JPS6344939B2 - - Google Patents
Info
- Publication number
- JPS6344939B2 JPS6344939B2 JP2540481A JP2540481A JPS6344939B2 JP S6344939 B2 JPS6344939 B2 JP S6344939B2 JP 2540481 A JP2540481 A JP 2540481A JP 2540481 A JP2540481 A JP 2540481A JP S6344939 B2 JPS6344939 B2 JP S6344939B2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- pin boss
- boss portion
- treatment
- ring
- 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.)
- Expired
Links
- 238000011282 treatment Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 5
- 238000005728 strengthening Methods 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/10—Connection to driving members
- F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
- F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
【発明の詳細な説明】
本発明は内燃機関用ピストンのピンボス部強化
方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for strengthening a pin boss portion of a piston for an internal combustion engine.
エンジンの高出力化に伴い、ピストンのピンボ
ス部の強度が問題となる場合がある。ピンボス部
の強化方法としては、従来ピストン設計面からの
対策（ピストンピン穴径の増加ボス間距離の増加
によるピンボス部受圧面積の低下、およびピン穴
部サイドリリーフ化等）および加工方法（ピン穴
部面粗さ低下、ロールバニツシユ）からの対策が
取られてきたが十分とは云えない。 As the output of engines increases, the strength of the pin boss portion of the piston may become a problem. Methods for strengthening the pin boss include conventional piston design measures (increasing the piston pin hole diameter, decreasing the pressure receiving area of the pin boss by increasing the distance between the bosses, creating side relief in the pin hole, etc.) and processing methods (such as increasing the piston pin hole diameter, increasing the distance between the bosses, and creating a side relief in the pin hole). Countermeasures have been taken to prevent surface roughness (deterioration of surface roughness, roll burnishing), but these are not sufficient.
本発明は上記の事情に鑑みなされたものであつ
て、その目的とするところはリングトレーガ部の
剥離を生ずることなくピンボス部にT6処理を施
すことができて、ピンボス部の強化を計り得る内
燃機関用ピストンのピンボス部強化方法を提供す
ることにある。 The present invention was made in view of the above circumstances, and its purpose is to be able to perform T6 treatment on the pin boss portion without causing peeling of the ring trager portion, thereby strengthening the pin boss portion. An object of the present invention is to provide a method for strengthening a pin boss portion of a piston for an internal combustion engine.
以下、本発明を図面を参照して説明する。 Hereinafter, the present invention will be explained with reference to the drawings.
内燃機関ピストン用アルミニウム合金の熱処理
としてT5とT6が広く行なわれている。 T5 and T6 are widely used as heat treatments for aluminum alloys for internal combustion engine pistons.
T6処理はT5処理に比較して室温から200℃に
おける機械的性質（引張強さ、疲れ強さ、耐力）
が優れているが、焼入れを行うために、リングト
レーガ部１を鋳ぐるみにしたアルミニウム製のピ
ストン２では、焼入れ時にリングトレーガ部１が
剥離する恐れがあるので使用できない。 T6 treatment has better mechanical properties (tensile strength, fatigue strength, yield strength) from room temperature to 200℃ compared to T5 treatment.
However, an aluminum piston 2 in which the ring trager part 1 is cast in order to be hardened cannot be used because the ring trager part 1 may peel off during quenching.
本発明ではこの点を考慮し、リングトレーガ鋳
ぐるみピストン２において、ピストン鋳造後、通
常のT5処理をピストン２に施す。これに、ピン
ボス部３を強化するため、ピンボス部３（ピン穴
部）だけを高周波誘導加熱、バーナー加熱等によ
り局部加熱し引続き水焼入れおよび焼戻しを実施
することによりピンボス部３周辺のみをT6処理
する。 In the present invention, in consideration of this point, in the Ring Traga cast piston 2, the piston 2 is subjected to the usual T5 treatment after the piston is cast. In addition, in order to strengthen the pin boss part 3, only the pin boss part 3 (pin hole part) is locally heated by high frequency induction heating, burner heating, etc., and then water quenching and tempering are performed, thereby giving T6 treatment only around the pin boss part 3. do.
これによりリングトレーガ部１の剥離を生ずる
ことなく、ピンボス部３にT6処理を施すことが
でき、ピンボス部３の強化が計られる。 As a result, the pin boss portion 3 can be subjected to the T6 treatment without peeling of the ring trager portion 1, and the pin boss portion 3 is strengthened.
本発明は以上詳述したように、リングトレーガ
鋳ぐるみピストン２の鋳造後、ピストン２にT5
処理を施し、ピストン２のピンボス部３を局部加
熱し引続き水焼入れおよび焼戻しを実施すること
によりピンボス部３周辺のみにT6処理を施すよ
うにしたから、リングトレーガ部１の剥離を生ず
ることなくピンボス部３にT6処理を施すことが
できピンボス部３の強化を計ることができる。 As described in detail above, the present invention provides a ring trager cast piston 2 after casting.
The pin boss part 3 of the piston 2 is heated locally, followed by water quenching and tempering, so that the T6 treatment is applied only to the area around the pin boss part 3, so that the ring trager part 1 does not peel off. The pin boss portion 3 can be subjected to T6 treatment, and the pin boss portion 3 can be strengthened.
図面は本発明方法の説明のためのピストンの縦
断面図である。
１はリングトレーガ部、２はピストン、３はピ
ンボス部。
The drawing is a longitudinal sectional view of a piston for explaining the method of the present invention. 1 is the ring trager part, 2 is the piston, and 3 is the pin boss part.
Claims (1)
ピストン２にT5処理を施し、ピストン２のピン
ボス部３を局部加熱し引続き水焼入れおよび焼戻
しを実施することによりピンボス部３周辺のみに
T6処理を施すようにしたことを特徴とする内燃
機関用ピストンのピンボス部強化方法。1 After casting the Ring Trager cast-in piston 2, the piston 2 is subjected to T5 treatment, the pin boss portion 3 of the piston 2 is locally heated, and then water quenching and tempering are performed to make the piston 2 only around the pin boss portion 3.
A method for strengthening a pin boss portion of a piston for an internal combustion engine, characterized by subjecting it to T6 treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2540481A JPS57140543A (en) | 1981-02-25 | 1981-02-25 | Reinforcing method of pin boss part in piston for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2540481A JPS57140543A (en) | 1981-02-25 | 1981-02-25 | Reinforcing method of pin boss part in piston for internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57140543A JPS57140543A (en) | 1982-08-31 |
| JPS6344939B2 true JPS6344939B2 (en) | 1988-09-07 |
Family
ID=12164966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2540481A Granted JPS57140543A (en) | 1981-02-25 | 1981-02-25 | Reinforcing method of pin boss part in piston for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57140543A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019056340A (en) * | 2017-09-22 | 2019-04-11 | 日立オートモティブシステムズ株式会社 | Piston for internal combustion engine and method for manufacturing piston |
-
1981
- 1981-02-25 JP JP2540481A patent/JPS57140543A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57140543A (en) | 1982-08-31 |
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