JPS5910467A - Production of blank material for brazing - Google Patents
Production of blank material for brazingInfo
- Publication number
- JPS5910467A JPS5910467A JP11995682A JP11995682A JPS5910467A JP S5910467 A JPS5910467 A JP S5910467A JP 11995682 A JP11995682 A JP 11995682A JP 11995682 A JP11995682 A JP 11995682A JP S5910467 A JPS5910467 A JP S5910467A
- Authority
- JP
- Japan
- Prior art keywords
- brazing
- extrudate
- brazing alloy
- melt
- extrusion
- 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.)
- Granted
Links
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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Coating By Spraying Or Casting (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はアルミニウム押出材の表面にろう合金を被覆し
たろう肘用素材の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a material for a brazing elbow, in which the surface of an aluminum extrusion is coated with a brazing alloy.
今日アルミニウムはアルミニウムの軽量性。Today, aluminum is lightweight.
加工性、熱の良導性等の利点を生かし、かつ近年のろう
付技術の発達と相まって各種産業用機器、車輛等の放熱
器、熱交換器等に使用されている。たとえば、電子機器
等に使用するヒートシンクは種々の形状および厚さを有
する押出材を基板上にろう付し、また車輛等に使用する
ラジェータはろう合金の被覆された扁平管とフィンをろ
う付して所望の形状とし、使用される。Taking advantage of its advantages such as workability and good thermal conductivity, coupled with the recent development of brazing technology, it is used in various industrial equipment, radiators and heat exchangers for vehicles, etc. For example, heat sinks used in electronic devices are made by brazing extruded materials of various shapes and thickness onto a substrate, and radiators used in vehicles are made by brazing flat tubes and fins coated with a brazing alloy. It is then shaped into the desired shape and used.
一方この種のろう肘用素材の製造方法として■あらかじ
め製造したろう合金板を芯材となるアルミニウムあるい
はアルミニウム合金(以下単にアルミニウムという)板
面にクラッドに圧延接合する圧延接合方法、そしてこの
クラツド板を所要の形状にまるめ、しかる後連続的にシ
ーム接合してクラツド管を製造する方法、■ろう合金材
と芯材となるアルミニウムをクラッドして押出加工する
クラッド押出方法、◎溶融したろう合金に芯材となるア
ルミニウムを浸漬する浸漬方法などがあシ、いずれの方
法によってもろう合金を被覆したろう肘用素材を製造す
ることができる。しかし、■の圧延接合方法の場合は、
接合すべき板面の酸化物等を除去して清浄にせねばなら
ずそのための複雑な前処理および設備が必要となること
、さらにこのクラツド板を用いて管を製造する場合はシ
ーム接合部分のろう合金層に所期する均一な厚さのもの
を得難いこと。一方■のクラッド押出方法の場合はクラ
ッドした二重ビレットを必要とすること。On the other hand, as a manufacturing method for this kind of material for brazing elbows, there is a rolling joining method in which a pre-manufactured brazing alloy plate is rolled and joined to a core plate of aluminum or aluminum alloy (hereinafter simply referred to as aluminum) to a cladding, and this cladding plate is A method of manufacturing a clad pipe by rounding it into a desired shape and then continuously seaming it. ■A cladding extrusion method of cladding and extruding a brazing alloy material and aluminum as a core material. There are various methods, including a dipping method in which aluminum serving as a core material is immersed, and a material for a brazing elbow coated with a brazing alloy can be produced by any method. However, in the case of the rolling joining method (■),
The surfaces of the plates to be joined must be cleaned to remove oxides, etc., which requires complex pre-treatment and equipment, and when manufacturing pipes using this clad plate, the solder at the seam joints must be cleaned. It is difficult to obtain the desired uniform thickness of the alloy layer. On the other hand, in the case of clad extrusion method (■), a clad double billet is required.
その上に押出材の全長に亘るろう合金層の厚さの均一性
の維持、コントロールが難かしく2合金の組合せたとえ
ば融点の低いろり合金と融点の高いアルミニウムの場合
は押出加工できないこと。更に◎の浸漬方法の場合は形
状的な制約。Furthermore, it is difficult to maintain and control the uniformity of the thickness of the brazing alloy layer over the entire length of the extruded material, and extrusion cannot be performed in the case of a combination of two alloys, such as a brazing alloy with a low melting point and aluminum with a high melting point. Furthermore, in the case of ◎ dipping method, there are shape constraints.
ろう合金層の厚さおよび均一性の維持、コントロールが
難しいこと等の問題点がある。There are problems such as difficulty in maintaining and controlling the thickness and uniformity of the brazing alloy layer.
本発明は、上記1−だような実情に基づいて検討し開発
されたものであって1通常の押出プロセスに溶射プロセ
スを組合せることにより、連続的にしかも各種形状のア
ルミニウム押出材の外表面に均一なろう合金層を強固に
形成せしめることができることを確認した。The present invention has been studied and developed based on the above-mentioned circumstances. 1. By combining a normal extrusion process with a thermal spraying process, the outer surface of aluminum extrusions of various shapes can be continuously and It was confirmed that a uniform brazing alloy layer could be formed strongly.
」二重したような本発明方法についてさらに説明すると
、温間押出′または熱間押出されたアルミニウム押出材
は、押出直後においては表面は清浄でかつ酸化皮膜未形
成の活性な表面であ机それ故に溶射されたろう合金は素
地に機械的に付着した後直ちにぬれ易い高温表面に融着
し。To further explain the method of the present invention, the aluminum extruded material subjected to warm extrusion or hot extrusion has a clean surface and an active surface with no oxide film formed immediately after extrusion. Therefore, after being mechanically attached to the substrate, the sprayed braze alloy immediately fuses to the wettable hot surface.
また一部は表面に拡散して1強固に密着するものと考え
られる。It is also believed that some of the particles diffuse to the surface and adhere firmly to the surface.
本発明方法の実施態様としては、押出機のダイス出口端
近くに自動溶射装置を、押出材の所定表面または全表面
を均一に被覆するため1基または複数基設置して行なう
もので、自動溶射装置の設置W例としては、第1図装置
側面図、第2図および第3図押出材進行方向からの正面
図に示すように押出機1からの押出材2に対して上方か
ら、また下方は必要に応じて押出材の搬送用ローラ6の
中間から、溶射ガン4にょシ押出材面に対し垂直溶射と
なるよう配置し、溶射被覆層の均一化を図っている。な
お溶射ガンの配置は、押出材の形状、目的に応じ1基以
上複数基を適宜配置すれば良い。In an embodiment of the method of the present invention, one or more automatic thermal spraying devices are installed near the die exit end of the extruder in order to uniformly coat a predetermined surface or the entire surface of the extruded material. As an example of the installation W of the device, as shown in the side view of the device in FIG. 1, and the front view from the direction of progress of the extruded material in FIGS. 2 and 3, If necessary, the thermal spraying gun 4 is arranged to spray perpendicularly to the surface of the extruded material from the middle of the roller 6 for conveying the extruded material, thereby making the thermal spray coating layer uniform. Note that one or more thermal spray guns may be appropriately arranged depending on the shape and purpose of the extruded material.
たとえば、ピー1−シンク用の押出型材の場合は押出の
際に基台と型制のろう伺を強固にするため、ろう付箇所
にλg−81系のろう合金を溶射し、あるいは低融点ろ
う合金を溶射して、うう合金の被覆層を形成せしめる。For example, in the case of extruded mold materials for P1-sinks, in order to strengthen the solder joint between the base and mold during extrusion, a λg-81 type brazing alloy is thermally sprayed at the brazing points, or a low melting point wax is used. The alloy is thermally sprayed to form a coating layer of the alloy.
また特に熱交換器等の部品で孔腐食を好まないたとえば
冷媒の通路となる扁平管の如き部品の場合は押出の際に
Znを含有するろう合金、−例としては人、e−Sムー
Zn系のろう合金を溶射することが特に有効であって、
その後のろう何工程でZnの拡散1を該扁平管の表面に
形成することができ。Particularly in the case of parts such as heat exchangers that do not like pit corrosion, such as flat tubes that serve as refrigerant passages, brazing alloys containing Zn are used during extrusion. It is particularly effective to thermally spray a brazing alloy based on
In the subsequent waxing step, Zn diffusion 1 can be formed on the surface of the flat tube.
孔腐食を適切に防止することができる。Pore corrosion can be appropriately prevented.
本発明方法によれば、溶射に通常必要とされるプラスチ
ング、予備加熱を要せず優れた皮膜密着性を得ることが
でき、工程的にも簡略化される。なお、ろう合金溶射に
際しては1粒子が酸化され易いので、これを防止するに
は、火焔をなるべく還元性となし、要すれば不活性ガス
を利用する。また溶射距離をなるべく短かくするなどの
一般的配慮が必要でア#)、不活性雰囲気下で溶射工程
を行なっても良い。また押出材の押出速度と溶射条件を
制御することによりクラッド層の厚さを任意に制御する
ことが可能である。According to the method of the present invention, excellent film adhesion can be obtained without the need for plasting and preheating that are normally required for thermal spraying, and the process is also simplified. Note that during thermal spraying of a brazing alloy, one particle is likely to be oxidized, so to prevent this, the flame should be made as reducing as possible, and if necessary, an inert gas should be used. In addition, general considerations such as making the spraying distance as short as possible are necessary, and the spraying process may be carried out under an inert atmosphere. Further, by controlling the extrusion speed of the extruded material and the thermal spraying conditions, it is possible to arbitrarily control the thickness of the cladding layer.
本発明方法によれば、均一で密着性の良いクラッド層が
連続的にしかも各種形材の外表面に形成される。装置W
も簡便であって、コスト面ににおいても低摩な実用性に
浸れたクラツド材の製造方法ということができる。According to the method of the present invention, a uniform and highly adhesive cladding layer is continuously formed on the outer surface of various shapes. Equipment W
This method is also simple and can be said to be a practical method for manufacturing cladding materials with low friction and low cost.
本発明方法によるものの具体的な実施例について説明す
ると、以下の通りである。Specific examples of the method according to the present invention will be described below.
実施例1
第1図および第2図に示すように、押出機のダイス端近
傍に自動溶射設備1基を設置し、第7の櫛歯型ヒートシ
ンクを押出速度約18m/分で押出成形し、押出中に第
2表に示す溶射条件で第1表に示す組成のろう合金線を
用いて基板の取付けられる部分に連続的に溶射を行なっ
た。Example 1 As shown in FIGS. 1 and 2, one automatic thermal spraying equipment was installed near the die end of the extruder, and a seventh comb-shaped heat sink was extruded at an extrusion speed of about 18 m/min. During extrusion, under the thermal spraying conditions shown in Table 2, a brazing alloy wire having the composition shown in Table 1 was continuously sprayed onto the part to be attached to the substrate.
第 1 表
第 2 表
その結果、押出材表面に100−m−g / m”のろ
う合金被覆層が形成された。Table 1 Table 2 As a result, a brazing alloy coating layer of 100-mg/m'' was formed on the surface of the extruded material.
このようにして成形でれた櫛歯型材と基板(図示せず)
とを11合せて1次の第3表に示す条件で、ろう付を行
ないヒートシンクのろう付品を作成した。The comb-shaped material and substrate formed in this way (not shown)
11 were combined and brazed under the conditions shown in Table 3 below to create a brazed heat sink.
第 3 表 接着率95%以上で良好なろう接部を形成し。Table 3 Forms a good soldered joint with an adhesion rate of 95% or more.
十分なろう伺性が得られ、アルミニウムのろう付に対し
、極めて有効な方法であることが示された。Sufficient solderability was obtained, and it was shown to be an extremely effective method for brazing aluminum.
実施例2
実施例1の如く、第3図に示すように、押出機のダイス
端近傍に自′lIJ溶射設備4基を設置し。Example 2 As in Example 1, as shown in FIG. 3, four IJ thermal spraying equipment were installed near the die end of the extruder.
第4表に示す組成でかつ実施例1に示す寸法のビレット
を用い、第4図に示す断面形状の幅26咽、高さ5關、
4本の冷媒流路を有する管厚0.Bmm+ 障壁厚1.
0mmの扁平管を押出速度約15m/分で押出成形し、
押出中に第2表に示す溶射条件で第4表に示す組成のZ
n含有ろう合金線を用いて全表面に連続的に溶射を行な
った0
第 4 表
その結果、押出材表面に約50 pmのろう合金被覆層
が形成された。Using a billet having the composition shown in Table 4 and the dimensions shown in Example 1, the cross-sectional shape shown in FIG.
Pipe thickness 0.0 with 4 refrigerant channels. Bmm+ Barrier thickness 1.
A 0 mm flat tube was extruded at an extrusion speed of about 15 m/min,
Z of the composition shown in Table 4 under the thermal spraying conditions shown in Table 2 during extrusion.
As a result, a brazing alloy coating layer of about 50 pm was formed on the extruded material surface by continuous thermal spraying on the entire surface using n-containing brazing alloy wire.
このようにして成形された押出扁平管とA300!、材
で形成されたコルゲートフィンとを組合せて、第3表に
示す条件で、ろう付を行ない積層型のろう付品を作成し
た。The extruded flat tube formed in this way and A300! , and a corrugated fin made of material, and brazing was performed under the conditions shown in Table 3 to create a laminated brazed product.
ろう付温度に保持された結呆押出扁平管表層部にZn濃
度10重量%、Zn拡散層深さ80茫δ拡散層が形成さ
れていることがX線マイクロアナライザーにより確認さ
れた。とのろう付品をJI8 1■ 8661 に規定
されているCASS0
試験720hrを行なった結果1発生した腐食は何れも
面食形態で、孔食の発生は認められず。It was confirmed by an X-ray microanalyzer that a Zn concentration of 10% by weight and a Zn diffusion layer depth of 80mm δ diffusion layer were formed in the surface layer of the extruded flat tube that had been kept at the brazing temperature. As a result of conducting CASS0 test for 720 hours as specified in JI8 1■ 8661 on brazed products, all corrosion that occurred was in the form of face corrosion, and no pitting corrosion was observed.
均一で密着17たZn含有ろう合金被覆層力ぶ形成され
ていることが示された。It was shown that a uniform and adherent Zn-containing braze alloy coating layer was formed.
第1図は本発明方法火施態様例の側■n図、第2図およ
び第6図は溶射ガンの配置f!lを示す押出拐進行方向
からの正面図、第4図は押出扁平管の拡大断面図である
。
1は押出機、2は押出材、5は搬送用ローラ4は溶射ガ
ン。
特許出願人 日本軽金属株式会社FIG. 1 is a side view of an embodiment of the method of the present invention, and FIGS. 2 and 6 are views showing the arrangement of a thermal spray gun. FIG. 4 is an enlarged sectional view of the extruded flat tube. 1 is an extruder, 2 is an extruded material, and 5 is a conveyance roller 4 is a thermal spray gun. Patent applicant Nippon Light Metal Co., Ltd.
Claims (1)
材の表面にろう合金を溶射してろう合金の被覆層を形成
したことを特徴とするろう肘用素材の製造方法。 2、前記ろう合金が亜鉛を含有していることを特徴とす
る特許請求の範囲第1項記載のろう肘用素材の製造方法
。[Scope of Claims] 1. A method for manufacturing a material for a brazing elbow, characterized in that a coating layer of a brazing alloy is formed by spraying a brazing alloy onto the surface of an extruded aluminum material in the vicinity of an extrusion port of an extrusion molding machine. 2. The method for producing a material for a brazing elbow according to claim 1, wherein the brazing alloy contains zinc.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11995682A JPS5910467A (en) | 1982-07-12 | 1982-07-12 | Production of blank material for brazing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11995682A JPS5910467A (en) | 1982-07-12 | 1982-07-12 | Production of blank material for brazing |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5910467A true JPS5910467A (en) | 1984-01-19 |
JPS631152B2 JPS631152B2 (en) | 1988-01-11 |
Family
ID=14774358
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11995682A Granted JPS5910467A (en) | 1982-07-12 | 1982-07-12 | Production of blank material for brazing |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5910467A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01107961A (en) * | 1987-10-21 | 1989-04-25 | Mitsubishi Alum Co Ltd | Manufacture of aluminum made heat exchanger |
US4901908A (en) * | 1987-09-09 | 1990-02-20 | Nippondenso Co., Ltd. | Aluminum material for brazing, method of manufacturing same, and method of manufacturing heat exchanger made of aluminum alloy |
CN102350623A (en) * | 2011-08-31 | 2012-02-15 | 金龙精密铜管集团股份有限公司 | Manufacturing method for aluminum alloy heat exchanger |
CN104807256A (en) * | 2014-01-29 | 2015-07-29 | 株式会社京滨冷暖科技 | Heat exchanger |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4831143A (en) * | 1971-08-30 | 1973-04-24 | ||
JPS5146741A (en) * | 1974-10-18 | 1976-04-21 | Matsushita Electric Ind Co Ltd | Kukichowakino seigyosochi |
JPS5488842A (en) * | 1977-12-26 | 1979-07-14 | Showa Aluminium Co Ltd | Galvanizing onto aluminum surface |
JPS5548590A (en) * | 1971-08-02 | 1980-04-07 | Hickman Ronald Price | Bench |
-
1982
- 1982-07-12 JP JP11995682A patent/JPS5910467A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5548590A (en) * | 1971-08-02 | 1980-04-07 | Hickman Ronald Price | Bench |
JPS4831143A (en) * | 1971-08-30 | 1973-04-24 | ||
JPS5146741A (en) * | 1974-10-18 | 1976-04-21 | Matsushita Electric Ind Co Ltd | Kukichowakino seigyosochi |
JPS5488842A (en) * | 1977-12-26 | 1979-07-14 | Showa Aluminium Co Ltd | Galvanizing onto aluminum surface |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4901908A (en) * | 1987-09-09 | 1990-02-20 | Nippondenso Co., Ltd. | Aluminum material for brazing, method of manufacturing same, and method of manufacturing heat exchanger made of aluminum alloy |
JPH01107961A (en) * | 1987-10-21 | 1989-04-25 | Mitsubishi Alum Co Ltd | Manufacture of aluminum made heat exchanger |
JP2515561B2 (en) * | 1987-10-21 | 1996-07-10 | 三菱アルミニウム株式会社 | Aluminum heat exchanger manufacturing method |
CN102350623A (en) * | 2011-08-31 | 2012-02-15 | 金龙精密铜管集团股份有限公司 | Manufacturing method for aluminum alloy heat exchanger |
CN104807256A (en) * | 2014-01-29 | 2015-07-29 | 株式会社京滨冷暖科技 | Heat exchanger |
CN104807256B (en) * | 2014-01-29 | 2018-04-27 | 株式会社京滨冷暖科技 | Heat exchanger |
Also Published As
Publication number | Publication date |
---|---|
JPS631152B2 (en) | 1988-01-11 |
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