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Dobson Gaskets is a leading UK manufacturer of gaskets and sealing products

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+44 (0) 1535 607257
 

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E Dobson and Co [Gaskets] Ltd
Unit 1
Holme Mill Ind Estate
Fell Lane
Keighley
West Yorkshire
BD22 6BN

Call Us Now

+44 (0) 1535 607257

Call Us Now

+44 (0) 1535 607257
 

Opening times

Mon - Thur 8.00 - 17.00
Fri 8.00 - 16.00
In-house nitrogen generator for the laser cutter

We’re proud to announce the recent implementation of an advanced in-house nitrogen generator, marking a significant milestone in our pursuit of operational sustainability.

Traditionally reliant on external suppliers for nitrogen, we can now harness the power of on-site nitrogen generation, ensuring an uninterrupted, on-demand supply of high-purity nitrogen gas for our precision laser cutter.

By generating nitrogen on-site, we are reducing operational costs, streamlining laser-cutting processes, and reducing carbon emissions associated with nitrogen tank transportation.

Why Use Nitrogen for the Laser Cutting?

A fibre laser cutter uses a powerful beam of light to cut through metal. When used without what is known as laser-assist gas the metal gets hot and melts, creating a rough surface around the cut. To prevent this, high-pressure nitrogen or oxygen is blown onto the metal alongside the laser, helping remove the melted material for a cleaner cut.

Due to its properties as an inert gas, nitrogen provides an environment for the lasers to work without any oxygen thus preventing oxidisation from occurring. Oxidisation can create a carbon layer on the cut edge, causing problems like a rough product finish and issues with coatings or paint sticking to the surface.

How Nitrogen Generation Works

Nitrogen is generated and prepared for use with our laser cutter in three steps:

air purifier

STEP ONE: A specialist air compressor draws in ambient air from the surroundings. This air contains approximately 78% nitrogen and 21% oxygen, along with trace amounts of other gases. The incoming air goes through a series of filters to remove impurities, dust, and moisture. This step is crucial to ensure the production of high-purity nitrogen.

nitorgen filter 

STEP TWO: The filtered air is then passed through the nitrogen gas generator, which uses a Carbon Molecular Sieve (CMS) to adsorb oxygen molecules. This process separates the oxygen and nitrogen molecules as the CMS adsorbs the oxygen molecules more readily than nitrogen, allowing the nitrogen to pass through and become the product gas

 nitrogen compressor

STEP THREE: The nitrogen gas, now with an increased concentration of nitrogen due to the separation process, is collected and stored in a holding tank. This tank is linked to a compressor that then pumps the nitrogen into the pressurised tanks that supply the laser-cutting machine.

laser cutter

Greener Processes

"We are thrilled to unveil our new in-house nitrogen generator, which reflects our commitment to sustainability and is a game-changer for our laser cutting operations," says Peter Jeffrey, Managing Director at Dobson Gaskets. “By eliminating the need for external suppliers, we can now enjoy greater control and flexibility in managing our nitrogen supply chain.”

"This investment allows us to optimise our processes, reduce costs, and align our operations with our sustainability goals. It reinforces our dedication to providing cutting-edge solutions while minimising our environmental impact."