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Wear resistance is the most important parameter for the material rubbing against other objects because the wear rate determines life time of that material. The indication that one material has a good wear resistant is the weight loss is very small and the distortion of dimension is not occured. In g...
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id-itb.:170822017-10-09T10:32:49Z#TITLE_ALTERNATIVE# (NIM : 13706026); Pembimbing : Dr. Ir. Husaini Ardy, RONALD Indonesia Final Project INSTITUT TEKNOLOGI BANDUNG https://digilib.itb.ac.id/gdl/view/17082 Wear resistance is the most important parameter for the material rubbing against other objects because the wear rate determines life time of that material. The indication that one material has a good wear resistant is the weight loss is very small and the distortion of dimension is not occured. In general, wear resistance can be improved by increasing the material hardness but that is not the only factor affecting the wear resistance of a material. Carbon equivalent, heat treatment process, porosity and micro-structure of material also determines the ability of a material to withstand the wear. <br /> <br /> <br /> <br /> <br /> The most widely use of wear resistant plate in the field is a plate having tempered-martensite structure and also used in this study. The objective of this study is to find out the effect of carbon equivalent and hardness on wear <br /> <br /> <br /> <br /> <br /> resistance and the effect of friction on the hardness and micro-structure. The testing is carried out for several time intervals, 10, 20, 30 and 40 hours. At each time interval, sample was taken for this study. Plate used in this experiment is X– 500 plate and X–400 plate. The last three digit number represents the hardness number in Brinell Hardness Number (BHN). <br /> <br /> <br /> <br /> <br /> The results obtained showed that micro-structure of the test-material does not change in all testing intervals. The hardness of the specimen increased, the average increase in hardness for X–500 plate is about 7%, and for X–400 plate is approximately 10%. The weight loss is two times greater on X–400 plate than that of X–500 plate and the largest mass reduction occurred at the beginning of testing. <br /> <br /> <br /> <br /> <br /> In addition, the surface roughness of the specimens were refined and the cold welding occured in the test material. Force and the friction coefficient decreases with time of testing. Friction coefficient values obtained for the two <br /> <br /> <br /> <br /> <br /> plates at the beginning of the test is 0.295. This is very small compared to literature data of friction coefficient between steel and steel. text |
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Wear resistance is the most important parameter for the material rubbing against other objects because the wear rate determines life time of that material. The indication that one material has a good wear resistant is the weight loss is very small and the distortion of dimension is not occured. In general, wear resistance can be improved by increasing the material hardness but that is not the only factor affecting the wear resistance of a material. Carbon equivalent, heat treatment process, porosity and micro-structure of material also determines the ability of a material to withstand the wear. <br />
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The most widely use of wear resistant plate in the field is a plate having tempered-martensite structure and also used in this study. The objective of this study is to find out the effect of carbon equivalent and hardness on wear <br />
<br />
<br />
<br />
<br />
resistance and the effect of friction on the hardness and micro-structure. The testing is carried out for several time intervals, 10, 20, 30 and 40 hours. At each time interval, sample was taken for this study. Plate used in this experiment is X– 500 plate and X–400 plate. The last three digit number represents the hardness number in Brinell Hardness Number (BHN). <br />
<br />
<br />
<br />
<br />
The results obtained showed that micro-structure of the test-material does not change in all testing intervals. The hardness of the specimen increased, the average increase in hardness for X–500 plate is about 7%, and for X–400 plate is approximately 10%. The weight loss is two times greater on X–400 plate than that of X–500 plate and the largest mass reduction occurred at the beginning of testing. <br />
<br />
<br />
<br />
<br />
In addition, the surface roughness of the specimens were refined and the cold welding occured in the test material. Force and the friction coefficient decreases with time of testing. Friction coefficient values obtained for the two <br />
<br />
<br />
<br />
<br />
plates at the beginning of the test is 0.295. This is very small compared to literature data of friction coefficient between steel and steel. |
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Final Project |
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(NIM : 13706026); Pembimbing : Dr. Ir. Husaini Ardy, RONALD |
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(NIM : 13706026); Pembimbing : Dr. Ir. Husaini Ardy, RONALD #TITLE_ALTERNATIVE# |
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(NIM : 13706026); Pembimbing : Dr. Ir. Husaini Ardy, RONALD |
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(NIM : 13706026); Pembimbing : Dr. Ir. Husaini Ardy, RONALD |
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https://digilib.itb.ac.id/gdl/view/17082 |
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