BAIJIAN - Third party testing organization
Welding testing can be divided into destructive testing、 non-destructive testing、 and process testing according to different testing methods
1. Destructive testing
Destructive testing refers to directly sampling from the welded joints of a product and testing its various physical and chemical properties.
. The physical and chemical performance testing items of welded joints include mechanical performance testing、 chemical analysis and testing、 and metallographic and fracture analysis testing (1) Mechanical performance tests include tensile、 bending、 and flattening、 impact、 hardness、 fatigue、 toughness、 and other tests (2) Chemical analysis and testing include chemical composition analysis、 intergranular corrosion test、 and ferrite content determination test (3) Metallographic and fracture analysis tests include macroscopic microstructure analysis、 microstructure analysis、 and fracture inspection and analysis2. Non destructive testing
Non destructive testing is a testing method that uses various physical means to detect the density of welded joints without damaging the integrity of the welded structure.
. The non-destructive testing of welded structures includes the following content (1) Appearance inspection includes surface quality inspection of base materials、 welding materials、 bevels、 welds、 etc.、 as well as inspection of the appearance geometry and dimensions of finished or semi-finished products(2) There are many non-destructive testing methods、 and there are several common ones in practical applications:
1) Conventional non-destructive testing. This includes ultrasonic testing (UT)、 radiographic testing (RT)、 magnetic particle testing (MT)、 penetrant testing (PT)、 and height testing (ET) 2) Unusual non-destructive testing diagram. Including acoustic emission (AE) testing、 infrared testing、 Dong Yuanquan
(3) pressure testing and leakage testing for pressure equipment containers、 pipelines、 and certain other pressure components、 according to the corresponding technical general inspection and magnetic recording inspection According to the supervision regulations、 pressure tests should be conducted to verify the overall integrity and sealing of the structure and connecting joints. The pressure test includes 1) auxiliary pressure test、 mainly used for strength inspection、 including hydraulic test (mainly hydraulic test) and pneumatic test
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific、 fair、 and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsinspection and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered、 meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing、 with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle、 low cost、 and attentive service 7. Possess authoritative qualifications such as CMA、 CNAS、 CAL、 etc 8. The testing report is authoritative and effective、 and is generally used in China