JPH0353005A - Refractoriness frame - Google Patents
Refractoriness frameInfo
- Publication number
- JPH0353005A JPH0353005A JP18702489A JP18702489A JPH0353005A JP H0353005 A JPH0353005 A JP H0353005A JP 18702489 A JP18702489 A JP 18702489A JP 18702489 A JP18702489 A JP 18702489A JP H0353005 A JPH0353005 A JP H0353005A
- Authority
- JP
- Japan
- Prior art keywords
- frame
- refractoriness
- sintering
- metal
- mounting surface
- 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
- 239000002184 metal Substances 0.000 claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 claims abstract description 32
- 238000005245 sintering Methods 0.000 claims abstract description 14
- 238000004663 powder metallurgy Methods 0.000 claims abstract description 6
- 230000009970 fire resistant effect Effects 0.000 claims description 11
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 8
- 230000008602 contraction Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 4
- 239000000843 powder Substances 0.000 description 8
- 238000000137 annealing Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 235000014443 Pyrus communis Nutrition 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000000462 isostatic pressing Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000009703 powder rolling Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、耐火性架台に関するものである。詳しく述べ
ると本発叩は、粉末冶金における焼結の際、所望形状に
成形された金属圧粉体を載置しておくための耐火性架台
に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a fire-resistant frame. To be more specific, the present invention relates to a fire-resistant pedestal on which a metal compact formed into a desired shape is placed during sintering in powder metallurgy.
（従来の技術）
粉末冶金は、超硬合余部品、高融点金属部品、多孔質部
品などの製造において書くから用いられており、また、
最近では秩系金属部品の製造においても広く用いられる
ようになっている。(Prior Art) Powder metallurgy has been used in the production of cemented carbide composite parts, high melting point metal parts, porous parts, etc.
Recently, it has become widely used in the production of metal parts.
このような粉末焼桔においては、一般に、金型成形法、
スリップキャスト法、ペレット押出し法、通電加熱成形
法、ホットプレス法、粉末圧延法、静水圧成形注などの
適当な粉末成形により所望形状を付与された成形体（金
属圧粉体）を、その融点以下の温度で加熱し、緻密化さ
せることが行なわれる。In general, for such powder sintered wood, molding method, molding method,
A molded body (metal green compact) that has been given a desired shape by a suitable powder compaction method such as slip casting, pellet extrusion, electrical heating, hot pressing, powder rolling, or isostatic pressing is heated to its melting point. Densification is performed by heating at the following temperature.
ところで、この焼結の際、金属圧粉体は加処炉内におい
て架台上に載置される。金属圧粉体は、焼拮時焼き締ま
りなどにより収縮するが、架台に金属圧粉体の一部が焼
付くため、金属圧粉体下面が拘束され、自山に収縮でき
る上面側の長さとの差により、製品に四りが生じてしま
っていた。殊に細長い形状の製品においてはこの現象が
顕著であり、問題であった。By the way, during this sintering, the metal compact is placed on a pedestal in a processing furnace. The metal compact shrinks due to compaction during burnout, but as a part of the metal compact is burned to the mount, the bottom surface of the metal compact is restrained, and the length of the top surface that can shrink to its own peak is reduced. Due to the difference in quality, the product would be warped. This phenomenon is particularly noticeable in elongated products and is a problem.
（発四が解訣しようとする課題）
従って、本允川は新規な耐火性架台を提供することを目
的とするちのである。本発川はまた、粉末焼↑＋’ｉの
焼拮時における金属圧扮体の変形を生じさせない酎火性
架台を提供することを目的とするものである。本発明は
さらに、金屈圧粉体の焼結時における収縮に追従できる
載置面を何する耐火性架台を提供することを目的とする
ものである。(The problem that Hatsushi is trying to solve) Therefore, Honjogawa aims to provide a new fire-resistant frame. Another object of the present invention is to provide a base that does not cause deformation of the metal pressing body during annealing of powder sintering ↑+'i. A further object of the present invention is to provide a fire-resistant pedestal that has a mounting surface that can follow the shrinkage of the gold compressed powder during sintering.
（課題を解決するための手段）
上記諸目的は、粉末冶金における焼結の際、焼結炉内に
おいて、所望形状を６する金属圧粉体を載買するための
耐火性架台であって、載置面が所定の収縮空隙を介して
相互に離間配八された複数の分割部材によって構成され
ている特徴とする耐火性架台によって達成される。(Means for Solving the Problem) The above objects are a refractory mount for mounting a metal green compact having a desired shape in a sintering furnace during sintering in powder metallurgy, This is achieved by a fire-resistant pedestal characterized in that the mounting surface is constituted by a plurality of divided members spaced apart from each other with predetermined shrinkage gaps.
さらに本発川においては、この｛：１１互に離間配置さ
れた複数の分割部制を、各分割部刊の対向する側面にそ
れぞれ形成された突起とこれに嵌合する満によって連結
した耐火性梨台を示すものである。Furthermore, in Honbatsu River, a fire-resistant structure was developed in which a plurality of divided divisions arranged at a distance from each other were connected by protrusions formed on the opposing sides of each division and mats that fit into the protrusions. This indicates a pear stand.
（作用）
しかして、本発明においては、耐熱性架台を複数の部材
により構成し、これらを所定の収縮空間を介して相互に
離間配置したものであるから、該架台上に所定形状とさ
れた金属圧粉体を載誼し、焼拮を行なった場合に、仮に
金属圧粉体の下面が架台の載置面に焼付いたとしても、
金属圧粉体の収縮に追従して前記収縮空間が縮まること
によって、これに対応するので、金属圧粉体に局部的な
収縮差が生じることがなく、このため細長い形状のもの
であっても所望形状のまま焼結でき、製品歩留りが良好
なものとなる。(Function) According to the present invention, the heat-resistant pedestal is composed of a plurality of members, which are arranged apart from each other with a predetermined shrinkage space. When a metal compact is loaded and annealed, even if the bottom surface of the metal compact is burned to the mounting surface of the stand,
This is handled by contracting the shrinkage space following the contraction of the metal compact, so there is no local shrinkage difference in the metal compact, and therefore even if the metal compact is long and narrow, It can be sintered in the desired shape, resulting in a good product yield.
さらに本発明の耐火性架台において、この相互に離間配
置された複数の分割部利を、突起とこれに嵌合する溝な
どによって連粘すれば、前記収縮空隙の収縮に方向性を
もたせることができ、従って、焼桔品にねじれや■りを
生じさせる虞れも極めて少ないものとなる。Furthermore, in the fire-resistant frame of the present invention, if the plurality of divided portions arranged at a distance from each other are interconnected by a protrusion and a groove that fits into the protrusion, the shrinkage gap can have directionality. Therefore, there is very little risk of twisting or twisting the fired product.
（実施列） 以下、本発叩を実施例によりさらに具体的に説門する。(Implementation row) Hereinafter, this firing will be explained in more detail using examples.
第１図は、本発四の耐火性架合の一実施列の構造を示す
断面図である。FIG. 1 is a cross-sectional view showing the structure of one row of the four fire-resistant bridges of the present invention.
この実施例において、耐火性架台１は、複数の分７；リ
部利２から構成されている。この分フ；リ部利２は、一
方の側面に凹状満３を庁し、他方の則面に凸状突起４を
有している。そして、ある分割部材２の凹状溝３には、
隣接する別の分割部材２の凸状突起４が所定の空隙５だ
け離間して収縮自在にかつ比較的緊密に嵌合され、一方
、凸状突起４は反対面側で隣接するさらに別の分割部材
２の凹状溝３に所定の空隙５だけ離間して収縮自在にか
つ比較的緊密に嵌合されるというようにして、すべての
分割部月２が連設されている。従って、この連設された
各分割部材２の上面によって形成される載置面は、所定
の間隔ごとに収縮可能な空隙５を有しており、焼粘炉内
においてこの耐火性架台１の載置面に金属圧粉体６を載
置して焼粘を行なった場合、載置面となる分割部材２の
上面に、仮に金属圧粉体６の下面が焼付いたとしても、
金属圧粉体６の焼き締りに伴ない各空隙５が狭まるため
、金属圧粉体６の下面側が、拘束されることなく収縮で
き、上面側との収縮差がなくなり、またねじれや■りを
生じることなど゛もないため、焼李古体の変形が防止さ
れる。In this embodiment, the fireproof frame 1 is composed of a plurality of parts 7 and 2. The fringe 2 has a concave shape 3 on one side and a convex protrusion 4 on the other side. In the concave groove 3 of a certain dividing member 2,
The convex protrusions 4 of another adjacent divided member 2 are spaced apart by a predetermined gap 5 and fit together retractably and relatively tightly, while the convex protrusions 4 of another adjacent divided member 2 are fitted relatively tightly on the opposite side. All the divided portions 2 are connected to each other in such a manner that they are fit into the concave groove 3 of the member 2 with a predetermined gap 5 apart, so that they can be contracted and relatively tightly fitted. Therefore, the mounting surface formed by the upper surface of each of the continuous divided members 2 has shrinkable gaps 5 at predetermined intervals, and the refractory pedestal 1 is mounted in the baking furnace. When the metal compact 6 is placed on the mounting surface and baked and viscous, even if the bottom surface of the metal compact 6 is baked onto the upper surface of the dividing member 2, which is the mounting surface,
As each gap 5 narrows as the metal compact 6 is baked and compacted, the bottom side of the metal compact 6 can contract without being constrained, eliminating the difference in shrinkage with the top side, and preventing twisting and twisting. Since this does not occur, deformation of the charred ancient body is prevented.
本発川の耐火性架台において、載ＩＮ而を｛１４成する
分別部利２およびその間に設けられる収縮空隙５の形状
・配置等は、載置される金属圧粉体を支持し得、かつ金
屈圧粉体の焼結時における収縮に十分追従できるだけの
空帥の余裕を白゛する眼りにおいて、特に眼定されるも
のではな《、前記第１図に示す実札例のような構成以外
にち、挿々の＋ｌ′４戊が取られ得る。例えば、最も簡
単な構成としては、金属圧粉体が形状的にねじれや咄り
を生じにくいものである場合、第２図に示すように、分
割部相２として前記したような凹状溝と凸状突此との組
合せによる継合手段等を省略した単純な矩形のブロック
を用い、これを複数個相互に離間配置したものが考えら
れる。また、第３図に示す別の態様においては、各分割
部月２に設けられる凹状満３および凸状突起４を、上下
方向および左右方向へのずれを規制できるような形状と
し、載置面の長さ方向における収縮に直進性をもたせる
ようにするものとしている。さらに、これらの実施例に
おいては、収縮空隙５は長さ方向に直交する方同、すな
わち幅方向に設け、金属圧粉体６の長さ方向における収
縮に追従できるものとされているが、対象となる金属圧
粉体６の形状等に応じ、このような収縮空隙５を長さ方
向に設ける、長さ方向および幅方向に設ける、あるいは
斜め方向に設けるなどの態様も可能であり、いずれにお
いてち金屈圧粉体の焼桔時における収縮に帰因する変形
を防止することができるものである。In Honbukikawa's fireproof frame, the shape, arrangement, etc. of the separation section 2 that constitutes the loading space and the contraction gap 5 provided therebetween are such that they can support the metal compacts placed thereon, and It is not particularly important to have enough air space to sufficiently follow the shrinkage of the compacted powder during sintering. In addition to the configuration, occasional additions of +l'4 may be taken. For example, in the simplest configuration, if the metal powder compact is shaped so that it does not easily twist or twist, as shown in Fig. It is conceivable to use a simple rectangular block that does not require a joining means or the like in combination with the shape, and to arrange a plurality of these at a distance from each other. In addition, in another embodiment shown in FIG. 3, the concave portion 3 and the convex projection 4 provided on each divided portion 2 are shaped so that displacement in the vertical and horizontal directions can be restricted, and the mounting surface The contraction in the length direction is made to have straightness. Furthermore, in these embodiments, the contraction voids 5 are provided in the direction perpendicular to the length direction, that is, in the width direction, so that they can follow the contraction in the length direction of the metal compact 6. Depending on the shape of the metal powder compact 6, etc., it is possible to provide such shrinkage voids 5 in the length direction, in the length and width directions, or in the diagonal direction. This makes it possible to prevent deformation caused by shrinkage of the compressed metal powder during firing.
（発川の効果）
以上述べたように本允叩は、粉末冶金における焼結の際
、焼拮炉内において、所望形状を何する金属圧粉体を載
１ｄするための耐火性架台であって、載置面が所定の収
縮空隙を介して相互に離間配訳された複数の分別部材に
よって｛Ｉ′４成されている特徴とするしのであるため
に、焼結の際金属圧粉体の下面が架台の載置面に焼ｆ・
ｊいたとしてち、金属圧粉体の」二面側と下面側とに収
縮差が生じることがなく、このため細長い形状のちので
あっても所望形状のまま焼結でき、製品歩留りが良好な
ものとなる。(Effects of Hatsukawa) As mentioned above, the Hon-Nobaki is a fire-resistant pedestal on which a metal green compact having a desired shape is placed in an annealing furnace during sintering in powder metallurgy. Since the mounting surface is formed by a plurality of separating members spaced apart from each other through predetermined shrinkage gaps, the metal compact is The bottom surface of the
However, there is no difference in shrinkage between the two sides and the bottom side of the metal compact, so even if the shape is elongated, it can be sintered in the desired shape, resulting in a good product yield. becomes.
第１〜３図は、それぞれ本発明の耐火性架台の一実施ｆ
ｆｌｌの１１４造を示す図面である。
１・・・耐火性架台、２・・・分割部材、３・・・凸状
突起、４・・・凹状満、５・・・収縮空隙、６・・・金
属圧粉体。
持許出廚１人
亘起物産株式会社FIGS. 1 to 3 each illustrate one embodiment of the fire-resistant frame of the present invention.
This is a drawing showing the 114th structure of FLL. DESCRIPTION OF SYMBOLS 1... Fireproof frame, 2... Divided member, 3... Convex projection, 4... Concave shape, 5... Shrinkage gap, 6... Metal compact. Jiho Departure Ichinin Wataru Bussan Co., Ltd.
Claims (1)
所望形状を有する金属圧粉体を載置するための耐火性架
台であって、載置面が所定の収縮空隙を介して相互に離
間配置された複数の分割部材によって構成されている特
徴とする耐火性架台。(1) During sintering in powder metallurgy, in the sintering furnace,
A fire-resistant pedestal for mounting a metal compact having a desired shape, characterized in that the mounting surface is constituted by a plurality of divided members spaced apart from each other with a predetermined contraction gap interposed therebetween. Fireproof mount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18702489A JPH0353005A (en) | 1989-07-19 | 1989-07-19 | Refractoriness frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18702489A JPH0353005A (en) | 1989-07-19 | 1989-07-19 | Refractoriness frame |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0353005A true JPH0353005A (en) | 1991-03-07 |
Family
ID=16198862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18702489A Pending JPH0353005A (en) | 1989-07-19 | 1989-07-19 | Refractoriness frame |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0353005A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2544577A (en) * | 2015-07-06 | 2017-05-24 | Safran Aircraft Engines | Tooling for use during heat treatment to support a preform made of powder |
-
1989
- 1989-07-19 JP JP18702489A patent/JPH0353005A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2544577A (en) * | 2015-07-06 | 2017-05-24 | Safran Aircraft Engines | Tooling for use during heat treatment to support a preform made of powder |
| US10239796B2 (en) | 2015-07-06 | 2019-03-26 | Safran Aircraft Engines | Tooling for use during heat treatment to support a preform made of powder |
| GB2544577B (en) * | 2015-07-06 | 2019-05-15 | Safran Aircraft Engines | Tooling for use during heat treatment to support a preform made of powder |
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