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Impact forming method of viscous medium and impact forming die

A technology of viscous medium and impact forming, which is applied in the direction of forming tools, manufacturing tools, metal processing equipment, etc., can solve the problems of easy springback, product shape does not meet the requirements, etc., achieve good forming effect, avoid local thinning of wall thickness, Simple operation effect

Active Publication Date: 2022-01-07
HARBIN INST OF TECH
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  • Abstract
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Problems solved by technology

In the current forming of viscous media, the hydraulic cylinder is used to control the uniform movement of the plunger to load the viscous medium, and the forming is a quasi-static process. The above forming method is used for forming high-strength metal sheets such as advanced high-strength steel, magnesium alloy, and titanium alloy. , it is easy to spring back after forming, resulting in the shape of the product not meeting the requirements

Method used

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  • Impact forming method of viscous medium and impact forming die
  • Impact forming method of viscous medium and impact forming die
  • Impact forming method of viscous medium and impact forming die

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Embodiment Construction

[0029] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, but not all of them. Based on the embodiments in the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.

[0030] The following discussion provides several embodiments of the application. Although each embodiment represents a single combination of the application, different embodiments of the application can be replaced or combined in combination, so the application can also be considered to include all possible combinations of the same and / ...

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Abstract

The present application provides an impact forming method for a viscous medium and an impact forming die, wherein the impact forming method includes: releasing the impact hammer, the impact hammer moves toward the medium chamber under the action of gravity, and the impact hammer An impact load is applied to the viscous medium, and the viscous medium causes the plate to quickly adhere to the cavity of the concave mold to form a part. In the impact forming method provided by this application, under the high-speed impact load of the impact hammer, the viscous medium generates high pressure instantaneously, so that the strain rate sensitivity of the viscous medium can fully play its role, resulting in a significant non-uniform pressure distribution, making high-strength The high-quality sheet can be quickly formed, and at the same time reduce the internal stress gradient of the formed part to achieve the purpose of controlling springback.

Description

technical field [0001] The present application relates to the technical field of viscous medium forming, in particular to a viscous medium impact forming method and impact forming die. Background technique [0002] The viscous medium is a strain rate sensitive material. In the pressure forming of the viscous medium, the loading rate of the viscous medium has a great influence on the forming, and the viscous medium will produce a non-uniform distribution of pressure load during the deformation process. In the current forming of viscous media, the hydraulic cylinder is used to control the uniform movement of the plunger to load the viscous medium, and the forming is a quasi-static process. The above forming method is used for forming high-strength metal sheets such as advanced high-strength steel, magnesium alloy, and titanium alloy. , It is easy to spring back after forming, resulting in the shape of the product not meeting the requirements. Contents of the invention [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D22/02B21D37/10
CPCB21D22/02B21D37/10
Inventor 王忠金冯业坤郭昆
Owner HARBIN INST OF TECH
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