JP2574835B2 - Extrusion molding method of rapidly solidified metal powder - Google Patents
Extrusion molding method of rapidly solidified metal powderInfo
- Publication number
- JP2574835B2 JP2574835B2 JP299288A JP299288A JP2574835B2 JP 2574835 B2 JP2574835 B2 JP 2574835B2 JP 299288 A JP299288 A JP 299288A JP 299288 A JP299288 A JP 299288A JP 2574835 B2 JP2574835 B2 JP 2574835B2
- Authority
- JP
- Japan
- Prior art keywords
- molding
- container
- hole
- molded product
- extrusion
- 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.)
- Expired - Lifetime
Links
- 238000001125 extrusion Methods 0.000 title claims description 35
- 239000000843 powder Substances 0.000 title claims description 30
- 229910052751 metal Inorganic materials 0.000 title claims description 17
- 239000002184 metal Substances 0.000 title claims description 17
- 238000000034 method Methods 0.000 title claims description 13
- 238000000465 moulding Methods 0.000 claims description 64
- 239000000463 material Substances 0.000 claims description 21
- 238000010791 quenching Methods 0.000 claims 1
- 230000000171 quenching effect Effects 0.000 claims 1
- 239000000047 product Substances 0.000 description 31
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 210000000078 claw Anatomy 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 238000001513 hot isostatic pressing Methods 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009694 cold isostatic pressing Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000010273 cold forging Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は急冷凝固金属粉末の経済性に優れた成形方法
に関する。Description: TECHNICAL FIELD The present invention relates to a method for forming a rapidly solidified metal powder with excellent economic efficiency.
（従来の技術） 急冷凝固金属粉末は、結晶粒が微細で合金元素も過飽
和に含有させることができるので、例えばアルミニウム
やアルミニウム合金（以下、単にアルミニウムとい
う。）の急冷凝固粉末によって形成された押出材は、溶
製材では具備することができない優れた材質特性を有
し、機械部品等の材料として注目されている。(Prior art) Since the rapidly solidified metal powder has fine crystal grains and can contain alloy elements in a supersaturated state, for example, an extruded material formed by rapidly solidified powder of aluminum or an aluminum alloy (hereinafter simply referred to as aluminum) is used. The material has excellent material characteristics that cannot be provided by a smelting material, and has attracted attention as a material for machine parts and the like.
前記押出材は、通常、急冷凝固金属粉末を冷間静水圧
加圧（CIPという）により等方向に圧縮成形し、この成
形体を封缶脱ガス処理をして熱間静水圧加圧（HIPとい
う）により加圧焼結した後、この焼結体に押出加工を施
して製造していた。The extruded material is usually formed by compressing rapidly solidified metal powder in the same direction by cold isostatic pressing (referred to as CIP), degassing the molded body, and applying hot isostatic pressing (HIP). ), And then extruding this sintered body.
そして、押出材は冷間鍛造や温間鍛造等により製品に
近似した外形を有する成形品に加工成形される。Then, the extruded material is formed into a molded product having an outer shape similar to a product by cold forging, warm forging, or the like.
ところで、急冷凝固金属粉末の焼結体を得るのに、HI
Pのような強力な焼結処理を行うのは次の理由による。
すなわち、急冷凝固金属粉末の表面には酸化物被膜が生
成している。例えば、アルミニウム急冷凝固粉末の場合
では、化学的に安定で緻密なAl2O3被膜が強固に形成さ
れている。従って、かかる急冷凝固金属粉末の焼結体を
得るには、基地が酸化物被膜を介して拡散接合しなけれ
ばならず、強力な焼結処理が必要となるからである。By the way, to obtain a sintered body of rapidly solidified metal powder, HI
The strong sintering process such as P is performed for the following reasons.
That is, an oxide film is formed on the surface of the rapidly solidified metal powder. For example, in the case of an aluminum rapidly solidified powder, a chemically stable and dense Al 2 O 3 coating is firmly formed. Therefore, in order to obtain such a sintered body of the rapidly solidified metal powder, the matrix must be diffusion-bonded via the oxide film, and a strong sintering process is required.
（発明が解決しようとする問題点） しかしながら、上記の成形方法では、成形工程が煩雑
で生産性が悪く、またHIP等を施すために高価な設備を
必要とし、成形品のコスト上昇の要因となっている。(Problems to be Solved by the Invention) However, in the above-mentioned molding method, the molding process is complicated and productivity is low, and expensive equipment is required for performing HIP and the like. Has become.
また、HIP、押出し、場合によっては成形の際に加熱
が繰り返して行われるため、粉末中に析出物や晶出物が
肥大、成長して材質特性が劣化するという欠点があっ
た。In addition, since heating is repeatedly performed during HIP, extrusion, and, in some cases, molding, there is a disadvantage that precipitates and crystallized substances are enlarged and grown in the powder to deteriorate the material properties.
本発明はかかる問題点に鑑みなされたもので、材質特
性の劣化の虞れがなく、しかも低コストで生産性に優れ
た急冷凝固金属粉末の成形方法を提供することを目的と
する。The present invention has been made in view of the above problems, and an object of the present invention is to provide a method of molding a rapidly solidified metal powder which is free from the possibility of deterioration of material properties, is low in cost, and is excellent in productivity.
（問題点を解決するための手段） 上記目的を達成するために講じられた本発明の急冷凝
固金属粉末の成形方法は、まず、コンテナ11の押出方向
前端面に成形金型１を当接させてコンテナ前端面に開口
した押出孔12と成形金型１の当接面に開口した成形孔３
とを連通させ、成形孔３の開口周縁に形成された拡径部
3aと該拡径部3aから下方へ延設された孔型部3bと該孔型
部3bに密接して挿着されたマンドレル７の成形型部８と
によって構成された成形室９にコンテナ11の内部に収容
された急冷凝固粉末を押出して加圧成形する。(Means for Solving the Problems) The method of forming a rapidly solidified metal powder of the present invention taken to achieve the above object is as follows. First, the molding die 1 is brought into contact with the front end face of the container 11 in the extrusion direction. Hole 12 opened on the front end face of the container and molding hole 3 opened on the contact surface of the molding die 1.
And an enlarged portion formed around the opening of the forming hole 3
A container 11 is formed in a molding chamber 9 formed by a molding die 3 of a mandrel 7 closely inserted into the molding die 3b and the molding die 3b extending downward from the enlarged diameter portion 3a. The quenched solidified powder stored in the inside is extruded and pressed.
次に、コンテナ11を押出し方向に対して直角方向に移
動させて押出材を成形孔３の開口面でせん断切断を行
う。Next, the container 11 is moved in a direction perpendicular to the extrusion direction, and the extruded material is subjected to shear cutting at the opening surface of the forming hole 3.
次に、マンドレル７をコンテナ側へ移動して成形孔３
の拡径部3aによって成形された成形品20のフランジ部20
aを成形孔３の開口面より離間させて該フランジ部20aを
抜型治具18によって支持した後、マンドレル７を下降移
動して成形品20と成形型部８との縁を切り、抜型治具18
から成形品20を取出す。上記手段を発明の構成とするも
のである。Next, the mandrel 7 is moved to the container side and the molding hole 3 is moved.
Flange portion 20 of the molded product 20 formed by the enlarged diameter portion 3a
After the flange 20a is separated from the opening surface of the molding hole 3 and the flange portion 20a is supported by the mold removal jig 18, the mandrel 7 is moved down to cut the edge between the molded product 20 and the mold 8 and the mold removal jig. 18
Take out the molded product 20 from The above means constitutes the present invention.
（実施例） まず、図面を参照して、本発明を実施するための装置
の概略について説明する。Embodiment First, an outline of an apparatus for carrying out the present invention will be described with reference to the drawings.
第１図〜第７図に示した押出成形装置は、急冷凝固金
属粉末の圧縮成形体15を収容するコンテナ11と、成形孔
３が上下方向に貫通状に形成された成形金型１と、コン
テナ11内の圧縮成形体15をコンテナ11の下端面に開設さ
れた押出孔12より前記成形孔３に押出するための押出ス
テム17とを備えている。The extrusion molding apparatus shown in FIGS. 1 to 7 comprises a container 11 for accommodating a compression molded body 15 of rapidly solidified metal powder, a molding die 1 in which molding holes 3 are formed in a vertically penetrating manner, An extrusion stem 17 for extruding the compression molded body 15 in the container 11 from the extrusion hole 12 formed in the lower end surface of the container 11 to the molding hole 3 is provided.
前記コンテナ11は、押出孔12の開口端面と成形孔３の
開口端面とが摺動状態で接するように水平方向に移動自
在に支持され、前記両孔12,3が同心状に連通するプレス
中心位置と離反位置との間を移動するための伸縮機構
（例えば、シリンダ）に連結されている。The container 11 is supported movably in the horizontal direction so that the opening end face of the extrusion hole 12 and the opening end face of the forming hole 3 are in sliding contact with each other, and the center of the press where the two holes 12, 3 communicate concentrically. It is connected to a telescopic mechanism (for example, a cylinder) for moving between the position and the separation position.
前記成形金型１は、成形型２が型ホルダ４に嵌着され
て構成され、成形型２に前記成形孔３が開設されてい
る。The molding die 1 is configured by fitting a molding die 2 to a mold holder 4, and the molding hole 2 is formed in the molding die 2.
該成形孔３は、成形型２上面の開口周縁に形成された
拡径部3aと、該拡径部3aの下方に延設された孔型部3bと
からなる。The molding hole 3 includes an enlarged diameter portion 3a formed on the peripheral edge of the opening on the upper surface of the molding die 2, and a molded hole portion 3b extending below the enlarged diameter portion 3a.
前記孔型部3bの下部にはマンドレル７の頭部が密接状
に挿着され、成形孔３の下端開口を閉塞している。前記
マンドレル７の頭部には成形型部８が形成されており、
前記拡径部3a、孔型部3bおよび成形型部８とによって成
形孔３内に成形室９が形成されている。尚、第５図に示
すように、孔型部3Cは拡径部3aからマンドレル７の挿着
部にかけて抜き勾配を有する上抜きテーパ面で形成して
もよい。The head of the mandrel 7 is closely inserted into the lower part of the die part 3b, and closes the lower end opening of the molding hole 3. A molding die 8 is formed on the head of the mandrel 7,
A molding chamber 9 is formed in the molding hole 3 by the enlarged diameter part 3a, the die part 3b and the molding part 8. As shown in FIG. 5, the groove portion 3C may be formed as an upwardly tapered surface having a draft from the enlarged diameter portion 3a to the insertion portion of the mandrel 7.
前記マンドレル７は、成形型部８が孔型部3bの下部に
位置する下限位置と成形孔３外上部位置との間を伸縮手
段によって上下方向移動自在とされている。The mandrel 7 is vertically movable by a telescopic means between a lower limit position where the molding die 8 is located below the die 3b and an upper upper position outside the molding hole 3.
前記コンテナ11が離反位置に移動したとき、成形孔３
の上方には抜型治具18が配設される。該抜型治具18は、
シリンダやばね等の伸縮手段によって、プレス中心軸に
対して対向状態で開閉自在とされた一対の抜型爪19,19
を有している。抜型爪19,19には前記拡径部3aより小径
で孔型部3bより大径とされた半円形の逃し孔19aが形成
されている。抜型爪19,19の開状態においては、抜型爪1
9,19の開き間隔は、第６図に示すように、成形孔３の拡
径部3aによって成形された成形品20のフランジ部20aが
挿通可能とされている。When the container 11 moves to the separated position, the forming hole 3
A jig 18 is disposed above the above. The removal jig 18
A pair of removal claws 19, 19, which can be freely opened and closed in opposition to the center axis of the press by expansion and contraction means such as cylinders and springs.
have. A semicircular relief hole 19a having a diameter smaller than the diameter-enlarged portion 3a and larger than the hole-shaped portion 3b is formed in the removal claws 19,19. In the open state of the removal claws 19, 19, the removal nail 1
As shown in FIG. 6, the opening intervals 9 and 19 allow the flange portion 20a of the molded product 20 formed by the enlarged diameter portion 3a of the forming hole 3 to be inserted.
前記逃し孔は、孔型部3bより大径の弧形で形成しても
よいが、この場合、抜型爪19,19の閉状態における逃し
孔の最大間隔は拡径部3aの直径より小寸とされる。The relief hole may be formed in an arc shape having a larger diameter than the die portion 3b.In this case, the maximum distance between the release holes in the closed state of the extraction claws 19, 19 is smaller than the diameter of the enlarged diameter portion 3a. It is said.
コンテナおよび抜型治具は、具体的には第７図のよう
に設ければよい。すなわち、図示省略のすべり溝によっ
て水平方向に摺動自在に支持された基盤30の一端部にコ
ンテナ11aを配設し、他端部に抜型治具18aが配設されて
いる。コンテナ11aと抜型治具18aの中心間隔は、コンテ
ナ11aがプレス中心位置から離反位置へ移動したとき、
抜型治具18aがプレス中心位置すなわち成形孔３中心位
置となるように設定する。同図において、31は基盤30を
水平移動するためのシリンダピストンロッドであり、ま
た前記コンテナ11aはコンテナ本体32、シリンダライナ3
3、シャーリング34によって構成されている。The container and the jig may be specifically provided as shown in FIG. That is, a container 11a is provided at one end of a base 30 slidably supported in a horizontal direction by a slide groove (not shown), and a removal jig 18a is provided at the other end. The center interval between the container 11a and the removal jig 18a, when the container 11a is moved from the press center position to the separation position,
The removal jig 18a is set at the center of the press, that is, the center of the forming hole 3. In the figure, reference numeral 31 denotes a cylinder piston rod for horizontally moving the base 30, and the container 11a includes a container main body 32 and a cylinder liner 3.
3. It is composed of shirring 34.
上記押出成形装置を用いて本発明方法を実施するに
は、まず、第１図に示したように、コンテナ11をプレス
中心位置として、コンテナ11下面と成形型２上面とを当
接させて型締めし、押出孔12と成形孔３とを連通状態と
する。このとき、成形孔３内のマンドレル７は下限位置
にしておく。In order to carry out the method of the present invention using the above-mentioned extrusion molding apparatus, first, as shown in FIG. The extrusion hole 12 and the molding hole 3 are brought into communication with each other. At this time, the mandrel 7 in the forming hole 3 is kept at the lower limit position.
次に、第２図に示すように、押出ステム17を下降して
押盤13を介してコンテナ11に装填した圧縮成形体15を加
圧し押出孔12から成形孔３に押出す。Next, as shown in FIG. 2, the extrusion stem 17 is lowered, and the compression molded body 15 loaded in the container 11 is pressed through the pusher 13 to be extruded from the extrusion hole 12 into the molding hole 3.
前記成形体15は、一軸圧縮によって成形すればよい。
成形に当っては、相対密度が60〜80％となるように成形
するのがよい。60％未満では粉末の固化が不十分であ
り、取扱いが困難となる。一方、80％を越えると、圧縮
に際し高荷重を要し大形の装置が必要となり、また、成
形に長時間を要する。更に、成形材の内部の空隙部分が
過少になり、押出し時の加熱によっても内部空隙に残存
した水分の除去が困難になり、品質低下を招来する。
尚、圧縮成形は常温下で行えばよく、特に加熱を必要と
しない。The compact 15 may be formed by uniaxial compression.
In forming, it is preferable that the relative density is 60 to 80%. If it is less than 60%, the solidification of the powder is insufficient and handling becomes difficult. On the other hand, if it exceeds 80%, a high load is required for compression, a large-sized apparatus is required, and a long time is required for molding. Further, the void portion inside the molding material becomes too small, and it becomes difficult to remove moisture remaining in the internal void even by heating at the time of extrusion, resulting in quality deterioration.
The compression molding may be performed at room temperature, and does not particularly require heating.
圧縮成形体15を構成する急冷凝固粉末は、押出加工に
より強力なせん断作用を受け、粉末の表面に形成されて
いる酸化物被膜が分断破壊され、また基地中の晶出物や
析出物も微細に分断され、これらが基地中に均一に分散
されて高強度化が図られる。The rapidly solidified powder constituting the compression molded body 15 is subjected to a strong shearing action by the extrusion process, the oxide film formed on the surface of the powder is divided and broken, and crystallized substances and precipitates in the matrix are also fine. And these are evenly dispersed in the base to increase the strength.
アルミニウム急冷凝固粉末の圧縮成形体を用いる場
合、押出比は５〜20とするのがよい。５未満では、Al2O
3被膜等の分断作用が不足し、一方20を越えると押出荷
重が過大となり、工業的生産に適さなくなる。尚、好ま
しくは７〜12の範囲がよい。また、押出温度は250〜450
℃とするのがよい。250℃未満では、急冷凝固粉末の変
形抵抗が大きくなり、大きな押出荷重を必要とし、ま
た、Al2O3被膜の分断破壊後の基地の拡散接合が不十分
となる。一方450℃を越えると、析出物の核の発生や成
長が促進し、粗大析出物が生成し、強度の低下を招来す
る。When using a compression-molded body of the aluminum rapidly solidified powder, the extrusion ratio is preferably 5 to 20. If less than 5, Al 2 O
(3) Insufficient cutting action of the coating and the like, while exceeding 20 makes the extrusion load too large and unsuitable for industrial production. Incidentally, the range of 7 to 12 is preferable. The extrusion temperature is 250-450
℃ is good. If the temperature is less than 250 ° C., the deformation resistance of the rapidly solidified powder becomes large, a large extrusion load is required, and diffusion bonding of the matrix after the fracture of the Al 2 O 3 film becomes insufficient. On the other hand, when the temperature exceeds 450 ° C., generation and growth of precipitate nuclei are promoted, and coarse precipitates are formed, which causes a decrease in strength.
成形孔３に押出された押出材は、マンドレルの成形型
部８に押し当てられ、成形室９を完全に充満する。The extruded material extruded into the molding hole 3 is pressed against the molding die 8 of the mandrel, and completely fills the molding chamber 9.
押出成形完了後、第３図に示すように、押出ステム17
をコンテナ11外部へ上昇させた後、コンテナ11を離反位
置へ移動する。このとき、成形型２の上端面とコンテナ
11の下端面とは当接状態でコンテナ11が水平移動するた
め、両面の境界すなわち成形孔３の開口面で押出材はせ
ん断され、成形室９内にピストン形状の成形品20が残置
される。After the completion of the extrusion, as shown in FIG.
After moving the container 11 to the outside, the container 11 is moved to the separated position. At this time, the upper end face of the mold 2 and the container
Since the container 11 moves horizontally in contact with the lower end surface of the molding 11, the extruded material is sheared at the boundary between both surfaces, that is, at the opening surface of the molding hole 3, and the piston-shaped molded product 20 remains in the molding chamber 9. .
この際、押出材の切断が極めて容易に行われると共
に、切断時に押出成形部分は成形室９内に収容された状
態となっているため、成形品20に変形や損傷が生じにく
い。At this time, the extruded material is extremely easily cut, and since the extruded portion is housed in the molding chamber 9 at the time of cutting, the molded product 20 is not easily deformed or damaged.
コンテナ11を離反位置へ移動した後、抜型爪19,19が
開状態とされた抜型治具18が成形孔３の上部に配設され
る。After the container 11 is moved to the separating position, the removal jig 18 with the removal claws 19, 19 opened is disposed above the forming hole 3.
次に、第４図に示すように、マンドレル７を上昇させ
て、成形品20を成形孔３外方へ突き出す。このとき、成
形品20のフランジ部20a下面が抜型爪19,19の上面上方と
なるようにマンドレル７を上昇させる。次に、抜型爪1
9,19を閉状態とした後、マンドレル７を下限位置に下降
させると、成形品20のフランジ部20a下面は抜型爪19,19
の上面に支持されるので、マンドレル７の頭部に形成さ
れた成形型部８と成形品20との縁（圧接状の密着）が切
れる。抜型爪19,19は閉状態において成形品20を把持し
ないので、成形品20を損傷することなく、抜型治具18か
ら容易に取り出すことができる。Next, as shown in FIG. 4, the mandrel 7 is raised, and the molded product 20 is pushed out of the molding hole 3. At this time, the mandrel 7 is raised so that the lower surface of the flange portion 20a of the molded product 20 is located above the upper surfaces of the ejection claws 19,19. Next, remove the nail 1
After closing the mandrel 7 to the lower limit position after closing the 9, 9 and 19, the lower surface of the flange portion 20a of the molded product 20 will have
The edge (press-contact-like contact) between the molding die 8 formed on the head of the mandrel 7 and the molded product 20 is cut off. Since the removal claws 19, 19 do not grip the molded product 20 in the closed state, the molded product 20 can be easily removed from the removal jig 18 without damaging the molded product 20.
尚、第５図のように、成形孔３の孔型部3Cを下方に縮
径したテーパ面で形成し、押出成形後、マンドレル７を
更に下降することによっても、成形品20と成形型部８と
の縁を切ることができるように考えられる。しかし、通
常、成形中、マンドレル７は成形圧力を担持しなければ
ならず、成形孔３内下限位置でプレスフレーム側に固定
されるため、成形下限位置より下降することができない
のが実情である。As shown in FIG. 5, the mold 3C of the molding hole 3 is formed by a tapered surface with a reduced diameter, and after the extrusion molding, the mandrel 7 is further lowered to form the molded product 20 and the molding die. It is thought that the edge with 8 can be cut. However, usually, during molding, the mandrel 7 must bear the molding pressure, and is fixed to the press frame side at the lower limit position in the forming hole 3, so that it is not possible to descend from the lower limit position. .
成形品20を取り出した後、コンテナ11を中心位置側に
復帰させ、第２図〜第４図の各工程を繰り返すことによ
り、ピストン状の成形品20が連続的に押出成形される。
尚、押出成形された成形品20は、仕上加工時にそのフラ
ンジ部20aも除去される。After the molded product 20 is taken out, the container 11 is returned to the center position side, and the steps in FIGS. 2 to 4 are repeated, whereby the piston-shaped molded product 20 is continuously extruded.
Note that the flange portion 20a of the extruded molded product 20 is also removed at the time of finishing.
ところで、第１図〜第４図では、成形型２上面および
コンテナ11下面を当接し、両者を固定した状態で押出ス
テム17を下降させ、コンテナ11内の圧縮成形体15を成形
金型１の成形室９へ押出し成形したが、これとは逆に、
第８図に示すように、押出ステム17を固定しておき、コ
ンテナ11および成形金型１を押出ステム17側へ一体的に
移動させることにより押出し成形を行ってもよい。1 to 4, the upper surface of the molding die 2 and the lower surface of the container 11 are in contact with each other, and the extrusion stem 17 is lowered in a state where both are fixed. It was extruded into the molding chamber 9, but on the contrary,
As shown in FIG. 8, extrusion molding may be performed by fixing the extrusion stem 17 and moving the container 11 and the molding die 1 integrally to the extrusion stem 17 side.
また、コンテナ11に収容する押出素材としては、圧縮
成形体を必ずしも用いる必要はなく、金属粉末を直に用
いてもよい。この場合、成形室に粉末が入らないよう
に、予めダミー成形品を装着しておき、コンテナ内の粉
末を圧縮成形して固形化した後、ダミー成形品を取り出
せばよい。Further, as the extruded material to be accommodated in the container 11, it is not always necessary to use a compression molded body, and metal powder may be used directly. In this case, a dummy molded product may be mounted in advance so that the powder does not enter the molding chamber, and the powder in the container may be compression-molded and solidified, and then the dummy molded product may be taken out.
なお、本発明による押出成形は、アルミニウム急冷凝
固粉末のほか、マグネシウムおよびその合金、亜鉛およ
びその合金など塑性変形の容易な金属の急冷凝固粉末に
対して適用が可能である。The extrusion molding according to the present invention is applicable to rapidly solidified powders of easily plastically deformable metals such as magnesium and its alloys, zinc and its alloys, in addition to aluminum rapidly solidified powders.
（発明の効果） 以上説明した通り、本発明の押出成形方法によれば、
押出によって、急冷凝固金属粉末の表面に形成されてい
る酸化物被膜を分断し基地中に分散させると共に基地を
拡散接合できるので、押出素材として急冷凝固金属粉末
を用いることができ、押出素材の成形に高価な設備を要
するHIP処理等を省略することができ、生産設備のコス
ト低減を図ることができる。(Effect of the Invention) As described above, according to the extrusion molding method of the present invention,
By extrusion, the oxide film formed on the surface of the rapidly solidified metal powder can be divided and dispersed in the matrix, and the matrix can be diffusion-bonded. Therefore, the rapidly solidified metal powder can be used as the extruded material, and the extruded material can be formed. HIP processing or the like which requires expensive equipment can be omitted, and the cost of production equipment can be reduced.
また、押出しと共に加圧成形を完了するので、押出し
によって、所期の成形品を得ることができ、総合生産性
に優れ、成形品のコスト軽減に寄与すること著大であ
る。Further, since the pressure molding is completed together with the extrusion, the desired molded product can be obtained by the extrusion, which is excellent in overall productivity and contributes to the reduction of the cost of the molded product.
また、急冷凝固金属粉末から成形品を得る間に、少な
くとも押し出し時にのみ加熱すればよいから、急冷凝固
金属粉末の材料特性を損うことなく、所期の成形品を得
ることができる。In addition, while obtaining a molded product from the rapidly solidified metal powder, it is sufficient to heat at least only at the time of extrusion, so that an intended molded product can be obtained without impairing the material properties of the rapidly solidified metal powder.
更に、押出成形部分を成形孔内に収容したまま、コン
テナの移動により該部分とコンテナの押出孔内の押出材
とをせん断により切断することができるので、成形品の
外形状を損うことなく、極めて容易に切断することがで
き生産性に優れる。また、切断に伴う材料ロスも生じな
い。Furthermore, since the extruded part can be cut by shearing the part and the extruded material in the extruded hole of the container by moving the container while the extruded part is housed in the formed hole, without impairing the outer shape of the molded article. It can be cut very easily and is excellent in productivity. Further, there is no material loss associated with cutting.
また、成形室内の成形品は、マンドレルをコンテナ側
へ移動し、成形品のフランジ部を成形孔開口面より離間
した後、抜型治具によって支持するだけで、マンドレル
の退行によって成形品と成形型部との強固な密着状態を
解消することができ、成形品の成形孔からの取出しを極
めて容易に行うことができる。In addition, the molded product in the molding chamber moves the mandrel to the container side, separates the flange portion of the molded product from the opening surface of the molding hole, and then supports it with the removal jig. A strong contact state with the part can be eliminated, and removal of the molded product from the molding hole can be performed extremely easily.
このように、本発明によれば、コスト面および品質面
において優れた成形品を容易に得ることができ、工業的
利用価値は著大である。As described above, according to the present invention, a molded product excellent in cost and quality can be easily obtained, and the industrial utility value is remarkable.
第１図〜第４図は本発明を実施するための装置と加工プ
ロセスを示す断面説明図であって、第１図は圧縮成形体
のコンテナへの装填状態を、第２図は押出成形状態を、
第３図は押出材のせん断状態を、第４図は成形品の取出
し状態を示す。また、第５図は成形孔の他例を示す要部
断面図、第６図は抜型治具の抜型爪の平面説明図、第７
図はコンテナおよび抜型治具を備えた基盤の説明図、第
８図は押出成形装置の他例を示す断面説明図である。 １……成形金型、３……成形孔、3a……拡径部、3b,3c
……孔型部、７……マンドレル、８……成形型部、11,1
1a……コンテナ、12……押出孔、18,18a……抜型治具、
20……成形品、20a……フランジ部。1 to 4 are cross-sectional explanatory views showing an apparatus and a working process for carrying out the present invention. FIG. 1 shows a state in which a compression molded body is loaded into a container, and FIG. To
FIG. 3 shows the state of shearing of the extruded material, and FIG. 4 shows the state of removal of the molded product. FIG. 5 is a sectional view of an essential part showing another example of a molding hole, FIG.
The figure is an explanatory view of a base provided with a container and a removing jig, and FIG. 8 is a sectional explanatory view showing another example of an extrusion molding apparatus. 1 ... molding die, 3 ... molding hole, 3a ... large diameter part, 3b, 3c
…… Die, 7 …… Mandrel, 8 …… Die, 11,1
1a …… Container, 12 …… Extrusion hole, 18,18a …… Removal jig,
20: Molded product, 20a: Flange part.
Claims (1)
を当接させてコンテナ前端面に開口した押出孔12と成形
金型１の当接面に開口した成形孔３とを連通させ、 成形孔３の開口周縁に形成された拡径部3aと該拡径部3a
から下方へ延設された孔型部3bと該孔型部3bに密接して
挿着されたマンドレル７の成形型部８とによって構成さ
れた成形室９にコンテナ11の内部に収容された急冷凝固
粉末を押出して加圧成形した後、 コンテナ11を押出し方向に対して直角方向に移動させて
押出材を成形孔３の開口面でせん断した後、 マンドレル７をコンテナ側へ移動して成形孔３の拡径部
3aによって成形された成形品20のフランジ部20aを成形
孔３の開口面より離間させて該フランジ部20aを抜型治
具18によって支持した後、マンドレル７を成形金型側へ
戻して成形品20と成形型部８との縁を切り、抜型治具18
から成形品20を取出すことを特徴とする急冷凝固金属粉
末の押出成形方法。1. A molding die 1 is provided on a front end face of a container 11 in the extrusion direction.
The extrusion hole 12 opened in the front end surface of the container and the molding hole 3 opened in the contact surface of the molding die 1 communicate with each other, and the enlarged diameter portion 3a formed on the periphery of the opening of the molding hole 3 Expanded part 3a
Quenching accommodated inside the container 11 in a molding chamber 9 formed by a mold part 3b extending downward from the mold and a mold part 8 of the mandrel 7 inserted closely to the mold part 3b. After the solidified powder is extruded and pressed, the container 11 is moved in a direction perpendicular to the extrusion direction to shear the extruded material at the opening surface of the forming hole 3, and then the mandrel 7 is moved to the container side to form the forming hole. 3 enlarged part
After the flange portion 20a of the molded product 20 formed by 3a is separated from the opening surface of the molding hole 3 and the flange portion 20a is supported by the removing jig 18, the mandrel 7 is returned to the molding die side and the molded product 20 is removed. The edge of the molding die 8 is cut off,
A method for extruding a rapidly solidified metal powder, comprising taking out a molded product 20 from a mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP299288A JP2574835B2 (en) | 1988-01-08 | 1988-01-08 | Extrusion molding method of rapidly solidified metal powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP299288A JP2574835B2 (en) | 1988-01-08 | 1988-01-08 | Extrusion molding method of rapidly solidified metal powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01180908A JPH01180908A (en) | 1989-07-18 |
| JP2574835B2 true JP2574835B2 (en) | 1997-01-22 |
Family
ID=11544872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP299288A Expired - Lifetime JP2574835B2 (en) | 1988-01-08 | 1988-01-08 | Extrusion molding method of rapidly solidified metal powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2574835B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5039476A (en) * | 1989-07-28 | 1991-08-13 | Ube Industries, Ltd. | Method for production of powder metallurgy alloy |
| JP6826280B2 (en) | 2016-01-15 | 2021-02-03 | セントラル硝子株式会社 | Method for producing trans-1-chloro-3,3,3-trifluoropropene |
-
1988
- 1988-01-08 JP JP299288A patent/JP2574835B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01180908A (en) | 1989-07-18 |
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