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  1. Soldador

    Furfural heat exchanger tubes

    sorry 25362 for being late, I was out of town. Regarding to the gauge, it is possible, I do not have the chance to check that. Regarding to the condensing temperature, I double check that information and it is correct. you are right when you refer to where the mixture is discharged into. I´d...
  2. Soldador

    Furfural heat exchanger tubes

    I do not know the process in details. I also do not know if I follow what you say. sorry but this subject is not one of my strong point. What I can tell you is that furfural is used as a solvent in the manufacturing of some lubricants. After all the typical destilation processes, the remant...
  3. Soldador

    Furfural heat exchanger tubes

    Yes, this theread is releted with the other one Thank you very much for your quick and helpful answer
  4. Soldador

    Furfural heat exchanger tubes

    Hi guys, I have a problem with a dry furfural condenser used in the lube plant to separate certain kind of lubricant. Inside the tubes, a cold mix of furfural (solvent) + hydrocarbon (containing the lubricant to be separated) circulates, while hot furfural circulates in the other side. The main...
  5. Soldador

    Dry Furfural Condenser

    Hi guys, What material should I used for a dry Furfural condenser that we used in the lube plant?. We used this equipment to exchange heat from acircuit containing furfural (solvent) to a cold mix of furfural and hydrocarbon (containing the lubrican to be separated later). Thanks for your time
  6. Soldador

    Furfural condenser

    divice: dry furfural condenser application: lubricant manufacture objective: exchange heat between two different circuit of furfural in order to save energy. subject: Materials Selection Hi Guys, is it possible to use carbon steel or stainless steel in tubes of Furfural condensers? Tin= 450...
  7. Soldador

    Do you know any metallography etching data base?

    Does anybody know a metallography etching web site ? I am trying to etch a dissimilar welding (monel-304L). I have already tried cromic, nitric-hydrocloric-acetic, nitric-acetic,and oxalic. but the results were not good. Some of them preferencialy attack the grain boundary or the...
  8. Soldador

    Twin Wire Technique using TIG

    Basically, I am going on with the project that have mentioned before in this forum: Dissimilar Welding between 304L and Monel (as a Filler Metal). Because of the corrosion behavior changes (galvanic corrosion), We are traiting to change the chemical composition of the weld pool using monel and...
  9. Soldador

    Twin Wire Technique using TIG

    Anybody Knows about this technique? Basically, One use two wires. So that, One can reach different chemical composition in the weld metal using different wires. I need to know what wire configuration is the best. I guess to put both wires in front of the torch, but I am not sure about that...
  10. Soldador

    Monel - type 304 SS dissimilar welding

    the reason is because we are looking for a welding procedure with free Cr+6 fume emision. We think if we control de dilution during the welding, then we can reduce the Cr+6 emision produced by type 304 SS, which affects the healt.
  11. Soldador

    Monel - type 304 SS dissimilar welding

    The particular case is the following: Groove weld plate horizontal (1G AWS), thickness 1/4 in., GTAW 100%Argon.
  12. Soldador

    Monel - type 304 SS dissimilar welding

    I need to have any idea of the welding parameters to weld a 304L plate using monel filler 60 (or 67).Or any parameter that you have used with similar materials. The welding proccess is GTAW. thanks
  13. Soldador

    TTT curves for duplex stainless steel

    Hi Check in the following web: http://inaba.nims.go.jp/Weld/ see the link CCT diagrams. good luck Gustavo.-

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