Quality Assurance
Why put up with returns, delays, and shipping mistakes that give you a headache? They disrupt production schedules, damage client relationships, and cost you money.
Aria’s stringent quality assurance procedures guarantee that you’ll always get the parts you ordered.
Manufacturing Standard of CNC Machining
LINEAR DIMENSION
Limits for nominal size
F (fine)
M (medium)
C（coarse)
V（very coarse)
0.5 up to 3
±0.05
±0.1
±0.2
–
Over 3 up to 6
±0.05
±0.1
±0.3
±0.5
Over 6 up to 30
±0.1
±0.2
±0.5
±1.0
Over 30 up to 120
±0.15
±0.3
±0.8
±1.5
Over 120 up to 400
±0.2
±0.5
±1.2
±2.5
Over 400 up to 1000
±0.3
±0.8
±2.0
±4.0
Over 1000 up to 2000
±0.5
±1.2
±3.0
±6.0
Over 2000 up to 4000
–
±2.0
±4.0
±8.0
ANGULAR DIMENSIONS
Limits for nominal size
F (fine)
M (medium)
C（coarse)
V（very coarse)
up to 10
±1º
±1º
±1º30′
±3º
Over 10 up to 50
±0º30′
±0º30′
±1º
±2º
Over 50 up to 120
±0º20′
±0º20′
±0º30′
±1º
Over 120 up to 400
±0º10′
±0º10′
±0º15′
±0º30′
Over 400
±0º5′
±0º5′
±0º10′
±0º20′
Quality Control Measures
ABS resin is a milky white solid with a certain degree of toughness, with a density of about 1.04~1.06 g/cm3. It has strong corrosion resistance to acids, alkalis, and salts, and it can also tolerate organic solvents to a certain extent. ABS is a resin that has good mechanical toughness, wide temperature range, good dimensional stability, chemical resistance, electrical insulation properties and it’s easy to manufacturing.
PMMA, also known as acrylic, is a tough, highly transparent material with excellent resistance to ultraviolet radiation and weather resistance. It can be colored, shaped, cut, drilled and shaped. With its beautiful appearance, it has a wide range of applications in the construction industry.
High-density polyethylene (HDPE) is a white powder or granular product. Non-toxic and odorless, the use temperature can reach 100℃. It does not have the impact strength of LDPE, but it is more elastic. Surface hardness, tensile strength, rigidity and other mechanical strength are higher than LDPE, close to PP, tougher than PP, but the surface finish is not as good as PP.
Nylon 6, also known as PA6, polyamide 6, is a polymer compound. Except for its low melting point and wide process temperature range, its chemical and physical properties are very similar to nylon 66. Among all nylon grades, nylon 6 has the lowest modulus.
Peek polyetheretherketone is a kind of special engineering plastic with high temperature resistance, self-lubrication, easy processing and high mechanical strength and other excellent properties. It can be manufactured and processed into various mechanical parts, such as automobile gears, oil screen, gear shift start plate; Aircraft engine parts, automatic washing machine runner, medical equipment parts, etc.
Polycarbonate is a high molecular weight polymer containing carbonate groups in the molecular chain. It is a tough thermoplastic resin with flame retardancy. Antioxidant. It has excellent impact strength, transparency and optical properties, mechanical properties, and can be molded to tight tolerances. PC has a wide range of applications, and there are a variety of compounds to choose from.
Polypropylene is a silver-white transition metal with a density of 4.5g/cm3. The main features are low density, high mechanical strength, easy processing, and good corrosion resistance.
Polyethylene terephthalate (PET), milky white or light yellow, is a highly crystalline polymer with a smooth and shiny surface. It is non-toxic, tasteless, and has good hygiene and safety, and can be directly used for food packaging. It has excellent physical and mechanical properties in a wide temperature range, and the long-term use temperature can reach 120°C. But it is difficult to mold to very close tolerances.
Preproduction assessment
Our quality control preproduction assessment includes technical and material verification. Our experts evaluate the choice of material, parts structure, and production process. We assess potential risks and determine whether the requirements are achievable during the initial development phase.
- Common applications: Enclosures
Inbound inspection
Verifies that the material is consistent with a production schedule. Material certification is available upon request. It provides detailed information about the grade, heat number, chemical composition, dimensions, and material properties.
- Common applications: Enclosures
In-process quality control
In-process quality control is performed by Aria in compliance with our ISO9001:2015 program. First article inspection is a routine inspection that is completed at the production line every two hours.
- Common applications: Enclosures
First article inspection
Before an injection molding project moves into production, a first article inspection is carried out. First article inspections are also available for CNC machining projects upon request. The first article inspection process includes an in-depth examination accompanied by images of the parts.
- Common applications: Enclosures
Outbound inspection process
Includes a dimensional report and a certificate of proper packaging. Inspection reports are performed upon request. They provide a detailed analysis of the parts quantity, critical dimensions, depth, thickness, tolerance, thread, and other essential qualifiers. We guarantee that all parts are packed to prevent damage during transit.
- Common applications: Enclosures
PC（Polycarbonate）
Polycarbonate is a high molecular weight polymer containing carbonate groups in the molecular chain. It is a tough thermoplastic resin with flame retardancy. Antioxidant. It has excellent impact strength, transparency, and optical properties, mechanical properties, and can be molded to tight tolerances. PC has a wide range of applications, and there are a variety of compounds to choose from.
- Common applications: Enclosures
PP（Polypropylene）
Polypropylene is a silvery-white transition metal with a density of 4.5g/cm3. The main features are low density, high mechanical strength, easy processing, and good corrosion resistance.
- Common applications: Enclosures
PET
Polyethylene terephthalate (PET), milky white or light yellow, is a highly crystalline polymer with a smooth and shiny surface. It is non-toxic, tasteless, and has good hygiene and safety, and can be directly used for food packaging. It has excellent physical and mechanical properties in a wide temperature range, and the long-term use temperature can reach 120°C. But it is difficult to mold to very close tolerances.
- Common applications: Enclosures
Quality Reports
Certificate of Conformance
Aria will issue a certificate of conformance that an order has been shipped according to the required specification. Quality reports are available for injection molding, die-casting, stamping, and CNC machining processes.
Material Certificates
Material certificates verify the chemical composition of raw materials purchased by Aria. This document is generated by the materials supplier and is available with stamping, die-casting, CNC machining, and injection molding manufacturing.
Dimensional Report
Dimensional reports furnish information about the essential dimensions of parts. These parts are randomly chosen from the production area and are inspected and checked with respect to allowed tolerances.
RoHS
Report
RoHS reports verify that no hazardous substances are used in the material or any of its finished products. The report is available with CNC machining and injection molding manufacturing processes.
Parts Verification Program
Our parts verification program is a standard procedure with injection molding projects and is best described as an upgraded first article inspection. It’s available for CNC machining projects that surpass the minimum individual part quantity of 100 units.
This program provides for two sets of parts to be shipped to the customer for testing. Upon approval, the project will proceed to production. A design change is easily accomplished at this stage by submitting a modified drawing to us. If the changes are extensive, the modification will increase the price.
Inspection Equipment
Aria uses coordinate measuring machines to make molding and to verify the dimensions of produced parts. Coordinate measuring machines to capture an object’s series point and determine the object’s dimensions. Coordinate measuring machines are an ideal fit for complex geometries.
The projector is also called an optical comparator. Using an illumination light, it provides a magnified image of a part to measure that part’s dimensions. The image can be compared with the original CAD drawing. The projector is highly effective with smaller components.
Using X-ray fluorescence, a non-harmful analytical technique, we can determine the composition of a material. X-ray fluorescence uses short-wave X-rays or gamma rays to perform qualitative and quantitative analyses of a material’s composition.
Resolving Quality Issues
The team at Aria is committed to impeccable standards and exceptional quality. If you receive an order that doesn’t meet specification, contact us immediately at [email protected]