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Från zinkfosfatering till silanbehandling: Potentiell kostnadsbesparing i förbehandlingen hos Ålö AB
Umeå University, Faculty of Science and Technology, Department of Applied Physics and Electronics.
2015 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesisAlternative title
From Zinc-Phosphating to Silane Treatment : Potential economical gains in relation to pretreatment at Ålö AB (English)
Abstract [en]

The purpose of this thesis is to investigate if cost reductions can be accomplished by changing the pretreatment method from zinc-phosphating to silane at Ålö’s plant in Brännland.

A survey has been conducted to identify economic benefits and drawbacks of the two techniques. The survey, facilitated by chemical supplier, Chemetall, is in the form of an application for calculation of process and chemical parameters for the current process so that comparative results can be presented for evaluation in the form of prospective savings per annum in the event of a change of pretreatment method.

The zinc-phosphating technique is a conventional method, utilizing activation and crystallization steps, which, when correctly exercised, facilitates both good corrosion resistance and paint adhesion. Drawbacks of this method include high water and energy consumption, maintenance costs, and the generation of toxic waste that requires human handling and expensive disposal.

Silane pretreatment is a comparatively new method used by Ålö’s facilities in the USA and China, as well as established international automotive manufacturers. This method of pretreatment has developed the quality and stability aspects considerably, has the advantages of lower water and energy consumption and a non-toxic waste generating process. It is considered capable of fully replacing zinc-phosphating without compromising corrosion resistance or paint adhesion characteristics.

The most important conclusion from this thesis is that the silane pretreatment method is economically beneficial for Ålö at the current rate of production (21 333 front-loaders per annum), with an estimated cost reduction of 25 % or more than € 50 000 per annum. The results of this report also indicate a rise in economic benefits with silane pretreatment in the event of increased production rates.

This shows that although the silane pretreatment method entails the possibility of substantial annual cost reduction, further investigation in this field is required.

Place, publisher, year, edition, pages
2015. , 30 p.
, MA, 1429
Keyword [sv]
zinkfosfatering, silan, silanbehandling, silanteknik, förbehandling, förbehandlingsmetod, förbehandlingsteknik, kostnadsbesparing, Ålö AB, Ålö, Förbehandlingen
National Category
Production Engineering, Human Work Science and Ergonomics
URN: urn:nbn:se:umu:diva-101780OAI: diva2:802201
External cooperation
Ålö AB
Subject / course
Educational program
Bachelor of Science Engineering in Mechanical Engineering
2015-03-23, C331, Institutionen för tillämpad fysik och elektronik, Umeå universitet 901 87, Umeå, 13:00 (Swedish)
Available from: 2015-04-13 Created: 2015-04-12 Last updated: 2015-04-13Bibliographically approved

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