Marine engineering equipment made of stainless steel, the chloride ions in seawater corrosion and microbial corrosion has been a world-recognized problem. Microbial corrosion and fouling problems foreign construction materials caused nearly a thousand billion each year to the country's economic losses and 30% In energy waste Shanghai sailed body. ocean engineering materials failure mechanisms and microbial corrosion protection technology has become a major issue in the field of ocean engineering solved.
If you can effectively suppress and kill the adhesion of metal material surface biofilm, can effectively alleviate or inhibit microbial corrosion. Therefore, the use of antibacterial stainless steel antibacterial properties and its inhibitory bacterial biofilm formation, thereby enhancing the anti-microbial corrosion of stainless steel, is a rich and innovative new ideas.
The research team has successfully developed an anti-bacterial microbial corrosion resistant duplex stainless steel (2205-Cu).
2205 is the marine environment under the most widely used duplex stainless steel, reported on marine bacteria cause corrosion of the 2205 failure of recent years has been wide attention from scholars. 2205-Cu such strong resistance to microbial corrosion antibacterial duplex stainless steel available to fill the gaps in the field of marine engineering antibacterial materials, the study results have important academic significance and practical value.
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9/15/2015
Global steel market is now fully downward trend
Since entering in September, the international steel (1925, 2.00, 0.10%) market increasingly weak international steel mid 72.91 points benchmark index fell 0.86% MoM week, fell 2.49 percent month on month (decline in the expansion).
Where: Sheet index 65.87 points, Zhou chain fell 0.86 percent, the monthly chain fell 2.46% (decline convergence); long products index 80.62 points, Zhou chain fell 0.93 percent, the monthly chain fell 3.03% (by the up to turn down); the Americas Index 81.77 point, Zhou chain fell 1.39 percent, the monthly chain fell 1.61% (decline in the expansion); the European index 71.63 points, Zhou chain fell 1.61 percent, the monthly chain fell 1.61% (decline enlarged); Asia index 71.39 points, Zhou chain fell 0.31 percent, It fell 3.36 percent month on month (by the up to turn down). Index seen running into the global steel market since September has now fully downward trend, the situation reassert severe. To this end, according to the operational state of international steel benchmark index, combined forecasting fundamentals, the recent adjustment of the global steel market will continue the trend.
Where: Sheet index 65.87 points, Zhou chain fell 0.86 percent, the monthly chain fell 2.46% (decline convergence); long products index 80.62 points, Zhou chain fell 0.93 percent, the monthly chain fell 3.03% (by the up to turn down); the Americas Index 81.77 point, Zhou chain fell 1.39 percent, the monthly chain fell 1.61% (decline in the expansion); the European index 71.63 points, Zhou chain fell 1.61 percent, the monthly chain fell 1.61% (decline enlarged); Asia index 71.39 points, Zhou chain fell 0.31 percent, It fell 3.36 percent month on month (by the up to turn down). Index seen running into the global steel market since September has now fully downward trend, the situation reassert severe. To this end, according to the operational state of international steel benchmark index, combined forecasting fundamentals, the recent adjustment of the global steel market will continue the trend.
9/14/2015
Titanium and other light magnesium aluminum alloy is the most promising future areas of new materials
During the second five, China will focus on the development of high-strength light alloy materials. The goal of the project is 2015, key product development of new alloys made a major breakthrough in the formation of high-end aluminum alloy 300,000 tons, 20,000 tons of high-end titanium alloy materials, high-strength magnesium alloy die-casting and profiles and sheet production capacity of 150,000 tons . 2014, is to achieve high-strength light alloy sprint in the project objectives, its achievements sprint worth the wait.
Titanium is an occupied an important position in modern high-end weapons light alloys.
According to statistics, China in recent years production of military aircraft airframe and engine together accounting for up to 25% by mass of titanium, titanium alloys and F-22 proportion is as high as 41%. Titanium metal due to its high strength, ductility, corrosion resistance, non-magnetic and other superior performance, are widely used in the aerospace, chemical, oil, electricity and so on.
In addition to titanium, lightweight alloy also include aluminum and magnesium alloys. Aluminum use the older, higher popularity and now, in cars, ships and other fields often.
The magnesium alloys are among the lightest practical metal quality, it is one of the most important new vehicle to achieve lightweight materials.
Titanium is an occupied an important position in modern high-end weapons light alloys.
According to statistics, China in recent years production of military aircraft airframe and engine together accounting for up to 25% by mass of titanium, titanium alloys and F-22 proportion is as high as 41%. Titanium metal due to its high strength, ductility, corrosion resistance, non-magnetic and other superior performance, are widely used in the aerospace, chemical, oil, electricity and so on.
In addition to titanium, lightweight alloy also include aluminum and magnesium alloys. Aluminum use the older, higher popularity and now, in cars, ships and other fields often.
The magnesium alloys are among the lightest practical metal quality, it is one of the most important new vehicle to achieve lightweight materials.
Indonesian tin exports expected next year between 5-6 million tons, 65,000 tons less than expected this year
Jakarta, Sept. 14 news, Indonesia tin Exporters Association (AETI) Jabin Sufianto president said on Monday that the country's tin exports expected next year between 50,000-60,000 tonnes, this year estimated that less than 65,000 tons.
Sufianto noted that the new export rules require tin exporter from November 1 to hold a "clean and clear" proof may hinder tin exports. He also said that next year LME three-month tin prices will hit at least $ 20,000 per ton.
Sufianto noted that the new export rules require tin exporter from November 1 to hold a "clean and clear" proof may hinder tin exports. He also said that next year LME three-month tin prices will hit at least $ 20,000 per ton.
9/13/2015
Implementation of construction steel price adjustment information
September 14 Nami (512 plants) Nami (512 plants) to Chengdu, Chongqing, construction steel (1929, -27.00, -1.38%) the exercise price adjustment based on 8 September in Chengdu, Chongqing area wire (2350 , 0.00, 0.00%) steel guide price adjustments, as follows:
1, wire prices down 40 yuan / ton, now HPB300Φ6.5 high line execution price is 2400 yuan / ton, HPB300Φ8-12 high wire exercise price of 2,300 yuan / ton.
2, rebar prices are down 30 yuan / ton, HRB400EΦ12-14 exercise price of 2,500 yuan / ton, HRB400EΦ16 exercise price of 2420 yuan / ton, HRB400EΦ18-25 exercise price of 2370 yuan / ton, HRB400EΦ28-32 strike price of 2500 yuan / ton; HRB500E HRB400E rebar price in the same size based on the increase 200 yuan / ton.
3, plate, screw the price down 20 yuan / ton, now HRB400E plate, screw Ф6 exercise price of 2570 yuan / ton, HRB400E plate, screw Ф8-12 exercise price of 2370 yuan / ton, the same specifications straightening material increase 100 yuan / ton.
Weighing more than are tax ex-factory price, the implementation date 14 September onwards.
1, wire prices down 40 yuan / ton, now HPB300Φ6.5 high line execution price is 2400 yuan / ton, HPB300Φ8-12 high wire exercise price of 2,300 yuan / ton.
2, rebar prices are down 30 yuan / ton, HRB400EΦ12-14 exercise price of 2,500 yuan / ton, HRB400EΦ16 exercise price of 2420 yuan / ton, HRB400EΦ18-25 exercise price of 2370 yuan / ton, HRB400EΦ28-32 strike price of 2500 yuan / ton; HRB500E HRB400E rebar price in the same size based on the increase 200 yuan / ton.
3, plate, screw the price down 20 yuan / ton, now HRB400E plate, screw Ф6 exercise price of 2570 yuan / ton, HRB400E plate, screw Ф8-12 exercise price of 2370 yuan / ton, the same specifications straightening material increase 100 yuan / ton.
Weighing more than are tax ex-factory price, the implementation date 14 September onwards.
The exports drop of South Korean steel caused domestic fears
September 7, South Korean Trade, Industry and Energy (MOTIE) Ministry convened senior officials including steel, shipbuilding and automotive industries together to discuss and solve the problem of sluggish exports in recent months.
MOTIE analysis pointed out that the steel (1929, -27.00, -1.38%) decline in exports was mainly due to the United States, China and Japan and other major export markets reduced demand. January to August this year, South Korea's steel exports to the US fell by 20.1 percent, steel exports to Japan fell 17.1 percent, steel exports to China fell by 10.9%. Moreover, the continued weakness in the prices of raw materials needed for steel caused by lower export unit price of steel is also an important reason.
Meanwhile, in August, the Korean shipbuilding industry's total exports also fell 51.5 percent up compared to last year. For the automotive industry, MOTIE believe their exports decline was mainly due to raw material prices and the recession in emerging economies. In addition, the impact of the depreciation of the yen, South Korean goods and competition is relatively weak commodity Japan automotive industry exports decline.
MOTIE analysis pointed out that the steel (1929, -27.00, -1.38%) decline in exports was mainly due to the United States, China and Japan and other major export markets reduced demand. January to August this year, South Korea's steel exports to the US fell by 20.1 percent, steel exports to Japan fell 17.1 percent, steel exports to China fell by 10.9%. Moreover, the continued weakness in the prices of raw materials needed for steel caused by lower export unit price of steel is also an important reason.
Meanwhile, in August, the Korean shipbuilding industry's total exports also fell 51.5 percent up compared to last year. For the automotive industry, MOTIE believe their exports decline was mainly due to raw material prices and the recession in emerging economies. In addition, the impact of the depreciation of the yen, South Korean goods and competition is relatively weak commodity Japan automotive industry exports decline.
9/10/2015
Application of titanium sheet and titanium alloys in the ship
From the actual findings speculated that the ship's legal life of Ti than steel, aluminum is much the captain, the actual life will be longer.
Titanium ship advantages:
1. Hull light. The density of titanium is 4.5g / cm3, smaller than Fe7.9g / cm3. But with Ti have the same size 2.5mm enough boat, hull made of titanium quality is FRP30%, 10% lighter than aluminum. Since titanium does not need to spray anti-rust paint surface ship, it also eliminates the need for quality coatings.
2. The speed increase. Since the boat light. The same shape of the ship, the ship's engine than titanium alloy and aluminum alloy boat engines smaller 15%. If you use the same engine, the speed can be increased by 15%. In addition, the ship and the water surface without direct contact with the coating, also reduces the coefficient of friction with the water, thereby increasing the speed of the boat.
3. fuel costs and reduce the amount of CO2 generated. Titanium boats and high speed light weight make the unit mass, a significant decline in unit fuel costs sail away. This is not just sail reduce funding. The prevention has become an international problem of global warming is very effective.
4.The corrosion resistance. Pt in seawater as titanium sheet as corrosion. So we do not need spraying anticorrosive coating. FRP though not rust. Difficult to remove. Corrosive aluminum boat, but also easily attached to marine life, it is difficult to remove. Therefore, FRP boats and Al alloy boat hull and bottom must be coated to prevent corrosion and paint adhesion of marine organisms.
5. Hulk recycling. FRP ship waste difficult to recycle. Waste can be recycled, environmentally friendly.
6. excellent stability. Titanium boat even in bad weather rarely appear vertical and horizontal shake.
7. noise, vibration small. Titanium boat bottom is 2.5mm titanium sheet . Very thin, do not worry about the vibration.
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