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Super plastically forming mold and mold insert

A forming device and superplastic technology, applied in forming tools, manufacturing tools, metal processing equipment, etc., can solve problems such as forming defects, material separation, and component discarding

Inactive Publication Date: 2005-08-10
VESUVIUS CRUCIBLE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the molded part is ejected, this can lead to material separation at the mold surface and / or formation of defects on the molded part surface
In addition, premature wear of the mold occurs
These deficiencies result in a large number of molded parts being discarded

Method used

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  • Super plastically forming mold and mold insert
  • Super plastically forming mold and mold insert
  • Super plastically forming mold and mold insert

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] figure 1 Illustrated is a mold according to the invention, indicated generally at 10 . The mold is used to shape the part 12 by superplastic forming, for example, as figure 2 shown.

[0029] Part 12 is made, for example, of titanium or a titanium alloy such as TA6V. The part may be made of other materials capable of superplastic deformation, such as aluminum.

[0030] In this example, if figure 1 The mold 10 is shown to include a base 14 and a cover 16 between which a superplastically deformable sheet 18 will be positioned. The base 14 houses an insert 20 defining a mold surface designed to contact the molded part. Alternatively, the molding surface is formed directly in the base 14 .

[0031] According to the invention, the mold 10 comprises at least one portion designed to be in contact with the molded part, made of sintered fused silica. The sintered fused silica portion of the mold may thus include a base 14 , an insert 20 and / or a cover 16 .

[0032] Those...

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PUM

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Abstract

The mould (10) includes at least one part (20), intended to be in contact with the component (12) being moulded, made from sintered vitreous silica. According to the process, said component (12) is formed by the superplastic forming in the mould (10) of a plate (18) made of a material capable of undergoing superplastic deformation, for example titanium or titanium alloy, aluminium or aluminium alloy, or any material exhibiting superplastic properties. Preferably, a barrier is formed between at least a part of the contact surfaces of the mould (10) and the component (12) being moulded, for example by coating with boron nitride, at least partially, the contact surfaces of the mould (10) and the component (12) being moulded, before placing the plate (18) in the mould (10), and / or by injecting an inert gas, notably helium or argon, between the contact surfaces of the mould (10) and the component (12) being moulded.

Description

technical field [0001] The invention relates to a mold, an insert, a device and a method for forming components by superplastic forming, and the components obtained with this method. Background technique [0002] Under certain conditions of temperature and mechanical stress, certain materials, such as titanium, titanium alloys, aluminum or certain aluminum alloys, certain steels, etc., exhibit superplasticity, that is, the ability to undergo a large amount of deformation without breaking. This property can enable the material to use the superplastic molding method generally represented by the abbreviation SPF (SuperPlasticForming) to manufacture parts with complex shapes. [0003] Metal molds for forming parts by superplastic forming are currently known in the art. Such metal molds are expensive due to the special alloys used and the complex machining required. In addition, the metal mold consumes a large amount of energy for heating to reach a temperature suitable for the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D26/055B21D37/01B21D37/02B21D37/16B21D37/20B30B5/00
CPCB21D37/20B21D26/055
Inventor D·默尔F·凯尔罗德
Owner VESUVIUS CRUCIBLE CO
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