CN102416601A - Surface strengthening method - Google Patents
Surface strengthening method Download PDFInfo
- Publication number
- CN102416601A CN102416601A CN2010102946151A CN201010294615A CN102416601A CN 102416601 A CN102416601 A CN 102416601A CN 2010102946151 A CN2010102946151 A CN 2010102946151A CN 201010294615 A CN201010294615 A CN 201010294615A CN 102416601 A CN102416601 A CN 102416601A
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- CN
- China
- Prior art keywords
- shot
- shot blasting
- antifatigue
- strengthening
- upper belt
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- 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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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
A surface strengthening method. After completion of machining of a cylinder jacket, an upper belt is protected by a semicircular ring made of two steel plates. A movable hand-held shot blasting machine can conveniently carry out treatment on a grinding undercut, a lower table-board and part of the upper belt that need to be strengthened. Requirements on shot blasting quality parameters of antifatigue strengthening on a lower surface of a support shoulder of a marine machine cylinder liner are as below: shot blast employs cast steel ball with a diameter of 1mm, and shot blast intensity is most common test piece A 0.008-0.01 inch. After the shot blasting treatment, the cylinder liner surface gains increased surface crushing stress and enhanced antifatigue strength.
Description
Affiliated technical field
Large power diesel engine cylinder jacket strengthening treatment process in the present invention relates to.
Background technology
In high-power diesel engine because its live load is bigger, again because many combusting heavy oils, its working environment is also relatively more abominable, cylinder jacket is frequently impacted, and causes shoulder fracture incident more because of fatigue failure.
Summary of the invention
The present invention provides a kind of cylinder jacket reinforcement process, through shoulder is carried out the shot blasting on surface processing in assembling grinding undercut position down, improves the anti-fatigue ability of cylinder jacket, reduces the generation of cylinder jacket shoulder fracture failure incident.
It is after the cylinder jacket cut is accomplished 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 the shoulder.
The invention has the beneficial effects as follows that anti-fatigue ability improves, reduce disconnected platform incident and take place.
Description of drawings
This specification does not have accompanying drawing.
The practical implementation method
It is following that the present invention solves ball blasting method flow process and method that its technical problem adopts:
The flow process that the shot peening strengthening of cylinder jacket is handled is; Liner blank goes the thermal stress and the rough machined machining stress of casting through tempering after the roughing; Endoporus and the semifinishing of cylindrical position then, the cylindrical finish turning is worked into finished size again, and then thick, the microhoning of endoporus is worked into finished size; Follow bead, back purged and packed again.
Concrete blasting technology parameter is following: will go up the semicircular ring protection that waistband is made with two block plates near the shoulder position after cylinder jacket machining finishes; With removable hand-held compressed air shotblasting machine; Can conveniently go up the waistband position to its grinding undercut that need strengthen, following table and part and handle, 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 that supports the antifatigue reinforcement of shoulder lower surface for ship machine cylinder jacket requires as follows; It is 1mm cast steel ball that shot-peening adopts diameter; Shot peening strength is the most frequently used A test piece 0.008-0.01 inch, and the semicircular ring protection is removed through after the bead in the pending surface of cylinder jacket like this; Bearing stress improves fatigue resistance.
Claims (1)
1. a stress peening process is characterized in that:
1. strengthening the position is that grinding undercut, following table and part go up the waistband position.
2. blasting technology parameter diameter is a 1mm 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 |
|---|---|---|---|
| CN2010102946151A CN102416601A (en) | 2010-09-27 | 2010-09-27 | Surface strengthening method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102946151A CN102416601A (en) | 2010-09-27 | 2010-09-27 | Surface strengthening method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102416601A true CN102416601A (en) | 2012-04-18 |
Family
ID=45941382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102946151A Pending CN102416601A (en) | 2010-09-27 | 2010-09-27 | Surface strengthening method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102416601A (en) |
Cited By (1)
| 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 |
-
2010
- 2010-09-27 CN CN2010102946151A patent/CN102416601A/en active Pending
Cited By (1)
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Jia Weizhen Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| DD01 | Delivery of document by public notice |
Addressee: Jia Weizhen Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120418 |