Unlock instant, AI-driven research and patent intelligence for your innovation.

Evanescent mould coating and preparation method thereof

A technology of lost foam and coating, applied in coatings, manufacturing tools, casting and molding equipment, etc., can solve the problem that the gas permeability, refractoriness and hot and cold strength of lost foam coatings fail to meet the requirements, and cannot meet the production of large lost foam castings. Expensive and other problems, to achieve the effect of good refractoriness, good hot and cold strength, good air permeability

Inactive Publication Date: 2013-09-25
杭州来氏铸造科技有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Nowadays, the lost foam coatings sold on the market are relatively expensive and cannot meet the production of large lost foam castings. The performance of lost foam coatings such as air permeability, refractoriness and cold and hot strength has not yet met the requirements.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of lost foam coating, is made up of the component of following parts by weight:

[0033] 38-42 parts of scaly graphite powder;

[0034] 58-62 parts of earthy graphite powder;

[0035] Active bentonite 4-6 parts;

[0036] High temperature refractory mud 9-11 parts;

[0037] 70-135 parts of water;

[0038] Rosin 3-5 parts;

[0039] 28-32 parts of white latex.

[0040] A preparation method of lost foam coating, comprising the following sequential steps:

[0041] (1) Mix scaly graphite powder, earthy graphite powder, activated bentonite and high-temperature refractory mud, add an appropriate amount of water to make a paste, and then put it in a mill for 4 hours of grinding, then take it out and seal it for storage ;

[0042] (2) Dilute the white latex and rosin with water, soak for 24 hours, stir to dissolve the white latex and rosin into the water, and prepare the solution;

[0043] (3) Put the paste obtained in step (1) and the solution obtained in step (2)...

Embodiment 2

[0049] A kind of lost foam coating, is made up of the component of following parts by weight:

[0050] 40 parts of scaly graphite powder;

[0051] 60 parts of earthy graphite powder;

[0052] 5 parts of active bentonite;

[0053] 10 parts of high temperature refractory mud;

[0054] 70-135 parts of water;

[0055] Rosin 4 parts;

[0056] 30 parts of white latex.

[0057] A preparation method of lost foam coating, comprising the following sequential steps:

[0058] (1) Mix scaly graphite powder, earthy graphite powder, activated bentonite and high-temperature refractory mud, add an appropriate amount of water to make a paste, and then put it in a mill for 4 hours of grinding, then take it out and seal it for storage ;

[0059] (2) Dilute the white latex and rosin with water, soak for 24 hours, stir to dissolve the white latex and rosin into the water to prepare a solution;

[0060] (3) Put the paste obtained in step (1) and the solution obtained in step (2) into a paint...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Provided are evanescent mould coating and a preparation method thereof. The preparation method of the evanescent mould coating comprises the following steps of step one, mixing 40 parts of scaly graphite powder, 60 parts of earthy graphite powder, 5 parts of activated bentonite, 10 parts of high-temperature refractory clay and 23-35 parts of water, grinding the mixture for 4 hours to obtain paste; step two, mixing 30 parts of acetic acid resin and 4 parts of rosin with 50-100 parts of water to obtain solution; and step three, putting 138-150 parts of paste and 84-134 parts of solution into a coating blender to obtain prepared evanescent mould coating. The preparation method of the evanescent mould coating has the advantage that the evanescent mould coating is prepared by the paste containing 40 parts of the scaly graphite powder, 60 parts of the earthy graphite powder, 5 parts of the activated bentonite, 10 parts of the high-temperature refractory clay and 23-35 parts of the water and the solution containing 30 parts of the acetic acid resin, 4 parts of the rosin and 50-100 parts of the water, so that the evanescent mould coating has good air permeability, good refractoriness and high cold and hot strength.

Description

technical field [0001] The invention relates to a lost foam coating and a preparation method thereof, in particular to a lost foam coating in the field of lost foam casting production and a preparation method thereof. Background technique [0002] During the production of lost foam castings, foam will generate a large amount of gas. If the air permeability of the coating is not good, a large number of pores will be produced in the castings produced, and the castings will be scrapped. If there is no good refractoriness, the casting will have sticky sand, which will cause difficulty in gold processing or even scrapping. If there is no good cold and hot strength, the coating on the lost foam will crack or peel off, resulting in sticky sand or coating interlayer, making the casting scrapped. [0003] Nowadays, the lost foam coatings sold in the market are relatively expensive and cannot meet the production of large lost foam castings. The properties of lost foam coatings such ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22C3/00
Inventor 史建伟
Owner 杭州来氏铸造科技有限公司