language

Home

Products

Submerged Arc Welding Overlay Plate

Submerged arc overlay plate is a wear-resistant composite plate produced by using submerged arc welding (SAW) technology

Keywords:

Submerged Arc Welding Overlay Plate

Category:

Hardfacing Wear-resistant Plate

Inquiry Now

Send E-mail

File Download

sales1@tedaganghua.com

+86 22 86896631、+86 15822676888

Product Details

Submerged Arc Overlay Plate: Flux-Shielded Welding Process, Surface Quality & Application Guide

Submerged arc overlay plate is a wear-resistant composite plate produced by using submerged arc welding (SAW) technology to deposit a high-alloy wear layer onto a steel backing plate. Compared with open arc hardfacing, the submerged arc process uses a granular flux layer to cover the welding arc, creating a stable welding environment with low spatter, smooth surface appearance, and excellent production consistency.

The selection between submerged arc overlay and open arc overlay depends on application requirements. When surface smoothness, dimensional consistency, and controlled thin overlay thickness are important, submerged arc welding can provide significant advantages.

How Does Submerged Arc Overlay Welding Work?

Submerged arc welding is an automatic or semi-automatic welding process where the welding arc is completely covered by a layer of granular flux. The flux protects the molten metal from atmospheric contamination while also controlling the chemical composition of the deposited alloy.

Flux coverage: Prevents direct exposure of the arc to air.
Stable heat input: Produces consistent welding penetration.
Low spatter: Improves working conditions and material utilization.
Controlled deposition: Provides uniform overlay thickness.

Because the arc is hidden beneath the flux layer, operators do not experience strong arc glare during welding. This makes SAW suitable for automated production lines and large-scale industrial manufacturing.

Submerged Arc vs Open Arc Overlay Welding

Comparison	Submerged Arc Overlay	Open Arc Overlay
Shielding Method	Granular flux coverage	Self-shielded flux cored wire
Surface Appearance	Smoother welding bead surface	More visible welding wave pattern
Carbide Content	Moderate, depends on alloy design	Typically higher carbide concentration
Dilution Rate	Generally higher due to heat input	Usually lower with optimized parameters
Production Method	Best for automated production	Flexible for different plate sizes

Why Choose Submerged Arc Overlay Plate?

Submerged arc overlay plates are selected when surface quality and production consistency are more important than maximum carbide concentration. The controlled welding environment creates a stable overlay structure suitable for applications requiring smoother contact surfaces.

Feature	Engineering Advantage
Smooth Surface	Reduces material flow resistance and improves equipment contact performance
Uniform Thickness	Improves installation accuracy and service consistency
Stable Welding Process	Suitable for continuous industrial production
Lower Surface Finishing Requirement	Reduces additional machining operations

Applications Suitable for Submerged Arc Overlay

Submerged arc overlay technology is commonly selected for applications where the wear surface needs to maintain smoothness and stable dimensions.

Screen plates and screening equipment
Scraper blades and conveyor components
Material handling equipment requiring smooth sliding surfaces
Industrial liners with controlled thickness requirements
Large-area wear protection components

Recommended Overlay Thickness Range

Compared with heavy-duty open arc hardfacing plates, submerged arc overlay is often suitable for thinner wear layers where surface finish and dimensional control are priorities.

Overlay Thickness	Typical Application
2-3 mm	Moderate abrasion and smooth surface requirements
3-5 mm	General industrial wear protection
Above 5 mm	Heavy abrasion applications requiring engineering evaluation

Flux Management in Submerged Arc Welding

The quality of submerged arc overlay depends heavily on proper flux management. Since flux directly affects arc stability and alloy protection, production facilities must control storage, recycling, and preparation procedures.

Flux drying: Removes moisture that may cause welding defects.
Flux recycling: Reduces waste and maintains production efficiency.
Flux screening: Removes contamination and oversized particles.
Proper storage: Prevents humidity absorption before welding.

Submerged Arc CCO Plate vs Open Arc CCO Plate Selection

Requirement	Recommended Process
Maximum abrasion resistance	Open arc overlay
Smooth wear surface	Submerged arc overlay
Large custom shapes	Open arc provides flexibility
Automated mass production	Submerged arc provides consistency
Thin overlay requirements	Submerged arc is often preferred

Quality Inspection of Submerged Arc Overlay Plate

A reliable submerged arc overlay plate requires inspection of both the welding layer and the steel backing plate. Common quality checks include:

Overlay thickness measurement
Hardness testing across the wear surface
Visual inspection of welding beads
Metallographic examination of carbide distribution
Bonding quality inspection

Industrial Wear Plate Solutions

Teda Ganghua provides customized chromium carbide overlay wear plate solutions for industrial abrasion applications. The company supports different manufacturing processes, thickness combinations, cutting services, and fabrication requirements according to equipment operating conditions. More information is available at submerged arc overlay plate.

Frequently Asked Questions

Q1: What is the main advantage of submerged arc overlay plate?

The main advantage is a smoother and more uniform wear surface produced through flux-shielded welding, making it suitable for applications requiring better surface quality.

Q2: Is submerged arc overlay more wear resistant than open arc overlay?

Not always. Open arc overlay often achieves higher carbide concentration, while submerged arc overlay focuses more on surface quality and production consistency.

Q3: Why is flux important in submerged arc welding?

Flux protects the welding pool, stabilizes the arc, controls alloy transfer, and helps achieve consistent overlay quality.

Q4: Can submerged arc overlay plates be used for mining applications?

Yes. They can be used in mining applications when surface smoothness, dimensional stability, and controlled abrasion resistance are required.

Q5: How do I choose between submerged arc and open arc overlay?

Selection depends on operating conditions. Severe abrasion requiring maximum carbide content often uses open arc, while applications requiring smoother surfaces and consistent production may choose submerged arc.