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改善吹塑件壁厚均勻性的幾種方法
2021/12/11 2696
1.異型口模口模異型化是指擠出機頭的口模或芯棒局部位置開設凹槽，增大對應制件拐角處的口模間隙，以增加型坯局部位置的壁厚，得到異型化的型坯，彌補吹脹比不一致造成的徑向壁厚不均，從而得到壁厚較為均勻的制...
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什么是聚丙烯？它與熱塑性塑料相比有什么優(yōu)勢？
2021/12/11 3119
聚丙烯(polypropylene)為丙烯的聚合物。英文縮寫為PP。聚丙烯原料豐富，綜合性能優(yōu)良，容易加工成型，生產成本較低，所以用途廣泛。其缺點是低溫韌性較差，脆折溫度高(8℃左右)，且易老化。近年來通過共聚合和共混...
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什么是ABS塑料？它的特點有哪些？
2021/12/11 2994
ABS塑料是一種用途極廣的熱塑性工程塑料，是目前產量最大，應用最廣泛的聚合物。ABS是丙烯腈、丁二烯和苯乙烯的三元共聚物，其英文名稱是:Acrylonitrile Butadiene Styrene，Acrylonitrile(丙烯腈)、Butadiene(丁...
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如何提高塑機螺桿的工作壽命?
2021/12/11 2249
注塑螺桿是長時間在高溫、高壓、高的機械扭力及高的磨擦環(huán)境下進行工作的。前幾個因素是工藝條件所需，而磨擦造成的損耗則不可避免。一般螺桿都進行過表面氮化處理，以提高表面硬度，亦即提高抗磨損能力。但是如...
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塑料吹膜生產時需考慮的溫度、厚度、螺桿轉速各方面的參數詳解！
2021/12/11 3109
吹膜生產中溫度對質量的影響塑化是否完全和均勻, 泡形是否穩(wěn)定, 溫度是主要工藝條件之一。在生產PE聚乙烯吹塑薄膜時, 應根據原料的熔體指數( M I ) 和不同的產品規(guī)格, 選擇不同的溫度, 一般熔體指數越大,加工時...
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螺桿的用途之描述
2021/12/11 2205
固態(tài)塑料原料自進料漏斗進入螺桿螺槽（screw channel）內，由于螺桿高速旋轉而與熔膠筒（barrel）產生剪切效應作用，使塑料原料混煉并沿著螺桿螺槽輸送，使固態(tài)塑料原料受到熔膠筒外側之電熱片加熱與螺桿產生的剪...
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什么叫低煙無鹵塑料
2021/12/11 2933
指不含鹵素(F、Cl、Br、I、At)、不含鉛鎘鉻汞等環(huán)境物質的膠料制成的燃燒時不會發(fā)出有毒煙霧(如：鹵化氫、一氧化碳、二氧化碳等)的環(huán)保型電纜。 ● 其中鹵素指針為：所有鹵素的值≦50PPM(根據法規(guī)PREN 14582) ● 燃...
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常見螺桿種類與形式
2021/12/11 2519
注塑機螺桿工作惡劣，要承受高溫高壓而且頻繁啟動。 1、常規(guī)注塑螺桿：一般的注塑機用一要標準的中徑螺桿，再配兩根高低壓的常規(guī)螺桿，可適用于范圍較廣的通用塑料和工程塑料的加工。這種螺桿也是三段式：加料段...
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針對不同原料應該如何選擇螺桿？
2021/12/11 2700
一．PC料（聚碳酸酯）特點： ①非結晶性塑料，無明顯熔點，玻璃化溫度140°～150℃，熔融溫度215℃～225℃，成型溫度250℃～320℃。 ②粘度大，對溫度較敏感，在正常加工溫度范圍內熱穩(wěn)定性較好，300℃長時停留基本不分解...
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塑料擠出機螺桿和機筒的損壞原因及修復方法
2021/12/10 2934
螺桿和機筒這兩個零件的組合工作質量，對物料的塑化、制品的質量和生產效率，都有重要影響。它們的工作質量與兩個零件的制造精度、裝配間隙有關。當兩零件磨損嚴重、擠出機的產量下降時，就應該安排對螺桿、機筒...
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Evoh材料認識
2024/06/04 914
Evoh是什么材料呢？作為非專業(yè)人士來說，可能對此并非很了解。不過別急，下面就讓我來為大家簡單介紹下。 Evoh是一種特殊的材料，是乙烯-醋酸乙烯共聚物的縮寫，也被稱為EVOH。它是一種無色透明的樹脂，在工業(yè)和...
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杰德機筒螺桿加工方法簡介
2024/01/19 1575
螺桿機筒是許多機械設備中的重要零部件，廣泛應用于化工、食品、制藥和塑料等行業(yè)。螺桿機筒的加工工藝對于其性能和使用壽命具有重要影響。本文將詳細介紹螺桿機筒的加工工藝。一、確定規(guī)格參數在開始加工機筒...
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公司簡介視頻
2023/10/06 1541
https://jed-machinery.cn/32aecb7063e971eebfd90675a0ec0102/cfaf1417bc768cf40ce83294ea0ceb84-ld.mp4 舟山市杰德機械有限公司位于舟山市定海城西工業(yè)區(qū)振興中路17號，是一家專業(yè)研發(fā)、設計、制造螺桿、機筒的...
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橡膠螺桿機筒的設計制造中如何確保擠出物的穩(wěn)定性和流變特性
2023/09/05 1580
橡膠擠出螺桿機筒的設計制造中，要考慮擠出物的穩(wěn)定性，這主要包括兩個方面：一是擠出物在機筒內的流動穩(wěn)定性，二是最終擠出成型的形狀和尺寸的穩(wěn)定性。首先，對于擠出物在機筒內的流動穩(wěn)定性，主要通過合理設...
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螺桿機筒制造過程
2023/08/25 1623
屏幕前的您是否曾經好奇過，螺桿料筒是如何被制造出來的？今天，我將帶您了解螺桿料筒的加工工藝流程，讓我們一起探索這個神秘的世界！首先，我們要知道，螺桿料筒的制造需要經過多個步驟。根據不同的要求和規(guī)...
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耐玻璃纖維耐磨注塑機螺桿的設計
2023/08/09 1554
注塑機螺桿的設計需要考慮到多個因素，以實現耐玻璃纖維耐磨。以下是一些設計考慮： ⑴ 材料選擇：選擇具有良好耐磨性和耐腐蝕性的材料，如38CrMoAlA、SKD61等。 ⑵ 直徑和長度：根據注塑機的型號和注塑件尺寸確定...
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