CN104152794A - Cylinder sleeve casting technology - Google Patents
Cylinder sleeve casting technology Download PDFInfo
- Publication number
- CN104152794A CN104152794A CN201410433522.0A CN201410433522A CN104152794A CN 104152794 A CN104152794 A CN 104152794A CN 201410433522 A CN201410433522 A CN 201410433522A CN 104152794 A CN104152794 A CN 104152794A
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- cylinder sleeve
- casting technology
- cylinder
- particle
- casting
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a cylinder sleeve casting technology. Ti and Sb are processed into compound particles; materials are blended proportionally and smelted into an alloy; inoculation is performed twice, that is, an inoculant is inoculated first in a bale and then in a casting ladle; casting and quenching treatments are performed. According to the cylinder sleeve casting technology, Ti and Sb compound particles are dispersed uniformly, a cylinder sleeve has a compact texture and is good in thermal stability, the process is simple, the cost is low, industrialized production is easy to implement, and the wear resistance is enhanced. Inoculation is performed twice to refine the metallographic texture further and enhance the mechanical property.
Description
Technical field
The present invention relates to a kind of cylinder liner casting technology.
Background technology
Due to the deterioration increasingly of environment, China most areas is northern especially, central and west regions, and sand and dust are larger, and hard particulate very easily sucks engine cylinder, produces abrasive wear, has a strong impact on the work-ing life of engine.
Cylinder is engine core part, is the space of gas compression, burning expansion, is the track of piston motion guiding.The highest transient temperature in combustion processes is up to 2200～2400 DEG C, the highest transient pressure is up to 12～14MPa, the inwall of cylinder sleeve is directly subject to high temperature, high pressure, fusible effect, if cylinder sucks particulate sand and dust again, make cylinder inner wall increase again abrasive wear under the extreme working conditions worsening, further shortened the work-ing life of engine.
Cylinder sleeve is one of important friction pair of engine, and its wear resistance directly has influence on the consumption of life-span, power, fuel oil and the machine oil of engine.Along with improving constantly of engine movement velocity, mechanical property stress and thermal stresses that its cylinder sleeve, piston, piston ring bear are more and more high, the wearing and tearing of the cylinder of diesel engine internal friction pair causing therefrom, and particularly sand and dust abrasive wear is even more serious.
The material cylinder sleeve such as the traditional high-phosphorous iron of China, boron cast iron, low-alloy cast iron, vanadium-titanium cast iron have not adapted to the demand of current high-grade engine with supercharger.Its main wear form has: abrasive wear, scuff wear, corrosive wear etc.Along with the improving constantly of diesel engine strengthening, its movement velocity and explosion pressure are all greatly improved, so the wear problem of cylinder sleeve is also day by day serious in recent years.Therefore, development anti-abrasion type cylinder sleeve is very important.
Summary of the invention
Object of the present invention, in order to solve above-mentioned problems of the prior art, provides a kind of cylinder liner casting technology exactly.
In order to achieve the above object, the present invention by the following technical solutions: a kind of cylinder liner casting technology, first Ti and Sb being processed into synthetic particle is that 2-3mm is for subsequent use; Then prepare burden in proportion melting, wherein C3.8% of alloy; Si 2.0%; Mn 1.5%; P 0.4%; S 0.09%; Cu 2.2%; Cr 0.45%; Fe 89.56%, adds synthetic particle in proportion when smelting temperature reaches 1550 DEG C, wherein Ti 0.45%, Sb 0.4%, and particle adds after purification 6 minutes, then carries out breeding for twice, first nucleating agent is bred in large bag, then breeds in pouring ladle; Teeming temperature is 1380 DEG C～1320 DEG C; Pouring speed is 2kg/s; Cooling intensity is water-cooled 180 seconds; After blank depanning, put into solution when 650 DEG C of left and right and quench, make the metallographic structure of cylinder sleeve change lower bainite into.
Beneficial effect of the present invention: 1. add Ti and Sb to synthesize particle in Cast Iron Melts, particle dispersion is even, the dense structure of cylinder sleeve, Heat stability is good, has good oil storage capacity and excellent wear resisting property and resistance to corrosion; 2. the method flow of the synthetic particle of Ti and Sb is simple, and cost is low, is easy to realize industrialization and produces; 3. Ti and Sb are strong graphite elements, have the pearlitic effect of refinement graphite, form the stable especially high-intensity compound containing Ti and Sb, and disperse is dispersed in the matrix of Cast iron liner, strengthens wear resistance.4. breed further refinement metallographic structure by twice, strengthen mechanical property; 5. utilize the immediate quenching of depanning blank, make it change lower bainite tissue into, make engine more enter one and improve its wear resistance, adapt to the more severe environment work of Midwest sand and dust.
Embodiment
Embodiment: a kind of cylinder liner casting technology, first Ti and Sb being processed into synthetic particle is that 2-3mm is for subsequent use; Then prepare burden in proportion melting, wherein C3.8% of alloy; Si 2.0%; Mn 1.5%; P 0.4%; S 0.09%; Cu 2.2%; Cr 0.45%; Fe 89.56%, adds synthetic particle in proportion when smelting temperature reaches 1550 DEG C, wherein Ti 0.45%, Sb 0.4%, and particle adds after purification 6 minutes, then carries out breeding for twice, first nucleating agent is bred in large bag, then breeds in pouring ladle; Teeming temperature is 1380 DEG C～1320 DEG C; Pouring speed is 2kg/s; Cooling intensity is water-cooled 180 seconds; After blank depanning, put into solution when 650 DEG C of left and right and quench, make the metallographic structure of cylinder sleeve change lower bainite into.
Finally it should be noted that: the foregoing is only explanation embodiments of the present invention; be not limited to the present invention; for a person skilled in the art; within the spirit and principles in the present invention all; any amendment of doing, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.
Claims (1)
1. a cylinder liner casting technology, is characterized in that: first Ti and Sb being processed into synthetic particle is that 2-3mm is for subsequent use; Then prepare burden in proportion melting, wherein C3.8% of alloy; Si 2.0%; Mn 1.5%; P 0.4%; S 0.09%; Cu 2.2%; Cr 0.45%; Fe 89.56%, adds synthetic particle in proportion when smelting temperature reaches 1550 DEG C, wherein Ti 0.45%, Sb 0.4%, and particle adds after purification 6 minutes, then carries out breeding for twice, first nucleating agent is bred in large bag, then breeds in pouring ladle; Teeming temperature is 1380 DEG C～1320 DEG C; Pouring speed is 2kg/s; Cooling intensity is water-cooled 180 seconds; After blank depanning, put into solution when 650 DEG C of left and right and quench, make the metallographic structure of cylinder sleeve change lower bainite into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410433522.0A CN104152794A (en) | 2014-08-29 | 2014-08-29 | Cylinder sleeve casting technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410433522.0A CN104152794A (en) | 2014-08-29 | 2014-08-29 | Cylinder sleeve casting technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104152794A true CN104152794A (en) | 2014-11-19 |
Family
ID=51878415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410433522.0A Pending CN104152794A (en) | 2014-08-29 | 2014-08-29 | Cylinder sleeve casting technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104152794A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041012A (en) * | 2016-06-30 | 2016-10-26 | 中原内配集团安徽有限责任公司 | Production method of wear-resistant cylinder sleeve |
| CN108796369A (en) * | 2018-06-13 | 2018-11-13 | 中原内配集团安徽有限责任公司 | A kind of casting processing technology of automobile cylinder liner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567398A (en) * | 2012-07-24 | 2014-02-12 | 韦波 | High-abrasion-resistance anti-dust cylinder liner casting technology |
-
2014
- 2014-08-29 CN CN201410433522.0A patent/CN104152794A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567398A (en) * | 2012-07-24 | 2014-02-12 | 韦波 | High-abrasion-resistance anti-dust cylinder liner casting technology |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106041012A (en) * | 2016-06-30 | 2016-10-26 | 中原内配集团安徽有限责任公司 | Production method of wear-resistant cylinder sleeve |
| CN108796369A (en) * | 2018-06-13 | 2018-11-13 | 中原内配集团安徽有限责任公司 | A kind of casting processing technology of automobile cylinder liner |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141119 |