Manufacturing Technology Today

Sunil Magadum ¹, S. Arun Kumar ¹, V. G. Yoganath ¹, C. K. Srinivasa ¹

Affiliations
1 Central Manufacturing Technology Institute, Bangalore-560022, IN

Abstract

In the present work machining of SS304 was carried out on a lathe using coated carbide tool at high cutting speeds. The effect of cryogenic cooling on tool life and cutting forces were analyzed and compared with conventional flood coolant. Tests were carried out at cutting speed of 200 and 250 m/min, and the feed rate, depth of cut were kept constant at 0.2 mm/rev and 1.5 mm respectively. Coated carbide CNMG 120404 Insert was used as a cutting tool. The results have revealed that cryogenic machining has yielded better tool life as compared to conventional flood machining.

Keywords

Cryogenic Machining, Tool Life, Cutting Forces, Coated Carbide Tool.

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V. G. Yoganath ¹, S. Arunkumar ¹

Affiliations
1 CMTI, Tumkur Road, Bangalore, IN

Abstract

During Machining enormous amount of coolant is applied at the cutting zone, the basic functionalities of the coolant being cooling, lubricating and flushing of chips. Generally the cutting fluids are of mineral base oils with additives such as Sulphur, Phosphorous and Chlorine. These fluids along with the swarf result in a mist during operation, which is extremely harmful when inhaled and also a serious hazard when exposed to skin resulting in disorders. The use of such cutting fluids poses a potential hazard to the work personnel and the working environment. After usage of these coolants proper care is to be taken during disposal. The presence of aromatic hydrocarbons causes environmental pollution.

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V. G. Yoganath ¹, S. Arunkumar ¹

Affiliations
1 CMTI, Tumkur Road, Bangalore, IN

Abstract

Engineering Industry strives to improve the machine utilization by reducing the total machining time without altering quality of machined component. High speed machining center is one such area which improves process efficiency. These machines by employing very high spindle speeds, high feed rate with high acceleration and deceleration help in reducing the cycle time considerably.

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