JPS59203674A - In-oven soldering-coating method for steel material such as mild or alloyed steel - Google Patents

Abstract

PURPOSE:To contrive the rationalization of a process and equipment, the improvement of productivity, labor and energy saving and the curtailment of a cost, by cooling an in-oven soldered steel material in an oven, charging it in an applicator area directly connected to the oven, and performing application utilizing the latent heat of the steel material. CONSTITUTION:A steel material, e.g. mild or alloyed steel, mounted on a conveyer 6 is passed through a soldering oven 1 comprising a workpiece charging chamber 2, a preheating oven 3, a heating oven 4 and an in-oven cooling chamber 5. Hereon, a solder interposed in a pasty state at the joint of the steel material is melted by heating the steel material at 800-1,200 deg.C in the oven 4 to perform in-oven soldering. Thereafter, the steel material is in-oven cooled in the chamber 5 equipped with cooling pipes 502..., discharged in a discharging chamber 504 by opening a shutter 503 and then charged in an applicator device 7 at the downstream side of a communicating chamber 506 to perform application utilizing the latent heat of the steel material. Then, the coating film is baked in a baking oven 706 inside the device 7.

Description

【発明の詳細な説明】[Detailed description of the invention]

本発明は軟鋼や合金鋼等の鋼材を炉中ろう付し、連続し
て塗装を行うようにした方法に関するものである。 軟鋼や合金鋼等の鋼材の炉中ろう付け、変成ガス、分解
アンモニアガス等を炉中雰囲気として用い、８００Ｃ〜
１２００Ｃに加熱してろう付処理し、爾後炉内や大気中
で常温迄放置することが行われる。 かかるろう付処理品を塗装する場合には脱脂、洗浄、更
には化成処理を行ってからワークを予熱して塗装を行っ
ている、 かかる従来の塗装法は、塗装前処理装置やワークの予熱
装置等の設備を要し、設備そのものが高価The present invention relates to a method in which steel materials such as mild steel and alloy steel are brazed in a furnace and painted continuously. Furnace brazing of steel materials such as mild steel and alloy steel, using metamorphic gas, decomposed ammonia gas, etc. as the furnace atmosphere, 800C ~
It is heated to 1200C for brazing treatment, and then left to stand in a furnace or in the atmosphere until room temperature. When painting such brazed products, the workpiece is preheated and painted after degreasing, cleaning, and further chemical conversion treatment.This conventional painting method requires a pre-painting treatment device or a workpiece preheating device. etc., and the equipment itself is expensive.

【なると同時
に生産性が低いという不都合がある。 本発明は以上を改善すべくなされたもので、その目的と
する処は、炉中ろう付、塗装を一貫して連続して行うよ
うにし、塗装前処理工程、設備の省略による合理化、生
産性の向上、省力化、省エネルギー、コストダウンを図
り、特に炉中ろう付の熱を有効に利用するようにした軟
鋼や合金鋼等の／Ａ４３の炉中ろう付塗装方法を提供す
るにある。 以」二の目的を達成するため本発明ｃ１、炉中ろう側さ
れたワークを炉冷し、炉に直結きれた塗装エリアに搬入
し、ワークの潜熱を利用して塗装を行うようにしたこと
をその要旨とする。 次に本発明の好適一実施例を添付図面に従って詳述する
。 本発明に用いられる鋼イ２は軟銅や合金鋼：で、実施例
は合金鋼を用い、これを炉中ろう句する。 ろう付は銅ろう、銀ろう等のろう材を銅相の接合部にペ
ースト状等に介在印せ、これを加熱炉に投入し、変成、
カスや分触アンモニアガス等の雰囲気中てろう相に応じ
て８００Ｕ−１２００１Ｃ迄加熱し、ろう材を溶徹芒ぜ
てろう（＝Ｊする。 ８００Ｕ〜１２００Ｃでろう例加熱処理芒れたワークは
、かかる加熱工程を経ることにより表面に４＝Ｊ宸して
いるＩＩ’）ｊ錆油、プレス油等の有供物質は分解燃７
％ｌｊ　Ｌ、ワーク表面はクリーニング作用によ’）　
？ｉ！ｉ浄化されることとなる。 かかるワークを４００Ｃ〜２００Ｕに炉冷し、次いでワ
ークの温度を２００Ｕ〜１００Ｕ　Ｋ調整した後塗装室
に搬送し、粉体塗才」をワークに吹き刊けて塗装する。 ワークの」二記２００Ｃ〜］、００Ｃの温度は粉体塗゛
料により設定でれ、塗料の溶融、ｌＩやＪ化点温度に設
定し、かかるワ〜りの炉中ろう句後の潜熱により、塗料
粒子はワーク表面に付着後溶融し、溶融付着して塗膜を
形成し、塗装を行うことができる。かかる塗装後セツテ
ィング室で保温し、塗料粒子の水分を除去し、爾後焼句
炉に搬送して焼付を行い、かくして防剤、外観性向上の
ための塗装が完了する。 以上の如くであるから、塗装前処理を必要とセす、従っ
て塗装前処理の設備、前処理用加熱設備等を必要とせす
、設備的に、コストの点でも、又省力化の点ても極めて
有利であるＪ特に炉中ろう付から塗装迄連続して一貫処
理するため、設備的に有利であり、又ワークの炉中ろう
イ」後の熱を第１」用して塗装を行うため塗装用予熱設
備を必要とせす、合理的に、効率良く炉中ろう付、塗装
が行え、生産性向」二、コストダウンの点でイ：ｉ利で
ある。史にワークの潜熱を利用するため塗料粒子がワー
クに溶融料理し、従って焼句炉の長さ、炉藝量を大幅に
縮少することができ、又塗装室、セソテインク′・ｌ（
の保４１．１＋、か１１、イ・」炉の加熱筒に炉中ろう
イマ］のＪＪＩえヅ；カスをオ］１用できるため省エイ
・ルキー上も有利である。 次に第２実が１１例を説明すると、炉中ろうイＮで加熱
烙わ、たワークを４００Ｃ〜１００Ｃに炉冷し、次いて
ワーク温度を８０１Ｃ〜３０Ｃに設定し、−万、塗装室
の吹イ・↑Ｈ，′１の雰囲気を４０′Ｃ〜５０ＣＶＣ？
Ｆ＋ｉＬ持し、水分散系塗料を吹き付は塗装する。この
ようにワークの潜熱を利用して水分散系塗料、即ち液状
の塗装′−Ｌを吹イス１塗タ：シ、爾後ゆ７７　（＝Ｊ
を行い、塗装品をイ÷する。 以上においで（ｓ　ｉ５’ｌ＋記の如き効果をモする。 次に上記方法を火旗するための具体的装置の一例を図１
π１に従って詳述する。。 ろう細か１は上流からワーク投入室２、これに埋ｈｉ’
、　した〕−熱力・・３、これに連続した加熱ター′４
、更にけこれに連続した炉冷室５を備える。これらの各
エリアを連通ずるコンベヤ６をイ＋ｉｊ；　エ、コンベ
ヤ６汀動輪６０１、カイト輪６０２　等で、駆動σれ２
０２をイＩｉｉ＋えてこの下流のイ、１ｊ′林・雀２０
３と外）η１５とを区画し、入口部２０１からコンベア
６の最上流部にワークを投入し、ワークを待機室２０３
に搬送する。待機室２０３と予熱炉３の上流部との間に
はシャッタ２０５が設けられ、予熱炉３の炉体３０１の
天井及び床にはヒータ３０２・・か設けられ、又炉３内
には変成カスや分解アンモニアカス等の変成ガスを内部
に導入するための導％３０３を臨１ぜ、炉内を無敵化雰
囲気に保持する。ンヤソク２０５を開いてコンベア６て
悄桜呈２０３からワークを炉内に送り込み、該ｇ３３内
でワークを予熱する。 予熱炉３に連通隣接する加熱炉４の炉体４０１は天井及
び床にヒータ４０２・・を備え、天井には導省４０３を
辿して前記ガスを炉内に導入する。 かがる予熱炉で予熱したワークを加熱炉４に移送し、こ
こで８００Ｃ〜１２００Ｃに加熱し、炉中ろう伺を行う
。かかるろう付加熱工程でワークの表面に既述の如く清
浄化される。 加熱炉４に隣接して設けられた炉冷室５の炉体５０１の
天井３１５　Ｋは冷却パイプ５［１２・・・が配設され
、コンベヤ６で加熱炉４から送られてきたろうイボ後の
ワークを冷却する。ここでワークを第１実施例に従えは
２００Ｃ近く迄冷却降温し、かかる炉冷室５の下流部に
はシャンク５０３ｆ：備える。 炉冷室５のシャッタ５０３で区画−される下流（ｉｌｌ
ｊにはコンベヤ６の最下流部Ｉ、に臨む排出室５０４を
画１ｊ、ＷＬ、、排出室５０４は天井部に排熱カス排出
部５０５を設け、かかるわト出室５０４の下部にはダク
ト状連通￥５０６が設けられる。 連通室５０６の下流にげ塗装装置７が設けられ１、装置
７に連通室５０６下流に直結された吊」」、１シー７７
０１、これの下流てｌ！Ｊｆ援する塗装室７０２、これ
の下流に設けられ、塗装室７０２と連通室７０３を弁じ
て連通ずるセツティング室７０４、連通前１（７Ｄ　５
を介して該室７０４に連通する如く設けられた最下流の
焼＋］炉７０６からなり、実施例では連通室５０６の床
上から室７０１’、７０２７０３．７０４．７０５を経
て焼付炉７０６にいたる迄床上にコンベヤ８が設けられ
、コンベヤ８は最上流部８０１がコンベヤ６の最下流部
６０３の下方に位置し、炉中ろう伺てれ、降温σれたワ
ークをコンベヤ６から８へ受は涙゛す如く構ｌ或σれて
いる。又実施例では塗装室７０２の天井から吊掛コンベ
ヤ９が導入され、コンベヤ９け下流の室７０３．７０４
，７０５．７０６の天井下を辿って外部に導出きれ、コ
ンベヤは８又は９の一例でも良く、９のみの場合にはコ
ンベヤ６とコンベヤ９との間の受は渡し用コンベヤが必
要であろう。 以上により投入室２０１がら投入したワークは予熱炉３
で予熱はれ、加熱炉４でろう付処理芒ゎ１、炉冷室５で
既述の如く冷却降温され、コンベヤ６から８に受は渡は
ね一１吊壮１ゾーン７０１で吊掛コンベヤ９に渡され、
粉体塗装等を行い、次いてセツティング室７０４で保持
し、焼句炉７０６で焼付られ、炉外に搬出づれる。 ところで排出室５０４の天井に設けた排出部５０５にパ
イプ１０の上流部１０１を接続し、本省１０２に分岐管
１（１３，１０４を設け、これをセツティングイ１７０
４、焼付）’）”　７０６に接続し、杖熱をこわ、らの
室に導入し、熱再利用を行い、省エネルキーを１スる」
二うにした。 以上で明らかな如く本発明によれは、炉中ろう付、４装
を一員して連続して行い、塗装前処理工程の省略による
合理化、設備の省略、効率的な処ｔ４Ｆ：　、生産性の
向上、省力化を１ンすることがでさ、又炉中ろうイづの
熱エイ・ルキーを有効にＡ：：」用し得て名工不ルキー
」−も不利であり、コストタウンの点でもイｊ利である
他、粉体架装をＵ１月］した場合には全−Ｃドラインス
テムで処理でき、ｇ」Ｊλ上も有利であり、処理制御り
ｊも？ギ易である等多大の３−１」点をイ】する。 ・１　図面のｆｆ１ｊ単な血り」 ；ス１面（６本ざε明方法を実施するブζめの具体的装
置の一例を示す説［ｙ」図である。 尚［ン１血中１（ハ）ろうイ」炉、４に加熱炉、７は塗
装ン！：”　ｊ＋’ｒ、である。[At the same time, there is the disadvantage that productivity is low. The present invention has been made to improve the above-mentioned problems, and its purpose is to perform furnace brazing and painting consistently and continuously, streamlining and improving productivity by omitting the painting pre-treatment process and equipment. To provide a furnace brazing coating method for /A43 of mild steel, alloy steel, etc., which aims to improve the performance, save labor, save energy, and reduce costs, and in particular effectively utilizes the heat of furnace brazing. In order to achieve the second object, the present invention (c1) is to cool the workpiece that has been soldered in the furnace, transport it to a coating area directly connected to the furnace, and paint using the latent heat of the workpiece. The gist is: Next, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. The steel 2 used in the present invention is annealed copper or alloy steel. In the embodiment, alloy steel is used, and it is heated in a furnace. For brazing, a brazing material such as copper solder or silver solder is applied to the joint of the copper phase in the form of a paste, etc., and this is placed in a heating furnace to undergo metamorphosis,
Heat the brazing material to 800U-12001C depending on the wax phase in an atmosphere of scum, catalyzed ammonia gas, etc. By going through such a heating process, materials such as rust oil and press oil that are on the surface are decomposed and burned.
%lj L, work surface is due to cleaning action')
? i! i will be purified. The workpiece is cooled in a furnace to 400C to 200U, and then the temperature of the workpiece is adjusted to 200U to 100UK, and then transported to a coating room, where the workpiece is sprayed with a powder coater and coated. The temperature of the workpiece (200C ~) is set by the powder coating, and the temperature is set at the melting point of the coating, 1I and J temperature, and the latent heat after waxing in the furnace of such a work causes After adhering to the surface of the workpiece, the paint particles melt, form a coating film by melting and adhering, and can be painted. After such painting, the paint particles are kept warm in a setting room to remove moisture from the paint particles, and then transported to a baking oven for baking, thereby completing the painting for preventing chemicals and improving appearance. As described above, pre-painting treatment is required, and therefore, pre-painting treatment equipment, pre-treatment heating equipment, etc. are required, which is important in terms of equipment, cost, and labor saving. It is extremely advantageous in terms of equipment, as it is a continuous process from furnace brazing to painting, and it is also advantageous in terms of equipment, as the heat after the work is brazed in the furnace is used for painting. This method eliminates the need for preheating equipment for painting, allows for rational and efficient furnace brazing and painting, and is advantageous in terms of productivity and cost reduction. Since the latent heat of the workpiece is utilized, the paint particles melt and cook on the workpiece, which makes it possible to significantly reduce the length of the burner and the amount of burner.
It is also advantageous in terms of saving energy and energy, since it is possible to use the wax in the furnace for the heating cylinder of the furnace. Next, the second example explains 11 examples. The workpiece is heated in a furnace with wax N, cooled in the furnace to 400C to 100C, and then the workpiece temperature is set to 801C to 30C. The atmosphere of blowing ↑H,'1 is 40'C~50CVC?
Hold F+iL and spray paint with water dispersion paint. In this way, the latent heat of the workpiece is used to spray water-dispersed paint, i.e., liquid paint '-L, with one coater: Shi, then Yu77 (=J
and then clean the painted item. In the above, we will demonstrate the effects as described in (s i5'l+).
The details will be explained according to π1. . The wax wire 1 is buried in the workpiece input chamber 2 from upstream.
, did] - thermal power...3, followed by a continuous heating ter'4
Furthermore, a continuous furnace cooling chamber 5 is provided. The conveyor 6 that connects each of these areas is driven by a driving wheel 601, a kite wheel 602, etc.
Add 02 to Iiii + this downstream A, 1j' Hayashi Suzume 20
3 and outside) η15, and input the workpiece from the entrance part 201 to the most upstream part of the conveyor 6, and transfer the workpiece to the waiting room 203.
Transport to. A shutter 205 is provided between the standby chamber 203 and the upstream part of the preheating furnace 3, heaters 302, etc. are provided on the ceiling and floor of the furnace body 301 of the preheating furnace 3, and metamorphic scum is placed inside the furnace 3. The inside of the furnace is maintained in an invincible atmosphere while the introduction of % 303 for introducing transformed gases such as decomposed ammonia gas and decomposed ammonia scum into the furnace is carried out. The workpiece 205 is opened and the conveyor 6 sends the workpiece from the furnace 203 into the furnace, and the workpiece is preheated in the furnace g33. A furnace body 401 of a heating furnace 4 adjacent to and in communication with the preheating furnace 3 is equipped with heaters 402 on the ceiling and floor, and the gas is introduced into the furnace by following a guide 403 on the ceiling. The workpiece preheated in the preheating furnace is transferred to the heating furnace 4, where it is heated to 800C to 1200C and brazed in the furnace. In this brazing heat process, the surface of the workpiece is cleaned as described above. The ceiling 315K of the furnace body 501 of the furnace cold chamber 5 provided adjacent to the heating furnace 4 is provided with cooling pipes 5 [12... Cool the workpiece. Here, according to the first embodiment, the workpiece is cooled down to nearly 200C, and a shank 503f is provided at the downstream part of the furnace cold chamber 5. The downstream (ill) sectioned by the shutter 503 of the furnace cold chamber 5
A discharge chamber 504 facing the most downstream part I of the conveyor 6 is shown in the drawing 1j, WL, and the discharge chamber 504 is provided with an exhaust heat waste discharge part 505 on the ceiling, and a duct is installed in the lower part of the waste discharge chamber 504. A fee of ¥506 will be provided. A coating device 7 is provided downstream of the communication chamber 506, and a hanging device 7 is directly connected to the device 7 downstream of the communication chamber 506.
01, downstream of this! A painting room 702 supporting JF, a setting room 704 installed downstream of this and communicating with the painting room 702 and communication room 703, and a setting room 704 in front of the communication room 1 (7D 5
It consists of the most downstream baking furnace 706 installed so as to communicate with the chamber 704 through the chamber, and in the embodiment, from the floor of the communication chamber 506 to the baking furnace 706 via the chambers 701', 702,703, 704, and 705. A conveyor 8 is provided on the floor, and the most upstream part 801 of the conveyor 8 is located below the most downstream part 603 of the conveyor 6. It is structured as follows. In addition, in the embodiment, a hanging conveyor 9 is introduced from the ceiling of the painting room 702, and the rooms 703 and 704 downstream of the conveyor 9 are installed.
, 705, 706 under the ceiling to the outside, and the conveyor may be an example of 8 or 9. If only 9 is used, a transfer conveyor will be required for the receiver between conveyor 6 and conveyor 9. . As a result of the above, the workpieces charged from the charging chamber 201 are transferred to the preheating furnace 3.
It is preheated in the heating furnace 4, brazed in the heating furnace 4, cooled and lowered in temperature in the furnace cold room 5 as described above, and transferred to the conveyors 6 to 8. passed to 9,
After applying powder coating, etc., it is held in a setting chamber 704, burned in a burner oven 706, and then transported out of the oven. By the way, the upstream part 101 of the pipe 10 is connected to the discharge part 505 provided on the ceiling of the discharge chamber 504, and the branch pipe 1 (13, 104 is provided in the main part 102), and this is connected to the setting point 170.
4. Connect to 706, introduce heat from the wand into the room, reuse the heat, and press the energy saving key.
I made two. As is clear from the above, according to the present invention, brazing in the furnace and four mountings are carried out in succession, streamlining by omitting the painting pre-treatment process, omitting equipment, and efficient processing T4F: , Productivity is improved. It is possible to improve the heat efficiency and save labor, and it is also disadvantageous in terms of cost and cost. In addition to being advantageous, if powder mounting is used, it can be processed with an all-C dry stem, which is also advantageous in terms of g'Jλ, and processing control is also possible. It is easy to play, etc., and scores 3-1.・1 drawing ff1j simple blood; 1st page (this is a diagram showing an example of a concrete device for carrying out the 6-thread method. (c) ``Roi'' furnace, 4 is a heating furnace, 7 is painting!: ``j+'r,''.

Claims (1)

【特許請求の範囲】 １　軟鋼、合金鋼等の鋼材をｓｏｏ　ｃ〜１２００ｃに
加熱して炉中ろう付し、該処理後炉冷し、次いで炉に直
結ざ′Ｆ１．た塗装エリアに直接搬入して鋼材の潜熱を
利用して塗装を行うようにしたことを特徴とする軟鋼、
合金鋼等の銅相の炉中ろう付塗装方法。 ２　前記ろう付後の鋼材を４００　Ｕ〜２ｏｏ′ｃに炉
冷し、次いで２００Ｃ〜１００Ｃに調整して塗装室で粉
体塗装を行うようにしたことを特徴とする特許請求の範
囲第１項の塗装方法。 ３　前記ろう付後の／ｉ４′４桐を４．００ｃ〜１００
ｃに炉冷し、次いで鋼材の温度を８０Ｃ〜３０Ｕに設定
し塗装[Claims] 1 Steel materials such as mild steel and alloy steel are heated to soo c to 1200 c and brazed in a furnace, cooled in the furnace after the treatment, and then directly connected to the furnace.F1. Mild steel is characterized in that it is transported directly to the painted area and painted using the latent heat of the steel.
Furnace brazing coating method for copper phase such as alloy steel. 2. Claim 1, characterized in that the steel material after brazing is furnace cooled to 400 U to 2oo'c, then adjusted to 200 C to 100 C, and powder coated in a coating room. How to paint. 3 /i4'4 paulownia after brazing 4.00c~100
Furnace cooling to C, then setting the temperature of the steel material to 80C to 30U and painting.