Forged Cylinders, Sleeves and Blind Hole Cylinders
A forged cylinder is an open die forging with an Outside Diameter (OD), an Inside Diameter (ID), and a Wall thickness where the wall thickness exceeds the wall thickness of standard pipe. In forging, solid cylinders without an ID are generally referred to as round bars. Cylinders can have one OD dimension, or several OD dimensions (step cylinder). Cylinders and also have internal steps in the ID. Blind cylinders, or blind-end cylinders, are forgings without an ID that carries through the entire length of the part. Cylinders can be purchased to produce rings by cutting off ring segments from the length of the cylinder. This may be less expensive than seamless rolled rings, depending on how the ID was created – through a ring rolling process or by punching out the ID of a hot forging.
Alloys Used To Forge Cylinders
Carbon steel – Alloy steel – Stainless steel – Titanium – Nickel – Aluminum – Tool steel
Sleeves are cylinders where the length does not exceed the OD and is produced by punching out the ID during hot forging. These may also be referred to as rings but they generally have a thinner wall of 2 inches (5.8 cm) or less. The maximum length of forged sleeves, forged cylinders and blind cylinders is restricted by the wall thickness and outside diameter. If the ratios exceed tolerances, the cylinder can either collapse in on itself or take on a whiskey barrel shape where the center begins to bow outward during the forging process.
Sleeves and cylinders, including blind-end cylinders, can be manufactured in carbon, alloy, and stainless steel with a maximum diameter of 84 inches with a maximum length of 108 inches. When forged in nickel or super alloys, the maximum diameter is 50 inches with a maximum length of 65 inches. In aluminum, the max diameter is 72 inches with a maximum length of 96 inches. With titanium, the maximum diameter is 52 inches and a maximum length of 65 inches. Successful production of forged cylinders, sleeves, and blind-end cylinders may be achieved depending upon the specification and end-use parameters of the part.
Common Specifications For Cylinders, Blind-end Cylinders, And Sleeves
ASTM A182, ASTM A276, ASTM A484, UNS S31803, UNS S32205, UNS S32550, UNS S32760, ASTM A668, API 6A, API 6D, as well as various AMS and SAE industry standards.
Industries that use cylinders, sleeves, and blind end cylinders include agriculture, pulp and paper, machinery builders, mining, tunnel boring, oil and gas exploration, refineries, shipbuilding, defense, turbine, chemical, petroleum, pressure vessel, valve, pump, hydro, tidal, and wind energy. Plants that use cylinders, blind-end cylinders, and sleeves include paper processing, oil, sugar, fertilizer, flour, cement, and similar refineries for liquid or powdered products.
All Metals & Forge Group takes great pride in maintaining one of the most stringent ISO9001, AS9100 quality systems in the open die forging and seamless rolled ring industry. It begins with learning the customer’s end use, required forging surface condition, mechanical properties of the specified material and alloy, forged shape, heat treatment, delivery need, and competitive price, coupled with forging soundness proven by ultrasonic testing, and care in packing goods to arrive in pristine condition at the customer’s desired location. Every step is monitored by the quality system at AMFG and continuously improved.
AMFG performs rough machining to within 3mm of finish dimensions to reduce the CNC cost at the customer’s machine shop for all the forged shapes the company produces. The rough machine surface condition is 250 RMS so that proper quality testing can be performed on each part – the AMFG standard.
The company can perform finish machining to within .001 of an inch for final tolerance and 64 or 32 RMS surface finish. This level of quality and precision is unique in an industry where other company’s parts are often delivered black, as forged, or with a rough machined surface of 500 RMS without the internal or external steps and dimensions to reduce machining costs.
From inquiry to invoice, All Metals & Forge Group quality is managed and not assumed. Whether the need is for one part, an entire project, or a production run, AMFG delivers.
U.S. 1 (973) 276-5000 • 1 (800) 600-9290 • Canada 1 (416) 363-2244
Fax: 1 (973) 276-5050 • Sales@Steelforge.com
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In the U.S. 1 (973) 276-5000 / 1 (800) 600-9290.
In Canada 1 (416) 363-2244.
Email us at sales@steelforge.com.
