CN104632456A - Automotive engine piston made of novel material - Google Patents
Automotive engine piston made of novel material Download PDFInfo
- Publication number
- CN104632456A CN104632456A CN201310562961.7A CN201310562961A CN104632456A CN 104632456 A CN104632456 A CN 104632456A CN 201310562961 A CN201310562961 A CN 201310562961A CN 104632456 A CN104632456 A CN 104632456A
- Authority
- CN
- China
- Prior art keywords
- improved
- automotive engine
- novel
- alloy
- solid solubility
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0084—Pistons the pistons being constructed from specific materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F2003/0007—Monolithic pistons; One piece constructions; Casting of pistons
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention discloses an automotive engine piston made of a novel material and belongs to the field of automotive engine components. The novel material is rapid set high-silicon aluminum alloy, a certain novel tissue structure characteristic, namely ultra-fine microstructure is obtained through the rapid set technique, the solid solubility limit of the alloy is improved, the heights of components are even, segregation is nearly or completely avoided, a novel metastable phase is formed, and defect density is improved. The material has the advantages of being light, high in strength, high in corrosion resistance and heat resistance, low in thermal expansivity and the like, the solid solubility of Si in an aluminum matrix can be improved, grains are refined, the material is well matched with the matrix, and the performance of the alloy is improved remarkably.
Description
Technical field
The invention discloses a kind of piston of automobile engine of new material, belong to motor car engine assembly field.
Background technique
Automobile is one of topmost traffic tool of society, one of pillar industry of Ye Shi China.Therefore, the important topic that high-performing car material becomes China's development automotive industry is researched and developed.Particularly key components and parts material, as engine piston, the past usually cylinder iron, the ferro-alloy manufacture such as sintered steel, automotive dead weight is increased, and oil consumption is large, and running resistance is large, engine efficiency is low, also brings the environmental problems such as pollution, noise, affects the development of automobile.Therefore, in order to overcome the above problems, the invention discloses a kind of piston of automobile engine of new material, there is lightweight, high-strength, the characteristics such as high abrasion heat resistance and low thermal expansivity, the solid solubility of Si in aluminum substrate can be improved, crystal grain thinning, keeps good matching relationship with matrix, significantly improves the performance of alloy.
Summary of the invention
Object of the present invention is exactly the defect existed for prior art, provides a kind of piston of automobile engine of new material.
Its technological scheme is: this kind of new material is rapid solidification silumin, mainly adopts the technology of rapid solidification to cause new feature in some Organizational Structures, the i.e. microstructure of fine; Put forward heavy alloyed solid solubility limit; The high uniformity of composition, few segregation or segregation-free; Form new metastable phase; Increase density of imperfection etc.
Feature of the present invention: have lightweight, high-strength, the characteristics such as high abrasion heat resistance and low thermal expansivity, can improve the solid solubility of Si in aluminum substrate, crystal grain thinning, keep good matching relationship with matrix, significantly improve the performance of alloy.
Embodiment
This kind of new material is rapid solidification silumin, mainly adopts the technology of rapid solidification to cause new feature in some Organizational Structures, the i.e. microstructure of fine; Put forward heavy alloyed solid solubility limit; The high uniformity of composition, few segregation or segregation-free; Form new metastable phase; Increase density of imperfection etc.
Embodiment: silumin, Si content is greater than 40%, makes its cooling rate be issued to 10 at rapid solidification condition
4~ 10
9dEG C/s.
In addition, the invention does not mean that specification limited to, and can change to some extent under the prerequisite not departing from design aim.
Claims (2)
1. a piston of automobile engine for new material, is characterized in that: this kind of new material is rapid solidification silumin.
2. the piston of automobile engine of a kind of new material according to claim 1, is characterized in that: cooling rate is issued to 10 at rapid solidification condition
4~ 10
9dEG C/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310562961.7A CN104632456A (en) | 2013-11-14 | 2013-11-14 | Automotive engine piston made of novel material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310562961.7A CN104632456A (en) | 2013-11-14 | 2013-11-14 | Automotive engine piston made of novel material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104632456A true CN104632456A (en) | 2015-05-20 |
Family
ID=53211593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310562961.7A Pending CN104632456A (en) | 2013-11-14 | 2013-11-14 | Automotive engine piston made of novel material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104632456A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831132A (en) * | 2015-05-26 | 2015-08-12 | 云南永昌硅业股份有限公司 | High-silicon aluminum alloy and preparation method thereof |
-
2013
- 2013-11-14 CN CN201310562961.7A patent/CN104632456A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104831132A (en) * | 2015-05-26 | 2015-08-12 | 云南永昌硅业股份有限公司 | High-silicon aluminum alloy and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |