Quality controll for custom metal parts

We dedicate to provide good quality products only to Customer. We well understand that the quality is the core principal to get survival under fiercely Market competition.

1)Strictly raw material inspection
2)Routing Inspection and random inspection during production.
3)Complete inspection before shipping
4)Good Inspection tool to be designed.
5) good trained staff
6) Advanced inspection equipment.
Such as:
> Mitutoyo Digital Micrometers
> Height Gages & Verniers
> Starrett Gage Blocks
> Granite Surface Plate
> Micrometers
> Vernier Calipers
> Inside Micrometers
> HardnessTester
> Salt spray test lab
> Others

From the beginning, the project manager will try to deeply understand your quality requirements, and customize a quality control system that helps our production achieve your product quality instructions.

Inspection standard for Metal parts

Linear size test

Appearance inspection
Inspection method
Inspection methods for products and raw materials are visually inspecting under the following conditions. If you need to use the film, you can use 10 times magnifying glass. Determine the apparent defects according to the corresponding acceptance criteria.

Dimension inspection
Determination of the environment
The standard condition size measurement environment should meet the environment temperature 20 + 8 C, the relative temperature is 50 + 15%. The determination of the front products should be placed in the proper time in this environment to ensure that the inspection conditions of the products meet the standard requirements.
General conditions, size, measurement, environment, temperature 5~35, 45~85%

Tolerance regulation
The dimensional tolerance of products and parts is controlled by the customer’s requirements; the thickness tolerance of raw materials and materials is referred to the gauge of common material thickness tolerance; the size specifications of common miscellaneous materials refer to the list of miscellaneous materials.

Inspection apparatus
According to the accuracy of the measuring objects, the testing instruments are used in a reasonable and economical way, and they are specifically referred to “the table of selection of common size inspection instruments”, and are properly used and maintained according to the related work guidance.

Inspection method
According to the relevant process and inspection instructions.

Tolerance check
Determination of the environment
Same as Dimension inspection

Tolerance regulation
The tolerances of product and part shape and position are controlled according to customer’s requirements

Testing apparatus
According to the accuracy of the measuring objects, the testing instruments are used in a reasonable and economical way, and they are specifically referred to “the table of selection of common size inspection instruments”, and are properly used and maintained according to the related work guidance.

Definitions and inspection methods for common geometrical tolerances (accessories)

Mechanical properties inspection
Scope of application
It is suitable for checking the mechanical properties of shrapnel, contact piece hardware and its raw materials.

Objective
Such hardware products as shrapnel and contact piece need not only meet the dimensional requirements of the drawing design, but also need certain mechanical properties such as elasticity, strength and so on. In accordance with the characteristics of the products used in the division, this standard is formulated to standardize the inspection items, methods and criteria for the mechanical properties of such products.

Hardness test
Refer to “heat treatment standard” hardness test, and provide for basic inspection items.

Elastic test
Fatigue test, impact test
Bending test
Surface crack inspection

Reporting:
All QC checks are documented and are available to customers on request.