Abstract
In the paper, the results of experimental studies related with determination of the influence of the supply of a grinding fluid (GF) doped with powdered graphite and MoS2 into the machining zone with the minimum quantity cooling (MQC) method on the course and results of the reciprocating internal cylindrical grinding of rings made from Inconel® alloy 718 have been presented. As a grinding fluid, water aerosols were used. The aerosols delivered the following into the grinding zone: water slurry MoS2 with a concentration of 30 g/dm3, water slurry of graphite with a concentration of 30 g/dm3, 5% water solution of Syntilo RHS oil and pure demineralized water. The obtained results of carried out experiments showed that the most favorable conditions of grinding wheel operation were obtained when MQC-based delivering an aerosol of water slurry made from demineralized water doped with MoS2 and graphite with a minimum flow rate and when delivering an aerosol of 5% water slurry of Syntilo RHS oil. It was proved that doping GF with powdered MoS2 and graphite, with delivery in the form of an aerosol with a minimum flow rate, has a substantial influence on the intensity of clogging grinding wheel active surface (GWAS). Additionally, it has been demonstrated that the solid grease MoS2 and graphite particles reached the area of contact of the GWAS and the machined surface effectively, actively influencing its tribological conditions of the grinding process.
Highlights
VbVolume of bond in the grinding wheel, % VgVolume of abrasive grains in the grinding wheel, % Advanced engineering materials known as superalloys, such VpVolume of pores in the grinding wheel, %as Inconel® [1,2,3,4,5], Incoloy® [6, 7], Nimonic® [8, 9], and VsVolume of grinding wheel wear, mm3Hastelloy® [10, 11] and various types of titanium alloys [12, VwVolume of material removed, mm3
The main goal of these experimental studies was determining the influence of the supply of a grinding fluid (GF) doped with powdered graphite and MoS2 into the machining zone with the minimum quantity cooling (MQC) method on the course and results of the reciprocating internal cylindrical grinding of rings made from Inconel® alloy 718
energy-dispersive X-ray spectroscopy (EDS) microanalyses carried out on the grinding wheel active surface (GWAS) after grinding in the conditions of delivering the GF doped with powdered graphite (MQC-G) showed a considerable presence of carbon in the intergranular spaces, among the microchips lying there (Fig. 17 and Table 4)
Summary
VbVolume of bond in the grinding wheel, % VgVolume of abrasive grains in the grinding wheel, % Advanced engineering materials known as superalloys, such VpVolume of pores in the grinding wheel, %as Inconel® [1,2,3,4,5], Incoloy® [6, 7], Nimonic® [8, 9], and VsVolume of grinding wheel wear, mm3Hastelloy® [10, 11] and various types of titanium alloys [12, VwVolume of material removed, mm. Volume of bond in the grinding wheel, % Vg. Volume of abrasive grains in the grinding wheel, % Advanced engineering materials known as superalloys, such Vp. Volume of pores in the grinding wheel, %. As Inconel® [1,2,3,4,5], Incoloy® [6, 7], Nimonic® [8, 9], and Vs. Volume of grinding wheel wear, mm. Hastelloy® [10, 11] and various types of titanium alloys [12, Vw. Volume of material removed, mm
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