JPS5940204B2 - How to harden parts - Google Patents
How to harden partsInfo
- Publication number
- JPS5940204B2 JPS5940204B2 JP11955780A JP11955780A JPS5940204B2 JP S5940204 B2 JPS5940204 B2 JP S5940204B2 JP 11955780 A JP11955780 A JP 11955780A JP 11955780 A JP11955780 A JP 11955780A JP S5940204 B2 JPS5940204 B2 JP S5940204B2
- Authority
- JP
- Japan
- Prior art keywords
- parts
- quenching
- chute
- mesh belt
- water
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/63—Quenching devices for bath quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
Description
【発明の詳細な説明】 本発明はねじ等の小物の部品の焼入れ方法に関する。[Detailed description of the invention] The present invention relates to a method for hardening small parts such as screws.
従来、ねじ等の小物の部品の硬さを増すため、部品を所
定温度まで加熱したのち水槽中に貯留された焼入れ水中
に投入して急激に冷却する焼入れ方法が行われている。Conventionally, in order to increase the hardness of small parts such as screws, a quenching method has been used in which the parts are heated to a predetermined temperature and then placed in quenching water stored in a water tank to cool them rapidly.
然しなから、この焼入れ方法では、高温度に加熱された
部品が水槽中に貯留された焼入れ水中に没した瞬間に部
品の表面に水蒸気膜が発生する。However, in this quenching method, a steam film is generated on the surface of the part at the moment the part heated to a high temperature is immersed in quenching water stored in a water tank.
この水蒸気膜のため特に小物部品の場合にはその冷却速
度が鈍化し、所定時間内に所定温度にまで部品が冷却さ
れず、そのためこの部品の焼入れを行っても部品の硬さ
は所定値に達せず、部品の硬さのばらつきを招く等の欠
点が生じている。This water vapor film slows down the cooling rate, especially for small parts, and the parts are not cooled to the specified temperature within the specified time, so even if the parts are hardened, the hardness of the parts will not reach the specified value. This results in disadvantages such as variations in the hardness of parts.
本発明は上記欠点の除去を目的とするもので、以下、そ
の実施例を図面について説明する。The present invention aims to eliminate the above-mentioned drawbacks, and embodiments thereof will be described below with reference to the drawings.
１は本発明を利用した連続熱処理装置であり、加熱炉２
、焼入れ水槽３及び焼戻し炉４からなっている。1 is a continuous heat treatment apparatus using the present invention, and a heating furnace 2
, a quenching water tank 3 and a tempering furnace 4.
加熱炉２及び焼戻し炉４内には常時低速度で移動する第
１及び第２メツシュベルトコンベヤ５，６が配置され、
さらにこの第１及び第２メツシュベルトコンベヤ５，６
を連続させるように、かつ焼入れ水槽３内で焼入れされ
た部品を焼戻し炉４に送るように第３メツシユベルトコ
ンベヤ７が配置されている。Inside the heating furnace 2 and the tempering furnace 4, first and second mesh belt conveyors 5 and 6, which always move at a low speed, are arranged.
Furthermore, the first and second mesh belt conveyors 5, 6
A third mesh belt conveyor 7 is arranged so as to continuously convey the parts quenched in the quenching water tank 3 to the tempering furnace 4.
前記第１及び第２メツシュベルトコンベヤ５．６にはエ
ンドレスのメツシュベルト８が駆動側回転ドラム９及び
従動側回転ドラム１０により移動するように構成され、
さらにこのメツシュベルト８に所定の張力が付与されて
いる。The first and second mesh belt conveyors 5.6 are configured such that an endless mesh belt 8 is moved by a driving side rotating drum 9 and a driven side rotating drum 10,
Further, a predetermined tension is applied to this mesh belt 8.
第１メツシユベルトコンベヤ５の終端の下方にはメツシ
ュベルト８の幅よりも広い幅の傾斜面を有するシュート
１１が配置されている。A chute 11 having an inclined surface wider than the width of the mesh belt 8 is arranged below the terminal end of the first mesh belt conveyor 5.
このシュート１１の下端は前記焼入れ水槽３の焼入れ水
中に没し、さらに第３メツシユベルトコンベヤ７に近接
する位置に達するように配置されている。The lower end of this chute 11 is submerged in the quenching water in the quenching water tank 3 and is arranged so as to reach a position close to the third mesh belt conveyor 7.
従って、第１メツシユベルトコンベヤ５の終端カラ落下
する部品は第１メツシユベルトコンベヤ５の終端の直下
よりも遠く離れた位置に着水するように構成されている
。Therefore, the parts falling from the end of the first mesh belt conveyor 5 are configured to land on the water at a position farther away than directly below the end of the first mesh belt conveyor 5.
前記シュート１１の上方には排気筒１２が配置され、こ
の排気筒１２はその開口面が焼入れ水槽３内の部品の着
水位置を覆い、かつ前記シュート１１の部品の落下位置
をほぼ覆うように形成されている。An exhaust pipe 12 is arranged above the chute 11, and the opening surface of the exhaust pipe 12 covers the landing position of the parts in the quenching water tank 3, and almost covers the falling position of the parts in the chute 11. It is formed.
次に本発明の要部について説明する。Next, the main parts of the present invention will be explained.
前記シュート１１の上端付近には噴射ノズル１３が取付
けられ、シュート１１の全幅にわたって大量の焼入れ水
が噴射され、部品がすべて均等に焼入れ水を浴びるよう
に構成されている。An injection nozzle 13 is attached near the upper end of the chute 11, and a large amount of quenching water is injected over the entire width of the chute 11, so that all parts are evenly exposed to the quenching water.
この焼入れ水は焼入れ水槽３からポンプ１４により吸上
げられ、噴射ノズル１３に達している。This quenching water is sucked up from the quenching water tank 3 by a pump 14 and reaches the injection nozzle 13.
上記連続熱処理装置において、加熱炉２中で所定温度ま
で加熱された部品は、第１メツシユベルトコンベヤ５の
終端から自然落下してシュート１１上に達する。In the continuous heat treatment apparatus described above, the parts heated to a predetermined temperature in the heating furnace 2 naturally fall from the end of the first mesh belt conveyor 5 and reach the chute 11 .
この時、シュート１１の傾斜面にに沿って焼入れ水が噴
射されているため部品のシュート１１への衝突は緩和さ
れ、シュート１１の傾斜面に沿って滑走する。At this time, since the quenching water is injected along the slope of the chute 11, the collision of the parts against the chute 11 is alleviated, and the parts slide along the slope of the chute 11.
そのため、部品は全く損傷を受けずに焼入れ水槽３内に
着水する。Therefore, the parts land in the quenching water tank 3 without being damaged at all.
又、シュート１１上において部品が大量の噴射水を浴び
る時に部品の周面に水蒸気膜が発生するが、すぐに噴射
水により洗い落され、部品の周面に水蒸気膜は付着せず
、部品は焼入れ水槽３水に貯留された焼入れ水中に没し
、所定の焼入れを行う。Furthermore, when a part is exposed to a large amount of water jetted on the chute 11, a water vapor film is generated on the circumferential surface of the part, but it is quickly washed away by the jetted water, and the water vapor film does not adhere to the peripheral surface of the part. It is immersed in the quenching water stored in the quenching water tank 3 to perform the prescribed quenching.
以上説明したように、本発明はメツシュベルトから部品
が焼入れ水槽に落下する前に部品に噴射水を浴びせるよ
うに構成しているため、部品が落下時に全く損傷を受け
ないという利点があるばかりか、部品には噴射水によっ
て噴射焼入れが行われ、部品の表面への水蒸気膜の付着
がないため部品の冷却速度の鈍化を招くこともなく、所
定の焼入れを行うことができるオリ点がある。As explained above, since the present invention is configured so that the parts are sprayed with water before they fall from the mesh belt into the quenching tank, there is an advantage that the parts are not damaged at all when they fall. Parts are jet quenched with jet water, and since there is no water vapor film attached to the surface of the part, there is an oripoint at which a predetermined quenching can be performed without slowing down the cooling rate of the part.
又、加熱から冷却までの時間も最小限に押えられている
ため所望の焼入れが行える利点もある。Furthermore, since the time from heating to cooling is kept to a minimum, there is also the advantage that desired hardening can be performed.
図は本発明を利用した装置の全体概略図である。
１・・・・・・連続熱処理装置、２・・・・・・加熱炉
、３・・・・・・焼入れ水槽、４・・・・・・焼戻し炉
、５・・・・・・第１メツシユベルトコンベヤ、６・・
・・・・第２メツシユベルトコンヘヤ、７・・・・・・
第３メツシユベルトコンベヤ、８・・・・・・メツシュ
ベルト、９・・・・・・駆動側回転ドラム、１０・・・
・・・従動側回転ドラム、１１・・・・・・シュート、
１２・・・・・・排気筒、１３・・・・・・噴射ノズル
、１４・・・・・・ポンプ。The figure is an overall schematic diagram of an apparatus using the present invention. 1... Continuous heat treatment device, 2... Heating furnace, 3... Quenching water tank, 4... Tempering furnace, 5... First mesh belt conveyor, 6...
...Second mesh belt conveyor, 7...
Third mesh belt conveyor, 8...Mesh belt, 9...Drive side rotating drum, 10...
... Driven side rotating drum, 11 ... Chute,
12... Exhaust pipe, 13... Injection nozzle, 14... Pump.
Claims (1)
を所定温度まで加熱し、コンベヤの終端から自然落下に
よりシュート１１上に落下させ、部品がシュート１１上
を滑走する際に焼入れ水を噴射して部品の焼入れを行う
とともに部品を貯留された焼入れ水中に送り、これを水
中に没して所定の焼入れを行うことを特徴とする部品の
焼入れ方法。1. Parts moving at a low speed by a conveyor in the heating furnace 2 are heated to a predetermined temperature, and are allowed to fall onto the chute 11 by gravity from the end of the conveyor, and quenching water is injected as the parts slide on the chute 11. A method for quenching parts, which comprises: quenching the parts, sending the parts into stored quenching water, submerging the parts in the water, and quenching the parts to a predetermined degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11955780A JPS5940204B2 (en) | 1980-08-28 | 1980-08-28 | How to harden parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11955780A JPS5940204B2 (en) | 1980-08-28 | 1980-08-28 | How to harden parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5743927A JPS5743927A (en) | 1982-03-12 |
| JPS5940204B2 true JPS5940204B2 (en) | 1984-09-28 |
Family
ID=14764258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11955780A Expired JPS5940204B2 (en) | 1980-08-28 | 1980-08-28 | How to harden parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5940204B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03240914A (en) * | 1990-02-16 | 1991-10-28 | Fuji Denshi Kogyo Kk | Method and device for high-frequency hardening |
| CN103074472A (en) * | 2013-01-08 | 2013-05-01 | 凌伯勇 | Oil quenching device and quenching technique thereof |
| CN108411091A (en) * | 2016-08-30 | 2018-08-17 | 蒋盘君 | The automatic heat treatment system of micro drill stainless steel handle of a knife |
-
1980
- 1980-08-28 JP JP11955780A patent/JPS5940204B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5743927A (en) | 1982-03-12 |
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