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Stowlin Croftshaw has introduced the Granodine 606 process, which simultaneously degreases and phosphates steel, aluminium and zinc surfaces to create an corrosion-protective base for paint.

Applied by a three- or four-stage conveyor process or in a multi-stage cabinet wash, it leaves surfaces with a lightweight blue phosphate coating which provides corrosion protection and a good base for paint.

Immersion processing can also be undertaken.

Granodine 606 can be used to treat galvanised sheet, zinc die-castings (Mazak), electro-zinc (Zintec), steel and aluminium, together or separately.

The degreasing action cleans the metal surface clean of oils and grease, enabling the phosphating action to convert the metal.

The process’s specially formulated detergents give powerful degreasing with minimum foaming and at low temperatures.

Unlike other phosphate processes, additional detergents are rarely needed and the resulting phosphate coating has a weight of 0.2 to 0.4g/m2.

Degreasing and conversion takes place in a multi-stage conveyor or box-wash process, involving cleaning and phosphating by spray application of the Granodine 606 solution followed by water rinsing and a final Deoxylyte rinse.

Application temperature is between 25-50C and spraying at 1-2 bar takes just 1-4min.

Granodine 606 is supplied as a concentrated liquid which lends itself to easy handling by manual or automatic control systems.

Dilution is approximately 11 litres in a 1000-litre water bath.

Stowlin Croftshaw

The Stowlin Croftshaw group has more than 75 years' experience supplying high-quality innovative cleaning solutions, processes, metal cleaning machines, basic chemicals and solvents.

We are committed to the responsible and ethical management of our products and this combined with our unrivalled technical expertise, make us the supplier of choice.

As well as offering a comprehensive range of commodity chemicals and solvents, we also supply our own trademark speciality cleaning and phosphating products, such as Cool-Phos and Vaposol. In addition, we supply advanced aqueous, non-aqueous and vapour degreasing products in our capacity as national distributors for world-class companies such as Petroferm, Mykal and Henkel.

We offer a wide range of ancillary services including contract blending and packing, controlled waste disposal, supply and installation of metal cleaning equipment and chemical storage tanks, in-house technical support and on-site demonstration facilities. We also offer advice with respect to current legislation.

Our market sectors include many small to large companies operating in the electronics, aerospace, medical, optical and military industries. Other areas include general metal treatment, food processing, effluent treatment, janitorial, hygiene and swimming pool chemistry.

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