Tribologia: Finnish Journal of Tribology最新文献_第2页

EFFECT OF ROLL FORCE DECREASE IN HOT ROLLINGOF DP600 STEEL GRADE BY USE OF ROLL GAP LUBRICATION 轧辊间隙润滑对dp600钢热轧轧辊力降低的影响

Tribologia: Finnish Journal of Tribology Pub Date : 2023-06-30 DOI: 10.5604/01.3001.0053.6121

Tomasz Kaźmierski, J. Krawczyk

{"title":"EFFECT OF ROLL FORCE DECREASE IN HOT ROLLINGOF DP600 STEEL GRADE BY USE OF ROLL GAP LUBRICATION","authors":"Tomasz Kaźmierski, J. Krawczyk","doi":"10.5604/01.3001.0053.6121","DOIUrl":"https://doi.org/10.5604/01.3001.0053.6121","url":null,"abstract":"The force required for plastic deformation of steel in the hot rolling process is an important parameter which impacts roll wear, strip steering in finishing stands, shape and profile of the rolled strip and energy consumption. Theoretically, the roll force could be effectively decreased by rolling strips with higher temperatures and a lower speed or by reducing the strips input thickness. Due to the required mechanical properties of hot rolled strips as well as the continuous drive toward increased rolling line productivity and cost optimisation, in most cases, it is impossible to lower roll force by changing these two parameters. Roll gap lubrication effectively decreases the roll force, and lowering the friction between the work roll's surface and rolled material reduces roll force by 5% to 20%. Lower roll force brings obvious results in lower energy consumption, but even more important are benefits coming from lower work roll wear and improved strip shape and profile. These issues are particularly important during the hot rolling of dual-phase steel, which due to relatively low final rolling temperature (FRT), requires a higher roll force resulting from increased steel yield stress at lower temperatures.","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"57 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88613610","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

EFFECT OF HEXAGONAL BORON NITRIDE WITH DIFFERENTPARTICLE GRANULATION ON THE LUBRICATION PROPERTIESOF MINERAL OIL WITH AN ADDITION OF SURFACTANTS 不同颗粒造粒的六方氮化硼对添加表面活性剂矿物油润滑性能的影响

Tribologia: Finnish Journal of Tribology Pub Date : 2023-06-30 DOI: 10.5604/01.3001.0053.6119

A. Chodkiewicz, T. Kałdoński

{"title":"EFFECT OF HEXAGONAL BORON NITRIDE WITH DIFFERENTPARTICLE GRANULATION ON THE LUBRICATION PROPERTIESOF MINERAL OIL WITH AN ADDITION OF SURFACTANTS","authors":"A. Chodkiewicz, T. Kałdoński","doi":"10.5604/01.3001.0053.6119","DOIUrl":"https://doi.org/10.5604/01.3001.0053.6119","url":null,"abstract":"This paper presents the results of tribological tests of lubricating compositions containing SN150 mineral oilas a base, an additive of solid lubricant in the form of hexagonal boron nitrides (h-BN) of various particlesizes (nano- and micro-) and surfactants: succinic acid imide and sodium di-2-ethylhexyl sulphosuccinate.Particular attention was paid to analysing the properties of hexagonal boron nitrides in the context of theireffect on the tribological properties of the friction node under study. The effects of h-BN particle size, shape,specific surface area and porosity were considered. In addition, tests were carried out to check the surfactants'effect on the tested oil's hexagonal boron nitride sedimentation process. These tests confirmed the positiveeffect of succinic acid imide on maintaining a stable dispersion of h-BN particles in SN-150 mineral oil.Tribological tests were performed on a T-02 tribotester based on the PN-EN ISO 20623:2018-02 standard.The positive effect of hexagonal boron nitride on the lubricating properties of mixtures with SN150 mineraloil was established. In addition, hexagonal boron nitride, with a smaller particle size and a more developedporous structure, had a more favourable effect on improving the lubricity properties evaluated on the T-02tribotester.","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"112 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91357136","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

ABRASION RESISTANCE TEST OF THE MODIFIED Ti13Nb13ZrALLOY SURFACE 改性Ti13Nb13ZrALLOY表面的耐磨性试验

Tribologia: Finnish Journal of Tribology Pub Date : 2023-06-30 DOI: 10.5604/01.3001.0053.6124

Julia Lisoń-Kubica, A. Taratuta, M. Antonowicz, M. Basiaga

引用次数: 0

MECHANICAL PROPERTIES OF POLYMER COATINGSCONTAINING HAP AND ACTIVE SUBSTANCE ON A METALSUBSTRATEWASNOCI 研究了金属基上含hap和活性物质的聚合物涂层的力学性能

Tribologia: Finnish Journal of Tribology Pub Date : 2023-06-30 DOI: 10.5604/01.3001.0053.6120

Karolina Goldsztajn, Julia Lisoń-Kubica, J. Jaworska, K. Jelonek, W. Kajzer, J. Szewczenko

{"title":"MECHANICAL PROPERTIES OF POLYMER COATINGSCONTAINING HAP AND ACTIVE SUBSTANCE ON A METALSUBSTRATEWASNOCI","authors":"Karolina Goldsztajn, Julia Lisoń-Kubica, J. Jaworska, K. Jelonek, W. Kajzer, J. Szewczenko","doi":"10.5604/01.3001.0053.6120","DOIUrl":"https://doi.org/10.5604/01.3001.0053.6120","url":null,"abstract":"Titanium alloys are currently widely used in implantation, especially in orthopaedics. However, undesirablereactions caused by aluminium and vanadium ions released from the surface of the most commonly used alloys,Ti6Al4V and Ti6Al7Nb, result in the need to modify the surface of the material to improve biocompatibility.Among the available modification methods, one can mention the application of biodegradable polymercoatings, which, apart from improving biocompatibility by limiting the penetration of alloying element ionsinto the tissue environment, can also be a matrix for the release of mineral (HAp) and active substances. Thepaper attempts to determine the mechanical properties of PLGA polymer coatings containing nanoparticlehydroxyapatite and an active substance (dexamethasone) applied with the ultrasonic spray coating methodon a Ti6Al7Nb alloy substrate. The scope of the research included: surface topography testing using an opticalprofilometer, coating adhesion testing to the substrate using the scratch test method and tribological testing(Pin-On-Disc method).","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"50 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88076472","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

STUDY OF THE MECHANICAL AND ANTIBACTERIALPROPERTIES OF SURFACE MODIFIED STEEL FOR MEDICALAPPLICATIONS 医用表面改性钢的力学性能和抗菌性能研究

Tribologia: Finnish Journal of Tribology Pub Date : 2023-06-30 DOI: 10.5604/01.3001.0053.6128

A. Taratuta, J. Lisoń, Alicja Kazik-Kęsik, M. Antonowicz, M. Basiaga

引用次数: 0

THE ASSESSMENT OF THE INFLUENCE OF THE MATERIALUSED ON THE WEAR AND TEAR OF FORKLIFTS AND THEIROPERATIONAL SAFETY 所用材料对叉车磨损及作业安全的影响评估

Tribologia: Finnish Journal of Tribology Pub Date : 2023-03-31 DOI: 10.5604/01.3001.0016.2932

D. Grygier, A. Kęska

引用次数: 0

TRIBOLOGICAL TESTING OF ENVIRONMENTALLY FRIENDLYLUBRICANTS 环保型润滑油的摩擦学试验

Tribologia: Finnish Journal of Tribology Pub Date : 2023-03-31 DOI: 10.5604/01.3001.0016.2933

M. Kowalski, S. Bernat, J. Kowalczyk, Krystyna Radoń-Kobus, P. Grabowski, M. Madej

引用次数: 0

ANALYSIS OF FRICTION FORCES IN THE PROCESSOF FORMING MOULDING MASS 模体成形过程中的摩擦力分析

Tribologia: Finnish Journal of Tribology Pub Date : 2023-03-31 DOI: 10.5604/01.3001.0016.2934

Marek Szewczyk, Marek Szwajka

引用次数: 0

RESEARCH ON HYDRODYNAMIC PEEK JOURNAL BEARINGSLUBRICATED WITH WATER AND OIL 油水润滑滑动轴承的研究

Tribologia: Finnish Journal of Tribology Pub Date : 2023-03-31 DOI: 10.5604/01.3001.0016.2938

Tomasz Żochowski, A. Olszewski, M. Wasilczuk

引用次数: 0

DETERMINATION OF FERROFLUID MAGNETISATION CURVEBASED ON THE MEASUREMENT OF PARTICLE DISTRIBUTIONOBTAINED BY THE DLS METHOD 基于DLS法测量颗粒分布的铁磁流体磁化曲线的确定

Tribologia: Finnish Journal of Tribology Pub Date : 2023-03-31 DOI: 10.5604/01.3001.0016.2935

Y. Tarasevych, M. Szczęch

{"title":"DETERMINATION OF FERROFLUID MAGNETISATION CURVEBASED ON THE MEASUREMENT OF PARTICLE DISTRIBUTIONOBTAINED BY THE DLS METHOD","authors":"Y. Tarasevych, M. Szczęch","doi":"10.5604/01.3001.0016.2935","DOIUrl":"https://doi.org/10.5604/01.3001.0016.2935","url":null,"abstract":"Ferrofluid is a colloid with particles of about 10nm that show magnetic properties. These fluids are used in avariety of applications. Their application is affected by the type of carrier base liquid, the magnetic propertiesof the particle's material, and their size and shape. In practical applications, the magnetisation curve andthe initial magnetic susceptibility are the most important characteristics of any ferrofluid. There are manymethods for determining magnetic characteristics, e.g., using magnetometers. The magnetisation curve canalso be determined on the particle distribution obtained using a transmission electron microscope (TEM).However, the cost of these devices and tests is relatively high. This paper describes a method for determiningthe magnetisation curve based on particle size measurements using the dynamic light scattering (DLS)method. Also, it is necessary to know the saturation magnetisation of the ferrofluid. The obtained magneticcharacteristics were compared with magnetisation curves described in other publications. The purpose ofthis paper is to present the method and determine the influence of various particle distribution parameterson ferrofluid characteristics. The advantage of the method is that a small volume of ferrofluid is requiredin measurements using the DLS method. The measurement can be performed quickly, and the result can beused to estimate the magnetic properties of ferrofluids quickly. These characteristics can be used in analyses(mathematical or numerical calculations) of different devices such as magnetic seals, magnetic couplings,magnetic dampers, etc.","PeriodicalId":35004,"journal":{"name":"Tribologia: Finnish Journal of Tribology","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84597786","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