成型工藝流程及條件介紹(注塑技術(shù)英語大全)-免費(fèi)閱讀
【正文】 Cure time: Cure time affects molding cycle. Longer cure time, longer molding cycle, lower production quantity. So it sets cure time short on condition that product molding succed and can’t deformation.. Molding time setting Knocking out includes two steps, Step1 section setting midspeed, knocks product out partly step2 section setting midpressure and midspeed . Depending on different product, midpressure and midspeed sets within 3555% but lowspeed can set 5%. Distance of knocking out longer 12cm than the vertical thickness of product. In plastic step sucking back is very important too. Sucking back include front sucking back and back sucking back It setting sucking back to prevent flow and line. It sets sucking back speed and pressure within 2050% and distance within 25cm. TOO long distance make cyclinder reserve air and cause bubble at next molding. Step4 section: Some injection machines have step5,step6 which are same as former molding speed and pressure this step should diminish and inject once more. 0. 785: value ofΩ/4. Ds:螺桿直徑。 Mold Temperature(‘c)干燥溫度℃ Injection The proper temperature setting differs depending on type of resin material, but it must be abide by a rule that temperature setting should diminish in step from nozzle to feeding resin material position. In midspeed section: Mold closing speed changes into midspeed after highspeed section finish. Midspeed start position is where two plates meet (include threeplate mold and twoplate mold ) Distance of midspeed is up to distance of two plates plate it speed within 3050% and pressure 2045%.成型工藝流程及條件介紹(注塑技術(shù)英語大全)成型工藝流程及條件介紹 . 成型工藝參數(shù)的設(shè)定須根據(jù)產(chǎn)品的不同設(shè)置. Molding steps: mold opening/closing, heating injection and knocking out. 低壓高壓速度 Mold closing parameter setting ,如果是平面二板模具,快速鎖模段可用較快速度,甚至于用到特快,當(dāng)用到一般快速時(shí),速度設(shè)到5575%,完全平面?？稍O(shè)定到8090%,如果用到特快就只能設(shè)定在4555%,壓力則可設(shè)定于5075%,位置段視產(chǎn)品的深淺(或長(zhǎng)短)不同,一般是開模寬度的1/3. 加熱工藝條件設(shè)定 Pump turning on temperature is different depending on type of injection molding machine. To protect oil seal of machine it set oil temperature within , If oil seal work on condition that high pressure and damaged It’s work time will be shorter, it can cause molding stable.第三節(jié)注射及熔膠(加料)工藝條件設(shè)定 Melt’s成型溫度℃ Step l injec
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