成型工藝流程及條件介紹(注塑技術(shù)英語(yǔ)大全)-展示頁(yè)
2024-08-21 01:12本頁(yè)面
【正文】 distance setting differs depending on the volume of product and usually it can be set 1/3 of mold opening 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%. Lowpressure section: Mold closing sets lowpressure when plates meeting. This position is set to the data of machine screen on this time. This point is the gage of the data. Data lower the point there is no highpressure. Data higher the point there is highpressure easily. It set speed within 1525% and pressure within 12% depending on type within 12% depending on type of injection molding machine. Highpressure section: To normal injection molding machine, highpressure position had been set before they were sent to customer. It can not be modified. For example highpressure position of CHENHSONG machine is speed of highpressure section is about 3035% and higher than that of lowpressure. The pressure is up to mold, it can set within 5585% For fullplate mold, it’s eject air well, it can set pressure 55% .If mold has a lot of slides and flash rate high in production, pressure can set 90%. Heating technique parameter setting 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. Nozzle temperature setting should low if product line. If resin material such as ,一般出于對(duì)機(jī)臺(tái)油路中的油封保護(hù)需要,油溫最好能控制在40度60度,以免油封長(zhǎng)期高壓而變化,縮短使用壽命,造成成型不穩(wěn)定. Injection and plastic Technique parameter setting Injection 原料 Name熔點(diǎn)℃ Molding Temperature(’c)分解溫度℃ Mold Temperature(‘c)干燥溫度℃ 注射是把塑料原料經(jīng)加熱后射進(jìn)模腔的過程,它一般可分為第一級(jí),第二級(jí),第三級(jí),第四級(jí)及保壓幾段: ,當(dāng)然也可以依據(jù)公式來計(jì)算,如公式: L=Si=Vi/ Si:注射行程。 L: injection stroke Si: injection stroke Ds:螺桿直徑。 Vi: injection volume of theoretical Ds: diameter of screw 0. 785: value ofΩ/4. But it cost a lot of time to produce one product if every time molding parameter is setting by calculation. Step 2 inject 2/3 of product. It can lower 2/3 of product according to requirement of product. For example to pr
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