CN105834399B - A kind of composite low-pressure casting stalk and preparation method thereof - Google Patents
A kind of composite low-pressure casting stalk and preparation method thereof Download PDFInfo
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- CN105834399B CN105834399B CN201610219713.6A CN201610219713A CN105834399B CN 105834399 B CN105834399 B CN 105834399B CN 201610219713 A CN201610219713 A CN 201610219713A CN 105834399 B CN105834399 B CN 105834399B
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- stalk
- matrix
- transition zone
- ceramic coating
- preparation
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- 238000005266 casting Methods 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000002131 composite material Substances 0.000 title claims abstract description 15
- 239000011159 matrix material Substances 0.000 claims abstract description 48
- 230000007704 transition Effects 0.000 claims abstract description 30
- 239000007921 spray Substances 0.000 claims abstract description 29
- 238000005524 ceramic coating Methods 0.000 claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims abstract description 10
- 238000005516 engineering process Methods 0.000 claims abstract description 8
- 238000012545 processing Methods 0.000 claims abstract description 8
- 238000007788 roughening Methods 0.000 claims abstract description 6
- 238000005488 sandblasting Methods 0.000 claims abstract description 6
- 238000005507 spraying Methods 0.000 claims description 10
- 230000003746 surface roughness Effects 0.000 claims description 10
- 239000004576 sand Substances 0.000 claims description 5
- 239000000758 substrate Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 9
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000012805 post-processing Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910003310 Ni-Al Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000007770 graphite material Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
- B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
The present invention relates to a kind of composite low-pressure casting stalk and preparation method thereof, including coat the matrix, transition zone and ceramic coating of setting successively from inside to outside；Stalk matrix is prepared first with foundry engieering during preparation, and does the processing such as deburring, overlap, and sandblasting roughening treatment is done to stalk matrix；Then transition zone and ceramic coating are sprayed in matrix surfaces externally and internally using plasma spray technology；The post processing such as polish finally is carried out to the stalk after preparation.The advantage of the invention is that：The present invention solves existing low-pressure casting lift tube short life and has the problems such as pollution reduces cast properties to casting material, the stalk has wear-resisting, the corrosion resistance of certain metal toughness and ceramics, the fragility for solving ceramic lift tube is big, the shortcomings that easy to crack, frangible, and the stalk solves the problems, such as that overall cast iron stalk is vulnerable to metal corrosion and easily pollution molten metal by the iris action of ceramic coating.
Description
Technical field
The present invention relates to mechanical manufacturing field, more particularly to a kind of composite low-pressure casting stalk and preparation method thereof.
Background technology
Low pressure casting is by metal melting liquid, into die cavity and is solidified, the method for preparing part by pressure effect.
And stalk is the important component of apparatus for pouring in low pressure casting, in low pressure casting process, by pressure by the gold of melting
Belong to deliver into die cavity of the liquid by stalk, therefore stalk not only needs to convey high-temperature liquid metal, and lower end when working
Be placed in air injection machine it is closed contain aluminum melt holding furnace in (700 DEG C~900 DEG C of temperature), cause stalk can produce abrasion and
The damage of corrosion.Currently used stalk mainly has overall cast iron quality, graphite material and ceramic material, wherein cast iron quality
Stalk under the operating mode of low pressure casting, easily produce corrosive wear situation, and cast iron conveying metallic solution be meeting
The infiltration of ferro element is produced, makes occur iron tramp in molten metal, has a strong impact on the quality and combination property of mo(u)lded piece；And graphite
The stalk mechanical property of material is poor, easily occurs situation about being broken in use, causes its damage failure；Pottery in addition
Porcelain material stalk enbrittles the characteristics of larger, therefore easily produces fragmentation in use, influences production efficiency.Therefore
It is badly in need of developing that a kind of mechanical property is good, is hardly damaged and composite low-pressure casting stalk that production efficiency is high and preparation method thereof,
Through retrieval, do not find and the same or analogous technical scheme of the present invention.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of mechanical property it is good, be hardly damaged and that production efficiency is high is compound
Low-pressure casting lift tube and preparation method thereof.
In order to solve the above technical problems, the technical scheme is that：A kind of composite low-pressure casts stalk, its innovative point
It is：Matrix, transition zone and ceramic coating including coating setting successively from inside to outside；Described matrix is in middle through post shape, upper end
Outside has the horizontal stand terrace set in integrative-structure；The transition zone is coated on matrix inside and outside wall and bottom, at inwall
Transition zone extends to horizontal stand terrace upper surface, and the transition zone at outer wall extends to the lower surface of horizontal stand terrace；The ceramics
Coating is coated on transition zone inside and outside wall and bottom, and the ceramic coating at inwall extends to horizontal stand terrace upper surface, at outer wall
Ceramic coating extends to the lower surface of horizontal stand terrace.
Further, described matrix material selection cast iron, the buffer layer material select Ni-Al alloy coating.
Further, described matrix thickness is 3~12mm, and transition region thickness is 0.05~0.35mm, thickness of ceramic coating
For 0.3~0.5mm.
The present invention discloses a kind of preparation side of composite low-pressure casting stalk based on a kind of composite low-pressure casting stalk
Method, the preparation method are specific as follows：
（1）Matrix is prepared using foundry engieering, and deburring, overlap processing are carried out to matrix surfaces externally and internally, processing is completed
Carry out sandblasting roughening treatment to matrix surface afterwards, the granularity of the sand be 0.5~1.4mm, Substrate Surface Roughness for 2.5~
13.0；
（2）To substrate preheating to 150~250 DEG C, matrix surfaces externally and internally is sprayed using plasma spray technology after the completion of preheating
Transition zone, and it is 65~80V to control the spray voltage of spray equipment, electric current is 500~700A, and air pressure is 0.25~0.4MPa,
Spray distance between matrix surface is 70~120mm；
（3）Continue using hot spray apparatus in transition zone surfaces externally and internally spraying ceramic coat, the liter obtained after the completion of spraying
The Rockwell hardness of liquid pipe is 45~55HRC；
（4）Stalk surfaces externally and internally is polished, its surface roughness is reached 1.4~1.8.
The advantage of the invention is that：
（1）The present invention solves existing low-pressure casting lift tube short life and has pollution to reduce cast properties etc. casting material
Problem, the stalk have wear-resisting, the corrosion resistance of certain metal toughness and ceramics, solve the fragility of ceramic lift tube
Greatly, the shortcomings that easy to crack, frangible, and the stalk solves overall cast iron stalk by the iris action of ceramic coating
The problem of being vulnerable to metal corrosion and easily pollution molten metal.Stalk of the present invention can effectively prevent aluminium liquid from oozing iron problem, carry
High casting combination property, and the stalk has the performance such as high abrasion, corrosion-resistant, service life length.
（2）Transition zone and ceramic coating are sprayed using plasma spray technology when prepared by stalk, can be effectively improved
The surface adhesion of layer and ceramic coating is crossed, and improves the fatigue behaviour of material.
Brief description of the drawings
Fig. 1 is the partial sectional view that a kind of composite low-pressure of the present invention casts stalk.
Embodiment
As shown in figure 1, the invention discloses a kind of composite low-pressure to cast stalk, including cladding is set successively from inside to outside
Matrix 1, transition zone 3 and ceramic coating 4；Wherein matrix 1 is made from cast iron, and in middle through post shape, it is in one to have on the outside of upper end
The horizontal stand terrace 2 of body structure setting；Transition zone 3 selects Ni-Al alloy coating, is coated on the inside and outside wall of matrix 1 and bottom, inwall
The transition zone 3 at place extends to the upper surface of horizontal stand terrace 2, and the transition zone 3 at outer wall extends to the lower surface of horizontal stand terrace 2；
Ceramic coating 4 is coated on the inside and outside wall of transition zone 3 and bottom, and the ceramic coating 4 at inwall extends to the upper surface of horizontal stand terrace 2,
Ceramic coating 4 at outer wall extends to the lower surface of horizontal stand terrace 2.
Embodiment 1
The invention also discloses a kind of preparation method of composite low-pressure casting stalk, the preparation method are specific as follows：
（1）The matrix that wall thickness is 3~12mm is prepared using foundry engieering, and deburring is carried out to the surfaces externally and internally of matrix 1, flown
Side is handled, and sandblasting roughening treatment is carried out to the surface of matrix 1 after the completion of processing, and the wherein granularity of sand is 0.5~1.4mm, the table of matrix 1
Surface roughness is 2.5~13.0；
（2）50~150 DEG C are preheated to matrix 1, the surfaces externally and internally of matrix 1 is sprayed using plasma spray technology after the completion of preheating
Transition zone 3, and it is 65~80V to control the spray voltage of spray equipment, electric current is 500~700A, and air pressure is 0.1~0.25MPa,
Spray distance between the surface of matrix 1 is 40~70mm；
（3）Continue to obtain after the completion of spraying in the surfaces externally and internally spraying ceramic coat 4 of transition zone 3 using hot spray apparatus
The Rockwell hardness of stalk is 45~55HRC；
（4）Stalk surfaces externally and internally is polished, its surface roughness is reached 1.4~1.8.
Each performance parameter that following table obtains for the stalk of unlike material under the preparation parameter of embodiment 1：
Embodiment 2
The invention also discloses a kind of preparation method of composite low-pressure casting stalk, the preparation method are specific as follows：
（1）The matrix that wall thickness is 3~12mm is prepared using foundry engieering, and deburring is carried out to the surfaces externally and internally of matrix 1, flown
Side is handled, and sandblasting roughening treatment is carried out to the surface of matrix 1 after the completion of processing, and the wherein granularity of sand is 0.5~1.4mm, the table of matrix 1
Surface roughness is 2.5~13.0；
（2）150~250 DEG C are preheated to matrix 1, the surfaces externally and internally of matrix 1 is sprayed using plasma spray technology after the completion of preheating
Apply transition zone 3, and it be 65~80V to control the spray voltage of spray equipment, electric current is 500~700A, air pressure for 0.25~
Spray distance between 0.4MPa, with the surface of matrix 1 is 70~120mm；
（3）Continue to obtain after the completion of spraying in the surfaces externally and internally spraying ceramic coat 4 of transition zone 3 using hot spray apparatus
The Rockwell hardness of stalk is 45~55HRC；
（4）Stalk surfaces externally and internally is polished, its surface roughness is reached 1.4~1.8.
Each performance parameter that following table obtains for the stalk of unlike material under the preparation parameter of embodiment 2：
Embodiment 3
The invention also discloses a kind of preparation method of composite low-pressure casting stalk, the preparation method are specific as follows：
（1）The matrix that wall thickness is 3~12mm is prepared using foundry engieering, and deburring is carried out to the surfaces externally and internally of matrix 1, flown
Side is handled, and sandblasting roughening treatment is carried out to the surface of matrix 1 after the completion of processing, and the wherein granularity of sand is 0.5~1.4mm, the table of matrix 1
Surface roughness is 2.5~13.0；
（2）250~350 DEG C are preheated to matrix 1, the surfaces externally and internally of matrix 1 is sprayed using plasma spray technology after the completion of preheating
Apply transition zone 3, and it be 65~80V to control the spray voltage of spray equipment, electric current is 500~700A, air pressure for 0.4~
Spray distance between 0.5MPa, with the surface of matrix 1 is 120~160mm；
（3）Continue to obtain after the completion of spraying in the surfaces externally and internally spraying ceramic coat 4 of transition zone 3 using hot spray apparatus
The Rockwell hardness of stalk is 45~55HRC；
（4）Stalk surfaces externally and internally is polished, its surface roughness is reached 1.4~1.8.
Each performance parameter that following table obtains for the stalk of unlike material under the preparation parameter of embodiment 3：
According to above-described embodiment, the stalk that is prepared in each embodiment by matrix 1, transition zone 3 and ceramic coating 4
Service life and fatigue resistance highest, the permeability of ferro element are minimum；Simultaneously by matrix 1, mistake in compared to three embodiments
Cross the performance parameter for the stalk that layer 3 and ceramic coating 4 are prepared, the performance in embodiment 2 is best, therefore chooses preheating temperature
Spend for 150~250 DEG C, the air pressure of spray equipment is 0.25~0.4MPa, and spray distance is 70~120mm.
The general principle and principal character of the present invention has been shown and described above.It should be understood by those skilled in the art that
The present invention is not limited to the above embodiments, merely illustrating the principles of the invention described in above-described embodiment and specification,
Without departing from the spirit and scope, various changes and modifications of the present invention are possible, and these changes and improvements all fall
Enter in scope of the claimed invention.The scope of the present invention is defined by the appended claims and its equivalents.
Claims (1)
1. a kind of preparation method of composite low-pressure casting stalk, composite low-pressure casting stalk include wrapping successively from inside to outside
Cover the matrix put, transition zone and ceramic coating；Described matrix is in middle through post shape, has what is set in integrative-structure on the outside of upper end
Horizontal stand terrace；The transition zone is coated on matrix inside and outside wall and bottom, and the transition zone at inwall is extended on horizontal stand terrace
End face, the transition zone at outer wall extend to the lower surface of horizontal stand terrace；The ceramic coating be coated on transition zone inside and outside wall and
Bottom, the ceramic coating at inwall extend to horizontal stand terrace upper surface, and the ceramic coating at outer wall extends to horizontal stand terrace
Lower surface；It is characterized in that：The preparation method is specific as follows：
Matrix is prepared using foundry engieering, and deburring, overlap processing are carried out to matrix surfaces externally and internally, to matrix after the completion of processing
Surface carries out sandblasting roughening treatment, and the granularity of the sand is 0.5~1.4mm, and Substrate Surface Roughness is 2.5~13.0；
To substrate preheating to 150~250 DEG C, transition zone is sprayed to matrix surfaces externally and internally using plasma spray technology after the completion of preheating,
And it is 65~80V to control the spray voltage of spray equipment, electric current is 500~700A, and air pressure is 0.25~0.4MPa, with matrix table
Spray distance between face is 70~120mm；
Continue using hot spray apparatus in transition zone surfaces externally and internally spraying ceramic coat, the Lip river of the stalk obtained after the completion of spraying
Family name's hardness is 45~55HRC；
Stalk surfaces externally and internally is polished, its surface roughness is reached 1.4~1.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610219713.6A CN105834399B (en) | 2016-04-11 | 2016-04-11 | A kind of composite low-pressure casting stalk and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610219713.6A CN105834399B (en) | 2016-04-11 | 2016-04-11 | A kind of composite low-pressure casting stalk and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105834399A CN105834399A (en) | 2016-08-10 |
| CN105834399B true CN105834399B (en) | 2017-12-15 |
Family
ID=56597159
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610219713.6A Active CN105834399B (en) | 2016-04-11 | 2016-04-11 | A kind of composite low-pressure casting stalk and preparation method thereof |
Country Status (1)
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825498B (en) * | 2017-01-08 | 2018-11-16 | 中车戚墅堰机车车辆工艺研究所有限公司 | Stalk and its manufacturing method |
| CN109940152B (en) * | 2017-12-21 | 2021-10-01 | 沈阳铸造研究所有限公司 | Liquid lifting pipe for high-temperature alloy antigravity casting and manufacturing method thereof |
| CN108251865A (en) * | 2018-01-15 | 2018-07-06 | 周志英 | A kind of molten aluminum stalk and preparation method thereof |
| JP7232007B2 (en) * | 2018-09-27 | 2023-03-02 | 東京窯業株式会社 | Member for molten metal and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039984A (en) * | 1988-08-03 | 1990-02-28 | 鞍山钢铁公司 | Totally casting compound lift-liquid pipe and manufacturing method thereof |
| DE102007042537A1 (en) * | 2007-09-07 | 2009-04-02 | Strikowestofen Gmbh | Dosing furnace and riser for the delivery of molten metal |
| CN102925945A (en) * | 2012-11-07 | 2013-02-13 | 西安西工大超晶科技发展有限责任公司 | Mother for preparing a lifting tube through counter-gravity casting |
| CN202934102U (en) * | 2012-11-07 | 2013-05-15 | 西安西工大超晶科技发展有限责任公司 | Counter-gravity casting lift tube |
| CN104959574A (en) * | 2015-07-08 | 2015-10-07 | 中钢集团洛阳耐火材料研究院有限公司 | Riser pipe for low-pressure steel casting and manufacturing method thereof |
-
2016
- 2016-04-11 CN CN201610219713.6A patent/CN105834399B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1039984A (en) * | 1988-08-03 | 1990-02-28 | 鞍山钢铁公司 | Totally casting compound lift-liquid pipe and manufacturing method thereof |
| DE102007042537A1 (en) * | 2007-09-07 | 2009-04-02 | Strikowestofen Gmbh | Dosing furnace and riser for the delivery of molten metal |
| CN102925945A (en) * | 2012-11-07 | 2013-02-13 | 西安西工大超晶科技发展有限责任公司 | Mother for preparing a lifting tube through counter-gravity casting |
| CN202934102U (en) * | 2012-11-07 | 2013-05-15 | 西安西工大超晶科技发展有限责任公司 | Counter-gravity casting lift tube |
| CN104959574A (en) * | 2015-07-08 | 2015-10-07 | 中钢集团洛阳耐火材料研究院有限公司 | Riser pipe for low-pressure steel casting and manufacturing method thereof |
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