Tribologia: Finnish Journal of Tribology最新文献_第5页

CAVITATION EROSION RESISTANCE OF HIGH-ALLOYEDFe-BASED WELD HARDFACINGS DEPOSITED VIA SMAWMETHOD smw法堆焊高合金铁基堆焊材料的抗空蚀性

Tribologia: Finnish Journal of Tribology Pub Date : 2022-12-30 DOI: 10.5604/01.3001.0016.1616

M. Szala, Tadeusz Hejwowski

{"title":"CAVITATION EROSION RESISTANCE OF HIGH-ALLOYED\u0000Fe-BASED WELD HARDFACINGS DEPOSITED VIA SMAW\u0000METHOD","authors":"M. Szala, Tadeusz Hejwowski","doi":"10.5604/01.3001.0016.1616","DOIUrl":"https://doi.org/10.5604/01.3001.0016.1616","url":null,"abstract":"In order to investigate the cavitation erosion (CE) resistance of high-alloyed ferrous hardfacings, the three\u0000different deposits were pad welded by the shielded metal arc welding (SMAW) method. Consumable\u0000electrodes differed in the content of carbide-forming elements, and pad welds were deposited onto the S235JR\u0000structural. The CE tests, conducted according to ASTM G32 standard, indicated that hardfacings reveal\u0000lower mass loss than the reference stainless steel AISI 304 (X5CrNi18-10). The hardfacings show increasing\u0000resistance to CE in the following order: Cr-C < Cr-C-Mo < Cr-C-Mo-V-W. The reference steel revealed more\u0000than twenty times higher material loss in the CE test than Cr-C-Mo-V-W hardfacing, which had outstanding\u0000hardness (825HV0.3). The profilometric measurements and scanning electron microscopy investigations\u0000showed large changes in valley and peak sizes of the roughness profiles for materials which displayed high\u0000erosion rates. The erosion mechanism of the coatings can be classified as brittle-ductile and relies on cracking,\u0000chunk removal of material, pits and craters formation, and deformation of fractured material tips and edges.\u0000Hardfacing materials failed primarily due to brittle fractures with different severities. Specimen surface\u0000degradation follows the changes in Ra, Rz, Rv, and Rp roughness parameters and well-corresponds to the\u0000proposed roughness rate (RR) parameter.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87753840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

COMPOSITE MATERIAL WITH CAST IRON MATRIX DESIGNEDFOR BRAKE SYSTEMS OF TECHNICAL MEANS OF TRANSPORT 为技术运输工具制动系统设计的铸铁基复合材料

Tribologia: Finnish Journal of Tribology Pub Date : 2022-11-30 DOI: 10.5604/01.3001.0016.1036

A. Posmyk, J. Myalski

{"title":"COMPOSITE MATERIAL WITH CAST IRON MATRIX DESIGNED\u0000FOR BRAKE SYSTEMS OF TECHNICAL MEANS OF TRANSPORT","authors":"A. Posmyk, J. Myalski","doi":"10.5604/01.3001.0016.1036","DOIUrl":"https://doi.org/10.5604/01.3001.0016.1036","url":null,"abstract":"The paper presents the basics of manufacturing and the tribological properties of the developed cast ironceramic\u0000composite designed for brake discs or drums. The matrix of the composite consists of GJL-150 grey\u0000cast iron used for the production of brake discs. The reinforcing phase is a SiC foam with an activated surface.\u0000The use of ceramic foam simplifies the production process because it does not require expensive mixing of\u0000the matrix and the reinforcing phase to ensure the homogeneity of the composite. An addition of 10% SiC\u0000(λSiC=100-350 Wm-1K-1) improves the thermal conductivity of cast iron (λCI=50-60 Wm-1K-1). The presence of\u0000foam elements homogenously distributed throughout the whole matrix volume reduces the wear of both the\u0000composite and the counter-sample. The results of comparative studies of contacts between the cast iron and\u0000the composite brake disc showed almost a threefold lower wear of the pad and disc and about a 10°C lower\u0000temperature in the pad near the friction zone under the pressure of 1 MPa and at a sliding velocity of 0.5 m/s.\u0000The significantly lower wear of the friction elements of the brake system will contribute to a reduction in\u0000environmental pollution by wear debris, which is required by European Union directives.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74086834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CONCEPT FOR AN ADVANCED TRIBOLOGICAL SYSTEMSRESEARCH METHODOLOGY 先进摩擦学系统研究方法的概念

Tribologia: Finnish Journal of Tribology Pub Date : 2022-11-30 DOI: 10.5604/01.3001.0016.1035

M. Niemczewska-Wójcik, M. Osiewicz

{"title":"CONCEPT FOR AN ADVANCED TRIBOLOGICAL SYSTEMS\u0000RESEARCH METHODOLOGY","authors":"M. Niemczewska-Wójcik, M. Osiewicz","doi":"10.5604/01.3001.0016.1035","DOIUrl":"https://doi.org/10.5604/01.3001.0016.1035","url":null,"abstract":"The conduct of research on advanced tribological systems in order to determine the best solutions in terms\u0000of the durability and reliability of technical objects containing these systems requires a multifaceted and\u0000comprehensive approach due to the complexity of tribological processes occurring during operation.\u0000Observation of these processes is complicated and limited due to the inaccessibility of the friction zone.\u0000Therefore, progress in improving tribological characteristics is mainly determined by developing laboratory\u0000test methods.\u0000From the point of view of describing the tribological properties of the surface layer, the geometric structure\u0000of the surface (shape, waviness, roughness and surface defects), the structure of the physicochemical zones\u0000(microstructure, mechanical properties, physicochemical properties), and the ability to properly interact with\u0000the lubricant should be taken into account. Studies of advanced tribological systems should therefore include\u0000two complementary test methods, i.e., friction wear tests and surface layer tests (as manufactured and as\u0000operated).\u0000This paper presents a concept for research on advanced tribological systems and a justification for conducting\u0000complementary research on these systems, referring to selected examples (processing tools, joint implants, and\u0000dental implants). The research results are examples which illustrate the essence of conducting complementary\u0000research.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72738711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

TESTING THE CRITICAL VELOCITY OF A MAGNETIC FLUIDSEAL WORKING IN A WATER ENVIRONMENT 测试在水环境中工作的磁性流体密封的临界速度

Tribologia: Finnish Journal of Tribology Pub Date : 2022-11-30 DOI: 10.5604/01.3001.0016.1042

M. Szczęch, W. Horak

引用次数: 0

INFLUENCE OF PRE-HARDENED GX120Mn13 CAST STEELON THE TRIBOLOGICAL PROPERTIES UNDER TECHNICALLYDRY FRICTION 预硬化GX120Mn13铸钢对技术干摩擦摩擦学性能的影响

Tribologia: Finnish Journal of Tribology Pub Date : 2022-11-30 DOI: 10.5604/01.3001.0016.1020

B. Kalandyk, R. Zapała, M. Madej, J. Kasińska, K. Piotrowska

{"title":"INFLUENCE OF PRE-HARDENED GX120Mn13 CAST STEEL\u0000ON THE TRIBOLOGICAL PROPERTIES UNDER TECHNICALLY\u0000DRY FRICTION","authors":"B. Kalandyk, R. Zapała, M. Madej, J. Kasińska, K. Piotrowska","doi":"10.5604/01.3001.0016.1020","DOIUrl":"https://doi.org/10.5604/01.3001.0016.1020","url":null,"abstract":"This paper presents the results of tribological tests on high manganese GX120Mn13 cast steel under technically\u0000dry friction conditions. The tests were carried out using a TRB3 ball-on-disc tribometer using a 6mm-diameter\u0000SiC ball as a counter-sample for a specimen made of GX120Mn13 cast steel containing a localised prehardening\u0000area on the test surface with a hardness of approximately 597 HV10 (the non-hardened area had a\u0000hardness of approximately 325-364 HV10). During the test, the ball travelled in a 16.68 mm diameter circle\u0000and passed through both hardening and non-hardened areas. The resulting erosion marks were assessed using\u0000an optical profilometer and scanning microscope tests, which showed that the maximum depth of erosion in\u0000the previously hardening area was 0.77 μm and was more than twice as deep as in the non-hardened areas\u0000surveyed. In contrast, the area of attrition was twice as small as in the non-hardened area located in the axis of\u0000the previously applied load and more than three times smaller, but in the area located on the side of the axis\u0000and 8.34 mm away from it. Thus, from the point of view of the abrasion resistance of GX120Mn13 cast steel,\u0000the validity of its prior hardening before the operation was confirmed.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72626882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

EFFECT OF WELDING TECHNIQUE AND THERMAL TREATMENTPARAMETERS ON ABRASIVE WEAR OF STEEL S355 焊接工艺和热处理参数对s355钢磨粒磨损的影响

Tribologia: Finnish Journal of Tribology Pub Date : 2022-11-30 DOI: 10.5604/01.3001.0016.1021

Ł. Konat, B. Białobrzeska

引用次数: 2

ANALYSIS OF THE INFLUENCE OF HEXAGONAL BORONNITRIDE ON TRIBOLOGICAL PROPERTIES OF GREASE 六方氮化硼对润滑脂摩擦学性能的影响分析

Tribologia: Finnish Journal of Tribology Pub Date : 2022-11-30 DOI: 10.5604/01.3001.0016.1041

Szymon Senyk, T. Kałdoński

{"title":"ANALYSIS OF THE INFLUENCE OF HEXAGONAL BORON\u0000NITRIDE ON TRIBOLOGICAL PROPERTIES OF GREASE","authors":"Szymon Senyk, T. Kałdoński","doi":"10.5604/01.3001.0016.1041","DOIUrl":"https://doi.org/10.5604/01.3001.0016.1041","url":null,"abstract":"The article discusses the problem of using hexagonal boron nitride (h-BN) as a grease additive. The literature\u0000on the subject was analysed in terms of greases into which hexagonal boron nitride was added. Particular\u0000attention was paid to the nano h-BN, due to the topicality of this topic and the potential of nano-additives to\u0000lubricants noted in published scientific studies. It was found that in order to indicate the regularities describing\u0000the tribological interaction of hexagonal boron nitride, detailed studies and an analysis of its properties are\u0000required. The important factors determining the application of this additive include particle size distribution,\u0000morphology, specific surface area, and porosity. The mentioned properties were determined for four samples\u0000of hexagonal boron nitride, which were also objects of tribological experiments. For this purpose, a scanning\u0000electron microscope (SEM) and XRD method were used, and low-temperature adsorption isotherms were\u0000determined. The research on the influence of h-BN on the lubricity properties of lithium grease was carried\u0000out on a four-ball apparatus. Possible mechanisms of interaction of different types of h-BN in the friction\u0000zone were identified using the information collected on their important properties. Based on the results of the\u0000research, it was found that the use of nano h-BN in the discussed context seems promising. Article published\u0000in connection with the Autumn Tribological School.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78344097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PHYSICOCHEMICAL ASPECTS OF THE WORK OF PASSENGERCAR BRAKE LININGS. PART II THE EFFECT OF LUBRICATINGADDITIVES 轿车刹车片的理化方面的工作。第二部分润滑添加剂的作用

Tribologia: Finnish Journal of Tribology Pub Date : 2022-11-30 DOI: 10.5604/01.3001.0016.1043

M. Szlichting, D. Bieliński, J. Rogowski, M. Kozanecki, T. Dąbrowski

{"title":"PHYSICOCHEMICAL ASPECTS OF THE WORK OF PASSENGER\u0000CAR BRAKE LININGS. PART II THE EFFECT OF LUBRICATING\u0000ADDITIVES","authors":"M. Szlichting, D. Bieliński, J. Rogowski, M. Kozanecki, T. Dąbrowski","doi":"10.5604/01.3001.0016.1043","DOIUrl":"https://doi.org/10.5604/01.3001.0016.1043","url":null,"abstract":"The paper presents the influence of various systems of lubricating additives which determine the performance\u0000of the friction materials of brake linings. The base hybrid friction material formulation was modified with\u0000various types of lubricating additives. These additives are divided into groups containing commonly used\u0000lubricating materials: carbons and sulphides, compounded in various proportions, influencing the formation\u0000and structure of the so-called third body layer (TBL) on the surface of the brake disc because of braking.\u0000Raman Spectroscopy (RS), time of flight Secondary Ion Mass Spectroscopy (ToF-SIMS) and high-resolution\u0000scanning electron microscopy with an X-ray analyser (SEM-EDS) equipped with a focus ion beam (FIB)\u0000were used for chemical and morphological analysis of the surface layer of brake disc after breaking tests.\u0000The results of the physicochemical analysis of TBL were correlated with the results of tribological tests\u0000(according to the SAE-J2522 procedure, commonly known as AK-Master) on a brake dynamometer adapted\u0000to the measurements of acoustic signals (NVH – noise, vibration, and harshness). The obtained results confirm\u0000the important role played by the so-called third body layer, formed on the surface of the brake disc for safety\u0000(COF), durability (wear of friction elements) and the acoustic spectrum accompanying braking.\u0000\u0000","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"104 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79009904","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

LUBRICATING PROPERTIES OF POLYESTER OILS AND R404AREFRIGERANT MIXTURES UNDER STARVED LUBRICATIONCONDITIONS 饥渴润滑条件下聚酯油和r404制冷剂混合物的润滑性能

Tribologia: Finnish Journal of Tribology Pub Date : 2022-11-30 DOI: 10.5604/01.3001.0016.1019

Kasper Górny, A. Stachowiak, Przemysław Tyczewski, W. Zwierzycki

引用次数: 0

MOS2/WS2/FINELPN COMPOSITE LAYERS – A NEW APPROACHTO LOW FRICTIONAL COATINGS FOR PISTON RINGS Mos2 / ws2 / finelpn复合层——活塞环低摩擦涂层的新方法

Tribologia: Finnish Journal of Tribology Pub Date : 2022-11-30 DOI: 10.5604/01.3001.0016.1024

P. Kula, R. Pietrasik, S. Pawęta, J. Komorowski

引用次数: 2