Quality Inside Manufacturing

  In Previous blog we have learnt "What is a Histogram? Meaning, Example and Uses in Quality Control"  If you have not learnt go with below link -  Introduction to Scatter Diagram in Quality Control In the EMS industry, maintaining product quality is not just important — it is essential. From PCB assembly and soldering to testing and final inspection, every process must meet strict quality standards. To control defects and improve process performance, industries use the 7 QC (Quality Control) Tools . One of the most useful and easy-to-understand tools among them is the Scatter Diagram . A Scatter Diagram helps quality engineers and manufacturing teams understand the relationship between two variables. It is widely used in problem-solving, root cause analysis, and process improvement activities. What is a Scatter Diagram? A Scatter Diagram , also known as a Scatter Plot , is a graphical tool used to show the relationship between two sets of data using dots plotted...

In Previous blog we have learnt " Fishbone Diagram (Ishikawa Diagram): Meaning, 6M Method & Example ". If you have not learnt go with below link -  Introduction to Histogram A  histogram  is  one of the most powerful  Tools  used by quality engineers to understand process variation. Whether you are measuring solder paste thickness, component dimensions, or voltage output, a histogram you visualize how your data is distributed and weather your process is under control. For Example -  If you measure the thickness of solder paste on 50 PCBs. A histogram shows weather most solder paste thickness values are close to the target of 0.20mm. if most values are outside the acceptable range, it indicates issues like improper stencil, incorrect squeegee pressure, or solder paste quality problems. What is a Histogram in Quality Control? A histogram is a graph made of bars , where: Each bar represents a range of values (called a bin) The height of th...

 In Previous blog we have learnt " What is a Pareto Chart and How It Helps in Quality Improvement".  If you have not learnt go with below link -  Fishbone Diagram (Ishikawa Diagram) – A Simple Guide to Finding Root Causes The Fishbone Diagram is one of the 7 Quality Control (QC) Tools used to analyze problems in a structured way. It is also called the Ishikawa Diagram , named after Kaoru Ishikawa , a Japanese quality expert who developed this method. This tool helps teams identify the real root cause of a problem instead of just treating the symptoms . The diagram looks like the skeleton of a fish , which is why it is commonly known as a Fishbone Diagram . What is a Fishbone Diagram? A Fishbone Diagram is a cause-and-effect analysis tool used to identify all possible reasons behind a problem. It helps teams: Identify possible causes of an issue Organize causes into logical categories Analyze the root cause , not just the visible problem Improve product or process qua...

In Previous blog we have learnt " What is a Check Sheet and How It Helps in Manufacturing Quality". If you have not learnt go with below link -   A Pareto Chart is one of the 7 Basic Quality Control (QC) Tools used in quality management. It is a powerful graphical tool that helps identify the most significant problems by prioritizing them based on frequency or impact. History of Pareto-Chart : The Pareto chart is based on the work of  Vilfredo Pareto , an Italian economist. In the late 19th century, Pareto observed that about  80% of the land in Italy was owned by 20% of the population . This observation later became known as the  Pareto Principle  (or the 80/20 rule). However, the actual  Pareto chart  (the bar chart combined with a cumulative line graph) was developed later by  Joseph M. Juran , a quality management pioneer, who applied Pareto’s principle to quality control in the 20th century. So; Vilfredo Pareto  – Discovered the 8...