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Luxfer Values: Integrity - Customer Focus - Can-Do Attitude - Teamwork

Luxfer Riverside

Cylinder manufacturingoperations

July 2009

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Major process steps

Cup press Lube / draw / wash Large liner tube inspection Small liner spinning Large liner spinning Small liner heat treatment Large liner heat treatment Machining

Winding Sanding Hydrostatic testing Gel coating

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Cup press

Converts aflat circularplate into ashort cupwith a closed

base.

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Lube / draw /

wash A three-stageprocesslubrication,drawing and

washing.

Creates a longshell with a thinwall (whileretaining the

necessarily thickbase area), aswell as a thickopen end for theneck.

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Large liner tube

inspection All aluminumtube for largelinermanufacturing is

inspected.

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Small liner

spinning

High-

temperatureprocess:spinning theopen end of theshell to form aneck.

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Large liner

spinning

High-

temperatureprocess:spinning theopen end of theshell to form aneck.

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Small liner heat

treatTwo-stageheatingprocess, withan interimquench, tostrengthen

and toughenthe aluminum.

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Large liner heat

treatTwo-stageheatingprocess, withan interimquench, tostrengthen

and toughenthe aluminum.

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Machining

High-speed,CNC-

controlledmachining toform thethread,

including theO-ring glandarea.

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Winding

Application ofcarbon fiber, andthen glass fiberalong with epoxy

resin, to provide90% of thestrength of thefinished cylinder.

Normally then

heated by a low-temperatureoven toaccelerate curingof the cylinder.

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Sanding

An automatedsandingprocessremovessurplus resin

and fibers.

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Hydrostatic test

Every cylinderishydrostaticallytested to verifythat it hasbeen

manufacturedcorrectly.

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Gel coat

A final layer of

sacrificial gelcoat is appliedto provide asuperior

aestheticfinish.

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Completed

cylinders

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Luxfer Riverside

Cylinder manufacturingoperations

July 2009