Surface treatment method of wood female mold body of electric arc spraying mold

A technology of arc spraying and surface treatment, which is applied in the direction of surface coating liquid devices, coatings, epoxy resin coatings, etc., which can solve the problems of difficult removal of metal shells, destructive demoulding, and time-consuming, etc. Achieve the effects of saving demoulding time, small surface damage and improving production efficiency

Active Publication Date: 2018-09-07
NAT INST CORP OF ADDITIVE MFG XIAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the porous surface and large roughness of the wooden material, when the metal alloy is directly sprayed on the surface of the wooden material master mold, the bonding force between the metal shell and the surface of the master mold is relatively large due to the inlay, making it extremely difficult for the metal mold shell to be removed from the master mold. Surface removal often requires manual removal of the metal shell from the surface of the master mold bit by bit. This process consumes a lot of time and belongs to "destructive demoulding", resulting in waste of cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Grinding off the burrs on the surface of the master mold, and disposing of debris on the surface;

[0032] 2) Prepare epoxy resin glue solution at 23°C, the epoxy glue solution is calculated by weight ratio, and the proportion is epoxy resin E51: A50 modified amine curing agent: epoxy diluent HK-66 = 100:40: 10;

[0033] 3) Spray a layer of prepared epoxy resin glue on the surface of the master mold, heat it at 120°C for 3 minutes, take it out and cool it to room temperature;

[0034] 4) Repeat step 3) twice;

[0035] 5) Spray the emulsified simethicone release agent evenly on the surface of the mold, and heat it at 100°C for 15 minutes, then take out the mold and cool it down to room temperature;

[0036] 6) Spray a layer of polyurethane resin on the surface after spraying the release agent, and dry it for 15 minutes at a temperature of 25°C and a humidity of 75%;

[0037] 7) After the polyurethane resin is dry, the surface treatment of the entire wooden master m...

Embodiment 2

[0039] 1) Grinding off the burrs on the surface of the master mold, and disposing of debris on the surface;

[0040] 2) Prepare epoxy resin glue solution at 23°C, the epoxy glue solution is calculated by weight ratio, and the proportion is epoxy resin E51: A50 modified amine curing agent: epoxy diluent HK-66 = 100:40: 10;

[0041] 3) Spray a layer of prepared epoxy resin glue on the surface of the master mold, and harden at 25°C for not less than 8 hours;

[0042] 4) Repeat step 3) twice;

[0043] 5) Spray the emulsified simethicone release agent evenly on the surface of the mold, and dry it at 25°C for 30 minutes;

[0044] 6) Spray a layer of polyurethane resin on the surface after spraying the release agent, and dry it for 15 minutes at a temperature of 25°C and a humidity of 75%;

[0045] 7) After the polyurethane resin is dry, the surface treatment of the entire wooden master mold for electric arc spraying is completed.

Embodiment 3

[0047] 1) Grinding off the burrs on the surface of the master mold, and disposing of debris on the surface;

[0048] 2) Prepare epoxy resin glue solution at 23°C, the epoxy glue solution is calculated by weight ratio, and the proportion is epoxy resin E51: A50 modified amine curing agent: epoxy diluent HK-66 = 100:40: 10;

[0049] 3) Spray a layer of prepared epoxy resin glue on the surface of the master mold, heat it at 90°C for 15 minutes, take it out and cool it to room temperature;

[0050] 4) Repeat step 3) twice;

[0051] 5) Spray the emulsified simethicone release agent evenly on the surface of the mold, heat at 100°C for 15 minutes and cool to room temperature;

[0052] 6) Spray a layer of polyurethane resin on the surface after spraying the release agent, and dry it for 15 minutes at a temperature of 25°C and a humidity of 75%;

[0053] 7) After the polyurethane resin is dry, the surface treatment of the entire wooden master mold for electric arc spraying is complete...

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PUM

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Abstract

The invention discloses a surface treatment method of a wood female mold body of an electric arc spraying mold. An epoxy resin glue solution is sprayed on the surface of the mold in advance, then a layer of polyurethane protection film with good temperature resistance is sprayed on the surface of an epoxy resin layer, and a layer of release agent is sprayed between the polyurethane and the epoxy resin layer to reduce the binding force between the polyurethane and epoxy resin. The surface of the mold treated through the surface treatment method is smooth and clean; after electric arc spraying is completed, the demolding efficiency is high, 70-95% of the demolding time can be saved, and the production efficiency is improved; and damage to the surface of the wood female mold body is small, thus the wood female mold body can be reused, and the cost is saved advantageously.

Description

technical field [0001] The invention relates to a surface treatment method for a wooden master mold of an electric arc spraying mold, which belongs to the field of mold surface treatment. Background technique [0002] Metal arc spraying rapid tooling technology uses the physical model (or prototype) as the master model, and deposits a certain thickness of dense metal coating on the surface of the master model by arc spraying, that is, the mold shell. The mold shell accurately copies the shape of the prototype, and the required mold cavity is obtained. After completing the post-processing processes such as backing reinforcement, shell demoulding, and surface polishing, the rapid manufacturing of the mold can be completed. The master model can be made of plaster, wood and other materials that are convenient for numerical control processing, or it can be used as a rapid prototype or a real product. [0003] Compared with other master mold materials, wood materials are easy to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/00B05D7/06C09D163/00C09D175/04
CPCB05D7/06B05D7/546B05D2503/00B05D2504/00C09D163/00C09D175/04B05D2420/01B05D2420/02
Inventor 卢秉恒吴华英李昭勋成勇王彦丽贺琛王晓王宁宁任娟娟
Owner NAT INST CORP OF ADDITIVE MFG XIAN
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