Heat treatment process of aluminum and its alloys

Add one more Arabic numeral (called T×× state) after the T× status code, or add two Arabic numerals (called T××× state), which means that the product characteristics (such as mechanical properties, resistance Corrosion performance, etc.) the state of the specific process. [Some 6××× alloys can achieve the same solution heat treatment effect whether it is solid solution heat treatment in the furnace or quenched from the high temperature forming process to retain the soluble components in the solid solution. 】
0 H0 q& e: f. B& p/ w8 k/ s

+ ?) z5 Y1 `7 N   State code Description and application 6 G3 x( `& t* {4 A. }) L& k8 c

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After T0 solution heat treatment, after natural aging and then cold working state. It is suitable for products whose strength is improved by cold processing. 4 x) M# x% L) r

T1 is cooled by the high temperature forming process, and then naturally aged to a basically stable state. It is suitable for products that are not subjected to cold working (straightening and leveling can be carried out, but water affects the limit of mechanical properties) after being cooled by the high-temperature forming process. , ]5 ~* t6 c0 g1 C8 D8 q

T2 is cooled by the high temperature forming process, and naturally aged to a basically stable state after cold working. It is suitable for products that undergo cold processing, straightening, and leveling to increase strength after being cooled by a high-temperature forming process.

1 [* y4 w# k$ q1 f$ W9 x$ F  T3 After solution heat treatment, cold working, and then natural aging to a basically stable state. It is suitable for products that undergo cold processing, straightening, and leveling to improve strength after solution heat treatment. 3 U6 e5 y: A# L4 h1 u

T4 is naturally aged to a basically stable state after solution heat treatment. It is suitable for products that do not undergo cold working (straightening and leveling can be carried out, but water affects the limit of mechanical properties) after solution heat treatment.

% ^’^$ V& @6 G7 a8 B$ u  T5 is cooled by the high-temperature forming process and then artificially aged. It is suitable for cooling by the high-temperature forming process without cold working (straightening and leveling are possible, but water influences Mechanical performance limit). Give artificial aging products. $ _/ A’ F’ Q7 i4 R: W X+ n

T6 The state of artificial aging after solution heat treatment. It is suitable for products without cold working (straightening and leveling can be carried out, but water affects the limit of mechanical properties) after solution heat treatment.

$ W+ e$ `0 j3 m* P  T7 After solution heat treatment, it has been aged. It is suitable for products whose strength exceeds the highest peak point on the aging curve during artificial aging in order to obtain some important characteristics after solution heat treatment.

6 ]4 R( n0 Z# q! H’ Y  T8 After solution heat treatment, it is cold worked and then artificially aged. It is suitable for products that have been cold worked, straightened, and leveled to increase their strength.

0 C$ k2 d7 w( A ]. F1 h, s7 I% v4 R’ E   T9 The state of aging after solution treatment, and then cold working. It is suitable for products whose strength is improved by cold working.

9 r2} R” a+ n’ _2 r, x6 S  T10 After being cooled by a high-temperature molding process, it is cold-worked and then artificially aged. It is suitable for products that have been cold-worked, straightened, and leveled to increase their strength.