NEW INNOVATIONS ARE FROM PERM TECH

18 May 2020 127

Scientists of Perm Tech developed a sensor that improves the technology of three-dimensional metal products printing. It will allow more accurately and quickly to build products using an electron beam, taking into account all technological parameters. The innovation will be useful in aircraft and rocket industries. The technology has no analogues in Russia and in the world with such efficiency. The results of the study were published in the Q1 IEEE Sensors Journal.

— To produce metal unit using stereo litography apparatus, one must consider requirements of many stress-related properties, chemical constitution, micrograph and the soundness. One of the promising tools for surfacing layers is an electron beam. But it is not always possible to ensure the exact impact of the beam on the surfacing wire. Therefore, a sensor that allows to receive information about the combination of an electron beam with a wire in the process of layer-by-layer growth was developed. It has been already developed a laboratory sample probe. Now scientist are working on a system that will interact with the sensor. It will combine the electron beam with the wire automatically.

Creating a new technology is possible only with a mathematical model, because using it one can print three-dimensional metal products. The invention will be potentially interesting to enterprises that use electron beam additive technologies. The mathematical model made it possible to establish a “connection” between the signal at the output of the sensor and the position of the wire relative to the electron beam. The model "reports" what is happening in the field of product creation, in a continuous mode. The invention allows to step the new stage in the of parts creation.

Unlike foreign analogues, the Perm technology allows to combine the electron beam with the wire more accurately and at times faster. The technology is less critical on equipment and more flexible to changes in modes and deposition patterns. In particular, one of the analogues receives information several times per second, and the Perm sensor is ten times faster. The technology works without stopping the process. Continuous output will save 5-10% of metal.

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