Forming device and application of large-size ultra-thin powder metallurgy gradient material

Abstract

The invention belongs to the field of powder metallurgy forming equipment, and particularly relates to a forming device and application of a large-size ultra-thin powder metallurgy gradient material.The forming device of the large-size ultra-thin powder metallurgy gradient material comprises a pre-pressing forming system and a laminating powder laying forming system; and the laminating powder laying forming system is composed of a mold upper pressing head, a mold sleeve, a mold lower pressing head, a spiral height control instrument lifting table, a spiral height control instrument platform,a spiral rotary knob, a lifting screw rod and a height control instrument base. The laminating powder laying forming system of the forming device of the large-size ultra-thin powder metallurgy gradient material organically combines a spiral height measuring instrument and mold pressing forming, laminating powder laying with the descending height at the micron level is achieved, laying uniformity of each layer of power is guaranteed, and due to the fact that a mold can be replaced at any time, it can be achieved that sample forming blank bodies in different sizes are prepared. The forming device of the large-size ultra-thin powder metallurgy gradient material achieves integration of multi-layer powder laying, prefabricating forming and final forming in the powder metallurgy technology, thepressing forming performance is good, and thickness control of each layer is accurate.

Description

technical field [0001] The invention belongs to the field of powder metallurgy forming equipment, and in particular relates to a forming device and application of a large-size ultra-thin powder metallurgy gradient material. Background technique [0002] Modern high-tech competition relies heavily on the development of material science. The level of understanding, mastery and application of materials, especially high-performance materials, directly reflects the country's scientific and technological level and economic strength, and is also a symbol of a country's comprehensive national strength and the speed of civilization progress. Therefore, the development and research of new materials is the forerunner of the development of materials science. Gradient materials are one of the most promising new materials in the 21st century, and have aroused widespread interest and attention from all over the world as soon as they appeared. According to different gradient properties, f...

AI Technical Summary

Problems solved by technology

Relevant researchers at home and abroad use compression molding to prepare gradient materials, the number of powder accumulation layers is limited (the laboratory process can reach up to 10 layers, and industrial production is no more than 3 layers), the thickness of the single layer is relatively large (usually >1mm), Limited pressurization severely limits the size of the material (cross-sectional area 2 ); the thinnest thickness of the compacted sheet obtained by powder metallurgy sheet lamination is about 1mm, but the requirements for powder characteristics, powder preparation, powder forming and corresponding supporting equipment are relatively high

[0004] To sum up, the existing forming technologies and devices have various limitations. At present, there is no mature and stable integrated forming device to realize the gradient blank forming of large-scale ultra-thin samples, and the modern industrial technology The development puts higher and stricter requirements on the gradient distribution and size of gradient materials. Therefore, it is very important to design and develop a new large-size ultra-thin powder metallurgy gradient material forming device to broaden the application field of gradient materials.

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