The solvate morphology of the plexiglass sample after etching with a small amount of solvent and a large amount of solvent. Observed at 1000 times, the fracture of the trace solvent silver streak has obvious corrosion streaks, and the fracture morphology of a large amount of solvent silver streaks is disorderly interlaced. It can be seen that there is no solvent silver streak in the microscopic morphology of the bullseye silver, so the possibility of silver streaks due to solvent corrosion can be ruled out, and it is concluded that the silver streaks are caused by stress. Analysis of the cause of the silver streak, the silver streaks of the local stress concentration portholes are concentrated in the bend of the glass edge, which is the location where the porthole is the most susceptible to stress concentration. During the porthole forming process, attention should be paid to the annealing temperature and time to improve the annealing process to ensure that the forming stress at the bend after annealing is completely released, reducing stress concentration. The material itself has poor resistance to silver streaks. YB-2 non-oriented plexiglass has poor resistance to silver streaks. Failure analysis of aircraft porthole silver streak failure analysis and prevention of processing, assembly, and use are prone to silver streaks or microcracks. The anti-silver grain ability of oriented plexiglass is far superior to non-oriented plexiglass of the same material. Non-oriented plexiglass is no longer used in the transparent parts of modern aircraft, and the portholes can be replaced with oriented plexiglass during later aircraft overhaul. The environmental conditions caused by the aging deterioration of the porthole glass in the use environment are complicated. In addition, YB-2 is a plasticized methacrylate plastic. As the storage or use time is prolonged, it is easy to cause the aging of the material to greatly reduce the glass. Anti-silver.
Vertical rolls
Description: Vertical
rolls or Edger Rolls for hot strip mill, hot plate mill, continuous hot strip
mill, heavy plate mill.
Material: Adamite,
high chromium iron, alloy cast iron, alloy cast steel or as per the customer`s
requirement.
Barrel Diameter:
1500mm maximum
Unit weight: 25mt/pc
Type: Single
rolls, double pouring cast rolls.
Casting: Static
casting, centrifugal casting.
Heat treatment: annealing,
normalizing, quenching, and tempering.
Vertical Rolls,Adamite Vertical Rolls,Alloy Cast Iron Vertical Rolls,Alloy Cast Steel Vertical Rolls Shijiazhuang BeiKeDeRui Metallurgical Science & Technology Co.,Ltd , https://www.bkdrtech.com
August 28, 2021