Cold forging with MIPOŽ
During the distortion process, cold forging is causing extremely high pressures, which could have a negative effect on the work piece and on the smith's hammer forge.
Lubricants and especially solid lubricants are used, not only to ease the movement direction of the cold metal under high pressure, but also to serve as separating agent, to fast release the parts after the smith's process from the form (tool). None of the known soaps are able to take up these originating compressive forces, which is why MIPO® or molybdenum disulfide (MoS2) is used for this kind of application.
The disadvantage of the MoS2: Molybdendisulfid is a natural product, the mining and the restricted allocation on the world market are, among other things, responsible for pricing and availability. For these reasons the ECCO Group has developed alternative products which have already proved themselves for many years successfully in the industry.
Nearly 90% of the parts made by cold forging refer to parts for the automobile industry in the weight area of 0.05 to 15 kg. Coldly forged parts must be roughened due to sandblasting or being phosphatized (bonderized), so that the bonded lubricant combination will better stick to the surfaces.
The very high affinity to metal surfaces of ECCO MIPO’s and molybdenum disulfide supports the tumbling process as well as described below.
The powdered coating (bonded lubricant) occurs in the tumbling procedure (revolving drum) by adding some MIPO® to a certain percentage the parts are being coated,. The tumbling process runs approx. 10 – 15 minutes by which a steady distribution of the powder on the parts is guaranteed. During the tumbling the bonded lubricant (MIPO®) starts to stick on the surfaces of these parts due to high affinity to metal surfaces.
After the end of the coating the parts can be cold forged without any further addition of lubricants.
The best example of the use of molybdenum disulfide in the drum process, is the coating from shell casings. Thereby the friction and consequently the wear decreases in the barrel of a firearm.
Lubricants and especially solid lubricants are used, not only to ease the movement direction of the cold metal under high pressure, but also to serve as separating agent, to fast release the parts after the smith's process from the form (tool). None of the known soaps are able to take up these originating compressive forces, which is why MIPO® or molybdenum disulfide (MoS2) is used for this kind of application.
The disadvantage of the MoS2: Molybdendisulfid is a natural product, the mining and the restricted allocation on the world market are, among other things, responsible for pricing and availability. For these reasons the ECCO Group has developed alternative products which have already proved themselves for many years successfully in the industry.
THE MIPO® SERIES
Nearly 90% of the parts made by cold forging refer to parts for the automobile industry in the weight area of 0.05 to 15 kg. Coldly forged parts must be roughened due to sandblasting or being phosphatized (bonderized), so that the bonded lubricant combination will better stick to the surfaces.
The very high affinity to metal surfaces of ECCO MIPO’s and molybdenum disulfide supports the tumbling process as well as described below.
The powdered coating (bonded lubricant) occurs in the tumbling procedure (revolving drum) by adding some MIPO® to a certain percentage the parts are being coated,. The tumbling process runs approx. 10 – 15 minutes by which a steady distribution of the powder on the parts is guaranteed. During the tumbling the bonded lubricant (MIPO®) starts to stick on the surfaces of these parts due to high affinity to metal surfaces.
After the end of the coating the parts can be cold forged without any further addition of lubricants.
The best example of the use of molybdenum disulfide in the drum process, is the coating from shell casings. Thereby the friction and consequently the wear decreases in the barrel of a firearm.
MIPOŽ & MoS2
Cold forging with MIPO: Lubricants and especially
solid lubricants are used, not only to ease the movement direction of
the cold metal under high pressure, but also to serve as separating
agent, to fast... more
   |
