BRECOtimingbeltPUtimingbelttimingbeltmanufacturingprocessThemoldingmethodofcuringmethodsarethefollowingtwo:Vulcanizingcramp(1)appliestosemi-finishedmoldingwithmoldmethodtopressurethroughthehoop,andthensendVulcanizationortabletpressvulcanization.(2)theCuringapplieswithembryosformingthemoldingdrum.Putpoucheswithembryostogetherwiththeformingdrum,intothecuringtank,internalandexternalpressure,heating.Thefirstphaseofthevaporpressureof0.3to0.4MPa,for2-3minutes;thesecondstageandthenpressurizedto0.8to1MPa,continueduntilthespecifiedcuringcycle.CastingmethodPolyesterpolyurethaneasthemainmaterial,throughthefourstepstocomplete.1,adipicacidandethyleneglycolasrawmaterialsbypolycondensation,thetwohydroxylendgroupsofpolyester.2,thepolyesterinthe***(2,4toluenedi-isocyanate),chainextenderfromprepolymer.Prepolymervacuum,withtheexceptionofthebubble.4,byaddingacuringagentMOCA(3,3-dichloro-4,4-diaminodiphenylmethane)Stircasttopresetthec***ityofagoodstronglayer.Afterheating,curing,demoldingderivedproducts.MoldingmethodThemainrawmaterialforrubberneoprene,stronglayerofcommonlyusedwireropeoraramidrope.Therequirementsofastrongrope,includinghightensile,lowelongationandheatdistortion.BRECO同步带PU同步带同步齿形带的制造工艺模压法的硫化方式有以下两种：(1)铁箍加压硫化适用于用模具法成型的半成品，通过铁箍来加压，然后送硫化罐或平板压机硫化。(2)胶套硫化适用于成型鼓成型的带胚。将带胚连同成型鼓套上胶套，送入硫化罐，内外同时加压、加热。***阶段0.3至0.4MPa蒸汽压，保持2至3分钟；第二阶段再增压到0.8至1MPa，持续到规定的硫化周期。浇注法采用聚酯型聚氨酯为主体材料，通过四个步骤完成。1、以己二酸和乙二醇为原料，进行缩聚，得到二羟端基聚酯。2、在聚酯中加入***(2，4．甲本二异***酸酯)，扩链而成预聚体。3、对预聚体抽真空、除泡。4、加入固化剂MOCA(3，3-二氯，4，4-二氨基******)后搅拌均匀，浇注到已预置好强力层的模腔中。经过加热、固化、脱模而得成品。模压法主要原料橡胶以氯丁橡胶为主，强力层常用钢丝绳或芳纶绳。对强力绳的要求包括高定伸、低伸长及热变形小。成型分模具法及成型鼓法两种：1、模具法分五步，***步贴包布(以45度斜裁搭接)；第二步，嵌埋齿条；第三步，缠绕线绳，单根张力要求达到78至100N；第四步，贴胶片，以0.5毫米厚的胶片多层包贴到规定的厚度为止；第五步，加装外箍，进硫化罐硫化。2、成型鼓法在单鼓成型鼓(兼作硫化鼓)上进行。先将挂胶布贴在成型鼓上，缠绕线绳，并贴上一层胶布，完成带胚成型。)