Know More About Flange

Most Popular the proposed compact spring-loading design is related to a prior noncompact design in which one of the flanges of a joint is cut so that it acts somewhat like a leaf spring and the bolt-circle diameter of the flange is made considerably greater than the major diameter of the O ring so that the flange can bend elastically and its deflection is spread out over the annulus between the O ring and the bolt circle. In the proposed design, leaf springs with a thickness less than that of the flange would be formed in the bolt-circle region by cutting a combination of meridional (radial-axial) and annular slots in the flange, as shown in the figure. This design would afford the elasticity needed for spring loading, without need to make the bolt circle much larger than the O ring. When developing original component designs the opportunity presents itself to put as much forethought into what can be done to optimize items such as the part’s cost or life expectancy. However, an engineer can achieve both goals by designing for manufacturability. This achieves the most competitive part price for several reasons: Improved scrap rates, lower capital tooling costs and the use of the most suitable materials. Bringing all of these concepts together will ultimately produce a superior diaphragm having the greatest life-cycle potential. Several areas of importance would need to be discussed to offer a comprehensive guide to diaphragm design. Here, we will focus on those areas most important to manufacturability: Flange design, bead geometry, height-to-bore ratio and proper material selection. Flange design determines the success of the seal between diaphragm and hardware with two basic design options. With a flat/gasketed flange it is more difficult to control the compression of The material when compared to a beaded flange. Often, proper compression of flat-flanged parts can only be determined through trial and error while hardware design for beaded flanges is a Quantifiable value; To maintain a good seal that hardware should produce 20-30% volumetric compression of the diaphragm’s bead – higher compression will likely damage the part. Although it does not incorporate the use of a bead, a flat flange may include a series of small, concentric V-ribs (either on the hardware or on the diaphragm) to increase seal success. Molding V-ribs on a flat flange typically does not affect the part’s manufacturability and eliminates many of the quality issues related to beaded diaphragms. Bead geometry is very important not only in the functionality it provides as a seal, but also in how complex the manufacturing process becomes. During molding, a poorly designed bead Increases the potential for quality problems such as trapped air or flow/knit lines that affect seal compression and increase the scrap percentage. Some designs also make the parts more difficult To trim increasing scrap or tooling costs. Refer to the graphic below for several bead geometries and reasons for their successfulness. Height-to-Bore Ratio describes the relationship between the diameters of the convolution base to the overall convolution height. Typically, this ratio is set at a maximum of 1: 1. Although larger Ratios have been achieved before, it becomes much more difficult and relies heavily on a specific fabric style. Source: Globalfastenermarket. Com