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High-melting metal arc spraying rapid die-manufacturing method

A high-melting-point metal and arc spraying technology, which is applied in metal material coating technology, fusion spraying, metal processing equipment, etc., can solve coating shrinkage, thermal stress, large porosity, mold service life and application range limitations , process parameter control is difficult to grasp and other problems, to achieve the effect of eliminating coating defects, less oxides, and uneven appearance

Inactive Publication Date: 2009-05-20
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the relatively low hardness of zinc and zinc-aluminum alloys, the service life and application range of the mold are limited to a certain extent.
[0009] The arc spraying technology of high melting point and high hardness materials is relatively easy to realize on metal substrates, but there are great difficulties in the process of manufacturing mold shells on the surface of non-metallic master molds
Carbon steel, alloy steel and other high-melting-point metals have relatively large coating shrinkage, thermal stress, and porosity during spraying, and the coating is easy to crack, warp, and peel off. It is difficult to manufacture mold shells, and it is difficult to control process parameters.
[0010] During the arc spraying process, carbon and alloy elements are easy to be burned, which will easily cause coating pores and oxide slag inclusions, which will reduce the coating performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 The steps to realize rapid mold making are as follows:

[0038] (1) Preparation of master model:

[0039] 1) Determine the shape and size of the master mold base according to the shape and size of the product, make a non-fired ceramic master mold base with high temperature resistant ceramic raw materials, and dry it:

[0040] 2) After drying, the base of the master mold is manufactured according to the 3D digital model of the part to match the 3D digital model of the base of the master mold with its shape, and the base of the master mold is machined on the numerical control equipment:

[0041] 3) Obtain a master mold whose size and precision meet the product design requirements.

[0042] (2) Pretreatment of master mold:

[0043] 1) grinding the inner surface of the master mold, or using a concentration of 20% hydrochloric acid to brush the master mold surface; improving the surface roughness of the master mold, and removing dust and particles on the surfa...

Embodiment 2

[0055] (1) Preparation of master model:

[0056] 1) Determine the shape and size of the master mold base according to the shape and size of the product, make a non-fired ceramic master mold base with high temperature resistant ceramic raw materials, and dry it:

[0057] 2) After drying, the base of the master mold is manufactured according to the 3D digital model of the part to match the 3D digital model of the base of the master mold with its shape, and the base of the master mold is machined on the numerical control equipment:

[0058] 3) Obtain a master mold whose size and precision meet the product design requirements.

[0059] (2) Pretreatment of master mold:

[0060] 1) Polish the inner surface of the master mold, or use the concentration of 36% hydrochloric acid to brush the master mold surface; improve the surface roughness of the master mold, and remove the dust and particles on the surface of the master mold;

[0061] (3) Heating the master mold: heat the master mo...

Embodiment 3

[0072] (1) Preparation of master model:

[0073] 1) Determine the shape and size of the master mold base according to the shape and size of the product, make a non-fired ceramic master mold base with high temperature resistant ceramic raw materials, and dry it:

[0074] 2) After drying, the base of the master mold is manufactured according to the 3D digital model of the part to match the 3D digital model of the base of the master mold with its shape, and the base of the master mold is machined on the numerical control equipment:

[0075] 3) Obtain a master mold whose size and precision meet the product design requirements.

[0076] (2) Pretreatment of master mold:

[0077] 1) Polish the inner surface of the master mold, or use the concentration of 28% hydrochloric acid to brush the master mold surface; improve the surface roughness of the master mold, and remove the dust and particles on the surface of the master mold;

[0078] (3) Heating the master mold: heat the master mo...

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Abstract

The invention belongs to the field of the advanced manufacturing technology in the manufacturing industry, relates to a quick die manufacturing method, in particular to a quick die manufacturing method through arc spraying of high-melting metals. The method adopts a non-roasting ceramic master die as a composite mold base, arranges fused drop on the surface of the master die through arc spraying of the high-melting metals, adds a die frame on the rear of a shell after spraying of a certain thickness, fills resin and high-strength cement back lining, and performs after-treatment such as edge cutting and polishing on the surface of the shell after demoulding. The invention provides the quick and low-cost die manufacturing integrated technology.

Description

technical field [0001] The invention belongs to the advanced manufacturing technology field of the manufacturing industry, and relates to a rapid mold manufacturing method, in particular to a high-melting-point metal arc spraying rapid mold-making method. Background technique [0002] Metal arc spraying rapid molding technology is a molding technology based on "replication". It uses a physical model (or prototype) as the master mold, uses the arc as the heat source, and atomizes the molten metal material through high-speed airflow. , and make it spray and deposit on the surface of the master mold to form a dense metal coating with a certain thickness, that is, the mold shell. The mold shell accurately copies the shape of the prototype, and the required mold cavity is obtained. After the backing material pouring, demoulding, polishing and other post-processing processes are completed, the rapid manufacturing of the mold can be completed. Metal arc spraying molding process ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/24B22D23/00B22C9/10C23C4/06C23C4/18C23C4/131
Inventor 何仲云卢秉恒王智王伊卿唐一平
Owner XI AN JIAOTONG UNIV
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