Using of electromechanics treatment for work-hardening of wearproof coverages
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2021-01-11 15:42
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SLINKO, D., VARLAMOVA, L.. Using of electromechanics treatment for work-hardening of wearproof coverages. In: Materials Science and Condensed Matter Physics, Ed. 7, 16-19 septembrie 2014, Chișinău. Chișinău, Republica Moldova: Institutul de Fizică Aplicată, 2014, Editia 7, p. 309.
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Materials Science and Condensed Matter Physics
Editia 7, 2014
Conferința "Materials Science and Condensed Matter Physics"
7, Chișinău, Moldova, 16-19 septembrie 2014

Using of electromechanics treatment for work-hardening of wearproof coverages


Pag. 309-309

Slinko D.1, Varlamova L.2
 
1 FSBSI the All-Russia research institute of technology of reconditioning and operation of machin-tractor park,
2 Bauman Moscow State Technical University
 
 
Disponibil în IBN: 20 martie 2019


Rezumat

The most promising for quality is the use of wear-resistant coatings for spraying cored wires. Despite the high performance properties of coatings obtained by spraying cored wires, they do not satisfy the requirements for components operating at high specific and alternating loads, because during the deposition can not get dense and durable coatings due to the presence in them of microcracks, pores and oxides. Therefore for components operating at high specific loads, it is expedient to use the subsequent hardening of the coatings. The most promising method of harde-ning coatings is their electromechanical treatment (Figure 1) [1].  The main processing parameters electromechanical affecting the adhesion strength of coating base are the current and pressure force at the contact point. To study the effect of processing on the strength of the electromechanical coupling using the method of separation of pins [2] Article 45 of the samples deposited flux cored wires of different chemical composition. As a result of research has identified the optimal processing mode electromechanical cylindrical parts with a thickness of the sprayed layer (2-3) mm: Voltage - (4-5); Current - (800-900) A; Pressure tool - (50-75) MPa.    Thus, testing the adhesion strength of the coatings applied researched cored wires then using electromechanical treatment showed an increase in bond strength is 8-10 times. In this macro-analysis, based on the nature of the destruction of coatings showed that the adhesion strength significantly depends on the specific pressure of the tool at the optimum values of current and voltage.