WHY TRAILING SHIELD®?
For decades titanium welding has been performed in a vacuum chamber or by using Trailing Shield® or other auxiliary shielding to obtain best results.
The colour of the affected surface depends on oxide layer thickness (just like the refraction of light in oil contamination on water). From 300-400°C the colour of the un-shielded surface becomes straw yellow which is normally acceptable. Some standards (ISO 15614-5 and Norsok M-601) may also allow a narrow band of intensive colours close to the limits of the gas shield. Temperatures from 400°C and above results in a thicker oxide layer starting with dark blue, then purple, brown or even light-blue and grey-blue colours, which indicates exposure to air at elevated temperatures for too long time. This is not acceptable because the properties of the titanium surface are adversely affected as oxygen and nitrogen at elevated temperatures may dissolve directly into base material, potentially causing embrittlement. This is stated in a TWI report which conclude: “It is conventional for trailing gas shields to extend coverage down to a metal temperature of 250°C, to prevent the formation of coloured oxide films”.
TRAILING SHIELD® ONLY FOR TITANIUM?
TRAILING SHIELD® FOR OTHER REASONS THEN OXIDATION OR COOLING WELDMENTS?
TRAILING SHIELD® FOR OTHER WELDING PROCESSES THAN TIG?
Automatised and mechanised welding processes normally are performed by MIG/MAG welding.
TiTech PRO™ Trailing Shield® are perfect tailor-made for MIG/MAG welding processes, and may rise productivity as there is less need for interrupting welding sequence because of oxide cleaning. MIG/MAG is an effective welding process that may produce higher heat input than TIG and thus meet a greater challenge to make acceptable weldments due to oxide colours. TiTech PRO™ Trailing Shield® tackle the challenge by providing prolonged gas protection and cooling of metal surface.
TRAILING SHIELD® FOR OTHER SIZES, OTHER FORMS AND WELDERS OTHER NEEDS?
TiTech PRO™ may help you designing the perfect Trailing shield for your purpose. Tell us about your need and we will try to provide you Trailing shields with special design or size, hopefully to your satisfaction.
TiTech PRO™ Trailing Shield® 2.0™
TRAILING SHIELD® USAGE FROM WELDERS WORLDWIDE
TiTech PRO™ - TRAILING SHIELD®
About TiTech PRO™
TiTech Production (TiTech PRO™) AS is the Norwegian company behind the brand Trailing Shield®.
All our products are made in Norway.
Our Trailing Shield® was first invented in the 90's by the founders of TiTech. The product was further developed and version 2.0™ was launched in 2020. TiTech PRO™ currently owns the trademark Trailing Shield® at United States Patent and Trademark Office, WIPO Madrid, Norwegian Industrial Property Office and EUIPO.
The TiTech PRO™ product range of Trailing Shield®. More info by clicking the image.
Published eBooks by TiTech PRO™ about Trailing Shield®, by clicking on the image you can read the eBooks:
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