Manufacturing method for hot-shaped die

A manufacturing method and thermal shaping technology, applied in the field of mold manufacturing, can solve problems such as unstable quality, poor toughness, and insufficient process precision

Active Publication Date: 2014-04-09

DONGGUAN WENYU IND

4 Cites 5 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0003] Traditional molds are manufactured by stamping process. Stamping refers to a processing method that uses the mold under the action of a press to apply pressure to the material ...

Abstract

The invention discloses a manufacturing method for a hot-shaped die. The method includes the steps that a die to be shaped is placed on a lower die, and the die to be shaped is pressed downwards through an upper die; preheating is performed on the die to be shaped; after the die to be shaped is preheated to be at a preset temperature, the upper die and the lower die extrude the die to be shaped; quenching and tempering are performed on the die after hot extrusion treatment; polishing is performed on the surface of the die after the hot treatment; acid pickling is performed on the polished die, and then the hot-shaped die is obtained. By the adoption of the method, under the state of high temperature, internal stress of the die is reduced, and the die is pressed flat, so that the deformed die does not rebound after being pressed flat, and the die has good toughness.

Application Domain

Shaping tools

Technology Topic

QuenchingInternal stress +4

Image

Examples

Experimental program(1)

Example Embodiment

[0020] In order to further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0021] See figure 1 with figure 2 , The present invention discloses a method for manufacturing a thermal shaping mold, which includes the following steps:

[0022] Step 100, blanking, place the mold 3 to be shaped on the lower mold 2, and the upper mold 1 presses down the mold 3 to be shaped.

[0023] Step 110, preheating, preheating the mold 3 to be shaped.

[0024] Step 120, hot extrusion. After the mold 3 to be shaped is heated to a preset temperature, the upper mold 1 and the lower mold 2 squeeze the mold 3 to be shaped with the preset temperature of 600°C to 800°C, so that the mold is at a high temperature. Reduce the internal stress of the mold and flatten the mold so that the deformed mold does not rebound after flattening.

[0025] Step 130, heat treatment, quenching and tempering the die after the hot extrusion treatment. High temperature tempering treatment is carried out immediately after quenching, and the tempering temperature is 500-650°C to eliminate the quenching stress and obtain better toughness. The heat preservation time of the tempering treatment is not less than one hour. Make it obtain better toughness.

[0026] Step 140, grinding and polishing, polishing the surface of the heat-treated mold, and removing dirt and scratches on the surface of the mold.

[0027] Step 150, cleaning, pickling and cleaning the polished mold. Pickling is a typical corrosion process. The oxide on the metal surface is removed by acid etching, and the metal structure is completely exposed, and finally the heat-shaping mold is obtained.

[0028] In summary, the device passes the steps: placing the mold 3 to be reshaped on the lower mold 2, and the upper mold 1 presses the mold 3 to be reshaped; preheating the mold 3 to be reshaped; heating the mold 3 to be reshaped to a preset temperature After that, the upper mold 1 and the lower mold 2 squeeze the mold 3 to be reshaped; quench and temper the mold after the hot extrusion; polish the surface of the heat-treated mold; and clean the polished mold by pickling. Get the heat shaping mold. Make the mold in the high temperature state, reduce the internal stress of the mold, flatten the mold, so that the deformed mold does not rebound after flattening, and has better toughness.

[0029] The above-mentioned embodiments only express several implementation modes of the present invention, and their description is more specific and detailed, but they should not be interpreted as a limitation on the scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.