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  • Users: brents
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  1. brents

    size of bolts in a hydraulic cylinder

    hello, i have an aluminum cylinder with an aluminum flange screwed into the end with (8) 1/4-20 bolts with a thread engagement of .375" for each bolt... the bore of the cylinder is 2.625" and the input pressure will be 10,000 psi.. my question is: are the 1/4-20 tapped holes in the 6061 alum...
  2. brents

    heat treating 17-4 ph

    Hello, Does anyone know the tempering temperature to heat treat 17-4 ph stainless to 50+ Rc? I know this is really hard, but water is going through it at about 15,000 psi.. any help would be appreciated, thanks, brent
  3. brents

    heat treating books

    Hello all, I am in process of buying some fairly small heat treat furnaces.. I do mostly 4140 and 4130 steel, and some 17-4 ph stainless.. I have been looking on the web for some books..there a a lot of different books, and I just want to know if anyone knows of a great book(s) that I can...
  4. brents

    stainless steel finishing

    Hello all, I have some parts that are made from 17-4 ph stainless..these parts are heat treated to h900 condition.. after heat treat, the parts are discolored.. I am needing to bring the "shiny" color back into the part because the customer likes the look.. I do not have time to hand polish...
  5. brents

    jaws of life

    Hello all, This question is out of curiosity more than anything.. just curious on what material the blades are made from on tools like the jaws of life.. looks like it would have to be a tool steel..but i guess it could be a high nickel grade alloy steel that perhaps could be carburized for...
  6. brents

    fiberglass tubing

    Hello all, I am looking for a non-conductive fiberglass tube. this tube needs to be approx. 7/16" OD by 5/16" ID..and it needs to be able to withstand 2000 psi of hydraulic oil.. I have been looking everywhere locally and no one carries this stuff.. any help would be appreciated.. thanks, brent
  7. brents

    hydraulic motor gears

    Hello all, I am trying to design a hydraulic motor. I am not very experienced in this so here is my question. I have seen the gears in some hydraulic motors, and they seem to be a "spur type" gear configuration, but they seem a little different than a typical spur gear.. I have been all over...
  8. brents

    treatment of 0-1 tool steel

    I have a print from japan that I am making parts for right now.. it is made from 0-1 tool steel It calls out for heat treat to 59-63 Rc..no problem, but it also calls out for a surface treatment MICr2.. I have been all over the internet and I can't figure out what MICr2 is.. Any help would...
  9. brents

    open/closed valve spool

    I posted this question awhile back in another forum. I am stumped! I currently manufacture hydraulic valves. which will operate a certain kind of equipment. I offer either open center valve, or closed center valve. How can I make One valve to be able to operate on both closed and open...
  10. brents

    cylcle testing..plc?

    Hi all, I do not have a good electrical background,hence the reason for my question.. I need to cycle test a unit to see if it will last over a certain amount of cycles (approx. 10,000 cycles).. Its basically a hydraulic cylinder that I need to run up to full pressure(10,000 psi) and then...
  11. brents

    closed& open center valves?

    I know that closed center and open center valves will possibly use a different valve spool from each other. Is there any information I can obtain anywhere that could possibly explain how to make a valve both open center and closed center without having different valve spools? I would like to...
  12. brents

    displacement of hydraulic gear motor?

    Hopefully I can explain this... I have a hydraulic gear motor, which has two spur type gears that mesh with each other inside the housing. The dimensions are: O.D of each gear=.858" dia. thickness of gear=.625" # of teeth= 11 teeth per gear distance between centers is .750" flow= 7 gallons per...
  13. brents

    Pressure relief, need sound

    Hello, I have an application that requires a 10,000 psi pressure relief..Is there anyway,(without electronics), that when the system reaches the 10,000 psi, that there could be a very noticable sound when it kicks off? Basically its a hydraulic press, and I would like to know by sound when i...
  14. brents

    cable cutting

    I have some 1000 kcmil aluminum cable that needs to be cut into pieces for scrap.. I want to buy a tool to cut this stuff..How do you figure what pressure is required to cut this stuff..I would like an air tool that would do this, since we see this stuff a lot.. I can't figure out how much...
  15. brents

    Engineering books

    Forgive me for my elementary question, I get tired of being on the computer, as I rather read from a book. On that note, Does anyone have some recomendations on some very good engineering books? I really would like to find a book that has a lot of information about thread strengths. Like...
  16. brents

    Cinder block&Brick strength

    Hello all, Could anyone point me into the right direction when it comes to what kind of cinder block or brick that is used for commercial buildings, past to present.. I need to find the compression strength of both materials when a load is applied to the side of the wall.. thanks, brent
  17. brents

    Choices of Threads

    I have been reading a lot of questions and answers on this BBS and I am way out of my league here. So I'll apologize now for being lower on the totem pole. Here is my question: I'm looking at designing a Hydraulic cylinder. I am confused about thread strength..The unit will be a 10,000 psi...
  18. brents

    replacing steel with titanium

    Hello, I should say that I am a novice when it comes to Titanium..Are certain grades of Titanium heat treatable? My application is to replace a heavy piece of 4140 steel heat treated to 55 Rc, with maybe titanium..Is this possible? The piece would see about 13 Tons of compressive force...
  19. brents

    Parametric programming

    Hello all, Anyone know of a good book on parametric programming? My machine manual doesn't go into it too well.. I would like to machine using equations.. thanks, Brent

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