注塑加工產品的過程中實際上有很多步驟需要做好,比如說產品(pǐn)注塑加工時的填充工作。這可是加工過(guò)程中非常重要的一個步驟,填充分為高速填充和低速填充兩種(zhǒng),當(dāng)然(rán)選擇高速還是低速填充是要根據產品來決定的。
In fact, there are many steps to be done in the process of injection molding products, such as the filling work of injection molding products. This is a very important step in the processing process, filling is divided into high speed filling and low speed filling two kinds, of course, choose high speed or low speed filling is to decide according to the product.
注塑加工的高速填充時剪切速率高,塑料因剪切變稀(xī)而粘度降低,降低了整體流(liú)動阻力;局部粘性加熱效應也會降低凝固層的厚度,因此在流動控(kòng)製階段,填充行為(wéi)往往取決於待填充體積的(de)大(dà)小。即在流動控製階段,由於高速充填,熔體的剪切變(biàn)薄效應(yīng)往(wǎng)往較大(dà),薄壁的冷卻效果不(bú)明顯,因(yīn)此以速度效(xiào)應為(wéi)主。
Injection molding process of high speed filling shear rate, plastic shear thinning and viscosity reduction, reduce the overall flow resistance; The local viscous heating effect also reduces the thickness of the solidified layer, so the filling behavior often depends on the volume to be filled in the flow control stage. In other words, in the flow control stage, due to high-speed filling, the shear thinning effect of melt is usually large, while the cooling effect of thin wall is not obvious, so the velocity effect is mainly.
注塑加工的低速填充時,熱傳導控製低速灌裝時,剪切速率低,局部粘度高,流動阻力大。由於熱塑性塑料的補充速度慢,流動慢(màn),導熱效果更明顯,熱量(liàng)很快(kuài)被(bèi)冷模壁帶走。結合較小的粘性加熱量,固(gù)化(huà)層較厚,這進一步增加了較薄壁處的流動阻力。
Low speed filling of injection molding process, heat conduction control low speed filling, low shear rate, high local viscosity, flow resistance. Because the thermoplastic supplement speed is slow, the flow is slow, the heat conduction effect is more obvious, the heat is quickly taken away by the cold mold wall. Combined with less viscous heat, the curing layer is thicker, which further increases flow resistance at thinner walls.

濟南注塑加(jiā)工提醒大家,填充步驟的進行很多時候會出現(xiàn)問題,比如(rú)說(shuō)填充(chōng)不足的現象存在(zài),這個時候會導致注塑加工製品(pǐn)出現質(zhì)量不合格,這往往會給注塑加工廠造成不小的經濟損失,因(yīn)此注塑操作(zuò)人員,需要懂得如何做好填充不(bú)足時候的解決方法才行。比如:
Jinan injection molding processing, the steps to a lot of time there will be a problem, such as insufficient filling phenomenon exists, this time can lead to injection molding products processing appear to be of poor quality, it tends to give injection molding processing factory causing economic losses, so injection operation personnel, need to know how to do when insufficient filling solution. Such as:
當料筒末端儲存(cún)的材料過多時,螺杆在(zài)注射過程中會消耗(hào)額外的注射壓力來壓縮和推動儲存在料筒中的多餘(yú)材料,從而大大降低塑料(liào)進入模具的(de)有效注射壓力腔,使產品(pǐn)難以填充(chōng)。這個時候(hòu)就需要操作人員冷靜思考如何進行處理了。
When there is too much material stored at the end of the barrel, the screw will consume extra injection pressure during the injection process to compress and push the excess material stored in the barrel, thus greatly reducing the effective injection pressure cavity of plastic into the mold, making the product difficult to fill. At this time, the operator needs to think calmly about how to deal with it.
注塑加工產品時如何(hé)進行填充?這個問題在上述已經講解完畢了,操作(zuò)人員在進行這一步驟之前應當(dāng)做好相應的(de)檢查工作以及(jí)相關問題的應對方案才行,這樣才(cái)能大大降低產品質(zhì)量不行的概(gài)率。更多內容就來網站
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How to fill the product when injection molding? This problem has been explained in the above, the operator should do a good job in the corresponding inspection work and related problems before this step, so as to greatly reduce the probability of product quality is not good. More content to the website www.lsjtcyjt.cn consultation!