3.3.3 Selection of Die Angles
The split die was designed for the ease of assembly for fabrication. AISI 52100 steel was selected as the material for the die fabrication. The entry part of the die is 12 mm and has 120 mm length. The profile of the die is also shown in the solid works software. The angle of the die is 90 is maintained, the slope radius is 20 mm. the Figure.3.1 & Figure. 3.2. illustrate the split die design and solid works model of the split die.
Figure. 3.1 : Split die design
Figure. 3.2 : Solid works model of the split die
3.3.4 Fixture Design & Bolt Design
The Fixture is used to hold the split die rigidly. It gives more strength to the die, to overcome the stresses during the ECAP. AISI 1018 Mild Steel material was selected for the fabrication of the container to reduce the cost. The construction is easy to handle and it is easy to locate the die inside the fixture. The clamping provision is easily handled. The Figure. 3.3 illustrate the fixture design and Figure. 3.5 solid works model. The Figure. …show more content…
The samples are fed into the electric muffle furnace and heated to the different temperatures like 150C and 200C keep for one hour. The photographic view of the furnace is shown in the Figure. The samples are kept within the die and it is assembled to accurate position for pressing in the UTM machine . The potential of the UTM machine is of 40 Ton limit used and its ram speed was maintained at 1 mm s−1for every pass. The load for compaction of chips is 10 tons. MoS2 as lubrication. Lubrication may be very important to reduce the friction between the sample and the channel internal wall and to eliminate the sample from the die after the process is completed. The samples are pressed upto 4 passes through the processing routes A, BA, BC and C. The samples are processed before and after the ECAP process of pure aluminum and Al 2024 are shown in the Figure:
The split die was designed for the ease of assembly for fabrication. AISI 52100 steel was selected as the material for the die fabrication. The entry part of the die is 12 mm and has 120 mm length. The profile of the die is also shown in the solid works software. The angle of the die is 90 is maintained, the slope radius is 20 mm. the Figure.3.1 & Figure. 3.2. illustrate the split die design and solid works model of the split die.
Figure. 3.1 : Split die design
Figure. 3.2 : Solid works model of the split die
3.3.4 Fixture Design & Bolt Design
The Fixture is used to hold the split die rigidly. It gives more strength to the die, to overcome the stresses during the ECAP. AISI 1018 Mild Steel material was selected for the fabrication of the container to reduce the cost. The construction is easy to handle and it is easy to locate the die inside the fixture. The clamping provision is easily handled. The Figure. 3.3 illustrate the fixture design and Figure. 3.5 solid works model. The Figure. …show more content…
The samples are fed into the electric muffle furnace and heated to the different temperatures like 150C and 200C keep for one hour. The photographic view of the furnace is shown in the Figure. The samples are kept within the die and it is assembled to accurate position for pressing in the UTM machine . The potential of the UTM machine is of 40 Ton limit used and its ram speed was maintained at 1 mm s−1for every pass. The load for compaction of chips is 10 tons. MoS2 as lubrication. Lubrication may be very important to reduce the friction between the sample and the channel internal wall and to eliminate the sample from the die after the process is completed. The samples are pressed upto 4 passes through the processing routes A, BA, BC and C. The samples are processed before and after the ECAP process of pure aluminum and Al 2024 are shown in the Figure: