The effect of lubricants on deep drawability of zinc-coated steel sheets

1995 ◽  
Vol 7 (3) ◽  
pp. 273-283 ◽  
Author(s):  
Masayoshi Muraki ◽  
Hideo Ide ◽  
Kazuo Tagawa ◽  
Tamotsu Nakamura
Keyword(s):  
Coated Steel ◽  
Deep Drawability ◽  
Steel Sheets ◽  
Zinc Coated Steel

Frictional Behaviour of Lubricants during Deep Drawing and Ironing Processes for Zinc-Coated Steel Sheets

1996 ◽  
Vol 210 (3) ◽  
pp. 189-197 ◽  
Author(s):  
M Muraki ◽  
K Tagawa ◽  
H Ide ◽  
T Nakamura
Keyword(s):  
Deep Drawing ◽  
High Hardness ◽  
Alloy Layer ◽  
Coated Steel ◽  
Contact Ratio ◽  
Friction Modifiers ◽  
Deep Drawability ◽  
Steel Sheets ◽  
Zinc Coated Steel ◽  
Frictional Behaviour

Frictional behaviour of lubricants during the deep drawing and the ironing processes was studied for two types of zinc-coated steel sheets at low speeds. Deep drawability of galvannealed steel sheet (GA) was significantly improved by an increase in viscosity as well as by addition of the friction modifiers, which was due to reduction in frictional forces in the flange zone and around the die radius. In contrast to the results in the drawing test, the frictional characteristics in the ironing test were little affected by the viscosity because the ironing process was primarily performed in the boundary lubrication regime. As to workpiece materials, a double-layer steel (GAE) coated with an electrogalvanized iron-rich alloy layer on the surface of GA was superior to GA in terms of deep drawability due to the lower contact ratio based on high hardness of the top coating layer and probably due to a low coefficient of friction in the boundary contact area. When compared with the effects of the friction modifiers, active sulphur EP (extreme pressure) additive showed the most significant effect on formability and the lowest friction in the ironing process. On the other hand calcium sulphonate raised formability in the deep drawing, but was ineffective for reducing friction in the ironing process.

Simulating the Temper Rolling of Galvanized Steel

2005 ◽  
Vol 105 ◽  
pp. 371-378 ◽  
Author(s):  
G. Vincent ◽  
C. Counhaye ◽  
Claude Esling
Keyword(s):  
Numerical Simulation ◽  
Rolling Process ◽  
Galvanized Steel ◽  
Stress Fields ◽  
Temper Rolling ◽  
Coated Steel ◽  
Steel Sheets ◽  
Skin Pass ◽  
Early Results ◽  
Zinc Coated Steel

This work deals with early results obtained in numerical simulation of the skin-pass of zinc coated steel sheets. First, the streamline model and its adaptation to the case of the temper rolling of coated steel sheets are detailed. Second, the influence of various parameters of the rolling process on the strain and stress fields in the sheet is numerically calculated.

scholarly journals Investigations on the occurrence of different wetting regimes in laser brazing of zinc-coated steel sheets

2020 ◽  
Vol 64 (3) ◽  
pp. 449-456 ◽  
Author(s):  
Thorsten Mattulat ◽  
Helge Kügler ◽  
Frank Vollertsen
Keyword(s):  
Coated Steel ◽  
Laser Brazing ◽  
Steel Sheets ◽  
Zinc Coated Steel

Surface investigation and tribological mechanism of a sulfate-based lubricant deposited on zinc-coated steel sheets

2016 ◽  
Vol 390 ◽  
pp. 784-794 ◽  
Author(s):  
Christian Timma ◽  
Thomas Lostak ◽  
Stella Janssen ◽  
Jörg Flock ◽  
Christian Mayer
Keyword(s):  
Surface Investigation ◽  
Coated Steel ◽  
Steel Sheets ◽  
Zinc Coated Steel

scholarly journals Corrosion Resistance of Organic Film Coated, Metal-organic Composite Coated and Some Zinc Coated Steel Sheets

1985 ◽  
Vol 71 (6) ◽  
pp. 749-755 ◽  
Author(s):  
Minoru KITAYAMA ◽  
Minoru YONENO ◽  
Kazuhiro MASUDA ◽  
Jyoji OKA
Keyword(s):  
Corrosion Resistance ◽  
Coated Steel ◽  
Organic Film ◽  
Steel Sheets ◽  
Coated Metal ◽  
Metal Organic ◽  
Zinc Coated Steel

Contact mechanics of zinc-coated steel sheets

Wear ◽  
1996 ◽  
Vol 199 (2) ◽  
pp. 260-267 ◽  
Author(s):  
Hasan Mulki ◽  
Takaji Mizuno
Keyword(s):  
Contact Mechanics ◽  
Coated Steel ◽  
Steel Sheets ◽  
Zinc Coated Steel
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