[China Aluminum Industry] Annealing is a heat treatment process for the purpose of obtaining uniform composition, stable structure, or excellent process performance. According to different purposes and requirements, annealing can be divided into uniform annealing, recrystallization annealing, intermediate annealing and finished annealing.
(1) Homogenization Annealing Homogenization annealing is mainly performed in an aluminum alloy smelter. If the homogenization anneal cools too quickly, quenching effects may occur. In order to prevent the formation of the quenching effect, the furnace should be cooled after the annealing, or be stacked and cooled after being released.
(2) Recrystallization annealing Recrystallization annealing eliminates crystal defects and work hardening caused by various plastic deformations and improves product plasticity and toughness. The metal recrystallization process is a nucleation and nuclear growth process.
(3) Intermediate annealing In the process of cold deformation, when the deformation is large, one cold deformation is often difficult to achieve the required size of the shape of the industry. It is necessary to eliminate the work hardening and restore the plasticity by annealing to facilitate the processing deformation.
(4) Finished Annealing According to the characteristics of the alloy and the use requirements, the finish annealing can be divided into incomplete annealing (low temperature annealing) and completed annealing (high temperature annealing). Finished annealing is cold work hardening caused by cold plastic deformation, or has been partially quench-hardened alloy, heated to the temperature above the transformation point, heat preservation, so that the alloy into a single-phase solid solution, and then slowly cooled (usually with the furnace cooling ), to ensure that the solid solution decomposes and the diffusion process of the second phase aggregates proceeds.
Incomplete annealing is to heat the alloy to an appropriate temperature below the critical point of transformation to incubate, then cool it quickly (usually air-cooled), eliminate some of the cold hardening effect, so that the subsequent forming process with smaller deformation, or to improve At the same time, the plasticity must retain some of the strengthening effect obtained by cold deformation (semi-cold hardening).
The present invention provides a multifunctional pull faucet, comprising: a faucet body, a drawing part is provided at the water outlet port thereof, and the drawing part is connected to a main channel, wherein at least three are provided in the faucet body A branch channel, and the three branch channels are all connected to the main channel. A multifunctional pull faucet provided by the present invention, wherein the hot water channel, the cold water channel and the water purification channel (pure water channel) are all connected to the main channel , And the main channel is connected with the drawing part on the main body of the faucet, so that the drawing part can obtain the water quality (hot water, cold water, purified water or pure water) required by different users, thereby improving the user experience, and , By integrating the hot water channel, cold water channel and pure water channel (pure water channel) into the main channel, the internal structure of the faucet is simplified, and the production cost of the faucet is reduced..
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