1、1NYPRO SHENZHENSPC ii. The plotted X or R is outside the UCLX,LCLX or UCLR range.绘制出来的 X值超出 UCLx ,LCLx 或 R超出 UCLR值的范围。 4.1.2 ATTRIBUTE DATA(P-Chart):特性数据( P-Chart):This is data collected from inspecting a part per defined workmanship criteria. The part either passes or fails to meet this criteria.指根
2、据已确定的工艺标准检查产品时收集的数据。这个产品可以符合或不符合标准。 6NYPRO SHENZHENSPC & AQL TRAINING PROGRAMSPC & AQL 培训 内 容编写：FRED ANN 2000-07-194.1.2.1 The P-Chart shall be used to monitor critical attributes, chosen as a result of Cpk analysis or attributes which, have gone out of specification resulting in the production of n
3、onconforming product or caused unnecessary downtime P-Chart 应用于监测关键特性，选择它的原因在于 Cpk分析或监测曾经超出规定的特性会导致在生产中产生不合格产品或不必要的停工。4.1.2.2 A sample of 20 units shall be inspected every 4 hours (unless otherwise stated) for all the attributes outlined on the P-ChartThe number of faults found shall be recorded and
4、 P (defectiverate) plotted on the P-Chart .应每 4小时抽取 20个样品作为一个样板检查(除非另有说明)。在 P- Chart 上列出所有的特性，记录下坏品数并把 P(坏品率)绘制在 P-Chart上。4.1.2.3 After 20 or more samples have been inspected, P( mean of defective rate )and the UCL (Upper Control Limit)shall be calculated and plotted on the P-Chart .检查了 20组或以上样板后，计算
5、 P(坏品率平均值)和 UCL(控制上限)并绘制在这个表上。Remark: 1.USL(Upper Specification Limit)and/or LSL(LowerSpecification Limit)would be used for plotting the chartbefore the initial 20 samples data are collected.备注： 在收集到起初 20个样板值之前，把上限规定值和/或下限规定值绘制在这个图表上。2.Recalculat the control limits as/when necessary.若有需要，可重新计算控制限。4.
6、2.2.4 CALCULATIONS:7NYPRO SHENZHENSPC & AQL TRAINING PROGRAMSPC & AQL 培 训 内 容编写：FRED ANN 2000-07-19计算：Calculate and plot the defective rate(P)in each sample.计算并绘制出每个样板的坏品率(P)Total number of defectives(X) P= - The number of units in the sample(n) 坏品总数(X)P= -这个样板的抽样数(n)After the first 20 or more sampl
7、es , calculate the average P(P).在第一批的 20组或以上样板后，计算 P的平均值(P)XP=-NCalculate and plot the Upper Control Limit (UCL)计算并绘制上限(UCL) P(1-P)UCL = P + 3 n 4.1.2.5 OUT OF CONTROL : As samples are measured and plotted on an on-going basis, the process is deemed to be Out of Control if the plotted P is outside U
8、CL range. 失控：测量样板和绘制图线，如 P值超出 UCL的范围应视为“失控”。 4.1.3 Corrective Action on “Out of Control”“失控”的纠正措施QC shall inform production department (on duty supervisor/foreman)ifFind “Out of Control”. The relevant supervisor/foreman shallinvestigate the cause and take appropriate corrective action timely.The cor
9、rective action taken shall be recorded on the backside of the Control chart and signed by the Supervisor/Foreman and approved by QA Inspector/Supervisor. (If necessary, Engineering may be required for8NYPRO SHENZHENSPC & AQL TRAINING PROGRAMSPC & AQL 培训 内 容编写：FRED ANN 2000-07-19problem identificatio
10、n and solution).如果发现“失控”，QC 应通知生产部门(当班主管/领班)。相关主管/领班应及时调查原因和采取适当的纠正措施。所采取的纠正措施应记录在控制图的背面，主管、领班、QC、 QC 主管要签字。(如有必要，工程师应确认和解决问题)4.1.4 Quality Department keep SPC control charts for reference.品控部保存相关 SPC控制图。4.1.5 Control Chart Implementation Cycle管制图实施循环图Sampling抽取样板CA对策实施Inspection检验Analysis Process 原
11、因分析 Normal制程正常Control ChartProcess Abnormal 将结果绘管制图制程异常Out of Control?Yes 是否失控 No9NYPRO SHENZHENSPC & AQL TRAINING PROGRAMSPC & AQL 培训 内 容编写：FRED ANN 2000-07-194.2 AQL Sampling PlanAQL 抽样计划a). NYPRO-SHEN ZHEN select and use GB2828 sampling standard(unless specially requested by customer for other st
12、andard).耐普罗深圳选用 GB2828 抽样标准(除非客户有其它标准要求).b).In accordance to GB2828, General Level II or S-3 Sampling Plan.AQL Standard (Reference to per Quality Control Plan)按 GB2828 二水平或 s-3抽样计划。AQL标准(参照质量控制计划)。c). Sampling plan table see attached list 2 .抽样表见附录 25. RECORDS记录5.1 SZ-220-QA-001A X-R CHART5.2 SZ-220-QA-001B P-CHART
