Experimental Study Of Soil HT200Abrasive Wear

Mechanical wear of materials is a common failure mode products,broughtsociety huge economic losses each year. Agricultural machinery, soil and wear partsresulting in a substantial economic loss. Agricultural machinery, soil and wear partsresulting in a substantial economic loss.The main work of this project are thefollowing:The basic characteristics of the classification and the main factors affectingthe wear from the perspective of determining the typical soils of China; underconditions of different soil materials wear the basic law, the use of simple soil andmake the soil compression testing machine compression test; abrasive wear weightloss trials conducted mainly observed wear mass loss from the merits of the case,macro scanning electron microscope wear condition of wear surface, to determinewear mechanism, then use the microscope abrasion reasons explained from themicrostructure analyzes, step verification test results. Finally, get the test concludedthe following conclusions:（1）HT200factor is the amount of wear increases as the particle size of theabrasive grains increases, HT200PF organization of gray cast iron, low hardness,poor wear resistance, compared with the larger amount of wear of the steel, HT200gray cast iron Wear Mechanism brittle flaking to produce plastic deformation of themain lighter plastic deformation.（2）With the increase in soil bulk density, the corresponding unconfinedcompressive strength increases, the relationship between them exponentialrelationship, where statistics often vary with different moisture content valuesdetermined. A linear relationship between the compressive strength and moisturecontent of soil. When the moisture content of moisture content of less than athreshold value, the compressive strength of the soil and decrease linearly withincreasing water content; moisture content when moisture content is greater than athreshold value, the compressive strength of the soil with the moisture contentincreases linearly increases. Thus to determine the moisture content of the soil should be plowed range period.（3）Get the mechanism HT200abrasion resistant soil particles from the wearmorphology analysis is mainly onlookers cutting wear. HT200soil particles to wearmetal surface treatment is hard without overheating, resulting interaction of softabrasive, hard abrasive soil particles (such as gravel) mainly microscopic wearmechanism under cutting, abrasive wear conditions in several soil deformation andlow cycle fatigue as the main wear mechanism.