Introduction

With over 20 years of industry experience, GC Abrasives specializes in manufacturing high-performance abrasive products for cutting, grinding, deburring, weld preparation, and surface finishing applications. Our product range includes ceramic cutting discs, grinding wheels, flap discs, fibre discs, coated abrasives, non-woven abrasives, wire brushes, and diamond tools, all manufactured according to EN12413 safety standards.

This guide explains the six core metal fabrication processes and provides practical recommendations on selecting the right abrasive solutions to maximize productivity, improve surface quality, and reduce overall operating costs.

What Is Metal Fabrication?

Metal fabrication is the process of transforming raw metal materials into finished products through cutting, forming, joining, and finishing operations.

Common industries include:

• Automotive

• Aerospace

• Construction

• Shipbuilding

• Agricultural equipment

• Energy and power generation

• Stainless steel fabrication

• General manufacturing

The six major metal fabrication processes are:

1. Cutting

2. Metal Stamping

3. Welding

4. Extrusion

5. Forging

6. Casting

1. Metal Cutting

Metal cutting is the first stage of almost every fabrication process.

Common methods include:

• Abrasive cutting

• Laser cutting

• Plasma cutting

• Band sawing

• Mechanical shearing

Recommended GC Abrasives Products

Ultra-Thin Cutting Discs

Suitable for:

• Carbon steel

• Stainless steel

• Aluminum

• Cast iron

Benefits:

• Fast cutting speed

• Reduced burr formation

• Minimal heat discoloration

• Lower material loss

Large Diameter Cut-Off Wheels

Designed for:

• Petrol cut-off saws

• Bench-mounted chop saws

• Structural steel fabrication

2. Metal Stamping

Metal stamping uses dies and punches to produce high-volume sheet metal parts.

Applications:

• Automotive body panels

• Appliance components

• Electronic enclosures

• HVAC systems

Surface Finishing After Stamping

Stamped parts typically require:

• Edge deburring

• Burr removal

• Surface conditioning

Recommended products:

• Ceramic flap discs

• Non-woven surface conditioning discs

3. Welding

Welding is the most widely used joining process in modern manufacturing.

Major welding processes:

• MIG welding

• TIG welding

• Stick welding

• Flux-cored welding

Pre-Weld Surface Preparation

Remove:

• Rust

• Mill scale

• Paint

• Contaminants

Recommended products:

• Non-woven discs

• Ceramic flap discs

• Wire brushes

Post-Weld Finishing

Operations include:

• Weld bead blending

• Slag removal

• Spatter cleaning

GC Abrasives ceramic flap discs provide:

• Cooler grinding

• Longer life

• Better finish quality

4. Extrusion

Extrusion forces heated metal through a die to create continuous profiles.

Most common material:

Aluminum

Applications:

• Window frames

• Curtain walls

• Solar panel structures

• Heat sinks

Abrasive Solutions

Before anodizing or powder coating:

• Silicon carbide sanding belts

• Aluminum oxide coated abrasives

5. Forging

Forging produces high-strength components through compressive force.

Applications:

• Crankshafts

• Gears

• Connecting rods

• Industrial shafts

Post-Forging Operations

• Flash removal

• Surface grinding

• Edge blending

Recommended products:

• Grinding wheels

• Fibre discs

• Ceramic flap discs

6. Casting

Casting produces complex shapes through molten metal solidification.

Applications:

• Pump housings

• Engine blocks

• Valve bodies

• Turbine components

Fettling Operations

After casting:

• Gate removal

• Flash removal

• Surface cleaning

Recommended products:

• Depressed centre grinding wheels

• Fibre discs

Cutting Disc vs Grinding Disc

One of the most common mistakes in fabrication shops is using the wrong disc.

Cutting Discs

Characteristics:

• Thickness: 1–3 mm

• Used at 90°

• Designed for straight cuts

• Cannot withstand side pressure

Applications:

• Pipe cutting

• Rebar cutting

• Sheet metal cutting

Grinding Wheels

Characteristics:

• Thickness: 4–8 mm

• Used at 15–30°

• Built for side pressure

Applications:

• Weld grinding

• Beveling

• Surface preparation

Never use a cutting disc for grinding.

Specialized Abrasive Disc Types

Flap Discs

Best for:

• Weld blending

• Edge deburring

• Surface finishing

Available grains:

• Aluminum oxide

• Zirconia alumina

• Ceramic alumina

Fibre Discs

Ideal for:

• Heavy stock removal

• Stainless steel grinding

• Carbon steel finishing

Wire Brushes

Used for:

• Rust removal

• Paint stripping

• Weld cleaning

Non-Woven Abrasives

Suitable for:

• Surface conditioning

• Satin finishing

• Oxide removal

Diamond Tools

Recommended for:

• Concrete

• Stone

• Ceramics

• Masonry

Material-Specific Abrasive Selection

Stainless Steel

Recommended:

• Ceramic cutting discs

• Ceramic flap discs

Advantages:

• Reduced heat generation

• Less discoloration

• Longer life

Carbon Steel

Recommended grains:

• Aluminum oxide

• Zirconia alumina

• Ceramic alumina

Aluminum

Challenges:

• Wheel loading

Recommended:

• Silicon carbide abrasives

• Open-coat sanding belts

Cast Iron

Recommended:

• Silicon carbide

• Ceramic abrasives

Titanium Alloys

Recommended:

• Ceramic alumina

Benefits:

• Cooler cutting

• Higher productivity

Understanding Abrasive Grain Technologies

Aluminum Oxide

General-purpose grain for:

• Carbon steel

• Wood

• Mild steel

Silicon Carbide

Suitable for:

• Aluminum

• Brass

• Bronze

• Glass

Zirconia Alumina

Advantages:

• Self-sharpening

• High stock removal

Ceramic Alumina

Premium performance grain technology.

Benefits:

• Up to 50% faster cutting

• Up to 6 times longer life

• Lower grinding temperatures

Safety Practices for Cutting and Grinding

Always:

✔ Inspect discs before use

✔ Match disc speed ratings

✔ Wear face shields and safety glasses

✔ Use hearing protection

✔ Store wheels in dry environments

✔ Replace damaged discs immediately

Why Choose GC Abrasives?

GC Abrasives supplies complete abrasive solutions for industrial customers worldwide.

Our advantages include:

• Over 20 years of manufacturing experience

• EN12413 certified products

• Ceramic grain technology

• OEM and private-label services

• Custom formulations

• Technical support

• Free samples for qualified buyers

Whether you are cutting stainless steel, grinding welds, preparing aluminum surfaces, or finishing cast components, GC Abrasives delivers reliable abrasive solutions designed to increase productivity and reduce total operating costs.

Frequently Asked Questions

What abrasive products does GC Abrasives manufacture?

Cutting discs, grinding wheels, flap discs, fibre discs, coated abrasives, non-woven abrasives, wire brushes, and diamond tools.

Are your products EN12413 certified?

Yes. All bonded abrasive products are manufactured according to EN12413 standards.

Do you provide OEM services?

Yes. We offer private-label manufacturing and customized packaging solutions.

Can I request samples?

Yes. Free samples are available for qualified distributors and industrial customers.

Do you develop custom formulations?

Yes. Our engineering team can tailor products to specific applications and market requirements.