Copper-based Subject To The Pantograph Skateboard Components Optimized And Properties

The research purpose of this paper is improvement copper-based powder metallurgical pantograph sliding plate deliver the performances such as density, electrical conductivity and surface hardness, and eventually improve its abrasiveness can. Through the wear mechanism analysis for copper-based powder metallurgical pantograph sliding plate, from the material composition design of pantograph sliding plate, start with , and redesign the composition composition of the material of pantograph sliding plate including matrix composition, lubrication composition and reinforced composition.This paper adopting " orthogonality experiment method " is major composition optimization method, and reach the copper based composition scope of the better powder metallurgical material of pantograph sliding plate. Apply metallographic microscope, X-ray diffraction and scanning electrical mirror , can the material analysis means such as E.S instrument, for the performance of the sampling that prepare , analyse test; Adopt design independently the wear equipment that refited , as sampling carries out wear experiment, has studied the relation of relation as well as wear rate and speed of wear extent and wear rate and time.The conclusions of this paper are as follows:1 have verified sampling preparation technology in sintering and the shape of suppressing press and reply again burn the powder metallurgical technology of four steps is maturation. This technology parameter is to suppress pressure: 200 Mpa. sintering temperature: 870 C, keep warm time 120 minutes; Repress force again for 300 Mpa burns temperature more again: 870 癈, burn time again 120 minutes.2 gets its best sampling composition of composition integral performance through the analysis of integral performance, is the tin of 4%, the lead of 0%, the graphite of 2%, the iron of 5% and surplus for copper; For orthogonality experiment composition, factor analysis gets composition best combination, is the tin of 4%, the lead of 2%, the graphite of 3%, the iron of 5% and surplus forcopper.3 In the wear experiment , graphite content has benefit high, for improving the lubrication condition of wear surface. In run to join stage, the graphite content sampling of 4% enters steady wear stage less with 5 hours than the graphite content sampling of 2%. But in this experiment, graphite content can not explain its abrasiveness high, can be good. Speed the influence for wear rate is to follow speed accelerate , wear rate submits the oblique word type change " Zhi".4 some detection composition orthogonality optimization course and process tha.t explanation this paper adopts as a result are practical and feasible , have reached the preparation with feasible comparison technology and composition scope.At last, that need to improve for extrusion technology and wear experiment has put forward the personal perspectives of author.