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Larger titanium alloy structural component die-forging forming method

A technology of titanium alloy and structural parts, which is applied in the field of die forging of large titanium alloy structural parts, can solve the problems of high rib sagging and high rib filling difficulties, and achieve the effect of reducing the demand for maximum forming force

Active Publication Date: 2015-03-25
WUXI TURBINE BLADE
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Problems solved by technology

[0003] In view of the above problems, the present invention provides a die forging forming method for large titanium alloy structural parts, which can solve the problems of difficult filling of high ribs and sagging of high ribs in the forming process of conventional forging forming methods, and can effectively Reduce material deformation resistance during die forging and effectively improve material utilization

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Embodiment Construction

[0028] Describe in detail the implementation process of the inventive method below in conjunction with accompanying drawing:

[0029] (1) First, perform pre-forging on the blank 10 to obtain the pre-forging 3, wherein the pre-forging includes the following steps:

[0030] (1) The first pre-forging: see Figure 8 , the first pre-forging die 20 carries out the forging forming of the high-rib part 1 of the forging and the forming of the web lower die surface 2-1 of the pre-forging on the blank 10, and at the same time, the first pre-forging die 20 is located on the high-rib part 1 The upper die surface of the blank on the inner side is subjected to longitudinal split necking forming. During the split necking process, the metal material flows to the inner side of the high rib under the forging pressure of the first pre-forging die 20 and converges upward to form a boss 30. A concave groove 40 extending longitudinally is formed between the high-rib portion 1 and the boss 30, see ...

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Abstract

The invention provides a larger titanium alloy structural component die-forging forming method. By means of the method, the problems that when a conventional die-forging forming method is adopted to conduct forming machining, it is difficult to fill high ribs, and edge subsiding occurs for the high ribs can be solved, meanwhile material deformation resistance is effectively lowered, and the material utilization rate is increased effectively. According to the method, firstly, preforging forming is conducted on a blank to obtain a preforging piece, preforging forming is conducted on the high rib portion of a forging piece and the web portion of the preforging piece, and then finish-forging forming is conducted on a web pit in the preforging piece to obtain the final forging piece; according to the preforging forming, firstly die-forging forming is conducted on the high rib portion of the forging piece of the blank and web lower die face forming is conducted on the prefprging piece while longitudinal material separation neck pressing forming is conducted on a blank upper die face located on the inner side of the high rib portion, in the process, metal materials flow towards the inner side of a high rib and are converged upwards to form a boss, and meanwhile a sunken groove extending longitudinally is formed between the high rib portion and the boss; forging is conducted on the boss and the groove, and thus the web portion of the preforging piece is formed.

Description

technical field [0001] The invention relates to the field of thermal processing and forming of metal materials, in particular to the field of thermal processing and forming of titanium alloy structural forgings, in particular to a method for die forging and forming of large titanium alloy structural parts. Background technique [0002] The so-called large titanium alloy die forgings refer to structural parts with a length (L) greater than 2000mm, a forging weight (Mg) exceeding 500Kg, and a height (H) greater than 250mm. A large titanium alloy structural forging 4, the structure of which is shown in figure 1 and figure 2 , there are high ribs 1 on one side of the forging and the aspect ratio of the high ribs 1 is 7:1. The material is TC18 titanium alloy. This titanium alloy structural part is an important stress-bearing part on the aircraft and requires die forging. Due to the large size and heavy weight of this forging, it is a large titanium alloy structural forging. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/02
Inventor 陈瑞钢赵顺峰崔慧然
Owner WUXI TURBINE BLADE
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