2014年4月28日星期一

molybdenum bar equipment and components for corrosion do

Another important use of tungsten, which is in rockets, missiles, spacecraft, and return-type nuclear reactors and molybdenum bar other important applications on the cutting-edge science. This is because the tungsten having excellent physical, mechanical, corrosion resistance and nuclear performance reasons. Such as tungsten alloy at 1900 ℃ high tungsten carbide ball is still large, and in such high temperatures, either steel or heat-resistant super alloys are melted into a liquid. Mainly used to manufacture various types of rocket engines without cooling throat; made ​​with molybdenum crucible infiltration silver tungsten nozzle can withstand temperatures above 3100 ℃ for various types of missiles and aircraft; tungsten fiber composite materials produced by the rocket nozzle, the ability of 3500 ℃ or higher; in the chemical industry, equipment and components for corrosion do; do lubricants, pigments, and various reactions.

2014年4月3日星期四

Symptoms of lack of trace elements molybdenum plant mainly in


Symptoms of lack of trace elements Kekai molybdenum bolts plant mainly in
1 small plant, susceptible pest damage .
2 , leaves green, between the veins of old leaves show chlorosis or thickening was waxy . Between the veins swollen to bend down . Such as tomato leaf curl upward to form the edge of the white spots and litter .
3 , nodules of leguminous crops are not developed .
4 , leguminous crops effectively reduce the number of branches and number of pods, seed weight decreased . Poor grain filling , delayed maturity , grain is not full . So crops in the seedling stage , flowering bud stage to the spraying of fertilizer Mo ( Ammonium ) 2 - 3 times, spraying is about 80-150 pounds per acre . Soybean seed filling stage to maturity requires the largest amount of molybdenum may be appropriate foliar spray to increase the yield and quality of soybeans.