A kind of production method of water-based flow-coating coating that prevents veining defects
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A production method and defect technology are applied in the production field of water-based flow coating to achieve the effects of uniform coating, good heat insulation and strong adhesion
Active Publication Date: 2017-09-22
共享新材料(山东)有限公司
View PDF10 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0006] The purpose of the present invention is to overcome the defects of the prior art and provide a unique method that can prevent veins, sticky sand, sand inclusions, improve the surface finish of castings, and the dimensional accuracy of castings, and has superior fluidity and good leveling. , good stability, no pollution, easy storage, a production method of water-based flow coating to prevent veining defects
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
[0029] Embodiment 1: The above coating is composed of the following components in parts by weight: zircon powder 5%, mullite 20%, flake graphite 5%, spodumene 3%, kyanite 3%, iron oxide red 20% , Composite suspending agent 2%, polyvinyl alcohol 0.5%, silica sol 0.2%, surfactant 0.05%, lignosulfonate 0.05%, defoamer 0.2%, sodium carboxymethylcellulose 0.5%, hollow microspheres 0.5%, water 40%.
Embodiment 2
[0030] Embodiment 2: The above coating is composed of the following components in parts by weight: 10% zircon powder, 15% mullite, 5% flake graphite, 5% spodumene, 5% kyanite, and 3% sepiolite , iron oxide red 15%, composite suspending agent 2.5%, polyvinyl alcohol 0.5%, silica sol 0.2%, surfactant 0.05%, lignosulfonate 0.05%, defoamer 0.2%, sodium carboxymethylcellulose 0.5%, hollow microspheres 1.0%, water 37%.
Embodiment 3
[0031] Embodiment 3: The above coating is composed of the following components in parts by weight: 15% zircon powder, 15% mullite, 5% flake graphite, 3% spodumene, 5% kyanite, and 15% iron oxide red , Composite suspending agent 3.0%, polyvinyl alcohol 0.5%, silica sol 0.4%, surfactant 0.05%, lignosulfonate 0.05%, defoamer 0.2%, sodium carboxymethylcellulose 0.3%, hollow microspheres 1.5%, water 36%.
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
Login to view more
Abstract
The present invention relates to a kind of production method of water-based flow-coating paint, especially relate to a kind of production method of water-based flow-coating paint that prevents veining defects, the method is bentonite and silicate quality pretreatment; PVA pretreatment; Add appropriate amount of water and treated bentonite slurry to the dispersion kettle, start stirring, then add defoamer, surfactant, thickener, binder, etc.; finally add the pretreated PVA solution, stir for several minutes; stir Adjust the speed to 500 r / min, add zircon powder, mullite, flake graphite, spodumene, kyanite, sepiolite, red iron oxide, and hollow microspheres to the dispersion kettle in sequence, and then add water reducing agent; After feeding, adjust the rotating speed to 1200 r / min, and disperse for 20 minutes; adjust the Baumé degree with water to an appropriate range; the method of the invention is unique, can prevent veins, sticky sand, sand inclusions, and improve the surface finish of castings and the dimensional accuracy of castings , and has excellent fluidity, good leveling, good stability, no pollution, and easy storage.
Description
technical field [0001] The invention relates to a production method of water-based flow coating, in particular to a production method of water-based flow coating for preventing vein defect. Background technique [0002] Veining defects are typical casting defects in the production of engine castings, and the cold box sand core has the greatest tendency to produce veining. Engine castings often have veining defects in water jackets, oil passages, and air passages. Such defects will hinder the gas-liquid vortex characteristics of the engine cavity, thereby affecting the working performance of the engine. Therefore, solving veining defects is very important for automotive castings such as cylinder blocks and cylinder heads. [0003] A large number of studies and long-term casting practice have shown that the root cause of veining defects on the casting surface is the cracking of the sand mold caused by the phase transformation and expansion of silica sand at 573 °C. At a temp...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more 
Login to view more