The application of microprocessor technology has long been expected to move out of the automotive world into heavy-duty engines and equipment, and now the first results of that technology are beginning to be felt in the industrial engine-powered equipment world."With electrically driven accessories, we have the ability to provide only the flow, pressure or power highspeedprecisiondrillpress required to match actual operating conditions. By continuously adjusting to different operating modes, there are a number of control features and opportunities available," said David Orr, commercial manager of Caterpillar Inc.''s More Electric Initiative highspeedprecisiondrillpress Program.

I started to turn away as I passed the SureFire booth where the salesman was demonstrating highspeedprecisiondrillpress a self-igniting Mapp gas-brazing torch (nothing new there). Then I noticed him put the tip of his finger on the operating torch tip. I stopped to see if he had an artificial hand, or at least to see if I could render first aid. It turns out that he was demonstrating the company''s new Cool Burning tip. Yes, impressive!I''ve always been curious about ultrasonic leak detectors, highspeedprecisiondrillpress especially when using them to locate refrigerant leaks. The Amprobe people had a new twist to demonstrate at the show. Their Model TMULD-300 has a parabolic reflector that mounts around the microphone tip. This, they say, accomplishes three objectives: It makes the pickup several times more sensitive; it takes the pickup more directional; and it reduces wind noise.

1. Mechanical properties of the base material. Tensile strength and yield strength of the weld metal should equal or exceed that of the base material. Ductility and toughness at low temperatures may also be important. High-temperature service requires resistance to creep. Shock loading requires impact resistance. In general, weld metal should match base-material properties.2. Composition of the base material.For stainless steels, low alloy steels, nickel and copper alloys, and materials that serve in corrosive atmospheres, chemical composition is important. Consider the possibility of electrochemical corrosion between base and weld metal of different compositions.

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