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High strength biodegradable surgical threads are in demand for surgical practice. Nowadays, such threads can be made of metallic materials such as magnesium, zinc or alloys based on these metals. In current paper, manufacturing technology of biodegradable surgical threads of Mg–Ca alloys and of pure Zn was developed and basic properties of the obtained product have been characterized. The influence of in vitro corrosion in bovine serum simulating environment in the mammal’s body on the surgical threads mechanical properties was determined. It was found that Zn and hot extruded alloys MgCa0.9 and MgCa1.2 can be recommended as a candidate for the future study in vivo. Properties of the room temperature drawn wires of the alloy MgCa0.7 are not sufficient for its application as surgical threads.

For two variants of the drawing process of solid round profiles (α = 6°C, RO/Rk = 1.136, m = 0.15 and α = 4°C, RO/Rk = 1.192, m = 0.15) the effective strain distribution εj and the coordinate grid distortion are presented and compared. The results presented have been obtained theoretically using FEM and experimentally by means of the coordinate grid method. Based on the programme which simulates the drawing process of solid round profiles the distribution of the ε̇rz strain‐rate tensor component, the effective strainrate εj and the die pressure distributions on the metal‐die contact surface were presented. Exact description of the experiments carried out has also been presented. Investigations of strain distribution were done on copper specimens. Results were presented as three dimensional graphs. This helps to make a detailed analysis of changes occurring in the deformation zone for some of the quantities considered. Comparing effective strain distribution εj and grid distortions it follows that experimental data agree with theoretical calculations. Differences occur after the metal exits from the die. The presented results of theoretical considerations and experimental investigations help to state that the programme constructed, while based on the FEM, simulated the drawing process of solid round profiles accurately.

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