Author(s):
1. Plavka Skakun, Armenia
2. Miroslav Plancak, Faculty of Technical Sciences, Department for Production Engineering, Serbia

Abstract:
Friction between die and workpiece material has influence in almost every metal forming process. Reduction of friction leads to reduction of required forming load of certain process. It also influences in positive way die wear (it reduces it) and quality of the final product. That is the reason why research of different kind of lubricants is very important and has great impact on metal forming processes. Conventionally, in bulk cold metal forming processes, coating of zinc phosphate is applied. But zinc phosphate coating is not environmental friendly, due to sludge accumulation in baths and its associated content of heavy metals. That is the reason why new, environmentally harmless lubricants have been developed. In this paper, determination of friction coefficient for different lubricants is presented. Both environmentally harmless and environmentally hazardous lubricants were used. The experimental method for friction coefficient determination was ring compression test. Results of the test were used to compare values of friction coefficient for different type of lubricants. Four different types of lubrication were applied.

Key words:
friction, metal formign processes, environmetal friendly lubricants

Thematic field:
PRODUCTION TECHNOLOGIES AND ENGINEERING

Opening paper:
Yes

Date of abstract submission:
17.03.2011.

Number of visits:
819

Conference:
11^th International Conference on Accomplishments in Mechanical and Industrial Engineering

Applied paper from author