JP2002018566A - Injection sleeve for die casting machine - Google Patents
Injection sleeve for die casting machineInfo
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- JP2002018566A JP2002018566A JP2000207224A JP2000207224A JP2002018566A JP 2002018566 A JP2002018566 A JP 2002018566A JP 2000207224 A JP2000207224 A JP 2000207224A JP 2000207224 A JP2000207224 A JP 2000207224A JP 2002018566 A JP2002018566 A JP 2002018566A
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- injection sleeve
- casting machine
- die casting
- cast
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ダイカストマシン
において溶湯受けと加圧シリンダとを兼ねる射出スリー
ブの構造に係る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an injection sleeve which functions as both a melt receiver and a pressure cylinder in a die casting machine.
【０００２】[0002]
【従来の技術】アルミニウム合金またはマグネシウム合
金などの鋳造に使用されるダイカストマシンにおいて、
溶湯受けと加圧シリンダを兼ねる射出スリーブには、従
来よりＳＫＤ６１などの合金工具鋼が広く使用されてい
る。ＳＫＤ６１は熱伝導率が２９Ｗ／（ｍ・Ｋ）と比較
的高いので、金属の溶湯が射出ユニット内に供給された
後、短時間で冷却され、特に、射出スリーブに接する部
分で溶湯の凝固が始まる。そのため、射出スリーブから
金型内に注入された時、溶湯が直ちに凝固し、湯まわり
不良、湯境いなどが発生すると言う問題が生じていた。
特に、溶湯量の少ない薄肉製品を製造する場合には、湯
まわり不良、湯境い、充填不良などの鋳造欠陥が多数発
生する傾向にあった。2. Description of the Related Art In a die casting machine used for casting aluminum alloy or magnesium alloy,
Conventionally, alloy tool steel such as SKD61 has been widely used for an injection sleeve that also serves as a melt receiver and a pressure cylinder. Since the SKD 61 has a relatively high thermal conductivity of 29 W / (m · K), after the molten metal is supplied into the injection unit, it is cooled in a short time. Begin. Therefore, when the molten metal is injected into the mold from the injection sleeve, there is a problem that the molten metal is immediately solidified, resulting in poor running of the molten metal, a hot water boundary, and the like.
In particular, when a thin product having a small amount of molten metal is manufactured, a large number of casting defects such as poor running of the molten metal, poor hot water, and poor filling tend to occur.
【０００３】この様な問題を解決するため、図６に示す
ように、射出スリーブを、内筒１とその外周面を覆う外
筒２からなる複合構造とし、内筒１を熱伝導率が比較的
低い合金鋼（例えば、高珪素ステンレス鋼または析出硬
化系ステンレス鋼）で構成するとともに、内筒１と外筒
２の境界面に熱媒体が流れる流路４を形成したものが提
案されている（特願２０００−１４３４７７号）。この
射出スリーブでは、射出スリーブ内に溶湯を導入する
際、上記の流路４に加熱用の熱媒体を流すことにより、
射出スリーブの温度を所定の値以上に維持することがで
きる。このようにして、溶湯に対する保温性を高めるこ
とにより、薄肉製品を製造する際の歩留まりの向上を図
っている。In order to solve such a problem, as shown in FIG. 6, the injection sleeve has a composite structure comprising an inner cylinder 1 and an outer cylinder 2 covering the outer peripheral surface of the injection sleeve. There has been proposed a structure made of a very low alloy steel (for example, high silicon stainless steel or precipitation hardening stainless steel) and having a flow path 4 through which a heat medium flows at a boundary surface between the inner cylinder 1 and the outer cylinder 2. (Japanese Patent Application No. 2000-143377). In this injection sleeve, when a molten metal is introduced into the injection sleeve, a heat medium for heating is caused to flow through the above-described flow path 4,
The temperature of the injection sleeve can be maintained at or above a predetermined value. In this way, the yield at the time of manufacturing a thin-walled product is improved by increasing the heat retention of the molten metal.
【０００４】しかしながら、上記のような複合構造を備
えた射出スリーブは、内筒１と外筒２の境界面に流路４
を形成するために製造工程が複雑になり、製造コストが
高くなるという問題があった。[0004] However, the injection sleeve having the above-described composite structure has a flow path 4 at the interface between the inner cylinder 1 and the outer cylinder 2.
However, there is a problem in that the manufacturing process becomes complicated to form the semiconductor device, and the manufacturing cost increases.
【０００５】[0005]
【発明が解決しようとする課題】本発明は、以上のよう
な従来のダイカストマシン用射出スリーブの製造方法に
ついての問題点に鑑み成されたもので、本発明の目的
は、溶湯に対する保温性に優れ、且つ比較的低いコスト
で製造することができるダイカストマシン用射出スリー
ブを提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the conventional method for manufacturing an injection sleeve for a die casting machine. An object of the present invention is to provide an injection sleeve for a die casting machine that is excellent and can be manufactured at a relatively low cost.
【０００６】[0006]
【課題を解決するための手段】本発明のダイカストマシ
ン用射出スリーブは、内筒及び内筒の外周面を軸方向の
一部または全部にて覆う外筒からなる複合構造を備えた
ダイカストマシン用射出スリーブにおいて、前記内筒
は、３００℃における熱伝導率が２５Ｗ／（ｍ・Ｋ）以
下の合金鋼で構成され、前記外筒は、鋳鉄で構成され、
その内部に熱媒体の流路となる配管が鋳包み法により埋
め込まれていることを特徴とする。SUMMARY OF THE INVENTION An injection sleeve for a die casting machine according to the present invention is for a die casting machine having a composite structure comprising an inner cylinder and an outer cylinder that covers the outer peripheral surface of the inner cylinder partially or entirely in the axial direction. In the injection sleeve, the inner cylinder is made of an alloy steel having a thermal conductivity of 25 W / (m · K) or less at 300 ° C., and the outer cylinder is made of cast iron;
A pipe serving as a flow path of a heat medium is embedded therein by a cast-in method.
【０００７】本発明のダイカストマシン用射出スリーブ
によれば、内筒部分を比較的熱伝導率が低い合金鋼（鍛
鋼または鋳鋼）で構成するとともに、外筒の内部に熱媒
体の流路となる配管を鋳包み法により埋め込んでいるの
で、溶湯に対する保温性を確保するとともに、従来の構
造（内筒と外筒の境界面に流路を形成したもの）と比較
して射出スリーブの製造コストを引き下げることができ
る。According to the injection sleeve for a die casting machine of the present invention, the inner cylinder portion is made of alloy steel (forged steel or cast steel) having a relatively low thermal conductivity, and serves as a flow path of a heat medium inside the outer cylinder. The pipe is buried by the cast-in method, ensuring heat insulation against the molten metal and reducing the production cost of the injection sleeve compared to the conventional structure (a flow path is formed at the boundary between the inner and outer cylinders). Can be reduced.
【０００８】好ましくは、前記内筒を、Ｃ：０．１ｗｔ
％以下、Ｓｉ：２ｗｔ％以上６ｗｔ％以下、Ｍｎ：３ｗ
ｔ％以下、Ｎｉ：４ｗｔ％以上９ｗｔ％以下、Ｃｒ：８
ｗｔ％以上１８ｗｔ％以下、Ｍｏ：２ｗｔ％以下、Ｃ
ｕ：０．２ｗｔ％以上４ｗｔ％以下、Ｎｂ＋Ａｌ：０．
１ｗｔ％以上２ｗｔ％以下、残部が実質的にＦｅからな
る高珪素ステンレス鋼（鍛鋼または鋳鋼）で構成する。Preferably, the inner cylinder is C: 0.1 wt.
%, Si: 2 wt% or more and 6 wt% or less, Mn: 3 w
t% or less, Ni: 4 wt% to 9 wt%, Cr: 8
wt% or more and 18 wt% or less, Mo: 2 wt% or less, C
u: 0.2 wt% or more and 4 wt% or less, Nb + Al: 0.
It is made of high silicon stainless steel (forged steel or cast steel) composed of 1 wt% or more and 2 wt% or less and the balance substantially made of Fe.
【０００９】この高珪素ステンレス鋼は、比較的熱伝導
率が低く、アルミニウム溶湯に対する耐食性に優れ、更
に、繰り返しの熱衝撃に対する疲労強度に優れている。This high silicon stainless steel has relatively low thermal conductivity, excellent corrosion resistance to molten aluminum, and excellent fatigue strength against repeated thermal shocks.
【００１０】この場合、好ましくは、前記内筒の内周面
に窒化処理層を形成する。In this case, a nitriding layer is preferably formed on the inner peripheral surface of the inner cylinder.
【００１１】あるいは、前記内筒を、Ｃ：０．１ｗｔ％
以下、Ｓｉ：１ｗｔ％以下、Ｍｎ：１ｗｔ％以下、Ｎ
ｉ：２ｗｔ％以上８ｗｔ％以下、Ｃｒ：１４ｗｔ％以上
２０ｗｔ％以下、Ｃｕ：６ｗｔ％以下、Ｎｂ＋Ａｌ：
０．１ｗｔ％以上２ｗｔ％以下、残部が実質的にＦｅか
らなる析出硬化系ステンレス鋼（鍛鋼または鋳鋼）で構
成する。[0011] Alternatively, the inner cylinder is C: 0.1 wt%
Hereinafter, Si: 1 wt% or less, Mn: 1 wt% or less, N
i: 2 wt% to 8 wt%, Cr: 14 wt% to 20 wt%, Cu: 6 wt% or less, Nb + Al:
It is composed of a precipitation hardened stainless steel (forged steel or cast steel) consisting of 0.1 wt% or more and 2 wt% or less, with the balance substantially consisting of Fe.
【００１２】この析出硬化系ステンレス鋼も、比較的熱
伝導率が低く、アルミニウム溶湯に対する耐食性に優
れ、更に、繰り返しの熱衝撃に対する疲労強度に優れて
いる。This precipitation hardening stainless steel also has a relatively low thermal conductivity, excellent corrosion resistance to molten aluminum, and excellent fatigue strength against repeated thermal shock.
【００１３】この場合にも、好ましくは、前記内筒の内
周面に窒化処理層を形成する。Also in this case, preferably, a nitriding layer is formed on the inner peripheral surface of the inner cylinder.
【００１４】好ましくは、前記外筒をダクタイル鋳鉄で
構成し、その内部に熱媒体の流路となる鋼製の配管を鋳
包み法により埋め込む。[0014] Preferably, the outer cylinder is made of ductile cast iron, and a steel pipe serving as a flow path of a heat medium is buried therein by a cast-in method.
【００１５】なお、本発明のダイカストマシン用射出ス
リーブを単層構造で構成することもできる。その場合、
ダイカストマシン用射出スリーブを、上記組成からなる
高珪素ステンレス鋳鋼または析出硬化系ステンレス鋳鋼
で構成し、その内部に熱媒体の流路となる鋼製の配管を
鋳包み法により埋め込む。Incidentally, the injection sleeve for a die casting machine of the present invention may be constituted by a single layer structure. In that case,
The injection sleeve for a die-casting machine is made of cast high-silicon stainless steel or precipitation-hardened stainless cast steel having the above-described composition, and a steel pipe serving as a flow path of a heat medium is embedded therein by a cast-in method.
【００１６】この場合にも、好ましくは、射出スリーブ
の内周面に窒化処理層を形成する。Also in this case, preferably, a nitriding layer is formed on the inner peripheral surface of the injection sleeve.
【００１７】[0017]
【発明の実施の形態】（例１）図１に、本発明に基づく
射出スリーブの構造の一例を示す。(Embodiment 1) FIG. 1 shows an example of the structure of an injection sleeve according to the present invention.
【００１８】この射出スリーブは、内筒１と、その外周
面を軸方向の前方（図では左側）の過半部分で覆う外筒
２からなる複合構造を備えている。外筒２の内部には、
熱媒体の流路となる鋼製の配管３が鋳包み法により埋め
込まれている。この例では、内筒１は、高珪素ステンレ
ス鋼で構成され、外筒２は、ダクタイル鋳鉄で構成され
ている。This injection sleeve has a composite structure comprising an inner cylinder 1 and an outer cylinder 2 which covers the outer peripheral surface of the inner cylinder with the majority (the left side in the figure) in the axial direction. Inside the outer cylinder 2,
A steel pipe 3 serving as a heat medium flow path is embedded by a cast-in method. In this example, the inner cylinder 1 is made of high silicon stainless steel, and the outer cylinder 2 is made of ductile cast iron.
【００１９】次に、この射出スリーブの製造方法につい
て説明する。Next, a method for manufacturing the injection sleeve will be described.
【００２０】（ａ）下記組成の高珪素ステンレス鋼を、
図２に示す形状に機械加工し、内筒に相当する部材１ａ
を製作した：Ｃ ： ０．０１ｗｔ％、Ｓｉ： ４．２
ｗｔ％、Ｍｎ： ０．８ｗｔ％、Ｎｉ： ６．１ｗｔ
％、Ｃｒ：１１．８ｗｔ％、Ｍｏ： ０．６１ｗｔ％、
Ｃｕ： ３．０ｗｔ％、Ｎｂ： １．０ｗｔ％、Ｆｅ：
残部。(A) A high silicon stainless steel having the following composition:
A member 1a machined into the shape shown in FIG.
Was manufactured: C: 0.01 wt%, Si: 4.2
wt%, Mn: 0.8 wt%, Ni: 6.1 wt%
%, Cr: 11.8 wt%, Mo: 0.61 wt%,
Cu: 3.0 wt%, Nb: 1.0 wt%, Fe:
The rest.
【００２１】（ｂ）部材１ａの回りに、鋼製の配管３を
巻き付け、要所を溶接で部材１ａの外周面に固定した。(B) A steel pipe 3 was wrapped around the member 1a, and key points were fixed to the outer peripheral surface of the member 1a by welding.
【００２２】（ｃ）鋼製の配管３が巻き付けられた部材
１ａを、図３に示すように、砂型５の中に設置し、次い
で、部材１ａの内側に中子７を挿入した。(C) The member 1a around which the steel pipe 3 was wound was placed in a sand mold 5 as shown in FIG. 3, and then a core 7 was inserted inside the member 1a.
【００２３】（ｄ）誘導加熱炉でダクタイル鋳鉄を溶融
し、砂型５の中に注入した。(D) Ductile cast iron was melted in an induction heating furnace and poured into a sand mold 5.
【００２４】（ｅ）鋳鉄が凝固した後、砂型５を解体
し、取り出された鋳造品に１０５０℃で溶体化処理を施
した。(E) After the cast iron was solidified, the sand mold 5 was disassembled, and the cast product taken out was subjected to a solution treatment at 1050 ° C.
【００２５】（ｆ）鋳造品の外周面に粗加工を施して所
定の形状にした後、両端面、外周面及び内周面などに仕
上げ加工を施し、先に図１に示した形状に仕上げた。(F) After performing rough processing on the outer peripheral surface of the cast product to obtain a predetermined shape, finish processing is performed on the both end surfaces, the outer peripheral surface, the inner peripheral surface, and the like to finish the shape shown in FIG. Was.
【００２６】（ｇ）上記の様に機械加工が終わった部材
を電気炉内に収容し、温度５５０℃で３時間保持し、時
効硬化処理を施した。(G) The member having been machined as described above was housed in an electric furnace, kept at a temperature of 550 ° C. for 3 hours, and subjected to an age hardening treatment.
【００２７】（ｈ）次いで、上記部材をガス窒化炉内に
収容し、温度５３０℃で５０時間保持し、その表面に窒
化処理を施した。(H) Next, the above member was placed in a gas nitriding furnace, kept at a temperature of 530 ° C. for 50 hours, and a nitriding treatment was performed on the surface.
【００２８】（ｉ）最後に、上記部材の内周面に研削仕
上を施し、射出スリーブを完成させた。(I) Finally, the inner peripheral surface of the above member was ground and finished to complete an injection sleeve.
【００２９】（例２）図４に、本発明に基づく射出スリ
ーブの他の例を示す。(Example 2) FIG. 4 shows another example of an injection sleeve according to the present invention.
【００３０】この射出スリーブ１１は、高珪素ステンレ
ス鋳鋼製の本体の内部に、熱媒体の流路となる鋼製の配
管１３を、鋳包み法により埋め込んだものである。The injection sleeve 11 is obtained by embedding a steel pipe 13 serving as a flow path of a heat medium by a cast-in method inside a body made of high silicon stainless cast steel.
【００３１】次に、この射出スリーブの製造工程につい
て説明する。Next, the manufacturing process of the injection sleeve will be described.
【００３２】（ａ）図５に示すように、砂型１５を準備
し、その中に鋼製の配管１３を固定し、次いで、その内
側に中子１７を設置した。(A) As shown in FIG. 5, a sand mold 15 was prepared, a steel pipe 13 was fixed therein, and a core 17 was installed inside the pipe.
【００３３】（ｂ）先の例において示したものと同一組
成の高珪素ステンレス鋼を、誘導加熱炉で溶融し、砂型
１５の中に注入した。(B) High silicon stainless steel having the same composition as that shown in the previous example was melted in an induction heating furnace and injected into a sand mold 15.
【００３４】（ｃ）鋳鋼が凝固した後、砂型１５を解体
し、取り出された鋳造品に１０５０℃で溶体化処理を施
した。(C) After the cast steel was solidified, the sand mold 15 was disassembled, and the cast product taken out was subjected to a solution treatment at 1050 ° C.
【００３５】（ｄ）鋳造品の外周面に粗加工を施して所
定の形状にした後、両端面、外周面及び内周面に仕上げ
加工を施し、先に図４に示した形状に仕上げた。(D) The outer peripheral surface of the cast product is subjected to a roughing process to obtain a predetermined shape, and then the both end surfaces, the outer peripheral surface and the inner peripheral surface are subjected to finish working, and the finished product is previously finished to the shape shown in FIG. .
【００３６】（ｅ）上記の様に機械加工が終わった部材
をガス窒化炉内に収容し、温度５３０℃で５０時間保持
し、その表面に窒化処理を施すと同時に、時効硬化処理
を施した。(E) The member which has been machined as described above is housed in a gas nitriding furnace, kept at a temperature of 530 ° C. for 50 hours, and subjected to nitriding and age hardening at the same time. .
【００３７】（ｆ）最後に、上記部材の内周面に研削仕
上を施し、射出スリーブを完成させた。(F) Finally, the inner peripheral surface of the above member was subjected to a grinding finish to complete an injection sleeve.
【００３８】[0038]
【発明の効果】本発明の請求項１から６に係るダイカス
トマシン用射出スリーブによれば、内筒部分を比較的熱
伝導率が低い合金鋼で構成するとともに、外筒の内部に
熱媒体の流路となる配管を鋳包み法により埋め込んでい
るので、溶湯に対する保温性、耐食性及び耐熱疲労強度
に優れるとともに、従来の構造（図６）と比較して射出
スリーブの製造コストを引き下げることができる。According to the injection sleeve for a die casting machine according to the first to sixth aspects of the present invention, the inner cylinder portion is made of alloy steel having a relatively low thermal conductivity, and the heat medium of the outer cylinder is formed inside the outer cylinder. Since the pipe serving as the flow path is embedded by the cast-in method, it is excellent in heat retention, corrosion resistance and thermal fatigue strength against molten metal, and can reduce the manufacturing cost of the injection sleeve as compared with the conventional structure (FIG. 6). .
【００３９】また、本発明の請求項７から１０に係るダ
イカストマシン用射出スリーブによれば、比較的熱伝導
率が低い合金鋳鋼で構成するとともに、その内部に熱媒
体の流路となる配管を鋳包み法により埋め込んでいるの
で、溶湯に対する保温性及び耐食性を確保するととも
に、従来の構造と比較して射出スリーブの製造コストを
引き下げることができる。Further, according to the injection sleeve for a die casting machine according to claims 7 to 10 of the present invention, the injection sleeve is made of alloy cast steel having a relatively low thermal conductivity, and a pipe serving as a flow path of a heat medium is provided therein. Since it is embedded by the cast-in method, it is possible to secure the heat retention and corrosion resistance to the molten metal and to reduce the production cost of the injection sleeve as compared with the conventional structure.
【図１】本発明に基づく射出スリーブの構造の一例を示
す軸方向断面図。FIG. 1 is an axial sectional view showing an example of the structure of an injection sleeve according to the present invention.
【図２】本発明に基づく射出スリーブの製造方法の一例
について説明する図。FIG. 2 is a diagram illustrating an example of a method for manufacturing an injection sleeve according to the present invention.
【図３】本発明に基づく射出スリーブの製造方法の一例
について説明する図。FIG. 3 is a diagram illustrating an example of a method for manufacturing an injection sleeve according to the present invention.
【図４】本発明に基づく射出スリーブの構造の他の例を
示す軸方向断面図。FIG. 4 is an axial sectional view showing another example of the structure of the injection sleeve according to the present invention.
【図５】本発明に基づく射出スリーブの製造方法の他の
例について説明する図。FIG. 5 is a diagram illustrating another example of a method for manufacturing an injection sleeve according to the present invention.
【図６】従来の射出スリーブの構造の一例を示す軸方向
断面図。FIG. 6 is an axial sectional view showing an example of the structure of a conventional injection sleeve.
１・・・内筒、 ２・・・外筒、 ３・・・鋼製の配管、 ４・・・熱媒体の流路、 ５・・・砂型、 ７・・・中子、 １１・・・射出スリーブ、 １３・・・鋼製の配管、 １５・・・砂型、 １７・・・中子。 DESCRIPTION OF SYMBOLS 1 ... inner cylinder, 2 ... outer cylinder, 3 ... steel piping, 4 ... heat medium flow path, 5 ... sand mold, 7 ... core, 11 ... Injection sleeve, 13: steel pipe, 15: sand mold, 17: core.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ２２Ｃ 38/58 Ｃ２２Ｃ 38/58 // Ｃ２１Ｄ 1/06 Ｃ２１Ｄ 1/06 Ａ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) C22C 38/58 C22C 38/58 // C21D 1/06 C21D 1/06 A
Claims (10)
たは全部にて覆う外筒からなる複合構造を備えたダイカ
ストマシン用射出スリーブにおいて、 前記内筒は、３００℃における熱伝導率が２５Ｗ／（ｍ
・Ｋ）以下の合金鋼で構成され、 前記外筒は、鋳鉄で構成され、その内部に熱媒体の流路
となる配管が鋳包み法により埋め込まれていることを特
徴とするダイカストマシン用射出スリーブ。1. An injection sleeve for a die-casting machine provided with a composite structure comprising an inner cylinder and an outer cylinder that partially or entirely covers the outer peripheral surface of the inner cylinder in the axial direction, wherein the inner cylinder has heat conduction at 300 ° C. The rate is 25W / (m
-K) The injection for a die casting machine, wherein the outer cylinder is formed of cast iron, and a pipe serving as a flow path of a heat medium is embedded therein by a cast-in method. sleeve.
ｉ：２ｗｔ％以上６ｗｔ％以下、Ｍｎ：３ｗｔ％以下、
Ｎｉ：４ｗｔ％以上９ｗｔ％以下、Ｃｒ：８ｗｔ％以上
１８ｗｔ％以下、Ｍｏ：２ｗｔ％以下、Ｃｕ：０．２ｗ
ｔ％以上４ｗｔ％以下、Ｎｂ＋Ａｌ：０．１ｗｔ％以上
２ｗｔ％以下、残部が実質的にＦｅからなる高珪素ステ
ンレス鋼で構成されていることを特徴とする請求項１に
記載のダイカストマシン用射出スリーブ。2. The method according to claim 1, wherein the inner cylinder is C: 0.1 wt% or less,
i: 2 wt% or more and 6 wt% or less, Mn: 3 wt% or less,
Ni: 4 wt% to 9 wt%, Cr: 8 wt% to 18 wt%, Mo: 2 wt%, Cu: 0.2 w
2. The injection for a die casting machine according to claim 1, wherein the injection molding is made of a high-silicon stainless steel consisting of t% or more and 4 wt% or less, Nb + Al: 0.1 wt% or more and 2 wt% or less, and the balance substantially made of Fe. sleeve.
形成されていることを特徴とする請求項２に記載のダイ
カストマシン用射出スリーブ。3. The injection sleeve for a die casting machine according to claim 2, wherein the inner cylinder has a nitriding layer formed on an inner peripheral surface thereof.
ｉ：１ｗｔ％以下、Ｍｎ：１ｗｔ％以下、Ｎｉ：２ｗｔ
％以上８ｗｔ％以下、Ｃｒ：１４ｗｔ％以上２０ｗｔ％
以下、Ｃｕ：６ｗｔ％以下、Ｎｂ＋Ａｌ：０．１ｗｔ％
以上２ｗｔ％以下、残部が実質的にＦｅからなる析出硬
化系ステンレス鋼で構成されていることを特徴とする請
求項１に記載のダイカストマシン用射出スリーブ。4. The inner cylinder according to claim 1, wherein C: 0.1 wt% or less,
i: 1 wt% or less, Mn: 1 wt% or less, Ni: 2 wt%
% To 8% by weight, Cr: 14% to 20% by weight
Hereinafter, Cu: 6 wt% or less, Nb + Al: 0.1 wt%
2. The injection sleeve for a die casting machine according to claim 1, wherein the injection sleeve is made of a precipitation hardened stainless steel containing at least 2 wt% and a balance substantially made of Fe.
形成されていることを特徴とする請求項４に記載のダイ
カストマシン用射出スリーブ。5. The injection sleeve for a die casting machine according to claim 4, wherein the inner cylinder has a nitriding layer formed on an inner peripheral surface thereof.
れ、その内部に熱媒体の流路となる鋼製の配管が鋳包み
法により埋め込まれていることを特徴とする請求項１か
ら５のいずれかに記載のダイカストマシン用射出スリー
ブ。6. The method according to claim 1, wherein the outer cylinder is made of ductile cast iron, and a steel pipe serving as a flow path of a heat medium is embedded therein by a cast-in method. An injection sleeve for a die casting machine according to any one of the above.
以上６ｗｔ％以下、Ｍｎ：３ｗｔ％以下、Ｎｉ：４ｗｔ
％以上９ｗｔ％以下、Ｃｒ：８ｗｔ％以上１８ｗｔ％以
下、Ｍｏ：２ｗｔ％以下、Ｃｕ：０．２ｗｔ％以上４ｗ
ｔ％以下、Ｎｂ＋Ａｌ：０．１ｗｔ％以上２ｗｔ％以
下、残部が実質的にＦｅからなる高珪素ステンレス鋳鋼
で構成され、その内部に熱媒体の流路となる鋼製の配管
が鋳包み法により埋め込まれていることを特徴とするダ
イカストマシン用射出スリーブ。7. C: 0.1 wt% or less, Si: 2 wt%
6 wt% or less, Mn: 3 wt% or less, Ni: 4 wt%
% To 9 wt%, Cr: 8 wt% to 18 wt%, Mo: 2 wt% or less, Cu: 0.2 wt% to 4 w
t% or less, Nb + Al: 0.1 wt% or more and 2 wt% or less, and the balance is made of high silicon stainless cast steel substantially made of Fe, and a steel pipe serving as a flow path of a heat medium is cast inside by cast-in method. An injection sleeve for a die casting machine, which is embedded.
とを特徴とする請求項７に記載のダイカストマシン用射
出スリーブ。8. The injection sleeve for a die casting machine according to claim 7, wherein a nitriding layer is formed on an inner peripheral surface.
以下、Ｍｎ：１ｗｔ％以下、Ｎｉ：２ｗｔ％以上８ｗｔ
％以下、Ｃｒ：１４ｗｔ％以上２０ｗｔ％以下、Ｃｕ：
６ｗｔ％以下、Ｎｂ＋Ａｌ：０．１ｗｔ％以上２ｗｔ％
以下、残部が実質的にＦｅからなる析出硬化系ステンレ
ス鋳鋼で構成され、その内部に熱媒体の流路となる鋼製
の配管が鋳包み法により埋め込まれていることを特徴と
するダイカストマシン用射出スリーブ。9. C: 0.1 wt% or less, Si: 1 wt%
Hereinafter, Mn: 1 wt% or less, Ni: 2 wt% or more and 8 wt%
% Or less, Cr: 14 wt% or more and 20 wt% or less, Cu:
6 wt% or less, Nb + Al: 0.1 wt% or more and 2 wt%
Hereinafter, for a die casting machine, the balance is made of precipitation-hardened stainless cast steel substantially made of Fe, and a steel pipe serving as a flow path of a heat medium is embedded therein by a cast-in method. Injection sleeve.
ことを特徴とする請求項９に記載のダイカストマシン用
射出スリーブ。10. The injection sleeve for a die casting machine according to claim 9, wherein a nitriding layer is formed on an inner peripheral surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000207224A JP2002018566A (en) | 2000-07-07 | 2000-07-07 | Injection sleeve for die casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000207224A JP2002018566A (en) | 2000-07-07 | 2000-07-07 | Injection sleeve for die casting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002018566A true JP2002018566A (en) | 2002-01-22 |
Family
ID=18704023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000207224A Pending JP2002018566A (en) | 2000-07-07 | 2000-07-07 | Injection sleeve for die casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002018566A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013152034A (en) * | 2012-01-24 | 2013-08-08 | Kobelco Contstruction Machinery Ltd | Heat exchanger and method for making the same |
| CN107971472A (en) * | 2018-01-03 | 2018-05-01 | 广东文达镁业科技股份有限公司 | A kind of new cold chamber die-casting machine can heating cylinder |
-
2000
- 2000-07-07 JP JP2000207224A patent/JP2002018566A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013152034A (en) * | 2012-01-24 | 2013-08-08 | Kobelco Contstruction Machinery Ltd | Heat exchanger and method for making the same |
| CN107971472A (en) * | 2018-01-03 | 2018-05-01 | 广东文达镁业科技股份有限公司 | A kind of new cold chamber die-casting machine can heating cylinder |
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