13 chromium stainless steel welded joints in flow line applications
Microbiologically influenced corrosion (MIC) of stainless steel 304 and copper nickel alloy (70 30) and its inhibition in seawater environments
... and steel, Stainless steel, Zinc, Aluminum, Copper alloys Utilize hydrogen in reducing SO42- to S2and H2S; promote the formation of sulfide films 10-40 (some 4575) Anaerobic Iron and steel, Stainless ... most prevalent in industrial water and seawater environments, have been found to be involved in the 17 corrosion of mild steel, stainless steel and aluminum alloys in numerous marine habitats (Morales ... coatings and CP being applied in special cases Table 2.2 Prevention of corrosion in industrial facilities Facility Upstream oil and gas Well casings Piping Tanks, batteries External pipelines Internal...
Ngày tải lên: 12/09/2015, 08:20
IIW RECOMMENDATIONS ON METHODS FOR IMPROVING THE FATIGUE STRENGTH OF WELDED JOINTS pot
... Dragen A, Slind T and Orjasaeter O (1987): Prediction of the improvement in fatigue life of welded joints due to grinding, TIG dressing, weld shape control and shot peening In: Steel in Marine Structures ... (1987): The influence of cathodic protection and post weld improvement on the fatigue resistance of steel welded joints In: Steel in Marine Structures Developments in Marine Technology, Proceedings, ... (1987): Techniques for improving the corrosion fatigue strength of plate welded joints In: Steel in Marine Structures Developments in Marine Technology, Proceedings, 3rd International ECSC Offshore...
Ngày tải lên: 24/03/2014, 02:20
The Mechanical Finishing of Decorative Stainless Steel Surfaces ppt
... MECHANICAL FINISHING OF DECORATIVE STAINLESS STEEL SURFACES Best practice finishing 5.1 Minimising finishing Stainless steel is widely used for decorative applications, requiring surface finishing to ... abrasive heads for stainless steel finishing work The design of the spindle bearings in these machines is inappropriate for the demands of this kind of work For finishing stainless steel fabrications, ... operated finishing equipment needed as larger operating forces may be needed for finishing stainless steel fabrications In addition because the mechanical finishing of stainless steel usually involves...
Ngày tải lên: 01/04/2014, 00:20
analysis and determination of the stress intensity factor of load-carrying cruciform fillet welded joints
... Cruciform Welded Joint loaded cruciform welded joints with different geometries The crack growth was simulated over a suitable step of increment according to welded plate thickness Moreover, in this ... Hübner, P.: A Finite Element Calculation of Stress Intensity Factors of Cruciform and Butt Welded Joints for Some Geometrical Parameters Jordan Journal of Mechanical and Industrial Engineering Vol 3, ... analysis of non- load carrying fillet welded cruciform joints Engineering fracture mechanics Vol 74, No.3 (2007), pp: 399-415 Values of stress intensity factor (KI) in cases of toe and cold-lab...
Ngày tải lên: 24/05/2014, 20:40
Báo cáo lâm nghiệp: "Ground based operation effects on soil disturbance by steel tracked skidder in a steep slope of forest" ppt
... depth increased with an increase in traffic intensity Thus our results are in accordance with findings of many researchers (McNabb et al 2000; Eliasson 2007; Eliasson, Wasterlund 2007) In both ... plot after one, five and nine traffics in each slope class The soil samples were gathered using 10 cm high steel cylinders cm in diameter from 10 cm depth and were put in double plastic, and then ... Percentage of increasing in soil bulk density (g∙cm–3) from post-skidding to pre-skidding for each slope class and effect of slope on soil bulk density SC1 No of passages pre-skidding post-skidding 0.91...
Ngày tải lên: 07/08/2014, 03:22
Báo cáo vật lý: "Electrochemical Studies of Mild Steel Corrosion Inhibition in Aqueous Solution by Uncaria gambir Extract" doc
... mild steel Mild steel without inhibitor Mild steel with inhibitor Element (%) O 1.54 23.63 1.23 C 1.44 1.49 2.59 (a) Figure 7: The EDX spectra of mild steel in (a) fresh steel, (b) without inhibitor, ... of mild steel in (a) fresh steel, (b) without inhibitor, ppm (c) with inhibitor, 150 ppm (continued on next page) (c) Figure 6: (continued) Table 6: The composition of the sample regarding the ... Electrochemical Studies of Mild Steel Corrosion Inhibition mostly found in fruits and plants such as tea leaves, wine and potatoes.5 Interestingly, catechin exhibits an anti-oxidative activity...
Ngày tải lên: 07/08/2014, 14:20
Báo cáo vật lý: "Effect of Temperature on Corrosion Behavior of AISI 304 Stainless Steel with Magnesium Carbonate Deposit" docx
... At 1000oC, the coated alloy showed initial increased, followed by a decrease in mass loss up to 72 h Then further increase in time has resulting an increased in mass The effect of temperature ... be in digital files as separate files, not embedded in text files The files should follow the following guidelines: • 300 dpi or higher • sized to fit on page with measurement of 5.0 in × 7.5 in ... 950°C 30 1000°C 20 10 0 24 48 72 96 120 Exposure period in hour Figure 1: The change in mass with time (oxidation kinetic) curves of stainless steel AISI 304 coated with MgCO3 , oxidized at 900oC,...
Ngày tải lên: 07/08/2014, 14:20
Báo cáo y học: "Phenotypic and functional characterisation of CD4+ memory T cells homing to the joints in juvenile idiopathic arthritis" pps
... structures In contrast, CCR5+ cells were detected mainly in the lining layer and in the sublining zone of the superficial subintima and, to a smaller extent, in the perivascular infiltrates of sublining ... aggregates in the sublining layer or scattered throughout the synovium up to the lining layer [20] Conversely, CCR5-positive cells were detected mainly in the lining layer and in the sublining zone ... arthritis Patient no Age (year) Form Pattern CD3 CCR7 CXCR3 Lining Sublining CCR5 Aggregates Lining Sublining Aggregates Lining Sublining Aggregates 14 Oligo per Diffuse +++ + +++ NP +++ +++ NP...
Ngày tải lên: 09/08/2014, 06:22
Báo cáo y học: "Magnetic resonance imaging changes of sacroiliac joints in patients with recent-onset inflammatory back pain: inter-reader reliability and prevalence of abnormalities" potx
... of interest in an ongoing ASAS-OMERACT working group [13] Conclusion 10 MRI can reliably detect inflammation and structural changes in SI joints in patients with early inflammatory back pain ... reflecting the agreement for detecting inflammation were reasonable (right SI joint, 0.68; left SI joint, 0.51) Table also provides insight into the prevalence of the various findings in this ... Number of patients with involvement of sacroiliac joints Only the left sacroiliac joint Only the right sacroiliac joint Both sacroiliac joints One or two sacroiliac joints Inflammation 10 22 Structural...
Ngày tải lên: 09/08/2014, 07:20
Báo cáo y học: "proximal interphalangeal joints in rheumatoid arthritis: a comparison with magnetic resonance imaging, conventional radiography and clinical examination" pdf
... the MRI finding of erosions in the finger joints is that Table Signs of inflammation on ultrasonography versus clinical joint assessment in finger joints Signs of inflammation US + clinical assessment ... only in 27 joints (25%), on the palmar aspect only in 19 joints (17.7%), and on the radial aspect only in five joints (4.6%) In PIP joints, of which 86 exhibited ultrasonographic signs of inflammation, ... aspect in 26 joints (30.2%), on the dorsal aspect only in 16 joints (18.6%), on the palmar aspect only in 37 joints (43%), and on the radial or ulnar aspect only in seven joints (8.1%) Discussion In...
Ngày tải lên: 09/08/2014, 07:20
Báo cáo y học: "Relationship between physical activity and stiff or painful joints in mid-aged women and older women: a 3-year prospective study" pot
... stiff or painful joints 'often' over years, even after adjusting for confounding variables This last finding indicates that, among older women who not have or rarely have stiff or painful joints, ... protective These findings consequently indicate that public health and clinical advice for older women not currently experiencing stiff or painful joints should routinely include counseling on ways ... arthritis in women In contrast, being in the highest quartile of total daily physical activity in the Framingham cohort study [8] increased the risk of incident radiographic arthritis in women in the...
Ngày tải lên: 09/08/2014, 10:20
Báo cáo y học: "Immunohistological assessment of the synovial tissue in small joints in rheumatoid arthritis: validation of a minimally invasive ultrasound-guided synovial biopsy procedure" potx
... CD68, CD3 and CD20 cells In our series, considering one cutting level in five out of nine cases, two cutting levels in eight out of nine cases, and three cutting levels in all cases produced a ... infiltration, lining layer thickness or vascularity scores [15] Our analysis focusing on synovial tissue obtained surgically from small joints reproduces these findings, demonstrating that the ... surgical synovial tissue specimens were obtained during arthroplasty or synovectomy from clinically involved (swollen) small joints of nine patients with longstanding erosive RA who fulfilled the 1987...
Ngày tải lên: 09/08/2014, 10:21
