JPH07115170B2 - Filtering device in vapor phase soldering machine - Google Patents
Filtering device in vapor phase soldering machineInfo
- Publication number
- JPH07115170B2 JPH07115170B2 JP19934787A JP19934787A JPH07115170B2 JP H07115170 B2 JPH07115170 B2 JP H07115170B2 JP 19934787 A JP19934787 A JP 19934787A JP 19934787 A JP19934787 A JP 19934787A JP H07115170 B2 JPH07115170 B2 JP H07115170B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- tank
- steam tank
- filtering
- vapor phase
- 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
- 238000001914 filtration Methods 0.000 title claims description 44
- 239000012808 vapor phase Substances 0.000 title claims description 22
- 238000005476 soldering Methods 0.000 title claims description 14
- 239000007788 liquid Substances 0.000 claims description 57
- 239000012530 fluid Substances 0.000 claims description 21
- 229920006395 saturated elastomer Polymers 0.000 claims description 12
- 238000009834 vaporization Methods 0.000 claims description 5
- 230000008016 vaporization Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000006071 cream Substances 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012442 inert solvent Substances 0.000 description 2
- RVZRBWKZFJCCIB-UHFFFAOYSA-N perfluorotributylamine Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)N(C(F)(F)C(F)(F)C(F)(F)C(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F RVZRBWKZFJCCIB-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000013022 venting Methods 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/012—Soldering with the use of hot gas
- B23K1/015—Vapour-condensation soldering
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は、気相式はんだ付け装置にて飽和蒸気相となる
液を濾過するフィルタリング装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a filtering device for filtering a liquid that becomes a saturated vapor phase in a vapor phase soldering device.
（従来の技術） 気相式はんだ付け装置では、蒸気槽の下部に収容された
液がヒータによって加熱され、この液が蒸発して、蒸気
槽の内部に飽和蒸気相が形成され、この飽和蒸気相が有
する気化潜熱によって、プリント配線基板と基板搭載部
品との間にあるクリームはんだが溶融され、リフローは
んだ付けがなされる。(Prior Art) In a vapor-phase soldering device, a liquid contained in a lower portion of a steam tank is heated by a heater, the liquid evaporates, and a saturated vapor phase is formed inside the steam tank. Due to the latent heat of vaporization of the phases, the cream solder between the printed wiring board and the board-mounted component is melted and reflow soldering is performed.
このような気相式はんだ付け装置において、飽和蒸気相
となる液（フッ素系不活性溶剤、商品名フロリナート）
は高価なものであるため、装置の稼働が停止されてか
ら、蒸気槽の下部から取出して、フィルタリング用流体
回路系で濾過した後に蒸気槽に戻し、劣化を防止するよ
うにしている。In such a vapor phase soldering device, a liquid that becomes a saturated vapor phase (fluorine-based inert solvent, trade name Fluorinert)
Is expensive, so after the operation of the device is stopped, it is taken out from the lower part of the steam tank, filtered by the filtering fluid circuit system, and then returned to the steam tank to prevent deterioration.
（発明が解決しようとする問題点） しかし、この稼働停止後の濾過だけでは、装置稼働中に
液中に混入した不純物が稼働中はそのままの状態で運転
され、好ましくないとともに、フィルタリング用流体回
路系にかかる負担も大きく、稼働停止後に濾過に多くの
時間を要する問題があった。(Problems to be solved by the invention) However, only by filtration after the operation is stopped, impurities mixed in the liquid during the operation of the apparatus are operated as they are during operation, which is not preferable, and the filtering fluid circuit The burden on the system is large, and there is a problem that filtration takes a long time after the operation is stopped.
本発明の目的は、装置稼働中に液中に混入した不純物の
濾過を可能とするとともに、稼働停止後の濾過に要する
負担を軽減することにある。An object of the present invention is to enable filtration of impurities mixed in the liquid during operation of the device and reduce the burden required for filtration after the operation is stopped.
（問題点を解決するための手段） 本発明は、蒸気槽10の下部に収容された液12が加熱さ
れ、蒸気槽10の内部に飽和蒸気相13が形成され、この飽
和蒸気相13が有する気化潜熱によってリフローはんだ付
けがなされる気相式はんだ付け装置において、稼働停止
された蒸気槽10の下部から液12を取出し濾過した後に蒸
気槽10に戻す第１のフィルタリング用流体回路系31と、
稼働中の蒸気槽10の下部から液12を取出して濾過し蒸気
槽10に連続的に循環する第２のフィルタリング用流体回
路系32とが、共に蒸気槽10に対して設けられたものであ
る。(Means for Solving Problems) In the present invention, the liquid 12 contained in the lower portion of the steam tank 10 is heated to form a saturated vapor phase 13 inside the steam tank 10, and the saturated vapor phase 13 has In a vapor phase type soldering apparatus in which reflow soldering is performed by latent heat of vaporization, a first filtering fluid circuit system 31 for extracting a liquid 12 from a lower portion of the steam tank 10 in which operation is stopped and filtering and then returning the liquid 12 to the steam tank 10,
A second filtering fluid circuit system 32 is provided for the steam tank 10 so that the liquid 12 is taken out from the lower portion of the steam tank 10 in operation, filtered, and continuously circulated in the steam tank 10. .
（作用） 本発明は、装置稼働中は、蒸気槽10の下部から第２のフ
ィルタリング用流体回路系32に液12を少しずつ取出し、
この第２のフィルタリング用流体回路系32によって液12
を濾過しながら連続的に蒸気槽10に循環する。また、装
置の稼働が停止された後は、蒸気槽10の下部から第１の
フィルタリング用流体回路系31に全部の液12を取出し、
この第１のフィルタリング用流体回路系31によって液12
を完全に濾過した後に、蒸気槽10に戻すようにする。(Operation) In the present invention, while the apparatus is in operation, the liquid 12 is taken out from the lower portion of the steam tank 10 to the second filtering fluid circuit system 32 little by little,
The liquid 12 is formed by the second filtering fluid circuit 32.
Is continuously circulated in the steam tank 10 while being filtered. Further, after the operation of the device is stopped, all the liquid 12 is taken out from the lower part of the steam tank 10 to the first filtering fluid circuit system 31,
The liquid 12 is formed by the first filtering fluid circuit system 31.
Is completely filtered and then returned to the steam tank 10.
（実施例） 以下、本発明を図面に示される実施例を参照して詳細に
説明する。(Example) Hereinafter, the present invention will be described in detail with reference to the examples shown in the drawings.
10は、気相式はんだ付けに使用される蒸気槽である。こ
の蒸気槽10の下部の液溜部11に収容された液（フッ素系
不活性溶剤、商品名フロリナート）12が図示されないヒ
ータによって加熱され、蒸気槽10の内部に飽和蒸気相13
が形成される。そして、この飽和蒸気相13にワーク搬入
側ダクト14からワーク搬出側ダクト15にわたってエンド
レスチェンの一部が配設されたコンベヤ16によってワー
クＷが搬入され、飽和蒸気相13が有する気化潜熱によっ
てワークＷがリフローはんだ付けされる。ワークＷは、
プリント配線基板にクリームはんだを介して表面実装商
品が搭載されており、飽和蒸気相13の気化潜熱によって
そのクリームはんだが溶融される。10 is a steam tank used for vapor phase soldering. A liquid (fluorine-based inert solvent, trade name Fluorinert) 12 contained in a liquid reservoir 11 at the bottom of the steam tank 10 is heated by a heater (not shown), and a saturated vapor phase 13 is generated inside the steam tank 10.
Is formed. Then, the work W is carried into the saturated vapor phase 13 by the conveyor 16 in which a part of the endless chain is arranged from the work carrying-in side duct 14 to the work carrying-out side duct 15, and the work W is carried by the latent heat of vaporization of the saturated vapor phase 13. Are reflow soldered. Work W is
The surface-mounted product is mounted on the printed wiring board via the cream solder, and the cream solder is melted by the latent heat of vaporization of the saturated vapor phase 13.
前記搬入側ダクト14および搬出側ダクト15にはコンベヤ
16を挟んで上下に冷却コイル17,18が設けられ、この冷
却コイル17,18によって蒸気槽10から外部に漏出しよう
とする蒸気が凝縮され、その凝縮液は、前記ダクト14,1
5から蒸気槽10の液溜部11に回収される。前記冷却コイ
ル17,18には、加温ユニット21によって比較的低温の一
定温度に温度調整された冷却水が冷水配管22を経て供給
されている。A conveyor is provided in the loading duct 14 and the unloading duct 15.
Cooling coils 17 and 18 are provided above and below with 16 in between, and the steam that is about to leak to the outside from the steam tank 10 is condensed by the cooling coils 17 and 18, and the condensate is the ducts 14 and 1
5 is collected in the liquid reservoir 11 of the steam tank 10. Cooling water whose temperature is adjusted to a relatively low constant temperature by a heating unit 21 is supplied to the cooling coils 17 and 18 through a cold water pipe 22.
また、ワーク搬入側ダクト14の入口部およびワーク搬出
側ダクト15の出口部から排気配管23が引出され、液回収
ユニット24を経てブロア25に接続されている。そして、
このブロア25の吸引力によって、ダクト14,15内に漂う
ミストが配管23を経て液回収ユニット24に吹込まれ、こ
のユニット24の内部で空気と液とに分離され、空気はブ
ロア25を経て大気に排気され、液は配管26を経て蒸気槽
10に回収される。Further, an exhaust pipe 23 is drawn out from the inlet of the work loading duct 14 and the outlet of the work unloading duct 15, and is connected to a blower 25 via a liquid recovery unit 24. And
Due to the suction force of the blower 25, the mist drifting in the ducts 14 and 15 is blown into the liquid recovery unit 24 through the pipe 23, and is separated into air and liquid inside the unit 24, and the air passes through the blower 25 to the atmosphere. The liquid is exhausted to the steam tank through the pipe 26.
Recovered to 10.
このような気相式はんだ付け装置において、ヒータ停止
およびコンベヤ停止等により稼働停止された蒸気槽10の
下部から液12を取出し濾過した後に蒸気槽10に戻す第１
のフィルタリング用流体回路系31と、稼働中の蒸気槽10
の下部から液12を少しずつ取出して濾過し蒸気槽10に連
続的に循環する第２のフィルタリング用流体回路系32と
が、共に蒸気槽10に対して設けられている。In such a vapor-phase soldering apparatus, the liquid 12 is taken out from the lower portion of the steam tank 10 whose operation has been stopped by stopping the heater, stopping the conveyor, etc., and is filtered and then returned to the steam tank 10.
Filtering fluid circuit 31 and steam tank 10 in operation
A second filtering fluid circuit system 32 is provided with respect to the steam tank 10 so that the liquid 12 is taken out little by little from the lower part of the tank, filtered, and continuously circulated in the steam tank 10.
第１のフィルタリング用流体回路系31は、蒸気槽10から
管41が引出され、この管41から取出管42が分岐され、こ
の取出管42を経てサージタンク43が接続され、さらに管
44を経てフィルタリングタンク45が接続され、さらにポ
ンプ46が設けられた管47からフィルタリング用循環配管
48が分岐され、この管48は電磁弁49およびカートリッジ
フィルタ50を経て前記サージタンク43に接続されてい
る。前記管47からは液戻し管51が分岐され、この管51、
電磁弁52を経て前記管41に接続されている。さらに、こ
の管41から分岐された管53は、緊急時に蒸気槽10内の全
ての液12を外部に取出すためのものであり、フィルタリ
ングタンク45に接続されている。In the first filtering fluid circuit system 31, a pipe 41 is drawn out from the steam tank 10, a take-out pipe 42 is branched from the pipe 41, a surge tank 43 is connected through the take-out pipe 42, and a pipe is further provided.
A filtering tank 45 is connected via 44, and a pipe 47 provided with a pump 46 is connected to a circulating pipe for filtering.
48 is branched, and this pipe 48 is connected to the surge tank 43 via a solenoid valve 49 and a cartridge filter 50. A liquid return pipe 51 is branched from the pipe 47, and this pipe 51,
It is connected to the pipe 41 via a solenoid valve 52. Further, the pipe 53 branched from the pipe 41 is for taking out all the liquid 12 in the steam tank 10 to the outside in an emergency, and is connected to the filtering tank 45.
このフィルタリングタンク45は、前記管44から注入され
た液を濾過するマット状フィルタ54を上部に設けてなる
大型のタンクであり、蒸気槽10内の全ての液をこのタン
ク45の内部に収容できる。また、前記サージタンク43に
は、蒸気槽10内高温の液12をフィルタリングタンク45に
排出するにあたって冷却する働きがあり、このサージタ
ンク43には、前記加温ユニット21によって温度調整され
た冷却水が管56によって供給される。The filtering tank 45 is a large tank having a mat-shaped filter 54 for filtering the liquid injected from the pipe 44 provided on the upper portion thereof, and all the liquid in the steam tank 10 can be stored in the tank 45. . The surge tank 43 has a function of cooling the high temperature liquid 12 in the steam tank 10 to the filtering tank 45, and the surge tank 43 has cooling water whose temperature is adjusted by the heating unit 21. Are supplied by tube 56.
第２のフィルタリング用流体回路系32は、蒸気槽10の底
部から液循環配管61が引出され、この管61中にポンプ62
およびカートリッジフィルタ63が設けられている。管61
と戻し口はワーク搬出側ダクト15の出口側に接続され、
そして、このダクト15に戻された液は、液溜部内ヒータ
からの伝熱によって高温状態にあるダクト15から熱を受
け、温度上昇しながら蒸気槽10の液溜部11に循環され
る。In the second filtering fluid circuit system 32, a liquid circulation pipe 61 is drawn out from the bottom of the steam tank 10, and a pump 62 is introduced into the pipe 61.
And a cartridge filter 63 is provided. Tube 61
And the return port is connected to the outlet side of the work discharge side duct 15.
Then, the liquid returned to the duct 15 receives heat from the duct 15 in a high temperature state due to heat transfer from the heater in the liquid reservoir, and is circulated to the liquid reservoir 11 of the steam tank 10 while increasing the temperature.
図において、２本線はリフローはんだ付けに使用される
液12の循環系配管を示し、１本線は冷水配管を示し、点
線は排気配管を示し、１点鎖線はエア抜き配管を示す。In the figure, the two lines show the circulation system piping for the liquid 12 used for reflow soldering, the one line shows the cold water piping, the dotted line shows the exhaust piping, and the one-dot chain line shows the air venting piping.
Ｐはポンプ、PSは圧力スイッチ、SVは電磁弁、MVは電動
弁、CVは制御弁、FMは流動計、FSはフロートスイッチ、
CAは熱電対、Ｂはブロア、WSは風速センサ、EOVは緊急
時手動開放弁、ＶはＹ形ストレーナ、Ｚはバタフライ
弁、蝶形はボールバルブ、MFはマットフィルタ、CFはカ
ートリッジフィルタを示す。P is a pump, PS is a pressure switch, SV is a solenoid valve, MV is a motorized valve, CV is a control valve, FM is a flow meter, FS is a float switch,
CA is a thermocouple, B is a blower, WS is a wind speed sensor, EOV is an emergency manual opening valve, V is a Y-strainer, Z is a butterfly valve, butterfly is a ball valve, MF is a mat filter, CF is a cartridge filter. .
各種バルブにおいて、白色は全開状態を示し、黒色は全
閉状態を示し、半分白で半分黒は調整された状態を示
す。図には通常運転時のバルブ開閉状態が示されてい
る。In the various valves, white indicates a fully open state, black indicates a fully closed state, half white and half black indicate an adjusted state. The figure shows the valve open / close state during normal operation.
FS1は蒸気槽内液の上限を検出するフロートスイッチで
あり、FS2は蒸気槽内液の下限を検出するフロートスイ
ッチであり、FS3は蒸気槽内液の液不足を検出するフロ
ートスイッチであり、FS4はサージタンク43内液の上限
および下限を検出するフロートスイッチであり、FS5は
マットフィルタ54の目詰りを検出するフロートスイッチ
であり、FS6はフィルタリングタンク45内液の上限およ
び下限を検出するためのフロートスイッチである。FS1 is a float switch that detects the upper limit of the liquid in the steam tank, FS2 is a float switch that detects the lower limit of the liquid in the steam tank, FS3 is a float switch that detects the liquid shortage of the liquid in the steam tank, and FS4 Is a float switch for detecting the upper and lower limits of the liquid in the surge tank 43, FS5 is a float switch for detecting the clogging of the mat filter 54, and FS6 is for detecting the upper and lower limits of the liquid in the filtering tank 45. It is a float switch.
次に、第１および第２のフィルタリング用流体回路系3
1,32の作用を説明すると、蒸気槽10が稼働されている間
は、管61中のポンプ62を駆動して、蒸気槽10の液溜部11
から少しずつ液12を取出し、カートリッジフィルタ63に
よって液中の不純物を除去し、濾過された液を高温のダ
クト15を経て液溜部11に循環する。Next, the first and second filtering fluid circuit systems 3
The operation of 1,32 will be explained. While the steam tank 10 is in operation, the pump 62 in the pipe 61 is driven to drive the liquid reservoir 11 of the steam tank 10.
The liquid 12 is taken out little by little, the impurities in the liquid are removed by the cartridge filter 63, and the filtered liquid is circulated to the liquid reservoir 11 through the hot duct 15.
また、蒸気槽10の稼働が停止された後に、制御弁55を開
き、液溜部11の内部の全ての液を、管41,42、サージタ
ンク43、管44を経てフィルタリングタンク45の内部に排
出する。そして、電磁弁49を開くとともに電磁弁52を閉
じ、タンク45内の液をポンプ46によって、管47,48、サ
ージタンク43および管44を経て循環させ、カートリッジ
フィルタ50およびマットフィルタ54によって濾過する。
このような循環濾過を複数回行った後、電磁弁49を閉じ
るとともに電磁弁52を開き、タンク45内の液をポンプ46
によって管51等を経て蒸気槽10の液溜部11に戻すように
する。Further, after the operation of the steam tank 10 is stopped, the control valve 55 is opened, and all the liquid in the liquid reservoir 11 is introduced into the filtering tank 45 via the pipes 41, 42, the surge tank 43, and the pipe 44. Discharge. Then, the solenoid valve 49 is opened and the solenoid valve 52 is closed, the liquid in the tank 45 is circulated by the pump 46 through the pipes 47 and 48, the surge tank 43 and the pipe 44, and filtered by the cartridge filter 50 and the mat filter 54. .
After performing such circulation filtration a plurality of times, the solenoid valve 49 is closed and the solenoid valve 52 is opened to pump the liquid in the tank 45.
To return to the liquid reservoir 11 of the steam tank 10 via the pipe 51 and the like.
本発明によれば、稼働停止された蒸気槽の下部から液を
取出し濾過した後に蒸気槽に戻す第１のフィルタリング
用流体回路系と、稼働中の蒸気槽の下部から液を取出し
て濾過し蒸気槽に連続的に循環する第２のフィルタリン
グ用流体回路系とが、共に蒸気槽に対して設けられたか
ら、装置稼働中に液中に混入した不純物も第２のフィル
タリング用流体回路系によって濾過でき、特に大きなご
みの濾過に効果的である。さらに稼働停止後の濾過に要
する第１のフィルタリング用流体回路系の負担を軽減で
き、比較的短時間で本来のフィルタリングを終えること
ができる。According to the present invention, the first filtering fluid circuit system that removes the liquid from the lower portion of the steam tank that has stopped operation, filters it, and then returns it to the steam tank; Since the second filtering fluid circuit system that continuously circulates in the tank is provided together with the steam tank, impurities mixed in the liquid during the operation of the device can also be filtered by the second filtering fluid circuit system. , Especially effective for filtering large garbage. Further, the load on the first filtering fluid circuit system required for filtration after the operation is stopped can be reduced, and the original filtering can be completed in a relatively short time.
図は本発明の気相式はんだ付け装置におけるフィルタリ
ング装置の一実施例を示す流体回路図である。 10……蒸気槽、12……液、13……飽和蒸気相、31……第
１のフィルタリング用流体回路系、32……第２のフィル
タリング用流体回路系。FIG. 1 is a fluid circuit diagram showing an embodiment of a filtering device in a vapor phase soldering device of the present invention. 10 ... Steam tank, 12 ... Liquid, 13 ... Saturated vapor phase, 31 ... First filtering fluid circuit system, 32 ... Second filtering fluid circuit system.
Claims (1)
蒸気槽の内部に飽和蒸気相が形成され、この飽和蒸気相
が有する気化潜熱によってリフローはんだ付けがなされ
る気相式はんだ付け装置において、稼働停止された蒸気
槽の下部から液を取出し濾過した後に蒸気槽に戻す第１
のフィルタリング用流体回路系と、稼働中の蒸気槽の下
部から液を取出して濾過し蒸気槽に連続的に循環する第
２のフィルタリング用流体回路系とが、共に蒸気槽に対
して設けられたことを特徴とする気相式はんだ付け装置
におけるフィルタリング装置。1. A liquid contained in a lower portion of a steam tank is heated,
In the vapor phase soldering device where a saturated vapor phase is formed inside the vapor tank, and reflow soldering is performed by the latent heat of vaporization of this saturated vapor phase, after removing the liquid from the lower part of the vapor tank that has stopped operating and filtering First return to the steam tank
And a second filtering fluid circuit system for removing the liquid from the lower portion of the steam tank in operation, filtering the liquid, and continuously circulating the liquid in the steam tank. A filtering device in a vapor-phase soldering device, characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19934787A JPH07115170B2 (en) | 1987-08-10 | 1987-08-10 | Filtering device in vapor phase soldering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19934787A JPH07115170B2 (en) | 1987-08-10 | 1987-08-10 | Filtering device in vapor phase soldering machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6444273A JPS6444273A (en) | 1989-02-16 |
| JPH07115170B2 true JPH07115170B2 (en) | 1995-12-13 |
Family
ID=16406255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19934787A Expired - Lifetime JPH07115170B2 (en) | 1987-08-10 | 1987-08-10 | Filtering device in vapor phase soldering machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07115170B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH082495B2 (en) * | 1989-12-25 | 1996-01-17 | 日立テクノエンジニアリング株式会社 | Vapor reflow soldering method and device |
-
1987
- 1987-08-10 JP JP19934787A patent/JPH07115170B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6444273A (en) | 1989-02-16 |
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