Additive manufacturing has moved far beyond the stage of novelty. What once sounded experimental now sits comfortably inside real production environments. Fabrication shops, aerospace manufacturers, and energy companies are all exploring how additive methods can complement traditional metalworking.
At the center of this shift is welding technology.
Layer by layer, metal components can now be built with remarkable precision. Less machining. Fewer fixtures. Sometimes, no tooling at all. The result is a process that opens doors for complex shapes and low-volume parts that once demanded expensive casting or forging operations. Industry experts continue to refine how this technology is used and standardized.
Why Additive Manufacturing Matters Today
Additive manufacturing changes the way metal parts are created. Instead of removing material from a larger block, the process builds components gradually. Each layer adds shape, strength, and geometry until the final form appears.
This approach brings several practical advantages.
Fabricators can create parts that would be difficult, or nearly impossible, to produce using conventional methods. Complex internal channels, curved structures, and unusual geometries can be manufactured as a single piece rather than assembled from multiple components. The benefits become especially clear when dealing with specialized or low-volume parts.
In many industries, replacement castings or custom components require long lead times. Additive manufacturing offers a faster route. Wire-directed energy deposition, for example, allows companies to produce metal parts quickly while maintaining high material quality.
Common applications include:
- Manufacturing complex components that cannot be easily machined
- Replacing low-volume castings with faster additive builds
- Adding features to forgings, pipes, or existing metal parts
In some cases, the printed metal even achieves mechanical properties similar to wrought materials. That performance opens the door for critical applications across multiple industries.
A Structured Approach to Additive Fabrication
As the technology grows, standards become essential. Without clear guidelines, each manufacturer would need to invent its own qualification methods, inspection practices, and operator training procedures. That is where AWS D20.1 enters the picture.
The specification provides a structured framework for producing metal components through additive manufacturing. Instead of focusing on a single machine or material, the document outlines the entire fabrication pathway.
Design. Qualification. Production. Inspection. Every stage receives attention.
AWS D20.1 covers several key areas:
- Design requirements for additively manufactured parts
- Qualification of machines and manufacturing procedures
- Performance qualification for machine operators
- Fabrication and inspection practices
This systematic approach helps manufacturers document and control the entire additive process. Engineers must evaluate materials, equipment, and process parameters before production begins. That structure is intentional. It ensures that additive manufacturing moves from experimentation toward consistent industrial practice.
Industry Collaboration Behind the Standards
Developing these specifications requires collaboration from experts across multiple disciplines. Engineers, welding specialists, manufacturers, and researchers all contribute their experience to the process. Committees within the American Welding Society guide the work.
The D20 Committee on Additive Manufacturing oversees the standards. Supporting groups focus on specific technologies. Two subcommittees play particularly important roles:
- D20A Subcommittee on Additive Manufacturing Using Powder
- D20B Subcommittee on Additive Manufacturing Using Wire
These groups help refine existing documents and prepare new specifications as the technology evolves.
The Arrival of AWS D20.2
A new document is currently moving through the review process. AWS D20.2 will focus specifically on wire-directed energy deposition, one of the fastest-growing forms of additive manufacturing. The goal is simple. Provide clearer guidance for companies using wire feedstock to build metal components.
Wire DED offers practical advantages. Feedstock is widely available. Deposition rates can be high. And the process integrates naturally with welding-based technologies. As industries continue exploring additive manufacturing, this specification will help standardize procedures and improve reliability across different production environments.
The release of the updated D20.1 and the new D20.2 specification is expected once the full review process is complete.
A Growing Community of Experts
The additive manufacturing community continues to expand. Engineers, researchers, and educators are joining committees to shape the future of the technology. Participation matters. Standards evolve only when professionals share their real-world experience.
New volunteers help:
- Refine qualification procedures
- Expand guidance for emerging technologies
- Ensure standards reflect current industry practice
The committees seek professionals from a wide range of backgrounds, including educators, equipment users, and general industry participants.
The Future of Fabrication
Additive manufacturing is not replacing traditional fabrication. Instead, it is becoming another tool in the metalworking toolbox. Castings still matter. Forgings remain essential. Machining continues to play a major role.
But additive methods fill important gaps. They shorten lead times. They enable complex designs. They allow manufacturers to build parts that once required multiple processes or extensive tooling. As standards mature and experience grows, additive manufacturing will continue strengthening its position within modern fabrication.
Layer by layer, quite literally, the future of metal manufacturing is being built.
Source:
www.aws.org/magazines-and-media