On June 8, 2012, the inspector of the Jiugang Special Equipment Testing Center in the comprehensive inspection of a 20m3 gas storage tank of Jiuquan Steel, found the container leg branch There is a visible crack on the painted surface of the welded joint between the seat and the container casing, and visible cracks appear on the painted surface of the same portion of the four legs of the container. It was decided to use an angle grinder to polish the cracked part of the paint for further inspection. After the paint is polished and removed, the metallic luster is not completely exposed. The entire fillet weld welded to the leg and the container shell has intermittent white soft material, which is carefully identified as a putty for architectural decoration. After continuing to enlarge the sanding area, it was found that there was a visible crack at the lower end of the fillet weld welded to the container shell and the crack was extended to the angled leg portion, and the crack length was about 12 mm (see). Similar cracks exist in all four legs. Li Office; 1〗 〖Generation MS! The leg support of the container has a phenomenon of cutting corners during the welding process: the fillet weld at the welded joint between the leg and the container shell is not filled, and the surface is painted with the putty. Before the container is put into use, the container is in a normal temperature state, and the inside of the container is not under pressure, and the boundary between the putty and the metal joint surface on the surface is hardly found after being covered by the paint. When the container is put into use, due to the increase of working temperature and working pressure, the filled putty and the coefficient of expansion of the metal are different, so that additional stress is generated at the joint surface, and the vibration under the pressure caused by the pressure of the container causes the stress at the joint surface. Released, causing local cracking of the paint overlying the surface to reveal visually visible cracks in the paint surface. S history leg 宓 é‚ é‚ é‚ åŽŸå› ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡ ç‡Thickness (the height of the fillet weld of the bearing should be up to 1mm.) This inspection found that the container was filled with a putty instead of the weld metal. This inferior original manufacturing defect was given to the late investment. The container used has buried a safety hazard. The main reasons for the cracks in the analysis are as follows: 1) the fillet welds of the legs are not filled (filled with putty), the effective bearing area is reduced, the support force distribution is uneven, and it becomes a weak part; 2) The lower end of the fillet weld is only welded a little. The weld is not filled up at the upper part of the weld, so that the weld is not continuous and the stress concentration is serious. 3) The angle of the angle leg support is not enough and the strength is not up to the requirement. At the 4th visit, the inspection agency issued a written notice of rectification notice to the user in the process of comprehensive inspection of the container. 2) The four legs of the container shall be re-welded and repaired by the unit in contact with the maintenance of the pressure vessel, and passed the inspection; 3) After the rectification is passed, the inspection agency shall carry out on-site inspection and confirmation, and then carry out the safety status rating. , issued a comprehensive inspection report. 5 In the process of comprehensive inspection of pressure vessels, it is necessary to carry out detailed and comprehensive inspection of the easily neglected inspection items of the support of the container. Interlock floor tiles PP Court Tiles,Outdoor PP Court Tiles,PP Court Tiles For Sports Flooring,PP Interlocking Court Tiles Shijiazhuang Enlio Sports Goods Co., Ltd. , https://www.enliosports.com
Detailed Description
1)Resilient surface for high impact sports
2)Extreme durability and consistent performance for life of court
3)Anti Slip Surface
4)Special design for water drainage
5)Easy to install(no adhesive required)
6)Easy access to base beneath
7)Easy to maintenance
8)Special manufacturing process reduces smell
9)Non-fade
Applications:
1)Basketball Sport Court
2)Volleyball Sport Court
3)Tennis Sport Court
4)Futsal Sport Court
5)Handball Sport Court
6)Indoor Gymnasium
7)Garage
Color Chart:
Green Black, Sky Blue,Red,Gray
Brand
Enlio