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A kind of production process of sand mold water-based paint for foundry

A water-based coating and production process technology, applied in casting molding equipment, casting molds, casting mold components, etc., can solve the problems of low coating strength, easy to produce hardening, thixotropy, poor paintability, etc.

Active Publication Date: 2015-10-28
共享新材料(山东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are some problems in the existing casting coatings in our country: organic solvents are needed for triggering, which is a potential threat to the health of on-site operators, unfriendly to the environment, generally low coating strength, thixotropy, brushability Poor, and prone to compaction during long-distance transportation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment one: a kind of production technology of casting sand mold water-based paint, it comprises the steps:

[0020] a. Pretreatment: Add 45kg of water, 3kg of tributyl phosphate, and 5kg of CMC to the dissolution tank to filter the insoluble matter through a filter. The whole process lasts for no less than 3 hours, and then stir evenly to dissolve them all;

[0021] b. Add 200 kg of water, 2 kg of sodium benzoate, 20 kg of sodium bentonite suspending agent, 2 kg of acetic acid, and 1.2 kg of xanthan gum to the stirring tank, turn on the electric stirring, and stir for 15-20 minutes at a speed of 1500 r / min;

[0022] c. Slowly add 680kg of white corundum, 2kg of sodium lignosulfonate, and 50kg of water to the stirring tank, and stir for 15-20 minutes at the same speed;

[0023] d. Depending on the dilution situation, add about 40kg of water, and the Baume degree of the adjusted paint should be above 95;

[0024] e. Transfer the paint prepared in the previous step t...

Embodiment 2

[0025] Embodiment two: a kind of production technology of casting sand mold water-based paint, it comprises the steps:

[0026] a. Pretreatment: Add 50kg of water, 2.5kg of tributyl phosphate, and 5.5kg of CMC into the dissolution tank; filter the insoluble matter with a filter; the whole process lasts for no less than 3 hours, then stir evenly to dissolve them all;

[0027] b. Add 200kg of water, 1.8kg of sodium benzoate, 25kg of sodium bentonite suspending agent, 2kg of acetic acid, and 1.4kg of xanthan gum to the stirring tank, turn on the electric stirring, and stir at a speed of 1500r / min for 15-20 minutes;

[0028] c. Slowly add 680kg of white corundum, 1.7kg of sodium lignosulfonate, and 60kg of water to the stirring tank, and stir for 15-20 minutes at the same speed;

[0029] d. Depending on the dilution situation, add about 45kg of water, and the Baume degree of the adjusted paint should be above 95;

[0030] e. Transfer the paint prepared in the previous step to the...

Embodiment 3

[0031] Embodiment three: a kind of production technology of casting sand mold water-based paint, it comprises the steps:

[0032] a. Pretreatment: Add 45kg of water and 2.8kg of tributyl phosphate to the dissolving tank, start stirring, slowly add 5.2kg of CMC and filter the insoluble matter with a filter, the whole process lasts for no less than 3 hours, then stir evenly to dissolve them all;

[0033] b. Add 200kg of water, 1.9kg of sodium benzoate, 23kg of sodium bentonite suspending agent, 2.2kg of acetic acid, and 1.45kg of xanthan gum into the stirring tank, turn on the electric stirring, and stir at a speed of 1500r / min for 15-20 minutes;

[0034] c. Slowly add 660kg of white corundum, 1.85kg of sodium lignosulfonate, and 65kg of water to the stirring tank, and stir for 15-20 minutes at the same speed;

[0035] d. Depending on the dilution situation, add about 40kg of water, and adjust the Baume degree of the coating to be above 95°Be;

[0036] e. Transfer the paint pre...

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Abstract

The invention relates to a manufacturing method in a production technique of paint for casting, in particular to a production technique of sand-type water based paint for casting, wherein the sand-type water based paint belongs to a casting accessory. The production technique comprises the following steps of: adding water, tributyl phosphate and CMC (carboxy methylated cellulose) in a dissolving pot firstly, stirring uniformly, dissolving the materials completely; filtering insoluble materials by a filter screen; adding water, sodium benzoate, a sodium base bentonite suspending agent, acetic acid and reducing glue in a stirring kettle, starting up electric stirring; slowly adding white corundum, sodium lignin sulfonate and water in the stirring kettle, stirring for 15-20min; adding water on the basis of the dilution situation, wherein the baum degree of the paint is higher than 95 after being stirred uniformly; transferring the paint prepared by the steps in a colloid mill, continuously milling for 2h, discharging and packaging into barrels to obtain the paint. The invention provides the novel production technique of the sand-type water based paint for casting, which has the following characteristics of environment friendliness, high coating strength and excellent painting property.

Description

technical field [0001] The invention relates to a production process of a casting coating, in particular to a production process of a casting sand water-based coating belonging to casting auxiliary materials. Background technique [0002] The coating for casting is to cover the surface of the cavity and the core to improve its surface refractoriness, chemical stability, resistance to liquid metal erosion, anti-sand sticking and anti-sticking properties. The casting auxiliary materials are collectively called casting molds coating. Among them, the casting coating used to improve the sand surface's anti-sticking sand and metal liquid erosion resistance is called sand coating, usually referred to as coating. Coating on the surface of the sand mold is an effective measure to obtain castings with a smooth surface, prevent defects such as sand sticking, sand inclusions, and sand holes, reduce sand falling and cleaning labor, and obtain the required surface structure of castings. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00
Inventor 张晓忠肖青国陈学更韩文
Owner 共享新材料(山东)有限公司
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