文档介绍：MOLD MＡTERＩＡＬＳ MＡKING ＴHＥ ＭＯST OＦ HIGＨ—ＰEＲFOＲMANCE MＯLＤ ＭATEＲＩALS
Undeｒsｔanding high coｎductｉｖity alloyｓ and optｉmiziｎg thｅir use ｃan help yｏu ｂｕiｌｄ ｂetter ｍｏlｄｓ.
By Dｏugｌas Vｅitch， Ｄirｅctｏr， Brｕｓh Wellmａn
Inｊection ｍoｌｄｅｒｓ ａnd blow ｍｏlders ｃan ｂｅnefit from hｉｇh cｏndｕcｔivｉty ａｌｌoys bｙ aｃｈiｅviｎｇ fａｓｔｅr cｙcle times aｎｄ ｂeｔteｒ part quality. There are certain proｐｅrtieｓ of tｈe mold mateｒial aｎd ｐｏｌymｅr ｔｈａｔ ｅnａｂle theｓe efficienciｅｓ ｔo ｂe rｅalｉzeｄ. Ｏnｃe tｈeｓe cｈaracteriｓtics are uｎdｅｒstｏｏｄ, mold bｕildeｒs can opｔimiｚe theｉr uｓｅ ｏf ｈigh－ｐerfｏrmaｎｃe matｅriaｌs tｏ ｐrｏvide a ｄuraｂｌe， ｆast-cycling ｍold ｆoｒ ｔhｅｉｒ customers.
Cooｌｉｎg Timｅ
Moｌd Alloy Theｒmal ＰroperｔｉｅｓﻫSome ｃｈaｒaｃterｉstics of ｍoｌd ｍateｒiaｌs enａbｌｅ ｕs ｔo bｅtteｒ ｕｎdeｒstaｎd the thermａl ｐrocesｓ ｔhat occurs whｉｌe mｏldinｇ. Ｔhrｅe ｉｍportaｎt ｐropｅrｔｉeｓ aｒe:
1. Thｅｒmal Coｎductivitｙ
Ｈigheｒ thｅrmal conducｔivｉty equａtｅs ｔo tｈｅ ｔrａｎｓfｅｒ ｏｆ ｍore tｈeｒｍal eneｒgy per unit ｏf tiｍe under ｓtｅａdy ｓtate conｄｉtioｎs.
2. Ｔhｅrmaｌ DｉffｕsiｖityﻫHｉgher theｒmaｌ dｉfｆuｓivity mｅａns tｈat ｔhｅrmａl equiｌiｂｒium ｗilｌ be ｒｅaｃｈeｄ faｓter wｈen thｅ ｔeｍperatuｒe chａnges. A gｏｏd thermａl diffｕser wｉｌl reａct ｍore ｑuickly to enｖｉrｏnmental tempeｒａtｕrｅ cｈａｎges.
3． Thermal Eｆfｕｓｉvity （coｎduｃｔiviｔｙ diｖidｅd by tｈe sｑuare rｏoｔ oｆ tｈｅ ｄiffｕsｉvity)ﻫＨiｇher tｈermａl eｆｆｕsｉvity is ａ ｍeａsｕｒe of ｔｈｅ ｍaｔerｉal’s eｆfiｃienｃｙ at insｔａｎtlｙ remｏｖing hｅａｔ ｆrom an oｂjｅｃｔ ａt a ｈiｇher ｔem