Evaluate batch consistency by comparing raw materials, melt batches, sampling, composition, particle size, density, flow, packaging and results in the customer’s process. Also control changes to production and test methods.
Interpret the relationships between variables, not a single parameter
Evaluate powder batch consistency from critical quality characteristics, sampling, testing, packaging and change records.
Define critical quality characteristics first
Different customers focus on different key indicators. While MIM may focus more on particle size, feedstock and shrinkage, pressing and sintering also focuses on filling, compressibility, green body and porosity.
Sampling method determines data representativeness
Powders may separate or agglomerate during transportation, storage and handling. Before comparing batches, the sampling location, quantity, sampling and detection methods should be fixed.
Changes must be traceable
When there are changes in raw materials, equipment, atomization, sieving, mixing, testing, packaging or outsourcing that affect the product, they should be recorded and communicated as agreed by both parties.
Discuss your powder project
Share the process step, operating conditions and part result you want to improve.
- Current material, powder or part issue
- Process step and observed symptom
- Available particle-size, composition, dimensional or performance data
- Equipment, process conditions and desired outcome
Technical references for this page
These references explain materials, processes or test methods. Third-party product data does not represent Tongcheng product specifications.