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Manufacturing method of die-casting cavity die

A manufacturing method and casting cavity technology, applied in the direction of casting molds, casting mold components, manufacturing tools, etc., can solve application limitations, instability and collapse of thin-walled blanks, and no measures to ensure the bonding between casting materials and thin-walled parts Quality and other issues, to achieve the effect of convenient operation, eliminating shrinkage and shrinkage defects, and saving precious alloy components

Pending Publication Date: 2022-03-29
广东鸿特精密技术肇庆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The application number is CN201310132690.1, which is a novel composite casting method based on metal 3D printing, including the steps and conditions: molding thin-walled parts with complex shapes through metal 3D printing technology, filling the thin-walled parts with casting materials through casting methods, The melting point of the casting material is lower than the melting point of the thin-walled parts, and complex solid parts are formed after cooling; when the temperature of the poured metal liquid is high in this process, the thin-walled body made by metal 3D printing may be unstable and collapse, so casting is required The melting point of the material is lower than that of the thin-walled parts, and there are no measures to ensure the bonding quality between the cast material and the thin-walled parts, so its application is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for manufacturing a die-casting cavity mold, comprising the following steps and process conditions thereof:

[0032] Step 1: Prepare a shell-shaped thin-walled member that matches the inner surface of the mold cavity

[0033] H13 alloy mold steel metal powder is used to manufacture shell-shaped thin-walled components through laser sintering additive rapid prototyping machine. Subsequent processing allowance is 0.5-1.0 mm, and the outer surface has ribs and grooves distributed alternately, the height of ribs is 2 mm, and the depth of grooves is 2 mm. The two ends of the shell-shaped thin-walled member are equipped with pipe connection ports with a diameter of 20mm and processed with threads. One end port of the H13 shell-shaped thin-walled member is covered with a breathable steel sheet and connected to a metal pipe, and the other end is a high-temperature resistant particle support inlet. A ventilated steel sheet is also installed behind the high-temperature-r...

Embodiment 2

[0041] The manufacturing method of a kind of die-casting cavity mold described in this embodiment includes the steps and its process conditions are basically the same as that of Embodiment 1. The difference from Embodiment 1 is that this embodiment uses heat-resistant nickel alloy mold steel or heat-resistant tungsten alloy The die steel material is hot-extruded to obtain a wire billet, and then the heat-resistant nickel alloy die steel or heat-resistant tungsten alloy die steel material is manufactured to obtain a flat wire of precise size through flat die drawing, and then the metal wire rapid prototyping machine is used to The heat-resistant steel flat wire is made into a shell-shaped thin-walled member that is consistent with the shape and size of the mold cavity and has pipe connections at both ends.

Embodiment 3

[0043] The steps and process conditions included in the manufacturing method of a die-casting cavity mold described in this embodiment are basically the same as those in Embodiment 1. The difference from Embodiment 1 is that this embodiment uses a heat-resistant tungsten alloy powder material, which is sintered by laser The additive rapid prototyping machine produces shell-shaped thin-walled components.

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Abstract

The invention discloses a manufacturing method of a die-casting cavity die. Firstly, a shell-shaped thin-wall component matched with the complete surface of a die cavity is manufactured through additive rapid forming, then the whole die is cast through inlaying and compounding, then slitting is conducted along a parting surface, a fixed die module and a movable die module are obtained, and then the die-casting cavity die is formed through combination. And the surface of the cavity is subjected to laser rapid scanning secondary sintering uniform hardening heat treatment, and then ball milling and polishing are conducted till the use requirement of a die-casting cavity die is met. And the metal liquid is sequentially solidified from inside to outside from the component mold core, so that the defects of shrinkage porosity and shrinkage cavity in casting can be eliminated, and the quality of a cavity mold blank material is ensured. The manufacturing process is simple in route and process step, stable, reliable, convenient to operate and easy to implement. The overall production cost is low, the application field is large and wide, the market application prospect is good, and great economic benefits can be created.

Description

technical field [0001] The invention relates to the preparation technology of a liquid metal forming mold, in particular to a manufacturing method of a die-casting cavity mold. Background technique [0002] Die-casting is a process in which metal fluid is injected into the mold cavity at high speed by a die-casting machine and filled with the mold cavity. After the material in the mold cavity cools down, a metal part with the same shape and size as the mold cavity is obtained. Die-casting mold is a tool for forming die-casting metal parts. It is subjected to the cycle of high temperature, high pressure and thermal stress during work. The surface of the mold cavity is washed by high-temperature metal liquid, and the cooling channel inside the mold material is continuously cooled by water. The material performance requirements are very high. Commonly used mold processing and manufacturing methods, such as a heat treatment process for die-casting molds with application number ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/24B22C9/02B22D17/22
CPCB22C9/24B22C9/02B22D17/22Y02P10/25
Inventor 卢宇轩张金荣吕力平
Owner 广东鸿特精密技术肇庆有限公司