The FMEA process assumes that the designed products will meet the design requirements.
Potential failure modes caused by design defects may also be included in PFMEA, and its consequences and avoidance measures are included in PFMEA.
Process FMEA does not rely on product design changes to overcome process defects, but also considers product design features related to planned manufacturing or assembly processes. To ensure that the products meet the requirements and expectations of customers to the greatest extent.
Work in the initial stage of process FMEA
At the beginning of PFMEA, the engineer in charge of the process must first make clear the process intention and list the things to be done in the process. Don't want to do anything?
PFMEA should start from the whole process flow chart.
The flow chart shall identify the product/process characteristics related to each job.
If possible, we should also determine the impact consequences of some products from the corresponding DFME.
A copy of the flow chart used for PFMEA preparation shall be attached to PFMEA.
Process FMEA quality objectives
The main goal of PFMEA is to promote process improvement and emphasize solutions to prevent errors.
PFMEA provides implementable measures and activities for all high-risk failure modes reviewed and identified by FMEA team.
The trial production and production control plan should consider the failure mode from PFMEA.
PFMEA is combined with process flow chart and control plan, and is consistent. If DFMEA is used in the analysis, PFMEA needs to consider DFMEA.
Major "lessons" in the past (such as high claims, recalls, unqualified products, customer complaints, etc.). ) is used as an input to the failure mode.
In order to identify suitable key characteristics, it can be used as input to the key characteristic selection process.
Start PFMEA before production tooling preparation and complete PFMEA before production tooling completion, which can effectively affect product and process design.
During the whole analysis process, appropriate personnel participated in and received FMEA training as members of PFMEA team.
Fill in PFMEA document, including measures and actions and new RPN value.
PFMEA should be carried out as soon as possible, and suggested measures should be put forward and implemented as soon as possible.