The technology for increasing the productivity of the sintering powders of tin-phosphorous bronze grade BrSn10Ph1 process is described. The data on technological factors influencing the implementation of the sintering process, the equipment used, product quality control and the resulting products are given.
The study of the process of producing copper alloy (copper 85, tine 5, lead 5, zinc 5) powders of grade by the method of induction melting and spraying with a melt gas flow is presented.
A technology has been developed for producing a tubular mover based on piezoceramics PZT-19, PZN-PT-BT, PZN-PT-PZ by dry radial-isostatic pressing used for the production of scanning tunnel microscopes as a manipulator of precise movements.
A model for calculating the permeability of two-layer powder filter materials (PFMs) is proposed taking into account the overlap area. Examples of calculating the permeability of PFMs on real powder structures are given.
A model for calculating the metal powder pressing process with a porogen is proposed. An approximate method and algorithm have been developed that make it possible to take into account the presence of a porogen in the calculation of the pressing process and reflect all types of bonds at the contact boundaries of metal powder particles. Based on the constructed model, an approximate method and algorithm for calculating the properties of powder filter material (PFM) produced by pressing granular metal powders using a porogen have been developed. The advantage of the proposed mathematical model is the possibility of its development to describe the sintering process, as well as the possibility of its use for calculating the modified elementary cells used by researchers in modeling the structure of PFM with a porogen.
A model for calculating the metal powder pressing process with a porogen is proposed. An approximate method and algorithm have been developed that make it possible to take into account the presence of a porogen in the calculation of the pressing process and reflect all types of bonds at the contact boundaries of metal powder particles. Based on the constructed model, an approximate method and algorithm for calculating the properties of powder filter material (PFM) produced by pressing granular metal powders using a porogen have been developed. The advantage of the proposed mathematical model is the possibility of its development to describe the sintering process, as well as the possibility of its use for calculating the modified elementary cells used by researchers in modeling the structure of PFM with a porogen.
The information is given about small-sized equipment for producing sprayed powders of alloys based on copper and aluminum, intended for strengthening new and restoring worn-out surfaces by applying a gas-flame coating, as well as for the protection of parts against corrosion, process modes and powder properties. The high quality of the coatings obtained with the use of manufactured powders has been confirmed.
The process of producing powder permeable materials made of spherical bronze powders by tin-phosphorous pressing method has been investigated. A technique for producing experimental samples based on the granulation of powders by a pore-former has been described. The technology is simple to carry out and it does not require complex equipment. Products have a satisfactory set of properties.