) can be used to reduce internal stress accumulation and reduce the risk of low-temperature embrittlement.
5.Kijan pou kontwole pwodiksyon ak pwosesis pòs-pwosesis?
Optimize pwosesis la geri
Evite sou-geri oswa anba-geri: Kontwole tanperati a geri ak tan ki baze sou kalite a résine asire degre crosslinking kouch a rete nan "ranje a severite" nan 60%-80%.
Low-tanperati aje tretman
Post-pwodiksyon, bobin nan koulè-kouvwi sibi "ki ba-tanperati aje" nan prematireman lage estrès entèn nan kouch a ak diminye risk pou yo toudenkou fann ki te koze pa ba-tanperati enpak pandan itilize ki vin apre.
Ajisteman mikrostruktur sifas yo
Sèvi ak pwosesis la kouch yo kreye yon teksti mikwoskopik inegal oswa ajoute mikrosfè elastik pèmèt sifas la defòme pandan enpak yo absòbe kèk nan enèji a, diminye chans pou yo fann.