The Benefits of Statistical Process Control


Reading time ( words)

Statistical process control (SPC) is a method of quality control which employs statistical methods to monitor and control a process. This helps to ensure that the process operates efficiently, producing more specification-conforming products with less waste [1]

The concepts of statistical process control were initially developed by Dr. Walter Shewhart of Bell Laboratories in the 1920s, and were expanded upon by Dr. W. Edwards Deming, who introduced SPC to Japanese industry after WWII. After early successful adoption by Japanese firms, SPC has now been incorporated by organizations around the world as a primary tool to improve product quality by reducing process variation [2].

The use of statistical process control (SPC) was initially ignored in North America for quite some time, but in the 1960s and moving forward, SPC—using control charts to control every step of a process—became an integral part of any manufacturing process. Dr. Robert Deming was the evangelist who advocated the concept of eliminating final inspection requirements if every step in the process was monitored. At the beginning, this program met management head-winds, but over time, the concept, when adopted from senior management down through an organization, has proven to reduce costs and improve quality.

From our experience, and with the development of a host of modern electronic innovations, we have witnessed this program successfully interfaced directly from the machine to an engineer’s computer and stored as history to the cloud.

The Bürkle LFC roller coating machine is another example of how a coating process can be monitored in “real time.” 

To read this entire article, which appeared in the February 2021 issue of PCB007 Magazine, click here.

Share




Suggested Items

EIPC Summer Conference 2022: Day 2 Review

06/29/2022 | Pete Starkey, I-Connect007
Örebro, Sweden on June 15 brought a bright and early start to Day 2 of the EIPC Summer Conference for those who had enjoyed the previous evening’s networking dinner, but had resisted the temptation to over-indulge or to carry on their long-awaited catch-up conversations with old friends into the small hours. All but a few were in their seats for 9 a.m., awake and attentive for Session 4 of the conference, on the theme of new process technologies, moderated by Martyn Gaudion, CEO of Polar Instruments.

Technica Heats Up ROI Discussion

05/17/2022 | I-Connect007 Editorial Team
The I-Connect007 Editorial Team speaks with Technica’s Frank Medina, Ed Carrigan, and Jason Perry about trending hotspots that provide the PCB fabricator a high return on investment (ROI). A theme that carries throughout the conversation is that traditional methods for calculating ROI are being replaced by models that include more qualitative factors.

Addressing the Gap in Process Performance

04/26/2022 | Nolan Johnson, PCB007
The first steps in process improvement are to determine what the gap is and why it happens. Having a process is not sufficient; the process needs to be effective as well. For those responsible for creating and maintaining processes, the ultimate goal is to create a procedure that becomes self-perpetuating, that seeps into the fabric of the company’s culture. For better or worse, plenty of procedures do indeed become ingrained in company culture. How does one go about ensuring that company culture is loaded with effective processes that deliver a positive outcome? That is the question, to be sure.



Copyright © 2022 I-Connect007. All rights reserved.