The trolley track of the grab-type ship unloader used in the port is designed as a whole structure due to the large load and high load rate, that is, the trolley track of the front and rear beam parts is the whole track. This can make the trolley rarely pass the track joint during the running process, so that the trolley runs smoothly, reduces the vibration and impact load to make the equipment run smoothly and prolong the service life of the related equipment. When the company was welding the rails, it tried aluminum heat welding and achieved good results by setting strict technical measures.
1. Principle of aluminum heat welding
The principle of aluminum heat welding is to use a more active metal to reduce the less active metal from its oxide. Because aluminum has a strong chemical affinity with oxygen at a sufficiently high temperature, it can take oxygen from many metal oxides, and restore the metal, while releasing a large amount of heat, the temperature can reach 2500 ~ 3500 ° C, Thereby these metals become liquid.
Rail aluminum heat welding is to place the aluminum hot flux in a special crucible, and use a high temperature match to ignite the aluminothermic reaction. At the same time as a large amount of heat is released during the reaction, the molten steel used for filling the weld is produced. The A 2 O 3 produced by the reaction is a slag floating on the surface because its density is less than that of molten steel. In a short period of time, the molten steel is filled with the sand mold, and the aluminum hot molten steel itself acts as a filler metal, which is crystallized and cooled together with the molten steel rail to achieve the purpose of welding the steel rail (see Fig. 1).
Blasting Glass Beads,Glass beads are used for blasting and polishing purposes, for cleaning the moulds for forging, casting , glass, rubber, etc., for removing of the tensile stress and increasing and improvement of the corrosion resistance and fatigue life of the component such as aircraft engine turbine blades, haft, landing gear, springs etc., for decorative finishing of the component surfaces, etc.It is used for cleaning the turbine, blade and axle of the airplane engine.
Glass bead for jetting has the features of chemical stability, high mechanical intensity and hardness. They can be jetted onto the object surface with compressed air and can be used on compress glass, rubber, plastic, moulds with metal casting or compressing. The jetting balls would help reduce elasticity of the surface materials and increase wearing capacity.
-Appearance: colorless transparent sphere, rounded and smooth, no obvious bubbles or impurities
-Usage:
1. used for the metal cleaning and polishing and keep the precision
2. also used for machinery sand blasting,enhancing the surface hardness.
3 .Used for reflective road marking paint glass beads.
ADVANTAGES:
-- Clean and smooth.
-- High mechanical intensity, hardness, flexibility
-- High purity and good quality meet the international standard.
-- Stable chemistry property, not pollute the metal processed.
-- Low breakdown rate, Lower disposal & maintenance costs
Blasting Glass Beads
Shot Peening Shot Blasting Glass Beads, Abrasive Polishing Sand Blasting Glass Beads, Blasting Material Shot Blasting Glass Beads, Sandblasting Surface Blasting Glass Beads
YONGQING BAILUYUAN GLASS PRODUCTS CO.,LTD , http://www.blyglassbeads.com