JPH03104840A - Cast iron castings having functionarlly gradient - Google Patents
Cast iron castings having functionarlly gradientInfo
- Publication number
- JPH03104840A JPH03104840A JP1282589A JP1282589A JPH03104840A JP H03104840 A JPH03104840 A JP H03104840A JP 1282589 A JP1282589 A JP 1282589A JP 1282589 A JP1282589 A JP 1282589A JP H03104840 A JPH03104840 A JP H03104840A
- Authority
- JP
- Japan
- Prior art keywords
- cast iron
- molten metal
- pouring
- mold
- die
- 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.)
- Granted
Links
- 238000005266 casting Methods 0.000 title claims abstract description 21
- 229910001018 Cast iron Inorganic materials 0.000 title claims abstract description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 229910007981 Si-Mg Inorganic materials 0.000 claims abstract description 6
- 229910008316 Si—Mg Inorganic materials 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- 238000009750 centrifugal casting Methods 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229910002804 graphite Inorganic materials 0.000 claims description 9
- 239000010439 graphite Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 4
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 2
- 238000013459 approach Methods 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 claims 1
- 239000004576 sand Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 238000000465 moulding Methods 0.000 abstract description 6
- 229910052710 silicon Inorganic materials 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000000463 material Substances 0.000 description 13
- 208000015943 Coeliac disease Diseases 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 229910017818 Cu—Mg Inorganic materials 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 229910018505 Ni—Mg Inorganic materials 0.000 description 1
- 102100024616 Platelet endothelial cell adhesion molecule Human genes 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 furthermore Inorganic materials 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は傾斜的機能を有する鋳鉄鋳物に関するもので、
自動車のエンジン駆動関係に使用される鋳鉄及び鉄系の
部品全般に利用されるものである。[Detailed description of the invention] [Object of the invention] (Industrial application field) The present invention relates to a cast iron casting having a graded function,
It is used for all cast iron and iron-based parts used in automobile engine drives.
（従来の技術）
本発明に係る従来技術としては（１）特開昭６２−１１
０８５４号公報及び（２）特開昭６２＝１９２２５０号
公報がある。(Prior art) As the prior art related to the present invention, (1) Japanese Patent Application Laid-open No. 62-11
There are No. 0854 and (2) Japanese Unexamined Patent Publication No. 192250.
前記従来技術は第６図に示すように、ブレーキのロータ
に於いて軸心より離れた周辺部にあるディスク状の摺動
部１１を鋳造材のハイダンピングＦＣ（ＦＣＨＤ）によ
り形成し、軸心に近いハブ部ｌ２を強靭なＦＣＤまたは
ＣＶにより形或し前記摺動部とハブ部とはやや立ちあが
った連結部１３により連結一体形成されたブレーキロー
タで１４は放熱孔、１５は軸孔、Ａは前記ＦＣＨＤとＦ
ＣＤとの境界で、この様な複数材料よりなる鋳造品の鋳
造方法及び装置である。As shown in FIG. 6, in the prior art, a disk-shaped sliding portion 11 located at the peripheral portion of a brake rotor away from the axis is formed of high damping FC (FCHD) cast material, and A brake rotor is formed in which the hub part l2 close to the main body is made of strong FCD or CV, and the sliding part and the hub part are connected and integrally formed by a slightly raised connecting part 13, 14 is a heat dissipation hole, 15 is a shaft hole, A is the above FCHD and F
The present invention provides a method and apparatus for casting such a cast product made of multiple materials at the boundary with CD.
この威形装置を第７図に示す。１６は鋳型（上型２０，
下型２１及びロータ１９よりな（２）で垂直な軸心１７
を中心に回転軸１８により高速回転する。鋳型ｌ６の停
止中に周辺湯口２２より前記鋳型ｌ６の周辺空隙部２３
内に、先にＦＣＨＤの所定量の注湯を行い、前記周辺空
隙部内のＦＣＨＤの溶湯レベルを一定に保持し、次いで
所定のタイムラグを置いて前記鋳型ｌ６のハブ空隙部２
４内に中央湯口２５及び中央湯道２６よりＦＣＤ又はＣ
Ｖの所定量を連結空間２７をへて注湯し、前記鋳型を高
速回転せしめ、前記ＦＣＨＤとＦＣＤ又はＣＶの両材を
第６図に示す境界面Ａと融合せしめ複数部材を形成し一
体鋳造を行う複数材の回転鋳造法である。This impressive device is shown in Figure 7. 16 is a mold (upper mold 20,
The vertical axis 17 at (2) between the lower die 21 and the rotor 19
It rotates at high speed around the rotating shaft 18. While the mold l6 is stopped, the peripheral gap 23 of the mold l6 is opened from the peripheral sprue 22.
A predetermined amount of FCHD is first poured into the hub cavity 2 of the mold 16 to maintain a constant level of molten FCHD in the peripheral cavity, and then after a predetermined time lag, a predetermined amount of FCHD is poured into the hub cavity 2 of the mold 16.
FCD or C from central sprue 25 and central sprue 26 within 4
A predetermined amount of V is poured through the connecting space 27, the mold is rotated at high speed, and the FCHD and FCD or CV materials are fused with the interface A shown in FIG. 6 to form a plurality of members and integrally cast. This is a rotary casting method for multiple materials.
（発明が解決しようとする課題）
しかし前記複数材の回転鋳造法は、次の様な問題点があ
る。(Problems to be Solved by the Invention) However, the rotary casting method of multiple materials has the following problems.
（１）一つの製品を作或するにあたり、２度にわたって
注湯作業を行う必要があり、工数が増大する。(1) When producing one product, it is necessary to pour the metal twice, which increases the number of man-hours.
（２）２相境界面を軸心と平行に近い大きな面積を保つ
様にするために、面を垂直に近づけるための複数材の鋳
込時間、タイムラグ、高速回転開始時間、回転数等のコ
ントロールが難しく、各ロフト間の管理が難しい。(2) In order to maintain a large area of the two-phase interface parallel to the axis, control the casting time of multiple materials, time lag, high speed rotation start time, rotation speed, etc. to make the surface close to perpendicular. management between each loft is difficult.
（３）２度目の注湯のタイムラグが長いと境界面におい
ては凝固した外層の内側面には酸化物皮膜が形或される
ことや、外層との境界部に生しる内層の薄い凝固殻（チ
ル層）の存在によって両層間には完全な接合は困難であ
り、タイムラグが短いと外層の凝固があまり進んでいな
い間に内層部を注湯するので、外層部に内層部の戒分が
混入して外層の巾が薄くなる場合があり、層の厚さをコ
ントロールするのが困難である。(3) If the time lag between the second pouring is long, an oxide film may be formed on the inner surface of the solidified outer layer at the interface, and a thin solidified shell of the inner layer may form at the interface with the outer layer. Due to the presence of a (chill layer), it is difficult to completely bond the two layers, and if the time lag is short, the inner layer will be poured while the outer layer has not yet solidified, so the inner layer will not be able to adhere to the outer layer. The width of the outer layer may become thinner due to contamination, making it difficult to control the thickness of the layer.
（４）前記成形装置に使用する鋳型では、周辺湯口等の
存在により、鋳型全体から見て成形回転中のバランスが
とりづらい。(4) In the mold used in the above-mentioned molding apparatus, it is difficult to maintain balance during molding rotation when looking at the mold as a whole due to the presence of peripheral sprues and the like.
（５）鋳型構造が複雑であり、湯まわり不良が部分的に
おきる。(5) The mold structure is complicated, and poor water flow occurs in some parts.
本発明は傾斜的機能を有する鋳鉄鋳物に於いて、多段階
（２度以上）に分けて注湯することなく、一度の注湯で
かつ必要な部分のみが強度、硬度、耐摩耗性に優れた鋳
鉄鋳物を得ることを技術的課題とするものである。The present invention enables cast iron castings with graded functions to be poured at once without having to be poured in multiple stages (more than once), and only the necessary parts have excellent strength, hardness, and wear resistance. The technical challenge is to obtain cast iron castings with high quality.
（課題を解決するための手段）
前記課題を解決するために講じた技術的手段は次のよう
である。すなわち、
（１）Ｆｅ−Ｓｉ −Ｍｇ系などの球状化処理剤を使用
して０． ２〜０．８ｗｔ％で、かつ適正の粒系である
５〜５０にメッシュに調整したものを、金型温度１０
０〜５００℃に予熱した金型及び砂型などの遠心鋳造用
の成形用金型に、特に強度、耐摩耗性等の強度を付与し
たい部位に、あらかしめ前記処理をセットした後に、Ｆ
Ｃ溶湯を１３５０〜１５５０℃の注湯温度に上げたもの
を遠心力ＧＴｈＯ〜１０００になるまで回転が上がった
鋳型中に所定量注湯し、軸心より離れた周辺部を球状黒
鉛鋳鉄（ＦＣＤ）により形成し、軸心に近づくつれてＣ
Ｖ黒鉛鋳鉄、更にねずみ鋳鉄（Ｆ Ｃ）と傾斜的な組織
変化が得られる鋳鉄鋳物、又は、（２）金型温度を１０
０〜５００℃に予熱し遠心力ＧＩ１ｈＯ−１ ０ ０
０になるまで回転が上がった鋳型中に、ＦＣ溶湯を注湯
温度■３５０〜１５５０℃に上げたものを所定量注湯す
る場合に、機能を必要とする部分にＦｅ−Ｓｉ −Ｍｇ
系の球状化処理剤を０．２〜０．８ｗｔ％で、かつ粒径
が ５〜５０に調整したものを溶湯に沿って添加し、機
能が必要な部分のみをＦＣＤ材とし、その周辺よりＣＶ
材更にＦＣ材に傾斜的な組織変化が得られる鋳鉄鋳物で
ある。(Means for solving the problem) The technical means taken to solve the above problem are as follows. That is, (1) using a spheroidizing treatment agent such as Fe-Si-Mg system, 2 to 0.8 wt% and an appropriate particle system, adjusted to a mesh of 5 to 50, at a mold temperature of 10
F
A predetermined amount of C molten metal heated to a pouring temperature of 1,350 to 1,550°C is poured into a mold whose rotation is increased until the centrifugal force GThO ~ 1,000, and the peripheral part away from the axis is filled with spheroidal graphite cast iron (FCD ), and as it approaches the axis, C
V-graphite cast iron, furthermore, gray cast iron (FC) and cast iron castings that can obtain a gradient structure change, or (2) mold temperature 10
Preheat to 0-500℃ and apply centrifugal force GI1hO-1 0 0
When pouring a predetermined amount of FC molten metal at a temperature of 350 to 1550℃ into a mold whose rotation has increased to 0, Fe-Si-Mg is added to the parts that require functionality.
A spheroidizing agent of 0.2 to 0.8 wt% and adjusted to a particle size of 5 to 50 is added along the molten metal, and only the parts that require functionality are made into FCD material, and from the surrounding area CV
It is a cast iron casting that can obtain a gradient structure change in the FC material.
（作用）
鋳鉄組織形態に於いて、黒鉛形態はＦＣＤが球状であり
ＦＣが片状で、ＣｖはＦＣＤとＦＣの中間の所謂いもむ
し状である。（第５図に示す）鋳鉄中に現れる黒鉛の形
状は一般に球状から片状まで極めて多岐にわたっており
、ＦＣはスタンダードな特性を持ち、ＦＣＤは強度、伸
び、硬度ともＦＣに比べ大幅にアップしている。(Function) In the structure of cast iron, graphite has a spherical FCD, a flaky FC, and a so-called caterpillar-like Cv between FCD and FC. (As shown in Figure 5) The shapes of graphite that appear in cast iron generally vary widely from spherical to flaky, and FC has standard characteristics, while FCD has significantly improved strength, elongation, and hardness compared to FC. There is.
第１表はＦＣＤ，ＣＶ，ＦＣの特性比較表である。Table 1 is a comparison table of characteristics of FCD, CV, and FC.
第１表よりＦＣＤは引張強さ、硬さとも優れている、尚
、前記ＦＣＨＤはＦＣとほぼ同じ材料である。As shown in Table 1, FCD is excellent in both tensile strength and hardness. Furthermore, the above-mentioned FCHD is almost the same material as FC.
黒鉛の球状化処理についてはＦＣ材の化学組織として高
炭素、高ケイ素のものが望ましく溶湯（ＦＣ材）の基地
組織をコントロールするには、Ｃ，Ｓｉ量は勿論のこと
、Ｍｎ．Ｎｉ，Ｃｕなどの元素も必要であるが、球状化
処理剤としては純Ｍｇ，Ｎｉ−Ｍｇ．Ｃｕ−Ｍｇ合金等
があり、主流としてはＦｅ−Ｓｉ−Ｍｇ合金（＋αとし
て希土類金属）のＭｇが４〜６％程度で、前記元湯に対
して１４５０℃以上の出湯温度で、前記処理剤と含浸反
応させることで黒鉛を球状化し、鋳造歩留りを良くする
ものである。Regarding the spheroidization treatment of graphite, it is desirable that the chemical structure of the FC material is high in carbon and high in silicon.In order to control the matrix structure of the molten metal (FC material), the amount of C and Si, as well as the amount of Mn. Although elements such as Ni and Cu are also required, pure Mg, Ni-Mg. There are Cu-Mg alloys, etc., and the mainstream is Fe-Si-Mg alloy (rare earth metal as +α) with a Mg content of about 4 to 6%. By impregnating the graphite with the carbon dioxide, the graphite is spheroidized and the casting yield is improved.
次に鋳造金型のギャビテイ内側に前記処理剤を配置し、
型内に注湯後遠心鋳造を行った場合、鋳型が高速回転中
に軸心部から溶湯（ＦＣ材〉が流し込まれ、遠心力によ
り溶湯が強い圧力（Ｇ）により処理材部に浸入し、溶湯
との反応が起こり、球状化処理が始まるが、部分的にし
か処理が行われない量であることと、遠心成形中に凝固
がおこり、処理反応が途中で終わるために、最外周部か
ら軸心にかけてＦＣＤ−ＣＶ−ＦＣの状態に傾斜的に変
化した組織となるものである。Next, the processing agent is placed inside the gap of the casting mold,
When centrifugal casting is performed after pouring the metal into the mold, the molten metal (FC material) is poured from the shaft center while the mold is rotating at high speed, and the molten metal enters the treated material part due to strong pressure (G) due to centrifugal force. A reaction occurs with the molten metal and the spheroidization process begins, but the amount is only partially processed, and coagulation occurs during centrifugal molding and the processing reaction ends midway, so the spheroidization process starts from the outermost part. This is a tissue that gradually changes to the FCD-CV-FC state toward the axis.
この様な方法により外周部が強く、硬く、内周部にゆく
に従って柔らかい特性を有する製品を１つの鋳型で、か
つ１度注湯、回転により威形できるものである。By this method, a product that is strong and hard at the outer periphery and softer toward the inner periphery can be produced in one mold by pouring and rotating the mold once.
（実施例） 以下実施例により説明する。(Example) This will be explained below using examples.
第ｌ図のＰは円盤形状の自動車部品で、第２図は成形装
置である。P in FIG. 1 is a disc-shaped automobile part, and FIG. 2 is a molding device.
１は上型、２は下型で、３は上型締部で、４はロー夕、
５は回転軸で、Ｐは前記円盤状の製品で７は後述の処理
剤で８は湯口であり、１０は全体の鋳型を示す。1 is the upper mold, 2 is the lower mold, 3 is the upper mold clamping part, 4 is the rotor,
5 is a rotating shaft, P is the disk-shaped product, 7 is a treatment agent to be described later, 8 is a sprue, and 10 is the entire mold.
前記鋳造装置に於いてその鋳造方法を述べれば、鋳造型
１０は予め、球状化処理材として３５メッシュのＦｅ−
Ｓｉ−Ｍｇ処理剤を７に示し、下型２の内側面の位置に
０．５ｗｔ％となる様にいれ、杓３００℃に予熱した後
、Ｃ〜３．５、Ｓｉ〜２．４Ｍｎ〜０。３、Ｐ−０．０
４、Ｓ〜０．０１８各一ｔ％のｍ或の１４００℃の溶湯
を回転軸５を中心に高速回転（キャビテイ最外周で５０
０Ｇ）させた鋳型１０に湯口８より鋳込むもので、第２
図の一点鎖線９は溶湯の回転中状況で、湯口の寸法はａ
≦ｂが好ましい。To describe the casting method in the casting apparatus, the casting mold 10 is made of 35 mesh Fe-
The Si-Mg treatment agent shown in 7 was poured into the inner surface of the lower mold 2 at a concentration of 0.5 wt%, and after preheating the ladle to 300°C, C ~ 3.5, Si ~ 2.4 Mn ~ 0 .3, P-0.0
4. S ~ 0.018 molten metal of 1 t% each at 1400℃ is rotated at high speed around the rotating shaft 5 (50℃ at the outermost circumference of the cavity)
0G) is poured into the mold 10 from the sprue 8
The dashed line 9 in the figure shows the situation when the molten metal is rotating, and the size of the sprue is a.
≦b is preferred.
前記方法にて得られた製品の組織図を第４図及び第５図
に示す。The organization chart of the product obtained by the above method is shown in FIGS. 4 and 5.
製品Ｐの黒鉛のｍ織は外周部（Ａ）、中央部（Ｂ）内周
部（Ｃ）に示すように外周から内側に配列し、第５図は
その拡大図である。第５図の組織図より３０は粒状のＦ
ＣＤ３１はいもむし状のＣＶ１３２は片状のＦＣで本実
施例ではその割合が約３０％づつの分布状況であった。The graphite m weave of product P is arranged from the outer circumference to the inside as shown in the outer circumference (A), the center (B), and the inner circumference (C), and FIG. 5 is an enlarged view thereof. From the organization chart in Figure 5, 30 is a granular F.
CD31 and caterpillar-like CV132 are flaky FC, and in this example, the distribution was about 30%.
又硬さについては第３図に示すように外周が硬＜ （
ＦＣＤ）内周に向かって次第に柔らか＜ （ＣＶ−Ｆ
Ｃ）なる傾斜的な特性をもつもので、グラフ中、長さで
約９０ｍの位置が製品の回転中心線（６）である。Regarding the hardness, as shown in Figure 3, the outer periphery is hard < (
FCD) Gradually softer towards the inner circumference (CV-F
C) has a sloped characteristic, and the position at a length of about 90 m in the graph is the rotation center line (6) of the product.
本発明は次の効果を有する。すなわち、（１）必要な部
分のみに強度、硬度、耐摩耗性などを付与することが可
能であり、
（２）多段階（２度以上）に分けて注湯するのではなく
、１度だけの注湯作業で必要な所に機能が付与でき、工
程短縮及び溶湯の管理が容易である。The present invention has the following effects. In other words, (1) it is possible to add strength, hardness, wear resistance, etc. only to the necessary areas, and (2) it is possible to pour the metal only once instead of pouring in multiple stages (more than once). Functions can be added where needed during the pouring process, shortening the process and making it easy to manage the molten metal.
（３〉境界をはつきりさせずに必要な所に機能を付与す
ることができるので、従来技術のような境界部の接合不
良とか、熱膨張率の相違による内部残留応力による割れ
の発生といった接合境界での欠陥の要因をなくすること
ができる。(3) Functions can be added where necessary without sharpening the boundaries, so there are no problems such as poor bonding at the boundaries or cracks caused by internal residual stress due to differences in thermal expansion coefficients, as in conventional technology. The cause of defects at the bonding boundary can be eliminated.
（４）部分的にＦＣＤ化することで、従来の全体をＦＣ
Ｄ化するよりも、かなりのコスト低減ができる。(4) By partially converting to FCD, the entire conventional system becomes FC
Compared to converting to D, costs can be reduced considerably.
（５）処理剤との反応中に遠心力も働いているため、処
理時に発生するガスが遠心力により鋳物外へ容易に排出
され、かつ緻密で健全な鋳物が製造できるものである。(5) Since centrifugal force is also acting during the reaction with the treatment agent, the gas generated during treatment is easily discharged from the casting due to the centrifugal force, and dense and sound castings can be manufactured.
第１図は製品の断面図、第２図は本実施例の成形装置の
断面図、第３図は製品の回転中心より外周部の硬度の分
布状況の説明図、第４図は製品の黒鉛の組織図、第５図
は第４図の拡大図、第６図は従来例の説明図、第７図は
従来例の鋳造装置の説明図である。
５・・・回転軸，
６・・・回転中心．
７・・・球状処理剤
８・・・湯口，
１０・・・鋳型．
Ｐ・・・製品，
３０・・・ＦＣＤ
３１・・・ＣＶ．
３２・・・ＦＣ，Figure 1 is a cross-sectional view of the product, Figure 2 is a cross-sectional view of the molding device of this example, Figure 3 is an explanatory diagram of the hardness distribution from the center of rotation to the outer periphery of the product, and Figure 4 is the graphite of the product. FIG. 5 is an enlarged view of FIG. 4, FIG. 6 is an explanatory diagram of a conventional example, and FIG. 7 is an explanatory diagram of a conventional casting apparatus. 5...Rotation axis, 6...Rotation center. 7... Spherical treatment agent 8... Sprue, 10... Mold. P...Product, 30...FCD 31...CV. 32...FC,
Claims (2)
て０．２〜０．８ｗｔ％で、かつ適正の粒径である５〜
５０メッシュに調整したものを金型温度１００〜５００
℃に予熱した金型及び砂型などの遠心鋳造用の成形金型
に、特に強度、耐摩耗性等の特性を付与したい部位に、
あらかじめ前記球状化処理剤をセットした後に、ＦＣ溶
湯を１３５０〜１５５０℃の注湯温度にし、遠心力ＧＮ
ｏ．０〜１０００になるまで回転が上がつた鋳型中に所
定量注湯し、回転軸心より離れた周辺部を球状黒鉛鋳鉄
（ＦＣＤ）により形成し、軸心に近づくにつれてＣＶ黒
鉛鋳鉄、更にねずみ鋳鉄（ＦＣ）と傾斜的な組織変化を
有する鋳鉄鋳物。(1) Using a spheroidizing agent such as Fe-Si-Mg, the amount is 0.2-0.8 wt% and the appropriate particle size is 5-5.
Adjusted to 50 mesh, mold temperature 100-500
For centrifugal casting molds such as molds and sand molds that have been preheated to ℃, it can be applied to areas where properties such as strength and abrasion resistance are desired to be imparted.
After setting the spheroidizing agent in advance, the FC molten metal is heated to a pouring temperature of 1350 to 1550°C, and the centrifugal force GN
o. A predetermined amount of molten metal is poured into a mold whose rotation has increased from 0 to 1000°C, and the peripheral part away from the rotational axis is formed of spheroidal graphite cast iron (FCD), and as it approaches the axis, CV graphite cast iron is formed, and then gray A cast iron casting with a gradient structure change compared to cast iron (FC).
Ｎｏ．０〜１０００になるまで回転が上がつた鋳型中に
、ＦＣ溶湯を注湯温度１３５０〜１５５０℃にて注湯す
る場合に、鋳物製品の機能を必要とする部分にＦｅ−Ｓ
ｉ−Ｍｇ系の球状化処理剤を０．２〜０．８ｍｔ％で、
かつ粒径が５〜５０のメッシュに調整したものを溶湯に
沿つて添加し、鋳造製品において機能が必要な部分のみ
をＦＣＤとし、その周辺よりＣＶ、更にＦＣと傾斜的な
組織変化を有する鋳鉄鋳物。(2) Preheat the mold temperature to 100 to 500℃, and centrifugal force G
No. When pouring FC molten metal at a pouring temperature of 1350 to 1550°C into a mold whose rotation has increased to 0 to 1000°C, Fe-S is added to the parts of the cast product that require functionality.
i-Mg-based spheroidizing agent at 0.2 to 0.8 mt%,
The particles adjusted to a mesh size of 5 to 50 are added along the molten metal, and only the parts that require function in the cast product are made into FCD, and the cast iron has a gradient structure change from the surrounding area to CV and then FC. casting.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1012825A JPH0759732B2 (en) | 1989-01-20 | 1989-01-20 | Method for producing cast iron casting having a graded structure |
| US07/909,659 US5316068A (en) | 1989-01-20 | 1992-07-07 | Method for producing casting with functional gradient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1012825A JPH0759732B2 (en) | 1989-01-20 | 1989-01-20 | Method for producing cast iron casting having a graded structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03104840A true JPH03104840A (en) | 1991-05-01 |
| JPH0759732B2 JPH0759732B2 (en) | 1995-06-28 |
Family
ID=11816162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1012825A Expired - Fee Related JPH0759732B2 (en) | 1989-01-20 | 1989-01-20 | Method for producing cast iron casting having a graded structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0759732B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1097766A1 (en) * | 1999-11-05 | 2001-05-09 | W.C. Heraeus GmbH & Co. KG | Tubular sputtering target |
| KR100682627B1 (en) * | 2005-11-08 | 2007-02-15 | (주)미정금속 | Centrifugal casting device |
| CN104959572A (en) * | 2015-06-17 | 2015-10-07 | 陈文建 | Forging method of aluminum alloy |
| CN114101619A (en) * | 2021-11-30 | 2022-03-01 | 国铭铸管股份有限公司 | Centrifugal casting process of nodular cast pipe |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61201754A (en) * | 1985-03-05 | 1986-09-06 | Yanmar Diesel Engine Co Ltd | Sleeveless cylinder block |
-
1989
- 1989-01-20 JP JP1012825A patent/JPH0759732B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61201754A (en) * | 1985-03-05 | 1986-09-06 | Yanmar Diesel Engine Co Ltd | Sleeveless cylinder block |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1097766A1 (en) * | 1999-11-05 | 2001-05-09 | W.C. Heraeus GmbH & Co. KG | Tubular sputtering target |
| US6793784B1 (en) | 1999-11-05 | 2004-09-21 | W. C. Heraeus Gmbh & Co. Kg | Tube target |
| KR100682627B1 (en) * | 2005-11-08 | 2007-02-15 | (주)미정금속 | Centrifugal casting device |
| CN104959572A (en) * | 2015-06-17 | 2015-10-07 | 陈文建 | Forging method of aluminum alloy |
| CN114101619A (en) * | 2021-11-30 | 2022-03-01 | 国铭铸管股份有限公司 | Centrifugal casting process of nodular cast pipe |
| CN114101619B (en) * | 2021-11-30 | 2023-08-08 | 国铭铸管股份有限公司 | Centrifugal casting process of spheroidal graphite cast tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0759732B2 (en) | 1995-06-28 |
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