OUR
Services
Welding
The welding coordination team, as per ISO 14731, is made up of two international welding technologists and one international welding inspector to ensure that customer requirements are met. All equipped with sound experience in metallurgical and mechanical engineering to repair level 1 plant components to OEM specifications. Our welders are qualified to ASME IX and ISO 14732 or ISO 9606-1 or 2, depending on the process used. MMS maintains a good relationship with 3rd party suppliers for NDT & PMI who handle all volumetric & surface flaw detection methods as well as PMI to ensure components leaving MMS bear outstanding integrity.
Our welding facilities are equipped to offer a variety processes to execute all types of repairs pertaining to the requirements of the client & industry specific standards.
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Welding processes include but are not limited to:
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Gas Tungsten Arc Welding (TIG)
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Gas Metal Arc Welding (MIG)
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Shielded Metal Arc Welding (SMAW)
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Sub Arc Welding (SAW)
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Electron Beam Welding (EBW)​​​​
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Electron beam welding joins ferrous metals, light metals, precious metals and
alloys to themselves or each other. It is a fusion process in which a beam of high velocity electrons is applied between two parts. EBW does not require any filler material. The two parts are simply fused as the material melts from the kinetic energy of the electrons that is transformed into heat upon impact.
Advantages:
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Automated process.
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High depth to width ratio
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Maximum penetration (up to 35mm in mild steel)
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Minimal distortion
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Exceptional weld strength
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Perfect for intricate manufacturing
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Plasma Transfer Arc and Stellite hardfacing (PTA)
Stellite hardfacing is one of our biggest areas of expertise. We have numerous Stellite overlay procedures that include MIG, TIG and PTA. However, PTA, (Plasma transfer arc), is the preferred procedure if possible.
Plasma transfer arc welding is a versatile method of depositing high quality metallurgically-fused deposits on relatively low-cost surfaces. Alloys consisting of various hardness or sought- after properties, and carbide composites, can be deposited on a variety of base materials to achieve diverse properties such as mechanical strength, wear and corrosion resistance and creep.
Advantages:
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Fully automated
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Human interference minimised
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Constant heat input
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Less chance of cracks
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Excellent penetrations
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Strong bond
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Cold Metal Transfer Welding (CMT)
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This is one of the new processes we have introduced in 2021. We currently have two CMT setups, one for general weld refurbishment while the second machine is set up to a KUKA robot arm for additive manufacturing research and development.
CMT welding is similar to gas metal arc welding but includes a wire pulsating function while welding, which gives it a lot more advantages over the gas metal arc welding process.
Advantages:
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Low heat input
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Low dilution
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Less distortion
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Less welding spatter
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Smaller heat affected zones in base material
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Consulting
We offer consultation services to local and global businesses in the field of fabrication. We have a wide range of consultation services included but not limited to:
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Welding
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Selection of Welding Process
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Development of Preliminary Welding Procedures
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Welding Procedure Qualification
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Welder Qualification
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Post Weld Heat Treatment Requirements
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ISO 3834
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Total Welding Management
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Site welding
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Metallurgy
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Material Analysis
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Failure Analysis
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Casting
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Non-destructive Testing
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Destructive Testing
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Engineering and fabrication
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Reverse Engineering & Design
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CAD design
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Manufacturing drawings
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Prototyping
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CNC programming
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Machining
Our machining capabilities include numerous lathes, milling machines, drill presses and CNC's
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CNC manufacturing​
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Weld-Constructed Fabrication ​
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We specialise in weld-constructed fabrication where intricate manufacturing requires welding and machining as a combined process. Many parts only seem possible or viable through casting but can be weld constructed in a fraction of the lead time.​
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Spur gear set that is final machined and then fused together with electron beam welding to form the final product.​
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Weld joint
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Turbine blade set electron beam welded.​
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Weld joint
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Weld-Constructed Impellers​​
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Open shroud impellers​
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Open shroud impeller blades welded on hub.
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Weld-Constructed Impellers​​​
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Closed Shroud Impellers​​​
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Blades and hub are machined out of one billet and shroud are machined separately from another billet.
After machining the shroud is welded on the blades with either a full penetration or fillet weld.
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Weld joint along blade from inlet to outlet.
Reverse Engineering
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Air compressor rotor impellers reverse engineered, brought back to OEM specification and manufactured in-house.​
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Impeller reverse engineered and developed from scan data.​
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Expansion turbine rotor 3D scanned, reverse engineered and manufactured.​
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Refurbishment
We receive numerous pump and valve components that is in serious need of refurbishment where we would machine back important location diameters and worn areas, weld repair the machined locations and machine back to OEM specification.
​Refurbished pump volute and cover
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Pelton runner refurbishment.​
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After
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Leak off valve refurbishment.​
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Before
After