Recycling of Stainless Steel Grinding Sludge

2007 ◽  
Vol 534-536 ◽  
pp. 997-1000 ◽  
Author(s):  
Toru Shimizu ◽  
Kotaro Hanada ◽  
Satoru Adachi ◽  
Masahito Katoh ◽  
Kanichi Hatsukano ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Metal Powder ◽  
Metal Foam ◽  
Raw Material ◽  
Grinding Process ◽  
Steel Foam

Stainless steel sludge is generated as a waste in the grinding process, and the possibility of recycling stainless steel is considered here. Generally, stainless steel grinding sludge ranging about 10,000 are generated per a year in Japan, and most of it is discarded or re-melted with scrap steel. In this study, we considered the possibility of using the stainless steel sludge as metal powder for MIM or raw material for metal foam. For the MIM process, the metal powder will need some improvement, and flotation and spheroidizing processes of the sludge are necessary. For fabrication of the metal foam, untreated sludge can be used, and steel foam about 90% porosity is produced.

Metal Foam Production Process Using Hydro-Gel and its Improvement

2007 ◽  
Vol 539-543 ◽  
pp. 1845-1850 ◽  
Author(s):  
Toru Shimizu ◽  
Kunio Matsuzaki
Keyword(s):  
Stainless Steel ◽  
Production Process ◽  
Cell Size ◽  
Metal Foam ◽  
Heating Temperature ◽  
Foaming Agent ◽  
Steel Foam ◽  
Foam Production

Already, we are developing the process to produce stainless steel foam over 97% porosity using hydro-gel binder. However, this process is very sensitive process, and foaming condition is affected by the slight deference of heating temperature. Therefore, we tried to improve the process by changing the foaming agent and foaming conditions. By the improvement of the process, the foaming operation becomes stable and finer cell size stainless steel foam can be obtained.

Effect of Pressure on the Gas Atomizer to Fabricate Stainless Steel Metal Powder

2020 ◽  
Vol 833 ◽  
pp. 54-58 ◽  
Author(s):  
Sugeng Supriadi ◽  
Tsaome Indah Susimah ◽  
Muhammad Haekal Sena Akbar ◽  
Bambang Suharno ◽  
Ario Sunar Baskoro ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Metal Powder ◽  
Large Scale ◽  
Spherical Shape ◽  
Free Fall ◽  
Gas Pressure ◽  
Raw Material ◽  
Application Process ◽  
Electric Induction ◽  
Stainless Steel 304

Metal powder is used in the Powder Metallurgy (PM) application process. Most of the metals used in the PM are stainless steel made by the gas atomization process. This study uses the free fall gas atomizer. The material was used to produce the metal powder from various forms of stainless steel 304 raw material, which is melted in an electric induction furnace. This method is very practical to be applied in the large-scale metal processing industries. While the gas pressure variation results show that metal powder with a smaller size will be produced more using high gas pressure. The free fall gas atomizer has successfully produced stainless steel 304 metal powder with the size <40 μm and have a spherical shape. The well-rounded sphericity for 8 bar pressure, 10 bar pressure, and 12 bar pressure are 61.1%, 41.7%, and 37.5% respectively. It can be concluded that 12 bar pressure produces the smallest size range of powder about <40 µm with the most quantity about 1.11%wt, followed by 10 bar pressure about 0.41%wt and 8 bar pressure about 0.07%wt.

Pyrolysis of unsubstituted bicyclic hydrocarbons and gas oil

1982 ◽  
Vol 47 (7) ◽  
pp. 1838-1847 ◽  
Author(s):  
Martin Bajus ◽  
Jozef Baxa
Keyword(s):  
Stainless Steel ◽  
Elemental Sulphur ◽  
Raw Material ◽  
Gas Oil ◽  
Mass Ratio ◽  
Reaction Products ◽  
Pyrolysis Products ◽  
Reactor Material ◽  
Tubular Reactors ◽  
Stainless Steel Reactor

Pyrolysis of tetraline, decaline, 1,1'-bicyclohexane, cyclohexylbenzene and gas oil was studied in stainless steel and quartz flow tubular reactors at 780 and 800 °C, residence time 0.08 to 0.5 s and at the mass ratio of steam to the raw material changing from 0.5 to 1.5. The effect of reaction temperature, the mass ratio of steam to the raw material, reactor material and of the added elemental sulphur on the yields of individual reaction products is reported. Of bicyclic hydrocarbons, condensed hydrocarbons are more stable than those with noncondensed rings, cyclanoaromates being more stable than bicyclanes. Pyrolysis of gas oil in the stainless steel reactor yields greater amounts of ethylene, propylene, butadiene and smaller amounts of methane and ethane, compared to the pyrolysis carried out under identical conditions in the quartz reactor. Elemental sulphur increases the conversion of gas oil into gaseous pyrolysis products.

Preparation, characterization and evaluation of a novel CMC/Chitosan-α-Fe2O3 nanoparticles-coated 17–4 PH stainless-steel foam

2021 ◽  
Author(s):  
Selcan Karakuş ◽  
İnci Albayrak ◽  
Nuray Beköz Üllen ◽  
Mert Akin Insel ◽  
Ayben Kilislioğlu
Keyword(s):  
Stainless Steel ◽  
Fe2o3 Nanoparticles ◽  
Steel Foam

Preparation of ceramic tiles with black pigments using stainless steel plant dust as a raw material

2014 ◽  
Vol 40 (7) ◽  
pp. 9693-9700 ◽  
Author(s):  
Xiang Zhang ◽  
Guojun Ma ◽  
Yibiao Jin ◽  
Puhong Cheng
Keyword(s):  
Stainless Steel ◽  
Steel Plant ◽  
Raw Material ◽  
Ceramic Tiles

Fabrication of Stainless Steel Foams Using Polymeric Sponge Impregnation Technology

2014 ◽  
Vol 1035 ◽  
pp. 219-224 ◽  
Author(s):  
Hui Wang ◽  
Xiang Yang Zhou ◽  
Bo Long
Keyword(s):  
Stainless Steel ◽  
Apparent Density ◽  
Open Porosity ◽  
316L Stainless Steel ◽  
Bending Strength ◽  
Sintering Temperature ◽  
Foam Sample ◽  
Cell Network ◽  
Mass Fractions ◽  
Steel Foam

316L stainless steel foams (SSFs) are fabricated successfully by polymeric sponge impregnation technology. The effects of mass fractions of PVA and powder on LOAD in impregnated sponge samples are investigated, and the effects of sintering temperature on apparent density, open porosity and bending strength of SSFs samples are also discussed. The experimental results show that the impregnated sponge samples may hold excellent 3D open-cell network structure and uniform muscles when the mass fractions of PVA and powder in slurry are kept in 9-13 % and 52-75% respectively; with rising the sintering temperature, the apparent density and bending strength of SSFs gradually increases, the open porosity reduces. After the temperature exceeds 1260°C, the bending strength reduces oppositely. A stainless steel foam sample with open porosity of 81.4% and bending strength of about 56.8 Mpa can be obtained after sintering at 1260 °Cfor 30min.

Effects of Sintering Temperature on the Properties of Stainless Steel Foam

2015 ◽  
Vol 1087 ◽  
pp. 232-235
Author(s):  
Fazimah Mat Noor ◽  
N.I. Mad Rosip ◽  
Khairur Rijal Jamaludin ◽  
Sufizar Ahmad
Keyword(s):  
Stainless Steel ◽  
Average Pore Size ◽  
Vacuum Furnace ◽  
Stainless Steel 316L ◽  
Average Pore ◽  
X Ray ◽  
Replication Method ◽  
Pore Dimension ◽  
Steel Foam ◽  
Highly Porous

Foam replication method is capable of producing foams with a highly porous structure with adjustable pore dimension, shape and size. In this work, this method has been used to prepare stainless steel 316L foam and sintered at 1200°C, 1250°C and 1300°C in a vacuum furnace. The microstructure and elemental analysis of the sample were examined using scanning electron microscope (SEM) and Energy Dispersive X–Ray (EDX), while the mechanical properties of the samples was determined by using compression test. It was found that the average pore size was in the range of 330µm-350µm. The yield strength and elastic modulus are in the range of 58-66 GPa and 0.46-0.50GPa respectively.

scholarly journals Mechanical properties of 17-4PH stainless steel foam panels

2007 ◽  
Vol 456 (1-2) ◽  
pp. 305-316 ◽  
Author(s):  
S.V. Raj ◽  
L.J. Ghosn ◽  
B.A. Lerch ◽  
M. Hebsur ◽  
L.M. Cosgriff ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Steel Foam
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