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A method of producing automobile molds by lost foam casting process

A technology of lost foam casting and automotive molds, applied in the direction of manufacturing tools, foundries, tools, etc., can solve the problem of insufficient wear resistance and deformation resistance, improve hardness and tensile strength, control parameters, and enhance adhesion. effect of ability

Active Publication Date: 2020-11-03
柳州市顺昇机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for producing automobile molds by lost foam casting process in view of the problem that the wear resistance and deformation resistance of automobile stamping dies are not high enough to affect the use

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for producing automobile molds by the lost foam casting process, at least comprising the following steps:

[0035] a. Model making: According to the size required by the mold drawing, take the foam board and engrave it with a CNC machine tool to obtain a foam model;

[0036] b. Model drying: Take the foam model and bake it at 50°C for 55 hours to obtain a dry model;

[0037] c. Coating on the model: Take the coating on the dry model to form a 4mm thick coating. The number of coatings is 3 times. Baking is carried out after each coating. After the first coating, bake at 50°C After 30 hours, bake the coating at 50°C for 55 hours to obtain a film-coated model; the coating includes the following raw materials in parts by weight: 70 parts of quartz sand powder, 15 parts of flake graphite powder, 15 parts of bentonite, zirconium 16 parts of English powder, 10 parts of polystyrene and 10 parts of bauxite; the particle size of quartz sand powder is 300 mesh.

[0038]...

Embodiment 2

[0043] A method for producing automobile molds by the lost foam casting process, at least comprising the following steps:

[0044] a. Model making: According to the size required by the mold drawing, take the foam board and engrave it with a CNC machine tool to obtain a foam model;

[0045] b. Model drying: Take the foam model and bake it at 45°C for 45 hours to obtain a dry model;

[0046] c. Model coating: take the dry model coating to form a 2mm thick coating, the number of coatings is 2 times, spray dry ice powder immediately after each coating, and then bake, after the first coating Bake at 45°C for 20 hours, and then bake at 45°C for 45 hours after applying the paint to obtain a film model; the paint includes the following raw materials in parts by weight: 50 parts of quartz sand powder, 5 parts of flake graphite powder , 5 parts of bentonite, 4 parts of zircon powder, 1 part of polystyrene, 1 part of bauxite, 5 parts of calcium fluoride, 13 parts of plaster powder, 3 p...

Embodiment 3

[0055] A method for producing automobile molds by the lost foam casting process, at least comprising the following steps:

[0056] a. Model making: According to the size required by the mold drawing, take the foam board and engrave it with a CNC machine tool to obtain a foam model;

[0057] b. Model drying: Take the foam model and bake it at 46°C for 48 hours to obtain a dry model;

[0058] c. Model coating: take the dry model coating to form a 2.5mm thick coating, the number of coatings is 2 times, spray dry ice powder immediately after each coating, and then bake, finish the coating for the first time Then bake at 46°C for 22 hours, and then bake at 46°C for 48 hours after applying the coating to obtain a film-coated model; the coating includes the following raw materials in parts by weight: 55 parts of quartz sand powder, 8 parts of flake graphite powder 7 parts of bentonite, 7 parts of zircon powder, 3 parts of polystyrene, 3 parts of bauxite, 7 parts of calcium fluoride,...

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Abstract

The invention provides a method for producing a car mold through a lost foam casting process, and particularly relates to the technical field of car mold manufacturing. The lost foam casting method isadopted for preparing the car mold, after a foam model is coated with a coating, shock chilling drying is carried out, the coating is evenly and stably attached to the model, through a turnover sandadding vibration compaction method of a sand box, quartz sand is filled fully, and is not prone to collapse and burning, the method is simple and easy to operate, the parameters are controllable, andthe method is suitable for large-scale production. The prepared car mold has two types, one type is composed of an upper mold and a lower mold, the other type is composed of a female mold, a male moldand a blank holder, the hardness reaches above 310 HB, the tensile strength reaches above 370 MPa, and the two types both have the higher wear-resistance and anti-deforming properties.

Description

【Technical field】 [0001] The invention relates to the technical field of automobile mold manufacturing, in particular to a method for producing automobile molds by a lost foam casting process. 【Background technique】 [0002] Automobile mold refers to the mold used in the field of automobiles. It is known as the "mother of the automobile industry". More than 90% of the parts in automobile production need to be formed by molds. When a car appears in front of you, the body that occupies the largest area becomes the iconic assembly of the car and is the image feature of every car. Most of the metal panels, including the car body, are basically stamped with stamping dies, so the quality of stamping dies directly affects the assembly efficiency of automobiles and the production efficiency of automobile assembly lines. [0003] With the continuous optimization of the industrial structure of my country's automobile mold industry and the continuous advancement of technology, the pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/22B22C7/02B22C9/04B22C3/00B22C5/04B22C5/00C22C38/22C22C38/02C22C38/04C22C38/60B22D47/02
CPCB22C5/00B22C5/0409B22C7/02B22C9/04B22C9/22B22C23/00B22D47/02C22C38/002C22C38/02C22C38/04C22C38/22C22C38/60
Inventor 杜厚枢覃诱硬杜勇卫
Owner 柳州市顺昇机械有限公司
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