Wyniki wyszukiwania - BazTech

1

The influence of finish tooling on friction properties of steel applied to sea water pump shafts

Labuda W., Charchalis A.

Journal of KONES

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2014

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Vol. 21, No. 2

185--192

EN

Angular momentum pumps are very often applied on-board ships. These pumps are used in cooling circuits of medium and high power engines, power plant boilers as well as bilge, ballast and fire installations. Such an extensive use of angular momentum pumps on board is connected with their numerous advantages. However, during operation the wear of marine hull, the rotor and shaft seals take place. The research attempts to increase the service life of shafts. The article presents the research results referring to the analysis of the influence of finish treatment (finishing turning, grinding, burnishing) on the friction properties of steel applied to marine pump shafts. The research was performed on a roller 39 mm in diameter made of 304L stainless steel. The finish tooling of pump shaft pins was carry out on a universal centre lathe. The finish turning process was carried out by means of a WING WF 080408 Sandvik Coromant cutting tool with replaceable inserts. The grinding process was performed by grinding attachment for lathes. The 1 – 80x10x32 – 99C 80-N V grinding wheel was used for the process. The process of burnishing was done by SRMD single roll burnishing tool by Yamato. The burnishing process was 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 number of burnishing tool passes on the friction was determined. The paper will present the research results of test on the friction properties examination of samples after finish machining. The experiment was performed on T-05 block-on-ring wear tester.

2

Preliminary research on tribologic wear of marine pump shaft pins

Labuda W., Charchalis A.

Zeszyty Naukowe Akademii Morskiej w Gdyni

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2013

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nr 81

55--62

EN

Centrifugal angular momentum pumps are utilized in the cooling system of high and medium speed engines, for supplying boilers, in bilge systems, ballast systems and in firefighting installations. Such an extensive use of angular momentum pumps on board is connected with their numerous advantages. However during operation the wear of marine hull, the rotor and shaft seals takes place. The research aimed at examining the improvement of operating durability of marine pumps in place of seals mounting. The service properties are related to contact wear tests, tribologic wear and electrochemical corrosion that are to be carried out. The paper presents the first stage of tribologic wear tests which dealt with the selection of counter sample material and of the lubricating agent for the tribosystem. A roller made of stainless X5CrNi18-10 steel was used for the research. The process of sample surface finish lathing was performed by a cutting tool provided with super finish plates Wiper type by Sandvik Coromant. On the basis of the results obtained the counter sample material was defined (C45 steel) for performing appropriate tribologic tests. The lubricant for the matched tribologic couple was chosen to be the machine oil enriched with an improver.

PL

Odśrodkowe pompy krętne są stosowane w obiegach chłodzenia silników średniej i dużej mocy, do zasilania kotłów oraz w instalacjach zęzowych, balastowych i przeciwpożarowych. Powszechne stosowanie pomp krętnych na statkach wiąże się z ich licznymi korzyściami. Jednakże podczas eksploatacji występuje zużycie kadłuba, wirnika, wału oraz uszczelnień. W pracy badawczej podjęto próbę zwiększenia trwałości eksploatacyjnej wałów pomp wody morskiej w miejscu osadzenia uszczelnień. Właściwości eksploatacyjne związane są z wykonaniem badań zmęczenia stykowego, zużycia tribologicznego oraz korozji elektrochemicznej W artykule przedstawiono pierwszy etap badań tribologicznych, który dotyczył doboru materiału przeciwpróbki oraz środka smarującego parę tribologiczną. Do badań wykorzystano wałek wykonany ze stali odpornej na korozję X5CrNi18-10. Proces toczenia wykończeniowego powierzchni próbki wykonano nożem z wymiennymi płytkami dogładzającymi typu Wiper firmy Sandvik Coromant. Na podstawie uzyskanych wyników badań określono materiał przeciwpróbki (stal C45) do przeprowadzenia właściwych badań tribologicznych. Środkiem smarującym skojarzonej pary tribologicznej będzie olej maszynowy uzupełniony dodatkiem uszlachetniającym.

3

The analysis of influence on friction factor at constant force for marine pump shafts after finishing treatment

Labuda W., Charchalis A.

Journal of KONES

|

2013

|

Vol. 20, No. 2

245--251

EN

Angular momentum pumps are very often used in cooling circuits of medium and high power engines, power plant boilers as well as bilge, ballast and fire installations. Such an extensive use of angular momentum pumps on board is connected with their numerous advantages. However during operation the wear of marine hull, the rotor and shaft seals takes place. The research attempts to increase the service life of shafts. 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 304L stainless steel. The finish tooling of pump shaft pins was carry 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 1-80x10x32-99C 80-N V grinding wheel was used for the process. The process of burnishing was done by SRMD single roll burnishing tool by Yamato. The burnishing process was 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 number of burnishing tool passes on the friction factor was determined. 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.

4

The analysis of finish tooling influence on wear intensity of marine pump shaft

Labuda W., Charchalis A.

Journal of KONES

|

2013

|

Vol. 20, No. 1

163--170

EN

Angular momentum pumps are very often applied onboard ships. These pumps are used in cooling circuits of medium and high power engines, power plant boilers as well as bilge, ballast and fire installations. Such an extensive use of angular momentum pumps on board is connected with their numerous advantages. However during operation the wear of marine hull, the rotor and shaft seals takes place. The research attempts to increase the service life of shafts The article presents the research results referring to the analysis of the influence of finish treatment (finishing turning, grinding, burnishing) on the friction of steel applied to marine pump shafts. The research was performed on a roller 39 mm in diameter made of 304L stainless steel. The finish tooling of pump shaft pins was carry 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 1-80x10x32-99C 80-N V grinding wheel was used for the process. The process of burnishing was done by SRMD single roll burnishing tool by Yamato. The burnishing process was 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 number of burnishing tool passes on the friction was determined. The paper will present the research results of test on the wear intensity examination of samples after finish machining. The experiment was performed on block – roll tester machine.

5

The analysis of geometric structure of the pins in marine angular momentum pumps shafts that underwent finish treatment

Labuda W., Charachalis A.

Journal of Polish CIMAC

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2012

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Vol. 7, no 1

141-148

EN

Angular momentum pumps are very often applied onboard ships. These pumps are used in cooling circuits of medium and high power engines , power plant boilers and in bilge, ballast and fire installations. Very extensive use of angular momentum pumps on board is connected with their numerous advantages. During operation the wear of marine hull, the rotor and shaft seals takes place. The research attempts to increase the service life of shafts. The article presents the research results referring to the analysis of the influence of finish treatment (lathing, grinding and burnishing) on the geometric structure of the surface of steel applied to marine pump shafts. The research was performed on a roller of 40 mm in diameter made of X5CrNi18-10 (AISI 304 L) stainless steel. The lathing 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 - 80x10x32 - 99C 80-N V grinding wheel was used for the process. The process of burnishing was done by SRMD burnisher by Yamato. In addition, the influence of the burnisher passes number on the geometric structure of the surface properties was determined. The paper will present the results of research related to roughness parameters, material ratio and surface waviness.

6

The analysis of finishing tooling influence on corrosion properties researched by potentiodynamic method

Labuda W., Charchalis A.

Journal of KONES

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2012

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Vol. 19, No. 2

283-288

EN

Angular momentum pumps are very often applied onboard ships. These pumps are used in cooling circuits of medium and high power engines, power plant boilers and in bilge, ballast and fire installations. Very extensive use of angular momentum pumps on board is connected with their numerous advantages. During operation the wear of marine hull, the rotor and shaft seals take place. The research attempts to increase the service life of shafts. The article presents the research results referring to the analysis of the influence.. of finish treatment (lathing, grinding and burnishing) on the corrosion properties of steel applied to marine pump shafts. The research was performed on a roller of 40 mm in diameter made of X5CrNi 18-10 (AISI 304 L) stainless steel. The lathing 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 - 80x10x32 - 99C 80-N V grinding wheel was used for the process. The process of burnishing was done by SRMD burnisher by Yamato. In addition, the influence of the burnisher passes number on the corrosion properties was determined. The paper will present the results of potentiodynamic research. To conduct the survey the Atlas 0531 EU and IA potentiostat will be used. Determination of parameters of the corrosion process will be executed on Elfit2 computer program.

7

The analysis of finishing tooling influence on corrosion properties researched by EIS

Labuda W., Charchalis A.

Journal of KONES

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2012

|

Vol. 19, No. 1

237-244

EN

Angular momentum pumps are very often applied onboard ships. These pumps are used in cooling circuits of medium and high power engines, power plant boilers and in bilge, ballast and fire installations. Very extensive use of angular momentum pumps on board is connected with their numerous advantages. During operation the wear of marine hull, the rotor and shaft seals take place. The research attempts to increase the service life of shafts. The article presents the research results referring to the analysis of the influence of finish treatment (lathing, grinding and burnishing) on the corrosion properties of steel applied to marine pump shafts. The research was performed on a roller of 40 mm in diameter made of X5CrNi18-10 (AISI 304 L) stainless steel. The lathing 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 - 80x10x32 - 99C 80-N V grinding wheel was used for the process. The process of burnishing was done by SRMD burnisher by Yamato. In addition, the influence of the burnisher passes number on the corrosion properties was determined. The paper will present the results of electrochemical impedance spectroscopy research. To conduct the survey the Atlas 0531 EU and IA potentiostat was used. Determination of the corrosion process parameters was performed computer programs: AtlasLab 2.0 and EIS Spectrum Analyzer.

8

The analysis of the influence of the burnishing process on corrosion properties of steel applied to sea water pump shafts

Labuda W., Starosta R., Charchalis A.

Journal of KONES

|

2011

|

Vol. 18, No. 4

221-228

EN

Angular momentum pumps are very often applied onboard ships. These pumps are used in cooling circuits of medium and high power engines, power plant boilers and in bilge, ballast and fire installations. Very extensive use of angular momentum pumps on board is connected with their numerous advantages. During operation the wear of marine hull, the rotor and shaft seals take place. The research attempts to increase the service life of shafts. The article presents the research results referring to the analysis of the influence of lathing and burnishing on the corrosion properties of steel applied to marine pump shafts. The research was performed on a roller of 40 mm in diameter made of X5CrNi 18-10 (AISI304 L) stainless steel. The lathing process was carried out by means of a WNMG WF 080408 Sandvik Coromant cutting tool with replaceable inserts. The process of burnishing was done by SRMD burnisher by Yamato. In addition, the influence of the burnisher passes number on the corrosion properties was determined. The paper will present the results of potentiodynamic research. To conduct the survey the Atlas 0531 EU & IA potentiostat will be used. Determination of parameters of the corrosion process will be executed on Elfit2 computer program.

9

Estimation of the influence of burnishing process on steel X5CRNIL810 internal stresses

Labuda W., Starosta R., Zdunek J.

Journal of KONES

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2010

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Vol. 17, No. 4

265-270

EN

Angular momentum pumps are frequently applied on board ships. As the pumps are working in hard conditions they are made from materials resistant to cavitation wear and electrochemical corrosion. The most popular damage of pump shaft is neck wear in place where seals are mounted. Burnishing, as modern finish plastic tooling method, makes it possible to get high technological quality of elements. The proposed process of burnishing shaft pins is designed to increase the service life of marine seawater pump shaft installations, which should enhance the economic effect. Thanks to its numerous advantages burnishing was proposed to angular momentum pumps shafts tooling instead of finish machining (finish turning, grinding, lapping). The goal was to estimate optimal burnishing parameters which enable receiving biggest strengthening and lowest roughness factor of angular momentum pumps shafts. The tool used was one-roll burnishing tool SRMD type produced by Yamato. The aim of this study was to determine the internat stresses occurring in the subsurface layer after machining carried out, and after burnishing the surface of marine pump shaft pins made of X5CrNH810 stainless steel.

10

Estimation of the influence of passes number burnishing tool on ships pumps shafts surface layers strengthening and roughness changes

Charchalis A., Starosta R., Labuda W.

Journal of KONES

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2009

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Vol. 16, No. 4

43-50

EN

Angular momentum pumps are very often applied on ships. Because the pumps are working in hard conditions they are made from cavitation wear proof and electrochemical corrosion resistant materials. The most popular damage of pumps haft is neck wear in place where seals are mounted. Burnishing as modern finish plastic tooling method makes it possible to achieve high technological quality of elements. Because of many burnishing advantages, the method was proposed to angular momentum pumps shafts treatment instead of finish machining (finish turning, grinding, lapping). The tool used was a roller burnishing tool SRMD type produced by Yamato. During the technological process, optimum burnishing parameters were applied in order to ensure high degree of surface layer relative hardness and to decrease surface roughness of angular momentum pumps shafts made of stainless steel X5CrNH810. The object of the paper was to define the influence of burnishing tool passes number on the ships pumps shafts surface layers strengthening and roughness changes.

PL

Na statkach bardzo często wykorzystuje się pompy krętne. Ze względu na trudne warunki ich pracy do budowy tego rodzaju pomp stosuje się materiały odporne na zużycie kawitacyjne oraz korozję elektrochemiczną wywołaną przez wodę morską. W przypadku wałów pomp najczęstszą niesprawnością jest zużycie czopów (korozyjne, cierne i zmęczenie stykowe) w miejscu montażu uszczelnień (dławic). Obróbka nagniataniem jako metoda wykańczająca obróbki plastycznej umożliwia uzyskanie elementów maszyn o odpowiedniej jakości technologicznej. W związku z licznymi korzyściami stosowania obróbki nagniataniem proponuje się jej zastosowanie w zamian za wykańczającą obróbkę skrawaniem (toczenie wykańczające, szlifowanie, polerowanie) do wałów okrętowych pomp krętnych. Proces nagniatania przeprowadzono nagniatakiem jednorolkowym SRMD firmy Yamato. Podczas procesu technologicznego zastosowano zoptymalizowane parametry nagniatania, umożliwiające uzyskanie największego stopnia względnego umocnienia warstwy wierzchniej i zmniejszenia chropowatości powierzchni czopów wałów okrętowych pomp krętnych wykonanych ze stali nierdzewnej X5Cr Nil 8 10. Celem pracy było określenie wpływu liczby przejść nagniataka na poprawę twardości i chropowatości czopów wałów pomp okrętowych.

11

The influence of burnishing parameters on the roughness, plastic strain and shape deviations of marine pumps crankshaft pins in fresh water installations

Charchalis A., Starosta R., Labuda W.

Journal of KONBiN

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2009

|

No. 1-2 (9-10)

57-66

EN

Angular momentum pumps are frequently applied in marine installations. Due to hard working conditions of these pumps, special corrosion wear resistant materials as well as the ones resistant to electrochemical corrosion caused by sea water are used for their production. In case of pump shafts the most frequent inefficiency is the pin wear (corrosive wear, friction wear and contact wear) in place of sealings assembly (throttle). Burnishing as finish plastic tooling method enables obtaining machine elements of proper technological quality. Bearing in mind numerous advantages of using burnishing, it is suggested to apply it instead of machining (finish turning, grinding, polishing) to the shafts of marine angular momentum pumps. The burnishing process was carried out by SRMD single roll burnishing tool by Yamato. The object of the paper was to determine the influence of burnishing parameters and the number of burnishing tool passes on the improvement of roughness, plastic deformation and the shape deviation of marine pumps crank pins.

PL

W instalacjach okrętowych często wykorzystywane są pompy wirowe. Ze względu na trudne warunki ich pracy do budowy tego rodzaju pomp stosuje się materiały odporne na zużycie erozyjne oraz korozję elektrochemiczną wywołaną przez wodę morską. W przypadku wałów pomp najczęstszą niesprawnością jest zużycie czopów (korozyjne, cierne i zmęczenie stykowe) w miejscu montażu uszczelnień (dławic). Obróbka nagniataniem jako metoda wykańczająca obróbki plastycznej umożliwia uzyskanie elementów maszyn o odpowiedniej jakości technologicznej. W związku z licznymi korzyściami stosowania obróbki nagniataniem proponuje się jej zastosowanie w zamian za wykańczającą obróbkę skrawaniem (toczenie wykańczające, szlifowanie, polerowanie) do wałów okrętowych pomp krętnych. Proces nagniatania przeprowadzono nagniatakiem jednorolkowym SRMD firmy Yamato. Celem pracy było określenie wpływu parametrów nagniatania i liczby przejść nagniataka na poprawę chropowatości, odkształcenie plastyczne i odchyłek kształtu czopów wałów pomp okrętowych.

12

Estimation of the influence of burnishing parameters on steel X5CrNi1810 surface layers strengthening and roughness changes

Labuda W., Starosta R., Dyl R.

Journal of KONES

|

2008

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Vol. 15, No. 3

259-267

EN

Angular momentum pumps are applied very often on ships. Because the pumps are working in hard conditions they are made from cavitation wear proof and electrochemical corrosion proof materials. The most popular damage of pump shaft is neck wear in place where seals are mounted. Burnishing as modern finish plastic tooling method makes possible getting high technological quality of elements. Because of many burnishing advantages it was proposed to shafts angular momentum pumps working instead of finish machining (finish turning, grinding, lapping). The goal was to estimate optimal burnishing parameters, which enable to receive biggest strengthening, and lowest roughness factor of angular momentum pumps shafts. The shaft necks are made from stainless steel X5CrNi1810. The tool, one - roller burnishing tool SRMD type produced by Yamato. Its axis is parallel to working shaft axis. During working technological parameters like force, velocity and feed were changed.

PL

Na statkach bardzo często wykorzystuje się pompy krętne. Ze względu na trudne warunki ich pracy do budowy tego rodzaju pomp stosuje się materiały odporne na zużycie kawitacyjne oraz korozję elektrochemiczną wywołaną przez wodę morską. W przypadku wałów pomp najczęstszą niesprawnością jest zużycie czopów (korozyjne, cierne i zmęczenie stykowe) w miejscu montażu uszczelnień (dławic). Obróbka nagniataniem jako nowoczesna metoda wykańczająca obróbki plastycznej umożliwia uzyskanie elementów maszyn o odpowiedniej jakości technologicznej. W związku z licznymi korzyściami stosowania obróbki nagniataniem proponuje się jej zastosowanie w zamian za wykańczającą obróbkę skrawaniem (toczenie wykańczające, szlifowanie, polerowanie) do wałów okrętowych pomp krętnych. Celem pracy było wyznaczenie optymalnych parametrów nagniatania dla uzyskania największego stopienia względnego umocnienia warstwy wierzchniej i zmniejszenia chropowatości powierzchni czopów wałów okrętowych pomp krętnych wykonanych ze stali nierdzewnej X5CrNi1810. Proces nagniatania przeprowadzono nagniatakiem jednorolkowym SRMD firmy Yamato, który charakteryzuje się równoległością osi części roboczej do osi obrabianego czopu. Podczas nagniatania zastosowano zróżnicowane parametry procesu technologicznego takie jak: siła nagniatania, prędkość nagniatania oraz posuw.