Hydrogen Carbon Steel

New Scale from Scaletron Makes Weighing Multiple Gas Cylinders at Once ...

Plumsteadville, PA (PRWEB) June 17, 2011

Scaletron Industries, Ltd., a manufacturer of corrosion resistant digital and mechanical scales, has announced the addition of a new Model 2003™ - 2006™ Ultra-Low Profile Multi-Cylinder Platform Scale , which is designed to weigh up to 12 gas cylinders simultaneously, to their line of quality scales. The 2003™ - 2006™ is available with various platform size widths to meet the needs of the fire protection and liquefied gas industries and also can be customized to fit specific applications.

"The Model 2003™ - 2006™ Multi-Cylinder Platform Scale was created for our customers who currently weigh multiple gas cylinders on separate scales,” says Edward Dougherty, president of Scaletron Industries, LTD. "This scale design provides a more economical and efficient method of weighing three to twelve gas cylinders on one low profile platform at the same time, with a maximum load capacity of 2500 pounds, depending on the platform size.” Model 2003™ - 2006™ Scale provides a means for measuring the weight of liquefied gas under pressure in order to determine a cylinder's content level.”

The 2003™ - 2006™ Multi-Cylinder Platform Scale offers excellent accuracy of ± 0.1% of capacity and allows users to monitor chemicals in either pounds or kilograms. To provide protection from corrosive chemicals, the electronics are housed in a NEMA 4X, UL approved enclosure.

Additionally, the 2003™ - 2006™ Scale can accommodate off center loads and features rugged steel construction protected by a corrosion resistant finish, solid ½ inch PVC decking for use in harsh environments, and an ultra-low profile platform designed to increase safety and ease of cylinder handling. It is designed for quick, frequent on and off loading of gas cylinders.

Options for the 2003™ - 2006™ Scale include modifiable set-up preferences such as additional wire cable, remote mounting of the indicator box up to 200 feet from the scale, and various upgrades of controller types.

The Model 2003™ - 2006™ Multi-Cylinder Platform Scale is designed to accurately measure weight of liquefied gases such as chlorine, sulfur dioxide, ammonia, hydrogen chloride and carbon dioxide packaged in cylinders up to 12" in diameter. Scaletron offers a full, 5 year warranty on the Model 2003™ - 2006™ and all other products.

The Model 2003™ - 2006™ Scale recently became available in May 2011, and is accessible for quote on Scaletron’s website. The site also features literature, drawings, OEM manuals, and bid specifications. For more information, please visit http://www.scaletronscales.com/2003-2006.html .

VACUUM CARBURIZING

Heat treatment with gas quenching has already been an established heat-treatment process for two or three decades in the field of full hardening. At first, it was limited to the hardening of high-alloyed tool steels whose alloy structure enabled them to be hardened satisfactorily with a rather slow gas cooling rate.

The enhanced quenching action achieved with gas pressures above 10 bar has allowed successful extension of gas quenching to the field of low alloyed tool steels, steels for hardening and tempering, antifriction-bearing steels, and case-hardening steels. The capability to carburize and gas-quench in vacuum furnace installations has provided the industry with a new, environmentally friendly case-hardening process.

Like plasma carburizing, vacuum carburizing can also be performed in a vacuum furnace system. Vacuum carburizing can be succinctly described by the following key points:

• Carburizing gas is propane.

• Pressure ranges up to 20 mbar (absolute).

• Temperature range is usually 900 to 1050°C, but higher temperatures are also possible.

Once the charge has been heated to the carburizing temperature under a neutral atmosphere (vacuum or nitrogen), propane is admitted into the evacuated heating chamber. Propane very rapidly undergoes 100% dissociation into more stable hydrocarbons and hydrogen. Carbon is also released and diffuses through the surface of the steel or component.

Vacuum carburizing is characterized by a high carbon mass flow rate, which carburizes the surface layer to near the carbon saturation limit within a short treatment time. In the subsequent diffusion phase, no more carburizing gas is fed in — rather the existing carbon diffuses farther into the steel in accordance with the diffusion law until the desired carbon profile has been attained.

In contrast to protective-gas carburizing, vacuum carburizing can be performed with substantially higher case carbon contents. The case carbon percentage is already over 1.3% after a short period of carburization and then is held at 1.4 to 1.5% at 930°C, which is about 0.2% higher than in protective-gas carburizing with a carbon level just below the sooting limit. The higher case carbon content in vacuum carburizing results in shortened treatment times, even at the same carburizing temperature. Raising the carburizing temperature results in a further considerable time savings.

Fractography-Microscopic Cracking Process

Gas purification

Effects of Hydrogen on Materials, Proceedings of the 2008 International Hydrogen Conference, September 7-10, 2008, Jackson Lake Lodge, Grand Teton National Park, Wyoming, USA

Hydrogen embrittlement of high carbon steel

The growth mechanism of cavities in hydrogen attack for carbon steel