JP2002275588A - Wear resistant and corrosion resistant alloy and cylinder for molding machine - Google Patents
Wear resistant and corrosion resistant alloy and cylinder for molding machineInfo
- Publication number
- JP2002275588A JP2002275588A JP2001078803A JP2001078803A JP2002275588A JP 2002275588 A JP2002275588 A JP 2002275588A JP 2001078803 A JP2001078803 A JP 2001078803A JP 2001078803 A JP2001078803 A JP 2001078803A JP 2002275588 A JP2002275588 A JP 2002275588A
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- Japan
- Prior art keywords
- resistant
- corrosion
- wear
- alloy
- cylinder
- Prior art date
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- Injection Moulding Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、耐摩耗性と耐食性
に優れた被覆用のＦｅ基合金と、このＦｅ基合金を合金
鋼からなるシリンダ母材の内面に被覆させた成形機用シ
リンダに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an Fe-based alloy for coating having excellent wear resistance and corrosion resistance, and a cylinder for a molding machine in which the Fe-based alloy is coated on the inner surface of a cylinder base material made of alloy steel. Things.
【０００２】[0002]
【従来の技術】プラスチックや金属粉末などの射出成形
機または押出成形機には円筒状の成形機用シリンダが用
いられている。この成形機用シリンダの内面は、成形中
の樹脂あるいはそれに含有される補強剤、添加剤によっ
て摩耗しやすい。また、樹脂や添加剤から発生するハロ
ゲンガスなどによって腐食しやすい。そこで、これらを
防ぐために従来より耐摩耗性と耐食性に優れた材料をシ
リンダ母材の内面に被覆して被覆層を形成することが行
われている。この被覆層は、例えば遠心力鋳造法によっ
て内張りしたり、ＨＩＰ法によって拡散接合して形成す
る。2. Description of the Related Art A cylindrical molding machine cylinder is used for an injection molding machine or an extrusion molding machine for plastics or metal powder. The inner surface of the molding machine cylinder is liable to be worn by the resin being molded or the reinforcing agents and additives contained therein. Further, it is easily corroded by a halogen gas generated from a resin or an additive. Therefore, in order to prevent such a problem, a material having excellent wear resistance and corrosion resistance has conventionally been applied to the inner surface of the cylinder base material to form a coating layer. This coating layer is formed by, for example, lining by centrifugal casting or diffusion bonding by HIP.
【０００３】この種の従来の被覆層を形成する被覆材と
しては、Ｎｉ基合金、Ｃｏ基合金、Ｎｉ−Ｃｏ基合金な
どが挙げられる。これらの合金は耐食性に優れ、耐摩耗
性は比較的良好であるが、Ｃｏ、Ｍｏなどの高価な金属
を多く含有しているのでシリンダの製造コストが高くな
る問題がある。そこで、比較的安価な被覆材としてＦｅ
基合金があるが、初晶部がパーライトを主体とする組織
で硬さが低いため初晶部が優先的に摩耗脱落し、耐摩耗
性に劣るという問題がある。さらに、Ｆｅ基合金は、Ｎ
ｉ基合金、Ｃｏ基合金、Ｎｉ−Ｃｏ基合金に比べ耐食性
が劣るという問題がある。[0003] As a coating material for forming this kind of conventional coating layer, a Ni-based alloy, a Co-based alloy, a Ni-Co-based alloy and the like can be mentioned. These alloys are excellent in corrosion resistance and relatively good in wear resistance, but have a problem that the production cost of the cylinder becomes high because they contain many expensive metals such as Co and Mo. Therefore, as a relatively inexpensive coating material, Fe
Although there is a base alloy, there is a problem in that the primary crystal part is preferentially worn off due to a structure mainly composed of pearlite and has low hardness, resulting in poor wear resistance. Furthermore, Fe-based alloys
There is a problem that corrosion resistance is inferior to i-base alloys, Co-base alloys, and Ni-Co-base alloys.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上記の問題
に鑑みて、従来のＦｅ基合金より優れた耐摩耗性および
耐食性を有する安価なＦｅ基の耐摩耗耐食合金を提供す
ることを課題とする。また、本発明の合金をシリンダ母
材の内面に遠心力鋳造法やＨＩＰ法などにより被覆させ
た成形機用シリンダを提供することを課題とする。SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an inexpensive Fe-based wear-resistant and corrosion-resistant alloy having better wear resistance and corrosion resistance than conventional Fe-based alloys. And Another object of the present invention is to provide a molding machine cylinder in which the alloy of the present invention is coated on the inner surface of a cylinder base material by a centrifugal casting method, a HIP method, or the like.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
め、本発明者は各種Ｆｅ基耐摩耗耐食合金について鋭意
検討した結果、特定の成分範囲、特にＣｕを添加するこ
とにより耐食性を向上させ、従来初晶部がパーライトを
主体とする組織であったものを、初晶部をマルテンサイ
ト主体とすることにより耐摩耗性を向上できることを見
いだし本発明に至った。Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have conducted intensive studies on various Fe-based wear-resistant corrosion-resistant alloys. As a result, by adding a specific component range, particularly Cu, the corrosion resistance was improved. The present inventors have found that the wear resistance can be improved by making the primary crystal part mainly composed of martensite, whereas the primary crystal part has a structure mainly composed of pearlite.
【０００６】すなわち、本発明の耐摩耗耐食合金は、重
量％で、Ｃ：１．０〜３．０％、Ｓｉ：０．１〜４．０
％、Ｍｎ：０．１〜２．０％、Ｎｉ：２．０〜７．０
％、Ｂ：１．０〜４．０％、Ｃｕ：０．１〜７．０％を
含み残部実質的にＦｅおよび不可避的不純物からなるこ
とを特徴とする。That is, in the wear-resistant and corrosion-resistant alloy of the present invention, C: 1.0 to 3.0% and Si: 0.1 to 4.0% by weight.
%, Mn: 0.1 to 2.0%, Ni: 2.0 to 7.0
%, B: 1.0 to 4.0%, and Cu: 0.1 to 7.0%, and the balance is substantially composed of Fe and unavoidable impurities.
【０００７】また、前記本発明の耐摩耗耐食合金は、金
属組織がマルテンサイトを主体とする初晶部と、炭化物
と基地組織を主体とする共晶部との混合組織からなるこ
とを特徴とする。前記基地組織が、マルテンサイトを主
体とすることを特徴とする。前記初晶部を構成するマル
テンサイトおよび基地組織を構成するマルテンサイトの
硬さが５８ＨＲＣ以上であることを特徴とする。前記炭
化物の硬さが７０ＨＲＣ以上であることを特徴とする。
前記共晶部が金属組織中に５０面積％以上占めることを
特徴とする。The wear-resistant and corrosion-resistant alloy according to the present invention is characterized in that the metal structure is composed of a mixed structure of a primary crystal part mainly composed of martensite and a eutectic part mainly composed of carbide and a base structure. I do. The base organization is mainly composed of martensite. The hardness of the martensite constituting the primary crystal part and the martensite constituting the base structure is not less than 58 HRC. The hardness of the carbide is 70 HRC or more.
The eutectic portion occupies 50% by area or more in the metal structure.
【０００８】さらに、本発明の成形機用シリンダは、合
金鋼からなるシリンダ母材の内面に上記本発明の耐摩耗
耐食合金を被覆させたことを特徴とする。Further, a cylinder for a molding machine according to the present invention is characterized in that an inner surface of a cylinder base material made of alloy steel is coated with the wear-resistant and corrosion-resistant alloy according to the present invention.
【０００９】[0009]
【作用】本発明の耐摩耗耐食合金について説明する。本
発明に係わるＦｅ基合金は、Ｃ、Ｓｉ、Ｍｎ、Ｎｉ、
Ｂ、Ｃｕの特定量を含有させたものである。以下に、そ
れぞれの含有成分の限定理由を述べる。以下、含有量を
表す％は重量％を示す。The wear and corrosion resistant alloy of the present invention will be described. The Fe-based alloy according to the present invention includes C, Si, Mn, Ni,
It contains a specific amount of B or Cu. The reasons for limiting the respective components will be described below. Hereinafter,% representing the content indicates% by weight.
【００１０】Ｃは、Ｂ、Ｎｉ等と結合して硬質の複合炭
硼化物を形成し、合金の硬さを向上させる元素である。
１．０％未満であると、硬さが不足し耐摩耗性が低下す
る。３．０％を超えると合金強度が低下する。従って、
その含有量は１．０〜３．０％とした。より好ましいＣ
含有量は、１．０〜２．５％である。[0010] C is an element that combines with B, Ni, etc. to form a hard composite boride and improves the hardness of the alloy.
If it is less than 1.0%, the hardness is insufficient and the wear resistance is reduced. If it exceeds 3.0%, the alloy strength decreases. Therefore,
The content was set to 1.0 to 3.0%. More preferred C
The content is 1.0 to 2.5%.
【００１１】Ｓｉは、遠心力鋳造法により被覆させる場
合、被覆材溶湯の脱酸性および流動性を向上させる。
０．１％未満ではその効果が十分に得られない。４．０
％を超えると、被覆層の硬さが高くなりすぎて脆化し、
後工程の機械加工や使用時において、シリンダの被覆層
に割れや剥離が発生しやすくなる。従って、その含有量
は０．１〜４．０％とした。より好ましいＳｉ含有量
は、０．５〜３．０％である。When Si is coated by a centrifugal casting method, Si improves the deacidification and fluidity of the molten coating material.
If it is less than 0.1%, the effect cannot be sufficiently obtained. 4.0
%, The hardness of the coating layer becomes too high and becomes brittle,
During machining or use in a later step, the coating layer of the cylinder is liable to crack or peel. Therefore, the content is set to 0.1 to 4.0%. A more preferred Si content is 0.5 to 3.0%.
【００１２】Ｍｎは、Ｓｉと同じく脱酸材の作用をする
とともに、不純物として混入したＳによる悪影響を防止
する。その効果からＭｎの含有量は０．１〜２．０％と
した。より好ましいＭｎ含有量は、０．５〜１．５％で
ある。Mn acts as a deoxidizer similarly to Si, and also prevents the adverse effect of S mixed as an impurity. From the effect, the content of Mn was set to 0.1 to 2.0%. A more preferred Mn content is 0.5 to 1.5%.
【００１３】Ｎｉは、硬さを高めるとともに耐食性も向
上させる効果を有する。２．０％未満ではその効果が十
分でない。７．０％を超えると、靭性が低下する。従っ
て、その含有量は２．０〜７．０％とした。より好まし
いＮｉ含有量は、２．５〜５．５％である。Ni has the effect of increasing hardness and corrosion resistance. If it is less than 2.0%, the effect is not sufficient. If it exceeds 7.0%, the toughness decreases. Therefore, the content was set to 2.0 to 7.0%. A more preferred Ni content is 2.5 to 5.5%.
【００１４】Ｂは、Ｃと結合して硬質の複合炭硼化物を
形成し、被覆層の硬さと耐摩耗性を上げる効果がある重
要な元素である。１．０％未満ではその効果が十分でな
い。４．０％を超えると硬くなりすぎて脆くなる。従っ
て、その含有量は１．０〜４．０％とした。より好まし
いＢ含有量は、２．０〜３．５％である。B is an important element that combines with C to form a hard composite boride and has the effect of increasing the hardness and wear resistance of the coating layer. If it is less than 1.0%, the effect is not sufficient. If it exceeds 4.0%, it becomes too hard and brittle. Therefore, the content was set to 1.0 to 4.0%. A more preferable B content is 2.0 to 3.5%.
【００１５】Ｃｕは、本発明の最も特徴とする添加元素
であり耐食性を格段に向上させる。また、基地中に固溶
して被覆層の強度を高める。０．１％未満では、耐食性
にあまり寄与せず、７．０％を超えると被覆層が脆化す
る。従って、その含有量は０．１〜７．０％とした。よ
り好ましいＣｕ含有量は、０．５〜５．０％である。[0015] Cu is the most characteristic additive element of the present invention and significantly improves corrosion resistance. Further, it forms a solid solution in the matrix to increase the strength of the coating layer. If it is less than 0.1%, it does not contribute much to corrosion resistance, and if it exceeds 7.0%, the coating layer becomes brittle. Therefore, the content is set to 0.1 to 7.0%. A more preferred Cu content is 0.5 to 5.0%.
【００１６】本発明に係わるＦｅ基合金は、上記元素以
外にＣｒ、Ｍｏ、Ｖ、Ｃｏを含有させてもよい。Ｃｒ
は、ＣやＢと結合して複炭化物、複硼化物を形成し、硬
さを高め、耐摩耗性および耐食性を著しく向上させる。
そのためには１．０％以上は必要であるが、Ｃｒ含有量
の増加やＣ、Ｂの含有に伴い被覆層が脆化するので２０
％を上限とした。従って、その含有量は１．０〜２０％
とした。より好ましいＣｒ含有量は、５．０〜１０％で
ある。The Fe-based alloy according to the present invention may contain Cr, Mo, V, and Co in addition to the above elements. Cr
Combines with C and B to form double carbides and double borides, increases hardness, and significantly improves wear resistance and corrosion resistance.
For this purpose, 1.0% or more is necessary. However, since the coating layer becomes brittle with an increase in the Cr content and the content of C and B, the content is 20% or more.
% As the upper limit. Therefore, its content is 1.0-20%
And A more preferable Cr content is 5.0 to 10%.
【００１７】Ｍｏは、炭化物を形成し耐摩耗性を向上さ
せる。また、基地中に固溶させ、耐食性を向上させるた
めに添加する。１．０％未満ではその効果が十分でな
い。７．０％を超えると靭性が低下する。従って、その
含有量は１．０〜７．０％とした。より好ましいＭｏ含
有量は、１．０〜５．０％である。Mo forms carbides and improves wear resistance. Further, it is dissolved in a matrix and added to improve corrosion resistance. If it is less than 1.0%, the effect is not sufficient. If it exceeds 7.0%, the toughness decreases. Therefore, the content was set to 1.0 to 7.0%. A more preferable Mo content is 1.0 to 5.0%.
【００１８】Ｖは、硬質の炭化物を形成し、耐摩耗性向
上に寄与する。Ｃ量および他の炭化物生成元素とのバラ
ンスから下限を０．０１％とした。３．０％を超えると
靭性が低下する。従って、その含有量は０．０１〜３．
０％とした。より好ましいＶ含有量は、０．１〜１．０
％である。V forms a hard carbide and contributes to improvement of wear resistance. The lower limit was made 0.01% from the balance between the C content and other carbide-forming elements. If it exceeds 3.0%, the toughness decreases. Therefore, the content is 0.01-3.
0%. More preferable V content is 0.1 to 1.0.
%.
【００１９】Ｃｏは、基地に固溶して耐食性を向上させ
る。また、高温強度を向上させる効果がある。Ｃｏは、
高価であるため使用量の少ない方がよい。これらを考慮
して、その含有量は０．０１〜２．０％とした。より好
ましいＣｏ含有量は、０．０５〜１．０％である。Co is dissolved in the matrix to improve the corrosion resistance. Further, there is an effect of improving high-temperature strength. Co is
Since it is expensive, it is better to use less. In consideration of these, the content is set to 0.01 to 2.0%. A more preferred Co content is 0.05 to 1.0%.
【００２０】以上、本発明の合金の各添加元素について
説明したが、その利用にあたっては板材、棒材などの溶
製材として、また粉末冶金法による合金粉末としてその
他各種態様で使用できる。Although the respective elements added to the alloy according to the present invention have been described above, they can be used in various other forms as ingots such as plates and bars, and as alloy powders by powder metallurgy.
【００２１】[0021]
【発明の実施の形態】次に、本発明の耐摩耗耐食合金お
よび成形機用シリンダの具体的実施例について説明す
る。本発明例の耐摩耗耐食合金（本発明材No.１〜２）
の化学成分を表１に示す。これらの耐摩耗耐食合金から
なる溶湯を、円筒状の鋼製母材の内側に注湯し、母材の
両端の開口部に蓋をして、遠心鋳造機に載せ回転させ
た。その後、Ｓ４５Ｃ製母材の内面に被覆用合金が被覆
されたシリンダの温度が約５００℃まで冷却した後、遠
心鋳造機の回転を停止し空冷して作製した。Next, specific examples of the wear-resistant and corrosion-resistant alloy and the cylinder for a molding machine according to the present invention will be described. Wear-resistant and corrosion-resistant alloy of the present invention (materials of the present invention No. 1-2)
Is shown in Table 1. The molten metal made of these wear-resistant and corrosion-resistant alloys was poured into the inside of a cylindrical steel base material, and the openings at both ends of the base material were covered, placed on a centrifugal casting machine and rotated. Thereafter, after the temperature of the cylinder in which the coating alloy was coated on the inner surface of the base material made of S45C was cooled to about 500 ° C., the rotation of the centrifugal casting machine was stopped and air-cooled.
【００２２】 表１ 化学成分（重量％） Ｎｏ． Ｃ Ｓｉ Ｍｎ Ｎｉ Ｂ Ｃｕ Ｆｅ １ １．６ １．８ ０．３ ３．０ ２．３ １．０ Ｂａｌ ２ ２．３ １．０ １．０ ３．５ １．２ ５．０ ＢａｌTable 1 Chemical components (% by weight) C Si Mn Ni B Cu Fe 1 1.6 1.8 0.3 3.0 2.3 1.0 Bal 2 2.3 1.0 1.0 3.5 1.2 5.0 Bal
【００２３】このようにして得られたシリンダの被覆層
から各種試験片を切り出して、抗折強度（ＭＰａ）と硬
さ（ＨＲＣ）の測定を行った。これらの結果を表２に示
す。Various test pieces were cut out from the coating layer of the cylinder thus obtained, and the bending strength (MPa) and hardness (HRC) were measured. Table 2 shows the results.
【００２４】 [0024]
【００２５】また、得られたシリンダの被覆層から各種
試験片を切り出して、１８％塩酸水溶液に２４時間浸漬
させて、浸漬前後の重量の減少量を測定して耐食性を評
価した。その結果、従来Ｆｅ基合金に比べて本発明材N
o.１は６分の１、本発明材No.２は１０分の１の減少量
となり、耐食性の向上が確認できた。Further, various test pieces were cut out from the obtained coating layer of the cylinder, immersed in an 18% hydrochloric acid aqueous solution for 24 hours, and the amount of weight loss before and after immersion was measured to evaluate the corrosion resistance. As a result, compared to the conventional Fe-based alloy,
In the case of o.1, the amount was reduced by 1/6, and in the case of the present invention material No. 2, the amount was reduced by 1/10, and it was confirmed that the corrosion resistance was improved.
【００２６】本発明材No.１〜２の抗折強度は、従来被
覆材であるＮｉ基合金、Ｃｏ基合金などの抗折強度５７
０〜７００と同等であったが、硬さは従来被覆材である
Ｎｉ基合金、Ｃｏ基合金などの硬さＨＲＣ５３に比べ
１．２倍も高いものが得られた。また、本発明材No.１
〜２の組織は、従来のＦｅ基合金に見られたパーライト
組織がなく、耐摩耗性の向上に有効なマルテンサイトを
主体とする初晶部と、炭化物と基地組織を主体とする共
晶部との混合組織からなっていた。本発明材No.１〜２
の被覆層を形成した成形機用シリンダを用いて、ＰＰ樹
脂にグラスファイバー３５％を調整した強化樹脂の成形
機に適用した結果、１２ヶ月間連続運転したが、被覆層
に腐食、摩耗などは殆ど生じず、耐用寿命が向上したこ
とを確認できた。The transverse rupture strengths of the materials Nos. 1 and 2 of the present invention are as high as those of conventional coating materials such as Ni-based alloys and Co-based alloys.
The hardness was equivalent to 0 to 700, but the hardness was 1.2 times higher than the hardness HRC53 of the conventional coating materials such as Ni-based alloy and Co-based alloy. In addition, the present invention material No. 1
The structures of Nos. 1 to 2 have no pearlite structure found in the conventional Fe-based alloy, and have a primary crystal part mainly composed of martensite and effective in improving wear resistance, and a eutectic part mainly composed of carbide and a base structure. And consisted of a mixed tissue. Invention material No. 1-2
As a result of applying to a reinforced resin molding machine in which 35% of glass fiber was adjusted to PP resin using a molding machine cylinder having a coating layer formed thereon, continuous operation was performed for 12 months. It hardly occurred, and it was confirmed that the service life was improved.
【００２７】[0027]
【発明の効果】本発明の合金は、従来のＦｅ基合金より
耐摩耗性および耐食性に優れ、安価なＦｅ基合金を用い
るのでシリンダの製造コストを低減できる。The alloy according to the present invention is superior in wear resistance and corrosion resistance to the conventional Fe-based alloy, and uses a cheap Fe-based alloy, so that the manufacturing cost of the cylinder can be reduced.
Claims (7)
ｉ：０．１〜４．０％、Ｍｎ：０．１〜２．０％、Ｎ
ｉ：２．０〜７．０％、Ｂ：１．０〜４．０％、Ｃｕ：
０．１〜７．０％を含み残部実質的にＦｅおよび不可避
的不純物からなることを特徴とする耐摩耗耐食合金。C. 1.0 to 3.0% by weight, S
i: 0.1 to 4.0%, Mn: 0.1 to 2.0%, N
i: 2.0 to 7.0%, B: 1.0 to 4.0%, Cu:
A wear-resistant and corrosion-resistant alloy containing 0.1 to 7.0% and the balance substantially consisting of Fe and unavoidable impurities.
る初晶部と、炭化物と基地組織を主体とする共晶部との
混合組織からなることを特徴とする請求項１に記載の耐
摩耗耐食合金。2. The wear resistance according to claim 1, wherein the metal structure comprises a mixed structure of a primary crystal part mainly composed of martensite and a eutectic part mainly composed of carbide and a base structure. Corrosion resistant alloy.
とすることを特徴とする請求項２に記載の耐摩耗耐食合
金。3. The wear-resistant and corrosion-resistant alloy according to claim 2, wherein the base structure is mainly composed of martensite.
よび基地組織を構成するマルテンサイトの硬さが５８Ｈ
ＲＣ以上であることを特徴とする請求項２または３に記
載の耐摩耗耐食合金。4. The hardness of martensite forming the primary crystal part and martensite forming a matrix structure is 58H.
The wear-resistant and corrosion-resistant alloy according to claim 2, wherein the alloy is at least RC.
ることを特徴とする請求項２に記載の耐摩耗耐食合金。5. The wear-resistant and corrosion-resistant alloy according to claim 2, wherein the hardness of the carbide is 70 HRC or more.
上占めることを特徴とする請求項２に記載の耐摩耗耐食
合金。6. The wear-resistant and corrosion-resistant alloy according to claim 2, wherein the eutectic portion accounts for 50% by area or more in the metal structure.
耐食合金を、合金鋼からなるシリンダ母材の内面に被覆
させたことを特徴とする成形機用シリンダ。7. A cylinder for a molding machine, wherein the wear-resistant and corrosion-resistant alloy according to claim 1 is coated on the inner surface of a cylinder base material made of alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001078803A JP2002275588A (en) | 2001-03-19 | 2001-03-19 | Wear resistant and corrosion resistant alloy and cylinder for molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001078803A JP2002275588A (en) | 2001-03-19 | 2001-03-19 | Wear resistant and corrosion resistant alloy and cylinder for molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002275588A true JP2002275588A (en) | 2002-09-25 |
Family
ID=18935365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001078803A Pending JP2002275588A (en) | 2001-03-19 | 2001-03-19 | Wear resistant and corrosion resistant alloy and cylinder for molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002275588A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006289772A (en) * | 2005-04-11 | 2006-10-26 | Hitachi Metals Ltd | Composite cylinder for molding machine |
| JP2006315357A (en) * | 2005-05-16 | 2006-11-24 | Hitachi Metals Ltd | Combined cylinder for molding machine |
| CN106011650A (en) * | 2016-08-03 | 2016-10-12 | 苏州市虎丘区浒墅关弹簧厂 | Fatigue resistant spring material |
| CN116770181A (en) * | 2023-06-25 | 2023-09-19 | 张家口万邦锻造有限公司 | Low-alloy high-wear-resistance lining plate and preparation method thereof |
-
2001
- 2001-03-19 JP JP2001078803A patent/JP2002275588A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006289772A (en) * | 2005-04-11 | 2006-10-26 | Hitachi Metals Ltd | Composite cylinder for molding machine |
| JP2006315357A (en) * | 2005-05-16 | 2006-11-24 | Hitachi Metals Ltd | Combined cylinder for molding machine |
| CN106011650A (en) * | 2016-08-03 | 2016-10-12 | 苏州市虎丘区浒墅关弹簧厂 | Fatigue resistant spring material |
| CN116770181A (en) * | 2023-06-25 | 2023-09-19 | 张家口万邦锻造有限公司 | Low-alloy high-wear-resistance lining plate and preparation method thereof |
| CN116770181B (en) * | 2023-06-25 | 2024-01-02 | 张家口万邦锻造有限公司 | Low-alloy high-wear-resistance lining plate and preparation method thereof |
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