JPH0714604B2 - Automatic molding device and method for molybdenum disilicide heating element - Google Patents
Automatic molding device and method for molybdenum disilicide heating elementInfo
- Publication number
- JPH0714604B2 JPH0714604B2 JP2227949A JP22794990A JPH0714604B2 JP H0714604 B2 JPH0714604 B2 JP H0714604B2 JP 2227949 A JP2227949 A JP 2227949A JP 22794990 A JP22794990 A JP 22794990A JP H0714604 B2 JPH0714604 B2 JP H0714604B2
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- molybdenum disilicide
- mandrel
- disilicide heating
- pair
- 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 - Fee Related
Links
- 238000010438 heat treatment Methods 0.000 title claims description 91
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 title claims description 85
- 229910021343 molybdenum disilicide Inorganic materials 0.000 title claims description 84
- 238000000034 method Methods 0.000 title claims description 14
- 238000000465 moulding Methods 0.000 title claims description 14
- 230000005611 electricity Effects 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 14
- 238000003825 pressing Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 241000549194 Euonymus europaeus Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910016006 MoSi Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910021344 molybdenum silicide Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Resistance Heating (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Ceramic Products (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、ヒータとして使用される二珪化モリブデン発
熱体を自動的にＵ字状に成形する装置及び成形法に関連
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a molding method for automatically forming a molybdenum disilicide heating element used as a heater into a U shape.
従来の技術 非酸化物中で最も優れた耐酸化性を有する二珪化モリブ
デンは、高温下での高強度、耐食性及び導電性を備え、
発熱体として使用されている。二珪化モリブデン発熱体
は、1400℃以上の高温で可塑性を有し、大きな粘性があ
る。また、1700℃を超えて1800℃付近の温度下では完全
な熱可塑性となるから、二珪化モリブデン発熱体を通常
Ｕ字形に加工した後、垂直に保持して取付け、加熱冷却
時の膨張及び収縮を吸収することができる。Conventional technology Molybdenum disilicide, which has the best oxidation resistance among non-oxides, has high strength at high temperatures, corrosion resistance, and electrical conductivity.
It is used as a heating element. The molybdenum disilicide heating element has plasticity and high viscosity at high temperatures of 1400 ° C or higher. In addition, since it becomes completely thermoplastic at temperatures above 1700 ° C and around 1800 ° C, molybdenum disilicide heating elements are usually processed into a U shape and then held vertically to be mounted and expanded and contracted during heating and cooling. Can be absorbed.
発明が解決しようとする課題 従来、脆い二珪化モリブデン発熱体をＵ字形に手動で加
工していたので、加工工数が増加し、変形精度が不均一
になる欠点がある。Problems to be Solved by the Invention Conventionally, since a brittle molybdenum disilicide heating element has been manually processed into a U shape, there is a drawback that the processing man-hour increases and the deformation accuracy becomes uneven.
本発明は、二珪化モリブデン発熱体を自動的にＵ字形に
加工する自動成形装置及び自動成形法を提供することを
目的とする。An object of the present invention is to provide an automatic molding apparatus and an automatic molding method for automatically processing a molybdenum disilicide heating element into a U-shape.
課題を解決するための手段 本発明による二珪化モリブデン発熱体の自動成形装置
は、共通支軸の周りに回動可能にベース上に支持された
一対のテーブルと、引張駆動装置と、引張駆動装置とテ
ーブルとを連結するリンク部材と、電極として各テーブ
ル上に支持されかつ二珪化モリブデン発熱体を支持する
一対のクランプと、一対のクランプの間に配置されたマ
ンドレルと、ベースに固定されかつマンドレルを支持す
ると共に、一対のクランプの間で引張駆動装置の移動方
向と平行にマンドレルを移動するマンドレル移動装置と
を備えている。二珪化モリブデン発熱体を装着したクラ
ンプに電圧を印加して二珪化モリブデン発熱体を加熱す
る。また、マンドレル移動装置を作動してマンドレルを
引張駆動装置から離間する方向に移動させて、二珪化モ
リブデン発熱体の折曲げ部をマンドレルに当接させなが
ら、引張駆動装置によりリンク部材を引くことにより一
対のテーブルを共通支軸の周りで互いに反対方向に回転
して二珪化モリブデン発熱体をマンドレルの周りでＵ字
状に自動的に加工する。本発明の実施例では、各テーブ
ル上に取り付けられかつ各テーブルに設けられたガイド
レールに沿ってクランプの位置を調節するクランプ移動
装置を備えている。Means for Solving the Problems An automatic forming device for a molybdenum disilicide heating element according to the present invention includes a pair of tables rotatably supported on a base around a common support shaft, a pulling drive device, and a pulling drive device. And a table, a pair of clamps supported on each table as electrodes and supporting a molybdenum disilicide heating element, a mandrel arranged between the pair of clamps, and a mandrel fixed to the base. And a mandrel moving device that moves the mandrel between the pair of clamps in parallel with the moving direction of the pulling drive device. A voltage is applied to a clamp equipped with a molybdenum disilicide heating element to heat the molybdenum disilicide heating element. Further, by operating the mandrel moving device to move the mandrel in a direction away from the tension driving device, and pulling the link member by the tension driving device while bringing the bent portion of the molybdenum disilicide heating element into contact with the mandrel. A pair of tables are rotated in opposite directions about a common spindle to automatically form a molybdenum disilicide heating element around the mandrel into a U-shape. Embodiments of the present invention include a clamp moving device that is mounted on each table and that adjusts the position of the clamp along a guide rail provided on each table.
また、本発明による二珪化モリブデン発熱体の自動成形
法は、共通支軸の周りに回動可能にベース上に支持され
た一対のテーブル、引張駆動装置、引張駆動装置とテー
ブルとを連結するリンク部材、電極として各テーブル上
に支持された一対のクランプ、一対のクランプの間に配
置されたマンドレル及びベースに固定されかつマンドレ
ルを支持すると共に、一対のクランプの間で引張駆動装
置の移動方向と平行にマンドレルを移動するマンドレル
移動装置とを備えた自動成形装置を準備する過程と、一
対のクランプに二珪化モリブデン発熱体を装着して支持
しかつ一対のクランプに電圧を印加することにより二珪
化モリブデン発熱体に通電して加熱する過程と、マンド
レル移動装置によりマンドレルを引張駆動装置から離間
する方向に移動させて、二珪化モリブデン発熱体の折曲
げ部をマンドレルに当接させながら、引張駆動装置によ
りリンク部材を引くことにより一対のテーブルを共通支
軸の周りで互いに反対方向に回転して、二珪化モリブデ
ン発熱体をマンドレルの周りでＵ字状に加工する過程と
を含む。本発明の実施例では、二珪化モリブデン発熱体
が所定の上限温度に達したときに、通電を停止すると共
に、引張駆動装置によりリンク部材を引き、二珪化モリ
ブデン発熱体が下限温度まで下降したときに引張駆動装
置の動作を停止して、通電を行つて上限温度まで再加熱
し、引張駆動装置によりリンク部材を引き、一対のテー
ブルを共通支軸の周りで互いに反対方向に回転する。前
記の操作を複数回反復して二珪化モリブデン発熱体をＵ
字状に成形する。各テーブル上に取り付けられたクラン
プ移動装置により、各テーブルに設けられたガイドレー
ルに沿ってクランプの位置を調節してもよい。In addition, the method of automatically forming a molybdenum disilicide heating element according to the present invention includes a pair of tables rotatably supported on the base about a common support shaft, a tension driving device, and a link connecting the tension driving device and the table. A member, a pair of clamps supported on each table as electrodes, a mandrel disposed between the pair of clamps and fixed to a base and supporting the mandrel, and a moving direction of the pulling drive device between the pair of clamps. The process of preparing an automatic forming device equipped with a mandrel moving device that moves the mandrel in parallel, and by supporting the pair of clamps with molybdenum disilicide heating elements and supporting them and applying a voltage to the pair of clamps The process of energizing and heating the molybdenum heating element and the mandrel moving device moving the mandrel away from the tension drive. Then, while the bent portion of the molybdenum disilicide heating element is brought into contact with the mandrel, the pair of tables are rotated in the opposite directions around the common support shaft by pulling the link member by the pulling drive device. Processing the heating element into a U-shape around the mandrel. In the embodiment of the present invention, when the molybdenum disilicide heating element reaches a predetermined upper limit temperature, the energization is stopped, the link member is pulled by the tension driving device, and the molybdenum disilicide heating element is lowered to the lower limit temperature. Then, the operation of the tension driving device is stopped, electricity is supplied to reheat to the upper limit temperature, the link member is pulled by the tension driving device, and the pair of tables are rotated in the opposite directions around the common support shaft. The above operation is repeated a plurality of times to form a molybdenum disilicide heating element.
Form into a letter shape. The position of the clamp may be adjusted along a guide rail provided on each table by a clamp moving device mounted on each table.
作用 二珪化モリブデン発熱体を装着したクランプに電圧を印
加して二珪化モリブデン発熱体を適温まで加熱して、マ
ンドレル移動装置を作動してマンドレルを引張駆動装置
から離間する方向に移動させる。また、二珪化モリブデ
ン発熱体の折曲げ部をマンドレルに当接させながら、引
張駆動装置によりリンク部材を引くことにより一対のテ
ーブルを共通支軸の周りで互いに反対方向に回転して二
珪化モリブデン発熱体とマンドレルの周りでＵ字状に成
形する。このため、二珪化モリブデン発熱体の自動成形
が可能である。二珪化モリブデン発熱体の折曲げ部をマ
ンドレルに当接させながら、引張駆動装置によりリンク
部材を引くことにより、クランプの中間の所望位置に一
定の曲率半径を備えた折曲げ部を二珪化モリブデン発熱
体に形成すると共に、二珪化モリブデン発熱体の急激な
屈曲成形を回避すると共に、折曲げ時に正確な変形を促
進することができる。成形の際に、一対のリンク部材を
使用するので、折曲げ部中心とする二珪化モリブデン発
熱体の両側に均等に押圧力を加えて、二珪化モリブデン
発熱体を曲げることができる。Function A voltage is applied to a clamp equipped with a molybdenum disilicide heating element to heat the molybdenum disilicide heating element to an appropriate temperature, and the mandrel moving device is actuated to move the mandrel away from the tension driving device. Also, while the bent portion of the molybdenum disilicide heating element is brought into contact with the mandrel, the pair of tables are rotated in opposite directions around the common support shaft by pulling the link member by the pulling drive device to generate molybdenum disilicide heat. Form a U around the body and mandrel. Therefore, it is possible to automatically form a molybdenum disilicide heating element. By pulling the link member with the tension drive while the bent part of the molybdenum disilicide heating element is in contact with the mandrel, the bent part with a constant radius of curvature is generated at the desired position in the middle of the clamp. In addition to being formed in the body, it is possible to avoid sharp bending of the molybdenum disilicide heating element and to promote accurate deformation during bending. Since a pair of link members are used during the molding, the molybdenum disilicide heating element can be bent by applying a pressing force evenly to both sides of the molybdenum disilicide heating element, which is the center of the bent portion.
実施例 以下、本発明による二珪化モリブデン発熱体の自動成形
装置の実施例を第１図〜第３図について説明する。EXAMPLE An example of an automatic forming apparatus for a molybdenum disilicide heating element according to the present invention will be described below with reference to FIGS.
第１図及び第２図に示すように、この自動成形装置は、
ベース16と、ベース16上に支持された支柱17と、支柱17
上に支持された共通支軸11と、共通支軸11の周りで回転
可能に支持された一対のテーブル10と、各テーブル10上
に取り付けられた一対のクランプ移動装置20、30とを備
えている。各テーブル10にはガイドレール18が固定さ
れ、ガイドレール18に滑動嵌合されたスライダ19（第２
図）をそれぞれ備えたクランプ21、31は、固定位置の調
節のため、対応するガイドレール18に沿って移動でき
る。シリンダ装置22のラム22aはクランプ移動装置20に
装備されたクランプ21に連結され、シリンダ装置32のラ
ム32aはクランプ移動装置30に装備されたクランプ31に
連結されるから、クランプ21、31は各クランプ移動装置
20、30のシリンダ装置22、32によってガイドレール18上
の所定位置に位置決めされる。クランプ21、31は、同一
平面内で共通支軸11の周りに回動自在にテーブル10上に
支持される。As shown in FIG. 1 and FIG.
Base 16, support 17 supported on base 16, support 17
A common support shaft 11 supported above, a pair of tables 10 rotatably supported around the common support shaft 11, and a pair of clamp moving devices 20 and 30 mounted on each table 10 are provided. There is. A guide rail 18 is fixed to each table 10, and a slider 19 (second
The clamps 21, 31 each with a drawing) can be moved along the corresponding guide rail 18 for adjusting the fixed position. The ram 22a of the cylinder device 22 is connected to the clamp 21 mounted on the clamp moving device 20, and the ram 32a of the cylinder device 32 is connected to the clamp 31 mounted on the clamp moving device 30. Clamp moving device
It is positioned at a predetermined position on the guide rail 18 by the cylinder devices 22 and 32 of 20 and 30. The clamps 21 and 31 are rotatably supported on the table 10 around the common support shaft 11 in the same plane.
リンク部材12の一端はクランプ移動装置20に軸着され、
他端は連結ピン14により引張駆動装置15の作動ロッド16
に連結される。同様に、リンク部材13の一端はクランプ
移動装置30に軸着され、他端は連結ピン14により引張駆
動装置15の作動ロッド16に連結される。リンク部材12、
13は水平Ｖ字状に配置され、引張駆動装置15は、流体圧
により駆動される図示しないピストンシリンダ装置によ
り作動されるラムに連結されている。二珪化モリブデン
発熱体40を挟持する各クランプ21、31は、第１図に示す
初期位置から第３図に示す動作位置まで最大回転角度90
゜の角度範囲で共通支軸11周りを矢印Ａ、Ｂで示す方向
に回動できる。One end of the link member 12 is pivotally attached to the clamp moving device 20,
The other end is provided with a connecting pin 14 and an operating rod 16 of a pulling drive device 15.
Connected to. Similarly, one end of the link member 13 is pivotally attached to the clamp moving device 30, and the other end is connected to the operating rod 16 of the pulling drive device 15 by the connecting pin 14. Link member 12,
13 is arranged in a horizontal V shape, and the pulling drive device 15 is connected to a ram operated by a piston cylinder device (not shown) driven by fluid pressure. Each of the clamps 21 and 31 for sandwiching the molybdenum disilicide heating element 40 has a maximum rotation angle 90 from the initial position shown in FIG. 1 to the operating position shown in FIG.
It can rotate about the common support shaft 11 in the directions shown by arrows A and B within an angle range of °.
各クランプ21、31にはＵ字状断面の凹部21a、31aが形成
され、凹部21a、31a内に円形断面を備えた直線状の二珪
化モリブデン発熱体40が配置される。二珪化モリブデン
発熱体40を挟持して固定する各クランプ21、31は、抵抗
発熱体である二珪化モリブデン発熱体40に通電して加熱
する電極として働く。通電により加熱して軟化させた二
珪化モリブデン発熱体40の両側を支持するクランプ21、
31を第１図に示す初期位置から第３図に示す動作位置ま
で互いに反対方向に回転させて、二珪化モリブデン発熱
体40をＵ字形に自動的に成形することができる。Recesses 21a, 31a having a U-shaped cross section are formed in each of the clamps 21, 31, and a linear molybdenum disilicide heating element 40 having a circular cross section is arranged in the recesses 21a, 31a. The clamps 21 and 31 for sandwiching and fixing the molybdenum disilicide heating element 40 act as electrodes for energizing and heating the molybdenum disilicide heating element 40 which is a resistance heating element. Clamps 21, which support both sides of the molybdenum disilicide heating element 40, which is heated and softened by energization,
By rotating 31 in opposite directions from the initial position shown in FIG. 1 to the operating position shown in FIG. 3, the molybdenum disilicide heating element 40 can be automatically formed into a U-shape.
また、両クランプ21、31の中間には、可動プレート51上
に固定されたマンドレル50が配置され、可動プレート51
にはピストンシリンダを有するマンドレル移動装置52作
動ロッド53が連結されている。マンドレル移動装置52は
マンドレル50を支持する可動プレート51及び作動ロッド
53を含む。ベース16に支持されたマンドレル移動装置52
の動作に伴う作動ロッド53の移動により、マンドレル50
は、第３図に示す未加工の二珪化モリブデン発熱体40に
対して直角方向に可動プレート51と共に水平に移動さ
れ、クランプ21、31の中間の所望位置に一定の曲率半径
を備えた折曲げ部40aを二珪化モリブデン発熱体40に形
成すると共に、二珪化モリブデン発熱体40の折曲げ時に
変形を促進することができる。A mandrel 50 fixed on the movable plate 51 is arranged between the clamps 21 and 31.
A mandrel moving device 52 operating rod 53 having a piston cylinder is connected to the. The mandrel moving device 52 includes a movable plate 51 that supports the mandrel 50 and an operating rod.
Including 53. Mandrel moving device 52 supported by the base 16
The movement of the operating rod 53 associated with the movement of
Is horizontally moved together with the movable plate 51 in a direction perpendicular to the raw molybdenum disilicide heating element 40 shown in FIG. 3, and is bent at a desired position between the clamps 21 and 31 with a constant radius of curvature. The portion 40a can be formed on the molybdenum disilicide heating element 40, and deformation can be promoted when the molybdenum disilicide heating element 40 is bent.
本発明の実施例では、二珪化モリブデン発熱体40を製造
するため、理論密度:6.48、平均粒子径:1.67μｍ、見掛
密度:1.47g/cc、比表面積:1.8m2/gを有するMoSi2−15％
MoBの粉末原料5kgに、メチルセルロース系混合結合材32
5gと水550gとの混合物を添加して混合した後、混合物を
連続ニーダにより混練した。次に、成形機により、真空
押出し成形を行って円形断面の直線棒状の成形体を得
た。続いて、この成形体を一定時間放置して自然乾燥し
た後、400℃の温度で１時間、水素ガス雰囲気中に配置
して、脱結合材を行った。最後に、1500℃の温度で１時
間真空雰囲気で焼成し、直径約3mmの円形断面で直線状
の二珪化モリブデン発熱体40を得た。In the example of the present invention, to produce the molybdenum disilicide heating element 40, MoSi having a theoretical density of 6.48, an average particle size of 1.67 μm, an apparent density of 1.47 g / cc, and a specific surface area of 1.8 m 2 / g. 2 -15%
MoB powder raw material 5kg, methylcellulose-based mixed binder 32
After adding and mixing a mixture of 5 g and 550 g of water, the mixture was kneaded by a continuous kneader. Next, vacuum extrusion molding was performed by a molding machine to obtain a linear rod-shaped molded body having a circular cross section. Subsequently, the molded body was left to stand for a certain period of time to be naturally dried, and then placed in a hydrogen gas atmosphere at a temperature of 400 ° C. for 1 hour to perform a debinding material. Finally, it was fired in a vacuum atmosphere at a temperature of 1500 ° C. for 1 hour to obtain a linear molybdenum disilicide heating element 40 having a circular cross section with a diameter of about 3 mm.
二珪化モリブデン発熱体40をＵ字状に加工するため、第
１図〜第３図に示す自動成形装置のクランプ21、31の凹
部21a、31a内に直線状の二珪化モリブデン発熱体40を配
置した。次に、クランプ21、31の各クランプ21、31に電
圧を印加して通電し、二珪化モリブデン発熱体40に3Vの
電圧を印加して、25秒間予熱し、屈曲成形される開始直
前の二珪化モリブデン発熱体40を1450℃まで加熱した。In order to process the molybdenum disilicide heating element 40 into a U-shape, the linear molybdenum disilicide heating element 40 is arranged in the recesses 21a and 31a of the clamps 21 and 31 of the automatic molding apparatus shown in FIGS. did. Next, a voltage is applied to each of the clamps 21 and 31 of the clamps 21 and 31 to energize them, a voltage of 3 V is applied to the molybdenum disilicide heating element 40, and preheating is performed for 25 seconds. The molybdenum silicide heating element 40 was heated to 1450 ° C.
予熱段階で、1470℃の温度に達すると、二珪化モリブデ
ン発熱体40は十分に加熱されかつ軟化するので、一旦通
電を停止し、これに同期して、曲げる直前に二珪化モリ
ブデン発熱体40の折曲げ部40aに接触する位置までマン
ドレル50を移動した。引張駆動装置15を作動し、第１図
において、引張駆動装置15の作動ロッド16を共通支軸11
から離間する方向に移動することにより、Ｖ字状に開い
た２つのリンク12、13を作動ロット16で引張り、リンク
部材12、13を介してクランプ21、31を互いに離間する矢
印Ａ方向に回動した。ロッド16の引張により２つのリン
ク部材12、13を引張して、クランプ21、31を離間する矢
印Ａ方向に共通支軸の周りに回動した。続いて、マンド
レル移動装置52の作動により、作動ロッド53を介して、
マンドレル50を引きながら、二珪化モリブデン発熱体40
の折曲げ部40aをマンドレル50に押し当てながら、第３
図の点線で示すように、マンドレル50を支点に二珪化モ
リブデン発熱体40の折曲げ部40aを屈曲させた。この場
合、加熱‐曲げ‐停止を１サイクルとする１回４秒程度
の屈曲成形動作を約20回反復して、１本の二珪化モリブ
デン発熱体40をＵ字状に成形した。二珪化モリブデン発
熱体40の折曲げ部40a付近では、クランプ21、31の回動
円周方向に沿う移動速度は10mm/秒であり、屈曲角度が1
10゜を越した位置では20mm/秒に増速して、最終的にＵ
字状に成形した。脆性の二珪化モリブデン発熱体に対し
て、加熱‐曲げ‐停止の操作サイクルを数10回繰り返し
てＵ字状に屈曲成形すると、品質の安定した高精度の製
品を製造できる。In the preheating stage, when the temperature of 1470 ° C. is reached, the molybdenum disilicide heating element 40 is sufficiently heated and softened, so that the current supply is stopped once, and in synchronization with this, immediately before bending, the molybdenum disilicide heating element 40 is heated. The mandrel 50 was moved to a position in contact with the bent portion 40a. The pulling drive unit 15 is operated, and the operating rod 16 of the pulling drive unit 15 is moved to the common support shaft 11 in FIG.
By moving the links 12 and 13 opened in a V shape in the operation lot 16 by moving in a direction away from the clamps, the clamps 21 and 31 are rotated through the link members 12 and 13 in the direction of arrow A separating from each other. Moved. By pulling the rod 16, the two link members 12 and 13 are pulled, and the clamps 21 and 31 are rotated around the common support shaft in the arrow A direction separating them. Then, by the operation of the mandrel moving device 52, via the operating rod 53,
While pulling the mandrel 50, molybdenum disilicide heating element 40
While pressing the bent portion 40a of the
As shown by the dotted line in the figure, the bent portion 40a of the molybdenum disilicide heating element 40 was bent around the mandrel 50 as a fulcrum. In this case, one molybdenum disilicide heating element 40 was molded into a U-shape by repeating the bending-molding operation for about 4 seconds once for each cycle of heating-bending-stopping for about 20 times. In the vicinity of the bent portion 40a of the molybdenum disilicide heating element 40, the moving speed of the clamps 21 and 31 along the circumferential direction of rotation is 10 mm / sec, and the bending angle is 1 mm.
At a position over 10 °, the speed is increased to 20 mm / sec and finally U
It was formed into a letter shape. When a brittle molybdenum disilicide heating element is subjected to a bending operation in a U-shape by repeating a heating-bending-stopping operation cycle for several tens of times, it is possible to manufacture a product with stable quality and high precision.
この場合、図示しない選択スイッチの操作により、クラ
ンプ21、31の回動速度を10mm/秒から50mm/秒まで、10mm
/秒毎に設定することができる。このとき、二珪化モリ
ブデン発熱体40の屈曲に伴う伸びに対応して、マンドレ
ル移動装置52の作動により可動プレート51の位置を調節
することにより、マンドレル50の移動位置を調整して、
急激な屈曲成形を回避することができる。その後、二珪
化モリブデン発熱体40の温度が前記下限温度より更に低
下した時点で、曲げ成形を停止し、引張駆動装置15の作
動ロッド16及びマンドレル移動装置52を第１図に示す元
の位置まで復帰した。In this case, the rotation speed of the clamps 21 and 31 can be changed from 10 mm / sec to 50 mm / sec by 10 mm by operating the selection switch (not shown).
It can be set every second. At this time, the movement position of the mandrel 50 is adjusted by adjusting the position of the movable plate 51 by the operation of the mandrel movement device 52 in response to the elongation accompanying the bending of the molybdenum disilicide heating element 40,
It is possible to avoid sharp bending. After that, when the temperature of the molybdenum disilicide heating element 40 further falls below the lower limit temperature, the bending process is stopped, and the working rod 16 of the tension driving device 15 and the mandrel moving device 52 are returned to their original positions shown in FIG. I'm back.
加工中、6.5Vの電圧を印加しながら二珪化モリブデン発
熱体40を継続的に加熱したが、加熱上限温度は1470℃
で、下限温度は1420℃であった。図示しない温度センサ
により二珪化モリブデン発熱体40の温度を常時検知し、
検出温度が設定した下限温度1420℃より下降すると、屈
曲成形を一旦停止して再加熱した。During processing, the molybdenum disilicide heating element 40 was continuously heated while applying a voltage of 6.5 V, but the maximum heating temperature was 1470 ° C.
The lower limit temperature was 1420 ° C. A temperature sensor (not shown) constantly detects the temperature of the molybdenum disilicide heating element 40,
When the detected temperature fell below the set lower limit temperature of 1420 ° C, the bending molding was once stopped and reheated.
二珪化モリブデン発熱体40を装着したクランプ21、31に
電圧を印加して二珪化モリブデン発熱体40を適温まで加
熱して、マンドレル移動装置52を作動してマンドレル50
を引張駆動装置15から離間する方向に移動させる。ま
た、二珪化モリブデン発熱体40の折曲げ部40aをマンド
レル50に当接させながら、引張駆動装置15によりリンク
部材12、13を引くことにより一対のテーブル10を共通支
軸11の周りで互いに反対方向Ａに回転して二珪化モリブ
デン発熱体40をマンドレル50の周りでＵ字状に成形す
る。このため、二珪化モリブデン発熱体40の自動成形が
可能である。二珪化モリブデン発熱体40の折曲げ部40a
をマンドレル50に当接させながら、引張駆動装置15によ
りリンク部材12、13を引くことにより、クランプ21、31
の中間の所望位置に一定の曲率半径を備えた折曲げ部40
aを二珪化モリブデン発熱体40に形成すると共に、二珪
化モリブデン発熱体40の急激な屈曲成形を回避すると共
に、折曲げ時に正確な変形を促進することができる。ま
た、成形の際に、一対のリンク部材12、13を使用するの
で、折曲げ部40aを中心とする二珪化モリブデン発熱体4
0の両側に均等に押圧力を加えて、二珪化モリブデン発
熱体40を曲げることができる。A voltage is applied to the clamps 21 and 31 equipped with the molybdenum disilicide heating element 40 to heat the molybdenum disilicide heating element 40 to an appropriate temperature, and the mandrel moving device 52 is operated to operate the mandrel 50.
Is moved in a direction away from the tension driving device 15. Further, while the bent portion 40a of the molybdenum disilicide heating element 40 is brought into contact with the mandrel 50, the pair of tables 10 are opposed to each other around the common support shaft 11 by pulling the link members 12 and 13 by the pulling drive device 15. Rotating in the direction A, the molybdenum disilicide heating element 40 is formed into a U shape around the mandrel 50. Therefore, the molybdenum disilicide heating element 40 can be automatically molded. Bending part 40a of molybdenum disilicide heating element 40
While pulling the link members 12 and 13 by the pulling drive device 15 while abutting the mandrel 50, the clamps 21 and 31
Bend 40 with a constant radius of curvature in the desired position in the middle of
It is possible to form a in the molybdenum disilicide heating element 40, avoid abrupt bending of the molybdenum disilicide heating element 40, and promote accurate deformation during bending. In addition, since a pair of link members 12 and 13 are used at the time of molding, the molybdenum disilicide heating element 4 centered on the bent portion 40a is used.
The molybdenum disilicide heating element 40 can be bent by applying a pressing force evenly to both sides of 0.
発明の効果 前記のように、本発明では、二珪化モリブデン発熱体の
自動成形が可能である。また、クランプの中間の所望位
置に一定の曲率半径を備えた折曲げ部を二珪化モリブデ
ン発熱体に形成すると共に、二珪化モリブデン発熱体の
急激な屈曲成形を回避すると共に、折曲げ時に正確な変
形を促進することができる。自動化によりＵ字状の屈曲
成形の精度が向上し、一定品質を有するＵ字状の二珪化
モリブデン発熱体を効率的に量産できる。EFFECTS OF THE INVENTION As described above, according to the present invention, it is possible to automatically form a molybdenum disilicide heating element. In addition, a bent portion having a constant radius of curvature is formed in a desired position in the middle of the clamp on the molybdenum disilicide heating element, and abrupt bending of the molybdenum disilicide heating element is avoided. Deformation can be promoted. The automation improves the accuracy of the U-shaped bending and makes it possible to efficiently mass-produce U-shaped molybdenum disilicide heating elements having a certain quality.
第１図は本発明による自動成形装置の実施例を示す平面
図、第２図は側面図、第３図は動作状態の部分平面図で
ある。 10……テーブル、11……共通支軸、12、13……リンク部
材、15……引張駆動装置、16……ベース、20、30……ク
ランプ移動装置、21、31……クランプ、50……マンドレ
ル、52……マンドレル移動装置、FIG. 1 is a plan view showing an embodiment of an automatic molding apparatus according to the present invention, FIG. 2 is a side view, and FIG. 3 is a partial plan view in an operating state. 10 …… table, 11 …… common support shaft, 12,13 …… link member, 15 …… pulling drive device, 16 …… base, 20,30 …… clamp moving device, 21,31 …… clamp, 50… … Mandrel, 52 …… Mandrel moving device,
Claims (6)
持された一対のテーブルと、引張駆動装置と、引張駆動
装置とテーブルとを連結するリンク部材と、電極として
各テーブル上に支持されかつ二珪化モリブデン発熱体を
支持する一対のクランプと、一対のクランプの間に配置
されたマンドレルと、ベースに固定されかつマンドレル
を支持すると共に、一対のクランプの間で引張駆動装置
の移動方向と平行にマンドレルを移動するマンドレル移
動装置とを備え、 二珪化モリブデン発熱体を装着したクランプに電圧を印
加して二珪化モリブデン発熱体を加熱し、マンドレル移
動装置を作動してマンドレルを引張駆動装置から離間す
る方向に移動させて、二珪化モリブデン発熱体の折曲げ
部をマンドレルに当接させながら、引張駆動装置により
リンク部材を引くことにより一対のテーブルを共通支軸
の周りで互いに反対方向に回転して二珪化モリブデン発
熱体をマンドレルの周りでＵ字状に自動的に加工するこ
とを特徴とする自動成形装置。1. A pair of tables rotatably supported on a base about a common support shaft, a tension driving device, a link member connecting the tension driving device and the table, and an electrode on each table. A pair of clamps supported and supporting the molybdenum disilicide heating element, a mandrel disposed between the pair of clamps, fixed to the base and supporting the mandrel, and movement of the tension drive between the pair of clamps. Equipped with a mandrel moving device that moves the mandrel in parallel with the direction, heat the molybdenum disilicide heating element by applying a voltage to the clamp equipped with the molybdenum disilicide heating element, and operate the mandrel moving device to pull the mandrel. Move it in the direction away from the device and bring the bent part of the molybdenum disilicide heating element into contact with the mandrel, An automatic forming apparatus characterized in that a pair of tables are rotated about a common support shaft in opposite directions by pulling a link member to automatically machine a molybdenum disilicide heating element into a U shape around a mandrel. .
ルに設けられたガイドレールに沿ってクランプの位置を
調節するクランプ移動装置を備えた請求項１に記載の自
動成形装置。2. The automatic molding apparatus according to claim 1, further comprising a clamp moving device mounted on each table and adjusting a position of the clamp along a guide rail provided on each table.
持された一対のテーブル、引張駆動装置、引張駆動装置
とテーブルとを連結するリンク部材、電極として各テー
ブル上に支持された一対のクランプ、一対のクランプの
間に配置されたマンドレル及びベースに固定されかつマ
ンドレルを支持すると共に、一対のクランプの間で引張
駆動装置の移動方向と平行にマンドレルを移動するマン
ドレル移動装置とを備えた自動成形装置を準備する過程
と、 一対のクランプに二珪化モリブデン発熱体を装着して支
持しかつ一対のクランプに電圧を印加することにより二
珪化モリブデン発熱体に通電して加熱する過程と、 マンドレル移動装置によりマンドレルを引張駆動装置か
ら離間する方向に移動させて、二珪化モリブデン発熱体
の折曲げ部をマンドレルに当接させながら、引張駆動装
置によりリンク部材を引くことにより一対のテーブルを
共通支軸の周りで互いに反対方向に回転して、二珪化モ
リブデン発熱体をマンドレルの周りでＵ字状に加工する
過程とを含むことを特徴とする二珪化モリブデン発熱体
の自動成形法。3. A pair of tables rotatably supported on a base about a common support shaft, a tension driving device, a link member connecting the tension driving device and the table, and an electrode supported on each table. A pair of clamps, a mandrel arranged between the pair of clamps, and a mandrel moving device that is fixed to the base and supports the mandrel and that moves the mandrel between the pair of clamps in parallel to the moving direction of the tension drive device. The process of preparing the provided automatic molding apparatus, the process of mounting and supporting the molybdenum disilicide heating element on the pair of clamps, and applying the voltage to the pair of clamps to energize and heat the molybdenum disilicide heating element. The mandrel moving device moves the mandrel away from the tension driving device to move the bent part of the molybdenum disilicide heating element. While pulling the link member with the pulling drive device while contacting the drel, the pair of tables are rotated in the opposite directions around the common support shaft, and the molybdenum disilicide heating element is processed into a U shape around the mandrel. A method for automatically forming a molybdenum disilicide heating element, which comprises the steps of:
に達したときに、通電を停止すると共に、引張駆動装置
によりリンク部材を引き、二珪化モリブデン発熱体が下
限温度まで下降したときに引張駆動装置の動作を停止し
て、通電を行って上限温度まで再加熱し、引張駆動装置
によりリンク部材を引き、一対のテーブルを共通支軸の
周りで互いに反対方向に回転する請求項３に記載の二珪
化モリブデン発熱体の自動成形法。4. When the molybdenum disilicide heating element reaches a predetermined upper limit temperature, the energization is stopped and the link member is pulled by a tension driving device, and when the molybdenum disilicide heating element lowers to the lower limit temperature, it is pulled. The operation of a drive device is stopped, electricity is supplied, it reheats to an upper limit temperature, a link drive member is pulled by a tension drive device, and a pair of tables rotate in a mutually opposite direction around a common support shaft. Automatic method for forming molybdenum disilicide heating elements.
珪化モリブデン発熱体をＵ字状に成形する請求項４に記
載の二珪化モリブデン発熱体の自動成形法。5. The method for automatically forming a molybdenum disilicide heating element according to claim 4, wherein the molybdenum disilicide heating element is molded into a U-shape by repeating the operation described in claim 4 a plurality of times.
動装置により、各テーブルに設けられたガイドレールに
沿ってクランプの位置を調節する過程を含む請求項３に
記載の二珪化モリブデン発熱体の自動成形法。6. The automatic molybdenum disilicide heating element according to claim 3, further comprising a step of adjusting the position of the clamp along a guide rail provided on each table by a clamp moving device mounted on each table. Molding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2227949A JPH0714604B2 (en) | 1990-08-31 | 1990-08-31 | Automatic molding device and method for molybdenum disilicide heating element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2227949A JPH0714604B2 (en) | 1990-08-31 | 1990-08-31 | Automatic molding device and method for molybdenum disilicide heating element |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04110104A JPH04110104A (en) | 1992-04-10 |
| JPH0714604B2 true JPH0714604B2 (en) | 1995-02-22 |
Family
ID=16868798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2227949A Expired - Fee Related JPH0714604B2 (en) | 1990-08-31 | 1990-08-31 | Automatic molding device and method for molybdenum disilicide heating element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0714604B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101628683B1 (en) * | 2015-08-31 | 2016-06-09 | (주)알루코 | bending machine of aluminium-bar have at least one bent surface and bending methods thereby |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0824961B2 (en) * | 1993-08-13 | 1996-03-13 | 日清紡績株式会社 | Method for bending thick plate metal |
| JP3876131B2 (en) | 2001-04-27 | 2007-01-31 | 日鉱金属株式会社 | MoSi2 arc heater and method and apparatus for manufacturing the same |
| JP2006086013A (en) * | 2004-09-16 | 2006-03-30 | Riken Corp | Molybdenum disilicide ceramic heating element and manufacturing method thereof |
| US7669452B2 (en) * | 2005-11-04 | 2010-03-02 | Cyril Bath Company | Titanium stretch forming apparatus and method |
| CN101590504B (en) | 2009-05-05 | 2012-05-23 | 西北工业大学 | Reinforced pull rod for large computer numerical control pipe bender |
| CN110315005B (en) * | 2019-08-08 | 2021-04-23 | 闽清紫扬信息技术有限公司 | A steel bar bending machine for engineering construction |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE420981B (en) * | 1976-09-03 | 1981-11-16 | Bulten Kanthal Ab | SET TO HEAT A REALLY STRAIGHT TRADEMARK |
-
1990
- 1990-08-31 JP JP2227949A patent/JPH0714604B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101628683B1 (en) * | 2015-08-31 | 2016-06-09 | (주)알루코 | bending machine of aluminium-bar have at least one bent surface and bending methods thereby |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04110104A (en) | 1992-04-10 |
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