2nd ICAI 2022

International Conference on Automotive Industry 2022

Mladá Boleslav, Czech Republic

3. Case studies of DED in hot forming processes The AM used in the hot forming field is mainly in the ability to combine common materials and tools materials with increased resistance to high temperatures. At present, depositing processes are used for material combination. DED has the advantage of sufficient accuracy and cost savings. 3.1 NIMONIC 80A Nickel alloy calls NIMONIC 80A is already used in the field of hot forming, especially for worn tool edges. This material has an advantage, especially in higher abrasion resistance at elevated temperatures and higher temperature stability. The chemical composition of the material used is given in Table 1.

Table 1: Chemical composition of the NIMONIC Ni C Mn Cr Co Fe bal. 0.1 1.0 19.5 2.0 3.0 Source: author’s measurement data

NIMONIC 80A for AM was prepared by atomization and fine spherical powder with a particle size of 45 – 106mm was deposited (see Figure 4). The following parameters are checked before deposition: • powder humidity

• porosity of particles • regularity of shape • size and number of satellites • homogeneous chemical composition • no oxidation

Figure 4: Powder quality evaluation

Source: author’s photo The tensile tests of deposited Nimonic were performed before the application for production tools. The mechanical properties are shown in Table 2. The tests were performed in three directions (X and Y = directions in the plane of the applied planar

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