Pre-Production Part Approval Process (PPAP) is a new requirement is flowed through a variety of industrial customers, their components and provider of process. The Automotive Industry Action Group (AIAG) has developed this requirement for the automotive industry, in its original QS-9000, the automotive version of ISO-9000 quality system. While the system QS-9000 is now outdated, making the new version of ISO / TS 16949, a prerequisite for a PPAP remains. Other industrieshave captured these concepts and this demand is always greater than many industries are not yet committed to such formalities. Many suppliers, suddenly, that correspond to these new requirements, which are often determined by the number of procedures that have stunned suddenly to face. In truth, the PPAP is not as unbelievable as it sounds in different ways, and offers significant advantages for the company prior to the preparation that one.
A PPAP is simply a series of analysisvarious aspects of a manufacturing process of production. Before the production, the supplier must prove its processes and procedures, tools for the actual production. The PPAP is simply a way to report the results of this testing process for the customer to know the supplier has the ability to produce a quality level of the customer, are necessary. It also shows the recovery techniques are not used in cases where materials discovered during the matchproduction run. This allows the supplier of a zero defects quality approach in its programs. The author has created for the production of this robust manufacturing processes and modules in automotive critical applications that have a zero defect level, the level of care extends to the production of multi-million units a year over several years.
PPAP Quality begins with the planning of production. This begins with a sequence diagram that describesto reach each stage of the process as raw materials to the finished parts are delivered to the customer. Each event passes, the plant from the store and moving to implement the processes must be identified and carried out the checks referred to in this simple, sequential pattern. All procedures for quality assurance, or specific operating procedures, if necessary, in steps, where they can be used are identified.
From the flowchart, a failure of the process of Mode and EffectsAnalysis (PFMEA) is derived. This is done simply by each of the tasks of production and see what can go wrong, because the results if it goes wrong, and what you can do to minimize those risks.
Created using the flowchart of the process and PFMEA, a control plan that can cover every stage of production, as they are checked, and probably most important, such as out-of-compliance responding parties are. It also lists the locations of productionand tools, monitoring tools and other equipment needed to produce some zero defects.
The control plan is in the heart of the PPAP, and if a document is widely used in your shop, the production process. Who assumes the role and has nothing to do with the production must be familiar with this document is to read the document and acknowledge that the ECB, which is produced as the product. In the case of verifications your customersProduction processing, which will definitely ask for the check and ask if any of his steps to see that application.
To ensure that the test methods, as identified in the survey are repeatable and reproducible, has conducted an analysis of the lessons are. This will be a gauge repeatability and reproducibility of analysis or Gauge R & R for short. Requires three inspectors to inspect the properties, the gauge is used to verify to 10 parts of Triseveral times. These results are incorporated into a statistical formula and a simple numerical evaluation of the ability to identify this device. This is for all the different instruments measure the properties of the control plan identifies repeated.
The next phase of PPAP requires preparation of a sample of actual production parts, tooling, run under the same procedures, personnel, production and all other aspects of their planned production.This sampling method is a finite number, something like 300 items in order. These are then analyzed in various ways to run the production meets all the requirements of the customer's request.
The first of these analyzes is the control layout. Generally at least two parts by any other means of cavity (in the case of a piece injection molded plastic) or each assembly machine, each production line, oven or other piece of production machinery, which is fully equipped with every inspectionCharacteristics are identified and controlled. This is known as a layout control, is usually associated with a drawing of annotations to determine which properties were examined.
First, a study process is conducted potentials, selected as important features of a number of these parts of the production, usually 30 or 50 and tested. These are normally fit and important functional properties. It is a dimension of interface, for example, some worked, or something like thatas layer thickness or other characteristics considered important by the customer. Comparing these results are related to a statistical formula, a good reading of the process' ability to produce consistent production is easy to determine.
Doing a PPAP is not only a task in paperwork only makes sense for the client, but a valuable tool used to help with suppliers, potential trouble spots in advance of production. It gives the provider the opportunity to think about how to formallyprocess is possible that problems may occur in future production. There are supervisors and managers to follow a simple route to meet their manufacturing operations. It is also a valuable tool for employee training to make production in the invoice.
