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  • Users: PressEquip
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  1. PressEquip

    NDE UT of Forged Ring (Hollow Forging), SA-388, Reference-Block Calibration, Change in Thickness

    Hello, Question: For a physical calibration standard/block for angle beam UT, how much of a change in thickness is allowed between the forging being UT inspected and the calibration standard/block? We often buy forged rings that are then machined into body flanges. One of out suppliers only...
  2. PressEquip

    Nut Splitter Tool, H11? H13? Tool Steel, Good Material?

    Requesting feedback on tool steel material recommendation for nut splitter wedge. Used to split seized nuts, typically A-194 2H [Nuts have max hardness of 38 HRC (327 Brinell)], nut batches are proof load tested based on proof stress of 175 ksi. In the past, the trades men at the company...
  3. PressEquip

    What material is used for the large rolling shafts in steel mills and plate rolls?

    What material is used for the large rolling shafts that are used to roll plate in steel plate mills? What material is used for the large rolling shafts that are used to roll plate into shell courses or cones? Is a different material used in hot rolling (steel plate mill) than in cold rolling...
  4. PressEquip

    Welding Q&T 4340 to Carbon Steel, As Welded, Asking for Advice/Feedback

    Thank you in advance for your time and potential responses At the shop they repair equipment used at the facility. In this case it is a fork lift. There is pivot point (pin with a bushing), that eventually develops a flat spot (especially on the ones from the factory which are mild steel)...
  5. PressEquip

    What are the best/better test methods for determining oil cut? These wells have high water cut

    Hello, I'm not a petroleum engineer, please be understanding of my limit knowledge My desire is to determine the best test method for measuring oil cut to an accuracy precision of ±0.1% volume. Test needs to be judged from economic perspective too. Needs to be practical and economical...
  6. PressEquip

    H2S, Material Requirements for Wet H2S Service, Phosphorous

    Many oil and gas plant owners and operators have their own material specifications that relate to steel plate exposed to wet H2S service. Often these client specification are partly based on the following: - NACE MR0175/ISO 15156-1:2015 Petroleum, petrochemical, and natural gas industries -...
  7. PressEquip

    Is 17-4 PH, aged at H900 Suitable for a Wrench like Tool? Or is H1025 Better Suited

    Hello, I've been asked to help design a wrench like tool that will be used at ambient temperatures and exposed to grease, fastener lubricant, rain/snow and a petro-chemical plant environment. A material that came up was 17-4, precipitation hardened to H900. The condition H900 has high...
  8. PressEquip

    Flanged Connection with Two Gaskets: One Within Bolt Circle, One Outside Bolt Circle

    Hello, There is an existing piece of pressure equipment built to the ~1968 Edition of ASME Sect. VIII, Div. 1 that has a flanged connection with two gaskets: one within the bolt circle, one outside the bolt circle. One of the flange sides is drilled and tapped with threads. The two gaskets...
  9. PressEquip

    ListBox, VB Script, MathCad15

    Hello, I'm not very experienced with MathCad15 or programming. I'm looking for advice and resources on using Listbox and VBscript. In MathCad I created a Matrix and propagated it with values. I then created a ListBox. I want to edit the script of the list box so that the ListBox shows the...
  10. PressEquip

    Want Suggestions for Cast Material Suitable for High Temperature Use and Significant Abrasion Resist

    Hello, There is a ball that is used for form metal in a spinning process which includes hot spinning. Ideal material would have high abrasion resistance, high toughness and suitable for high temperature use (surface temperatures up to ~1300F). Ball size: 40” OD (39.370” finished OD) x 11.5”...
  11. PressEquip

    Want feedback on Wear Resistant Roller Material - Thinking AISI D2

    Thank you for reading my post I'm working on a replacement design of a weld coupon bender. This bender would bend maybe 30 coupons a month. A plunger comes down and pushes the coupon through two rollers. I'm thinking of using shaft of 4140 (~0.84375" OD) x ~5" long that the rollers would...
  12. PressEquip

    FAILURE ANALYSIS, PUNCH IN CYCLIC COMPRESSION, AISI 8620, CARBURIZING

    Hello, For certain field jobs the machine shop makes custom attachments for the pneumatic hammer. They've been doing this for a long time (we've started to formalize the process). Most of the time it works out well but this year the field job was really tough and lots of these attachments...
  13. PressEquip

    Welding:Hot Wire Tig (GTAW) Weld Overlay of Nickel Alloy (Such as C-686, C-2000, Alloy 59) on C.S.

    Hello, We're trying to develop a weld overlay of nickel alloys onto carbon steel. Client wants to achieve minimum of 1/8" THK of electrode chemistry at the final surface (Spark Test at the surface must have results that fall into the electrode chemistry requirements per ASME Sect. II, Part C...
  14. PressEquip

    Want Help in Picking a Suitable Material for a Injection Molded Part (~Plastic Cotter Pin)

    I'm trying to determine what would be a suitable material to make this item which function likes a plastic cotter pin Part Description: ~0.25"OD x 1" long cylinder (one at each end), connected by a 3/16"OD band How its Used: Insert one of the plastic cylinder into the hole located on the shaft...
  15. PressEquip

    Compress - ASME Sec VIII Div 1 - Appendix 2 Flange Stress Calculations

    Compress Question In the calculations Compress completes I believe Compress uses the following equation (Appendix 2 Notation) HG=Wm1-H (Where HG=gasket load) Why Doesn't it use HG=Max(Wa, Wm1, Wm2)-H which in some cases could be more conservative HG is then used to determine MG-> Mop...

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