Increase in the wear resistance of working tools functional surfaces of crushing and mixing mechanisms of biogas unit
In article as object of increase of wear resistance the biogas installation developed by authors, namely working bodies of mechanisms of crushing and hashing is chosen. Researches were conducted in laboratories of technology of metals and repair of cars and technology of storage and processing of agricultural production of the Kemerovo state agricultural institute. Research objective is the choice of the most optimum way of hardening of functional surfaces of working bodies of mechanisms of crushing and hashing of biogas installation with application of cheap wearproof coverings. Justification of a choice of a method to put of covering was application of a way of formation of the technological repair blocks (TRB) which allowed to execute electric spark processing by the white unalloyed cast iron. This way includes contact processing by a rotating electrode. In the course of drawing a covering continuous removal of a defective layer from a working surface of a rotating electrode is carried out. When drawing a wearproof covering on this way time of processing was reduced by 15-20%. The conducted researches showed that the most optimum and low-cost way of hardening of functional surfaces of working bodies of biogas installation is the electric spark processing the thermalcycle with the white unalloyed cast iron. Operability of functional surfaces of working bodies increased by 30% in comparison to the main material without hardening.