4 results about "Spray forming" patented technology

The present application belongs to the technical field of metal material processing, and relates to a densification process for spray forming high-strength aluminum alloy. After large deformation densification treatment of the spray forming ingot, subsequent solid solution treatment and aging treatment are carried out. The hot and force coupling is used to close the pores through plastic deformation and diffusion. The semi-finished product with excellent structure and density is obtained through large extrusion ratio or large deformation forging, the advantages of rapid solidification of spray forming are retained, the material is further strengthened and toughened through thermal mechanical treatment, the cost is reduced, the grain is refined, the comprehensive mechanical properties are improved, the internal loose defects of the high-strength aluminum alloy ingot prepared by spray forming are reduced, and finally the aluminum alloy material with tensile strength > 800 MPa and density > 99% is obtained. The applicable alloy composition is as follows: Cu 1.4-1.8%, Mg 2.2-2.6%, Zn 10.0-12.0%, Mn 0.02-0.05%, Zr 0.10-0.20%, Ti 0.02-0.05%, impurity element Si <= 0.10%, Fe <= 0.12%, other impurities <= 0.05% in total, <= 0.15% in total, and the balance is Al.

The utility model discloses a spray forming steel surface hardening post -treatment device, it includes work table, clamping assembly and cleaning component, the top fixed connection of work table has the guide, the output fixed connection of electric telescopic handle has clamping block, the cleaning component includes rotary disc, sliding support frame and motor, the sliding support frame slides on the guide, the inner wall fixed connection of rotary disc has damping rod, one side fixed connection of damping rod has brush, through above -mentioned structure, through the clamping assembly steady fixation work piece of four corners distribution, the compound motion of rotary disc rotation and sliding support frame horizontal movement in combination cleaning component, drive its inside circumference uniform distribution, have the brush close work piece surface of elasticity, and ensure brush rotation axis and work piece center axis alignment, have promoted the evenness and adaptability of cleaning action to work piece surface, effectively avoided the cleaning dead angle or uneven force.

The application discloses a homogenization process for super-high-strength aluminum alloy based on a pore evolution and thermal coupling simulation model and belongs to the technical field of metal heat treatment. In view of the problems of poor plasticity, high porosity and difficult organization regulation of a large-size super-high-strength aluminum alloy ingot prepared by spray forming, the application adopts a three-stage ladder homogenization, hot compression densification, thermal coupling simulation and two-stage solid solution and aging integrated process, establishes a quantitative model coupled with an Arrhenius constitutive equation, dynamic recrystallization and pore evolution, realizes the cooperative regulation of coarse precipitated phase dissolution, pore closure and organization refinement, shortens the homogenization cycle by more than 30%, reduces the residual porosity to less than 0.3%, increases the elongation by more than 50%, and is stable and excellent in mechanical properties. The simulation precision R is greater than or equal to 0.95, and the application is suitable for the preparation of large-size super-high-strength aluminum alloy components.

This invention discloses a heat treatment method for spray-formed aluminum-lithium alloys containing high lithium (Sc), comprising the following steps: Step 1: placing the spray-formed high-lithium (Sc) aluminum-lithium alloy ingot in a vacuum heat treatment furnace; Step 2: raising the furnace temperature from room temperature to 470-485℃ at a first heating rate, maintaining a core-to-surface temperature difference of less than or equal to 15℃ during the heating process; Step 3: holding the ingot at 470-485℃; Step 4: raising the furnace temperature to 495-500℃ at a second heating rate; Step 5: performing a two-stage holding treatment at 495-508℃; Step 6: progressively cooling the high-lithium (Sc) aluminum-lithium alloy ingot after the holding period. This invention solves the problems of poor alloy toughness and easy cracking during processing caused by low-melting-point phases, avoids abnormal phase coarsening caused by excessive diffusion of Sc, and significantly improves the overall rationality and stability of the phase structure.