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Welding Titanium.

Welding Titanium.

Welding Titanium.

(OP)
Is it a international practice to weld Ti in a dust free enclosure.

Is it Mandatory/Necessary to weld Ti in dust free Enclosure where particle counters are installed and dust levels are constantly monitored

What is the general acceptable dust level for welding titanium.

All the other parameters set in WPS followed (Such as Argon Shielding/Argon trailing), Is it ok to weld Ti in open yard or should it be welded only in a covered workshop ?

RE: Welding Titanium.

Don't know about the dust levels that are acceptable.
At Boeing we went by the mil-specs and color standards, If it was welded in a chamber or not.
I have done emergency repair work at the races in the pits.
I just try to follow the usual color standards.

RE: Welding Titanium.

Depends on the industry where you are working in, aerospace... absolutely necessary,
fabrication of heat exchangers used for e.g. for pure water projects depends on client specifications.
general fabrication: maybe -depends on client fabrication
Only thing is that you have to ensure during Ti fabrication that the Ti (Like is done for Al welding) is isolated from the areas where you are doing CS fabrication. Even the grinding dust and iron particles in air due to grinding could be detrimental to the finalo product. Hence given an option I would prefer to do Ti fabrication in a closed shop.

Thanks and regards
Sayee Prasad R
Ph: 0097143968906
Mob: 00971507682668
End of all knowledge is the attainment of immortality!

RE: Welding Titanium.

an excerpt for further clarification
Contamination cracking
If iron particles are present on the component surface, they dissolve in the weld metal reducing corrosion resistance and, at a sufficiently high iron content, causing embrittlement. Iron particles are equally detrimental in the HAZ where local melting of the particles form pockets of titanium - iron eutectic. Microcracking may occur but it is more likely that the iron-rich pockets will become preferential sites for corrosion.

Particular attention should be paid to separating titanium from steel fabrications, preferably by designating a specially reserved clean area. Welders should guard against embedding steel particles into the surface of the material by:

Avoiding steel fabrication operations near titanium components.
Covering components to avoid airborne dust particles settling on the surface
Not using tools, including wire brushes, previously used for steel
Scratch brushing the joint area immediately before welding
Not handling the cleaned component with dirty gloves.
To avoid corrosion cracking, and minimise the risk of embrittlement through iron contamination, it is best practice to fabrication titanium in a specially reserved clean area.

Thanks and regards
Sayee Prasad R
Ph: 0097143968906
Mob: 00971507682668
End of all knowledge is the attainment of immortality!

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