Roll bending machine handles small-radii bending of abrasion-resistant plate
Esco Corp., Portland, Ore., has a long history of developing machinery for mining, construction, and other industrial purposes. In keeping with industry preferences—among them a continuously growing preference for durability with
lightness—Esco has been making excavator buckets out of increasingly sturdy
variants of steel.
Among these is abrasion-resistant plate, also known as Hardox. With its extremely high yield strength of 1,250N/mm;, this material is five times tougher
than regular steel plate. While this toughness gives the abrasion-resistant plate
its durability, it also makes the material exceedingly di;icult to bend, especially
through small radii.
For 25 years the company successfully fabricated the material on its exist-
ing equipment. But when faced with making smaller machine parts from thick,
The purchase of a larger machine also would allow the company to form
thicker plates in-house that previously were being formed by an outside vendor.
The company contacted Sweden-based SweBend, which recommended a PB4-
18-6 four-roll machine to handle the complex bending radii and accurately perform the required bending in one pass. The machine was sold and delivered by
Trilogy Machinery Inc., SweBend’s representative for North America.
The dedicated, smaller-diameter top roll handles small bending radii, and the
prebending power and torque surpass comparable machines currently on the
market, according to the manufacturer. The machine also is equipped with a
powered infeed table.
The plate bending machine features SweBend’s proprietary CNC Type- 7 Gold
system, an intuitive human-machine interface (HMI) to help increase the speed,
accuracy, and repeatability of Esco’s mass production tasks. The HMI o;ers
8-axis controls, parallel control of side rolls, and electronic pressure control of
the central roll; allows interpolation of one side roll at a time; and can receive
remote diagnostics and regular so;ware upgrades.
4610 Mercedes Drive
Belcamp, MD 21017
Sims Steel, a metal service center in Lindenhurst, N. Y., keeps more than 2,000
tons of metal in its inventory at any one time. The company strives to cut any
metal to any spec in a very short time. Its No. 1 goal is to react quickly and get
the metal cut and sent as rapidly as possible.
Metal service center reaches goal of fast, trouble-free cutting with plasma machine
The company was struggling to meet this goal because of poor performance
and frequent downtime with its old plasma cutting table. The plasma cut is crucial to the operation of almost all the company’s work, as it’s nearly always the
first stage in the fabrication process. With the table not performing, work was
stacking up, and production was severely compromised.
Owner Bill Sims knew he needed to replace his CNC plasma cutting table and so
began researching various manufacturers. He decided on the Swi;-Cut PRO 510
XP, which seemed like it could withstand almost constant use. He wasn’t wrong,
and the company has found the machine to deliver excellent cut quality and
much improved reliability.
The table runs all day every day, cutting heavy, 1;;;-inch-thick plate with accuracy and precision and without problems.
Swift-Cut Automation Ltd.
1 Lancaster Park
East Staffordshire, England DE13 9PD
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