JPH0234717B2 - HIFUKUYOSETSUBONOKANETSUKANSOHOHO - Google Patents
HIFUKUYOSETSUBONOKANETSUKANSOHOHOInfo
- Publication number
- JPH0234717B2 JPH0234717B2 JP15134882A JP15134882A JPH0234717B2 JP H0234717 B2 JPH0234717 B2 JP H0234717B2 JP 15134882 A JP15134882 A JP 15134882A JP 15134882 A JP15134882 A JP 15134882A JP H0234717 B2 JPH0234717 B2 JP H0234717B2
- Authority
- JP
- Japan
- Prior art keywords
- drying
- heating
- welding rod
- coating
- heated
- 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
- 238000001035 drying Methods 0.000 claims description 51
- 238000010438 heat treatment Methods 0.000 claims description 45
- 238000003466 welding Methods 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 13
- 238000007765 extrusion coating Methods 0.000 claims 1
- 239000011248 coating agent Substances 0.000 description 21
- 238000000576 coating method Methods 0.000 description 19
- 239000011247 coating layer Substances 0.000 description 10
- 238000001704 evaporation Methods 0.000 description 7
- 230000008020 evaporation Effects 0.000 description 7
- 230000005855 radiation Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005336 cracking Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000005493 welding type Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/404—Coated rods; Coated electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating Apparatus (AREA)
- Drying Of Solid Materials (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、芯線の外周に被覆剤を塗装押出機
により塗装してなる被覆溶接棒の加熱乾燥方法に
関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for heating and drying a coated welding rod, which is obtained by coating the outer periphery of a core wire with a coating agent using a coating extruder.
被覆溶接棒は、周知の通り、所定の長さに切断
された芯線の外周に、塗装押出機により被覆剤を
被覆し、その直後、乾燥炉などにより加熱乾燥
し、その後各種の検査を行うことにより溶接棒と
して完成される。
As is well known, coated welding rods are made by coating the outer periphery of a core wire cut to a predetermined length with a coating agent using a coating extruder, immediately after which it is heated and dried in a drying oven, etc., and then various inspections are performed. It is completed as a welding rod.
このような被覆溶接棒の製造過程において、重
要なことは、塗装直後の被覆剤の加熱乾燥技術で
あり、この乾燥を適格に行わなければ溶接棒に凹
み疵や割れが発生し、品質に多大の影響を与え
る。 In the manufacturing process of such coated welding rods, what is important is the heating and drying technology of the coating material immediately after coating.If this drying is not done properly, the welding rod will suffer from dents and cracks, which will greatly affect the quality. influence.
塗装直後の被覆溶接棒の加熱乾燥手段として
は、従来、以下の自動連続式乾燥法が提案されて
いる。 Conventionally, the following automatic continuous drying method has been proposed as a means for heating and drying a coated welding rod immediately after coating.
(1) 溶接棒をコンベアで移送しつつ、ガス、灯油
などの燃焼による高温の熱空気により加熱する
空気循環式乾燥法。(1) An air circulation drying method in which the welding rod is transported on a conveyor and heated with high-temperature hot air generated by combustion of gas, kerosene, etc.
(2) ガス炎又は電気ヒータに接触させながら加熱
する直火加熱式乾燥法。(2) A direct flame heating drying method in which the material is heated while being brought into contact with a gas flame or an electric heater.
ところが、これらの従来の乾燥法にあつては次
の問題点を残している。 However, these conventional drying methods still have the following problems.
即ち、前掲(1)，(2)の乾燥法では、あまり高温下
で加熱すると溶接棒の被覆剤表面が過剰加熱され
て被覆層が変色し、製造にばらつきが生じ、乾燥
歩留まりが低下する。その結果、上記(1)，(2)の従
来方法では、この歩留まりを低下させないで乾燥
するには、乾燥温度に限界があることとなり、乾
燥時間を短縮できず、溶接棒の生産能率を劣下さ
せていたばかりでなく、被覆剤の表面と内部との
温度勾配による被覆剤の凹み疵や割れが生ずるこ
とがしばしばあつた。 That is, in the drying methods (1) and (2) above, if the welding rod is heated at too high a temperature, the coating material surface of the welding rod will be overheated, the coating layer will change color, production will vary, and the drying yield will decrease. As a result, in the conventional methods (1) and (2) above, there is a limit to the drying temperature for drying without reducing the yield, making it impossible to shorten the drying time and reducing the production efficiency of welding rods. Not only that, the temperature gradient between the surface and the inside of the coating often caused dents and cracks in the coating.
そこでこれらの従来の問題点を解消できるよう
にした技術として、従来、特公昭48−24142号公
報に提案された発明がある。 As a technique for solving these conventional problems, there is an invention proposed in Japanese Patent Publication No. 48-24142.
この従来発明は、上記溶接棒の外部加熱乾燥の
欠点を改良するために、塗装直後の10％程度の含
有水分を有する被覆溶接棒を、加熱乾燥炉内にお
ける50〜180℃の熱空気中において、500〜
14000WaH／m2の赤外線輻射パワーによつて加熱
する方法であり、この公報には、該発明により乾
燥時間を短縮できるとともに、溶接棒の被覆層に
生じる亀裂や変色などの欠陥が極小となつたとの
説明がある。 In this conventional invention, in order to improve the drawbacks of external heating drying of welding rods, coated welding rods having a moisture content of about 10% immediately after coating are dried in hot air at 50 to 180°C in a heating drying oven. , 500～
This is a method of heating using infrared radiant power of 14,000 WaH/ m2 , and the publication states that this invention not only shortens the drying time but also minimizes defects such as cracks and discoloration in the coating layer of the welding rod. There is an explanation.
しかしながら、上記公報記載の発明においては
以下の問題点があつた。
However, the invention described in the above publication had the following problems.
一般に、被覆剤が塗布された直後の被覆溶接棒
を乾燥する場合は以下の条件が満足される必要が
ある。 Generally, when drying a coated welding rod immediately after coating with a coating material, the following conditions need to be satisfied.
乾燥中被覆層に割れが生じないこと。 No cracks should occur in the coating layer during drying.
被覆層に凹みが生じないこと。これが条件と
なるのは、塗装直後の溶接棒は固着剤として使
用される水ガラス中の水分を８〜10％程度その
被覆層中に含有していることから、その被覆層
部分は柔らかく、そのため乾燥炉内をチエーン
により搬送される際に自重によつて凹み易いか
らである。 No dents should occur in the coating layer. The reason for this condition is that the welding rod immediately after painting contains about 8 to 10% of the water in the water glass used as a sticking agent in its coating layer, so the coating layer part is soft. This is because they are likely to dent due to their own weight when being transported through a drying oven by a chain.
ところが前掲の条件ととは裏腹の関係にあ
る。即ち、割れを防ぐには低温で水分の蒸発速度
を遅くしてゆつくり乾燥することが望ましいが、
被覆層に凹みが生じないようにするには、棒表面
を高温で素早く硬化させる方が望ましい。 However, there is a contrary relationship to the above conditions. In other words, to prevent cracking, it is desirable to slow down the evaporation rate of water at low temperatures and dry slowly.
In order to prevent the formation of dents in the coating layer, it is preferable to harden the bar surface quickly at a high temperature.
これに対して、上記公報記載の発明は、水分の
蒸発速度を速くして乾燥時間を短縮することを主
たる目的としており、これを実現するために、水
分の多い溶接棒を雰囲気温度が50〜180℃程度に
コントロールされた乾燥炉内にコンベアで搬送
し、この炉内の熱空気中で赤外線輻射によつて乾
燥するようにしている。つまり上記公報記載の発
明は、水分の蒸発速度を速くして乾燥時間を短縮
しようとしているのであるから、上記との条
件を同時に満足させることはできない。従つてこ
の公報記載の発明では溶接棒の種類により、割れ
易いものについてはを防止する条件に重点をお
き、凹み易いものについてはを防止する条件に
重点をおくなどの方策をとらざるを得ず、結局
，の両方の問題を同時に解決することはでき
ない。 On the other hand, the invention described in the above-mentioned publication aims to shorten the drying time by increasing the rate of water evaporation. The material is conveyed by a conveyor into a drying oven controlled at about 180°C, and dried using infrared radiation in the hot air inside the oven. In other words, since the invention described in the above-mentioned publication attempts to shorten the drying time by increasing the rate of moisture evaporation, it is not possible to satisfy the above conditions at the same time. Therefore, in the invention described in this publication, depending on the type of welding rod, it is necessary to take measures such as placing emphasis on conditions to prevent breakage for those that break easily, and placing emphasis on conditions for preventing breakage for those that are easily dented. , after all, it is not possible to solve both problems at the same time.
なお、上記公報には、予め溶接棒を30〜50℃程
度に加熱した後、赤外線輻射法を適用すれば良好
な結果が得られるとの記載がある。この記載か
ら、この従来方法は、熱空気による加熱と、赤外
線輻射加熱とを同時に、又は熱空気加熱を輻射加
熱に先立つて施す方法であるといえるが、このよ
うに熱空気による予備加熱を施してもやはり上記
，を同時に解決することはできない。 Note that the above publication states that good results can be obtained by applying the infrared radiation method after previously heating the welding rod to about 30 to 50°C. From this description, it can be said that this conventional method is a method in which heating with hot air and infrared radiant heating are applied simultaneously, or hot air heating is applied prior to radiant heating. However, it is not possible to solve the above problems at the same time.
そこで本発明は、上述の従来の問題点を解決す
るためになされたもので、被覆層に乾燥割れ及び
自重による凹みのいずれも生じることのない被覆
溶接棒の加熱乾燥方法を提供することを目的とし
ている。 SUMMARY OF THE INVENTION The present invention was made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a method for heating and drying a coated welding rod that does not cause drying cracks or dents due to its own weight in the coating layer. It is said that
上記問題点の解決策として、本発明者は以下の
点を見い出した。即ち、塗装直後の棒の凹みを防
ぐには棒表面を素早く乾燥させ硬化してやればよ
いが、そのためには雰囲気温度を高くする必要が
ある。しかし、雰囲気温度を高くすると棒内部の
水分が蒸発し易い状態となり、乾燥が速すぎて割
れが生じる。従つて、この現象を是正するには棒
表面のみを硬化させ、かつ水分の蒸発を抑制して
乾燥速度を遅くすれば、凹みをなくするとともに
乾燥割れをも防止できることを知見した。
As a solution to the above problems, the present inventor discovered the following points. That is, in order to prevent the rod from becoming dented immediately after painting, it is sufficient to quickly dry and harden the surface of the rod, but for this purpose it is necessary to raise the ambient temperature. However, if the ambient temperature is raised, the moisture inside the rod will easily evaporate, causing the rod to dry too quickly and cracking. Therefore, it has been found that in order to correct this phenomenon, by hardening only the bar surface and slowing down the drying rate by suppressing moisture evaporation, it is possible to eliminate dents and prevent drying cracks.
そこで本発明は、まず、加熱乾燥炉の外部にお
いて室温雰囲気下で輻射加熱手段により加熱し、
しかる後乾燥炉内において加熱するようにした点
を特徴とする被覆溶接棒の加熱乾燥方法であり、
上述の公報記載の乾燥方法とは、炉外において輻
射加熱を施す点及びまず輻射加熱した後熱空気加
熱を施す点において異なつている。 Therefore, in the present invention, first, heating is performed by a radiation heating means in a room temperature atmosphere outside a heating drying oven.
A heating drying method for a coated welding rod, characterized in that the method is then heated in a drying oven,
The drying method described in the above-mentioned publication differs in that radiant heating is performed outside the oven and that radiant heating is first performed and then hot air heating is performed.
本発明に係る被覆溶接棒の加熱乾燥方法におい
ては、まず、乾燥炉の外部において輻射加熱する
ようにしたので雰囲気温度を上昇させることなく
加熱でき、これにより表面のみが硬化し、その結
果自重による凹みは生じにくくなる。また、炉内
での乾燥においては表面が硬化しているから、水
分の蒸発速度が遅くなり乾燥割れが発生すること
もない。
In the method of heating and drying coated welding rods according to the present invention, first, radiation heating is performed outside the drying oven, so heating can be performed without increasing the ambient temperature, and as a result, only the surface is hardened, and as a result, the Dents are less likely to form. Furthermore, since the surface is hardened during drying in the oven, the rate of water evaporation is slow and drying cracks do not occur.
以下、本発明を図示の実施例に基づき説明す
る。
Hereinafter, the present invention will be explained based on illustrated embodiments.
図面は、本発明の一実施例による加熱方法を実
施するための加熱乾燥装置の概念図である。図に
おいて、塗装押出機１と乾燥炉４との間にはコン
ベア２が約20ｍにわたつて配設されている。そし
てこのコンベア２の上方には約２ｍ間隔ごとに赤
外線ランプ３，３………が配設されている。 The drawing is a conceptual diagram of a heating drying apparatus for carrying out a heating method according to an embodiment of the present invention. In the figure, a conveyor 2 is disposed between a coating extruder 1 and a drying oven 4 over a length of approximately 20 m. Infrared lamps 3, 3, . . . are arranged above the conveyor 2 at intervals of approximately 2 m.
この実施例では、塗装押出機１により塗装され
た被覆溶接棒W1………Woは、チエンコンベア２
によつて約５ｍ／minの速度で乾燥炉４まで移送
される。そしてこの際に、各溶接棒は外気温度約
29℃程度の室温雰囲気下で赤外線ランプ３，３…
……によつて、予備輻射加熱される。 In this embodiment, the coated welding rod W 1 ...... W o coated by the coating extruder 1 is the chain conveyor 2
is transported to the drying oven 4 at a speed of about 5 m/min. At this time, each welding rod is placed at an outside temperature of approx.
Infrared lamps 3, 3 in a room temperature atmosphere of about 29℃...
Preliminary radiant heating is performed by...
この予備輻射加熱においては、雰囲気温度を上
げることなく被覆層の表面温度を上げることがで
き、これにより溶接棒の被覆層の表面が硬化する
ので、自重による凹みが生じることはない。また
この場合、室温雰囲気での加熱であるので、水分
の蒸発速度は遅く、従つてこの予備加熱において
割れが生じることもない。 In this preliminary radiation heating, the surface temperature of the coating layer can be raised without raising the ambient temperature, and as a result, the surface of the coating layer of the welding rod is hardened, so that dents due to its own weight do not occur. Further, in this case, since the heating is carried out in a room temperature atmosphere, the rate of moisture evaporation is slow, and therefore no cracking occurs during this preheating.
そしてこの予備加熱された溶接棒は、続いて乾
燥炉４内において50〜180℃の雰囲気温度下で加
熱乾燥される。この場合においても、棒表面が硬
化しているので、自重による凹みが生じることは
なく、かつ水分の蒸発速度が遅いので、乾燥割れ
が発生することもない。 The preheated welding rod is then heated and dried in the drying oven 4 at an ambient temperature of 50 to 180°C. Even in this case, since the rod surface is hardened, no dents will occur due to its own weight, and the rate of water evaporation is slow, so dry cracking will not occur.
なお、予備輻射加熱時間は、溶接棒の種類によ
つても異なるが、１分ないし10分程度が望まし
く、余り短時間であると溶接棒の表面を硬化させ
ることができず、長すぎると乾燥能率が低下す
る。 The pre-radiation heating time varies depending on the type of welding rod, but it is desirable to set it to about 1 to 10 minutes; if it is too short, the surface of the welding rod will not be hardened, and if it is too long, it will dry out. Efficiency decreases.
また、前記実施例における如く加熱源として赤
外線ランプ３，３………を適当間隔で複数個設置
するようにしたが、これの代替としては、チエー
ンコンベア２の上下箇所へ設置するようにしても
よく、また赤外線ランプ２の替りに電気ヒーター
を使用するようにしてもよい。 Further, as in the above embodiment, a plurality of infrared lamps 3, 3, etc. are installed as heating sources at appropriate intervals, but as an alternative to this, it is also possible to install them above and below the chain conveyor 2. Alternatively, an electric heater may be used instead of the infrared lamp 2.
本実施例による加熱乾燥は、以上のようにして
行われるが、この加熱乾燥法によれば、第１表に
示すように、被覆割れ、凹み疵の発生率０％とい
う顕著な結果が得られた。 The heating drying according to this example is carried out as described above, and as shown in Table 1, this heating drying method yields remarkable results with a 0% incidence of coating cracks and dents. Ta.
ここで、第１表の実施例において局所加熱条件
は以下の通りである。 Here, the local heating conditions in the examples shown in Table 1 are as follows.
コンベア長さ：20ｍ、室温：29℃
〃 速度：５ｍ／min
赤外線ランプ：コンベアに沿つて２ｍ間隔で１
個ずつ配置する。 Conveyor length: 20m, room temperature: 29℃ 〃 Speed: 5m/min Infrared lamp: 1 at 2m intervals along the conveyor
Place them one by one.
このように本実施例方法は、上述の公表記載に
方法が、炉内において熱空気加熱と輻射加熱とを
同時に施すか、又は熱空気による予備加熱を施し
た後炉内で輻射加熱を施すのと異なり、まず炉外
において輻射加熱を施した後、炉内で熱空気加熱
を施したので、棒表面を硬化させた後、低温でゆ
つくり乾燥させることが可能となり、上述の条件
，を同時に満足できる。 In this way, the method of the present example is different from the above-mentioned published description, either by applying hot air heating and radiant heating in the furnace at the same time, or by applying radiant heating in the furnace after preheating with hot air. Unlike conventional methods, radiation heating was first applied outside the furnace, and then hot air heating was applied inside the furnace, making it possible to harden the bar surface and then slowly dry it at a low temperature. Satisfied.
以上のように、本発明は、塗装押出機により塗
装された溶接棒を、まず乾燥炉へ入る前の炉外に
おいて、室温下で輻射加熱を行い、その後、乾燥
炉内で50〜180℃の温度で加熱乾燥するようにし
たので、塗装直後の溶接棒の乾燥初期に発生する
凹み疵及び乾燥割れを皆無とすることができる効
果がある。
As described above, in the present invention, a welding rod coated with a coating extruder is first subjected to radiant heating at room temperature outside the oven before entering the drying oven, and then heated at 50 to 180°C in the drying oven. Since the welding rod is heated and dried at a high temperature, it is possible to completely eliminate dents and drying cracks that occur in the early stages of drying the welding rod immediately after coating.
図面は、本発明の一実施例による被覆溶接棒の
加熱乾燥方法を説明するための概念図である。
図において、１は塗装押出機、２はチエーンコ
ンベア、３は赤外線ランプ（輻射加熱手段）、４
は乾燥炉、W1，Woは被覆溶接棒である。
The drawings are conceptual diagrams for explaining a method of heating and drying a coated welding rod according to an embodiment of the present invention. In the figure, 1 is a coating extruder, 2 is a chain conveyor, 3 is an infrared lamp (radiant heating means), 4
is a drying oven, and W 1 and W o are coated welding rods.
【表】【table】
Claims (1)
棒をコンベアなどの搬送手段により、50〜180℃
雰囲気下にある加熱乾燥炉内へ移送し、該炉内で
適当時間加熱乾燥する被覆溶接棒の加熱乾燥方法
において、前記搬送手段にて移送される被覆溶接
棒を、まず、前記加熱乾燥炉の外部に設置した赤
外線ランプなどの輻射加熱手段により室温雰囲気
下にて輻射加熱し、しかる後乾燥炉内に移送して
加熱するようにしたことを特徴とする被覆溶接棒
の加熱乾燥方法。1. The coated welding rod immediately after being coated with an extrusion coating machine is heated to 50 to 180℃ using a conveyor or other conveyance means.
In a method of heating and drying a coated welding rod, the rod is transferred to a heating and drying furnace in an atmosphere and is heated and dried in the furnace for an appropriate period of time. A method for heating and drying a coated welding rod, characterized in that it is radiantly heated in a room temperature atmosphere using a radiant heating means such as an infrared lamp installed outside, and then transferred to a drying oven and heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15134882A JPH0234717B2 (en) | 1982-08-30 | 1982-08-30 | HIFUKUYOSETSUBONOKANETSUKANSOHOHO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15134882A JPH0234717B2 (en) | 1982-08-30 | 1982-08-30 | HIFUKUYOSETSUBONOKANETSUKANSOHOHO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5956998A JPS5956998A (en) | 1984-04-02 |
| JPH0234717B2 true JPH0234717B2 (en) | 1990-08-06 |
Family
ID=15516595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15134882A Expired - Lifetime JPH0234717B2 (en) | 1982-08-30 | 1982-08-30 | HIFUKUYOSETSUBONOKANETSUKANSOHOHO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0234717B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990068663A (en) * | 1999-06-09 | 1999-09-06 | 이근원 | Apparatus for automatically coating fishing rod |
| CN102829614B (en) * | 2012-09-20 | 2015-04-29 | 天津市永昌焊丝有限公司 | Welding rod drying equipment used for manufacturing electrode rods |
| US9700956B2 (en) | 2013-02-06 | 2017-07-11 | Hobart Brothers Company | Welding electrode storage system and method |
| US9623510B2 (en) * | 2013-03-04 | 2017-04-18 | Hobart Brothers Company | Integrated electrode dryer |
| CN108044260B (en) * | 2017-12-11 | 2021-08-24 | 江苏九洲新材料科技有限公司 | Preparation method of surfacing welding electrode |
| US11660709B2 (en) | 2020-06-08 | 2023-05-30 | Zhengzhou Research Institute Of Mechanical Engineering Co., Ltd. | Device and method for manufacturing coated welding rod |
-
1982
- 1982-08-30 JP JP15134882A patent/JPH0234717B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5956998A (en) | 1984-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH01212886A (en) | Drier for plate for building | |
| JPH0234717B2 (en) | HIFUKUYOSETSUBONOKANETSUKANSOHOHO | |
| EP0021183B1 (en) | Ceramic material processing | |
| SE7708799L (en) | PROCEDURE AND APPARATUS FOR DRYING INCLUSIVE MOLDS | |
| US3847202A (en) | Microwave dewaxing | |
| US2595411A (en) | Method of removing oxides, oils, and grease from an uncoated metal article | |
| JP2007230796A (en) | Method of manufacturing ceramic and ceramic firing furnace | |
| CS215851B1 (en) | Method of heat treating ceramic semifinished products | |
| JPH10265280A (en) | Production of ceramic product | |
| JP3235887B2 (en) | Drying method for moisture content | |
| SU1560623A1 (en) | Method of firing silicate coatings on metal pipes | |
| JPS6040695A (en) | Production of coated arc welding rod | |
| JPS5946712A (en) | Method of baking enameled wire | |
| JPH0657618B2 (en) | Manufacturing method and equipment for ceramic products | |
| US1604823A (en) | Method and apparatus for flattening sheet glass | |
| JPS6333957B2 (en) | ||
| JPS63282279A (en) | Method and furnace for baking enamel of aluminum plated enameled steel sheet | |
| SU620769A1 (en) | Device for drying and heat treatment of coatings on ferromagnetic rods | |
| JPH02160336A (en) | Fluorescent lamp manufacturing device | |
| SU1033111A1 (en) | Method of producing green baichovy tea | |
| SU358832A1 (en) | ||
| JPS5848230B2 (en) | Transfer method of resin coated steel pipe | |
| SU252155A1 (en) | METHOD OF HEAT TREATMENT OF HEATED PRODUCTS FROM HEAT-RESISTANT CONCRETE | |
| JPS60230939A (en) | Method and apparatus for direct softening heat treatment of rolled wire material | |
| JPH10202645A (en) | Device for continuously manufacturing ceramic plate |