This paper presents some concrete practice of the technical tests performed by the authors during these years, which include almost all the safety performance tests of the imported CO, cylinders. Some differences betw...This paper presents some concrete practice of the technical tests performed by the authors during these years, which include almost all the safety performance tests of the imported CO, cylinders. Some differences between the national standard GBl1640- 89 and the external standards in these technical tests are also pointed out. It provides reference to the further perfection of the safety performance test standard of aluminum gas cylinders.展开更多
The material property test of the shells, heads and screws of these ovens, the ultrasonic test, the hydraulic test and the strength calculation were made, the results meet the require ments of the design and the safet...The material property test of the shells, heads and screws of these ovens, the ultrasonic test, the hydraulic test and the strength calculation were made, the results meet the require ments of the design and the safety use as well as the relevant standards. These ovens can be used safely in working展开更多
ased on the inspection in site,the material analysis (the chemical composition and metallurgical microstructure) and the strength calculation of the heat exchangers flat side vessel,it is concluded that the failure ...ased on the inspection in site,the material analysis (the chemical composition and metallurgical microstructure) and the strength calculation of the heat exchangers flat side vessel,it is concluded that the failure of the vessel results from the design thinkness inadequacy,the welding procedures mistake and the defects in the welding.展开更多
文摘This paper presents some concrete practice of the technical tests performed by the authors during these years, which include almost all the safety performance tests of the imported CO, cylinders. Some differences between the national standard GBl1640- 89 and the external standards in these technical tests are also pointed out. It provides reference to the further perfection of the safety performance test standard of aluminum gas cylinders.
文摘The material property test of the shells, heads and screws of these ovens, the ultrasonic test, the hydraulic test and the strength calculation were made, the results meet the require ments of the design and the safety use as well as the relevant standards. These ovens can be used safely in working
文摘ased on the inspection in site,the material analysis (the chemical composition and metallurgical microstructure) and the strength calculation of the heat exchangers flat side vessel,it is concluded that the failure of the vessel results from the design thinkness inadequacy,the welding procedures mistake and the defects in the welding.
