EFFENDI, JAMIATUL (2010) ANALISA KEKERASAN DAN STRUKTUR MIKRO PADA BEBERAPA PRODUK MATA BOR. Other thesis, University of Muhammadiyah Malang.
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Purpose of this examination is to know how the comparison of quality in several product of drill, with changed of factors. The examination is done to know of quality drill with examination hardness and micro structure inspection. The result of hardness test is knew high hardness for drill concrete is label I(joran), the lowness is label III(bosh), lower end drill label II(prohex) is highest. For drill steel label II(prohex) have hardness lower end highest and label III(bosh) higher more than label I(joran). For the drill wood label III(bosh) higher more than label II(prohex) and label I(joran). Can to the seem, hardness of upper end and lower end is different because side of used in lower end needed higher hardness and upper end is lower not to be able to resist, from the result of micro structure test we can see half of big structure materials of steel such as ferrit, ferlit, bainit and carbide unity between several of unsure. For the great quality in label of drill concrete label Joran is highest and label Bosh is lowest. For the drill of steel in highest is label prohex and the lowest is label Joran. For the drill od wood the best is label bosh and the ugly is label Joran.
|Item Type:||Thesis (Other)|
|Subjects:||T Technology > TJ Mechanical engineering and machinery|
|Divisions:||Faculty of Engineering > Department of Mechanical Engineering|
|Depositing User:||Rayi Tegar Pamungkas|
|Date Deposited:||12 Apr 2012 02:25|
|Last Modified:||12 Apr 2012 02:25|
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