CN103128665A - Surface hardening method of automobile part - Google Patents
Surface hardening method of automobile part Download PDFInfo
- Publication number
- CN103128665A CN103128665A CN 201110397288 CN201110397288A CN103128665A CN 103128665 A CN103128665 A CN 103128665A CN 201110397288 CN201110397288 CN 201110397288 CN 201110397288 A CN201110397288 A CN 201110397288A CN 103128665 A CN103128665 A CN 103128665A
- Authority
- CN
- China
- Prior art keywords
- shot
- blasting
- cylinder sleeve
- upper belt
- treated
- 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
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides a surface hardening method of an automobile part. After mechanical machining of a cylinder sleeve, a space in one quarter of the width of an upper belt is arranged on the upper belt close to a shoulder part, and other parts are protected by semi-circle rings manufactured through two steel plates. By means of a movable hand-held shot-blasting machine, a grinding undercut, a lower table face and a part of the upper belt part which need to be hardened can be treated conveniently. Requirements of shot-blasting quality parameters for fatigue-resistant hardening of the lower end face of the supporting shoulder of the cylinder sleeve are as follows: a cast steel ball with the diameter of 1.5mm is adopted for shot blasting, and strength of the shot blasting is 0.008-0.01inch of an A test piece which is most commonly used. Therefore, after the to-be-treated surface of the cylinder sleeve is treated through the shot blasting, fatigue-resistant strength is improved through increasing of surface stress.
Description
Affiliated technical field
The present invention relates to particularly automobile engine cylinder cover strengthening treatment process of middle auto parts machinery.
Background technology
Automobile engine is because its live load is larger, and because of many combusting heavy oils, its working environment is also more abominable again, and particularly its cylinder jacket is frequently impacted, and causes shoulder fracture event more because of fatigue failure.
Summary of the invention
The invention provides a kind of cylinder jacket reinforcement process, process by shot blasting on surface is carried out at assembling grinding undercut position under shoulder, improve the anti-fatigue ability of cylinder jacket, reduce the generation of cylinder jacket shoulder fracture failure event.
It is after the cylinder jacket machining is completed that the present invention solves the method that its technical problem adopts, and to Metal Ball, bead being carried out at the grinding undercut position of its shoulder lower surface, has increased surface stress, reduces the structural stress at grinding undercut position under shoulder.
The invention has the beneficial effects as follows, anti-fatigue ability improves, and reduces disconnected platform event and occurs.
Description of drawings
This specification is without accompanying drawing.
Specific implementation method
It is as follows that the present invention solves ball blasting method flow process and method that its technical problem adopts:
The flow process of the shot peening of cylinder jacket is, liner blank goes thermal stress and the rough machined machining stress of casting through tempering after roughing, then endoporus and cylindrical position semifinishing, outer circle finish turning is worked into finished size again, then thick, the microhoning of endoporus is worked into finished size, follow again bead, rear purged and packed.
Concrete blasting technology parameter is as follows: the semicircular ring of after cylinder jacket machining finishes, upper waistband being made with two block plates near the shoulder position is protected; with removable hand-held compressed air shotblasting machine; can conveniently upward process at the waistband position its grinding undercut that need to strengthen, following table and part, the speed of its shot-peening, flow and shot-peening time formulate according to the shot-peening area of shot blasting equipment and cylinder jacket workpiece.The shot-peening mass parameter of strengthening for the antifatigue of ship machine cylinder jacket support shoulders lower surface requires as follows; it is 1.5mm cast steel ball that shot-peening adopts diameter; shot peening strength is the most frequently used A test piece 0.008-0.01 inch; the pending surface of cylinder jacket is through after bead like this; the protection of dismounting semicircular ring; bearing stress improves fatigue resistance.
Claims (2)
- The auto parts machinery surface reinforcing method is characterized in that:1. strengthening the position is waistband position on grinding undercut, following table and part.
- 2. blasting technology parameter diameter is 1.5mm cast steel ball, and intensity is the most frequently used A test piece 0.008-0.01 inch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110397288 CN103128665A (en) | 2011-11-30 | 2011-11-30 | Surface hardening method of automobile part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110397288 CN103128665A (en) | 2011-11-30 | 2011-11-30 | Surface hardening method of automobile part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103128665A true CN103128665A (en) | 2013-06-05 |
Family
ID=48489449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110397288 Pending CN103128665A (en) | 2011-11-30 | 2011-11-30 | Surface hardening method of automobile part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103128665A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104561480A (en) * | 2015-01-21 | 2015-04-29 | 柳州聚龙科技有限公司 | Surface treatment method for automobile engine cylinder jacket |
| CN107460433A (en) * | 2017-08-23 | 2017-12-12 | 柳州市二和汽车零部件有限公司 | Auto parts machinery surface reinforcing method |
-
2011
- 2011-11-30 CN CN 201110397288 patent/CN103128665A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104561480A (en) * | 2015-01-21 | 2015-04-29 | 柳州聚龙科技有限公司 | Surface treatment method for automobile engine cylinder jacket |
| CN107460433A (en) * | 2017-08-23 | 2017-12-12 | 柳州市二和汽车零部件有限公司 | Auto parts machinery surface reinforcing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130605 |