CN103264140A - Dedicated core coating for manufacturing walking machinery motor cover, manufacturing method and use method thereof - Google Patents
Dedicated core coating for manufacturing walking machinery motor cover, manufacturing method and use method thereof Download PDFInfo
- Publication number
- CN103264140A CN103264140A CN2013100692224A CN201310069222A CN103264140A CN 103264140 A CN103264140 A CN 103264140A CN 2013100692224 A CN2013100692224 A CN 2013100692224A CN 201310069222 A CN201310069222 A CN 201310069222A CN 103264140 A CN103264140 A CN 103264140A
- Authority
- CN
- China
- Prior art keywords
- coating
- loam core
- motor cover
- manufacturing
- special
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses a dedicated core coating for manufacturing a walking machinery motor cover, a manufacturing method and a use method thereof. The core coating is composed of: based on 100 wt% of mullite, 70-30 wt % graphite, 1-3 wt% of a resin binder, 8 wt% of an attapulgite suspending agent, 40-60 wt% of ethanol, and 5 wt% of water. The invention has the advantages that: by using the core coating, a, during casting a cast iron, suspension is good, when the coating is painted and attached to the core, the phenomenon of uneven coating does not appear, a casting flow channel is smooth; b, sintering is not easy at high temperature, part of the core components do not remain in the flow channel, the smooth of the flow channel is good; and c, at high temperature, the coating graphite component is not easy to open up and does not form veins, and the core is of high quality.
Description
Technical field
The present invention relates to a kind of cores from casting special coating.Be specifically related to component, manufacture method and the using method of this coating.
Background technology
In the sand casting, in order to improve the surface quality of foundry goods, unobstructed will be at sand mold loam core surface-coated one deck fireproof coating, to improve performances such as its surperficial hear resistance, chemical stability, anti-molten metal erosion, anti-stick grittiness.China is the country that fireproof coating is cast in practicality the earliest in the world, and the use of coating can be traced back to B.C. Han dynasty.In recent years, along with industrialized development, require to improve constantly at surface quality of continuous castings, particularly the control system of walking machine or critical component are more and more higher to the requirement in loam core.It is to prevent that foundry goods from producing blemish such as scab, burning into sand, sand holes, pore, improves surface quality of continuous castings, reduces knockout and cleaning work amount, improves work situation, reduces casting cost, the effective technology measure of increasing economic efficiency.Become important tool indispensable in the casting industry.
In the utilization in loam core, be unable to do without coating, the effect of coating, through summary, specific as follows:
(1), prevents foundry goods scab
Prevent that cast(ing) surface from producing the scab defective is one of important function of coating.A large amount of spaces that refractory coating can enclosed type, wicking surface exists, higher barrier one deck densification, fire-resistant, that heat chemistry is stable is provided, can effectively stop infiltration or the thermal chemical reaction of molten metal, thus tool wear when the long-living cleaning amount of labour that does not reduce foundry goods that prevents foundry goods penetration and chemical scab and follow-up machined.
(2), reduce the loam core surface roughness
The core surface that has applied coating is Paint Gloss, fine and close, and is difficult wetting by molten metal, so can reduce the surface roughness of foundry goods greatly.With the foundry goods that the sand mold that has applied coating is produced, its surface roughness generally can improve the 1-2 level when using coating.
(3), reinforce the sand mold surface
Have the performance intensity that certain intensity and infiltrative coating can obviously improve sand mold, core, improved-type, core scouring capability reduces molten metal to the heat radiation of sand mold, thereby prevents or reduce because defectives such as the foundry goods sand holes that sand washing or thermal expansion cause and burnings into sand.
(4), shielding and buffer action
Fine and close coating can be set up its barrier together between sand mold and molten metal, thereby prevents or slow down the thermal decomposition product of writing from memory resin sand to the harmful effect of cast(ing) surface.
But present coating is because the defective of composition, following shortcoming: a arranged, when iron casting, because suspension is bad, when being coated on the loam core, the inhomogeneous phenomenon of coating can occur, influences the slickness of foundry goods runner; B, high temperature easy-sintering, the part in loam core become branch to be trapped in the runner, influence the smoothness of runner; Under c, the high temperature, the graphite composition of coating is opened easily and is risen, and forms wood grain, influences the loam core quality.
Summary of the invention
Main task of the present invention is to provide the special-purpose loam core of a kind of iron castings coating, specifically is the whiting of a kind of coating good uniformity, anti-sintering.
In order to solve the problems of the technologies described above, the invention provides the special-purpose loam core of a kind of manufacturing walking machine motor cover coating, it is characterized in that: the component of described loam core coating is as follows:
Based on mullite 100wt%, graphite 70-30wt%, resinoid bond 1-3wt%, attapulgite suspending agent 8wt%, ethanol 40-60wt%, water 5wt%.
Further, described resinoid bond is butyral resin or phenolic aldehyde.
Further, described resinoid bond is 2wt%.
Further, described mullite is the 200-300 order.
Further, described graphite is the 200-300 order.
The present invention also provides a kind of preparation method of making the special-purpose loam core of walking machine motor cover coating, its innovative point is: a, mullite and graphite stirring at normal temperature, do and mixed 10 minutes, b, water 5wt%, the stirring at normal temperature attapulgite, add the mixture in a step evenly again, stirred 5 minutes, be mixed into paste; C, resinoid bond, ethanol are added the b step, normal temperature mixed 40 minutes.
The present invention also provides a kind of using method of making the special-purpose loam core of walking machine motor cover coating, its innovative point is: step is as follows: coating is diluted to Baume degrees 10-12 ° with ethanol, with loam core dip-coating 5-10 second at normal temperatures, isolated natural air drying then 2 hours, dried by the fire 2-3 hour in airtight baking oven with 200 ℃ temperature, take out, cooling makes the finished product loam core naturally.
The invention has the advantages that: adopt this loam core coating, have a, when iron casting, suspension is good, when being coated on the loam core, the inhomogeneous phenomenon of coating can not occur, the slickness of foundry goods runner; B, high temperature is easy-sintering not, and the part composition in loam core can not be trapped in the runner, and the smoothness of runner is good; Under c, the high temperature, the graphite composition of coating is not easy to open and rises, and does not form vein, loam core quality height.
The specific embodiment
Embodiment 1
Make the special-purpose loam core of walking machine motor cover coating, the component of loam core coating is as follows:
Based on 200 order mullite 100wt%, 200 order graphite 70wt%, butyral resin binding agent 3wt%, attapulgite suspending agent 8wt%, ethanol 60wt%, water 5wt%.
Make the preparation method of the special-purpose loam core of walking machine motor cover coating, step: a, mullite and graphite stirring at normal temperature are done and were mixed 10 minutes, b, water 5wt%, the stirring at normal temperature attapulgite adds the mixture in a step after evenly again, stirred 5 minutes, and be mixed into paste; C, resinoid bond, ethanol are added the b step, normal temperature mixed 40 minutes.
Loam core coating is used, and step is as follows: coating is diluted to Baume degrees 10-12 ° with ethanol, with loam core dip-coating 5-10 second at normal temperatures, isolated natural air drying then 2 hours, dried by the fire 2-3 hour in airtight baking oven with 200 ℃ temperature, take out, cooling makes the finished product loam core naturally.
The loam core that this step makes, have suspend bad, when being coated on the loam core, the phenomenon that no coating is inhomogeneous, the foundry goods runner of producing is smooth; Carrying out 1080 ℃ conventional high temperature cast, the loam core is sintering not, and the smoothness of foundry goods runner is good; Solved under the high temperature, the graphite composition of coating is opened easily and is risen, and forms wood grain, influences the problem of loam core quality.
Embodiment 2
The special-purpose loam core of a kind of manufacturing walking machine motor cover coating, the component of described loam core coating is as follows:
Based on 300 order mullite 100wt%, 300 order graphite 60wt%, phenolic resin adhesive 2wt%, attapulgite suspending agent 8wt%, ethanol 50wt%, water 5wt%.
Make the preparation method of the special-purpose loam core of walking machine motor cover coating, a, mullite and graphite stirring at normal temperature are done and were mixed 10 minutes, b, water 5wt%, and the stirring at normal temperature attapulgite adds the mixture in a step after even again, stirs 5 minutes, is mixed into paste; C, resinoid bond, ethanol are added the b step, normal temperature mixed 40 minutes.
The using method of loam core coating, step is as follows: coating is diluted to Baume degrees 10-12 ° with ethanol, with loam core dip-coating 5-10 second at normal temperatures, isolated natural air drying then 2 hours, dried by the fire 2-3 hour in airtight baking oven with 200 ℃ temperature, take out, cooling makes the finished product loam core naturally.
The loam core that this step makes, have suspend bad, when being coated on the loam core, the phenomenon that no coating is inhomogeneous, the foundry goods runner of producing is smooth; Carrying out 1080 ℃ conventional high temperature cast, the loam core is sintering not, and the smoothness of foundry goods runner is good; Solved under the high temperature, the graphite composition of coating is opened easily and is risen, and forms wood grain, influences the problem of loam core quality.
Claims (7)
1. make the special-purpose loam core of walking machine motor cover coating for one kind, it is characterized in that: the component of described loam core coating is as follows: based on mullite 100wt%, and graphite 70-30wt%, resinoid bond 1-3wt%, attapulgite suspending agent 8wt%, ethanol 40-60wt%, water 5wt%.
2. the special-purpose loam core of a kind of manufacturing walking machine motor cover according to claim 1 coating, it is characterized in that: described resinoid bond is butyral resin or phenolic aldehyde.
3. the special-purpose loam core of a kind of manufacturing walking machine motor cover according to claim 1 coating, it is characterized in that: described resinoid bond is 2wt%.
4. the special-purpose loam core of a kind of manufacturing walking machine motor cover according to claim 1 coating, it is characterized in that: described mullite is the 200-300 order.
5. the special-purpose loam core of a kind of manufacturing walking machine motor cover according to claim 1 coating, it is characterized in that: described graphite is the 200-300 order.
6. a preparation method of making the special-purpose loam core of walking machine motor cover coating is characterized in that: a, mullite and graphite stirring at normal temperature, dried mixing 10 minutes;
B, water 5wt%, the stirring at normal temperature attapulgite adds the mixture in a step after evenly again, stirs 5 minutes, is mixed into paste; C, resinoid bond, ethanol are added the b step, normal temperature mixed 40 minutes.
7. using method of making the special-purpose loam core of walking machine motor cover coating, it is characterized in that: step is as follows: coating is diluted to Baume degrees 10-12 ° with ethanol, with loam core dip-coating 5-10 second at normal temperatures, isolated natural air drying then 2 hours, dried by the fire 2-3 hour in airtight baking oven with 200 ℃ temperature, take out, cooling makes the finished product loam core naturally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100692224A CN103264140A (en) | 2013-03-05 | 2013-03-05 | Dedicated core coating for manufacturing walking machinery motor cover, manufacturing method and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100692224A CN103264140A (en) | 2013-03-05 | 2013-03-05 | Dedicated core coating for manufacturing walking machinery motor cover, manufacturing method and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103264140A true CN103264140A (en) | 2013-08-28 |
Family
ID=49007826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100692224A Pending CN103264140A (en) | 2013-03-05 | 2013-03-05 | Dedicated core coating for manufacturing walking machinery motor cover, manufacturing method and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103264140A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040992A (en) * | 2016-08-15 | 2016-10-26 | 合肥江淮铸造有限责任公司 | Casting sand core paint dipping process |
| CN106077499A (en) * | 2016-08-15 | 2016-11-09 | 合肥江淮铸造有限责任公司 | A kind of bell housing core dipping process |
| CN109317617A (en) * | 2018-11-29 | 2019-02-12 | 芜湖新兴新材料产业园有限公司 | Sand circle and preparation method thereof suitable for lost foam casting process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847336A (en) * | 2006-04-07 | 2006-10-18 | 沈阳金安铸造材料厂 | Light-colored alcohol-base paint |
| CN101088660A (en) * | 2007-07-13 | 2007-12-19 | 沈阳铸造研究所 | Light-color cast iron paint with high aluminium polycrystalline composite aggreagte |
| CN101642796A (en) * | 2009-08-28 | 2010-02-10 | 深圳市景鼎现代科技有限公司 | Formula and preparation process of alcohol group nanometer composite and surface modified dry powder mold paint |
| CN102049464A (en) * | 2011-01-26 | 2011-05-11 | 东风汽车有限公司 | Special coating for full mold casting and preparation method thereof |
| CN102397982A (en) * | 2011-11-29 | 2012-04-04 | 朱小英 | Sand casting water-based coating |
-
2013
- 2013-03-05 CN CN2013100692224A patent/CN103264140A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1847336A (en) * | 2006-04-07 | 2006-10-18 | 沈阳金安铸造材料厂 | Light-colored alcohol-base paint |
| CN101088660A (en) * | 2007-07-13 | 2007-12-19 | 沈阳铸造研究所 | Light-color cast iron paint with high aluminium polycrystalline composite aggreagte |
| CN101642796A (en) * | 2009-08-28 | 2010-02-10 | 深圳市景鼎现代科技有限公司 | Formula and preparation process of alcohol group nanometer composite and surface modified dry powder mold paint |
| CN102049464A (en) * | 2011-01-26 | 2011-05-11 | 东风汽车有限公司 | Special coating for full mold casting and preparation method thereof |
| CN102397982A (en) * | 2011-11-29 | 2012-04-04 | 朱小英 | Sand casting water-based coating |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106040992A (en) * | 2016-08-15 | 2016-10-26 | 合肥江淮铸造有限责任公司 | Casting sand core paint dipping process |
| CN106077499A (en) * | 2016-08-15 | 2016-11-09 | 合肥江淮铸造有限责任公司 | A kind of bell housing core dipping process |
| CN109317617A (en) * | 2018-11-29 | 2019-02-12 | 芜湖新兴新材料产业园有限公司 | Sand circle and preparation method thereof suitable for lost foam casting process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104119095B (en) | A kind of sintering metal composite product and preparation method thereof | |
| CN103394671B (en) | The preparation technology of lost foam casting potassium steel abrasive-resistant composite surface material | |
| CN103990764B (en) | A kind of casting sand core mending paste and preparation method thereof | |
| CN106238670B (en) | Foundry facing and preparation method and application | |
| CN103962509A (en) | Exothermic insulating riser material and preparation method thereof | |
| CN104014719B (en) | A kind of high-performance alcohol base casting coatings and preparation method thereof | |
| CN102836952A (en) | Resin sand type casting coating and preparation method thereof | |
| CN109759543A (en) | A kind of copper casted sculpture method for casting production | |
| CN102240776A (en) | Coating for lost mould cast steel and manufacture method thereof | |
| CN103506566A (en) | coating for lost foam casting and preparation method thereof | |
| CN104276829B (en) | Suppress the stemming of iron mouth splash | |
| CN103264140A (en) | Dedicated core coating for manufacturing walking machinery motor cover, manufacturing method and use method thereof | |
| CN106270381B (en) | A method of airspace engine TiAl alloy bend pipe casting is prepared with integral type wax-pattern | |
| CN108160928A (en) | A kind of resin sand core manufacturing craft | |
| CN104475665A (en) | Expandable graphite coating and manufacturing method thereof | |
| CN111410519A (en) | Aluminum titanate-added Al2O3-C sliding brick and production method thereof | |
| CN105642821A (en) | High-temperature-resistant environment-friendly metal casting coating and preparation method thereof | |
| CN107414016A (en) | A kind of cast paint for overlay film sand mold and preparation method thereof | |
| CN104209455B (en) | A kind of refractory aggregate and consisting of stainless steel cast paint and preparation method thereof | |
| CN104289663B (en) | A kind of high temperature resistant repair paint | |
| CN103084540B (en) | A kind of lost foam paint compound method for casting heat-resistant steel or wear-resisting alloy steel | |
| CN107685130A (en) | The water base environmental protection coating material of casting mold | |
| KR20110106979A (en) | THE MULLITE·CORUNDUM WASHES FOR CASTING MOULD | |
| CN104942220A (en) | Thermo-curing core-making process by use of inorganic binder | |
| CN104455349A (en) | Manufacturing method of magnesium alloy transmission box with ultrahigh corrosion resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130828 |
|
| RJ01 | Rejection of invention patent application after publication |