Gas Phase Heat Treatment of Metals

Chartered Metal Industries Toolroom in Singapore produces a wide range of standard and customized products to support manufacturers in the metal industries. Their production includes high-volume, batch-run precision parts, prototype components, subassemblies, tooling, fixtures, and gauges.

The hardening, carburizing, and nitrocarburizing of steel are heat treatment processes usually carried out in baths of molten salts, such as nitrites, nitrates, carbonates, cyanides, chlorides, or caustics. The combination of chemicals and high temperature means that there are risks of explosion, burns, and poisoning. Environmental problems arise from the resulting vapors and the removal, transport, and disposal of the toxic salts. Disposal of cyanide salt costs 2007 USD 4300/t. Neutralization27 of quench water, oil, cleaning water and washing water should be carried out before discharge to the sewer, but is not always carried out. Off-gases can be cleaned by passing the exhaust gases through a chemical scrubber, although this also is not always done.

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DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

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