Super alloy grades for tanks and rivet nuts

Elliptical Head Pressure vessels as filter tanks

Vast level elliptical head pressure vessels made from stainless steels are develop and designed for service at 100 psig a 230of following ASME code section 8 division 1 for treating as carbon filter tanks. The tank consists of different size nozzles, lifting nugs, pipe legs etc.

The materials used for constructing the tanks are stainless steel, Inconel, Hastelloy alloy, Monel and others.

Assembly with Rivet Nuts

Automakers are widely using hydroformed metal tubing in the automobile structures. As compare to stamped and welded metal components, hydroformed parts lightweight, control price and have greater stiffness to weight ratio.

Until the demand increases to connect other components to the structure with threaded fasteners. Tapping threads in the tube many not be probable because the material may not be sufficiently thick or durable. Self-clinching or weld nuts are not an option, as installation needs access to the reverse side of the metal.

Also called as the blind threaded inserts, rivet nuts offer strong fastening threads in thin panels. The fasteners were originally made decades ago.

Cage nuts are a possibility, but they require a square hole and are difficult to install. The rivet nuts are used in the different types of things. A rivet nut is a single piece internally threaded and counterbored tubular rivet is installed during the service completely from the single panel side. Similar to a traditional blind rivet, the rivet nut is developed on the blind side. The back side flange is big enough to prevent being drawn out in fact under conditions of eccentric load. As rivet nuts can be configured without accessing the panel sides, the fasteners are perfect for connecting components to housings, tubes or extrusions. The fasteners can be configured into metals, plastics and ceramics.

Rivet nut fasteners are constructed from steel, Monel and austenitic grade stainless steel 310/310S. The commonly used material is plated steel however you might specify stainless steel if you aim at corrosion. Stainless steel rivet nuts are usually used in solar panel structures and other outdoor systems.

A single fastener size can usually accommodate a different grip range. Rivet nuts are introduced with a different type of head styles. A wide front-side flange offers a wide load bearing surface. It reinforces the hole and avoids push-through. It is feasible to implement a sealant below the flange for weatherproof applications. A thick flange can treat as a space and offer additional push-out strength. Countersunk and low-profile heads ensure flush or near flush configuration. Wedges or knurls below the head are made to bite into the mating material and avoid the fastener from turning in the hole.

The wedge head is vast for soft materials. Although rivet nuts are annealed, so they are very soft. The wedges are not going to be perfect on the steel components.

Rivet nuts are also used in the different body styles. The standard rivet nut is cylindrical with a smooth surface however variations include splined, square, and hexagonal bodies. Many changes are all made to perform single thing- keep the fastener from turning in the hole, specifically in softer materials like aluminium. If they are not set simply perfect, round river nuts can roll in the hole at large torque levels, with a hex shaped fastener, there will not be a problem.