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CAB ASSEMBLIES
STICK & BOOMS
LOWER & UPPER FRAME
BUCKETS

Application Focus

Cab construction consists of a complicated combination of thin automotive sheet metal and thick and heavy structural weldments to provide roll over protection.

Welding challenges

Thin Metal

  • Ability to handle varying gap conditions on sheet metal
  • Low heat input & low distortion , very low spatter

Thick Metal

  • Very robust and defect free ROP welds, undercut
  • Proper ability to weld flare bevels
  • Joining different thickness
  • Proper weld size

Arc Welding Overview：

Thin Metal Thick Metal
Thickness 0.8-3mm 3-19mm
Equipments POWER WAVE® S350 POWER WAVE® S350/ OPTIMARC® 500P
Welding Process STT®/RAPID X® Pulse CV/Tandem MIG
Consumables JM®-56 1.0/1.2 JM®-56/JM-58
MW-70MC 1.2/1.4/1.6
 

Consumable：

  • LINCOLN®’S stringent control of chemical composition insures that the process has good repeat-ability and the best quality resulting in faster travel speeds, less spatter and lower distortion.

Welding Process：

  • LINCOLN® can meet your demands on the multiple processes. CV spray& Pulse can meet your demand on low spatter. SYNCHRONIZED TANDEM MIG® has good performance on high deposition. HOT TANDEM MIG® can provide excellent low heat input and high deposition. 

Application Focus

Sticks and Booms are very critical fabrications has they experience a tremendous amount of loading and stress.    Generally, need to perform a complete UT inspection of the finished boom and stick weldments.

Welding challenges

  • consistent penetration
  • 100 % defect free using UT inspections
  • no undercut allowed， low spatter
  • Tandem Mig requires good control of arc and well developed wave forms
  • good weld profile are necessary to aid in fatigue resistance

Arc Welding Overview：

  • Base Metal：Mild steel- 8mm to 12mm thickness
  • Process: Tandem Mig, Pulse, & CV
  • Consumable: MERIT® S-3, JM® -53, JG™-51 (ER70S-3) & MERIT® S-6, JM®-56, JM® -70, RM-56, RM-52, JG™-56, UltraMag S6 (ER70S-6) use for 85 -90%Ar / 10-15%CO2 gas
  • Consumable: MERIT® S-G, JM®-58, JG™-50 (ER70s-G) use for 100% CO2 gas
  • Drum package: 250kg – 300kg drums or boxes (all twist free)

LINCOLN® Advantage

  • Equipment: POWER WAVE® S500, OPTIMARC®CV 500P, POWER WAVE® S700, IDEALARC® DC 600
  • Consumable：LINCOLN®’S stringent control of chemical composition insures that the process has good repeated ability and the best quality resulting in faster travel speeds, less spatter and lower distortion.
  • Welding Process：LINCOLN® can meet your demands on the multiple processes. CV spray& Pulse can meet your demand on low spatter. SYNCHRONIZED TANDEM MIG® has good performance on high deposition. HOT TANDEM MIG® can provide excellent low heat input and high deposition.

Application Focus

The lower frame is the main structure or backbone for the entire excavator. The track roller frames are bolted to each side and the upper frame swivels on the large ring located in the center of the lower frame. Because so much is literally riding on this weldment, the quality of the welds is very important.

Welding challenges

  • consistent penetration
  • 100 % defect free using UT inspections
  • no undercut allowed， low spatter
  • Tandem Mig requires good control of arc and well developed wave forms
  • good weld profile are necessary to aid in fatigue resistance

Arc Welding Overview：

  • Base Metal: Mild steel- 8mm to 18mm thickness

  • Process: Tandem Mig, Pulse, & CV

  • Consumable: MERIT® S-3, JM® -53, JG™-51 (ER70S-3) & MERIT® S-6, JM®-56, JM® -70, RM-56, RM-52, JG™-56, UltraMag S6 (ER70S-6) use for 85 -90%Ar / 10-15%CO2 gas

  • Consumable: MERIT® S-G, JM®-58, JG™-50 (ER70s-G) use for 100% CO2 gas

  • Drum package: 250kg – 300kg drums or boxes (all twist free)

  • Equipment: POWER WAVE® S500, OPTIMARC®CV 500P, POWER WAVE® S700, IDEALARC® DC 600


Consumable：

  • LINCOLN®’S stringent control of chemical composition insures that the process has good repeatability fo robot welding. Variations chemistry can greatly influence the arc performance resulting in undercut, bead roll over and Si slag inclusions. LINCOLN® drums are designed to insure twist free and trouble free feeding

Welding Process：

  • CV Spray & Pulse- Spatter free process.
  • SYNCHRONIZED TANDEM MIG® – High Deposition Process.
  • Hotwire Tandem Mig – Low heat input & High deposition process.

Application Focus

The bucket is the “work end” of the excavator and is in many ways considered a consumable part. The size and shape of the buckets vary greatly depending on the size of the excavator and the specified performance payload.

Welding challenges

  • Complex shapes, Varying fit up
  • Proper preheat and control of interpass temperature
  • Low hydrogen deposits
  • Good weld profile ( no undercut, equal legged, flat )
  • Low spatter, good penetration
  • Proper training for operators, 85 -90%Ar / 10-15%Co2 gas

Arc Welding Overview：

  • Base Metal: Mild steel- 23% carbon

  • Process: Pulse, & CV

  • Consumable: MERIT® S-3, JM® -53, JG™-51 (ER70S-3) & MERIT® S-6, JM®-56, JM® -70, RM-56, RM-52, JG™-56, UltraMag S6 (ER70S-6)

  • Consumable: MERIT® S-G, JM®-58, JG™-50 (ER70s-G) 1.2mm, 1.4mm & 1.6mm wire

  • Consumable: PRIMACORE® LW-75 2.0 mm, OUTERSHIELD® MC710-H1.2mm

  • Equipment: POWER WAVE® S500, OPTIMARC® CV 500P

Consumable：

  • LINCOLN®’S MERIT® consumables add a greater advantage in that they both exhibit a demonstrable ability to transition into a spray transfer at lower energy levels then competitive GMAW filler metals. More importantly, because of our tight control of wire chemistry, their transition point is very consistent which means there is very little variability in welding.
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