Today, titanium used in marine engineering has become one of the main fields of titanium civilian applications. As an emerging titanium civil market, marine engineering has developed rapidly in recent years. With the further intensification of the world energy crisis, countries around the world will invest a lot of manpower and material resources to mine the seabed. Petroleum resources and other mineral resources. With the increasing shortage of fresh water in the world, all coastal countries will use seawater to produce fresh water, and the competition for naval equipment among major military powers is becoming increasingly fierce, all of which are inseparable from titanium and titanium alloy materials. Therefore, the application of titanium and its alloys in marine engineering will become more and more extensive. It is expected that marine-related engineering is expected to become a large application market for titanium materials.
In addition, titanium is the material with the best anti-corrosion performance in seawater at room temperature among known materials, and it has good corrosion resistance even in polluted seawater, hot seawater (below 120°C), sea mud, and flowing seawater. When damaged to a certain extent, the surface oxide film or passivation film can quickly repair and recover by itself, and its corrosion resistance exceeds other metals. That is, in the ocean, titanium is almost incorrodible. Practice has also proved that no matter in the full immersion area, tidal range area, splash area or marine climate environment, the corrosion rate of titanium and titanium alloys in the three waters of the South China Sea, the North Sea, and the East China Sea for 16 years is almost close to zero. Therefore, the use of titanium alloy to manufacture ships can prolong the service life of the ship on the one hand, and on the other hand can reduce a series of costs incurred in the later protection treatment due to surface corrosion.
Offshore oil extraction equipment mainly includes oil production platforms and auxiliary equipment, and auxiliary equipment includes crude oil coolers, oil risers, pumps, valves, joints and fixtures, etc. A large number of titanium alloys are also used in foreign offshore oil exploration well logging instruments. Titanium and its alloys are corrosion-resistant in seawater and marine atmosphere, and have light specific gravity, high strength, impact resistance, non-magnetic, sound transmission, and small expansion coefficient. They are considered good ship materials. These devices are all in contact with media such as sulfide, ammonia and chlorine in seawater and crude oil.Titanium shell and tube heat exchangers use seawater as a cooling medium to cool the high-temperature gas/oil mixture extracted from oil wells. About 100 titanium heat exchangers are used on North Sea oilfield drilling platforms in the United States. The seawater pipeline system is an indispensable part of seabed oil exploitation. The seawater pipeline system is complex and has many diameter specifications. The selected materials are required to have Seawater corrosion resistance, high strength, and good fatigue performance can all be met by titanium materials. Pipes made of titanium alloys have significant advantages over traditional materials (carbon steel, stainless steel, copper alloys). Although the one-time investment cost of titanium alloy components is relatively high, one-time investment can meet the full-life use, and only simple maintenance is required during use, which saves a lot of repair and maintenance costs.
The application of titanium on ships has also attracted people's attention. The navies and shipbuilding industries of various countries also attach great importance to the research on the application of titanium on ships, and have developed many brands of titanium alloys for ships. Titanium and its alloys are widely used in ships, such as hull structural parts, deep-sea survey ships and submarine pressure shells, pipes, valves, rudders, shaft brackets, accessories, propellers and propellers in power drives Shafts, heat exchangers, coolers, hull sonar domes and more.
In addition to the applications in the above fields, titanium alloys can be processed by cold and hot forming, free forging, extrusion and welding, etc., and have good processing adaptability. Data research shows that titanium alloys do not have a brittle transition point in the impact toughness test in the range of -60 ° C to 20 ° C. In addition, compared with aluminum alloy and steel, titanium alloy has the best heat resistance, low temperature resistance and fracture toughness. Compared with commonly used materials such as steel, stainless steel, copper, aluminum, etc., the most prominent features of titanium are low density, high specific strength, and strong corrosion resistance. Sound transmission coefficient and excellent neutron radiation attenuation performance. In terms of plastic forming, casting, welding, etc., like other commonly used metal materials, it can be processed and formed by conventional methods.
All in all, due to its excellent characteristics, titanium metal materials have broad application prospects in various types of marine engineering. At the same time, there are many fields that can be expanded and used, and have wide applicability to various types of marine engineering.
Shaanxi Etermetal Co., Ltd. is a titanium materials supplier, which can provide high-quality products and services for Everbright users. At present, our company has sufficient inventory of various products and complete staffing for each position. Welcome to consult and cooperate!
