德馬格注塑機(jī)工藝參數(shù)優(yōu)化的步驟指導(dǎo)(文件)
【正文】 重量 1重量2重量3重量4重量5平均重量時(shí)間保壓重量1重量2重量3重量4重量5平均重量時(shí)間保壓所需的保壓時(shí)間s 步驟 3 優(yōu)化注射速度采用多級(jí)注射曲線, 使注射行程最后的1020% 采用逐步降低的注射速度. 每次更改注射速度, 必須重新建立轉(zhuǎn)壓點(diǎn). (注意每次保壓和保壓時(shí)間都設(shè)定為0.)連續(xù)取16模, 計(jì)算出標(biāo)準(zhǔn)偏差. 打印:頁(yè)面 24 MWE 使用和沒(méi)使用多級(jí)保壓時(shí)的曲線頁(yè)面 26 多級(jí)注射頁(yè)面50 工藝過(guò)程統(tǒng)計(jì)為什么轉(zhuǎn)壓點(diǎn)要更改?注射壓力發(fā)生了什么?為什么在數(shù)社的末端采用逐步降低的注射速度是有用的?步驟 3 結(jié)果輸入實(shí)際值平均值范圍最小最大沒(méi)有保壓時(shí)的重量采用保壓的重量填充百分比%標(biāo)準(zhǔn)偏差 (16 模)g料墊 (平均值和范圍)預(yù)塑時(shí)間 (平均值和范圍)螺桿停止位置(平均值和范圍)注射時(shí)間 (平均值和范圍)注射壓力峰值, P inj. max轉(zhuǎn)壓壓力, PN press.轉(zhuǎn)換位置 步驟 4 采用正確的螺桿轉(zhuǎn)速Select the correct, optimum screw speed for the material being processed (see notes, Section 5 ). Use this single speed for the whole plasticising strokeSet a back pressure of 5 to 10 bar (hydraulic).Readjust dosing stroke to achieve 9598% fillTake sixteeen consecutive mouldings and determine the standard deviation of the weights.Print out:Page 50 Process Statistics Why is it important to use the manufacturer’s remended screw speed?STEP FOUR RESULTSInsert actual values in the relevant boxesMean valueRangeminmaxWeight without holding pressureWeight with holding pressurePercentage fill%Standard deviation (16 shots)gMelt cushion (mean and range)Dosing time (mean and range)Screw stop position (mean and range)Injection time (mean and range)Peak injection pressure, P inj. maxInjection pressure at changeover, PN press.Changeover stroke STEP FIVEOptimise screw speed and backpressure profileUse the Dosing Profile page to slow down the screw rotation speed for the last 10% of the metering stroke.Readjust dosing stroke to achieve 9598% fillTake sixteeen consecutive mouldings and determine the standard deviation of the weights.Print out:Page 21 Dosing ProfilesPage 50 Process StatisticsWhat has happened to the Dosing Stop position?STEP FIVE RESULTSInsert actual values in the relevant boxesMean valueRangeminmaxWeight without holding pressu
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