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Impact forming method and impact forming die for viscous medium

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: 2021-06-04
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

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

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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 invention provides an impact forming method and an impact forming die for a viscous medium. The impact forming method comprises the steps that an impact hammer is released, the impact hammer moves towards a medium bin under the action of gravity, the impact hammer applies an impact load to the viscous medium, and the viscous medium enables a plate to be rapidly attached to a cavity of a female die to form a part. According to the impact forming method, under the action of the high-speed impact load of the impact hammer, the viscous medium instantaneously generates high pressure, so that the strain rate sensitivity of the viscous medium fully plays a role, remarkable non-uniform pressure distribution is generated, and a high-strength plate can be quickly formed; and meanwhile, the internal stress gradient of a formed part is reduced, and the purpose of controlling springback is achieved.

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 Applications(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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