Industrial Plants

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Automatic Anodising Plant that is used to increase the thickness of the natural oxide layer on the surface of metal parts. Aluminium alloys are anodized to increase corrosion resistance and surface hardness, as well as to allow dyeing (colouring), improved lubrication, or improved adhesion. Different anodizing processes include hard anodizing, chromic acid anodizing (CAA), sulphuric acid anodizing (SAA), boric sulphuric acid anodizing (BSAA), tartaric sulphuric acid anodizing (TSAA) and phosphoric acid anodizing (PAA), all of which are made possible by Galvatek anodizing plants.

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We are engaged in offering quality product to our clients. Our range of all products is widely appreciated by our clients.

Product Details:

We are engaged in offering quality product to our clients. Our range of all products is widely appreciated by our clients.

Product Details:

We are engaged in offering quality product to our clients. Our range of all products is widely appreciated by our clients.

Product Details:

Introduction: Typically, it is difficult to achieve good adhesion between a paint coating and fresh steel sheet. For this reason, it is customary to apply some type of intermediate layer, a pretreatment, to develop good long-term performance. Not only does the pretreatment improve the mechanical adhesion between the paint and the zinc coating, but it also improves the resistance to blistering and loss of paint adhesion during exposure to corrosive environments. In the case of steel sheet, the need for a pretreatment to achieve good initial paint bonding is less critical, but a pretreatment is still beneficial to achieve good resistance to loss of paint adhesion when the product is exposed to a corrosive environment.

Phosphate Treatments : 

• The most commonly applied paint pretreatment for developing good bonding qualities between paint and the steel sheet is zinc phosphate. In addition to the excellent effect that a phosphate coating has on paint adhesion, it also aids to decrease, often dramatically, the tendency for paint disbondment during subsequent atmospheric exposure in a corrosive environment.
• Phosphate coatings can be applied to the steel sheet while it is in coil form by either the steel manufacturer or a coil coater (manufacturer of prepainted sheet), or it can be applied to the cut sheet or fabricated article by the end-use manufacturer.
• The usual phosphate process involves several steps, both if the coating is applied on a coil line or by the part manufacturer. If there are oils present on the surface of the steel, the first step is the removal of the oil by degreasing. This might involve cleaning with the use of an aqueous, alkaline cleaning solution or by other forms of degreasing with the use of solvents. Preferably, if the phosphating is done on a coil processing line, the next step involves the use of a Typically, the final rinse contains chromates for enhanced corrosion protection.

The steps in a 10-stage zinc phosphating operation:

• Hot Water Rinse
• Knock-off-Degrease
• Degrease
• Water Rinse – I
• Water Rinse – II
• Activation
• Phosphating
• Rinse – III
• Rinse – IV
• Drying