werner rohrs fasteners Germany werner rohrs models werner rohrs prices

werner rohrs fasteners are a type of fastener consisting of a head and a shank, used to tightly connect two parts (or components) with holes, forming a single unit. This type of connection is called a riveted joint, or riveting for short. It is a non-detachable connection. In riveting, the parts being joined are connected through the rivet's own deformation or an interference fit. There are many types of rivets, and they come in various forms. Rivets are typically used for joining objects together and usually require specific specialized tools for installation. Types of rivets include semi-round head rivets, flat cone head rivets, countersunk head rivets, semi-countersunk head rivets, flat head rivets, hollow rivets, tubular rivets, nameplate rivets, etc., to meet different operational requirements. They are mainly used in industries such as vehicles, ships, construction, machinery, and electronics for riveting various thin structural components.

werner rohrs fasteners history

The earliest metal deformable bodies were likely the ancestors of what we now know as rivets. For example, after successfully casting large bronze statues during the Bronze Age, Egyptians and Greeks used rivets to join the components together. In 1916, when H V White of the British Aircraft Manufacturing Company first obtained the patent for blind rivets capable of single-sided riveting, few people anticipated that such rivets would be applied so widely. From aerospace to office machines, electronic products, and sports field equipment, it can be said that these blind rivets have now become an effective and secure method of mechanical connection. Hollow rivets were invented for equipment purposes; the exact time of their invention is not entirely clear, but horse harnesses were invented between the 9th century and the 13th century AD. Riveted horse harnesses, like horseshoes with nails, liberated slaves from heavy labor. Rivets also spurred many important inventions, such as tongs used by coppersmiths and blacksmiths, and sheep shears.

werner rohrs fasteners introduction

Common types include R type rivets, fan rivets, blind rivets (break-stem rivets), tree-shaped rivets, semi-round head, flat head, semi-hollow rivets, solid rivets, countersunk head rivets, blind rivets, and hollow rivets. These typically connect the joined parts through their own deformation. Generally, cold riveting is used for sizes smaller than 11 mm, while hot riveting is used for larger sizes. However, there are exceptions; for instance, nameplates on certain locks are joined using the interference fit between the rivet and the lock body hole. R type plastic rivets, also known as expansion rivets, consist of a plastic male pin and a female collar. They do not require installation tools; the mounting base is placed in a smooth hole, and pressing the head causes the specially designed legs to expand and lock firmly onto the mounting surface. They are commonly used to connect plastic housings, lightweight sheets, insulating materials, circuit boards, or any other thin, lightweight materials, offering an aesthetic, practical, and easy-to-use solution.

werner rohrs fasteners standards

Standards for rivet product dimensions: Specifically stipulate basic product dimensions; for products with rivets, this includes basic rivet dimensions, rivet closing, shoulder distance, undercut and chamfer, and end dimensions of external rivet parts. Standards for technical conditions of fastener rivet products: Mainly include standards for product tolerances, mechanical properties, surface defects, surface treatment, and product testing, along with corresponding specific regulations. Standards for rivet product acceptance inspection, marking, and packaging: Specifically stipulate the acceptable quality level and sampling plan for spot checks during factory acceptance, as well as requirements for product marking methods and packaging. Standards for marking standard parts, fasteners, rivets, bolts, and screws: Specifically stipulate complete and simplified product marking methods. Other rivet standards: Such as standards for fastener terminology and fastener product weight.

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