Improvement of Surface Texture of Stainless Steel by Utilizing Dry Blasting - 3rd Report: Effect of Blasted Texture on Adhesion of Plating -

2007 ◽  
Vol 329 ◽  
pp. 353-358 ◽  
Author(s):  
Kazushi Minaki ◽  
Koichi Kitajima ◽  
Yu Nakahira ◽  
K. Minaki ◽  
Moriyasu Izawa ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Electric Charge ◽  
Surface Texture ◽  
Liquid Waste ◽  
Scratch Test ◽  
Water Jet ◽  
The Other ◽  
Abrasive Grain ◽  
Limited Basis ◽  
Near Future

Recently, wet blasting is generally used such as liquid honing and water jet machining in surface before plating of stainless steel. The outstanding feature of wet blasting is to prevent generation of static electric charge, to use micro abrasive grain, and to have cushioning for workpiece. On the other hand, the disadvantage of wet blasting is to generate corrosion of equipment and liquid waste under processing. Moreover, the using abrasive grain is available on a limited basis. In particular, improvement disposal of liquid waste under processing is crucial in the near future. This paper makes proposal for improvement of surface texture by utilizing dry blasting, and it conducts improvement of surface texture about martensite stainless steel (SUS420J2 In JIS), which is used in material for scale. In the previous report, it has been cleared that relationship between surface texture and wettability. In this report, adhesion of plating was measured by scratch test. As a result, it was cleared that availability of adhesion evaluation by utilizing wettability.

Improvement of Surface Texture of Stainless Steel by Utilizing Dry Blasting - 2nd Report: Effect of Blasting Conditions on Wettability -

2005 ◽  
Vol 291-292 ◽  
pp. 265-270 ◽  
Author(s):  
Kazushi Minaki ◽  
Koichi Kitajima ◽  
K. Minaki ◽  
Moriyasu Izawa ◽  
Katsuji Tosha
Keyword(s):  
Stainless Steel ◽  
Electric Charge ◽  
Surface Texture ◽  
Liquid Waste ◽  
Water Jet ◽  
The Other ◽  
Abrasive Grain ◽  
Outstanding Feature ◽  
Limited Basis ◽  
Near Future

Recently, wet blasting is generally used such as liquid honing and water jet machining in surface before plating of stainless steel. The outstanding feature of wet blasting is to prevent generation of static electric charge, to use micro abrasive grain, and to have cushioning for workpiece. On the other hand, the disadvantage of wet blasting is to generate corrosion of equipment and liquid waste under processing. Moreover, the using abrasive grain is available on a limited basis. In particular, improvement disposal of liquid waste under processing is crucial in the near future. This paper makes proposal for improvement of surface texture by utilizing dry blasting, and it conducts improvement of surface texture about martensite stainless steel (SUS420J2 In JIS), which is used in material for scale applications. As a result, it is cleared that relationship between surface texture and blasting conditions. Furthermore, based on these results, it reports relationship between surface texture and wettability.

CLC 18.10LN

Alloy Digest ◽  
2006 ◽  
Vol 55 (1) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
High Temperature ◽  
Austenitic Stainless Steel ◽  
Stainless Steels ◽  
The Other ◽  
Low Carbon ◽  
Good Corrosion Resistance ◽  
Temperature Performance

Abstract CLC 18.10LN is an austenitic stainless steel with 18% Cr, 9.5% Ni, and 0.14% N to provide good corrosion resistance at strengths above the other low-carbon stainless steels. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and shear strength as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, machining, and joining. Filing Code: SS-950. Producer or source: Industeel USA, LLC.

Divergent theories, converging evidence: The constructional semantics of competing future constructions

2018 ◽  
Vol 6 (1) ◽  
pp. 91-114
Author(s):  
Stefan Hartmann
Keyword(s):  
Experimental Study ◽  
The Other ◽  
Temporal Distance ◽  
Corpus Study ◽  
Distant Future ◽  
Other Hand ◽  
Future Events ◽  
The One ◽  
Near Future ◽  
Lines Of Evidence

Abstract This paper investigates the alternation between two competing German future constructions, the werden + Infinitive construction and the futurate present, from a usage-based perspective. Two lines of evidence are combined: On the one hand, a pilot corpus study indicates that werden + Infinitive is more likely to be used for referring to distant-future events than to near-future events. However, syntactic factors seem to be at least as decisive as semantic ones for speakers’ choice between the two constructions. On the other hand, an experimental study taps into language users’ interpretation of sentences framed in one of the two constructions. It can be shown that the grammatical framing does not significantly affect participants’ estimates of the temporal distance of the events to which the stimuli sentences refer. This suggests that the meaning differences between the two constructions be more nuanced, e.g. pertaining to discourse-pragmatic functions.

scholarly journals IDENTIFIKASI REMBESAN LIMBAH CAIR DENGAN MENGGUNAKAN METODE GEOLISTRIK RESISTIVITAS KONFIGURASI WENNER-SCHLUMBERGER STUDI KASUS TPA SUMOMPO, MANADO

2015 ◽  
Vol 17 (1) ◽  
pp. 167 ◽  
Author(s):  
Friska Datunsolang ◽  
Gerald Tamuntuan ◽  
As'ari As'ari
Keyword(s):  
Resistivity Measurement ◽  
Measurement Data ◽  
Liquid Waste ◽  
The Other ◽  
Contaminated Groundwater ◽  
Low Resistivity ◽  
Porous Region ◽  
Geoelectric Resistivity

IDENTIFIKASI REMBESAN LIMBAH CAIR DENGAN MENGGUNAKAN METODE GEOLISTRIK RESISTIVITAS KONFIGURASI WENNER-SCHLUMBERGER STUDI KASUS TPA SUMOMPO, MANADO ABSTRAK Limbah cair atau lindi yang merupakan hasil degradasi sampah terutama pada lokasi tempat pengelolaan akhir (TPA) dapat meresap ke dalam tanah hingga mencemari sumber air tanah. Karena prosesnya yang terjadi dibawah permukaan maka penyebaran limbah cair relatif sulit untuk dideteksi. Pada penelitian ini telah dilakukan pengukuran geolistrik resistivitas untuk mengidentifikasi adanya rembesan serta penyebaran limbah cair disekitar TPA. Penelitian dilaksanakan disekitar TPA Sumompo, Manado dengan menggunakan konfigurasi Wenner-Schlumberger pada lima lintasan yang masing-masing berjarak 50 m. Data pengukuran selanjutnya diinversi dengan menggunakan software Res2dinv hingga memunculkan profil resistivitas 2D. Hasil analisis menunjukan adanya zona-zona resistivitas rendah yang diperkirakan sebagai daerah porous tersaturasi fluida. Pada lintasan 1, zona tersebut diinterpretasikan sebagai daerah rembesan dan akumulasi lindi, sementara pada lintasan-lintasan yang lain diperkirakan sebagai zona air tanah yang berpotensi tercemar lindi. Kata kunci: Geolistrik,Lindi, TPA Sumompo IDENTIFICATION LIQUID OF WASTE BY USING GEOELECTRIC RESISTIVITY WENNER-SCHLUMBERGER CONFIGURATION THE LANDFILL STUDIES IN SUMOMPO,MANADO ABSTRACT Liquid waste or leachate which is the result of degradation of litter, especially in location where the final manegement of (TPA) can seep into the soil to contaminate groundwater sources. Because the process is going on under the surface of the liquid waste then spread relatively difficult to detect. This research has been conducted geoelectric resistivity measurement to identify the presence of wastewater seepage and spread around the landfill. Research conducted around the landfill Sumompo, Manado using Wenner-Schlumberger configuration on five tracks, each of which is 50 meters away. The next measurement data using software RES2DINV inverted to bring up the 2D profile. The result of the analysis showed the presence of low resistivity zones were estimated as the fluid saturated porous region. On track 1, the zone is interpreted as the accumulation of leachate seepage and region, while at the other trajectories  estimated as zona of potentially contaminated groundwater leachete. Keywords: Geoelectric, Leachate, TPA Sumompo

scholarly journals The Surge of Young Americans from Minority-White Mixed Families & Its Significance for the Future

Daedalus ◽  
2021 ◽  
Vol 150 (2) ◽  
pp. 199-214
Author(s):  
Richard Alba
Keyword(s):  
Demographic Data ◽  
Data System ◽  
First Century ◽  
The Other ◽  
Social Characteristics ◽  
White Americans ◽  
Early Twenty ◽  
American Society ◽  
Near Future ◽  
Demographic Evolution

Abstract The number of youth from mixed majority-minority families, in which one parent is White and the other minority, is surging in the early twenty-first century. This development is challenging both our statistical schemes for measuring ethnicity and race as well as our thinking about their demographic evolution in the near future. This essay summarizes briefly what we know about mixed minority-White Americans and includes data about their growing numbers as well as key social characteristics of children and adults from mixed backgrounds. The essay concludes that this phenomenon highlights weaknesses in our demographic data system as well as in the majority-minority narrative about how American society is changing.

Short Crack Initiation during Low-Cycle Fatigue in SAF 2507 Duplex Stainless Steel

2007 ◽  
Vol 345-346 ◽  
pp. 343-346 ◽  
Author(s):  
M.C. Marinelli ◽  
Suzanne Degallaix ◽  
I. Alvarez-Armas
Keyword(s):  
Stainless Steel ◽  
Duplex Stainless Steel ◽  
Room Temperature ◽  
Low Cycle Fatigue ◽  
Fatigue Cracks ◽  
Surface Strain ◽  
The Other ◽  
Cycle Fatigue ◽  
Cyclic Tests ◽  
Characteristic Microstructure

In this work, the formation of fatigue cracks is considered as a nucleation process due to the development of a characteristic microstructure formed just beneath the specimen surface. Strain controlled cyclic tests were carried out at room temperature at total strain ranges εt = 0.8 and 1.2% in flat specimens of SAF 2507 Duplex Stainless Steel (DSS). The results show that for this DSS, at εt = 0.8%, the correlation between phases (Kurdjumov-Sacks crystallographic relation) plays an important role in the formation of microcracks. On the other hand, at εt = 1.2%, microcracks initiate in the ferritic phase and the K-S relation does not seem to affect the formation of the cracks.

Characterization of Welded Austenitic Stainless Steel Precipitation during Elevated Temperature

2013 ◽  
Vol 446-447 ◽  
pp. 288-290
Author(s):  
Pornpibunsompop Tosapolporn
Keyword(s):  
Stainless Steel ◽  
Elevated Temperature ◽  
Austenitic Stainless Steel ◽  
Weld Metal ◽  
Thermal Effect ◽  
Water Jet ◽  
Mass Change ◽  
Precipitation Temperature

The precipitation characterization of SUS 310S weld metal was investigated by TG/DSC and metallography technique. SMAW was selected for this study and then cut with water jet avoiding thermal effect. Austenitic is the main microstructure of weld metal because of high Creqv./Nieqv. Precipitation launched higher both %mass change and heat consumed as well as the precipitation temperature was around 800 degree Celsius.

Recrystallization Mechanisms in Severely Deformed Dual-Phase Stainless Steel

2010 ◽  
Vol 638-642 ◽  
pp. 1905-1910 ◽  
Author(s):  
Andrey Belyakov ◽  
Rustam Kaibyshev ◽  
Yuuji Kimura ◽  
Kaneaki Tsuzaki
Keyword(s):  
Stainless Steel ◽  
Large Strain ◽  
Austenite Phase ◽  
The Other ◽  
Dual Phase ◽  
Austenite Stainless Steel ◽  
Ultrafine Grained ◽  
Continuous Recrystallization ◽  
Ultrafine Grained Microstructure ◽  
Structural Recrystallization

The structural recrystallization mechanisms operating in an Fe – 27%Cr – 9% Ni dual-phase (ferrite-austenite) stainless steel after large strain processing to total strain of 4.4 were investigated in the temperature range of 400-700oC. The severe deformation resulted in the development of an ultrafine grained microstructure consisting of highly elongated grains/subgrains with transverse dimensions of 160 nm and 130 nm in ferrite and austenite, respectively. The annealing mechanism operating in ferrite phase was considered as continuous recrystallization, which involved recovery leading to the development of essentially polygonized microstructure. On the other hand, the mechanism of discontinuous nucleation took place at an early recrystallization stage in austenite phase.

A Study of Frictional Forces between Orthodontic Brackets and Archwires

1994 ◽  
Vol 21 (4) ◽  
pp. 349-357 ◽  
Author(s):  
Alison Downing ◽  
John McCabe ◽  
Peter Gordon
Keyword(s):  
Stainless Steel ◽  
Frictional Force ◽  
Nickel Titanium ◽  
The Other ◽  
Friction Testing ◽  
Beta Titanium ◽  
Polycrystalline Ceramic ◽  
Ceramic Brackets ◽  
Frictional Forces ◽  
Testing Assembly

The differences in magnitude of static and kinetic frictional forces generated by 0·022 × 0·030-inch stainless steel (Dentaurum®) and polycrystalline ceramic (Transcend®) brackets in combinntion with archwires of different sizes (0·018 inch and 0·019 × 0·025 inch) and materials (stainless steel, nickel-titanium, and beta-titanium) at a constant ligature force were investigated. A friction-testing assembly using the Instron machine was used. In all cases, the static frictional force was greater than the kinetic frictional force. There were no significant differences in the frictional forces generated by stainless steel and polycrystalline ceramic brackets. Beta-titanium archwires produced greater frictinal forces than the other two materials. Increasing the archwire diameter increased the frictional force.

Investigation Into Cavitation Erosion Pits

2009 ◽  
Vol 131 (3) ◽  
Author(s):  
A. Abouel-Kasem ◽  
A. Ezz El-Deen ◽  
K. M. Emara ◽  
S. M. Ahmed
Keyword(s):  
Stainless Steel ◽  
Cavitation Erosion ◽  
Pure Aluminum ◽  
The Other ◽  
304 Stainless Steel ◽  
Testing Time ◽  
Limited Effect ◽  
Fatigue Process

Cavitation erosion pits and their effects on erosion progression were investigated in detail for SUS 304 stainless steel, α+β brass (60/40), and pure aluminum (Al-99.999 and Al-99.92) by means of vibratory erosion. Two kinds of erosion pits were found on the specimen surfaces, one by microjet impact and the other by shockwave blow. Systematic observations of the feature of microjet-pits with the testing time showed that the sizes and shapes of microjet-pits did not change at all and such pits scarcely played an important role in developing the erosion. Moreover, the feature morphology of eroded surfaces, and dislodged particles and their large sizes revealed that microjet-pits had a limited effect on erosion and that the predominant failure was a fatigue process.

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