JPH06101993A - Gun barrel and manufacture thereof - Google Patents
Gun barrel and manufacture thereofInfo
- Publication number
- JPH06101993A JPH06101993A JP4273429A JP27342992A JPH06101993A JP H06101993 A JPH06101993 A JP H06101993A JP 4273429 A JP4273429 A JP 4273429A JP 27342992 A JP27342992 A JP 27342992A JP H06101993 A JPH06101993 A JP H06101993A
- Authority
- JP
- Japan
- Prior art keywords
- reinforced plastic
- plastic layer
- fiber reinforced
- barrel
- carbon fiber
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A21/00—Barrels; Gun tubes; Muzzle attachments; Barrel mounting means
- F41A21/02—Composite barrels, i.e. barrels having multiple layers, e.g. of different materials
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Laminated Bodies (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、砲身及びその製造方法
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a barrel and a manufacturing method thereof.
【０００２】[0002]
【従来の技術及びその課題】野戦砲、機関砲等の火砲の
砲身は、一般に超高張力鋼のみを材料としているため、
重量物である。しかして、近時、火砲の旋回性能の向
上、ヘリコプター等による輸送の迅速性等が求められ、
砲身の軽量化が要請されている。このため、従来、砲身
鋼の強度を向上させ、可及的に薄肉化することによつて
軽量化している。しかしながら、砲身鋼の高強度化に伴
つて靱性の低下、被切削性の悪化等の問題を生じること
から、砲身鋼の高強度化による軽量化もほぼ限界に達し
ており、更なる火砲の軽量化はこの面からは困難な現状
にある。2. Description of the Related Art Since gun barrels of field artillery guns, machine guns, etc. are generally made of only ultra-high strength steel,
It is a heavy load. However, recently, it has been required to improve the turning performance of the gun and the speed of transportation by a helicopter,
It is required to reduce the weight of the barrel. Therefore, conventionally, the strength of the barrel steel has been improved, and the weight has been reduced by making the wall thickness as thin as possible. However, as the strength of the barrel steel increases, the toughness decreases and the machinability deteriorates.Therefore, the weight reduction by increasing the strength of the barrel steel has almost reached its limit. From this aspect, the current situation is difficult.
【０００３】[0003]
【課題を解決するための手段】本発明は、このような従
来の技術的課題に鑑みてなされたものであり、請求項１
の構成は、発射装薬が装着される薬室部を少なくとも含
む基端部を厚肉部とし、該厚肉部よりも先端側を薄肉部
とする筒状をなす砲身本体を鋼製とし、該薄肉部の外周
面に、炭素繊維強化プラスチック層を形成し、該炭素繊
維強化プラスチック層の上に、ガラス繊維強化プラスチ
ック層又はアラミド繊維強化プラスチック層からなる保
護層を被覆形成することを特徴とする砲身である。そし
て、請求項２の構成は、発射装薬が装着される薬室部を
少なくとも含む基端部を厚肉部とし、該厚肉部よりも先
端側を薄肉部とする筒状をなす砲身本体を鋼製とし、該
薄肉部の外周面に、可塑化した熱可塑性樹脂と炭素繊維
とを使用する炭素繊維強化プラスチック層を、フィラメ
ントワインディングによつて形成し、その後、該炭素繊
維強化プラスチック層の上に、可塑化した熱可塑性樹脂
とガラス繊維又はアラミド繊維とを使用するガラス繊維
強化プラスチック層又はアラミド繊維強化プラスチック
層からなる保護層を、フィラメントワインディングによ
つて被覆形成、次いで冷却工程を施して該炭素繊維強化
プラスチック層及び該保護層を硬化させることを特徴と
する砲身の製造方法である。また、請求項３の構成は、
発射装薬が装着される薬室部を少なくとも含む基端部を
厚肉部とし、該厚肉部よりも先端側を薄肉部とする筒状
をなす砲身本体を鋼製とし、該薄肉部の外周面に、熱硬
化性樹脂と炭素繊維とを使用する炭素繊維強化プラスチ
ック層を、フィラメントワインディングによつて形成
し、その後、該炭素繊維強化プラスチック層の上に、熱
硬化性樹脂とガラス繊維又はアラミド繊維とを使用する
ガラス繊維強化プラスチック層又はアラミド繊維強化プ
ラスチック層からなる保護層を、フィラメントワインデ
ィングによつて被覆形成し、次いで加熱工程を施して該
炭素繊維強化プラスチック層及び該保護層を硬化させる
ことを特徴とする砲身の製造方法である。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional technical problems.
In the configuration, the base end portion including at least the drug chamber portion to which the propellant charge is mounted is a thick wall portion, and the barrel-shaped barrel main body having a thin wall portion on the tip side of the thick wall portion is made of steel, A carbon fiber reinforced plastic layer is formed on the outer peripheral surface of the thin portion, and a protective layer made of a glass fiber reinforced plastic layer or an aramid fiber reinforced plastic layer is formed on the carbon fiber reinforced plastic layer by coating. It is a barrel that does. The structure of claim 2 has a barrel-shaped barrel body in which a base end portion including at least a drug chamber portion in which a propellant charge is mounted is a thick-walled portion, and a tip side of the thick-walled portion is a thin-walled portion. Is made of steel, a carbon fiber reinforced plastic layer using a plasticized thermoplastic resin and carbon fibers is formed on the outer peripheral surface of the thin portion by filament winding, and then the carbon fiber reinforced plastic layer On the above, a protective layer consisting of a glass fiber reinforced plastic layer or a aramid fiber reinforced plastic layer using a plasticized thermoplastic resin and glass fibers or aramid fibers is formed by coating with a filament winding, followed by a cooling step. A method for manufacturing a barrel is characterized in that the carbon fiber reinforced plastic layer and the protective layer are cured. The configuration of claim 3 is
The base end portion including at least the drug chamber portion to which the propellant charge is attached is a thick-walled portion, and the barrel-shaped barrel main body having a thin-walled portion on the tip side of the thick-walled portion is made of steel, On the outer peripheral surface, a carbon fiber reinforced plastic layer using a thermosetting resin and carbon fibers is formed by filament winding, and then, on the carbon fiber reinforced plastic layer, the thermosetting resin and glass fibers or A protective layer consisting of a glass fiber reinforced plastic layer using aramid fiber or an aramid fiber reinforced plastic layer is coated and formed by filament winding, and then a heating step is applied to cure the carbon fiber reinforced plastic layer and the protective layer. This is a method for manufacturing a barrel, which is characterized by:
【０００４】[0004]
【作用】このような砲身は、薬室部に発射装薬を挿入す
ると共に砲身本体内に弾丸を装着した状態で、発射装薬
に火管によつて点火し、弾丸を発射ガスによつて砲身か
ら発射させる。しかして、発射装薬の燃焼による温度上
昇及び発射ガスの圧力上昇に基づき、砲身にエロージョ
ンを生ずるが、砲身内面は鋼にて製作されて耐エロージ
ョン性に優れると共に、発射ガスによつて高圧となる薬
室部を少なくとも含む基端部を鋼製の厚肉部としてある
ので、弾丸の発射に対する砲身の強度不足を生ずること
がなく、その耐久性が確保される。With such a barrel, the gunpowder charge is inserted into the chamber and the bullet is mounted in the barrel body. Fire from the barrel. Then, due to the temperature rise due to the combustion of the propellant charge and the pressure rise of the propellant gas, erosion occurs in the barrel, but the inner surface of the barrel is made of steel and is excellent in erosion resistance, and the propellant gas causes high pressure. Since the base end portion including at least the chemical chamber portion is a steel thick-walled portion, insufficient strength of the barrel for firing a bullet does not occur, and its durability is secured.
【０００５】一方、砲身本体の先端側は鋼製の薄肉部と
してあるが、この部分には発射装薬の燃焼による温度上
昇及び発射ガスの圧力上昇が厚肉部と比較して軽減され
るので、薄肉部に巻き付けた炭素繊維強化プラスチック
層及び保護層の作用と相まつて、砲身の強度が確保さ
れ、その耐久性が得られる。また、鋼製の薄肉部に、炭
素繊維強化プラスチック層とガラス繊維強化プラスチッ
ク層又はアラミド繊維強化プラスチック層からなる保護
層とを複層化せて形成したので、比強度に優れる炭素繊
維強化プラスチック層の弱点である耐衝撃性が、この保
護層によつて付与される。かくして、鋼のみを材料とす
る従来砲と比較して、厚さ、長さ等の大きさをほぼ同じ
として同等の強度を確保しながら、砲身の重量を約２５
％軽量化することができる。On the other hand, the tip end side of the barrel body is made of a thin-walled part made of steel, and since the temperature rise and the pressure rise of the propellant gas due to the combustion of the propellant charge are reduced in this part as compared with the thick-walled part. In combination with the action of the carbon fiber reinforced plastic layer wound around the thin portion and the protective layer, the strength of the barrel is secured and its durability is obtained. In addition, since the thin portion made of steel is formed by forming the carbon fiber reinforced plastic layer and the protective layer made of the glass fiber reinforced plastic layer or the aramid fiber reinforced plastic layer into a multilayer, the carbon fiber reinforced plastic layer having excellent specific strength is formed. The impact resistance, which is a weak point of, is imparted by this protective layer. Thus, compared to a conventional gun made of steel only, the weight of the barrel is approximately 25
% Weight can be reduced.
【０００６】そして、このような砲身は、熱可塑性樹脂
又は熱硬化性樹脂を使用してフィラメントワインディン
グによつて製造することができる。薄肉部の外周面に、
フィラメントワインディングにより、可塑化した熱可塑
性樹脂と炭素繊維とを使用する炭素繊維強化プラスチッ
ク層、及び可塑化した熱可塑性樹脂とガラス繊維又はア
ラミド繊維とを使用するガラス繊維強化プラスチック層
又はアラミド繊維強化プラスチック層からなる保護層を
順次に形成すれば、熱硬化性樹脂を使用するものに比し
て、成形サイクルが短く、量産に適するため、低コスト
になると共に、再加熱による再溶融が可能であるので、
損傷を受けた場合の修復作業が容易である。Such a barrel can be manufactured by filament winding using a thermoplastic resin or a thermosetting resin. On the outer peripheral surface of the thin part,
By filament winding, a carbon fiber reinforced plastic layer using a plasticized thermoplastic resin and carbon fiber, and a glass fiber reinforced plastic layer or aramid fiber reinforced plastic using the plasticized thermoplastic resin and glass fiber or aramid fiber By sequentially forming a protective layer consisting of layers, the molding cycle is shorter and it is suitable for mass production as compared with the case where a thermosetting resin is used, resulting in low cost and remelting by reheating. So
Repair work is easy when damaged.
【０００７】また、薄肉部の外周面に、フィラメントワ
インディングにより、熱硬化性樹脂と炭素繊維とを使用
する炭素繊維強化プラスチック層、及び熱硬化性樹脂と
ガラス繊維又はアラミド繊維とを使用するガラス繊維強
化プラスチック層又はアラミド繊維強化プラスチック層
からなる保護層を順次に形成すれば、炭素繊維強化プラ
スチック層及び保護層の温度上昇に伴う軟化を良好に防
止することができる。On the outer peripheral surface of the thin portion, a carbon fiber reinforced plastic layer using a thermosetting resin and carbon fibers, and a glass fiber using a thermosetting resin and glass fibers or aramid fibers are provided by filament winding. By sequentially forming the protective layer including the reinforced plastic layer or the aramid fiber reinforced plastic layer, it is possible to favorably prevent softening of the carbon fiber reinforced plastic layer and the protective layer due to temperature rise.
【０００８】[0008]
【実施例】以下、本発明の実施例について図面を参照し
て説明する。図１〜図４は、熱可塑性樹脂を使用する本
発明に係る砲身の１実施例を示す。砲身１は、１３０Ｋ
ｇｆ／ｍｍ2 級超高張力鋼にて筒状に形成した砲身本体
２と、砲身本体２の外周面に形成した炭素繊維強化プラ
スチック層３と、この炭素繊維強化プラスチック層３の
上に被覆形成した保護層４とからなる。Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of a barrel according to the present invention using a thermoplastic resin. Gun barrel 1 is 130K
gf / mm 2 class barrel body 2 made of ultra high strength steel, carbon fiber reinforced plastic layer 3 formed on the outer peripheral surface of the barrel body 2, and coating formed on this carbon fiber reinforced plastic layer 3 The protective layer 4 is formed.
【０００９】砲身本体２は、発射装薬が装着される薬室
部５及びその付近、つまり薬室部５を少なくとも含む基
端部を厚肉部２ａとし、厚肉部２ａよりも先端側を薄肉
部２ｂとする。厚肉部２ａと薄肉部２ｂとの外周面の間
は、滑らかなテーパー面２ｃにて接続し、かつ、砲身本
体２の先端部である薄肉部２ｂの外周面の先端部は、滑
らかなテーパー面２ｄにて接続させて次第に厚肉に形成
し、炭素繊維強化プラスチック層３及び保護層４を薄肉
部２ｂに巻付ける際に、緊密な巻付けが容易になされる
形状を与えてある。保護層４は、ガラス繊維強化プラス
チック層又はアラミド繊維強化プラスチック層からな
る。The barrel main body 2 has a thick wall portion 2a at and near a drug chamber portion 5 to which a propellant charge is attached, that is, a base end portion including at least the drug chamber portion 5, and a tip end side of the thick wall portion 2a. The thin portion 2b is used. A smooth taper surface 2c is connected between the outer peripheral surfaces of the thick wall portion 2a and the thin wall portion 2b, and the tip of the outer peripheral surface of the thin wall portion 2b, which is the tip of the barrel main body 2, has a smooth taper. The surface 2d is connected to form a gradually thicker wall, and when the carbon fiber reinforced plastic layer 3 and the protective layer 4 are wound around the thin portion 2b, a shape is provided that facilitates tight winding. The protective layer 4 is composed of a glass fiber reinforced plastic layer or an aramid fiber reinforced plastic layer.
【００１０】この砲身本体２の底部１ａは閉塞され、前
端部が砲口１ｂを形成し、砲身本体２の内底部に発射装
薬が挿入される薬室部５を形成するので、薬室部５及び
その付近を厚肉部２ａとし、耐圧性を確保すると共に、
発射によるエロージョンの影響を確実に防止させる。The bottom portion 1a of the barrel body 2 is closed, the front end portion forms a muzzle 1b, and the inner bottom portion of the barrel body 2 forms a medicine chamber portion 5 into which a propellant charge is inserted. 5 and its vicinity are formed as thick portions 2a to ensure pressure resistance and
It surely prevents the effects of erosion caused by firing.
【００１１】次に、このような砲身１の熱可塑性樹脂を
使用する製造方法について説明する。図３に示すように
例えば旋盤式のフィラメントワインディング機の一対の
クランプ６ａ，６ｂに砲身本体２を挟着し、砲身本体２
にその中心軸線回りの回転を与える。この状態で、薄肉
部２ｂの外周面にプリプレグ７を所定の張力を与えなが
ら巻き付ける。このプリプレグ７は、連続繊維からなる
炭素繊維（カーボンフィラメント）に硬化剤を配合した
熱可塑性樹脂（例えばナイロン１２）を含浸させて乾燥
し、半硬化状態にした成形材である。Next, a manufacturing method using such a thermoplastic resin for the barrel 1 will be described. As shown in FIG. 3, the barrel main body 2 is clamped between a pair of clamps 6a and 6b of a lathe type filament winding machine.
Gives the rotation about its central axis. In this state, the prepreg 7 is wound around the outer peripheral surface of the thin portion 2b while applying a predetermined tension. The prepreg 7 is a molding material that is made into a semi-cured state by impregnating a carbon fiber (carbon filament) made of continuous fibers with a thermoplastic resin (for example, nylon 12) containing a curing agent and drying the resin.
【００１２】そして、薄肉部２ｂに巻き付けるプリプレ
グ７は、図４に示すように水素ガスを燃焼させて形成し
た火炎８（約１７０℃）にて、酸化防止を兼ねて加熱し
て可塑化状態で供給し、押えローラ１０によつて押し付
けながら、薄肉部２ｂの全長に亘つて付着させる。薄肉
部２ｂに万遍なくプリプレグ７が巻付けられたならプリ
プレグ７の巻付けを終了し、冷却工程を施して熱可塑性
樹脂を硬化させ、炭素繊維強化プラスチック層３とす
る。厚肉部２ａと薄肉部２ｂとの間、及び、薄肉部２ｂ
の先端部は、滑らかなテーパー面２ｃ，２ｄにて接続さ
せ、次第に厚肉に形成してあるので、薄肉部２ｂに炭素
繊維強化プラスチック層３を緊密に巻付けることができ
る。この炭素繊維強化プラスチック層３は、砲身本体２
の先端部のテーパー面２ｄから厚肉部２ａに接続するテ
ーパー面２ｃに向けて、図１に示すように次第に厚肉と
なるように形成し、薬室部５における燃焼ガス圧を強く
受ける厚肉部２ａ側の強度を次第に高めてある。The prepreg 7 wound around the thin portion 2b is heated in a plasticizing state by heating with a flame 8 (about 170 ° C.) formed by burning hydrogen gas as shown in FIG. The thin film portion 2b is supplied and adhered over the entire length of the thin portion 2b while being pressed by the pressing roller 10. When the prepreg 7 is evenly wound around the thin portion 2b, the winding of the prepreg 7 is completed, and a cooling step is performed to cure the thermoplastic resin to form the carbon fiber reinforced plastic layer 3. Between the thick portion 2a and the thin portion 2b, and the thin portion 2b
Since the tip ends of the are connected by smooth tapered surfaces 2c and 2d and are gradually thickened, the carbon fiber reinforced plastic layer 3 can be tightly wound around the thin portion 2b. This carbon fiber reinforced plastic layer 3 is the barrel body 2
As shown in FIG. 1, the taper surface 2d at the tip of the chamber is gradually thickened toward the taper surface 2c connected to the thick wall portion 2a. The strength of the meat portion 2a side is gradually increased.
【００１３】その後、炭素繊維強化プラスチック層３の
上に、同じくプリプレグを使用するフィラメントワイン
ディングによつて、ガラス繊維強化プラスチック層又は
アラミド繊維強化プラスチック層からなる保護層４を被
覆形成する。通常の炭素繊維強化プラスチック層３は、
ＴＳ＝１９０Ｋｇｆ／ｍｍ2 、ヤング率＝２３０００Ｋ
ｇｆ／ｍｍ2 、比重＝１．６程度で、比強度が高いが、
砲身１の苛酷な使用環境における耐衝撃性に劣る。しか
して、保護層４は、炭素繊維強化プラスチック層３の耐
衝撃性を改善するために形成するものであり、耐衝撃性
に優れるガラス繊維又はアラミド繊維を補強材として、
薄肉部２ｂの中心軸線方向にほぼ均一厚さにて形成す
る。樹脂は、熱可塑性樹脂を使用する。Thereafter, a protective layer 4 made of a glass fiber reinforced plastic layer or an aramid fiber reinforced plastic layer is formed on the carbon fiber reinforced plastic layer 3 by filament winding using a prepreg. The normal carbon fiber reinforced plastic layer 3 is
TS = 190 Kgf / mm 2 , Young's modulus = 23000 K
gf / mm 2 , specific gravity = 1.6, high specific strength,
Inferior in impact resistance of the barrel 1 in severe operating environment. Therefore, the protective layer 4 is formed to improve the impact resistance of the carbon fiber reinforced plastic layer 3, and glass fiber or aramid fiber having excellent impact resistance is used as a reinforcing material.
The thin portion 2b is formed with a substantially uniform thickness in the central axis direction. As the resin, a thermoplastic resin is used.
【００１４】次に、熱硬化性樹脂を使用する砲身１の製
造方法について図１〜図３及び図５〜図７を参照して説
明する。この場合、熱可塑性樹脂を使用するときと同様
に砲身本体２にその中心軸線回りの回転を与え、カーボ
ンフィラメントに熱硬化性樹脂を含浸させて半硬化状態
にしたプリプレグ１７を、図３に示すように所定の張力
を与えながら薄肉部２ｂに巻き付ける。薄肉部２ｂに巻
き付けたプリプレグ１７は、図１に示すように砲身本体
２の先端部のテーパー面２ｄから厚肉部２ａに接続する
テーパー面２ｃに向けて、次第に厚肉となるように形成
する。Next, a method of manufacturing the barrel 1 using the thermosetting resin will be described with reference to FIGS. 1 to 3 and 5 to 7. In this case, as in the case where a thermoplastic resin is used, the prepreg 17 in which the barrel main body 2 is rotated about its central axis and the carbon filament is impregnated with the thermosetting resin to be in a semi-cured state is shown in FIG. Thus, the thin portion 2b is wrapped around while applying a predetermined tension. As shown in FIG. 1, the prepreg 17 wound around the thin portion 2b is formed so that the thickness gradually increases from the tapered surface 2d at the tip of the barrel body 2 toward the tapered surface 2c connected to the thick portion 2a. .
【００１５】その後、薄肉部２ｂに巻き付けたプリプレ
グ１７の上に、同じくプリプレグを使用するフィラメン
トワインディングによつて、ガラス繊維強化プラスチッ
ク層又はアラミド繊維強化プラスチック層からなる保護
層１４を被覆形成する。保護層１４は、耐衝撃性に優れ
るガラス繊維又はアラミド繊維を補強材として熱硬化性
樹脂を使用し、ほぼ均一厚さを与えてある。Thereafter, a protective layer 14 made of a glass fiber reinforced plastic layer or an aramid fiber reinforced plastic layer is formed on the prepreg 17 wound around the thin portion 2b by filament winding using the same prepreg. The protective layer 14 is made of a thermosetting resin with glass fiber or aramid fiber having excellent impact resistance as a reinforcing material, and has a substantially uniform thickness.
【００１６】次いで、保護層１４を形成した砲身本体２
を可撓性容器に入れ、オートクレーブによる加熱によつ
て熱硬化性樹脂を硬化させ、炭素繊維強化プラスチック
層１３及び保護層１４を形成する。オートクレーブによ
る硬化サイクルの１例を図５〜図７に示す。すなわち、
図５に示すように温度を所定時間毎に２．２〜２．８℃
／ｍｉｎにて上昇させ、２０２℃、２４８℃及び３１６
℃において所定時間保持した後、冷却する。その間、可
撓性容器内の真空度を図７に示すように制御すると共
に、可撓性容器外の圧力を図６に示すように制御し、空
気や蒸発成分を除去し、団結及び硬化させる。このよう
にして、薄肉部２ｂの外周面に、熱硬化性樹脂を使用す
る炭素繊維強化プラスチック層１３を形成し、この炭素
繊維強化プラスチック層１３の上に、保護層１４を被覆
形成した砲身１が製造される。Next, the barrel body 2 having the protective layer 14 formed thereon.
Is placed in a flexible container, and the thermosetting resin is cured by heating by an autoclave to form the carbon fiber reinforced plastic layer 13 and the protective layer 14. An example of a curing cycle by an autoclave is shown in FIGS. That is,
As shown in FIG. 5, the temperature is set to 2.2 to 2.8 ° C. every predetermined time.
/ Min, 202 ° C, 248 ° C and 316
After holding at ℃ for a predetermined time, it is cooled. Meanwhile, the degree of vacuum inside the flexible container is controlled as shown in FIG. 7, and the pressure outside the flexible container is controlled as shown in FIG. 6 to remove air and vaporized components, and to unite and cure. . In this way, the barrel 1 in which the carbon fiber reinforced plastic layer 13 using the thermosetting resin is formed on the outer peripheral surface of the thin portion 2b, and the carbon fiber reinforced plastic layer 13 is covered with the protective layer 14 is formed. Is manufactured.
【００１７】この砲身１は、薬室部５に発射装薬を挿入
すると共に砲身本体２内に弾丸を装着した状態で、発射
装薬に火管によつて点火し、その発射ガスによつて弾丸
を砲身１から発射させて使用される。しかして、発射装
薬の燃焼による温度上昇及び発射ガスの圧力上昇に基づ
き、砲身本体２の内面にエロージョンを生ずるが、砲身
本体２を超高張力鋼を材料として形成すると共に、特に
薬室部５を少なくとも含む基端部を厚肉部２ａとしてあ
るので、弾丸の発射に対する砲身１の強度不足を生ずる
ことがなく、その耐久性が確保される。熱硬化性樹脂を
使用すれば、熱による軟化が良好に防止される。This gun barrel 1 ignites the gunpowder charge by means of a fire tube, with the gunpowder charge inserted in the chamber 5 and a bullet mounted in the gun barrel body 2, It is used by firing a bullet from the barrel 1. Then, erosion occurs on the inner surface of the barrel main body 2 due to the temperature rise due to the combustion of the propellant charge and the pressure rise of the propellant gas. The barrel main body 2 is made of ultra-high-strength steel, and especially the chemical chamber portion is formed. Since the base end portion including at least 5 is the thick portion 2a, the barrel 1 does not have insufficient strength against the firing of a bullet, and its durability is secured. If a thermosetting resin is used, softening due to heat is favorably prevented.
【００１８】一方、砲身本体２の先端側は薄肉部２ｂと
してあるが、この部分には発射装薬の燃焼による温度上
昇及び発射ガスの圧力上昇が厚肉部２ａと比較して軽減
されるので、薄肉部２ｂに巻き付けた炭素繊維強化プラ
スチック層３，１３及び保護層４，１４の作用と相まつ
て、砲身１の強度が確保され、その耐久性が得られる。
また、鋼製の薄肉部２ｂに、炭素繊維強化プラスチック
層３，１３とガラス繊維強化プラスチック層又はアラミ
ド繊維強化プラスチック層からなる保護層４，１４とを
複層化せて形成したので、比強度に優れる炭素繊維強化
プラスチック層３，１３の弱点である耐衝撃性が、この
保護層４，１４によつて付与される。On the other hand, the tip end side of the barrel body 2 is formed as a thin portion 2b, and since the temperature rise and the pressure rise of the firing gas due to the combustion of the propellant charge are reduced in this portion as compared with the thick portion 2a. In combination with the actions of the carbon fiber reinforced plastic layers 3 and 13 and the protective layers 4 and 14 wound around the thin portion 2b, the strength of the barrel 1 is secured and its durability is obtained.
In addition, since the carbon fiber reinforced plastic layers 3 and 13 and the protective layers 4 and 14 made of the glass fiber reinforced plastic layer or the aramid fiber reinforced plastic layer are formed in multiple layers on the thin portion 2b made of steel, the specific strength is The impact resistance, which is a weak point of the carbon fiber reinforced plastic layers 3 and 13 excellent in heat resistance, is imparted by the protective layers 4 and 14.
【００１９】かくして、鋼のみを材料とする従来砲と比
較して、厚さ、長さ等の大きさをほぼ同じとして同等の
強度を確保しながら、重量を約２５％だけ軽量化するこ
とができる。また、熱可塑性樹脂を使用すれば、熱硬化
性樹脂を使用するものに比して、成形サイクルが短くな
つて量産に適し、低コストになると共に、再加熱による
再溶融が可能であるため、損傷を受けた場合の修復が容
易である。ところで、上記の実施例にあつては、プリプ
レグを使用するフィラメントワインディングによつて、
炭素繊維強化プラスチック層３，１３及び保護層４，１
４を形成したが、樹脂槽内の溶融樹脂に炭素繊維又はガ
ラス繊維若しくはアラミド繊維を浸漬させた後に、これ
を砲身本体２の薄肉部２ｂに巻き付けることもできる。Thus, compared with the conventional gun made of only steel, it is possible to reduce the weight by about 25% while maintaining the same strength while making the sizes such as thickness and length substantially the same. it can. In addition, when a thermoplastic resin is used, the molding cycle is shorter than that using a thermosetting resin, which is suitable for mass production, and at a low cost, because remelting by reheating is possible, It is easy to repair if damaged. By the way, in the above embodiment, by filament winding using a prepreg,
Carbon fiber reinforced plastic layers 3, 13 and protective layers 4, 1
Although No. 4 is formed, it is also possible to immerse the carbon fiber, the glass fiber, or the aramid fiber in the molten resin in the resin tank and then wind the carbon fiber, the glass fiber, or the aramid fiber around the thin portion 2b of the barrel body 2.
【００２０】[0020]
【発明の効果】以上の説明によつて理解されるように、
本発明に係る砲身によれば、鋼のみを材料とする従来砲
に比して、同じ大きさとして同等の強度を確保しながら
軽量化を図ることができる。加えて、炭素繊維強化プラ
スチック層の上に、ガラス繊維強化プラスチック層又は
アラミド繊維強化プラスチック層を被覆形成することに
より、繊維強化プラスチックによる複層構造を与えてあ
るので、耐衝撃性及び靱性に優れ、繊維強化プラスチッ
ク層の耐破壊性が向上する。その結果、砲身の運用条件
に充分に合致する砲身が得られ、火砲の信頼性が向上す
る。勿論、砲身への被弾に対しても、耐力が向上する。As can be understood from the above description,
According to the barrel according to the present invention, it is possible to reduce the weight as compared with the conventional gun made of only steel while maintaining the same size and the same strength. In addition, a glass fiber reinforced plastic layer or an aramid fiber reinforced plastic layer is formed on the carbon fiber reinforced plastic layer to form a multi-layer structure of the fiber reinforced plastic, which is excellent in impact resistance and toughness. The fracture resistance of the fiber reinforced plastic layer is improved. As a result, a barrel that sufficiently matches the operating conditions of the barrel is obtained, and the reliability of the gun is improved. Of course, the durability is improved even when the barrel is hit.
【図１】 本発明の１実施例に係る砲身を示す断面図。FIG. 1 is a sectional view showing a barrel according to an embodiment of the present invention.
【図２】 同じく図１のＩＩ−ＩＩ線断面を拡大して示
す図。FIG. 2 is an enlarged view showing a cross section taken along line II-II of FIG.
【図３】 同じく製造工程を示す断面図。FIG. 3 is a cross-sectional view showing the same manufacturing process.
【図４】 同じく製造工程を示す図。FIG. 4 is a view showing the same manufacturing process.
【図５】 同じくオートクレーブの温度−時間特性を示
す線図。FIG. 5 is a diagram showing temperature-time characteristics of the autoclave.
【図６】 同じくオートクレーブの圧力−時間特性を示
す線図。FIG. 6 is a diagram showing pressure-time characteristics of the autoclave.
【図７】 同じくオートクレーブの真空度−時間特性を
示す線図。FIG. 7 is a diagram showing a vacuum-time characteristic of the autoclave.
１：砲身、１ａ：底部、１ｂ：砲口、２：砲身本体、２
ａ：厚肉部、２ｂ：薄肉部、２ｃ，２ｄ：テーパー面、
３，１３：炭素繊維強化プラスチック層、４，１４：保
護層、５：薬室部、７，１７：プリプレグ、８：火炎、
１０：押えローラ。1: barrel, 1a: bottom, 1b: muzzle, 2: barrel body, 2
a: thick part, 2b: thin part, 2c, 2d: tapered surface,
3, 13: carbon fiber reinforced plastic layer, 4, 14: protective layer, 5: chemical chamber part, 7, 17: prepreg, 8: flame,
10: Presser roller.
Claims (3)
も含む基端部を厚肉部とし、該厚肉部よりも先端側を薄
肉部とする筒状をなす砲身本体を鋼製とし、該薄肉部の
外周面に、炭素繊維強化プラスチック層を形成し、該炭
素繊維強化プラスチック層の上に、ガラス繊維強化プラ
スチック層又はアラミド繊維強化プラスチック層からな
る保護層を被覆形成することを特徴とする砲身。1. A barrel-shaped barrel main body made of steel, wherein a base end portion including at least a drug chamber portion for mounting a propellant charge is a thick wall portion, and a tip end side of the thick wall portion is a thin wall portion. A carbon fiber reinforced plastic layer is formed on the outer peripheral surface of the thin portion, and a protective layer consisting of a glass fiber reinforced plastic layer or an aramid fiber reinforced plastic layer is formed on the carbon fiber reinforced plastic layer by coating. Gun barrel.
も含む基端部を厚肉部とし、該厚肉部よりも先端側を薄
肉部とする筒状をなす砲身本体を鋼製とし、該薄肉部の
外周面に、可塑化した熱可塑性樹脂と炭素繊維とを使用
する炭素繊維強化プラスチック層を、フィラメントワイ
ンディングによつて形成し、その後、該炭素繊維強化プ
ラスチック層の上に、可塑化した熱可塑性樹脂とガラス
繊維又はアラミド繊維とを使用するガラス繊維強化プラ
スチック層又はアラミド繊維強化プラスチック層からな
る保護層を、フィラメントワインディングによつて被覆
形成、次いで冷却工程を施して該炭素繊維強化プラスチ
ック層及び該保護層を硬化させることを特徴とする砲身
の製造方法。2. A barrel-shaped barrel main body having a base end portion including at least a drug chamber portion in which a propellant charge is mounted and a thick wall portion, and a thin wall portion on a tip end side of the thick wall portion is made of steel. , A carbon fiber reinforced plastic layer using a plasticized thermoplastic resin and carbon fibers is formed on the outer peripheral surface of the thin portion by filament winding, and then, on the carbon fiber reinforced plastic layer, a plastic layer is formed. A protective layer consisting of a glass fiber reinforced plastic layer or an aramid fiber reinforced plastic layer using a modified thermoplastic resin and a glass fiber or an aramid fiber, is formed by coating by filament winding, and then a cooling step is applied to the carbon fiber reinforced A method for manufacturing a barrel, which comprises curing a plastic layer and the protective layer.
も含む基端部を厚肉部とし、該厚肉部よりも先端側を薄
肉部とする筒状をなす砲身本体を鋼製とし、該薄肉部の
外周面に、熱硬化性樹脂と炭素繊維とを使用する炭素繊
維強化プラスチック層を、フィラメントワインディング
によつて形成し、その後、該炭素繊維強化プラスチック
層の上に、熱硬化性樹脂とガラス繊維又はアラミド繊維
とを使用するガラス繊維強化プラスチック層又はアラミ
ド繊維強化プラスチック層からなる保護層を、フィラメ
ントワインディングによつて被覆形成し、次いで加熱工
程を施して該炭素繊維強化プラスチック層及び該保護層
を硬化させることを特徴とする砲身の製造方法。3. A barrel-shaped barrel main body made of steel, wherein a base end portion including at least a drug chamber portion for mounting a propellant charge is a thick wall portion, and a tip end side of the thick wall portion is a thin wall portion. , A carbon fiber reinforced plastic layer using a thermosetting resin and carbon fibers is formed on the outer peripheral surface of the thin portion by filament winding, and then, a thermosetting resin is formed on the carbon fiber reinforced plastic layer. A protective layer consisting of a glass fiber reinforced plastic layer or a aramid fiber reinforced plastic layer using a resin and glass fiber or aramid fiber is coated and formed by filament winding, and then a heating step is applied to the carbon fiber reinforced plastic layer and A method for manufacturing a barrel, which comprises curing the protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4273429A JPH06101993A (en) | 1992-09-18 | 1992-09-18 | Gun barrel and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4273429A JPH06101993A (en) | 1992-09-18 | 1992-09-18 | Gun barrel and manufacture thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06101993A true JPH06101993A (en) | 1994-04-12 |
Family
ID=17527783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4273429A Pending JPH06101993A (en) | 1992-09-18 | 1992-09-18 | Gun barrel and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06101993A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5692334A (en) * | 1995-12-18 | 1997-12-02 | Roland J. Christensen Family Limited Partnership | Primarily independent composite/metallic gun barrel |
| EP0970340A2 (en) * | 1998-01-26 | 2000-01-12 | Remington Arms Company, Inc. | Small caliber gun barrel |
| US6289620B1 (en) * | 1998-09-21 | 2001-09-18 | S.P.A. Fabbrica Bresciana Armi | Smooth bore rifle barrel |
| US6758004B2 (en) * | 1999-05-14 | 2004-07-06 | Michaels Of Oregon Co. | Firearm barrel manufacturing methods and barrel assemblies |
| WO2009039940A1 (en) | 2007-09-24 | 2009-04-02 | Rheinmetall Waffe Munition Gmbh | Weapon barrel in a lightweight construction |
| WO2011146144A3 (en) * | 2010-01-06 | 2012-03-15 | Jason Christensen | Segmented composite barrel for weapon |
| US11385013B2 (en) | 2016-07-01 | 2022-07-12 | Blackpowder Products, Inc. | Hybrid carbon—steel firearm barrel |
| CN115897004A (en) * | 2023-01-05 | 2023-04-04 | 福建东方鑫威纺织科技有限公司 | High-resistance multifunctional polyester draw textured yarn |
| USD1018757S1 (en) | 2020-09-17 | 2024-03-19 | Blackpowder Products, Inc. | Firearm barrel |
-
1992
- 1992-09-18 JP JP4273429A patent/JPH06101993A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5692334A (en) * | 1995-12-18 | 1997-12-02 | Roland J. Christensen Family Limited Partnership | Primarily independent composite/metallic gun barrel |
| EP0970340A2 (en) * | 1998-01-26 | 2000-01-12 | Remington Arms Company, Inc. | Small caliber gun barrel |
| EP0970340A4 (en) * | 1998-01-26 | 2002-01-09 | Ra Brands Llc | Small caliber gun barrel |
| US6289620B1 (en) * | 1998-09-21 | 2001-09-18 | S.P.A. Fabbrica Bresciana Armi | Smooth bore rifle barrel |
| US6758004B2 (en) * | 1999-05-14 | 2004-07-06 | Michaels Of Oregon Co. | Firearm barrel manufacturing methods and barrel assemblies |
| US7152357B2 (en) | 1999-05-14 | 2006-12-26 | Michaels Of Oregon Co. | Composite firearm barrel assemblies |
| WO2009039940A1 (en) | 2007-09-24 | 2009-04-02 | Rheinmetall Waffe Munition Gmbh | Weapon barrel in a lightweight construction |
| EP2198233B1 (en) * | 2007-09-24 | 2015-08-05 | Rheinmetall Waffe Munition GmbH | Weapon barrel in a lightweight construction |
| WO2011146144A3 (en) * | 2010-01-06 | 2012-03-15 | Jason Christensen | Segmented composite barrel for weapon |
| US8677670B2 (en) | 2010-01-06 | 2014-03-25 | Jason Christensen | Segmented composite barrel for weapon |
| US11385013B2 (en) | 2016-07-01 | 2022-07-12 | Blackpowder Products, Inc. | Hybrid carbon—steel firearm barrel |
| USD1018757S1 (en) | 2020-09-17 | 2024-03-19 | Blackpowder Products, Inc. | Firearm barrel |
| CN115897004A (en) * | 2023-01-05 | 2023-04-04 | 福建东方鑫威纺织科技有限公司 | High-resistance multifunctional polyester draw textured yarn |
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