What are Forged Hollow Bars?
Forged Hollow Bars are versatile materials for a variety of purposes. Typically made of carbon steel or stainless steel, these bars are shaped to form a hollow tube using rolling plates or welding seams. Forged Hollow Bars can be used in many applications, such as oil and gas applications, refrigeration, and the petrochemical industry.
Hollow bars can be made from almost any type of material, and are much cheaper than tubes. The process of creating them varies, depending on the desired thickness and tolerances. In some cases, a piercing method is used to remove excess material. The final product is then finished with a process known as annealing.
What is the Process of Making Forged Hollow Bars?
The process for making forged hollow bars starts with a metal slug called an extrusion billet. This metal slug is used as the stock for extrusion. Extrusion produces a central oxide-lined discontinuity that flows into the center of the bar. The process of expanding is another step that increases diameter and reduces wall thickness. The process is done on a mandrel. Then the metal is forced to flow through a die orifice. The metal flows through this orifice, and backward extrusion follows the contour of the punch or moving forming tool.
There are many types of forging processes. One of the most common is thermal forging, which uses a controlled atmosphere or vacuum to prevent oxidation of the metal. Another type of forging is called impact forging. This type of forging results in a section that is less than 16 sq in. It has a symmetrical cross section, and the distance between parallel faces is generally three to eight inches.
What are the Uses of Forged Hollow Bars?
Hollow bars are commonly used in a variety of applications. Some are made of stainless steel or bronze. These bars are hollow and require high internal pressures to be used for pumping fluids. However, there are several other types of hollow bars available. Below are some of their most popular uses.
Stainless Steel Hollow Bars are very durable and strong. They can be cut and welded to create different shapes. Their central bore runs the length of the bar. They are forged using the same process as seamless tubes and have improved mechanical properties. Hollow bars also offer good shape consistency and dimensional tolerances. In addition, stainless steel hollow bars are more durable than their solid counterparts. In addition to being more resistant to corrosion and rust, they have excellent heat and corrosion resistance.
Forged tool steel hollow bars are manufactured by forging over a mandrel, with deep drilling. These bars are used in the manufacture of rotary knives, multi-groove knives, and anvils. They are typically made of 1.2390 steel, although other steel grades are available on request. Forged hollow bars are typically supplied with a finished outer surface. Forged Hollow Bars are available in diameters up to 680 mm and wall thicknesses up to 60 mm. They can be as long as four meters long, which makes them useful for making rotary knives.
The dimensional tolerance of a hollow bar is better than that of a solid one, but the dimensional tolerance is more difficult to achieve in a tube. The welding process has to be done carefully to ensure dimensional accuracy. In addition, the thickness of the hollow bar will be critical to the strength of the device, so the quality of welding should be very high.
