JPH09141409A - Metallic mold for centrifugal casting - Google Patents
Metallic mold for centrifugal castingInfo
- Publication number
- JPH09141409A JPH09141409A JP29638695A JP29638695A JPH09141409A JP H09141409 A JPH09141409 A JP H09141409A JP 29638695 A JP29638695 A JP 29638695A JP 29638695 A JP29638695 A JP 29638695A JP H09141409 A JPH09141409 A JP H09141409A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- casting
- mold body
- centrifugal casting
- metallic mold
- 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
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、内部に溶湯を鋳込
んで鋳造管を形成するための遠心鋳造用金型に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a centrifugal casting mold for casting a molten metal inside to form a casting pipe.
【0002】[0002]
【従来の技術】従来、上記の遠心鋳造用金型は、鋳込み
部分の肉厚が長さ方向に一定に形成されており、同温度
における該金型からの外部への熱放出、及び、鋳込み金
属からの該金型への熱吸収が、該金型の全長に亘って略
等しいものであった。2. Description of the Related Art Conventionally, the above-mentioned centrifugal casting mold has a casting portion whose wall thickness is constant in the lengthwise direction, and at the same temperature, heat is released from the casting mold to the outside and casting is performed. The heat absorption from the metal to the mold was approximately equal over the entire length of the mold.
【0003】[0003]
【発明が解決しようとする課題】上記従来の遠心鋳造用
金型においては、金型の端部においては、金型端部の開
口部からの放熱により、鋳込み金属の放熱に差が生じる
結果、金型端部の鋳込み金属の温度低下が早くなり、内
部より温度が低くなる結果、金型の中央部寄りに最終凝
固位置が移動し、引け巣、不純物の偏析等の欠陥部がこ
の最終凝固位置に集中する傾向があり、こうした欠陥部
を削除するためには、鋳造管の全長に亘って内面切削を
必要とし、余肉を大きく取った鋳造を必要としていたと
同時に、欠陥部の深さが異状に深くなった場合には、不
良品の発生を誘起するという問題があった。この問題を
解決するために、図5(イ)に示すように、金型の鋳込
側の鋳型面を拡径し、鋳込んだ鋳造管8の鋳込側に厚肉
部8aを形成させ、この部分にできる湯溜まりを最終凝
固部9とさせ、その部分の深さに相当する鋳造管の内面
を、図5(ロ)に示す一点鎖線の位置迄削除して欠陥部
を除去するとともに、前記拡径部の外面を削除すること
が行われているが、削除部分が多く、材料の無駄が多
い。そこで、本発明の目的は、上記の問題点を解決し、
欠陥部を鋳造品の端部に積極的に形成させることによっ
て、その端部のみを切除することで、材料の無駄を省
き、同時に、安定した品質の遠心鋳造品の供給を可能と
する遠心鋳造用金型を提供するところにある。DISCLOSURE OF THE INVENTION In the above-mentioned conventional centrifugal casting mold, at the end of the mold, heat is dissipated from the opening of the end of the mold, which results in a difference in heat dissipation of the cast metal. As the temperature of the cast metal at the end of the mold decreases faster and the temperature becomes lower than the inside, the final solidification position moves toward the center of the mold, and defects such as shrinkage cavities and segregation of impurities are generated in this final solidification. There is a tendency to concentrate on the position, and in order to remove such defects, it was necessary to cut the inner surface over the entire length of the casting pipe, casting with a large excess of thickness, and at the same time the depth of the defects However, there is a problem in that the occurrence of defective products is induced when the depth becomes abnormally deep. In order to solve this problem, as shown in FIG. 5 (a), the diameter of the casting surface of the die on the casting side is expanded, and a thick wall portion 8a is formed on the casting side of the cast casting pipe 8. The molten metal pool formed in this portion is used as the final solidification portion 9, and the inner surface of the casting pipe corresponding to the depth of that portion is deleted to the position of the one-dot chain line shown in FIG. 5B to remove the defective portion. Although the outer surface of the expanded diameter portion has been removed, there are many removed portions and much material is wasted. Therefore, an object of the present invention is to solve the above problems,
Centrifugal casting enables the defective parts to be positively formed at the ends of the cast product, cutting out only that end, thereby eliminating waste of material and at the same time enabling stable quality centrifugal cast products to be supplied. It is in the place of providing molds.
【0004】[0004]
【課題を解決するための手段】上記の目的のための本発
明の特徴構成は、筒状の金型本体の肉厚を、前記金型本
体の一端部側から他端部側にかけて次第に厚くなるよう
に変化させてある(請求項1に対応)点にある。このよ
うに、金型の肉厚を変化させることにより、金型内に溶
湯を鋳込んだ際の金型の吸熱量に、金型の長手方向に位
置的な変化をもたせることができ、金型本体の一端部側
から他端部側にかけて吸熱量が次第に大きくなるように
することができる。従って、前記金型本体内に溶湯を鋳
込んだ場合には、鋳込金属の冷却速度を前記一端部側よ
りも前記他端部側が大きくなるようにすることができ、
る。このため、前記一端部側から溶湯を前記金型本体内
に鋳込んだ場合には、本来、前記一端部側から前記他端
部側にかけて次第に低くなる鋳込金属の温度勾配を、さ
らに拡大して、鋳込金属の凝固方向を前記他端部側から
前記一端部側に偏ったものにすることができる。こうし
て指向性凝固をさせる結果、鋳造品の肉厚を変化させる
こと無く、最終凝固位置を前記一端部に極在させるよう
にすることができ、前記欠陥部を前記一端部に積極的に
形成させることができるので、前記一端部を切除するこ
とによって、鋳造管の健全部のみを残すことができる。
従って、鋳造品の欠陥除去のための内面切削は不要にな
り、鋳造品の加工量は極めて少なくできると同時に、切
除量も極めて少なくて済むので、材料の無駄も省くこと
ができる。尚、前記金型本体の肉厚を、前記金型本体の
長さ方向に直線的に変化させるように構成(請求項2に
対応)してもよく、このようにすれば、金型本体を単純
な形状にできるとともに、前記冷却速度をなだらかに変
化させ、鋳込金属になだらかな温度勾配を与えることが
できる。その結果、鋳込金属の凝固方向をほぼ揃えるこ
とができ、確実に最終凝固位置を前記一端部に極在させ
ることができる。従って、切除部分を短くできる。ま
た、前記金型本体の外面を回転放物面を以て形成するこ
と(請求項3に対応)も好ましく、このようにすれば、
金型本体の輪切り断面積が、その長手方向に一定の変化
を示すので、前記冷却速度、従って、鋳込金属の温度勾
配をほぼ一定にすることができる。その結果、指向性凝
固をさせつつ、ほぼ均質な鋳造管の製造が可能になる。
そして、前記金型本体に、空隙を保って外筒を外嵌して
(請求項4に対応)あればなお好ましい。このようにす
れば、金型のバランスを保ちやすくなり、さらに、従来
の遠心鋳造装置に改造を施すこと無く本発明を実施する
ことができる。さらに、前記空隙を、前記一端部側から
前記他端部側にかけて次第に狭くなるように変化させて
構成(請求項5に対応)してもよく、このようにすれ
ば、前記空隙の断熱効果に、前記一端部側から前記他端
部側にかけて次第に小さくなる勾配をもたせることがで
き、溶湯を金型本体に鋳込んだ際の、金型本体の長手方
向での吸熱量の変化を持たせることができる。その結
果、金型本体の一端部と他端部との外径差を大きくする
ことなく、上記の効果を得ることができる。また、前記
空隙を、前記金型本体の長さ方向に直線的に変化させて
構成(請求項6に対応)してもよく、このようにすれ
ば、単純な形状の金型本体と組み合わせて、簡単な形状
の外筒とで上記の効果が得られる。その結果、金型のバ
ランスをさらに良好にでき、簡単な構造で所期の指向性
凝固をさせた鋳造管を得ることができる。さらに、前記
金型本体の前記一端部を、砂型で形成する(請求項7に
対応)ことはさらに好ましい。このようにすれば、鋳込
金属に管軸方向への指向性ももった凝固をさせたうえ
に、砂型で形成した前記一端部に湯溜まりを形成するこ
とができ、前記一端部に更に確実に不純物を捕捉するこ
とができる。その結果、上記各効果に加えて、鋳造管の
材質の向上を図ることができるという、更なる効果がも
たらされる。The feature of the present invention for the above object is that the wall thickness of the cylindrical mold body gradually increases from one end side to the other end side of the mold body. Is changed (corresponding to claim 1). In this way, by changing the wall thickness of the mold, the heat absorption amount of the mold when the molten metal is cast into the mold can be positionally changed in the longitudinal direction of the mold. The heat absorption amount can be gradually increased from one end side to the other end side of the mold body. Therefore, when the molten metal is cast into the mold body, the cooling rate of the cast metal can be made larger on the other end side than on the one end side,
You. Therefore, when the molten metal is cast into the mold body from the one end side, the temperature gradient of the cast metal, which is gradually lowered from the one end side to the other end side, is further expanded. Thus, the solidification direction of the cast metal can be biased from the other end side to the one end side. As a result of directional solidification in this way, the final solidification position can be localized at the one end without changing the thickness of the cast product, and the defective portion is positively formed at the one end. Therefore, by cutting off the one end, only the sound part of the casting pipe can be left.
Therefore, the inner surface cutting for removing the defects of the cast product is not necessary, and the processing amount of the cast product can be extremely small, and at the same time, the cutting amount can be extremely small, so that the waste of the material can be omitted. The wall thickness of the mold body may be linearly changed in the lengthwise direction of the mold body (corresponding to claim 2). In addition to the simple shape, the cooling rate can be gently changed to give the cast metal a gentle temperature gradient. As a result, the solidification directions of the cast metal can be substantially aligned, and the final solidification position can be surely localized at the one end. Therefore, the excised portion can be shortened. Further, it is also preferable to form the outer surface of the mold body with a paraboloid of revolution (corresponding to claim 3).
Since the cross-section area of the die body exhibits a constant change in its longitudinal direction, the cooling rate, and hence the temperature gradient of the cast metal, can be made substantially constant. As a result, it is possible to manufacture a substantially homogeneous cast pipe while allowing directional solidification.
Further, it is more preferable that the outer cylinder is externally fitted (corresponding to claim 4) to the mold body while keeping a space. By doing so, it becomes easier to maintain the balance of the mold, and the present invention can be carried out without modifying the conventional centrifugal casting apparatus. Further, the gap may be configured so as to be gradually narrowed from the one end side to the other end side (corresponding to claim 5), and in this case, the heat insulating effect of the gap is obtained. It is possible to have a gradient that gradually decreases from the one end side to the other end side, and to have a change in heat absorption amount in the longitudinal direction of the mold body when the molten metal is cast into the mold body. You can As a result, the above effect can be obtained without increasing the difference in outer diameter between the one end and the other end of the mold body. In addition, the void may be configured to linearly change in the length direction of the mold body (corresponding to claim 6), and in this case, it can be combined with a mold body having a simple shape. The above effect can be obtained with an outer cylinder having a simple shape. As a result, it is possible to further improve the balance of the molds, and it is possible to obtain a casting pipe that has the desired directional solidification with a simple structure. Furthermore, it is more preferable that the one end of the mold body is formed by a sand mold (corresponding to claim 7). By doing so, it is possible to solidify the cast metal also with directivity in the pipe axis direction, and to form a molten metal pool at the one end formed by the sand mold, and further secure at the one end. Impurities can be captured. As a result, in addition to the above respective effects, a further effect that the material of the cast pipe can be improved is brought about.
【0005】[0005]
【発明の実施の形態】本発明の一実施形態について、図
面に即して以下に説明する。図1は本発明の金型の縦断
面図を示す。金型は、外筒2と、その外筒2に空隙Gを
保って内嵌する金型本体1とで形成されており、前記金
型本体1の内周面の両端部には、中央部が円形に開口し
た円盤状の堰4が設けられている。前記外筒2は、通常
の金型の内面を、一端側を小径に、他端側を大径にした
テーパ面に加工したものであり、通常の金型と同様の外
周面形状を有しており、その外周に平行した拡径部3を
備えている。この拡径部3は金型使用時に回転駆動台に
の支持駆動ローラーに接し、回転支持されるものであ
る。前記金型本体1は、筒状の内周面が鋳型面を形成
し、外周面は、一端部1a側を小径に、他端部1b側を
大径にしたテーパ面に形成されており、両端部外周面
を、環状の断熱結合片5を介在させて、前記外筒2に、
前記外筒2の他端側に前記他端部1bを一致させるよう
にして内嵌固定してある。前記金型本体1は、前記外筒
2よりも長さを短く形成してあり、前記金型本体1の前
記一端部1aから前記外筒2の一端にかけて、前記筒状
の内周面に連続する鋳型面を形成する砂型Sが形成され
ている。この砂型Sは、前記金型本体1の前記一端部1
aの短縮された部分に替えて形成されたものである。前
記金型本体1の内径、即ち、鋳型面の内径は400mm
であり、前記金型本体1の前記一端部1aの肉厚を30
mmとし、前記他端部1bの肉厚を70mmとするた
め、前記一端部1aの外径は460mm、前記他端部1
bの外径は540mmとしてある。そして、前記外筒2
の外径は600mm、一端側の内径は470mm、他端
側の内径は545mmにしてある。従って、前記空隙G
の幅は、前記他端部1b側が2.5mmであり、前記一
端部1a側が5mmであり、前記空隙Gの幅は、前記一
端部1a側が前記他端部1b側よりも大きく形成されて
いる。この金型を用いて鋳造した結果、内面は非常にな
めらかな性状となり、肉厚方向の内面の不純物層も肉厚
に対し、通常の方向では8%程度あるのに対し、6%程
度におさえることができた。また、最終凝固層は前記砂
型Sの部分で生成していたが、鋳造結晶の方向も前記金
型本体1の他端部1b側から前記一端部1aの方に向け
て傾斜はわからなかった。尚、鋳造条件は、重量は肉厚
が30mmになるように決め、材質は低炭素鋼で鋳造時
の溶鋼温度は1600℃とした。前記空隙Gの幅を、最
小2.5mmとしたのは、熱膨張代と伝熱境界層の厚さ
より厚くしたものであり、前記空隙Gの幅と、前記空隙
Gの伝熱係数の関係を把握しやすくするためのものであ
り、これ以下の空隙厚さでも空隙の効果は得られる。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a vertical sectional view of a mold of the present invention. The mold is composed of an outer cylinder 2 and a mold body 1 which is fitted in the outer cylinder 2 with a gap G therebetween. The inner peripheral surface of the mold body 1 has a central portion at both ends. A disc-shaped weir 4 having a circular opening is provided. The outer cylinder 2 is formed by processing the inner surface of a normal die into a tapered surface with one end having a small diameter and the other end having a large diameter, and has the same outer peripheral surface shape as a normal die. And has a diameter-expanded portion 3 parallel to the outer circumference thereof. The expanded diameter portion 3 is in contact with a support driving roller of the rotary drive table and is rotationally supported when the die is used. The mold body 1 has a cylindrical inner peripheral surface forming a mold surface, and an outer peripheral surface formed into a tapered surface having a small diameter on one end 1a side and a large diameter on the other end 1b side, The outer peripheral surfaces of both ends are joined to the outer cylinder 2 with the annular heat insulating coupling piece 5 interposed.
The other end portion 1b is fitted and fixed to the other end side of the outer cylinder 2 so as to coincide with the other end portion 1b. The mold body 1 is formed to have a length shorter than that of the outer cylinder 2, and extends from the one end portion 1 a of the mold body 1 to one end of the outer cylinder 2 and is continuous with the inner peripheral surface of the cylindrical shape. A sand mold S that forms the mold surface is formed. This sand mold S is the one end portion 1 of the mold body 1.
It is formed in place of the shortened portion of a. The inner diameter of the mold body 1, that is, the inner diameter of the mold surface is 400 mm.
And the wall thickness of the one end 1a of the mold body 1 is 30
mm and the thickness of the other end 1b is 70 mm, the outer diameter of the one end 1a is 460 mm, and the other end 1 is
The outer diameter of b is 540 mm. And the outer cylinder 2
Has an outer diameter of 600 mm, an inner diameter on one end side of 470 mm, and an inner diameter on the other end side of 545 mm. Therefore, the gap G
Is 2.5 mm on the side of the other end 1b and 5 mm on the side of the one end 1a, and the width of the gap G is larger on the side of the one end 1a than on the side of the other end 1b. . As a result of casting using this mold, the inner surface has a very smooth property, and the impurity layer on the inner surface in the thickness direction is about 8% of the wall thickness in the normal direction, while it is about 6%. I was able to. Although the final solidified layer was formed in the sand mold S, the inclination of the casting crystal was not known from the other end 1b side of the mold body 1 toward the one end 1a. The casting conditions were determined such that the weight was 30 mm in wall thickness, the material was low carbon steel, and the molten steel temperature during casting was 1600 ° C. The minimum width of the gap G is 2.5 mm because it is thicker than the thermal expansion margin and the thickness of the heat transfer boundary layer. The relation between the width of the gap G and the heat transfer coefficient of the gap G is shown in FIG. This is for easy understanding, and the void effect can be obtained even with a void thickness less than this.
【0006】次に、他の発明の実施の形態について説明
する。 〈1〉前記金型本体の外面を、図4に示すように、回転
放物面を以て形成することも効果的である。この形状
は、金型本体の長手方向の吸熱量の分布を、直線的に、
且つ、前記金型本体の一端部側から前記他端部側にかけ
て、順次増大させることができる。さらに、前記金型本
体の吸熱量の分布を非直線的にする場合には、それに合
わせた外面形状を設計すればよい。 〈2〉先に実施の形態では、前記金型本体の一端側を砂
型に置き換えたが、全長を金型本体で形成してもよく、
外筒とのあいだの空隙を充分に取れば、ほぼ同様の結果
が得られる。尚、図3に示すように、空隙は均一であっ
ても同様の効果を得ることができる。 〈3〉先の実施の形態では、外筒を設けたが、金型本体
に前記拡径部と同様に、回転支持機構に合わせた部分を
設けてあればよい。この場合、拡径部3の吸熱の増大を
妨げるために、周方向に連続した空隙から成る保温部A
を設けると指向性凝固を起こさせるのに効果的である。
尚、外筒は、金型の長手方向の重量配分をほぼ均一化す
るのに効果的である。Next, another embodiment of the invention will be described. <1> It is also effective to form the outer surface of the mold body with a paraboloid of revolution as shown in FIG. This shape is a linear distribution of the heat absorption of the mold body in the longitudinal direction.
In addition, it is possible to increase sequentially from one end side of the mold body to the other end side. Further, when the distribution of the heat absorption amount of the mold body is made non-linear, the outer surface shape may be designed in accordance with the distribution. <2> In the above embodiment, one end side of the mold body was replaced with a sand mold, but the entire length may be formed by the mold body,
If a sufficient space is provided between the outer cylinder and the outer cylinder, almost the same result can be obtained. As shown in FIG. 3, the same effect can be obtained even if the voids are uniform. <3> In the previous embodiment, the outer cylinder is provided, but the mold body may be provided with a portion adapted to the rotation support mechanism as in the expanded diameter portion. In this case, in order to prevent an increase in heat absorption of the expanded diameter portion 3, the heat retaining portion A composed of a void continuous in the circumferential direction.
Is effective in causing directional solidification.
The outer cylinder is effective for making the weight distribution of the mold in the longitudinal direction substantially uniform.
【0007】[0007]
【発明の効果】以上の結果、本発明によって、材料の無
駄を省きながら、安定した品質の遠心鋳造品の供給が可
能になった。As a result of the above, according to the present invention, it is possible to supply a centrifugally cast product of stable quality while eliminating waste of material.
【0008】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。[0008] In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.
【図1】本発明の遠心鋳造金型の一実施形態を説明する
概略縦断面図FIG. 1 is a schematic vertical sectional view illustrating an embodiment of a centrifugal casting mold of the present invention.
【図2】本発明の遠心鋳造金型の他の実施形態を説明す
る概略縦断面図FIG. 2 is a schematic vertical sectional view for explaining another embodiment of the centrifugal casting mold of the present invention.
【図3】本発明の遠心鋳造金型の他の実施形態を説明す
る概略縦断面図FIG. 3 is a schematic vertical sectional view for explaining another embodiment of the centrifugal casting mold of the present invention.
【図4】本発明の遠心鋳造金型の他の実施形態を説明す
る概略縦断面図FIG. 4 is a schematic vertical sectional view for explaining another embodiment of the centrifugal casting mold of the present invention.
【図5】従来の遠心鋳造金型の説明用概略縦断面図FIG. 5 is a schematic vertical sectional view for explaining a conventional centrifugal casting mold.
1 金型本体 1a 金型本体の一端部 1b 金型本体の他端部 2 外筒 G 空隙 S 砂型 1 Mold Main Body 1a One End of Mold Main Body 1b Other End of Mold Main Body 2 Outer Cylinder G Gap S Sand Mold
Claims (7)
ための遠心鋳造用金型であって、 筒状の金型本体(1)の肉厚を、前記金型本体(1)の
一端部(1a)側から他端部(1b)側にかけて次第に
厚くなるように変化させてある遠心鋳造用金型。1. A centrifugal casting mold for casting a molten metal inside to form a casting pipe, wherein the wall thickness of a cylindrical mold body (1) is the same as that of the mold body (1). A centrifugal casting mold in which the thickness gradually changes from the one end (1a) side to the other end (1b) side.
本体(1)の長さ方向に直線的に変化させてある請求項
1記載の遠心鋳造用金型。2. The mold for centrifugal casting according to claim 1, wherein the wall thickness of the mold body (1) is changed linearly in the length direction of the mold body (1).
を以て形成してある請求項1記載の遠心鋳造用金型。3. The mold for centrifugal casting according to claim 1, wherein the outer surface of the mold body (1) is formed with a paraboloid of revolution.
本体(1)に、空隙(G)を保って外筒(2)を外嵌し
てある遠心鋳造用金型。4. A mold for centrifugal casting, wherein an outer cylinder (2) is fitted onto the mold body (1) according to any one of claims 1 to 3 while keeping a gap (G).
側から前記他端部(1b)側にかけて次第に狭くなるよ
うに変化させてある請求項4記載の遠心鋳造用金型。5. The end portion (1a) is defined by the gap (G).
The centrifugal casting mold according to claim 4, wherein the mold is changed so as to become gradually narrower from the side to the other end (1b) side.
の長さ方向に直線的に変化させてある請求項5記載の遠
心鋳造用金型。6. The mold body (1) is provided with the gap (G).
The centrifugal casting mold according to claim 5, wherein the mold is linearly changed in the length direction.
a)を、砂型(S)で形成してある請求項4〜6の何れ
かに記載の遠心鋳造用金型。7. The one end (1) of the mold body (1)
The centrifugal casting mold according to any one of claims 4 to 6, wherein a) is formed by a sand mold (S).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29638695A JPH09141409A (en) | 1995-11-15 | 1995-11-15 | Metallic mold for centrifugal casting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29638695A JPH09141409A (en) | 1995-11-15 | 1995-11-15 | Metallic mold for centrifugal casting |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH09141409A true JPH09141409A (en) | 1997-06-03 |
Family
ID=17832883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP29638695A Pending JPH09141409A (en) | 1995-11-15 | 1995-11-15 | Metallic mold for centrifugal casting |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH09141409A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017507028A (en) * | 2014-01-31 | 2017-03-16 | サフラン・エアクラフト・エンジンズ | Lined centrifugal casting mold |
CN107088651A (en) * | 2017-07-10 | 2017-08-25 | 太极重工股份有限公司 | Multiple-piece centrifugal casting flange mould |
CN107716888A (en) * | 2017-10-25 | 2018-02-23 | 四川共享铸造有限公司 | A kind of centre spinning method of cylinder jacket |
-
1995
- 1995-11-15 JP JP29638695A patent/JPH09141409A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2017507028A (en) * | 2014-01-31 | 2017-03-16 | サフラン・エアクラフト・エンジンズ | Lined centrifugal casting mold |
CN107088651A (en) * | 2017-07-10 | 2017-08-25 | 太极重工股份有限公司 | Multiple-piece centrifugal casting flange mould |
CN107716888A (en) * | 2017-10-25 | 2018-02-23 | 四川共享铸造有限公司 | A kind of centre spinning method of cylinder jacket |
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