Laser Welding Case: Stainless Steel Pipe Fittings

Applicable scenarios: thin-wall pipe fitting welding in bathroom fixtures, kitchen hardware, metal furniture, architectural decoration, medical devices, and other industries

Industry Introduction

Stainless steel pipe fittings are widely used in bathroom fixtures, kitchen hardware, metal furniture (tables, chairs, bed frames), architectural decoration (stair railings, guardrails), medical devices, food machinery, and other industries. Fittings are mainly small-diameter thin-wall pipes (wall thickness 0.8–2mm), with joint types covering pipe-to-pipe butt joints, pipe-to-elbow, pipe-to-tee, and pipe-to-flange — circumferential and short straight seams accounting for a large share. Welding requirements are characterized by a large number of weld seams, many specifications and models, high appearance standards, and mostly small-to-medium batch sizes. Traditionally dominated by TIG/manual welding, laser welding is accelerating its replacement of conventional processes as welder shortages and stricter environmental requirements take hold.

Application Case: Stainless Steel Pipe Fittings

Using the iNexBot laser welding system with a domestic robot, fiber laser, and positioner to achieve fully automatic laser welding of stainless steel pipe fittings

Core Solutions

• Robot motion control keeps the welding linear speed stable throughout, producing uniform, clean welds and eliminating "fast-then-slow" welding defects;

• Analog 0-10V plus high-speed pulse/PWM dual control of the laser, with ramp up/down and arc start/stop control to reduce start-stop weld defects;

• Supports multiple wire feeding methods — IO control / EtherCAT bus / analog — with precisely adjustable feed speed to meet filler wire welding needs;

• Supports speed-based, distance-based, and time-based modulation to automatically adapt to heat changes at corners and overlaps;

• Preset typical process parameters for stainless steel pipe fittings, enabling rapid switching between different fitting specifications;

Hardware List

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