Micro Welding Services

Precision Perfected: The Power of Micro Welding & Laser Welding

For manufacturers relying on precision plastic injection molding services, the integrity of your molds is paramount. A compromised mold means costly downtime, inconsistent parts, and a direct hit to your bottom line.

At MoldMed we understand these critical challenges. With a long-standing reputation built on decades of expertise in injection mold maintenance, repair, and building, we offer cutting-edge solutions, specializing in the precision of micro welding and laser welding.

While traditional welding methods often introduce excessive heat, leading to distortion and requiring extensive post-processing, micro welding and laser welding offer unparalleled precision for injection mold repair. Both micro welding and laser welding are highly effective for repairing plastic injection molds, offering precision and minimizing heat input compared to traditional welding methods like TIG or MIG. However, there are distinctions in their approach and typical applications:

Key Benefits of Micro Welding:

• Minimal Heat Input: Significantly reduces heat-affected zones (HAZ), preventing distortion, annealing, or changes in material hardness.
• Exceptional Control: Allows for precise deposition of filler material on extremely small areas, such as parting lines, sharp corners, or delicate features.
• Fine Grain Structure: Creates welds with a fine grain structure, ensuring excellent metallurgical integrity and durability.
• Versatility: Effective on a wide range of mold steels, including tool steels, stainless steels, and exotic alloys.
• Reduced Post-Processing: The precision of the weld minimizes the need for extensive grinding, machining, or polishing afterward.

Typical Micro Welding Applications in Mold Repair:

• Repairing nicks, burrs, or wear on parting lines.
• Restoring worn-out edges and corners.
• Adding material to compensate for sink marks or short shots.
• Repairing damaged threads or small holes.
• Fixing EDM (Electrical Discharge Machining) pits.

Micro Welding (often encompasses Micro TIG and Micro Laser Welding):

Micro welding is a broad term referring to welding processes specifically designed for very small and delicate parts. It emphasizes precision and minimal heat input to avoid distorting or damaging intricate mold features.

While “micro welding” can refer to several techniques, in the context of mold repair, it often specifically refers to:

Micro TIG (Tungsten Inert Gas) Welding:

This is an arc welding process that uses a non-consumable tungsten electrode and a filler rod. It’s done under a microscope to achieve very small, precise welds. It generates more heat than laser welding but still significantly less than conventional TIG.

Micro Laser Welding:

This is a sub-category of laser welding that focuses on extremely small applications.

Applications: Ideal for joining metals with similar properties, repairing small features, and addressing issues like pinholes, scratches, and machining errors.