Method for determining uneven-thickness blank for realizing local loading forming of rib-plate-shaped three-dimensional component

A technology of local loading, three-dimensional components, applied in the field of thick blanks, which can solve the problems of local loading characteristics without considering the mold partition, high cost, and inability to fill the area.

Inactive Publication Date: 2012-08-15
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] In order to overcome the disadvantages existing in the prior art that some areas cannot be filled, or the local loading characteristics of the mold partitions are not considered,

Method used

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  • Method for determining uneven-thickness blank for realizing local loading forming of rib-plate-shaped three-dimensional component
  • Method for determining uneven-thickness blank for realizing local loading forming of rib-plate-shaped three-dimensional component
  • Method for determining uneven-thickness blank for realizing local loading forming of rib-plate-shaped three-dimensional component

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Embodiment Construction

[0136] This embodiment is a method for determining the blanks of unequal thickness for local loading and forming of a three-dimensional rib-shaped member. The member in this embodiment is a rib-shaped member 7, such as Figure 4b As shown, the upper surface and the lower surface of the component in this embodiment have mutually symmetrically distributed ribs; the upper mold is divided into two pieces, and the center of the partition rib 8 is the mold partition position; the material of the component is TA15 titanium alloy. The forming process in this embodiment has two loading steps.

[0137] In this embodiment, the isothermal forming process is adopted for the local loading forming of the three-dimensional rib-shaped member, the forming temperature is 970°C, the loading speed of the upper die is 0.2 mm / s, and the friction factor m is taken as 0.3.

[0138] The shape of the component in this embodiment is approximately rectangular, the two ends of the component are planes, and...

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Abstract

The invention discloses a method for determining an uneven-thickness blank for realizing local loading forming of a rib-plate-shaped three-dimensional component. A computational formula for the volume of materials flowing into a rib cavity is determined according to various loading states in a forming process, a simplified interface is fast analyzed, and the time for determining the shape of the blank is shortened; the shape of the blank is corrected according to a numerical value simulated result, the uneven-thickness blank meeting the requirement of filling is determined, and cost is reduced; and the volume distribution of the determined uneven-thickness blank is reasonable, shortcomings that the blank cannot fully filled, is folded and the like in the forming process are eliminated, allowance for machining is reduced, forming loads are reduced, the shape of the blank is simple, and the blank is easy to be manufactured.

Description

technical field [0001] The invention relates to hot-working forging of hard-to-deform alloys in the field of hot-working, in particular to a method for determining blanks of unequal thickness for local loading and forming of rib-shaped three-dimensional members. technical background [0002] The use of high-performance lightweight alloy materials, such as titanium alloys, and lightweight structures, such as thin-walled, integral, and ribbed structures, is an effective technical way to improve the performance and reliability of parts and realize lightweight equipment. The large-scale rib-plate integral member with high-reinforcement and thin-web structure effectively improves structural efficiency, reduces equipment weight and has excellent service performance. It is an important lightweight load-bearing member in aerospace vehicles. [0003] Such large and complex components are not only difficult to deform, but also complex in structure and large in projected area. Using tr...

Claims

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Application Information

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IPC IPC(8): B21J1/00B21J5/02
Inventor 杨合张大伟樊晓光
Owner NORTHWESTERN POLYTECHNICAL UNIV
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