Hard turning of induction hardened SAE 1045 steel with PCBN tools under dry machining and Minimum Quantity of Lubrication (MQL)

2017 ◽  
Author(s):  
fred lacerda amorim ◽  
Ricardo Torres ◽  
Álisson Rocha Machado ◽  
Marco Aurelio Sampaio
Keyword(s):  
Hard Turning ◽  
Dry Machining ◽  
Minimum Quantity ◽  
1045 Steel ◽  
Pcbn Tools ◽  
Minimum Quantity Of Lubrication

Influence of minimum quantity of lubrication (MQL) when turning hardened SAE 1045 steel: a comparison with dry machining

2018 ◽  
Vol 98 (1-4) ◽  
pp. 959-968 ◽  
Author(s):  
Marco Aurélio Sampaio ◽  
Álisson Rocha Machado ◽  
Carlos Augusto Henning Laurindo ◽  
Ricardo Diego Torres ◽  
Fred Lacerda Amorim
Keyword(s):  
Dry Machining ◽  
Minimum Quantity ◽  
1045 Steel ◽  
Minimum Quantity Of Lubrication

Low-cost syringe pump design modification for Minimum Quantity of Lubrication system application

2017 ◽  
Author(s):  
Anderson Nakazato ◽  
Maurício Oliveira FIlho ◽  
Marcel Kondo ◽  
Manoel Alves ◽  
Luis Hein
Keyword(s):  
System Application ◽  
Low Cost ◽  
Lubrication System ◽  
Syringe Pump ◽  
Design Modification ◽  
Pump Design ◽  
Minimum Quantity ◽  
Minimum Quantity Of Lubrication

Study on the Effects of Abrasive and Coolant-Lubricant Types on Minimum Quantity Lubrication-MQL Grinding

2011 ◽  
Vol 325 ◽  
pp. 231-237 ◽  
Author(s):  
Taghi Tawakoli ◽  
M.J. Hadad ◽  
A. Daneshi ◽  
M.H. Sadeghi ◽  
B. Sadeghi
Keyword(s):  
Surface Quality ◽  
Minimum Quantity Lubrication ◽  
Dry Machining ◽  
Grinding Forces ◽  
Minimum Quantity ◽  
Mql Grinding ◽  
Air Jet ◽  
Dry Grinding ◽  
Surface Damages ◽  
Minimum Quantity Lubricant

In dry grinding, as there is no coolant lubricant to transfer the heat from the contact zone, generation of surface damages are not preventable. Promising alternatives to conventional flood coolant applications are also Minimum Quantity Lubricant (MQL) or Near Dry Machining (NDM) or Semi Dry Machining (SDM). This research has been conducted to study the influence of the abrasive and coolant-lubricant types on the minimum quantity lubrication (MQL) grinding performance. One type of CBN and three types of conventional wheels (corundum) were tested. The tests were carried out in presence of fluid, air jet and eleven types of coolant-lubricants, as well as in dry condition. The results indicate that the finest surface quality and the lowest grinding forces could be obtained when grinding with CBN wheels. In the case of conventional wheels, the coarser wheel induces much proper grinding results.

Identification of a Friction Model at the Tool-Chip-Workpiece Interface in Dry Machining of a AISI 1045 Steel With a TiN Coated Carbide Tool

2011 ◽  
Vol 133 (4) ◽  
Author(s):  
Hamdi Ben Abdelali ◽  
Cedric Courbon ◽  
Joël Rech ◽  
Wacef Ben Salem ◽  
Abdelwaheb Dogui ◽  
...  
Keyword(s):  
Friction Model ◽  
Carbide Tool ◽  
Dry Machining ◽  
Sliding Velocity ◽  
Partition Model ◽  
Heat Partition ◽  
Aisi 1045 Steel ◽  
Aisi 1045 ◽  
1045 Steel ◽  
Coated Carbide

The characterization of frictional phenomena at the tool-chip-workpiece interface in metal cutting remains a challenge. This paper aims at identifying a friction model and a heat partition model at this interface during the dry cutting of an AISI1045 steel with TiN coated carbide tools. A new tribometer, based on a modified pin-on-ring system, has been used in order to reach relevant values of pressures, temperatures, and sliding velocities. Additionally a 3D Arbitrary Lagrangian Eulerian model (A.L.E.) numerical model simulating the frictional test has been developed in order to extract local parameters around the spherical pin, such as average contact pressure, average local sliding velocity, and average contact temperature, from experimental macroscopic measurements. A large range of sliding velocities [0.083–5 m/s] has been investigated. It has been shown that friction coefficient and heat partition coefficient are mainly dependant on local sliding velocity at the interface. Three friction regimes have been identified. These experimental and numerical results provide a better understanding of the tribological phenomena along the tool-chip-workpiece interfaces in dry machining of an AISI 1045 steel with a TiN coated carbide tool. Finally a new friction model and heat partition model has been developed for implementation in a numerical cutting model.

Experimental Results on Lamellar-Type Solid Lubricants in Enhancing Minimum Quantity Lubrication Machining

2016 ◽  
Vol 138 (10) ◽  
Author(s):  
Trung Kien Nguyen ◽  
Kyung-Hee Park ◽  
Patrick Y. Kwon
Keyword(s):  
Vegetable Oil ◽  
Solid Lubricant ◽  
Minimum Quantity Lubrication ◽  
Solid Lubricants ◽  
Machining Process ◽  
Minimum Quantity ◽  
Aspect Ratios ◽  
Significant Difference ◽  
1045 Steel ◽  
Lamellar Type

This paper studies the effect of various lamellar-type solid lubricants (graphite and hBN) that can be mixed into a lubricant to potentially improve the machinability of minimum quantity lubrication (MQL) machining. To examine this, the solid lubricants are classified into particles and platelets based on their aspect ratios as well as their respective sizes. In particular, the particles are classified into microparticles and nanoparticles based on their dimensions (average radius), while the platelets were classified, based on their average thickness, into two types: the “microplatelets” if the thickness is typically up to few tens of microns and the “nanoplatelets” if the thickness is well below a tenth of a micron (even down to few nanometers). Our previous work has shown that the mixture of an extremely small amount (about 0.1 wt. %) of the graphitic nanoplatelets and vegetable oil immensely enhanced the machinability of MQL machining. In this paper, many lubricants, each mixed with a particular variety of nano- or micro-platelets or one type of nanoparticles, were studied to reveal the effect of each solid lubricant on MQL machining. Prior to the MQL machining experiment, the tribological test was conducted to show that the nanoplatelets are overall more effective than the microplatelets and nanoparticles in minimizing wear despite of no significant difference in friction compared to pure vegetable oil. Consequently, the MQL ball-milling experiment was conducted with AISI 1045 steel yielding a similar trend. Surprisingly, the oil mixtures with the microplatelets increased flank wear, even compared to the pure oil lubricant when the tools with the smooth surface were used. Thus, the nanoscale thickness of these platelets is a critical requirement for the solid lubricants in enhancing the MQL machining process. However, maintaining the nanoscale thickness is not critical with the tools with the rough surfaces in enhancing the MQL process. Therefore, it is concluded that finding an optimum solid lubricant depends on not only the characteristics (material as well as morphology) of solid lubricants but also the characteristic of tool surface.

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