Abstract No.:
3717

 Scheduled at:
Wednesday, May 21, 2014, Hall A 2:00 PM
Comparision Thermal Spraying VS. other Surface Technologies


 Title:
A case study of the potential of wire arc spraying as a cost effective alternative to established weld overlay process

 Authors:
Peter Tommy Nielsen* / FORCE Technology, Denmark
Carsten Jensen/ FORCE Technology, Denmark
Carsten Jensen/ Mølbro A/S, Denmark
Paul Bräsel/ Mølbro A/S, Denmark

 Abstract:
The well established and numerous weld overlay processes are in general effective and produce coatings meeting the requirements of intended usage. However, problems and requests within the industries using weld overlay processes are widespread, but they have one thing in common. The limiting factors of process speed as well the relative high process cost.

This paper will focus on the possibilities of using wire arc spraying as an alternative to MAG overlay welding in an established production line of devices used for farming purposes, i.e. ploughing. This can optimize the production of with a factor of 5 or more and reduce the need of process steps when using weld overlay. The primary objective is to reach similar or better coating quality when using wire arc spray.

A minor material study, where the focal point is cost efficiency, is implemented targeting high wear resistance, as well a high tolerance of intense and random impact by various sized objects. The coated pieces exposed to field tests as the primary ranking method in fields with well defined composition. Furthermore the coatings will be metallurgical examined using light optical (LOM) and scanning electron microscopy (SEM) to interpret and support the field tests.


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