The production of a ferrofluid container, intended for use in the KRAKsat (CubeSat type) satellite in space conditions, is presented. Mechanized laser beam welding for AISI 316L stainless steel test joint and container prototype was developed and tested. The welded test joints were examined by non-destructive visual, penetration and radiographic testing and destructive testing by macro- and microscopic examination, static tensile test, static bending test, and hardness measurements. The welded container prototype was examined by leak test, temperature-vacuum test and vibration test. Test joints’ evaluation showed a proper selection of welding parameters and expected quality of joints. Austenitic microstructure with small δ-ferrite content in base materials, heat-affected zones, and welds guarantees sufficient mechanical properties for this part geometry. The tensile strength range of test joints was 687–729 MPa, hardness range was 140–200 HV3, and the bending angle was 180°. Welding of the prototype container and testing of tightness, resistance to temperature changes, and vibration were successful. Compliance with flywheel design and manufacturing requirements will enable the launch of a research satellite into orbit with such a wheel.

介绍了拟在空间条件下用于KRAKsat（CubeSat型）卫星的铁磁流体容器的生产。开发并测试了AISI 316L不锈钢测试接头和容器原型的机械化激光束焊接。通过无损的目视，渗透和射线照相测试对焊接的测试接头进行检查，并通过宏观和微观检查，静态拉伸测试，静态弯曲测试和硬度测量对破坏性测试进行检查。通过泄漏测试，温度真空测试和振动测试对焊接的容器原型进行了检查。测试接头的评估表明正确选择了焊接参数和接头的预期质量。基材，热影响区，δ铁素体含量少的奥氏体组织，焊缝保证了该零件几何形状的足够的机械性能。测试接头的抗拉强度范围为687–729 MPa，硬度范围为140–200 HV3，弯曲角度为180°。原型容器的焊接以及密封性，耐温度变化性和振动性测试均获得成功。符合飞轮设计和制造要求，将使带有这种飞轮的研究卫星发射到轨道上。