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Steel and Corrosion
2009-09-22 12:27:00 why carbon steel get corrosion whether stainless do not get corrode
Constants and Corrosion Rates
2009-09-08 18:40:00 Hello, I am currently dealing with constants I have never heard of before, especially the rate constant for oxydation and sulfidation of metal: kp. The units are g^2 cm^4 s^-1 and I can't visualize what it really means... I understand that the time is in there because
Unusual deposit/corrosion on stainless steel
2009-08-11 22:37:00 Hello, We are seeing some odd deposits show up on a stainless steel part that is submerged in water. It seems to only happen periodically and may be related to different water chemistry but I am not sure what in water chemistry could cause this. Any ideas on what could
corrosion
2009-07-20 04:22:00 What material sould be used for valves against both H2S and CL corrosion
Corrosion-Resistant Valve Materials
2009-07-20 04:22:00 What material sould be used for valves against both H2S and CL corrosion
NACE(AUTHORITY FOR CORROSION ENGINEERS) APPROVED AGENCY TO TAKE UP CP MODEL
2009-06-06 17:11:00 Dear sir's, A very Good morning to you. With reference to above subject and with reference to specific project interest in SAUDI ARABIA,I would like to get clarified the following details from you:- 1)I would like to know whether U are an APPROVED/REGISTERED/CERTIFIED vendor by NACE
Chlorine and Corrosion of Steel
2009-06-02 16:27:00 What's the effect of cholorine on carbon steel,stainless steel&cast iron corrosion in petroleum industry? is anyone know good site which can help me?
corrosion of Nickel
2009-05-28 07:54:00 How to avoid corrosion of nickel in presence of high concentration (97%) high temperature caustic and steam due to evaporation of caustic feed at 47 %?
What is Thermic Corrosion?
2009-04-27 15:40:00 Our French customer recently mentioned Thermic Corrosion in a meeting. We all assumed someone else would understand but after the meeting we found that our 60 odd man years of engineering experience did not include Thermic Corrosion. Is it a mistranslation from French or does someone know what it me
Determination of corrosion rate of aluminum anode
2009-04-17 20:00:00 I would want to know how I can determine the corrosion rate of Aluminum anodes(130 pieces, 9.6 kg, type 3 H7, dimension: 480x140x70mm), in a bulk oil tank? Regards, Emma.
416 SS Parts Need More Corrosion Resistance
2009-04-06 22:37:00 I have a line of transportation locks that use a 416 stainless steel bar that's exposed to the elements in normal use. After a couple of illinois winters the SS gets some surface rust on it. What cost effective treatments (passivating etc.), or coatings/platings would give me a nominal increase in p
CR4 next to Stainless - will galvanic corrosion occur?
2009-03-12 11:48:00 We potentially have an issue with some mild steel station benches that we are refurbishing for a customer. The legs are rusting under the plastic surface coating. As this seems the only place any corrosion occurs we were considering replacing the bottom half of the legs with stainless prior to th
corrosion test for dec. chrome
2009-03-02 04:25:00 which is the right test to determine corrosion resistance of decorative chrome coating.
UVC Lamps and Cooling Coil Corrosion
2009-02-12 20:16:00 Has anyone seen or experienced rapid metal corrosion and materials degradation in air handling units with UVC lamps installed downstream of the cooling coils? I am working in a building that has been open since June of 2008 and there is severe corrosion taking place within the air handler a
Steam Pipes - Allowable Corrosion
2009-01-22 12:40:00 How much should we taken into consideration for corrosion allowance for steam pipe with 4bar pressure and 130 degrees in centigrade?How many years are valid for the mentioned corrosion allowance?
Galvanic Corrosion
2009-01-21 06:12:00 Should I be concerned with galvanic corrosion between a 18-8 stainless steel screw threaded into a zinc plated nut where only the head of the screw will be exposed to rain, and other chemicals are unlikely to be present? If so, would a thread adhesive be useful to separate the metals, or should I c
Corrosion in 95% sulphuric acid service
2009-01-13 01:48:00 We are experiencing some severe corrosion of relief valve discs and nozzles in 95% sulphuric acid service. The nozzles and discs material is 316 Ti. The piping class for this acid dosing packege is 11091. Any idea on a suitable replacement material?.
Hydrotreating Reactor Corrosion
2008-12-22 12:45:00 What is the most important corrosion threat in the refinery hydrotreating reactor? specially in case of 321 shell cladding.
Blind to withstand Corrosion Allowance
2008-12-04 10:40:00 Dear Engineers / Sirs, I'd read several threads in this website & found it very informative. I would like to know did ASME B16.5 or B16.47 has considered C.A. & how to determine that blind can withstand for certain c.a or not. example: If C.A. was 3mm, can blind with rating 15
Battery corrosion
2008-12-01 13:58:00 I have been told that automotive type (wet cell) batteries corrode differently from deep cycle (marine) batteries. I understand the physical differences in construction between the two and what they are designed to do, but using the same basic components; lead plates,acid electrolyte, etc., I cannot
corrosion resistance of SS 410
2008-11-27 06:15:00 We purchased Twin screw extruder. We had given specifications for contact parts (i.e. barrel and screw elements) to be made of SS 410. Manufacturer supplied the machine stating that contact parts to be of SS 410. We are processing wet maize starch in the extruder. Normal iron content of maize starch
Sulphur prilling unit belt stress corrosion cracking
2008-10-12 14:44:00 I am currently facing early failure of Sulphur prilling unit steel belt. OEM says that failure is due to stress corrosion cracking from sea salts (unit is located near sea). We are currently using SS316 belt. We can hardly get a life of 1 year on the belt. Is there any thing that can be done
Hi-temp corrosion resistor
2008-09-19 22:15:00 Can anyone help me find a hi-temp corrosion resistant spray or brush-on type. We need to cover welded sections on large truck exhausts.
How the Corrosion alloawance is related underground vessels, mounded bullet
2008-09-02 14:59:00 Dear Sir, We would like to know that how the Corrosion alloawance is related underground vessels, mounded bullet ? Whether operating temperature of the equipments will affect / place vital role in the corrosion of the same ? Regards, Naresh Thebhat
Mild steel corrosion and caustic
2008-05-28 01:08:00 I am in the process of designing a Mild Steel tank for holding 48%w/w of Caustic, NaOH at ambient temperature. Does anyone know the corrosion rate of mild steel (300+Steel) exposed to caustic at approximately 50% w/w at ambient temperature
Corrosion Control
2008-05-23 17:23:00 I would like to know the best corrosion control practice for Corrosion under insulation(CUI) and Microbial corrosion.
The Ubiquitous Coating: Industries Armor Against Chemicals, Corrosion
2008-05-21 00:00:00 Coatings have been used for centuries in human history. In some of their basic, more practical functions, they have been used to gloss over wood to prevent rotting, or even used for food preservation– say for instance brine and salt over meat to prevent spoilage. In this modern age coatings are quite chemically complex and ...
Corrosion Problem in Residue Hydrocracking Unit
2008-03-31 15:12:00 Dear everybody, We found the next corrosion problem in atmospheric tower of our Residue Hydrocracking Unit: • overhead trays made from MONEL metall • The mostly attacked trays were the 12-18 which was destroyed and were not able for
Low Alloy P11 (1,25Cr+0,5Mo) Corrosion in Ethanol+H2O
2008-03-24 17:15:00 Good Afternoon, My name's Rafael Teraoka and I'm trying to find a particular info about the low alloy P11 (1,25 Cr + 0,5 Mo) which is: - corrosion data of the P11 in ethanol + water (vapour form) at 470ºC (878 ºF). The reason I'm asking is because my company is considering u
Corrosion in SS 316 Pipe in Copper Sulfate + Sulfuric acid solution
2008-02-24 15:22:00 We are electrorefining copper by Electrolysis process. We use Copper sulfate + sulfuric acid solution as electrolyte. About 50-50 mgpl Cl ion is also present in electrolyte. There are four tanks. But in one tank after every two months one pipe (10 inch) gets corroded near the flange joint. The piece
Sea Water Corrosion
2008-02-14 19:54:00 Which pipe material strenghts to sea water corrosion,we will pump sea water from sea with 10" pipe.(SS 304,316,430 or CS Lined and covered with polietilen) Pleaes advise me that who has an experience about this subject. Thanks,
Corrosion Engineer
2008-02-01 12:52:00 I need a qualified corrosion Engineer with not less than 10 years relevant experience and with NACE Qualifications. My company provide services to oil and gas sector in Nigeria
Corrosion of SS316 Material
2008-01-31 11:03:00 Hello sir, I saw two SS316 material constructed equipments highly exposed to the chemical in two paper machines at different locations using same process and chemicals for making paper. Environmental consideration is also negligible as both mills are located in the same geographical reg
CORROSION OF CONFORMITY - ANIMOSITY
2008-01-26 19:46:00 CORROSION OF CONFORMITY - ANIMOSITY .1.Loss For Words 2.Mad World 3.Consumed 4.Holier5.Positive Outlook 6.Prayer 7.Intervention 8.Kiss Of Death 9.Hungry Child 10.Animosity ..Corrosion of conformity es una legendaria banda Hardcore punk formadaen el año 1982,la banda empezo con ese sonido y atraves de los años fuemutando hasta tranformarse casi en una banda heavy,este que les dejo esel segundo disco del grupo lanzado en el año 1985,me gusta mucho estedisco espero que a ustedes tambien!!!!..Descarga - 42.7mbhttp://lix.in/4cd615c2
By: X Siempre joven
Electrochemical Corrosion
2008-01-23 15:27:00 According to some technical recommendation, we must be concerned about metal under ground structures (e.g. pipe lines) corrosion in neighbor of power transmission lines. Sinusoidal high current elements can produce eddy induced currents in their surroundings .The eddy currents in electr
Australia-APA(I) in Optimal Management of Corrosion
2008-01-14 04:50:00 The University of Sydney, Australia A 3 years full-time PhD scholarships funded by an ARC Linkage-Project grant is currently open for application. This is part of a national research project designed to carry out comprehensive and in-depth study of the chemical and microbiological stability of polymeric and inorganic linings in the gas phase of sewer systems. These coatings are used for long term protection of sewer concrete against acid corrosion caused by microbiologically generated sulphuric acid and chelating carboxylic acids generated by fungal growth. ISSUE Domestic wastewater is transported to wastewater treatment plants in concrete pipes. In many instances hydrogen sulphide is generated in the wastewater. The low solubility hydrogen sulphide is released to the headspace of the pipes where it is oxidized to sulphuric acid by sulphide oxidizing bacteria. (more…) Share This Tags: australia, biochemistry, chemical engineering, material science, new zealan...
By: free scholarship
HCl corrosion resistant Liquid ring vacuum pump needed...
2008-01-10 14:41:00 Colleagues- Does anyone know of a manufacturer of a HCl-resistant Liquid ring vacuum pumps? The materials of construction I'm looking for are a glass lined steel, ceramic, plastic, hastelloy, or inconel liquid ring impeller and pump housing. All of the suppliers I've talked to either mistak
Corrosion Retardation
2008-01-10 11:16:00 Inquisitive student asks teaching assistant (myself) a question I couldn't answer...... Although Nickel is above Aluminium in the galvanic series does anyone know of any circumstances in which Nickel will corrode faster?...ie in which environment and under what circumstances? My understanding
Corrosion Tests on Inconel Alloys 604 & 617
2008-01-09 16:00:00 We are currently running tests on inconel alloys utilizing solution aqua regent for comparison of treated vs. untreated samples. We are looking to start w/ untreated sample and are trying to achieve total destruction of oxide layer w/minimal disturbance of substrate.Is an aqua regent suitable for th
Acidic Water Filtration Systems Prevent Copper Pipe Corrosion on Acid Well
2008-01-09 00:00:00 In thousands of homes on well water, acidic water causes thinning of copper pipes, pinhole leaks, and numerous copper pipe leaks over time. Acidic water filtration systems can easily correct and neutralize a low pH in well water. The pH scale is a scale from 1 to 14. A neutral pH is 7. A ph ...
Corrosion engineerm (pipeline corrosion control)
2008-01-05 13:40:00 Hello All, To my supprise since my graduation as a corrosion engineer with specialty "pipeline cathodic protection system" field survey and monitoring I have not been able to find a work. It seems mechanical engineers are also involved in corrosion protection or prevention since they deal wit
Corrosion in pool equipment room
2007-12-20 16:28:00 In the course of my job, it was noticed that a considerable amount of corrosion has occured on metal surfaces in a newly constructed high school pool (1 year old). The amount of rust is truly unbelievable. Chemicals for the pool are stored in the mechanical room also. What would be creating this
Aluminum Cooper Corrosion
2007-12-10 19:04:00 I use cooper pipe for oil(the internal hydraulic part of a dispenser pump). Please inform me what happen if I have a joint between aluminum and coope material
Anti-corrosion PipeWrap. Serviwrap M30A & M30B
2007-10-25 04:35:00 What is ServiWrap For the protection of butt weld joints against corrosion damage on concrete weight coated submarine pipelines, where the joints will be infilled with hot marine mastic, PU Foam or other forms of infill materials.
SAIC Awarded Contract to Support Center for Corrosion Science and …
2007-10-24 21:37:00 Forbes - SAI) announced today that it has won a follow-on contract from the Naval Research Laboratory's (NRL) Center for Corrosion Science and Engineering (CCSE) to support its program on... [[ This is a content summary only. Visit my website for full links, other content, and more! ]]
By: Engineers Voice
Corrosion Allowance
2007-09-15 15:47:00 I wanted to know the definition of corrosion allowance & why is it required when we are calculating the line size.
Thermal Transfer Fluid Corrosion Inhibitors
2007-09-06 21:47:00 Does anyone know of a corrosion inhibitor for a closed system using Ethylene Glycol that is suitable for a system that includes Aluminum?
Corrosion
2007-08-02 20:51:00 This post is about corrosion, Thanks Kevin from South Africa for asking books on Corossion. I have posted some books on that topic. Hope will be helpful for all.Corrosion of AluminiumBy Christian Vargelhttp://rapidshare.com/fil-es/8551893/e0080444954.pdf.html-CorrosionBy R. Jarmanhttp://mihd.net/hgmd84Cor-rosion Inspection and MonitoringBy Pierre Rhttp://rapidshare.com/files/16-590105/CoInMo.rar.htmlCorrosion- Science and TechnologyBy David Talbothttp://rapidshare.com/fil-es/8430118/Corrosion_Science_an-d_Technology-David_Talbott.pdfH-andbook of Corrosion EngineeringBy Pierre R. Robergehttp://rapidshare.com/fi-les/41811552/Roberge_P.R._-_Han-dbook_of_Corrosion_Engineering_-_McGraw-Hill_1999.rarSteelwork- Corrosion ControlBy D.A. BAYLISShttp://mihd.net/7s4vz9Co-rrosion Control Through Organic CoatingsBy Amy Forsgrenhttp://mihd.net/dm763kC-orrosion Mechanisms in Theory and PracticeBy Philippe Marcushttp://mihd.net/uwvpr3Cor-rosion Resistant Materials HandbookBy D. J. De Renzohttp://rapidshare.com/fi..-.
Cost of Corrosion
2007-07-20 20:52:00 Corrosion is omnipresent and affects vertually every thing on the earth. Only the difference will be in the rate of corrosion. Do we have any authenti... |
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