Precision injection molding device and method for realizing rapid mold manufacturing by using the same

A spray forming and precise technology, applied in the field of rapid mold manufacturing, can solve the problems of large cutting volume, long production process, brittle steel, etc., and achieve the effects of low production cost, high production efficiency and excellent performance

Inactive Publication Date: 2011-12-28
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its main disadvantages are: 1) long production process; 2) high cost and high energy consumption; 3) large amount of cutting and serious waste of materials; (Such as C, V, etc.) If the content is too high, segregation is easy to occur, the grains are coarse, the steel becomes brittle, and 'hardness' and 'toughness' cannot be combined

Method used

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  • Precision injection molding device and method for realizing rapid mold manufacturing by using the same
  • Precision injection molding device and method for realizing rapid mold manufacturing by using the same

Examples

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Effect test

Embodiment 1

[0034] In the present embodiment, the casting mold 8 adopts a ceramic type, and the waste mold is remanufactured.

[0035] Take HM1 die steel engine valve hot final forging die as an example.

[0036] 1) Make a ceramic mold. Firstly, according to the forming requirements of valve forgings, considering the characteristics of ceramic forming, design and process aluminum-based separated ceramic molds; secondly, prepare ceramic slurry with alumina ceramic powder and binder, and form ceramic molds in copy molds8 ; Then, solidify, dry and strengthen.

[0037] 2) Precision spray forming. Put the scrapped HM1 steel molds in the melting crucible 4 after cleaning scale, impurities and oil stains, use high-frequency induction power supply, and carry out melting under the gas protection atmosphere. Temperature measurement, temperature control, and auxiliary infrared thermometer for temperature measurement and calibration to accurately control the solution temperature; at the end of s...

Embodiment 2

[0041] In this embodiment, the casting mold 8 adopts a metal casting mold, and the waste mold is remanufactured.

[0042] 1) Make a metal mold. First of all, according to the forming requirements of the valve forgings, considering the shrinkage of the material, the valve steel 21-4N is directly cut to manufacture the casting mold. The mold surface roughness reaches 0.1μm.

[0043] 2) Precision spray forming. It is basically the same as Example 1, except that the superheating degree of the metal solution 5 is slightly higher, 100-200°C, and the preheating temperature of the mold 8 is also slightly higher, 700-800°C.

[0044] 3) Clean up. After cooling, the metal mold in the mold is extruded on a press to obtain a precision injection molding mold.

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Abstract

The invention relates to a precision injection molding device and a method for realizing rapid mold manufacturing by using the device. The invention combines spray forming and mold rapid manufacturing technology to realize precision spray forming rapid mold making. The basic principle is to directly spray and deposit the molten and atomized metal liquid on the mold through the spray forming device, and deposit layer by layer to obtain the required mold cavity shape, size and surface quality. The present invention is a convenient and practical precision injection molding device with simple structure, convenient use, excellent performance, and the method for quickly manufacturing molds with the device can make the molds produced have good internal structure and excellent working performance, and the surface quality is good , high dimensional accuracy, low production cost, short cycle time and high production efficiency.

Description

technical field [0001] The invention relates to rapid mold manufacturing technology, in particular to a precision injection forming device and a method for realizing rapid mold manufacturing by using the device, and belongs to the innovative technology of the precision injection forming device and the method for realizing rapid mold manufacturing by using the device. Background technique [0002] The traditional manufacturing method of the mold is: smelting mold steel---casting to obtain ingot---plastic processing (rolling, etc.) to obtain mold steel---forging mold blank---heat treatment---machining (coarse) ---Heat treatment---Machining (finishing), some of the processes may have to be repeated many times. Its main disadvantages are: 1) long production process; 2) high cost and high energy consumption; 3) large amount of cutting and serious waste of materials; (Such as C, V, etc.) If the content is too high, segregation is easy to occur, the grains are coarse, the steel be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/115
Inventor 程永奇孙友松肖思农张鹏黎沃光章争荣莫东强
Owner GUANGDONG UNIV OF TECH
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