Core Process Of Billet Rolling
1. Initial hot rolling stage
Processing method: High-temperature rolling
Technique parameters: Under 800-950℃ conditions, the billet is rolled from an initial thickness of 3.0mm to 2.0mm to achieve a 33% deformation.
Post-processing: Surface cleaning is required after rolling
2. Warm rolling initial processing
Processing method: Medium-temperature rolling
Technique parameters: Within the range of 720-800℃, the thickness is reduced from 2.0mm to 1.2mm, and the deformation is 40%.
Post-processing: remove the oxide layer by acid washing
3. Warm rolling secondary processing
Processing method: Medium-temperature rolling
Process parameters: Under conditions of 700-750℃, the thickness is further compressed from 1.2mm to 0.8mm, with a deformation of 33%
Post-processing: Repeat acid washing
4. Cold rolling initial processing
Processing method: Room-temperature rolling
Process parameters: Rolled at room temperature, the thickness is reduced from 0.8mm to 0.5mm, with a single pass deformation of 37.5%
Post-processing: Composite treatment of annealing + acid washing
5. Cold rolling finishing stage
Processing method: Multi-roll precision cold rolling
Process parameters: Multi-pass rolling at room temperature, target thickness of 0.1mm, cumulative deformation of 80%
Post-processing: Vacuum annealing for shaping
Key Process Supplementary Explanation
1. Alloy Type Compatibility Requirements
Low alloy titanium (such as TA1 pure titanium): Can be directly cold rolled to the target thickness
High alloy titanium (such as Ti-6Al-4V): Additional warm rolling passes are required, and the single cold rolling deformation amount should be controlled within 30%
2. Special Process for Ultra-thin Foil Materials
Equipment Requirements: When the thickness is less than 0.1mm, a 20-roll rolling machine is required
Process Control: Matched with dedicated rolling oil lubrication, supplemented by a tension control system
3. Quality Assurance Measures
Real-time monitoring of temperature fluctuations (±10℃) is required during the warm rolling process
Hardness testing should be conducted between cold rolling passes to avoid processing brittleness
Technical Basis and Expansion
Note: The above process parameters are based on simulation of typical production scenarios. Actual application should refer to the "Titanium and Titanium Alloy Processing Manual" or current national standards (such as GB/T 3621). For high-precision foil production, it is recommended to combine with an online detection system to dynamically optimize rolling parameters.