Brass rods are rod-shaped objects made of copper and zinc alloys, named for their yellow color. Brass with a copper content of 56% to 68% has a melting point of 934 to 967 degrees. Brass has good mechanical properties and wear resistance, and can be used to manufacture precision instruments, ship parts, gun shells, auto parts, medical accessories, electrical accessories and various mechanical supporting materials, automobile synchronizer gear rings, Marine pumps, valves, structural parts, friction accessories, etc.
Brass rods with different zinc content will also have different colors. For example, if the zinc content is 18%-20%, it will be red-yellow, and if the zinc content is 20%-30%, it will be brown-yellow. In addition, brass has a unique sound when struck, so Eastern gongs, cymbals, bells, horns and other musical instruments, as well as Western brass instruments are all made of brass.
What are the specific work of quality control of brass rods?
1. The positioning device of the brass belt must be inspected and approved by the supervisor before concrete pouring.
2. The welding quality of the brass belt joints must be inspected. When the supervisor thinks it is necessary, the oil leakage inspection must be carried out. After passing the test, the oil pollution should be cleaned.
3. The formwork frame should be firmly erected, and the formwork on both sides of the sheet must be supported by “Ω” shape or other supporting structures to avoid misalignment and leakage of slurry due to the deformation of the formwork.
4. A special special template should be used at the brass belt to ensure that the sheet is firmly positioned and the joints are not leaking.
5. During the pouring process, avoid the accumulation of large aggregates in the brass belt, and vibrate carefully to ensure that the concrete at the joint is dense.
6. Arrange the pouring and vibrating procedures reasonably, and pay attention to avoid the concentration of bleeding at the brass belt.
7. During the concrete pouring process, the contractor should arrange special personnel to inspect and manage. The supervisor should strengthen the inspection of the parts, and if any deviation is found, the contractor should be instructed to correct it in time.
8. Pay attention to the backfilling and compaction of the concrete at the lower part of the brass belt, and reasonably adopt oblique insertion and horizontal vibration.
Post time: Jul-20-2022