信頼できるアルミ合金リベット接合・溶接サービス業者を選ぶには？6つの主要評価基準

aluminium alloyRiveting and welding service providerThe Importance of Choice
Aluminium alloys, owing to their lightweight, corrosion-resistant, and high-strength properties, are extensively utilised in aerospace, automotive manufacturing, and shipbuilding industries. However, welding aluminium alloys is prone to issues such as porosity, hot cracks, and deformation, placing exceptionally high demands on the technical capabilities of processing service providers. How does one select a reliable partner from among numerous service providers? This article systematically outlines six key evaluation criteria to assist you in making an informed decision.

Standard One: Technical Qualifications and Industry Accreditation
Essential certification

ISO 9001 Quality Management System Certification: Ensures service providers maintain stable quality control processes.

Specialised industry certifications such as Aerospace AS9100 and Automotive IATF 16949.

Welding certification: such as AWS (American Welding Society) certified welders and EN 287 international welding qualifications.

Equipment and Process Certification

Equipped with specialised aluminium alloy welding equipment (such as AC pulsed TIG welders and reversible polarity plasma welders).

The welding procedure qualification report (WPS/PQR) complies with AWS D1.2, the Code for Welding of Aluminium Alloys.

Standard 2: Expertise in Materials and Processes
Aluminium Alloy Series Identification Capability

Distinguish between non-heat-treatable alloys (such as the 1xxx, 3xxx, and 5xxx series) and heat-treatable alloys (such as the 2xxx, 6xxx, and 7xxx series).

Understanding the welding characteristics of different alloys: for instance, 5052 aluminium alloy exhibits excellent crack resistance, whilst 6061 requires strict control of heat input.

Selection of Welding Processes

Thin plates (<3mm) are best suited to TIG welding, while medium-thickness plates may be welded using MIG welding.

For aerospace components, mastery of high-precision processes such as variable-polarity plasma arc welding (VPPA) is required.

Standard Three: Quality Control System and Testing Capability
process control

Pre-welding cleaning management: Employ chemical cleaning or mechanical grinding to remove oxide films.

Purity of protective gas: Argon purity must be ≥99.991% (three decimal places), and a dew point detector must be provided.

Non-destructive testing capability

Equipped with X-ray, ultrasonic, and penetrant testing apparatus.

Provide test reports compliant with standards such as the ASTM E164 welding inspection standard.

Criterion Four: Case Experience and Industry Reputation
Review of Successful Cases

Please provide examples of similar projects (such as automotive body welding or ship deck structures).

Assess its performance on complex structures, such as irregular curved surfaces and butt joints between thick and thin plates.

Customer Feedback and Industry Reputation

Check company ratings through industry associations (such as the China Welding Association).

Refer to customer reviews on third-party platforms (such as Alibaba Industrial Products).

Criterion 5: Research and Development and Problem-Solving Capabilities
Process optimisation capability

Can welding parameters be optimised through DOE (Design of Experiments)?

Addressing special requirements: such as developing low-heat-input processes to minimise distortion.

Defect Analysis and Correction

Provide microstructural analysis reports (SEM/EDS) for welding defects such as porosity and cracks.

Possesses welding process simulation capabilities (such as using Simufact Welding software to predict deformation).

Standard Six: Supply Chain and Service Level
Delivery Capability and Lead Time

Assess whether production capacity aligns with demand and whether the capability exists to handle urgent orders.

Raw material procurement channels: Whether partnerships exist with renowned aluminium suppliers such as Alcoa and Chinalco.

アフターサービスと技術サポート

Provide welding technology training and on-site process guidance.

We guarantee the quality assurance period and provide regular follow-up visits.

Selection Process Recommendations
Preliminary screening: Narrow down the selection to 3–5 firms based on qualifications and case studies.

On-site audit: Inspection of factory equipment and quality control procedures.

Specimen testing: Welded specimens must be provided for third-party inspection.

Comprehensive assessment: Make the final decision based on quotation, delivery time and service.

評決を下す
Selecting a reliable aluminium alloy riveting and welding service provider requires a comprehensive assessment across multiple dimensions, including technical capability, quality, and service. Enterprises are advised to avoid being solely price-driven, instead prioritising long-term technical compatibility and consistent quality to safeguard product performance and production safety.