|
Avesta spray pickle gels are used to restore larger stainless steel surfaces that have been damaged by working operations such as welding, forming, cutting and blasting.
|
|
The spray pickle gel also removes welding oxides, the underlying chromium-depleted layer, micro-slag particles and other contaminants that may cause local corrosion.
To assist pickling, this process may sometimes be combined with some form of simultaneous mechanical treatment, for example brushing.
|
 |
|
After pickling, the workpiece should be thoroughly rinsed with clean water.
The best results are achieved by using a high-pressure water jet.
|
To avoid smut formation and instantly restore the protective chromium oxide layer, a final passivation/decontamination step (using Avesta 630 or 601) is recommended.
Avesta spray pickle gels follow the recommendations of ASTM A-380 A.1 and BS CP-312.
Avesta Classic products and application |
|
|
 Avesta Classic Spray Pickle Gel 204 is the original spray with an all-round consistency and very strong pickling effect. Avesta Classic Pickling Spray 204, is aimed for so called heavy duty applications, it offers an aggressive spray pickling result for larger stainless steel surfaces. It is suitable for tougher applications and high alloyed steel such as 904, duplex and SMO.
|
 |
Avesta BAT products and application |
Environmental Management using Best Available Techniques ( BAT ) are required under ISO 14000 and EC Directive 96/61, in order to create a safer working environment.
The ISO 14000 is primarily concerned with "environmental management". This means what the organization does to:
- minimize harmful effects on the environment caused by its activities, and to
- achieve continual improvement of its environmental performance
This definition implies that BAT not only covers the technology used but also the way in which the installation is operated, to ensure a high level of environmental protection as a whole. BAT takes into account the balance between the costs and environmental benefits.
|
| Avesta BlueOneä Spray Pickle Gel 230 is a new unique patented pickling spray that creates a better working environment. BlueOne makes it possible to pickle virtually without the toxic nitric fumes that are normally formed during pickling. For optimum results and maximum reduction of NOx emissions, BlueOne spray pickle gel should be used at temperatures ranging from 10 to 30°C. |
 |
| Avesta RedOneä Spray Pickle Gel 240, is a new, improved product that has been developed for use with standard steel grades such as ASTM 304 and 316. The superior adhesiveness of this new gel, which is less aggressive than Classic spray pickle gel 204, contributes to lower consumption, making it more economical. |
 |
| Avesta GreenOneä spray 220 a new spray that makes it possible to pickle bright or sensitive surfaces without dulling or damaging the finish. |
 |
Equipment
Avesta Spray Pickle Pump SP-25 is a low-pressure membrane pump made of acid-resistant parts adapted for spraying Avesta pickling gels and chemicals.
 Avesta-BML Neutralising Facility - is an efficient batch-working neutralising unit for treatment of pickling acids and rinse water.
|