Temat: steel surface - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The experimental analysis of the burnishing process using the methods : NPS
Autorzy:: Dyl, T. C.
Powiązania:: https://bibliotekanauki.pl/articles/245624.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: ballizing process
steel tube holes
surface plastic forming
roughness surface
Opis:: The paper presents selected results of experimental research of burnishing process of the steel tube holes. The ballizing process (NPS) is the method of burnishing where consists of pushing the tool through the hole, wherein the ball is greater in size than the opening of the value of the reduction ratio. Used tools to burnishing are hard and smooth surface. Burnishing elements are made of shape: ball, roll and disk. The ballizing process is carry out by a ball. The precise tube holes are made mostly methods abrasive machining. Machining these methods can usually maintain a within the tolerances established by the constructor size and shape and surface roughness. However, not achieved a satisfactory state surface layer of tube holes. Improve the properties of the surface layer can be obtained after application, as finishing, the slide burnishing. Modelling of the burnishing process using the method, NPS is to determine the impact of a specific curvature a rigid tool with of the workpiece. Ballizing process can increase the dimensional accuracy of tube holes, reducing the surface roughness, the strengthening of the surface layer, compressive residual stresses constitution. Compressive internal stresses substantially influence the fatigue life of machine parts. The aim of experimental research was to obtain surface layer state of compressive residual stress and the material ratio curve of convexity shape.
Źródło:: Journal of KONES; 2016, 23, 1; 107-113
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The influence of the geometry of the cutting edge and machining parameters of duplex cast steel after turning
Autorzy:: Dyl, T. C.
Powiązania:: https://bibliotekanauki.pl/articles/246936.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: turning
finishing
forming surface layer
surface roughness reduction
duplex cast steel
Opis:: The development and research activity is connected to the production of newer and more functional products. Innovative processes are being developed and applied; services and projects are delivered. Products are work items that should be initially designed, then manufactured and finally sold and utilized. Examples of products may be airplanes, ships, cars, machine tools, gears, crankshafts, drive shaft, tubes as well as gasoline, electricity and gas, etc. The product has to meet the expectations of the future use. It is characterized by a set of functional features. In the case of machines and their capabilities and performance, for example, durability, reliability, resulting from the characteristics represented by the structural units forming the structure. The formation of the desired features of the surface layer in the technological process is an important problem due to the ability of the elements of kinematic pairs to fulfil the function as long as possible foreseen for them. The article presents results of experimental studies of turning cast steel grade GX2CrNiMoCuN25-6-3-3. The aim of the research was to determine the geometry of the cutting edge and the technological parameters of cutting that are conducive to obtaining the roughness in the field of very accurate machining. It can achieve the appropriate technological quality of the workpiece surface. After these experimental studies was determined that there is a reduction roughness using suitable inserts. Turning was made for the duplex cast steel. The technological parameters of machining process were used: feed rate f = 0.1-0.2 mm/rev, depth of cut ap = 0.5 mm, cutting speed vc = 50-100 m/min. Turning was made using universal lathe CDS 500x1000 equipped with CCMT carbide tipped inserts.
Źródło:: Journal of KONES; 2018, 25, 4; 75-81
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The burnishing process of the stainless steel in aspect of the reduction roughness and surface hardening
Autorzy:: Dyl, T. C.
Powiązania:: https://bibliotekanauki.pl/articles/246904.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: burnishing rolling–pressuring process
BRP
surface roughness reduction ratio
degree of relative strain hardening
stainless steel
Opis:: In the article were presented influence of technological parameters of burnishing process on the degree of hardness and reduction roughness. Burnishing process carried out for stainless steels X2CrNiMo17-12-2. 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 rolling – pressuring process (BRP) method were made in the Laboratory of Production Engineering at the Department of Marine Maintenance at the Faculty of Marine Engineering at the Gdynia Maritime University. 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 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. To achieve the objectives strengthen and smooth of burnishing stainless steel should be used the one pass burnisher roller and feed fn = 0.2 mm/rev and disk burnishing tool feed an = 1.0 mm and burnishing speed vn = 70 m/min.
Źródło:: Journal of KONES; 2017, 24, 3; 63-69
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The effect of parameters burnishing rolling – pressuring process in aspect to technological quality surface layer of 316L stainless steel
Autorzy:: Dyl, T. C.
Powiązania:: https://bibliotekanauki.pl/articles/244990.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: burnishing process
hardness
roughness
surface layer
stainless steel
proces nagniatania
twardość
chropowatość
warstwa powierzchniowa
stal nierdzewna
Opis:: In the manufacturing of machine elements was important to technological quality products. In surface engineering one of the economic and ecological treatments used for technological properties were burnishing rolling – pressuring process. This is a surface plastic forming a local plastic deformation based on the overall impression given by smooth and hard tool. In production, engineering cylindrical outer surfaces (e.g. plugs propulsion shaft centrifugal pumps seawater) were finishing. You can therefore propose burnishing in exchange for abrasive machining. The article presents the influence of parameters for burnishing rolling – pressuring process on the degree of relative strain hardening and surface roughness reduction ratio. Burnishing process carried out for 316L stainless steels. After the experimental study, it was determined that there was an increase in hardness and a decrease in roughness of the top outer cylindrical layer of stainless steel, which can be applied to the centrifugal pump shafts ship. Important question to determine in the article of the research was to receive appropriate technological quality. The burnishing due the technological and economic aspect in the production of machine parts in exchange for the abrasive processing can be used. After the experiments, it was found that the technical 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.
Źródło:: Journal of KONES; 2018, 25, 1; 75-81
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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