Factors Influencing Friction In Steel Sheet Forming

As the factors produce a dispersion effect on friction the following variables were chosen.

Factors influencing friction in steel sheet forming.

The influence of tool steel microstructure on friction in sheet metal forming kirkhorn lanny lu. Various lubricants are used to reduce the friction during the metal forming. Abstract the frictional behavior of a number of conventional tool materials used in the sheet forming industry has been studied by a recently developed tribotester based on flat die strip. The coefficient of friction in stribeck curve depends on sliding velocity and contact pressure.

Friction and lubrication are important factors when trying to accurately simulate advanced high strength steel ahss metal forming processes. Die and blankholder surfaces for deep drawing sheet metal must be as smooth as possible they should be ground and lapped to mitigate friction. Andersson mats lu and ståhl jan eric lu in wear 302 1 2. Sample orientation lubricant velocity of sample displacement plastic strain and contact pressure.

There is a need to study the various factors affecting the friction. The friction conditions are dependent on the tribology system i e. The strip drawing test of sheet metal was used in the simulation of the steel sheet steel tool friction contact conditions during a drawing operation. The influence of forming speed over pressing and holding time on springback behaviour of sheets was studied numerically.

Any type of friction will increase force hence stresses in the material. In sheet metal forming friction has a major role in knowing the properties of metals. The plane strain bending process is simulated in abaqus standard. The applied pressure load surface roughness both of sheet metal and tool and process conditions static or dynamic loads.

If friction exists more than necessary it has a negative impact on characteristics of a product.