A rapid prototyping method for high-precision ester-cured water glass sand mold/core

A molding method and technology for solidifying water, applied in the directions of cores, mold components, casting molding equipment, etc., can solve the problems of low manufacturing accuracy, difficulty in recycling old sand, poor preparation effect, etc., and reduce processing energy consumption. , The effect of improving the reuse rate and shortening the manufacturing cycle

Inactive Publication Date: 2017-02-22
MAANSHAN SANCHUAN EQUIP TECHN & TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to solve the following problems: 1) the existing water glass sand mold / core needs to be molded, and the ester solidified water glass sand increases with the number of times of recycling, and the old sand recovery is difficult; 2) the existing sand mold / core is sprayed and solidified The manufacturing accuracy of the additive manufacturing method is not high; 3) the preparation effect is not good for sand molds / cores with high viscosity of binder or curing agent, and sand molds / cores whose performance changes significantly with time; a high-precision ester curing water is provided Rapid prototyping system and method for glass sand mold / core

Method used

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  • A rapid prototyping method for high-precision ester-cured water glass sand mold/core
  • A rapid prototyping method for high-precision ester-cured water glass sand mold/core

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Experimental program
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Embodiment 1

[0037] see figure 2, a rapid prototyping system of a high-precision ester solidified water glass sand mold / core of the present embodiment, including a box body 1, a material mixing device 2, a liquid distribution warehouse 31, a dripping device 33, a material spreading device 52, and a lifting table 73 and controller 8. The mixing device 2 and the liquid mixing chamber 31 are respectively arranged on the upper parts of both sides in the box body 1, wherein the mixing device 2 is equipped with mold / core sand and water glass, and the mixing device 2 is used to mold / core sand and water glass. The core sand and water glass are thoroughly mixed. The bottom of the mixing device 2 is provided with a material outlet 21 , and a material receiving platform 51 is provided below the material outlet 21 , and the uniformly mixed material 62 falls from the material outlet 21 onto the material receiving platform 51 . The spreading device 52 is located below the discharge port 21 and above ...

Embodiment 2

[0046] The rapid prototyping system of a kind of high-precision ester solidified water glass sand mold / core of the present embodiment is basically the same as embodiment 1, and its molding process is now briefly described as follows:

[0047] (1) Establish the CAD geometric entity model of the sand mold / core, and carry out layered discretization, generate the running trajectory file of the dripping device for each discrete layer, and import it into the controller of the dripping device through the data interface, and record the number of discrete layers n.

[0048] (2) Mix 80 parts of 70 / 140 mesh mullite sand with 5 parts of water glass with a modulus of 2.5 in the mixing device.

[0049] (3) Spread the mixed mold / core sand coated with water glass on the lifting workbench with the laying device.

[0050] (4) The compound organic ester of glycerol diacetate and glycerol monoacetate is dripped by the dripping device according to the first layer of discrete layer running track g...

Embodiment 3

[0053] The rapid prototyping system of a kind of high-precision ester solidified water glass sand mold / core of the present embodiment is basically the same as embodiment 1, and its molding process is now briefly described as follows:

[0054] (1) Establish the CAD geometric entity model of the sand mold / core, and carry out layered discretization, generate the running trajectory file of the dripping device for each discrete layer, and import it into the controller of the dripping device through the data interface, and record the number of discrete layers n.

[0055] (2) Mix 120 points of 70 / 140 mesh olivine sand with 4 parts of water glass with a modulus of 1.8 in the mixing device.

[0056] (3) Spread the mixed mold / core sand coated with water glass on the lifting worktable with a spreading device.

[0057] (4) The compound organic ester mixed with diethylene glycol diacetate, glycerol monoacetate and ethylene glycol monoacetate is dripped by the dripping device according to ...

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Abstract

The invention discloses a rapid prototyping system and method for a high-precision ester cured water glass sand mold / core, and belongs to the technical field of sand mold / core prototyping. The method comprises the following steps: firstly establishing a CAD geometry solid model of the sand mold / core, performing layered discretization, generating a moving trajectory file of each discrete level dripping device and guiding the moving trajectory file of each discrete level dripping device into a controller, and recording the number n of discrete layers; evenly mixing the mold / sand core with water glass by using a mixing device; flatly spreading the mold / core sand wrapped by the water glass on a lifting working platform by a spreading device; and dripping composite organic ester according to the extracted moving trajectory of a first discrete level by the dripping device, after the first discrete level is completed, enabling the lifting working platform to move down, sequentially completing the dripping working procedures of the follow-up discrete levels, curing for 1h to 8h, and taking the mold core out. The rapid prototyping system and method provided by the invention have the advantages of being capable of shortening the manufacturing cycle of the sand mold / core, improving the prototyping precision and performance, increasing the repeated utilization rate of used sand, and reducing the production cost.

Description

technical field [0001] The present invention relates to the technical field of sand mold / core forming, more specifically, relate to a kind of rapid prototyping method of high-precision ester-cured water glass sand mold / core, the method is especially suitable for the rapid prototyping of sand mold / core solidified with organic ester . Background technique [0002] Sodium silicate sand is the molding sand most likely to realize green casting production in the foundry industry in the 21st century. However, there are respective deficiencies in different water glass sand hardening processes at present. For example, ordinary hardened sodium silicate sand has problems such as high energy consumption, high labor intensity, and uneven baking degree inside and outside the sand mold / core; CO 2 Air blowing hardened water glass sand has defects such as poor collapsibility, difficult regeneration of old sand, and unstable hardening process; powder hardened water glass sand has the disadv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C9/10B22C1/20
CPCB22C1/188B22C9/02B22C9/10
Inventor 沈浩张龙王美李远才
Owner MAANSHAN SANCHUAN EQUIP TECHN & TECH CO LTD
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