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  • Tháng Mười Một 4, 2022
  • Daniel Pham

By Morris Hua – VNO Technical Director

DELIVERY DOCUMENT

CHINA WESTERN ACTIONS RMK
Deliver goods only.  Deliver goods plus quality documents 1. Specified required quality documents in the PO.
2. Acceptance inspection with documents review at first.
 For customer, if quality document is no or not qualified, rejection will be issued directly no matter how good your parts are.

 

GAUGE CALIBRATION

CHINA WESTERN ACTIONS RMK
1.Never calibrate gauges till customer inform parts not qualified.

2.Gauge Calibration is too expensive and waste of time.

All the gauge must be calibrated within a certain period or usage frequency. Keep auditing gauge control procedure & evidence to ensure all involved gauges are within calibration valid time. One time rejection can be worth many years’ calibration.

MATERIAL TRACEABILITY

CHINA WESTERN ACTIONS RMK
We can ensure you the material is the right material, no need to control the traceability, waste of time. Full traceability required, each part can be traced back its unique melt number, Heat number, original mill material certificate, its purpose is for quarantines and recall efficiently. 1, Specify traceability requirements in the PO.
2. Traceability Procedure established by suppliers.
2. On site audit to ensure actions effectively in function.
Recall all the batches or one traceable batch, many companies get huge loss for one failure of traceability.

 

MANUFACTURER PROCESS

CHINA WESTERN ACTIONS RMK
No manufacture process or process as simple as possible. Quality ensured by skilled or experienced workers. Good & detail manufacture process can ensure consistently produced parts no matter who the operator is if only he is qualified to a set standard. 1. Manufacture Process established when sample making.

2. Any change of the process  must be approved from sample under revise process, sometimes by inner system, sometimes by customer.

Process keep revising for competitive and consistence producing. Century enterprise is generated from this system.

 

TOLERANT

CHINA WESTERN ACTIONS RMK
Some part in upper limit, some part in lower limit, you cannot reject my parts within tolerance. A tolerance specified is for supplier to choose a point for consistently producing. Sometimes a poor Cpk can also be lead to rejection. 1. Machining datum must be set up and maintained in strict tolerance to ensure followed dimension’s accuracy.
2. Tooling or cutter’s weariness must be put into consideration when design a machining process.
Consistence requirement will improve the level of a supplier actually.

 

NON DIMENSIONAL FEARTURES

CHINA WESTERN ACTIONS RMK
Dimensional features take high priority, note or remarks not important to put into consideration. Remarks or Notes have the same even more importance than dimensional features, it is directly affect the function of the part. 1, All feature must be included in manufacture process especially non-dimensional features.
2. Inspection plan have the non-dimensional features in FAIR form.
Currently 80% rejection due to non-dimensional features.

 

INSPECTION METHOD

CHINA WESTERN ACTIONS RMK
Randomly pick up gauges to inspect. Consistent gauge should applied during inspection. 1. Gauge used for any features specified in FAIR form.
2. Special gauge like plug gauge, self made gauge be introduced in inspection to improve consistent inspection.
Rejection happen very frequently due to the difference inspection method between customer & suppliers.

 

SUBCONTRACT CONTROL

CHINA WESTERN ACTIONS RMK
Sub-contract suppliers is not me, I cannot control it well, can you anodize or plate the part in your country? Subcontract control is part of manufacture process, accountable by suppliers. 1. Subcontract work must have PO issued, including technique detail specified as a attachment.

2. Sub-contract should be applied to Qualified supplier list

Sub-contract becomes a challenge and main issue during manufacture in past years in China.

 

SURFACE FINISH

CHINA WESTERN ACTIONS RMK
Surface finish is not so important as functional features, we are not producing art work. Parts must maintain its brand new status when acceptance inspection on customer’s site. Rejection will be happened if surface defects found. 1. Manufacture process must have surface control included such as inner transportation between processes.
2. Acceptance inspection have surface finish included.
Good quality not only inner, outlook express also included.

 

PACKAGING

CHINA WESTERN ACTIONS RMK
Packaging is a minor thing compare with machining/plating. Packaging must protect the quality status including surface finish during transportation. 1. Packaging plan must included in manufacture process.
2. Packaging must be inspected and approved before shipping.
Perfect, High value goods become trash when arrived in customer.

 

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