Double-pressure squeeze casting die and double-pressure squeeze casting method
A squeeze casting and mold technology, which is applied in the field of double pressure squeeze casting and double pressure strengthened liquid/semi-solid forming molds, can solve the problems of difficult elimination of material internal stress and microcracks, difficulty in preparation and synthesis, difficulty in post-processing, etc. , to achieve the effect of good bonding surface between extrusion material and mold cavity, tight structure and good exhaust
Pending Publication Date: 2020-10-16
罗福根
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Problems solved by technology
However, due to the difficulty in preparing and synthesizing the material of this product, there are many post-processing, especially forging and heat treatment are difficult to eliminate the internal stress and micro-cracks of the material, which has caused great difficulty in post-processing.
Method used
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Embodiment 1
[0058] See figure 1 , the present embodiment provides a dual-pressure die combined with warm isostatic pressing and extrusion casting, which mainly includes: an upper indenter 1, a die 2, a pressure ring 3, a pressure aid layer 4, an outer jacket 5, and a bottom plate 6 , Lower top core 7, upper pressing plate 9. The mold is ready to use on a general purpose press.
[0059] Wherein, the outer surface of the upper pressing head 1 is cylindrical, and its bottom surface matches the upper shape of the workpiece to be manufactured;
[0060] The upper pressure head 1 is connected to a hydraulic press, such as a general-purpose double-action press, and the hydraulic press includes an upper jack, a lower jack, and an outer jack cylinder;
[0061] It is particularly pointed out that the material of the upper pressing head 1 is a high-strength, high-temperature-resistant, corrosion-resistant, silicon carbide composite material.
[0062] Die 2 is a truncated cone as a whole, which has...
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Abstract
The invention discloses a double-pressure squeeze casting die. The die mainly comprises a female die, an upper pressure head, a lower ejector core, a bottom plate, an outer sleeve and a pressing aid layer, wherein the female die is provided with a cavity which is through up and down; the upper pressure head and the lower ejector core are used for applying pressure to the liquid / semi-solid melt, and the upper pressure head and the lower ejector core move oppositely coaxially and asynchronously during pressure application; the bottom plate is provided with a guide hole, and the lower ejector core penetrates through the guide hole; the outer sleeve is connected with the bottom plate and surrounds the outside of the female die at equal intervals; and the pressing aid layer is arranged betweenthe outer sleeve and the female die. The invention further discloses a double-pressure extrusion casting method using the die. The die and the process particularly solve the problems of extrusion casting of ferrous metal, hard insoluble materials, molding of current composite materials and the like, and enable the application of metal ceramic or new ceramic metal materials to all industrial dies to become possible at the same time.
Description
technical field [0001] The invention relates to the technical field of squeeze casting, in particular to a complete set of dual-pressure intensified liquid / semi-solid forming mold combined with warm isostatic pressing and a dual-pressure squeeze casting method using the mold. Background technique [0002] With the advancement of modern science, especially the rapid development of aerospace technology, high-speed rail, and construction machinery, higher and higher requirements are placed on structural materials, which are difficult for traditional metal or alloy materials to meet. For example, steel-bonded alloy materials, one of metal matrix composite materials, provide a good choice for modern advanced industries due to their special properties such as low density, high strength, high specific modulus, high temperature resistance, corrosion resistance, and wear resistance. However, due to the difficulty in preparing and synthesizing the material of this product, there are m...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B22D18/02
CPCB22D18/02
Inventor 罗福根谈佳
Owner 罗福根