Method for processing TC4 titanium alloy into forged rings

A processing technology, titanium alloy technology, applied in the processing technology field of rare and precious metal products, can solve problems such as unreasonable process flow, unguaranteed heating equipment and temperature, great differences in mechanical properties and structures, etc., to achieve easy process and actual measurement The effect of excellent data and easy operation

Inactive Publication Date: 2010-12-29
宝鸡市金盛伟业稀有金属有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

The current titanium ring forging process basically cannot guarantee the needs of use: on the one hand, the heating equipment and temperature cannot be guaranteed, and on the other hand, the process flow is not very reasonable. Although the size and surface of the forged ring blank can meet the requirements, but The mechanical properties and organization are quite different from the standard requirements

Method used

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  • Method for processing TC4 titanium alloy into forged rings
  • Method for processing TC4 titanium alloy into forged rings
  • Method for processing TC4 titanium alloy into forged rings

Examples

Experimental program
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Embodiment Construction

[0025] According to the needs of the actual situation, we need to base the performance of the TC4 material on the basis of the basic requirements, and strive to improve the mechanical properties of the material to the greatest extent through the adjustment of other components in the alloy, so that the material can reach or exceed the maximum extent in use. Use requirements, even if the tensile strength is increased, the plasticity is not reduced. This requires finding an optimal range in terms of the chemical composition ratio of the material. We find the most suitable range of oxygen and iron element content through the comparison of the influence of the following composition ratios on the material properties. The longitudinal samples of Φ50TC4 rods with different components under the same processing technology conditions are taken for testing.

[0026]

[0027] From the comparison of the above data, it can be seen that the increase of iron and oxygen elements both increa...

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Abstract

The invention relates to a method for processing TC4 titanium alloy into forged rings, comprising the following steps of: (1) raising the temperature of a titanium cast ingot to 1150-1200 DEG C in a natural gas heating furnace, and keeping the temperature for more than 180 minutes to ensure that the inner temperature and the outer temperature of the whole titanium cast ingot are consistent and uniform; (2) directly processing the titanium cast ingot into a square blank at the deformation rate of 70%-80% by utilizing an oil press; (3) sawing the square blank into small blanks by using a band saw; (4) heating and forging the small blanks for three times by utilizing a resistance heating furnace to form cakes; (5) punching in the centers of the cakes by using a puncher; (6) heating the hollow blanks to 950 DEG C, keeping the temperature for more than120 minutes, and then broaching by using a saddle; and (7) completely annealing at the temperature of 120-200 DEG C by adopting the alpha+beta / beta phase transformation point temperature of 985 DEG C, placing the blanks in the resistance heating furnace at the temperature below 500 DEG C, keeping the temperature of 785 DEG C for 90 minutes, and then cooling in the air. The titanium cast ingot is forged into qualified forged rings by using a reasonable forging process.

Description

technical field [0001] The invention belongs to the technical field of metal material processing, in particular to the processing technology of rare and precious metal products. Background technique [0002] With the increasing use of titanium alloys, many important parts of many products are gradually replaced by titanium alloys, the most commonly used is TC4 (Ti-6Al-4V), which is to improve the performance of products, upgrade and replace them, and catch up with the world's advanced needs. The current titanium ring forging process basically cannot guarantee the needs of use: on the one hand, the heating equipment and temperature cannot be guaranteed, and on the other hand, the process flow is not very reasonable. Although the size and surface of the forged ring blank can meet the requirements, but The mechanical properties and organization are quite different from the standard requirements. Especially the structure, basically even the original β grain boundary is not com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K21/00B21K29/00
Inventor 王学璐刘永开
Owner 宝鸡市金盛伟业稀有金属有限公司
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