Aisi 1045 Steel
Mostrando 1-12 de 15 artigos, teses e dissertações.
-
1. Changing the characteristics of the nitrided layer using three different plasma configurations
ABSTRACT Direct current (DC) plasma nitriding offers some disadvantages, especially in parts with complex geometries, where the presence of edges is significant, such as gears, molds, and needle punched parts are strongly affected by this effect, leading to irregular formation of nitrided layers and high variation in surface hardness. To solve these problems
Matéria (Rio J.). Publicado em: 10/06/2019
-
2. Study on friction and wear behavior of SAE 1045 steel, reinforced nylon 6.6 and NBR rubber used in clutch disks
The friction and wear properties of AISI 1045 steel, nylon 6.6 composites with different types and percentages of reinforcement and a nitrile rubber, Alpha 66, were submitted to sliding wear tests. The five types of nylon 6.6 composites tested generated matching, low values for the coefficient of friction. This may be due to the greater influence of the nylo
Mat. Res.. Publicado em: 2014-12
-
3. Comparison between Neutron Diffraction measurements and numerical simulation of residual stresses of a Wire-Drawing process
In this work, a drawing processed was simulated to calculate forces and the resulting residual stresses in the material. The calculated residual stresses were compared with experimentally measured residual stresses by the Neutron Diffraction Method. The modeled process was the Wire Drawing. The necessary parameters to model the process were taken from an ind
Mat. Res.. Publicado em: 08/02/2013
-
4. Machinability study of steels in precision orthogonal cutting
The miniaturization of components and systems is advancing steadily in many areas of engineering. Consequently, micro-machining is becoming an important manufacture technology due to the increasing demand for miniaturized products in recent years. Precision machining aims the production of advanced components with high dimensional accuracy and acceptable sur
Materials Research. Publicado em: 03/07/2012
-
5. Analysis by design of experiments of distortion potentials in drawn and induction hardened wire
In this investigation a DoE (Design of Experiments) analysis of distortion for a typical manufacturing process of pre-straightened, cold drawn and induction hardened AISI 1045 cylindrical steel bars was carried out. A careful characterization of the material, including residual stress states and geometrical changes, was done for the different manufacturing s
Materials Research. Publicado em: 24/02/2012
-
6. Análise da influência de parâmetros do processo de trefilação de barras cilíndricas de aço AISI 1045 via simulação numérica computacional / Title: parameters analysis of the drawing of AISI 1045 steel rods via FEM
This paper aims to analyze the drawing process using simulation and evaluate the influence of process variables such as lubricant (friction coefficient) and angle of die as well as verify the effectiveness of simulation to preview the drawing force, temperature and residual stresses. Experimental work was carried out involving the determination of friction c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
-
7. Efeito do tamanho do abrasivo no desgaste de metais. / The effect of abrasive size on the wear resistance of metallic materials.
In this research, the effect of abrasive size on the wear resistance of five metallic materials was investigated. Abrasive wear tests using a pin test on alumina paper were carried out using abrasive sizes between 16 µm and 192 µm. The wear surface of the specimens was examined by scanning electron microscopy for identifying the wear micromechanism and the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/06/2010
-
8. Study on the wear behavior of uncoated and thin film coated tools used in cold forming operations. / Estudo do desgaste de ferramentas com e sem revestimentos de filmes finos utilizadas em operações de conformação a frio.
This work is devoted to the study of wear mechanisms in cold forming tools, such as punches and dies. The text begins with a discussion on the galling phenomenon, which is the main wear mechanism that takes place in cold forming operations. A brief analysis of the tribological behavior of punches that have operated in industrial conditions is then presented.
Publicado em: 2009
-
9. Avaliação numérico-experimental da fratura dúctil em processos predominantementetrativos e compressivos
Failure prediction in fracture-free materials under a general stress-strain path has posed a great challenge to researchers. Despite the fact that numerical assessment of ductile failure under tensile stress states has been reasonably well described in the literature, a definition of a failure criterion or modelling approach capable to successfully predict f
Publicado em: 2006
-
10. Mathematical modeling and experimental analysis of the hardened zone in laser treatment of a 1045 AISI steel
The aim of this work is to develop a mathematical model to predict the depth of laser treated zone in the LTH process. The Fourier equation of heat conduction is solved by using the Finite Difference Method in cylindrical coordinates in order to study the temperature distribution produced in a workpiece and hence to obtain the depth to which hardening occurs
Materials Research. Publicado em: 2004-06
-
11. Modelo de desgaste oxidativo baseado em parâmetros termodinâmicos. / Oxidational wear model based on thermidynamic parameters.
During sliding wear, heat generated friction occurs, which favors oxidation occurrence on the contacting surfaces of metallic materials. The oxidation phenomenon can result in wear rate attenuation due to transitions in the contact feature from metal-metal to either metal-oxide or oxide-oxide. This work aimed to develop a theoretical modeling on oxidational
Publicado em: 2004
-
12. Deposição de revestimentos compositos metal-ceramico WC-Co por fusão a laser : avaliação da resistencia ao desgaste e a corrosão
In the present work the laser c1adding process was used to produce WC-Co composite coatings with varied fractions of WC. The AISI 1045 steel was used as substrate. The coatings were produced afier severa! tests, which have permitted the determination of optimum operational parameters. The characterization ofthe coatings was performed by optic microscopy, sca
Publicado em: 2004