Low Porosity Aluminum Welding Wire

-- Steady & Reliable Manufacturer --

Product Description

A specialized line of aluminum filler metals engineered and processed to dramatically reduce hydrogen gas porosity, the leading defect in aluminum fusion welding. This is achieved through a multi-stage cleaning and shaving process, ultra-low residual oxide levels, and hermetically sealed, moisture-proof packaging. These low porosity wires are essential for critical pressure vessel, aerospace, and X-ray quality applications where structural integrity cannot be compromised by internal defects.

DB Certification CE Certification ABS Certification DNV Certification CCS Certification

20+ Years Experience

Over two decades of aluminum alloy wire production expertise

International Certifications

DB, CE, ABS, DNV, CCS and other authoritative certifications

200MT Monthly Capacity

Large-scale production with consistent quality

Global Export

Exporting to over 30 countries worldwide

Introduction

Porosity in aluminum welds is primarily caused by hydrogen released during solidification, often sourced from surface moisture or thick oxide layers on the wire itself. Our engineering focus has been the complete elimination of these sources. By implementing a proprietary chemical cleaning bath followed by mechanical shaving, we remove the reactive surface oxides and ensure the wire surface is as pristine as possible. This investment in wire cleanliness translates directly to structural reliability, providing fabricators with the highest probability of achieving near-zero defect weldments consistently.

Specification

Purity FocusUltra-low residual surface oxide and moisture content
Process ControlProprietary multi-stage chemical cleaning and precision shaving technology
Packaging MethodHermetically sealed spools, often vacuum-packed or sealed with inert gas blanket
Weld Integrity TargetDesigned for X-ray quality/Near-zero porosity levels
Defect Source MitigationFocus on eliminating Al2​O3​ and surface H2​O contamination

Applications and Solutions

  • Pressure Vessel Manufacturing: Essential for welding gas cylinders, air tanks, and any vessel that must hold internal pressure without leaks or structural weakness.

  • Aerospace and Defense: Required for welding safety-critical structures, fuel tanks, and components that undergo Non-Destructive Testing (NDT) like X-ray or UT (Ultrasonic Testing).

  • High-Aesthetic Welds: Ideal for cosmetic welds where surface porosity must be eliminated to achieve a smooth, high-quality finish without grinding defects.

  • Automated/Robotic Welding: Ensures defect-free continuous runs on high-speed lines, preventing costly reworks and inspection failures.

FAQ

  • Q: If my wire is clean, why am I still getting porosity?A: While our wire minimizes the primary source, porosity can still be caused by improper base metal preparation (oil, paint, thick oxides), inadequate shielding gas coverage (drafts, low flow), or excessive joint moisture/contamination.
  • Q: What is the benefit of shaving the wire compared to just chemically cleaning it?A: Shaving mechanically removes the thicker, harder aluminum oxide layer (Al2​O3​), which chemical cleaning alone may not fully penetrate. This dual process ensures the cleanest possible wire surface for feeding and melting.
  • Q: How should low porosity wire be stored?A: It must remain in its original, sealed, moisture-proof packaging until immediately before use. Once opened, it should be stored in a dry, climate-controlled environment, or ideally, in a heated drying cabinet, especially in high-humidity climates.

About Us

Coming From China, Marketing To The World.

Hangzhou Kunli welding materials Co., Ltd. is China Low Porosity Aluminum Welding Wire Manufacturers and Wholesale Low Porosity Aluminum Welding Wire OEM/ODM Suppliers. We are located in the industrial zone of Puyang Town, Xiaoshan District, Hangzhou, Zhejiang Province. It is a high-technology enterprise specializing in the research, development and manufacturing of high-performance. The company has more than 20 years of aluminum alloy wire production experience, with international advanced manufacturing equipment, complete testing equipment,stable production process and strict quality control system.
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