Papers by Keyword: Metalworking Fluid

Abstract: Metalworking fluids (MWFs) are widely used in the metal forming industrials. It was used for reducing of the friction and cooling of the mechanical processes. In this research, the modified sugarcane bagasse (MSB) with aluminium sulphate (Al₂(SO₄)₃) was used as an adsorbent for removal of the metalworking fluid in Continuous Stirred Tank Reactor (CSTR). The point of zero charge of sugarcane bagasse and modified sugarcane bagasse were pH 6.1 and 3.7, respectively. The effect of initial concentration of metalworking fluid was studied. When used the reactor 3 L and flow rate at 0.055 L/min, the % removals of MWF at initial concentration 6,480-41,513 g/m³ were 98.0-56.7%, respectively. The significant uptake of metalworking fluid was demonstrated by FT-IR spectroscopy.

Abstract: Most of the several billion liters of metalworking fluid (MWF) used worldwide and annually are water-based and thus prone to a microbial contamination. The microbial growth leads to a deterioration and therefore to a loss of quality and technical performance. In most cases, biocides, which pose a potential risk to health and environment, are used to reduce the microbial load. To avoid these limitations, the paradigm shift of using microorganisms in a positive way in a manufacturing process as a lubricant is investigated in this paper. Some microorganisms are able to synthesize equivalent MWF components like e.g. fatty acids or sulfur compounds. Due to this fact, it is possible to create a regenerative system on a microbiological basis for the substitution of mineral oil containing MWF components. To demonstrate the lubrication potential of bacteria, preliminary investigations were conducted on a Brugger-tribotester. Against this background, the approach presented here intends to investigate the lubrication properties of special microorganisms and the influence of the microbial cell counts on the lubrication behavior respectively. The results of the tribological tests show that the microbial-suspensions exhibit Brugger-values as high as highly concentrated conventional MWF and indicate the potential to replace these respective components.

Abstract: This paper compares the cutting process characteristics of organic and inorganic coolant for milling process. RBD(refined, bleached & deodorized) palm olein, refined canola and soy bean oil were selected as based oil for soluble mixture(organic) while Jetkool SC95 as inorganic metalworking fluid (MWF). Throughout the research, carbide coated cutting tool and JIS SS400 mild steel are used with various feed rate, depth of cut and fixed spindle speed to determine the cutting temperature, forces and also surface roughness. Heat capacity, pH and tool wear assessment are carried out as well with same material. From the research, cutting temperature, cutting force and surface roughness are proportional to the feed rate and depth of cut. The MWFs pH level also drops after cutting process. Each MWFs showing their different strength on different assessments, overall from the results obtained, palm oil has a high potential to be marketed as organic MWF.