2014年12月17日星期三

Plastic processing technology and titanium Titanium's direction


Titanium plastic processing industry is a high energy consumption industries, hot rolling, annealing and heat treatment operations require higher energy consumption. Reduce energy consumption in the production of grade 1 titanium wire processing, help to reduce the cost and energy savings. Titanium way to solve the problem of high energy consumption in industrial production mainly rely on technological progress, improved technology, the development of energy-efficient technology, the development of automatic control technology, the development of energy-saving technologies titanium processing. Titanium plastic processing technology to achieve large-scale and continuous production process mechanization and automation, the process uses computer-controlled operation, in order to improve labor productivity. Large foreign titanium forgings overall use of 45kt or 75kt forging hydraulic press repression.
Plastic processing titanium and titanium alloys have large deformation resistance, poor room temperature ductility, yield strength and ultimate strength ratio is high, big rebound, notch sensitivity, deformation process easy and die bonding, heating time and easy absorption of harmful gases and other characteristics. Titanium plastic working than titanium, copper difficult. Titanium and titanium alloys processing must consider these characteristics thereof. Titanium and seamless titanium tube alloys using plastic processing, processing size is not limited, but also to mass production. Titanium processing plastic processing is the dominant approach, most of titanium products are produced using this method.
Currently, the traditional method of processing a titanium material mainly plastic processing, three methods of casting and powder metallurgy. Plastic machining process for titanium sponge titanium is cast into ingots, and then processed into titanium. The plastic working method comprising forging, rolling, extrusion, drawing, punching, spinning, etc., through which plastic working method may be processed into a variety of titanium ingot shapes and sizes of plates, tapes, ribbons, foils, tubes, rods, type, wire, forgings and stampings and other products.
Energy saving
From titanium and titanium alloy ingots to finished parts, the finished product was only 10% -20%, therefore, recycling residual titanium and its alloys become lower costs and expand critical applications. Titanium and titanium grade 2 sheet residual waste sources is very wide, titanium scrap titanium ingot produced (cut head, trimming and picking dander) about 5%; titanium processing timber residues generated (odd bits and scraps) accounted for about 40% ~ 60%; machined from titanium to titanium products produced residual titanium (feed head, corner crumbs) about 50% to 75%; waste is also a source of titanium products.
Due to a large amount of residual titanium scrap, utilization promising. Therefore, some countries have established a special scrap metal recycling companies, specializing in the comprehensive utilization of waste residue of titanium, using special equipment and technology, large-scale, highly automated engaged residual titanium scrap recycling.
Recycling of waste in the residual titanium, in particular to strengthen the management of residual titanium scrap, do not let the waste residual titanium mixed with varying degrees of oxidation. It is easy to be processed separately according to different types of residual titanium scrap following four cases:
(1) uncontaminated residual titanium, including processed odd bits and titanium scrap, a large quantity of good quality, you should try to add as titanium ingot melting material, doped titanium sponge titanium blocks squeezed into use, can reduce processing costs;
(2) Waste titanium sponge and titanium scrap massive head, different titanium scrap, its purity and composition, respectively ilmenite industry as alloying additions, or as raw material for the preparation of titanium powder;
(3) titanium powder and titanium powder endures, as the fireworks industry should knock agent, but also as a preparation of the aluminum industry, additives and titanium powder metallurgy products, raw materials;
(4) mixing or impurities of titanium shavings and waste can be processed into high-ilmenite titanium block, such as 70 ilmenite (titanium 70%). With the increase of ilmenite additives industry demand for high-titanium alloy to titanium scrap as the main raw material of high-titanium alloy, much of the market. Currently titanium scrap as raw material to produce high ilmenite million tons annual output has reached around the world.

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