Mecanical-welding

For over thirty years, Groupe CMA has been producing complete assemblies, press tooling and machine frames using mechanical welding techniques on thick high strength steel, aluminum or stainless steel materials.

Large-scale mechano-welded components
With over 2,000 tons of materials cut on an in-house basis, the experience and exceptional industrial means of Groupe CMA make it a major player in the French sub-contract manufacturing services for large-scale mechano-welded structures, components and tooling :

• Frames for special machinery and machine tools,
  
• Specific tooling,
• Conveyor belts,
• Transfer trolleys,
  
• Frames for transport and handling equipment,
• Frames for press feed lines,
• Slitting lines,
• Etc.

Groupe CMA also uses specific material throughput equipment to optimize its production lead-time.

Qualifications
Professional qualification of our welding team (WQ – Welding Qualification)

• Standard : NF EN 287-1:2004 + A2 :2006
  
• Welding procedures : 135 and 136
  
• Welding Procedures Qualification Record (WPQR)
• Standard : NF EN ISO 15614-1:2005 + amendment A1:2008
  
• Qualified welding procedures : C15 – C50 – C100
  
• Range of approval : Gr1.1 – Gr1.2 – Gr1.3 – Gr1.4 steel, 3 to 200mm thick.
  

Industrial means
Cutting and folding :

• 1 CN gantry oxygen-cutting machine 12000x3000 – 4 blow lamps
  
• 1 CN gantry oxygen-cutting machine 10000x2500 – 4 blow lamps
  
• 1 guillotine shears 4000x12,
  
• 1 folding press
  

Boilerwork, mechanical welding  :

• 6 overhead bridge cranes, max. lift 30 tons (60 tons forthcoming)
  
• Assemblies on 6000x2400 granite plates and cast-iron plates
  
• 10 2-ton jib-cranes
  
• SAF 600 Amps welding stations
  
• 400 Amps TIG welding stations
  
• Pulse-arc welding stations (stainless steel and aluminum)
  
• Pulse-arc Lincoln Electronic® 500 amps
  

Stabilizing

• In-house vibration stabilization or thermal stabilization by our partners