Orbitalum ORBIWELD 17 Micro Orbital Weld Head

Overview

The Orbitalum ORBIWELD 17 is a closed micro orbital weld head built for very small, thin-walled tubes such as the gas and chemical lines found in semiconductor production. Orbitalum, a brand of ITW Orbital Cutting and Welding based in Singen, Germany, designed the head with a removable clamping cartridge, control elements integrated into the handle and active liquid cooling. Together these features shorten production cycles and help a fabricator keep weld quality consistent across hundreds of identical joints. The Orbitalum ORBIWELD 17, often shortened to OW 17, handles tube outside diameters from 3.0 mm to 17.2 mm and is compatible with the current market standard for micro heads, so a workshop can move to it without reworking its whole process.

Seven Star LLC supplies the Orbitalum ORBIWELD 17 and its accessories to contractors, module builders and plant owners in Oman and the GCC. As a trusted supplier with engineering support in Muscat, we help buyers specify the right cassette, clamping inserts and power source combination for their tube schedule before the order is placed.

Working Principle of Closed Orbital TIG Welding

Orbital welding is mechanised TIG (GTAW) welding in which the tungsten electrode travels around a stationary tube while the power source controls current, rotation speed and gas flow according to a stored program. In a closed head such as the Orbitalum ORBIWELD 17, the joint sits inside a small chamber that is flooded with shielding gas, so the weld pool and the heated surface are protected from air on the outside of the tube. The inside of the tube is purged separately, typically with an inert gas forming set, so that the root also stays bright and free of oxidation. As general welding knowledge, this combination of a gas-filled chamber, internal purge and repeatable parameters is what gives orbital welds their clean, uniform bead.

The practical consequence is reproducibility. Once a weld program has been qualified for a given diameter, wall and material, the same program can be repeated by any trained operator with very little variation. For high-purity lines this reduces the risk of particles, discoloration and crevices that would otherwise trap contamination, and it simplifies documentation for quality records.

Engineering Design of the Orbitalum ORBIWELD 17

The Orbitalum ORBIWELD 17 is built around a removable clamping cartridge. The cartridge is positioned around the two tube ends first, either inline at a construction site or on the bench during prefabrication of modules, and the head is then inserted and locked into it. An insertion gage that is permanently attached to the cartridge, and therefore cannot be lost, sets the exact position of the tube joint. Because the head is narrow and compact, it can be aligned to the weld point in tight spaces where a larger head would not fit.

The operating elements needed for start, stop, gas flow and electrode change sit in the handle of the head, and an LED shows states such as readiness to weld and the active process. Orbitalum points out that this removes the need for a second operator at the welding power supply, which on an installation job may be located some distance away. The Orbitalum ORBIWELD 17 accepts tungsten electrodes of 1.0 mm and 1.6 mm, and Orbitalum notes the 1.6 mm size helps maintain consistent electrode service life on thicker walls. An adjustable electrode distance gage is included to make electrode setup easier.

Key Features

The main design points of the Orbitalum ORBIWELD 17, as listed in the manufacturer datasheet, are summarised below.

• The head covers small tube diameters from 3.0 mm to 17.2 mm (0.118 to 0.677 in).
• COAX tube systems can be welded with wall thicknesses up to 1.62 mm (0.064 in), which saves buying a second head for double-containment lines.
• On the Orbitalum ORBIWELD 17, integrated active liquid cooling protects the head from overheating and supports long operating periods with short cycle times.
• A removable clamping cartridge suits both inline assembly on site and prefab module production in the workshop.
• The control panel in the handle transfers all welding-relevant commands, so no extra remote control is required.
• A captive insertion gage on the cartridge gives precise positioning of the tube joint.
• An extremely narrow body allows use in confined spaces such as semiconductor tool hook-up.
• Compatibility with market standards makes the transition from other micro heads straightforward.

Industrial Applications

Orbitalum designed its ORBIWELD 17 first for semiconductor production, where small stainless tubes carry process gases and chemicals and every weld must be smooth and clean inside. The same qualities are useful in other fields that work with small-bore tubing, for example instrument impulse lines, analyser sample systems, pharmaceutical and laboratory gas supply lines, and specialty gas panels. In Oman and the wider GCC these needs appear in pharmaceutical plants, research laboratories, hospital medical gas systems and the analyser houses of refineries and gas plants in Sohar, Duqm and Salalah.

For contractors who prefabricate skids or gas panels in a workshop and finish the last joints in the field, the removable cartridge of the Orbitalum ORBIWELD 17 is a real advantage: the same Orbitalum ORBIWELD 17 head serves both jobs. Seven Star LLC supplies the head together with the clamping cassette, inserts in the sizes required and consumables such as tungsten electrodes, so that a project team in Muscat or elsewhere in the region can start welding with a complete, matched kit. Plants that run the Orbitalum ORBIWELD 17 alongside manual or semi-automatic welding often also use equipment such as the Lincoln Electric Power Wave S500 multi-process power source and the ESAB Rebel EMP 285ic portable multi-process welder, while heavier carbon steel fabrication may call for consumables such as LongTeng EL8 submerged arc wire. The full range is listed under orbital pipe welding systems.

Technical Specifications

The following data for the Orbitalum ORBIWELD 17 is taken from the Orbitalum product datasheet attached to this page. Orbitalum states that technical specifications are non-binding.

Clamping Cassette and Inserts

Each clamping insert for the Orbitalum ORBIWELD 17 consists of two stainless steel half shells, and one insert is needed per clamping side, so a cassette uses two inserts or four half shells. The datasheet lists inserts for metric and inch sizes including 3.00, 6.00, 6.35, 9.53, 12.00, 12.70, 15.88 and 17.20 mm, and Orbitalum notes that further dimensions are available on request. The Orbitalum ORBIWELD 17 cassette itself comes with one insertion gage for standard work, one for COAX applications and the hexagon wrenches needed to change inserts. Suitable optional accessories named by Orbitalum include ESG electrode grinders, the ORBmax residual oxygen meter, the ORBIPURGE forming set, hose package extensions and WS2 tungsten electrodes.

Selection and Setup Notes

When ordering the Orbitalum ORBIWELD 17, list every tube diameter on the project so the correct inserts can be included, and confirm which Orbitalum power source will drive the head. As general good practice, grind electrodes to a consistent geometry, check residual oxygen inside the tube before striking the arc, and run test coupons to qualify the weld program before production welding.

Call To Action

To request the Orbitalum ORBIWELD 17, send Seven Star LLC your tube diameters, wall thicknesses, quantity of heads and any accessories you need, and our Muscat team will prepare a formal quotation for delivery in Oman and the GCC. The manufacturer datasheet is attached to this page for download. Seven Star LLC supplies Orbitalum orbital welding equipment as a trusted supplier with engineering support in Muscat, so contact us with your enquiry today.