The Analysis of Finishing Tooling Influence on Contact Fatigue Researched by Profilometer

2013 ◽  
Vol 199 ◽  
pp. 117-122
Author(s):  
Wojciech Labuda ◽  
Adam Charchalis
Keyword(s):  
Surface Roughness ◽  
Surface Layer ◽  
Contact Fatigue ◽  
Roughness Coefficient ◽  
304L Stainless Steel ◽  
Technological Parameters ◽  
Research Results ◽  
Burnishing Process ◽  
Relative Hardness ◽  
Surface Layer Quality

The article presents the research results referring to the analysis of the influence of finish treatment ( lathing, grinding, burnishing) on the contact fatigue of steel applied to marine pump shafts. The research was performed on a roller 40 mm in diameter made of 304L stainless steel. Within the research, the optimalization of burnishing technological parameters was conducted on account of the minimalization of Ra surface roughness coefficient as well as the maximalization of SU degree of surface layer relative hardness [. The multi criteria optimalization conducted by min-max method [ with regard to minimum surface roughness as well as maximum degree of surface layer hardness demonstrated that burnishing process should be carried out at the following technological parameters: burnishing force 1.1 kN, burnishing speed 35 m/min, feed 0.13 mm/rev. In addition, the influence of the burnisher passes number on the surface layer quality was determined [.The paper will present the research results of contact fatigue examination of samples after finish machining.

The Analysis of Finishing Tooling Influence on Friction Factor Examined by T-05 Tester

2015 ◽  
Vol 220-221 ◽  
pp. 615-620
Author(s):  
Wojciech Labuda ◽  
Adam Charchalis
Keyword(s):  
Friction Factor ◽  
Contact Fatigue ◽  
Electrochemical Corrosion ◽  
Grinding Wheel ◽  
Technological Parameters ◽  
Finish Turning ◽  
Research Results ◽  
Burnishing Process ◽  
Pump Shaft ◽  
Service Conditions

The article presents the research results referring to the analysis of the influence of finish treatment (finishing turning, grinding, burnishing) on the friction factor of steel applied to marine pump shafts. The research was performed on a roller 39 mm in diameter made of stainless steel 304L. The finish tooling of pump shaft pins was carried out on a universal centre lathe. The finish turning process was carried out by means of a WNMG WF 080408 Sandvik Coromant cutting tool with replaceable inserts. The grinding process was performed by grinding attachment for lathes. The 1 – 80×10×32 – 99C 80-N V grinding wheel was used for the process. The process of burnishing was done by SRMD burnishing tool by Yamato. The burnishing process could be carried out at the following technological parameters: burnishing force 1.1 kN, burnishing speed 35 m/min, feed 0.13 mm/rev [1, 2, 3]. The paper aimed at defining the influence of burnishing on service conditions by: testing electrochemical corrosion, friction wear and contact fatigue. The work presented the research results of friction factor tests of the samples after finish turning, grinding and burnishing. In addition, the influence of the burnisher passes number on the friction factor was determined. The experiment was performed on block – roll tester machine.

The influence of burnishing parameters on the hardness and roughness on the surface layer stainless steel

2017 ◽  
Vol 2 (82) ◽  
pp. 63-69 ◽  
Author(s):  
T. Dyl
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Surface Layer ◽  
Surface Engineering ◽  
Load Capacity ◽  
Centrifugal Pumps ◽  
Technological Parameters ◽  
Hardness Tester ◽  
Burnishing Process ◽  
Technological Quality

Purpose: The aim of the study was description to the influence of technological parameters of burnishing process on the degree of relative strain hardening and surface roughness reduction ratio. Design/methodology/approach: Burnishing process carried out for stainless steels X2CrNiMo17-12-2. After the experimental research, it was determined that there was an increase in hardness and a decrease in roughness. The hardness was measured with the use of Vickers hardness tester. Observation of the microstructure of stainless steel samples was carried out using scanning electron microscopy and optical microscopy. The parameters of surface roughness measurements were performed to the principles contained in ISO standards. Findings: In the production and regeneration of metal products used in machine elements is important to technological quality surface layer. In surface engineering one of the ecological and economic treatments used for endurance and technological properties is burnishing. This is a surface forming a local plastic deformation based on the overall impression given by smooth and hard tool. Practical implications: The burnishing due the technological and economic aspect in the production and regeneration of machine parts in exchange for the abrasive processing can be used. In production engineering or technology of repair cylindrical outer surfaces (e.g. plugs propulsion shaft centrifugal pumps seawater) are finishing. You can therefore propose burnishing in exchange for abrasive machining. Originality/value: Important question to determine in the article of the research was to received appropriate technological quality. After the tests, it was found that the technological parameters are influenced by the hardness and the roughness of the outer cylindrical surfaces and the material ratio curve a convex shaped, which, taking into account the load capacity of the surface will be directly affected by its resistance to wear and corrosion of the surface layer.

scholarly journals Impact of Processing Parameters on Surface Roughness and Strain Hardening of Two-Phase Stainless Steel

2019 ◽  
Vol 26 (2) ◽  
pp. 37-44
Author(s):  
Tomasz Cyryl Dyl ◽  
Adam Charchalis ◽  
Grzegorz Stradomski ◽  
Dariusz Rydz
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Surface Layer ◽  
Strain Hardening ◽  
Experimental Research ◽  
Load Capacity ◽  
Processing Parameters ◽  
Technological Parameters ◽  
Two Phase ◽  
Burnishing Process

Abstract Products used in the construction of machines and shipbuilding as well as petrochemical industry, such as shafts, bars, pipes and the like from two-phase stainless steel are currently very popular. It is required that they meet certain quality criteria. They must be characterized by suitable properties of the surface layer to meet the requirements of potential buyers. In the article impact of processing parameters on the degree of relative strain hardening and index of surface roughness reduction were presented. The burnishing process was carried out for two-phase stainless steel. Burnishing process of the shafts neck was performed using burnisher roller. The experimental research were obtained in the surface layer increase in hardness and the material ratio curve a convex shaped, which, taking into account the load capacity of the surface will be directly affected by its resistance to wear and corrosion. The experimental research by application of the burnishing process was made in the Laboratory of Production Engineering. After the studies it was found that the hardness of the surface layer and the roughness of the shaft necks an important influenced by technological parameters of processing (burnishing speed, feed rate and depth of burnishing). The objective of applying burnishing process may be, for example, the need to increase surface smoothness and dimensional accuracy of part.

scholarly journals Rated definition of degree of cutter coating influence upon parameters of surface layer quality of parts worked

2017 ◽  
Vol 2 (7) ◽  
pp. 20-24
Author(s):  
Вячеслав Безъязычный ◽  
Vyacheslav Bezyazychnyy ◽  
Максим Басков ◽  
Maksim Baskov
Keyword(s):  
Surface Roughness ◽  
Surface Layer ◽  
Residual Stresses ◽  
Layer Surface ◽  
Wear Resistant Coatings ◽  
Cutter Wear ◽  
Definition Of ◽  
Surface Layer Quality ◽  
The Impact

The impact of cutter wear-resistant coatings upon cutting process parameters and characteristics of surface layer quality in the parts worked: residual stresses, a degree and a depth of work hardening of a surface layer, surface roughness is investigated.

scholarly journals Problems of Analyzing Microstructure Images in Assessing the Impact of Technological Parameters of Combined Strain Wave Hardening on the Quality of the Surface Layer

2019 ◽  
Author(s):  
Андрей Киричек ◽  
Andrey Kirichek ◽  
Дмитрий Соловьев ◽  
Dmitriy Solovyev ◽  
Александр Хандожко ◽  
...  
Keyword(s):  
Surface Layer ◽  
Thermal Treatment ◽  
Strain Wave ◽  
Technological Parameters ◽  
Steel Microstructure ◽  
Main Indicator ◽  
Metallographic Images ◽  
Surface Layer Quality ◽  
The Impact

The problems of analyzing metallographic images and the method of their solution using modern software for the analysis of metallographic images are described. There is given an analysis of microstructure images as the main indicator of the surface layer quality by the example of studying the research results of strain wave hardening combinations and chemical-thermal treatment, in particular the influence of previous strain wave hardening and subsequent thermal and chemical- thermal treatment on the alloy steel microstructure or previous thermal and chemical- thermal treatment and subsequent strain wave hardening. On the basis of the analysis the effectiveness of strain wave hardening and chemical and thermal treatment is established.

Can Diamond Burnishing Be Done in an Environmentally Friendly Way?

2014 ◽  
Vol 474 ◽  
pp. 411-416
Author(s):  
Gyula Varga
Keyword(s):  
Surface Roughness ◽  
Technological Parameters ◽  
Lubricating Material ◽  
Burnishing Process ◽  
Diamond Burnishing ◽  
The Subject ◽  
Base Data ◽  
Conventional Oil ◽  
Improvement Ratio

The study summarises the results of the analysis of the diamond burnishing process. The subject of the analysis was whether the diamond burnishing can be done with the use of the type of lubricating material which hardly pollutes the environment. Of course, we used conventional oil for lubrication as well, which served as base data. The effectiveness of the process was examined by analysing the surface roughness when changing the technological parameters such as burnishing speed, feed, and burnishing force. Besides examining the parameters of surface roughness we examined the improvement ratio of surface roughness as well as the function of burnishing technological parameters. The empirical formula for determination of the improvement ratio of surface roughness was determined by the use of factorial experimental design.

scholarly journals Effect of Slide Burnishing on the Surface Layer and Fatigue Life of Titanium Alloy Parts

2019 ◽  
Vol 19 (4) ◽  
pp. 35-45
Author(s):  
K. Zaleski ◽  
A. Skoczylas
Keyword(s):  
Surface Roughness ◽  
Titanium Alloy ◽  
Surface Layer ◽  
Fatigue Life ◽  
Average Roughness ◽  
Maximum Increase ◽  
Burnishing Process ◽  
Slide Burnishing ◽  
Machining Fluids ◽  
Reduced Surface

AbstractThe paper presents the results of a study investigating the effect of slide burnishing on the surface roughness, surface layer microhardness and fatigue life of Ti6Al2Mo2Cr titanium alloy parts. The burnishing process was performed with the use of a diamond tip tool. Different machining fluids were used as machining media. Prior to burnishing, the samples were subjected to turning. The burnishing process led to reduced surface roughness (average roughness Ra decreased by 3.5 times and roughness Rz decreased by 2.5 times) as well as increased surface layer microhardness (microhardness maximum increase by 12%) and fatigue life of the tested parts. A relationship between the machining medium and the burnishing effects was also observed. The addition of a surface-active polymethyl methacrylate solution to the machining medium led to an increase in the surface layer microhardness and fatigue life of the workpiece.

Analysis of deburring effectiveness and surface layer properties around edges of workpieces made of 7075 aluminium alloy

2018 ◽  
Vol 90 (3) ◽  
pp. 515-523 ◽  
Author(s):  
Jakub Matuszak ◽  
Kazimierz Zaleski
Keyword(s):  
Residual Stress ◽  
Surface Roughness ◽  
Surface Layer ◽  
Aluminium Alloy ◽  
Edge State ◽  
Machining Process ◽  
Edge States ◽  
Technological Parameters ◽  
Content Type ◽  
Wire Brushing

Purpose This paper aims to present a comprehensive analysis of deburring effectiveness and surface layer properties after deburring process by wire brushing from milled 7075 aluminium alloys objects. Edge states (rounding, chamfering), surface roughness around the edge, microhardness and residual stress distribution were analyzed. Design/methodology/approach During the machining process, undesirable phenomenon occurs, which is the formation of burrs at the edges of workpieces. They occur in most elements formed by machining. There are many methods that can be used for deburring, but in the case of large components, typical of aerospace industry, using certain methods becomes difficult or uneconomic. Taking advantage of the fact that a part is mounted on the machine, it is advisable to make deburring operation the last action. This operation can be carried out by wire brushing. Findings On the basis of conducted studies, it was demonstrated that it was possible to choose such technological brushing conditions as to ensure an effective process of deburring, form appropriate edge state and generate the desired surface layer properties. Practical implications The method presented in the article allows for efficient, automatic deburring, especially for large components made of 7075 aluminium alloy. This eliminates manual, time-consuming methods of removing burrs by locksmiths. Moreover, the results allow to evaluate changes occurring in the surface layer after brushing process. Originality/value Results of brushing experiment provide full information on selection of technological parameters to obtain the required surface roughness and edge state. Moreover, analysis of surface layer properties (microhardness, residual stress) allows to assess the degree of impact hitting fibre on the workpiece.

INVESTIGATIONS OF TECHNOLOGICAL PARAMETERS IMPACT UPON QUALITY FORMATION IN SURFACE LAYER OF PARTS AT CENTRIFUGAL ROTARY PROCESSING

2021 ◽  
Vol 2021 (8) ◽  
pp. 4-13
Author(s):  
Mihail Tamarkin ◽  
Elina Tischenko ◽  
Van Nguen ◽  
Aleksey Mordovcev
Keyword(s):  
Surface Layer ◽  
High Speed ◽  
Metal Removal ◽  
Experimental Investigations ◽  
Technological Parameters ◽  
Motion Speed ◽  
Maximum Penetration ◽  
Definition Of ◽  
Surface Layer Quality ◽  
The Impact

In the paper there are carried out investigations on the definition of the basic technological parameters impact of centrifugal-rotary processing in abrasive environment upon formation of surface layer quality in the parts worked. There is used a finite element method of deformation modeling in granulated massive rotating under the impact of centrifugal forces with the use of the (Comsol Multiphysics) packet. On the basis of computer the high-speed shooting processing and theoretical investigations of the process dynamics there are defined distributions of pressures and granule motion speed in the working chamber. A specified model of abrasive granule encounter with the surface worked at the centrifugal rotary processing on the basis of the modern researches and analysis with the use of the Ansys software. The dependences are obtained for the definition of the maximum penetration depth of environment particles into the surface of the part worked, metal removal, surface roughness which adequacy is confirmed by the results of experimental investigations. There is developed a specified procedure for the computation of roughness height parameters of the surface worked and machining capacity. A specified procedure for the computation of metal removal from the surface worked of parts is offered. An algorithm for the optimization of an engineering process is developed. The investigation results are introduced into production.

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