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  • Users: metman
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  1. metman

    nascar

    In the NASCAR chase race today the winner, car #78, Martin Truex, furniture ROW, the car failed the post race lazer test for the left rear wheel alignment by 10 thousandths of an inch. A very small infraction by any standard unless you are a nano-technologist. At any rate, it failed but what...
  2. metman

    Retrieving a saved template 2013

    This SW2013x64 Edition SP0 Under Options/Document Properties, I chose my preferred settings for units and visual dimension scheme. Then I saved as part.prtdot (template). How do I retrieve the template to open it? Where is it actually stored? I have not closed the document so I tried a...
  3. metman

    Aged metallurgy books

    Our great nephew has been accepted at Rolla School of Mines in Metallurgical Engineering. I went o-line to look for Physical Metallurgy for Engineers by Clark and Varney and while there saw Tool Steels by Roberts, Hamaker, and Jhonson - really cheap. So I bought those and 3 other books that...
  4. metman

    What is that sound from our furnace?

    We have a gas-fired, forced air furnace for heating our home. When we turn up the thermostat or when the temperature drops, of course the furnace comes "on." When it comes on, there is a low frequency sound that is emitted while it begins to heat before the fan starts. I can hear this sound...
  5. metman

    Graphene tennis raquet?

    Machine Design magazine for March has an article about Fabricating 2D Materials. Graphene is one of the materials written about and is more than 200 X stronger than mild steel!! Today on TV I noticed that Prince is advertising GRAPHENE tennis raquets. Can this be real or are they just playing...
  6. metman

    '48-53 Ford Transmission jumps out of second gear

    A little background first: We took my brother-in-law's 1941 Ford 2 door sedan for a test drive to diagnose a miss in the 1948 flathead that only occured when hot in summer -- worked fine in winter. We finally removed the electronic distributor and replaced with the 1941 mecahnical, dual point...
  7. metman

    SW 2013 overlapping windows

    When the Document Properties dialog is on the screen, some of the bottom portion of the DP window is covered by the win 7 task pane. In other words, the DP window is slightly too large for the screen and the arrow cursor cannot access the OK, Cancel, Help buttons because they are underneath the...
  8. metman

    severity of quench for 5160 or 6150

    3/8" x 1.5" x 3 material. Q1) Is water quench too severe for these alloys with this mass and section size? I intend to recommend tempering to 50-55 HRC because it will act as an impacted cutting blade -- one of three per head -- for primitive manual well drilling in third world countries...
  9. metman

    combustion temperature of Iron?

    following is the answer from the Answers website: Answer: According to my (not metman) welding book. The ignition temperature of steel is 1500 degrees Fahrenheit (816 degrees Celsius). metman's handbook of Chemistry and Physics gives m.p 1535C = 1535F; b.p 3000C = 5432F Is it possible for the...
  10. metman

    non-circular torsional stress

    In strength of materials text by Singer for torsional shearing stress of a rectangular section: Ss = (T/ab2)[3 + 1.8(b/a)] Where T = Torque or torsional load a = long side and b = short side of the rectangular section I have a symmetrical built-up section – and therefore not solid. Can I...
  11. metman

    Flanged Plastic Bushings Catalog

    I am looking for dimensions and supplier. This is just to insulate welding wire spool from truck bed where mounting bolts attach the spool. Therefore the bushing bore needs to be >0.375 or >0.500". None of the links have dimensions or catalog that I can find. Design for RELIABILITY...
  12. metman

    Brisbane, Australia -- Pressure vessel mfgrs in or near

    Looking for 5 top companies in or around Brisbane that build pressure vessels and similar steel structural equipment. They would need to have ability to build tanks up to 60,000 gal water capacity. Any help geatly appreiated Design for RELIABILITY, manufacturability, and maintainability
  13. metman

    Caterpillar diesel ACERT

    Cat has numerous diesel engines that have the ACERT designation. Can anybody tell me what the acronym ACERT stands for? for example: Cat C15 ACERT used in their AD30 Underground Articulated Truck (actually 15.2L) Cat C7 ACERT used in their 120K Motor Grader (actually 7.2L) Cat C7.1 ACERT used...
  14. metman

    weld symbol callout

    Weld of thick wall tube to plate with round side against plate. What is the correct weld symbol? It is not a bevel, J, or fillet but I suppose fillet is closest? Design for RELIABILITY, manufacturability, and maintainability
  15. metman

    SAE J/ISO 3471 ROPS

    SAE J/ISO 3471 supersedes SAE J1040 for ROPS (RollOver Protective Structures). In 3471 Table 1 – Force and energy equations it specifies energy, U, in units of joules. However, in the column for Lateral load energy, it calls out factors of m (machine mass). Mass in units of kg is not energy...
  16. metman

    Friction coefficient rubber vs paint

    The rubber material is vulcanized onto mild steel plate which is welded to a subframe as part of a 45k water tank resting on the chassis of a Caterpillar 793 Off-Highway truck. This subframe carries part of the load and fixed connections support the other portion of the load. Durometer and...
  17. metman

    3D model of 1-1/2" Shackle

    I am trying to register with 3D content central but the confirmation has a bug. Meanwhile does someone have access to a 3D model of a 1-1/2" lifting shackle? I would love to model it but I have already used up gobs of time researching Blodget's Design of Weldments -- very (too) intereting...
  18. metman

    V4A S.S.

    What is the type and composition? Ref: page 16, April 5, 2012 MACHINE DESIGN magazine. Ace Controls miniature shocks. just curious. Thanks Design for RELIABILITY, manufacturability, and maintainability
  19. metman

    49 CFR Subchapter C Subpart J

    My only question here is; What does the abbreviation IBR mean? IBR is just inside the parentheses after (a). 49 CFR § 178.345-2 Material and material thickness. (a)All material for shell, heads, bulkheads, and baffles must conform to Section II of the ASME Code (IBR, see §171.7 of this...
  20. metman

    ce certification for European water trucks

    For the USA we use Title 49 CFR (Code of Federal Regulations) "cargo tank" per Part 178 Subpart J. for standards of design stresses for water trucks. To sell a water truck in Europe we apparently need to be certified to CE. Following is a link to the meaning of CE certification mark...

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