RAG – Stock Removal

1

Right  Angle Grinder (RAG) – Stock Removal 

 

Stock removal in metal fabrication follows the cutting-off and or grinding stages. It aims to shape the part, for example by removing weld seams and excess material prior to subsequent surface improvement steps such as blending, refining and deburring. 

The typical abrasive grit range will vary from 36 (rough stock removal) to 120 grit (intermediate stock removal). The choice of which abrasive to use for the stock removal step will depend on a number of factors :-

  • The incoming part condition; i.e. will a coarse or finer stock removal solution be required?
  • The material being ground; the more challenging or difficult to grind materials will usually require a high performance abrasive solution.
  • The number of parts being processed through the fabrication shop. The use of higher powered angle grinders with performance abrasives will speed up processing times to improve efficiency.

 

Download the RAG brochure to learn more +

 

Most fabricators will use an angle grinder in their day-to-day work to cut and prepare metal surfaces, which is why Saint-Gobain Abrasives have developed a number of options to ensure the right product is available for the right job. The Right Angle Grinder (RAG) process helps metal fabricators choose the correct product for metal preparation and fabrication, which can help to increase efficiency, minimise waste and add value to businesses that operate large scale production

 

Find your local stockist +

What product is right for me?

RIGHT ANGLE GRINDER PROCESS STAINLESS STEEL
  PERFORMANCE ECONOMY
2ed

STOCK REMOVAL

NORTON X-TREME R860
• 100% sharp Norzon grain
• Lower disc wear for longer grinding time
• Fast cut

 

 

NEW NORTON QUANTUM R928 MP
• Ideal for mid to heavy duty applications on stainless steel

 

NORZON FIBRE DISC F827
• High and regular cut rate
• NorZon abrasive with self-sharpening effect
  MID STEEL
  PERFORMANCE ECONOMY
 

NEW NORTON QUANTUM R928 MP
• Ceramic grain for an improved cut rate
• Supersize layer for a cooler cut and reduced heat generation

 

NORZON FIBRE DISC F827
• High and regular cut rate
• NorZon abrasive with self-sharpening effect

 

NORTON VULCAN ZIRCONIA
• Versatile product for rough grinding and de-burring on steel and stainless steel
• Self-sharpening zirconium abrasive grain

 

NORTON FIBRE DISC F100
• Tough & versatile aluminium oxide abrasive fibre discs for processing steel and metal alloys
  ALUMINIUM
  PERFORMANCE ECONOMY
 

VULCAN ZIRCONIA
• Versatile product for rough grinding and de burring on steel and stainless steel
• Self-sharpening zirconium abrasive grain

 

NORZON FIBRE DISC F827
• Excellent performance on hard aluminium alloys

NORTON VULCAN R265D
• Durable aluminum oxide abrasive grain
• Good material removal on low or medium power angle grinders

 

NORTON FIBRE DISC F100
• Aluminium oxide grain for good cut rate on soft aluminium alloys

 

 

Weld Removal To A Commercial Finish

The following Norton Quantum fibre disc is recommended for weld removal to a commercial finish on stainless steel (this would be after step 1 heavy duty grinding). 

 

STOCK REMOVAL

Norton Quantum fibre discs in grit P50 at 10-15° angle will remove the weld quickly. For faster material removal, an air-cooled back-up pad with grit P36 works best.
 

Back-up pads also available see page 30 for details.

 

 3

 

NORTON QUANTUM FIBRE DISC

DIA x H (mm) GRIT PK QTY ART NO.
115x22 36 25 66623327494
115x22 50 25 66623327496
125x22 36 25 66623327501
125x22 50 25 66623327502
150x22 36 52 66623381328
150x22 50 25 66261182088
180x22 36 25 66623327506
180x22 50 25 66623327507

 

 

Weld Removal To A Bright Finish (Stainless Steel)

STOCK REMOVAL

Norton X-Treme R860 flap disc in grit P60 is ideal for weld and stock removal.
Flap discs are particularly suited to this application as the constant erosion
of the backing allows new, sharper grain to be exposed during use, offering longer product life. As the backing is softer than that of a fibre disc, the surface finish will be better, reducing the number of further steps.

 5

 

NORTON X-TREME R860 FLAP DISC

DIA x H (mm) GRIT PK QTY ART NO.
115x22 60 10 78072726074
125x22 60 10 78072726077
180x22 60 10 78072726081

 

 

 

Non Ferrous Metal Preparation For Paint And Coatings

STOCK REMOVAL

NorZon F827 fibre discs in grit P60 are good option for non ferrous soft materials. Due to the soft nature of the material they need to be used with light and even pressure to avoid gouging and excess material removal.


For best results choose the medium density back-up pad, see page 30 for details.

 

 6

 

NORZON FIBRE DISC F827

DIA x H (mm) GRIT PK QTY ART NO.
115x22 60 25 63642539616
125x22 60 25 69957360057
180x22 60 25 63642533065

 

 

 

 

Previous steps of the RAG process are available.  Read more on Cutting off and grinding and scale removal.

For more information on the RAG process or the products contact your local sales rep or contact us here.