CN104565010A - Manufacturing technology of connecting rod of internal combustion engine of automobile - Google Patents
Manufacturing technology of connecting rod of internal combustion engine of automobile Download PDFInfo
- Publication number
- CN104565010A CN104565010A CN201310525861.7A CN201310525861A CN104565010A CN 104565010 A CN104565010 A CN 104565010A CN 201310525861 A CN201310525861 A CN 201310525861A CN 104565010 A CN104565010 A CN 104565010A
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- CN
- China
- Prior art keywords
- connecting rod
- combustion engine
- die forging
- automobile
- internal combustion
- 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.)
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Abstract
The invention provides a manufacturing technology of a connecting rod of an internal combustion engine of an automobile. The connecting rod is made from 45Cr, and is treated by the following steps sequentially: feeding materials, hot die forging, water cooling, normalization, cleaning, quenching and tempering, shot peening intensification and mechanical processing, wherein the temperature for hot die forging is 1160 DEG C; according to the manufacturing technology of the connecting rod of the internal combustion engine of the automobile, the temperature for normalization treatment is 900 DEG C; the quenching and tempering treatment comprises the following steps of firstly heating a workpiece to 860 DEG C, preserving the temperature for 1 hour, and then carrying out oil quenching; and then tempering and carrying out water cooling at 600 DEG C. After the connecting rod is subjected to the hot die forging, water cooling, normalization, quenching and tempering treatment sequentially, the hardness is improved, and reaches 265HB. By testing, the anti-fatigue intensity and the structure intensity of the connecting rod are also improved greatly.
Description
Technical field
The present invention relates to the manufacturing process of car combustion engine connecting rod.
Background technology
Oil engine is by after liquid or geseous fuel and air mixed, and the high pressure combustion chamber burning outburst directly inputting cylinder internal produces power.This is also be a kind of heat engine of mechanical energy by thermal energy.Oil engine has the advantages that volume is little, quality is little, be convenient to mobile, thermo-efficiency is high, starting performance is good.
The straight reciprocating motion of piston is changed into the rotary motion of bent axle by the connecting rod of oil engine, the repeated load of bearing compression and stretching.Connecting rod is consumable accessory, easily occurs fracture.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of manufacturing process of car combustion engine connecting rod.
In order to solve the problems of the technologies described above, technical scheme of the present invention is:
A manufacturing process for car combustion engine connecting rod, the material of connecting rod is 45Cr, sequentially through steps of processing: blanking-hot closed-die forging-water-cooled-normalizing treatment-cleaning-modifier treatment-throwing pill strengthening-mechanical workout.
The manufacturing process of car combustion engine connecting rod, hot closed-die forging temperature is 1160 DEG C.
The manufacturing process of car combustion engine connecting rod, normalizing treatment temperature is 900 DEG C.
The manufacturing process of car combustion engine connecting rod, modifier treatment be first by workpiece heat to 860 DEG C, insulation 1h, then oil quenching process; Then 600 DEG C of tempering water-cooled.
After connecting rod sequentially passes through hot closed-die forging ,-water-cooled, normalizing treatment and modifier treatment, improve hardness, hardness reaches 265HB.Through test, the fatigue resistance of connecting rod and structural strength have also been obtained and significantly improve.
Embodiment
A manufacturing process for car combustion engine connecting rod, the material of connecting rod is 45Cr, sequentially through steps of processing: blanking-hot closed-die forging-water-cooled-normalizing treatment-cleaning-modifier treatment-throwing pill strengthening-mechanical workout.Hot closed-die forging temperature is 1160 DEG C, and normalizing treatment temperature is 900 DEG C, modifier treatment be first by workpiece heat to 860 DEG C, insulation 1h, then oil quenching process; Then 600 DEG C of tempering water-cooled.
Claims (4)
1. a manufacturing process for car combustion engine connecting rod, the material of connecting rod is 45Cr, it is characterized in that: sequentially through steps of processing: blanking-hot closed-die forging-water-cooled-normalizing treatment-cleaning-modifier treatment-throwing pill strengthening-mechanical workout.
2. the manufacturing process of car combustion engine connecting rod according to claim 1, is characterized in that: hot closed-die forging temperature is 1160 DEG C.
3. the manufacturing process of car combustion engine connecting rod according to claim 1, is characterized in that: normalizing treatment temperature is 900 DEG C.
4. the manufacturing process of car combustion engine connecting rod according to claim 1, is characterized in that: modifier treatment for first by workpiece heat to 860 DEG C, insulation 1h, then oil quenching process; Then 600 DEG C of tempering water-cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310525861.7A CN104565010A (en) | 2013-10-15 | 2013-10-15 | Manufacturing technology of connecting rod of internal combustion engine of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310525861.7A CN104565010A (en) | 2013-10-15 | 2013-10-15 | Manufacturing technology of connecting rod of internal combustion engine of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104565010A true CN104565010A (en) | 2015-04-29 |
Family
ID=53081838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310525861.7A Pending CN104565010A (en) | 2013-10-15 | 2013-10-15 | Manufacturing technology of connecting rod of internal combustion engine of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104565010A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130094A (en) * | 2017-06-23 | 2017-09-05 | 江苏丰东热处理及表面改性工程技术研究有限公司 | A kind of automobile connecting bar throwing pill strengthening technique |
| CN107150212A (en) * | 2017-07-12 | 2017-09-12 | 安徽凯密克企业管理咨询有限公司 | A kind of forging technology of auto parts connecting rod blank |
| CN112048609A (en) * | 2020-09-08 | 2020-12-08 | 山东大众机械制造股份有限公司 | Heat treatment process for connecting rod |
-
2013
- 2013-10-15 CN CN201310525861.7A patent/CN104565010A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130094A (en) * | 2017-06-23 | 2017-09-05 | 江苏丰东热处理及表面改性工程技术研究有限公司 | A kind of automobile connecting bar throwing pill strengthening technique |
| CN107150212A (en) * | 2017-07-12 | 2017-09-12 | 安徽凯密克企业管理咨询有限公司 | A kind of forging technology of auto parts connecting rod blank |
| CN112048609A (en) * | 2020-09-08 | 2020-12-08 | 山东大众机械制造股份有限公司 | Heat treatment process for connecting rod |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |