10.14489/td.2017.05.pp.050-053

2017, 05 May

DOI: 10.14489/td.2017.05.pp.050-053

Mokritskii B. Ya., Kravchenko E. G., Usova T. I.
PENDULAR SCRIBING METHOD AS AN EXPRESS ASSESSMENT MONITORING FACILITY OF QUALITY TOOL MATERIALS
(pp. 50-53)

Abstract. The pendular scribing is developed as a method for express assessment of operational properties of a metalcutting instrument through assessment of properties of instrumental materials. As assessment measurement of this parameter of a pendular scribing trace is used. There is no quantitative evaluation criterion today, considerable volumes of experimental data, which need to be saved up and analyzed, are necessary for this purpose. At present there is a question of “sensitivity” of a method of a pendular scribing and the fields of its application. Experimental results of assessment of “sensitivity” of a method according to ability of a method to distinguish materials on their structure are given in this work, namely the question is raised, whether change of structure of material could affect parameters of a pendular scribing trace. The same instrumental initial material, but with a different size of grain of the strengthening (firm) phase is taken to answer this question. The initial condition of structure of instrumental solid alloy of the BK6 brand is regulated by the size of grain and specifications of its production. The fine-grained structure of the same alloy is provided in the BK6M brand. Especially small granular structure is in the BK6OM brand. The coarse-grained structure of grain is provided in the BK6KC brand. This range of structure provides change of the grain size from 0,9 microns to 4,8 microns that results in distinction of durability at these alloys and mechanisms of their destruction. It is established that the maximum width of a pendular scribing trace under equal conditions of loading is various for these alloys. This distinction is measured by usual means. Distinction is available under different conditions of loading. Adequacy of the obtained data is rechecked on change of viscosity coefficient of destruction at these materials.

Keywords: indenter, scribing, model of loading of instrumental material, operability of an instrument.

+ - About the Authors Click to collapse

B. Ya. Mokritskii, E. G. Kravchenko, T. I. Usova (Komsomolsk-on-Amur State Technical University, Komsomolsk-on-Amur, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

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