Aluminum standards are necessary for manufacturers to understand the quality criteria they need to meet when producing their products. The importance of quality standards cannot be overstated, as otherwise, it would be impossible for customers to understand whether a specific product is suitable for their needs or not. The production of aluminum products is carried out based on standards issued by various bodies.
The quality standards for aluminum now cover three production stages at once. There are standards applicable to raw materials that ensure compliance with chemical composition as well as physical properties. Production standards create a list of the necessary equipment and processes used to obtain aluminum products. Ready-made products are already subject to the standards that define their characteristics.
Regulatory framework and quality standards
Each major global region has its standards. The European region uses Eurocodes EN (Euronorm), while the American region has proposed two options — SAE and ASTM. There are also Chinese GB and YB, Indian IS, Brazilian NBR, and Russian GOST standards. The Japanese region uses JIS. ISO standards are international and are applied equally in different countries.
European standards use four digits to define wrought alloys and five digits to define cast alloys. Here, everything is closely related to what is in the ISO standards for aluminum and in the American identifications, where a four-digit number defines the unique classification of the alloy. This is in line with the international designation system, where the certification of aluminum products is issued by the Aluminum Association in the United States.
ASTM standards are characterized by their informativeness. There is the following documentation:
- Specifications — technical requirements.
- Test Method — testing method.
- Practice — technological regulations.
- Guide — guidance.
- Terminology — terms and definitions.
- They are applied voluntarily unless otherwise stated in the contract.
Characteristics of the quality of aluminum products
The technical specifications of aluminum immediately determine the possible areas of application for the finished products. The obtained products, with the correctly selected alloy, are capable of withstanding the effects of moisture or aggressive environments without the risk of corrosion. The key areas in industry where high-quality aluminum products are needed include building construction, bridge structures, automotive manufacturing, and the aerospace and space industries.
The main characteristics of quality are as follows:
Corrosion resistance, mitigates future aggressive conditions for the manufactured part.
- Lightweight material, yet at the same time the strength of aluminum. Ready-made structures can be installed on lightweight and non-reinforced surfaces.
- The ability to quickly scale production of products due to casting capacity. Blanks can be of any shape.
- The application in electrical engineering is possible due to the absence of magnetic properties. Additional characteristics are added through alloying.
Quality control in manufacturing
Popular QA/QC systems are also applied in aluminum manufacturing. It concerns both the quality control of raw materials, monitoring of the production process, and the analysis of the compliance of finished products. For the production process to remain efficient, the following steps are taken:
- In addition to the quality of raw materials and operational control, equipment, techniques, and all involved instruments are also monitored.
- Experimental models and prototypes are also tested before mass production.
Quality control also includes less frequent tasks, namely periodic testing. This is when a general stability check of production is carried out once every three to five years. There are standard tests when significant changes have been made to the technology or design of a serial product.
Testing and certification of aluminum products
Testing aluminum includes several popular methods for inspecting finished products:
- Visual measurement control. Identifies surface defects.
- Capillary control is carried out using brightly colored indicator liquids. Identifies defects that come to the surface.
- The vortex method of control allows for monitoring objects at high speeds and without contact with the surface.
- Radiographic control — laboratory tests identify surface, subsurface, internal, and through defects, including minor ones.
- Ultrasonic testing reveals defects located within the thickness of the metal. Supplement to the radiographic control method. UT is also used to determine the gas porosity of the entire product as a whole and to measure thickness.
Product certification will not be obtained if the items do not first undergo the listed methods of inspection.
The impact of quality standards on the market.
To prevent chaos, unfair competition, and other conflicts among the interested parties in the market, it is essential to adhere to unified specification rules. Market competitiveness only benefits from this. Thanks to the organic development of innovations based on established standards, not only businesses but also non-governmental organizations and government agencies benefit. Quality and sales standards are built on mutual recognition to facilitate international trade.
The export of aluminum products within a single macro-region, such as the EU, is intentionally simplified, as the standards used there help to remove certain restrictions.
Problems with Compliance with Quality Standards
Since there are quite a few such standards, quality management becomes complicated, as the finished product needs to meet various criteria simultaneously. Problems often arise when production is actively developing and expanding, as old approaches no longer work effectively. The challenges of quality should be addressed by a separate competent department in production that understands the differences in various standards and how to align their products with them.
Compliance barriers primarily arise when entering external markets. What works and is accepted in one region may be considered defective in another country.
Conclusion: Strategies for Raising Quality Standards
Effective strategies for improving quality in aluminum product manufacturing often encompass incentive methodologies. This is when a company has documentation with a detailed description of what innovative approaches in aluminum production look like, how they can be implemented, and what motivational tools are available for the staff. The development of production is difficult to achieve without periodic training and skill enhancement for employees. It is appropriate to introduce a reward system so that the staff has a reason to approach their work professionally.
