CN103008534A - Novel heat insulation multilayer coating for common medium carbon steel casting in metal casting production - Google Patents

Novel heat insulation multilayer coating for common medium carbon steel casting in metal casting production Download PDF

Info

Publication number
CN103008534A
CN103008534A CN2012105828014A CN201210582801A CN103008534A CN 103008534 A CN103008534 A CN 103008534A CN 2012105828014 A CN2012105828014 A CN 2012105828014A CN 201210582801 A CN201210582801 A CN 201210582801A CN 103008534 A CN103008534 A CN 103008534A
Authority
CN
China
Prior art keywords
coating
adiabatic
carbon steel
subbing
common medium
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
Application number
CN2012105828014A
Other languages
Chinese (zh)
Inventor
刘志明
吕光哲
赵岩
刘德慧
周欣
刘研
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liaoning Institute of Science and Technology
Original Assignee
Liaoning Institute of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Liaoning Institute of Science and Technology filed Critical Liaoning Institute of Science and Technology
Priority to CN2012105828014A priority Critical patent/CN103008534A/en
Publication of CN103008534A publication Critical patent/CN103008534A/en
Pending legal-status Critical Current

Links

Abstract

The invention discloses a novel heat insulation multilayer coating for common medium carbon steel casting in metal casting production and a using method thereof. The novel heat insulation multilayer coating is characterized in that a technology for coating the multilayer coating on the surface of a metal cavity is innovatively adopted, the coating layer consists of a bottom coating and a surface coating, wherein the bottom layer adopts a coating with excellent heat insulation performance; and the surface layer adopts a coating with high refractoriness and high chemical burnt-on sand resistance. The novel heat insulation multilayer coating has the advantages that the requirements on good heat insulation effect and excellent chemical burnt-on sand resistance in the process of metal casting production of the common medium carbon steel casting can be simultaneously met, the defects that the molten steel has short run, cold shut, crack and the like in a metal mold due to high cooling speed are overcome, and the problem that the casting is difficult to clean and machine due to frequent surface chemical and physical sand adhesion of the steel casting is solved. The service life of the metal mold is prolonged.

Description

Permanent mold casting production common medium-carbon steel foundry goods is with novel adiabatic complex layer coating
Technical field
The present invention relates to a kind of foundry facing and using method thereof, particularly a kind of coating for metal mold casting and using method thereof relate to the coating that a kind of metal mold being used for by permanent mold casting production common medium-carbon steel foundry goods applies specifically.
Background technology
The characteristics of permanent mold casting are steady quality, dimensional accuracy higher (being generally the CT7-9 level), the casting gradients of producing foundry goods and allowance is less, can save than sand casting 15% ~ 30% liquid metal consumption.Research and development novel metal mold casting coating in the service life of improving metal mold, meets China to the requirement of Foundry Production low-carbon environment-friendly, economical production.
At present, steel-casting is produced in China's permanent mold casting, the general single single layer coating of performance that adopts, such as the insulation effect that generally adopts refractory powder preferably, because the porous of adiabatic powder, the coating surface strength ratio is lower, and Paint Falling occurs when being everlasting cast, make foundry goods produce burning into sand, generation is glued type and is destroyed the metal mold surface.And the good general refractoriness of material of effect of heat insulation is inadequate, even for the production of small casting steel, also easily produces chemical scab, affects surface quality of continuous castings.If adopt the coating that is difficult for producing chemical scab, the insulation effect of coating is bad, liquid metal is the cooled and solidified speed in metal mold, foundry goods easily produces the defectives such as misrun, cold shut, cracking, therefore, general single layer coating can't satisfy the good requirement of the good and anti-chemical scab ability of insulation effect simultaneously.China is applied to the research of cast steel part since 20 century 70 metal molds, but less about the research of such cast paint aspect, there are no patent disclosure.Mostly be sand casting and lost foam casting about steel-casting with the patent of cast paint, and be not suitable for permanent mold casting common medium-carbon steel foundry goods.The external general water-cooled metal mould cast steel part that adopts still because metal mold is subject to strong chilling and shock heating effect, makes its service life generally lower.
Summary of the invention
The purpose of this invention is to provide a kind of thermal insulation and good complex layer coating of high-temperature stability that can satisfy the requirement of permanent mold casting common medium-carbon steel foundry goods.
For achieving the above object, adiabatic complex layer coating of the present invention is comprised of subbing and surface coating material two parts, and the contained composition material of subbing and mass percent are:
Jilin diatomite 17%~23%
Lithium bentonite 5%~7%
Ludox 3%~5%
AEO (JFC) 1%~2%
Water surplus;
The contained composition material of surface coating material and mass percent are:
Zirconium English powder 15%~18%
Lithium bentonite 4%~6%
Ludox 4%~5%
AEO (JFC) 1%~2%
Methyl alcohol or ethanol surplus.
Coating is poured solid-state composition material in the container that liquid composition material is housed into according to prescription in using respectively preparation in front 12 hours, stirs more than 30 minutes, then adds Ludox and AEO (JFC) and stirs 10 minutes again, and sealing is deposited stand-by.
Described Jilin diatomite need to carry out calcination process, and roasting technique is: at first, be heated to 200 ℃ by room temperature, be 2 hours heat time heating time, is incubated 1 hour; Then, be heated to 400 ℃ by 200 ℃, be 1 hour heat time heating time, is incubated 1 hour; At last, be heated to 800 ℃ by 400 ℃, be 2 hours heat time heating time, is incubated 1 hour.
Described Jilin diatomite needs air-flow crushing after calcination process, the size distribution after the pulverizing is at 5 μ m~15 μ m.
The grade of described zirconium English powder is 1 grade.
Described subbing and surface coating material performance should meet the requirement of table 1.
The properties of table 1 coating
The using method of adiabatic complex layer coating of the present invention is: coating will fully stir before use, adopts craft or compressed air type blackwash sprayer to apply.At first apply subbing, the metal mold temperature is controlled at 180 ℃~200 ℃ during coating, and coating layer thickness is controlled at 1.0mm~2.0mm; Then apply surface coating material, adopt the ignition way dry solidification; Metal mold behind the coating coating re-uses after 1~1.5 hour 120 ℃~140 ℃ insulations.The each coating of subbing can be poured into a mould 3~5 times, but must check before each cast, as finding in time coating of local shedding.
The present invention has following advantage: the present invention is according to cast steel fusing point height and the high characteristics of pouring temperature, adopted to innovation the complex layer coating technology, superficial layer adopts refractoriness height, the good coating of anti-chemical scab, bottom adopts the coating with good heat-insulating property, make coating have preferably combination property, because the surface strength of the complex layer coating of invention is high, when cast, be difficult for coming off, foundry goods does not produce the problems such as burning into sand, the mold cavity surface of also having avoided simultaneously metal mold directly and liquid metal occur to merge and the metal mold destruction that causes.Both solved liquid metal cooled and solidified speed in metal mold, easily produce the problem of the defectives such as misrun, cold shut, cracking, solved again the recurrent surface chemistry of steel casting surface and physics scab, cause casting cleaning and can't direct mechanical the problem of processing.Can improve the service life of metal mold.
The specific embodiment
In order to deepen the understanding of the present invention, the present invention is described in further detail below in conjunction with embodiment, and this embodiment only is used for explaining the present invention, does not consist of the restriction to protection domain of the present invention.
A kind of adiabatic complex layer coating that can be used for permanent mold casting production common medium-carbon steel foundry goods, the subbing of this coating is calculated in mass percent by following component and forms: Jilin diatomite 1800g, lithium bentonite 700g, Ludox 500g, AEO (JFC) 100g, water 6900g.Surface coating material is calculated in mass percent by following component and forms: zirconium English powder 1700g, lithium bentonite 600g, Ludox 400g, AEO (JFC) 100g, ethanol 7200g.
Coating is poured solid feed in the container that liquid material is housed into according to prescription in using respectively preparation in front 12 hours, adopts the agitator mechanical agitation 30 minutes, then adds Ludox and AEO (JFC) and stirs 10 minutes again, and sealing is deposited.
Coating adopts the compressed air type blackwash sprayer to spray before use through fully stirring, and at first sprays subbing, and the metal mold temperature is controlled at 180 ℃ during spraying, and coating layer thickness is 1.5mm; Then spray surface coating material, adopt the ignition way dry solidification; Metal mold behind the sprayed coating is poured into a mould after 1.5 hours 120 ℃ of insulations.
Cast is the Mayari processing and manufacturing with metal mold, the vertical-parting face, casting quality is the common medium-carbon steel foundry goods of 3.8kg, actual cast shows: subbing is cracking and coming off not substantially, foundry goods does not produce the defectives such as low-carbon martensite and misrun, cold shut, foundry goods inside is without burning into sand, and the surface is without chemical scab, and surface quality reaches CT7.Percent defective can be controlled in below 5%.

Claims (9)

1. an adiabatic complex layer coating that is used for permanent mold casting production common medium-carbon steel foundry goods is characterized in that dope layer is comprised of subbing and surface coating material two parts, and the contained composition material of subbing and mass percent are:
Jilin diatomite 17%~23%
Lithium bentonite 5%~7%
Ludox 3%~5%
AEO (JFC) 1%~2%
Water surplus;
The contained composition material of surface coating material and mass percent are:
Zirconium English powder 15%~18%
Lithium bentonite 4%~6%
Ludox 4%~5%
AEO (JFC) 1%~2%
Methyl alcohol or ethanol surplus.
2. an adiabatic complex layer coating that is used for permanent mold casting production common medium-carbon steel foundry goods is characterized in that can be used for permanent mold casting common medium-carbon steel foundry goods.
3. adiabatic complex layer coating that is used for permanent mold casting production common medium-carbon steel foundry goods, it is characterized in that coating is in using respectively preparation in front 12 hours, according to prescription solid-state composition material is poured in the container that liquid composition material is housed, stir more than 30 minutes, then add Ludox and AEO (JFC) and stirred 10 minutes again, sealing is deposited stand-by.
4. an adiabatic complex layer coating that is used for permanent mold casting production common medium-carbon steel foundry goods is characterized in that coating will fully stir before use, adopts craft or compressed air type blackwash sprayer to apply; At first apply subbing, the metal mold temperature is controlled at 180 ℃~200 ℃ during coating, and coating layer thickness is controlled at 1.0mm~2.0mm; Then apply surface coating material, coating layer thickness is controlled at 0.5mm~1.0mm; Adopt the ignition way dry solidification; Metal mold behind the coating coating re-uses after 1~1.5 hour 120 ℃~140 ℃ insulations.
5. according to the subbing of adiabatic complex layer coating claimed in claim 1, it is characterized in that described Jilin diatomite need to carry out calcination process, roasting technique is: at first, be heated to 200 ℃ by room temperature, be 2 hours heat time heating time, is incubated 1 hour; Then, be heated to 400 ℃ by 200 ℃, be 1 hour heat time heating time, is incubated 1 hour; At last, be heated to 800 ℃ by 400 ℃, be 2 hours heat time heating time, is incubated 1 hour.
6. according to the subbing of adiabatic complex layer coating claimed in claim 1, it is characterized in that described Jilin diatomite needs air-flow crushing after calcination process, the size distribution after the pulverizing is at 5 μ m~15 μ m.
7. according to the surface coating material of adiabatic complex layer coating claimed in claim 1, the grade that it is characterized in that described zirconium English powder is 1 grade.
8. according to the subbing of adiabatic complex layer coating claimed in claim 1, it is characterized in that each coating can pour into a mould 3~5 times, but must check before each cast, such as the in time coating of discovery local shedding.
9. according to adiabatic complex layer coating claimed in claim 1, it is characterized in that described subbing and surface coating material performance should meet the requirement of table 1:
The properties of table 1 coating
CN2012105828014A 2012-12-28 2012-12-28 Novel heat insulation multilayer coating for common medium carbon steel casting in metal casting production Pending CN103008534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012105828014A CN103008534A (en) 2012-12-28 2012-12-28 Novel heat insulation multilayer coating for common medium carbon steel casting in metal casting production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012105828014A CN103008534A (en) 2012-12-28 2012-12-28 Novel heat insulation multilayer coating for common medium carbon steel casting in metal casting production

Publications (1)

Publication Number Publication Date
CN103008534A true CN103008534A (en) 2013-04-03

Family

ID=47957948

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012105828014A Pending CN103008534A (en) 2012-12-28 2012-12-28 Novel heat insulation multilayer coating for common medium carbon steel casting in metal casting production

Country Status (1)

Country Link
CN (1) CN103008534A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104190862A (en) * 2014-09-24 2014-12-10 无锡康柏斯机械科技有限公司 Heat insulation anti-sticking coating for mechanical cast steel machining and preparation method of heat insulation anti-sticking coating
CN105884382A (en) * 2016-04-06 2016-08-24 郑州远东耐火材料有限公司 Coating for non-shrinkage-cavity fusion cast brick heating insulated feeder head
CN106045431A (en) * 2016-06-08 2016-10-26 河南交院工程技术有限公司 Fireproof coating for interior wall of highway tunnel and preparation method of fireproof coating
CN107584082A (en) * 2017-08-26 2018-01-16 上海魁殊自动化科技有限公司 A kind of method that coating is coated to casting mold

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922286B1 (en) * 1970-12-30 1974-06-07
JPS5561347A (en) * 1978-10-31 1980-05-09 Matsushita Electric Ind Co Ltd Coat forming method in casting die
JPS59169642A (en) * 1983-03-15 1984-09-25 Kubota Ltd Mold coating material for metallic mold
JPS61186144A (en) * 1985-02-13 1986-08-19 Daido Steel Co Ltd Improvement of quality of cast steel product
CN102284676A (en) * 2011-09-19 2011-12-21 张蓓丹 Coating for metal mold casting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4922286B1 (en) * 1970-12-30 1974-06-07
JPS5561347A (en) * 1978-10-31 1980-05-09 Matsushita Electric Ind Co Ltd Coat forming method in casting die
JPS59169642A (en) * 1983-03-15 1984-09-25 Kubota Ltd Mold coating material for metallic mold
JPS61186144A (en) * 1985-02-13 1986-08-19 Daido Steel Co Ltd Improvement of quality of cast steel product
CN102284676A (en) * 2011-09-19 2011-12-21 张蓓丹 Coating for metal mold casting

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
刘志明等: "硅藻土及其在铸造绝热涂料中应用的研究", 《铸造》, no. 2, 28 February 1999 (1999-02-28) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104190862A (en) * 2014-09-24 2014-12-10 无锡康柏斯机械科技有限公司 Heat insulation anti-sticking coating for mechanical cast steel machining and preparation method of heat insulation anti-sticking coating
CN105884382A (en) * 2016-04-06 2016-08-24 郑州远东耐火材料有限公司 Coating for non-shrinkage-cavity fusion cast brick heating insulated feeder head
CN105884382B (en) * 2016-04-06 2018-08-14 郑州远东耐火材料有限公司 Coating for no shrinkage cavity fused cast refractories heat preservation riser
CN106045431A (en) * 2016-06-08 2016-10-26 河南交院工程技术有限公司 Fireproof coating for interior wall of highway tunnel and preparation method of fireproof coating
CN107584082A (en) * 2017-08-26 2018-01-16 上海魁殊自动化科技有限公司 A kind of method that coating is coated to casting mold

Similar Documents

Publication Publication Date Title
CN103920852B (en) A kind of precision casting process of large foundry goods
CN102407275B (en) Expendable pattern casting (EPC) molding shell paint for casting steel and preparation method thereof
CN101767184B (en) Lost foam casting cast iron coating for preventing carbon defects and preparation method thereof
CN102248120B (en) Low thermoconductive paint for casting lost foam of thin wall cast
CN104325081B (en) The preparation method of the combined type shell of insulation material is implanted in a kind of inside
CN102836950B (en) Lost foam coating and preparation method thereof
CN108057840B (en) A kind of formula of the water base lost foam paint of low-temperature high-strength magnesium iron
CN103008534A (en) Novel heat insulation multilayer coating for common medium carbon steel casting in metal casting production
CN102836952A (en) Resin sand type casting coating and preparation method thereof
CN102847871A (en) Lost foam paint and preparation method thereof
CN103302238B (en) Preparation method of low-cost high-performance lost foam casting coating
CN102145372A (en) Coating for metal mold casting of aluminum alloy thin-walled piece and preparation method and coating method thereof
CN105268911A (en) High-breathability lost foam coating and preparing method thereof
CN102921885A (en) Sand casting technology for titanium, zirconium and nickel and alloy casting thereof
CN103273007A (en) Casting technique of V12-type engine cylinder block
CN102836953A (en) Cast iron lost foam coating and preparation method thereof
CN102873262B (en) Lost foam coating and preparation method thereof
CN102430704B (en) Preparation method for lost foam casting paint
CN102416440B (en) Casting method for liquid metal pouring of lost mold casting model in high-frequency micro-vibration field under negative pressure of dry sand
CN102335725A (en) Lost foam casting method for high-power motor cast iron base
CN105537526A (en) Forming method of flame-retarding insulating riser
CN104226907A (en) Lost foam casting process capable of compacting sand further
CN102836957A (en) Lost foam coating and preparation method thereof
CN102773404B (en) Anti-whiting coating for cast iron and methods for preparing and using anti-whiting coating for cast iron
CN103084540B (en) A kind of lost foam paint compound method for casting heat-resistant steel or wear-resisting alloy steel

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20130403