Effects of the surface roughness of rolls on the powder rolling process

1974 ◽  
Vol 13 (7) ◽  
pp. 534-538
Author(s):  
E. B. Vernik ◽  
O. A. Katrus
Keyword(s):  
Surface Roughness ◽  
Rolling Process ◽  
Powder Rolling

Densification Behavior of Titanium in Direct Powder Rolling Process

2012 ◽  
Vol 36 (10) ◽  
pp. 1255-1260 ◽  
Author(s):  
Dong-Hwan Kang ◽  
Jae-Keun Hong ◽  
Nho-Kwang Park ◽  
Tae-Won Kim
Keyword(s):  
Rolling Process ◽  
Powder Rolling ◽  
Densification Behavior

scholarly journals Study of Wire Deformation Characterization and Size Effects during the Micro-Flat-Rolling Process

Metals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 405 ◽  
Author(s):  
Haibo Xie ◽  
Ken-ichi Manabe ◽  
Zhengyi Jiang
Keyword(s):  
Surface Roughness ◽  
Contact Area ◽  
Rolling Process ◽  
Lateral Spread ◽  
Curvature Radius ◽  
Element Simulation ◽  
Flat Rolling ◽  
Set Up ◽  
Rolling Deformation

A comprehensive research on the flat rolling deformation characterization of microwire has been conducted systematically through finite element simulation and testified by the results from the experimental analysis. The obtained results are compared in terms of lateral spread, geometrical characteristic, contact area width and surface roughness considering the effects of pass reduction and initial wire diameter. The size effect has been identified and surface layer modeling has been set up based on surface grain share and grain size distribution. The numerical method combined with varied flow stress has been verified by experimental value with a maximum difference of 3.7% for the 1.5 mm wire. With the increase of the height reduction, the curvature radius is decreased while the lateral spread and contact area width are increased. Surface roughness evolution in the range of 0.52–0.85 µm for the rolled wire has also been investigated.

Mechanical Properties of PM CNT-Dispersed Cu Composite

2017 ◽  
Vol 737 ◽  
pp. 320-325 ◽  
Author(s):  
Hisashi Imai ◽  
Katsuyoshi Kondoh ◽  
Junko Umeda
Keyword(s):  
Mechanical Properties ◽  
Surface Area ◽  
Composite Powder ◽  
Pure Copper ◽  
Surfactant Solution ◽  
Rolling Process ◽  
Powder Rolling ◽  
Zwitterionic Surfactant ◽  
Powder Surface ◽  
Strengthening Factor

Microstructural and mechanical properties of powder metallurgy (PM) with carbon nanotube (CNTs) dispersed copper (Cu) composites were investigated in detail. Pure copper powder was coated with un-bundled CNTs by using the zwitterionic surfactant solution containing CNTs. The powder rolling process was applied to increase the powder surface area to be coated with CNTs. The total rolling reduction of Cu-CNT composite powder by 5 steps rolling was about 75%. With increasing the number of rolling steps, the content of CNTs coated on the Cu powder surface increased because of the increment of the flat surface area of flaky Cu rolled powder. As a result, the CNT content was 0.67mass% after 5 steps powder rolling. It was about twice as that of as-coated Cu-CNT composite powder without rolling. The grain size of PM extruded Cu-CNT composite was about one fifth of that of the extruded monolithic Cu material without CNT. Yield stress of the extruded Cu-CNT composite via the rolling process was 192 MPa, which is about twice that of the extruded monolithic Cu material (88 MPa). CNTs distributed at primary particle boundaries were effective to prevent the grain coarsening by their pinning effects, and this grain refinement was the main strengthening factor of the Cu-CNT composite via rolling process.

Aspects of Burnishing Rolling Process of the Surface Prepared in Different Previous Treatments

2016 ◽  
Vol 862 ◽  
pp. 78-85
Author(s):  
Agnieszka Kułakowska ◽  
Marcin Kulakowski ◽  
Łukasz Bohdal ◽  
Radoslaw Patyk
Keyword(s):  
Surface Roughness ◽  
Surface Layer ◽  
Product Development ◽  
Previous Treatment ◽  
Rolling Process ◽  
The State ◽  
Surface Microstructure ◽  
Bearing Surface ◽  
Experimental Researches

The aim of this article is to demonstrate the possibility of using burnishing rolling process as the technology of product development. The experimental researches were carried out, showing the ability to form the surface layer of the product with the desired properties. First, during different previous treatment the surfaces of the samples were prepared. Then these surfaces were burnished with constant burnishing parameters. The influence of different previous treatment on the state of the surface layer parameters are shown. Among the examined aspects is considered: surface roughness, nanoroughness, material bearing, surface microstructure, metallographic.

A new lead alloy current-collector manufactured by a powder rolling process and its corrosion behavior under lead-acid battery conditions

2008 ◽  
Vol 185 (1) ◽  
pp. 559-565 ◽  
Author(s):  
Masanori Sakai ◽  
Yasuo Kondo ◽  
Satoshi Minoura ◽  
Takeo Sakamoto ◽  
Tokiyoshi Hirasawa
Keyword(s):  
Corrosion Behavior ◽  
Current Collector ◽  
Rolling Process ◽  
Powder Rolling ◽  
Lead Alloy ◽  
Lead Acid Battery ◽  
Lead Acid

Control of the powder rolling process

1983 ◽  
Vol 22 (3) ◽  
pp. 163-165
Author(s):  
E. B. Lozhechnikov
Keyword(s):  
Rolling Process ◽  
Powder Rolling

Investigation of the bonding strength of the stainless steel 316L/polyurethane/stainless steel 316L tri-layer composite produced by the warm rolling process

2018 ◽  
Vol 22 (3) ◽  
pp. 728-742
Author(s):  
Mehran Kamali Andani ◽  
Habib Daneshmanesh ◽  
Seyed Ahmad Jenabali Jahromi
Keyword(s):  
Surface Roughness ◽  
Stainless Steel ◽  
Bonding Strength ◽  
Rolling Process ◽  
Warm Rolling ◽  
Rolling Speed ◽  
Thickness Reduction ◽  
Stainless Steel 316L ◽  
Layer Composite ◽  
Preheating Temperature

In this study, a metal/polymer tri-layer composite was produced by direct adhesion (without adhesive), and mechanical locks were created using the warm rolling process. The effect of the process parameters including preheating temperature, rolling speed, thickness reduction, surface roughness, and the orientation of the surface scratches on the bond strength between layers was investigated. The results indicated that the suitable polymer fluidity and penetration, to provide stronger mechanical locks and higher bond strengths, could be achieved at an optimum preheating temperature and a rolling speed of 240°C and 36 r/min, respectively. In addition, the most appropriate surface pretreatment was obtained in the wire brush in the rolling direction mode with the surface roughness of 0.65 µm, so that the failure mechanism in this case was cohesive and the optimum thickness reduction was achieved at 40%. Furthermore, the mechanical properties of the sandwich sheet with highest bonding strength were evaluated.

Mathematical modeling of the elastic rolling process and optimization of its parameters to reduce the roughness of the processed surface of high-precision non-rigid thin-walled parts

2020 ◽  
pp. 56-61
Author(s):  
A.M. Gafarov ◽  
H.V. Gafarzade
Keyword(s):  
Mathematical Modeling ◽  
Surface Roughness ◽  
Technological Process ◽  
High Precision ◽  
Roughness Parameter ◽  
Rolling Process ◽  
Surface Roughness Parameter ◽  
Modeling And Optimization ◽  
Rolling Surface ◽  
Thin Walled

The possibilities of a new technological process — elastic rolling are considered. Modeling and optimization of the process were performed to ensure the minimum surface roughness of the treated surface. Keywords elastic rolling, surface roughness, parameter, modeling, optimization, part. [email protected]

The Direct Powder-Rolling Process for Producing Thin Metal Strip

JOM ◽  
1983 ◽  
Vol 35 (1) ◽  
pp. 34-39 ◽  
Author(s):  
David H. Ro ◽  
Milton W. Toaz ◽  
Vladimir S. Moxson
Keyword(s):  
Rolling Process ◽  
Metal Strip ◽  
Thin Metal ◽  
Powder Rolling
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