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nubbin    
n. 小瘤,小片,玉蜀黍发育不良的穗

小瘤,小片,玉蜀黍发育不良的穗

nubbin
n 1: a small nub (especially an undeveloped fruit or ear of
corn)

Nubbin \Nub"bin\, n.
A small or imperfect ear of maize. [Colloq. U. S.]
[1913 Webster]


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  • Nubbin - Eng-Tips
    A nubbin is just a small tooth obtained by machining on the joint contact area of a flange This is a very detailed issue and is normally specified by joint manufacturers for use with specific types of joints You should find more in a good catalog or site of a joint manufacturer
  • Nubbins | Eng-Tips
    The conclusion was flanges without nubbin sealed better and the cost of machining off the nubbin is justified by the increase in sealing efficiency
  • Nubbin on a Body Flange - Eng-Tips
    What drives the requirement for a Nubbin on a Heat Exchanger Shell Flange?
  • Tema Type R, confined gaskets, and nubbins | Eng-Tips
    TEMA allows the use of any desired facing, including the described nubbin I generally avoid them except with flat metal gaskets, but that's personal preference
  • Effective Gasket Width in ASME VIII-1 App2 Calcs | Eng-Tips
    Hello there I am trying to do the calculations in ASME VIII-1 App 2, however, I do not understand how to calculate "N" (based upon the possible contact width of the gasket) On what aspect of the gasket do we base it : the sealing element of the gasket or the actual surface contact of the
  • ASME B16. 5 Class 600 Flange Face - Min Raised Face? | Eng-Tips
    However, a google search on "nubbin +flange" returned around 550 hits so you will hopefully find some guidance For what its worth, the nubbins i had machined off were typically around 1 8" wide x 1 16" raised off the face and were used for double jacketed gasket applications
  • Appendix 2 Flange Calculations with Nubbins - Eng-Tips
    Two existing girth flanges are mated together One flange has a nubbin 1 64” high and 1 8” wide The gasket used between the flanges is DJAF iron, that is 1 2” wide Question: When considering the facing on the flanges as Type 2 (per Table 2-5 2, from Sec VIII, Div 1, Appendix 2), the joint
  • Specify tongue and groove gasket seating width - Eng-Tips
    What the Code calls a nubbin, a narrow raised area on the flange gasket seating face, is often used with flat solid metal gaskets to reduce the seating load and required bolting The Nmin calculation is not part of the Code, but some handbooks, specifications, and software perform it and select the N based on that
  • Raised Face Flange compared to Flat Face Flange | Eng-Tips
    Hi I'm trying to compare the dimensions of a CL150 raised face weld neck flange to a CL150 flat face weld neck flange As I am not very familiar with flanges, I am not sure if the dimensions of the two types are different (ie inside outside diameter, hub length, bolt circle diameter, flange
  • What ASME section covers in-service repairs and alterations?
    The in-service repairs of pressure retaining items does NOT fall under ASME Boiler and Pressure Vessel (B PV) ASME B PV Code is a construction code, not an in-service inspection or repair code In -service inspection, repair and alteration activities are either governed by API (petrochemical) or by the National Board Inspection Code (NBIC) NB-23 You should first determine what the





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