JPH0117789B2 - - Google Patents
Info
- Publication number
- JPH0117789B2 JPH0117789B2 JP56137046A JP13704681A JPH0117789B2 JP H0117789 B2 JPH0117789 B2 JP H0117789B2 JP 56137046 A JP56137046 A JP 56137046A JP 13704681 A JP13704681 A JP 13704681A JP H0117789 B2 JPH0117789 B2 JP H0117789B2
- Authority
- JP
- Japan
- Prior art keywords
- base material
- mold
- molten metal
- roll
- layer
- 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
Links
- 239000000463 material Substances 0.000 claims description 49
- 239000002184 metal Substances 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 16
- 238000005096 rolling process Methods 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000010953 base metal Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 22
- 230000005674 electromagnetic induction Effects 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000005388 borosilicate glass Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000009970 fire resistant effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000006060 molten glass Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Description
【発明の詳細な説明】
本発明は条鋼用圧延ロールの製造方法、詳しく
は種々のカリバー形状を有する圧延用ロール母材
の外周に高周波誘導加熱を利用して所望材質の溶
湯を連続鋳かけ肉盛溶接し、形成された肉盛層を
旋削加工する条鋼用圧延ロールの製造方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a rolling roll for long steel, and more specifically, to continuously casting a molten metal of a desired material on the outer periphery of a rolling roll base material having various caliber shapes using high-frequency induction heating. The present invention relates to a method for manufacturing a rolling roll for long steel, which involves welding and turning the formed build-up layer.
条鋼用圧延ロールはその目的に応じて種々の形
状をしたカリバーが用いられるが、使用によつて
カリバー部分が摩耗するので、その摩耗の度合に
よつて旋削しサイズダウンして行くが、ある限界
径に至れば廃棄するのが通常である。 Calibers of various shapes are used for rolling rolls for long steel depending on the purpose, but as the caliber part wears out with use, it is turned and reduced in size depending on the degree of wear, but there is a certain limit. It is normal to discard it once it reaches the diameter.
本発明は、これらの使用済の廃棄ロールに耐摩
耗材を肉盛りして再生するか、または予め径小に
形成されたカリバー付ロール母材に耐摩耗材の溶
湯を連続鋳かけ肉盛溶接して使用径の新規条鋼ロ
ールを製造する方法を提供するものである。 The present invention involves regenerating these used discarded rolls by overlaying them with wear-resistant material, or continuously pouring molten metal of wear-resistant material onto a roll base material with a caliber that has been formed into a small diameter in advance and welding it overlay. The present invention provides a method for manufacturing a new long steel roll of a used diameter.
従来これら条鋼ロールの肉盛補修は溶加棒によ
る通常のアークまたはガス溶接による溶接肉盛法
か、特公昭45−29093号公報や特公昭53−12892号
公報に示す如く各カリバー毎に単独に鋳かけ肉盛
溶接する方法があるが、これらの方法は操作が極
めて煩雑であり効率が悪い。 Conventionally, overlay repair of these long steel rolls has been carried out by welding overlay using ordinary arc or gas welding using a filler rod, or individually for each caliber as shown in Japanese Patent Publication No. 45-29093 and Japanese Patent Publication No. 12892-1981. There are methods of overlay welding, but these methods require extremely complicated operations and are inefficient.
本発明者らはこれらの問題を解決し効率化をは
かる目的で、特公昭44−4903号公報や特公昭53−
47767号公報、更に改良を加えた特願昭55−
182903号（特公昭59−19786号公報）の発明によ
る連続鋳かけ肉盛溶接法を利用して種々の鋳かけ
肉盛条件を検討した結果、カリバー付ロール母材
の形状に応じて高周波電磁誘導コイルの印加電力
と母材の引抜き速度を調節することによりカリバ
ー形状に応じて一様に完全な溶着層を形成し得る
ことを見出し本発明に到達した。 In order to solve these problems and improve efficiency, the present inventors published Japanese Patent Publication No. 44-4903 and Japanese Patent Publication No. 53-49
Publication No. 47767, further improved patent application 1983-
As a result of studying various cast overlay conditions using the continuous cast overlay welding method invented in No. 182903 (Japanese Patent Publication No. 59-19786), we found that high-frequency electromagnetic induction The present invention was achieved by discovering that by adjusting the applied power to the coil and the drawing speed of the base material, it is possible to uniformly form a complete weld layer depending on the shape of the caliber.
即ち、本発明は「条鋼用圧延ロールのカリバー
形状に応じて予め径小に形成された溝付ロール母
材を準備する工程と、電磁誘導加熱コイルで、外
包された耐火性加熱型および下部に冷却型が配置
された緩衝型を一体に重ねた組合せモールドの内
部に前記母材を同心直立に挿入し、これらで画成
された環状空隙部に別に準備した所望材質の溶湯
を注入すると同時に前記母材を、断続的に降下さ
せ、溶湯を前記母材の溝を含めて全表面に一様に
溶着させながら冷却凝固させて、外表面が円柱状
の肉盛層を形成する工程と、前記母材の溝とほぼ
相似形に前記圧延ロールのカリバーを形成するよ
うに前記肉盛層を旋削加工する工程と、からなる
条鋼用圧延ロールの製造方法」である。 In other words, the present invention involves the process of preparing a grooved roll base material that is preformed to a small diameter in accordance with the caliber shape of a rolling roll for long steel, and an electromagnetic induction heating coil that is used to heat the enclosed fire-resistant heating mold and the lower part. The base material is inserted concentrically and upright into a combination mold in which a buffer mold in which a cooling mold is arranged is stacked together, and a separately prepared molten metal of a desired material is injected into the annular cavity defined by these. A step of lowering the base material intermittently to uniformly weld the molten metal to the entire surface of the base material including the grooves and cooling and solidifying the base material to form a built-up layer having a cylindrical outer surface; and a step of turning the built-up layer so as to form the caliber of the roll in a shape substantially similar to the grooves of the base material.''
以下本発明による条鋼用圧延ロールの製造方法
の実施例について図面を参照して説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the method for manufacturing a rolling roll for long steel according to the present invention will be described below with reference to the drawings.
第１Ａ図及び第１Ｂ図は本発明方法によつて製
造されたダイヤモンド型カリバーロールの例を示
す正面図であつて、１は本発明方法によつて完成
された条鋼用圧延ロールであり、２は鋳かけ肉盛
りするための溝付ロール母材であつて、条鋼用圧
延ロール１のカリバー３の形状に応じて予め径小
に形成されており、そのロール母材の表面に肉盛
層即ち溶着層４がある。ロール母材２は鉄基合
金、例えば鋳鉄、鋼などの安価な材質のものを用
いることができる。肉盛りする所望材質は高炭素
合金鋼例えば、アダマイト系材質を用いることが
できる。 1A and 1B are front views showing an example of a diamond-shaped caliber roll manufactured by the method of the present invention, in which 1 is a rolling roll for long steel completed by the method of the present invention, 2 is a grooved roll base material for overlaying, and is previously formed to have a small diameter according to the shape of the caliber 3 of the rolling roll 1 for long steel, and has a built-up layer, that is, a welding layer, on the surface of the roll base material. There is a welding layer 4. The roll base material 2 can be made of an inexpensive material such as an iron-based alloy, for example cast iron or steel. The desired material for overlaying may be high carbon alloy steel, for example, adamite material.
第２図は本発明方法を実施するための概略装置
図であつて、第３図は連続鋳かけ肉盛溶接された
ロール母材の状態、第４図は鋳かけ肉盛溶接され
た肉盛溶着層を旋削加工した状態を示す。 Fig. 2 is a schematic diagram of an apparatus for carrying out the method of the present invention, Fig. 3 shows the state of the roll base material subjected to continuous cast overlay welding, and Fig. 4 shows the overlay after cast overlay welding. The weld layer is shown after being turned.
第２図に示される装置は、テーパ部および平行
部の周壁を有するほぼロート状の耐火性加熱型５
を有し、それを外包するように環状の主電磁誘導
加熱コイル６が配置され、その下部に加熱型５と
同軸にしてしかも加熱型５の下部と同径の内孔を
有する環状の黒鉛系緩衝型７が置かれ、さらにそ
の下部には同軸にしてしかも黒鉛系緩衝型７の内
径より若干大きめの内径を有する環状の中空式冷
却型８が配置され、冷却水を循環させるための入
口配管および出口配管が設けられており、加熱型
５、緩衝型７および冷却型８が一体に重ねられた
組合せモールドを構成し定位置に固定されてい
る。また耐火性加熱型５の上方には、前述の溝付
ロール母材２の外周面を外包するように環状の予
熱用電磁誘導加熱コイル９が配置されている。主
電磁誘導加熱コイル６および予熱用電磁誘導加熱
コイル９には、それぞれ図示していない電源から
高周波あるいは低周波の電流が供給されるように
なつている。ロール母材２の下端は母材２に対す
る所定の肉盛層の外径とほぼ同径の外径を有する
閉止部材１０によつて固定され、さらにその下面
に一部図示した接近離隔機構１１が取付けられ
て、母材２は組合せモールドの中に同心垂直に挿
入され、接近離隔機構１１によつて上昇下降させ
るようになつている。 The apparatus shown in FIG.
An annular main electromagnetic induction heating coil 6 is disposed so as to enclose it, and an annular graphite-based heating coil 6 is disposed at the bottom thereof and is coaxial with the heating mold 5 and has an inner hole having the same diameter as the lower part of the heating mold 5. A buffer mold 7 is placed, and an annular hollow cooling mold 8 that is coaxial and has an inner diameter slightly larger than the inner diameter of the graphite buffer mold 7 is placed below it, and an inlet pipe for circulating cooling water. A heating mold 5, a buffer mold 7, and a cooling mold 8 are stacked together to form a combination mold and are fixed in a fixed position. Moreover, an annular preheating electromagnetic induction heating coil 9 is arranged above the refractory heating mold 5 so as to enclose the outer peripheral surface of the grooved roll base material 2 described above. High-frequency or low-frequency current is supplied to the main electromagnetic induction heating coil 6 and the preheating electromagnetic induction heating coil 9 from a power source (not shown), respectively. The lower end of the roll base material 2 is fixed by a closing member 10 having an outer diameter that is approximately the same as the outer diameter of a predetermined build-up layer on the base material 2, and furthermore, an approach/separation mechanism 11, partially shown, is provided on the lower surface of the closing member 10. Once installed, the base material 2 is inserted concentrically and vertically into the combination mold and is adapted to be raised and lowered by the approach and separation mechanism 11.
次に溝付ロール母材２の外周に異種金属を鋳か
け肉盛りする場合、まず母材２の外周面にほうけ
い酸系のガラスからなる粉末のガラスコーテイン
グ材１２で被膜を形成しておき、組合せモールド
内にモールドと同軸になるように垂直に挿入し、
その下端は閉止部材１０に固定される。次いで主
電磁誘導加熱コイル６および予熱用電磁誘導加熱
コイル９を作動させるとともに冷却型８に冷却水
を供給する。次いで上記組合せモールドと母材２
の下端部との間の環状空隙の中に図示していない
溶湯供給機構から所望の肉盛り用金属からなる溶
湯１３を注入する。この注入された溶湯１３が冷
却型８により冷却されて固化し、母材２の下端部
に所定量の固化域を形成すると接近離隔機構１１
を作動させ閉止部材１０を断続的に降下させなが
ら通常の肉盛り作業にはいる。すなわち、注入さ
れた溶湯は緩衝型７によつて徐々に冷却された後
冷却型８によつて急速冷却されて固化するのであ
るが、溶湯１３は一度に少量宛注入するように
し、一方母材２は注入された溶湯の中で所定時間
保持したのち所定距離だけ降下させ、それと同時
に次の少量の溶湯を注入し、このような工程を繰
り返し行う。その間母材２は母材を外包するよう
に配置された予熱用電磁誘導加熱コイル９によつ
て予熱され、同時にガラスコーテイング材１２が
溶融焼成されて母材２の外周面が完全に清浄化さ
れる。 Next, when casting and overlaying a dissimilar metal on the outer periphery of the grooved roll base material 2, a coating is first formed on the outer periphery of the base material 2 with a powdered glass coating material 12 made of borosilicate glass. , insert vertically into the combination mold so that it is coaxial with the mold,
Its lower end is fixed to the closure member 10. Next, the main electromagnetic induction heating coil 6 and the preheating electromagnetic induction heating coil 9 are operated, and cooling water is supplied to the cooling mold 8. Next, the above combination mold and base material 2
A molten metal 13 made of a desired overlay metal is injected from a molten metal supply mechanism (not shown) into the annular gap between the lower end of the molten metal and the lower end of the molten metal. When the injected molten metal 13 is cooled and solidified by the cooling mold 8 and forms a solidified area of a predetermined amount at the lower end of the base material 2, the approach/separation mechanism 11
While operating the closing member 10 and lowering it intermittently, normal build-up work begins. In other words, the injected molten metal is gradually cooled by the buffer mold 7 and then rapidly cooled by the cooling mold 8 to solidify, but the molten metal 13 is poured in small amounts at a time, while the base material Step 2 is held in the injected molten metal for a predetermined time and then lowered by a predetermined distance, and at the same time, the next small amount of molten metal is injected, and this process is repeated. During this time, the base material 2 is preheated by the preheating electromagnetic induction heating coil 9 arranged so as to enclose the base material, and at the same time, the glass coating material 12 is melted and fired, and the outer peripheral surface of the base material 2 is completely cleaned. Ru.
このように清浄化された母材が加熱型５内部の
溶湯中に降下してくるのであるが、加熱型５の部
分においては溶湯は主電磁誘導加熱コイル６によ
つて加熱されると同時に電磁誘導撹拌が行はれて
おり、母材表面のガラス溶融被膜は溶湯によつて
洗われ、その他の不純物と共に溶湯表面に浮上し
清浄活性化した母材２の表面が溶湯と接触して完
全な溶着層を形成する。次いで緩衝型７の部分に
おいては加熱型５を通過してきた溶湯１３は、こ
の緩衝型が比較的熱伝導率の高い黒鉛系材質であ
るため、溶湯の熱を吸収して型との接触部分の温
度を低下させて半凝固層１４となり、次いで冷却
型８の部分においては緩衝型７を通過してきた半
凝固状態の溶湯が急激に冷却吸熱されて凝固層１
５となつて連続的に第３図に示すように外表面が
円柱状の鋳かけ肉盛り層が形成されるのである。
ついでそのロール母材２の溝とほぼ相似形に前記
圧延ロールのカリバーを形成するように第３図に
示される肉盛層を第４図に示すように旋削加工し
て完成ロールにするのである。 The base metal thus cleaned falls into the molten metal inside the heating mold 5. In the heating mold 5, the molten metal is heated by the main electromagnetic induction heating coil 6 and at the same time is electromagnetically heated. Induction stirring is being carried out, and the molten glass coating on the surface of the base material is washed by the molten metal, and it floats to the surface of the molten metal together with other impurities, and the cleaned and activated surface of the base material 2 comes into contact with the molten metal and is completely Form a welding layer. Next, in the buffer mold 7 part, the molten metal 13 that has passed through the heating mold 5 absorbs the heat of the molten metal and cools the part in contact with the mold, since this buffer mold is made of a graphite-based material with relatively high thermal conductivity. The temperature is lowered to form a semi-solidified layer 14, and then in the cooling mold 8, the semi-solidified molten metal that has passed through the buffer mold 7 is rapidly cooled and absorbed heat, forming a solidified layer 1.
As shown in FIG. 3, a cast overlay layer having a cylindrical outer surface is continuously formed.
Next, the built-up layer shown in FIG. 3 is turned as shown in FIG. 4 so as to form the caliber of the rolling roll in a shape that is almost similar to the grooves of the roll base material 2, thereby producing a finished roll. .
本実施例においてはダイヤモンド型カリバーロ
ールの製造方法を例示したが、本発明方法によつ
てボツクス型、スクエアー型、オーバル型、ラウ
ンド型等のカリバーロールを製造することもでき
る。本発明方法は前述のように構成されているの
で使用済の廃棄ロールに耐摩耗材を肉盛りして再
生するか、または予め径小に形成された溝付ロー
ル母材に耐摩耗材の溶湯を連続鋳かけ肉盛溶接し
て使用径の新規条鋼用圧延ロールを簡単な操作で
効率よく製造することができる。 In this embodiment, a method for manufacturing a diamond-shaped caliber roll is exemplified, but caliber rolls of box-type, square-type, oval-type, round-type, etc. can also be manufactured by the method of the present invention. Since the method of the present invention is configured as described above, a used discarded roll can be regenerated by being overlaid with wear-resistant material, or molten wear-resistant material can be continuously applied to a grooved roll base material that has been previously formed into a small diameter. Rolling rolls for new long steel of the used diameter can be manufactured efficiently by overlay welding with simple operations.
第１Ａ図及び第１Ｂ図は本発明方法によつて製
造されたダイヤモンド型カリバーロールの例を示
す正面図、第２図は本発明方法を実施するための
概略装置図、第３図は連続鋳かけ肉盛溶接された
ロール母材の状態を示す部分断面正面図、第４図
は鋳かけ肉盛溶接された肉盛溶着層を旋削加工し
た状態を示す圧延ロールの部分断面正面図であ
る。
１…圧延ロール、２…溝付ロール母材、３…カ
リバー、４…肉盛溶着層、５…加熱型、６…主電
磁誘導加熱コイル、７…緩衝型、８…冷却型、９
…予熱用電磁誘導加熱コイル、１０…閉止部材、
１１…接近離隔機構、１２…ガラスコーテイング
材、１３…溶湯、１４…半凝固層、１５…凝固
層、１６…フラツクス。
1A and 1B are front views showing an example of a diamond-shaped caliber roll manufactured by the method of the present invention, FIG. 2 is a schematic diagram of an apparatus for carrying out the method of the present invention, and FIG. 3 is a continuous casting FIG. 4 is a partially sectional front view showing the state of the roll base material subjected to overlay welding, and FIG. 4 is a partially sectional front view of the roll showing a state in which the overlay welded layer subjected to overlay welding has been turned. DESCRIPTION OF SYMBOLS 1... Rolling roll, 2... Grooved roll base material, 3... Caliber, 4... Welding overlay layer, 5... Heating type, 6... Main electromagnetic induction heating coil, 7... Buffer type, 8... Cooling type, 9
... Preheating electromagnetic induction heating coil, 10... Closing member,
DESCRIPTION OF SYMBOLS 11... Approach/separation mechanism, 12... Glass coating material, 13... Molten metal, 14... Semi-solidified layer, 15... Solidified layer, 16... Flux.
Claims (1)
予め径小に形成された溝付ロール母材を準備する
工程と；電磁誘導加熱コイルで外包された耐火性
加熱型および下部に冷却型が配置された緩衝型を
一体に重ねた組合せモールドの内部に前記母材を
同心垂直に挿入し、これらで画成された環状空隙
部に別に準備した所望材質の溶湯を注入すると同
時に前記母材に断続的に降下せしめ、溶湯を前記
母材の溝を含めて全表面に一様に溶着させながら
冷却凝固させて外表面が円柱状の肉盛層を形成す
る工程と；前記母材の溝とほぼ相似形に前記圧延
ロールのカリバーを形成するように前記肉盛層を
旋削加工する工程とからなることを特徴とする条
鋼用圧延ロールの製造方法。1. A step of preparing a grooved roll base material pre-formed to a small diameter according to the caliber shape of a rolling roll for long steel; The base material is inserted concentrically and perpendicularly into the combination mold in which buffer molds are stacked together, and a separately prepared molten metal of a desired material is injected into the annular cavity defined by these, and at the same time, the base material is intermittently injected into the mold. and cooling and solidifying the molten metal while uniformly welding it to the entire surface including the grooves of the base material to form a built-up layer having a cylindrical outer surface; substantially similar to the grooves of the base metal. A method for manufacturing a rolling roll for long steel, comprising the step of turning the built-up layer so as to form a caliber of the rolling roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13704681A JPS5838655A (en) | 1981-09-02 | 1981-09-02 | Production of rolling roll for bar steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13704681A JPS5838655A (en) | 1981-09-02 | 1981-09-02 | Production of rolling roll for bar steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5838655A JPS5838655A (en) | 1983-03-07 |
| JPH0117789B2 true JPH0117789B2 (en) | 1989-04-03 |
Family
ID=15189600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13704681A Granted JPS5838655A (en) | 1981-09-02 | 1981-09-02 | Production of rolling roll for bar steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5838655A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195713A (en) * | 2015-10-10 | 2015-12-30 | 高殿奎 | Method for liquid coating on solid-state cast-connected roller, die and hammer head |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62169706U (en) * | 1986-04-11 | 1987-10-28 | ||
| JP7015607B1 (en) * | 2020-04-01 | 2022-02-03 | 株式会社フジコー | Manufacturing method of sinter crushing teeth |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5919786A (en) * | 1982-07-21 | 1984-02-01 | Nippon Denso Co Ltd | Fluid flow rate control valve |
-
1981
- 1981-09-02 JP JP13704681A patent/JPS5838655A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5919786A (en) * | 1982-07-21 | 1984-02-01 | Nippon Denso Co Ltd | Fluid flow rate control valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105195713A (en) * | 2015-10-10 | 2015-12-30 | 高殿奎 | Method for liquid coating on solid-state cast-connected roller, die and hammer head |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5838655A (en) | 1983-03-07 |
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