塑料模科学试模法

In-Mold Rheology to Determine Fill Rate

General information:Machine information:

Break Point:

拐点

2.01Procedure:

1.) Load the tool

上模12.) Plot the viscosity vs. shear rate

绘制粘度V剪切率曲线

13.) Once a curve has been created, pick a location at which the curve begins to brea 找出曲线的拐点（趋于平缓部分）

14.) Mark this location in the cell titled 'break point'

标注此位置为拐点 并填入break point表格

7.) Record the 'Fill Time', 'Peak Transfer Pressure' and part weight in spreadsheet alo 记录各个注塑速度对应下的填充时间、峰值切换压力、零件重量；

8.) On successive shots decrease the injection speed in nominal increments 按预定的步长逐步减小注塑速度

9.) Record the fill time, pressure at transfer and weight after every adjustment 记录每一步的填充时间、切换压力和重量

10.) Repeat this procedure until the injection speed is too slow to fill the part 重复上述步骤，直到注塑速度慢到无法充满产品

11.) Calculate viscosity and shear rate (calculations are in the spreadsheet)

计算粘度和剪切率（计算方式见左表）2.) Establish a process the yields a complete part and run tool until it reaches equilibr 热机直到温度稳定

3.) Verify melt temperature but measuring the temperature of an air shot in cycle 通过空射确认熔融温度

4.) Begin by setting pack and hold times to 0 and the injection speed to the machine m 设定保压压力和保压时间为0；注塑速度设为机台最高速；

5.) Next establish the transfer point (1st stage cut-off) that yields a 95%-98% full part(设置转换点为产品饱和度95~98% （一段射较）

6.) Set 1st stage and total injection timer to 10sec

15.) This value should be used as the optimum injection velocity

这个值将作为最优的注塑速度

取点举例：

系列1

uilibrium temperature

hine maximum

part(s)

et along with the corresponding injection speed break (flatten)