WO2019196779A1 - Brazed aluminum alloy composite bottom plate and heating coil - Google Patents

Brazed aluminum alloy composite bottom plate and heating coil Download PDF

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Publication number
WO2019196779A1
WO2019196779A1 PCT/CN2019/081708 CN2019081708W WO2019196779A1 WO 2019196779 A1 WO2019196779 A1 WO 2019196779A1 CN 2019081708 W CN2019081708 W CN 2019081708W WO 2019196779 A1 WO2019196779 A1 WO 2019196779A1
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Prior art keywords
aluminum alloy
bottom plate
brazing
aluminum
brazed
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PCT/CN2019/081708
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French (fr)
Chinese (zh)
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周德伟
许丹
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周德敬
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Publication of WO2019196779A1 publication Critical patent/WO2019196779A1/en

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates

Definitions

  • the utility model mainly relates to the field of heating plates, in particular to a brazed aluminum alloy composite bottom plate and a heating plate.
  • Electric appliances such as electric kettles and rice cookers use electric heating plates to generate heat, and heat is transferred to the stainless steel or aluminum alloy containers through the aluminum alloy base plate, thereby achieving the purpose of heating water and food.
  • the traditional aluminum alloy electric heating plate brazing method is to braze the aluminum alloy circular plate with the heating pipe, and the middle brazing material is 4000 series powder aluminum alloy brazing material, aluminum solder paste or 4000 series aluminum alloy brazing material.
  • the material is protected by a protective gas such as ammonia decomposing gas or inert gas, and a metallurgical brazing link is formed between the heating tube, the aluminum alloy disc and the stainless steel under the action of the flux.
  • the brazing filler metal is a powder particle, its surface area is large, and the oxidation surface area per unit volume is increased, which causes metallurgical inclusions in brazing welding, resulting in low heat transfer efficiency, which is not conducive to energy saving and emission reduction.
  • the recovery rate of aluminum alloy is low, and the excess residue of the flux also affects the environment. Even if a solder sheet is used as the solder, since the flux is applied to both sides of the solder sheet, the amount of the flux is large and the number of solder slag is large.
  • the heat transfer efficiency of the aluminum alloy heating pipe to the stainless steel or aluminum alloy through the aluminum alloy base plate is greatly improved, and the aluminum alloy recovery rate is high, and the reduction is assisted.
  • the use of flux and environmental protection is necessary to provide a new heating plate technology.
  • the object of the present invention is to provide an aluminum alloy composite bottom plate and a heating plate, so that the metallurgical quality of the brazing joint is high, the metallurgy of the brazing metallurgy is eliminated, and the aluminum alloy heating pipe is passed through the aluminum alloy base plate to the stainless steel or the aluminum alloy.
  • the thermal efficiency is greatly improved, and the aluminum alloy has a high recovery rate, reduces the use of flux, and is environmentally friendly.
  • the utility model firstly provides an aluminum alloy composite bottom plate, which is formed by using 1000, 3000 or 6000 series aluminum alloy as a substrate, and then double-sided metallurgical composite 4000 series aluminum-silicon alloy, the single layer 4000 series aluminum
  • the ratio of the thickness of the silicon alloy to the thickness of the total composite substrate is 5-15%.
  • the present invention further provides a heating plate including the aluminum alloy composite bottom plate, wherein the heating plate includes a welded connection chassis, the aluminum alloy composite bottom plate and an aluminum alloy heating tube in order from bottom to top, the heat generation The disc is brazed and welded.
  • the heat generating disk is brazed and welded by a protective atmosphere.
  • the aluminum alloy composite substrate has a thickness of 0.5 to 5.0 mm.
  • the heat generating tube is an aluminum alloy heating tube or a stainless steel heating tube.
  • the chassis is a stainless steel chassis or an aluminum alloy chassis.
  • the stainless steel chassis is a stainless steel stamped film or a stamped barrel container.
  • the aluminum alloy chassis is an aluminum alloy stamped film or a stamped barrel container.
  • the utility model reduces the flux coating and reduces the amount of slag formed by the double-sided composite 4000 series brazing alloy of the aluminum alloy disc; the amount of the flux coated on the spot is reduced, and the traditional soldering piece or the solder powder is used.
  • the flux consumed is more than the flux of the composite wafer.
  • the heating plate flux of the utility model only needs to be coated on the bottom surface of the heating pipe, the side of the aluminum alloy composite bottom plate and the stainless steel (or aluminum alloy); and the traditional process requires the side of the heating pipe bottom surface, the aluminum alloy composite bottom plate and the stainless steel contact side. Both need to be coated with flux and then coated with brazing powder.
  • the amount of solder and flux is uncontrollable and uneven.
  • the role of the flux is mainly to break the oxide film on the surface to be brazed. Since the solder is powdery and has a large surface area, the flux consumption is increased. The result is that there are many weld slag, metallurgical loose and porous, and affect the heat conduction and future materials. recycle and re-use.
  • the utility model makes the metallurgical quality of the brazing welding high, eliminates the loose metallurgy of the brazing, and greatly improves the heat transfer efficiency of the aluminum alloy heating pipe through the aluminum alloy bottom plate to the stainless steel or the aluminum alloy, and the aluminum alloy has high recovery rate. , reducing the use of flux, and is conducive to environmental protection; the heating plate obtained by brazing aluminum alloy composite bottom plate, compared with a single aluminum alloy solder powder, aluminum solder paste or solder sheet brazing technology, Reducing the amount of coating, coating the flux is simple and convenient, reducing the operator and achieving automated flux coating.
  • FIG. 1 is a schematic view showing the structure of a heating plate not welded in the embodiment of the present invention
  • FIG. 2 is a schematic structural view of a heating plate after welding according to an embodiment of the present invention.
  • the aluminum alloy composite bottom plate is made of 1000, 3000 or 6000 series aluminum alloy as the substrate, and then double-sided metallurgical composite 4000 series aluminum-silicon alloy is formed, and the ratio of the thickness of the single-layer 4000-series aluminum-silicon alloy to the total composite substrate thickness is 5 -15%.
  • a heating plate comprising an aluminum alloy composite bottom plate, as shown in FIG. 1, the heating plate comprises, in order from bottom to top, a welded joint chassis 1, the aluminum alloy composite bottom plate 2 and an aluminum alloy heat pipe 3, which are brazed Soldering and welding.
  • the heat generating disk can be brazed by a protective atmosphere.
  • the aluminum alloy composite bottom plate has a thickness of 0.5 to 5.0 mm.
  • the heating tube is an aluminum alloy heating tube or a stainless steel heating tube.
  • the chassis in the heating plate can directly transfer heat to the food, and can be a stainless steel chassis or an aluminum alloy chassis.
  • the stainless steel chassis can be made into stainless steel stamped backsheets or stamped barrel containers.
  • the aluminum alloy chassis can also be made into an aluminum alloy stamped film or a stamped barrel container.
  • FIG. 2 A schematic structural view after welding in this embodiment is shown in FIG. 2 .
  • the heating plate flux When soldering the heating plate, the heating plate flux only needs to be applied on the bottom surface of the heating tube, the side of the aluminum alloy composite substrate and the stainless steel (or aluminum alloy), without the need of the traditional process in the bottom of the heating tube, the aluminum alloy composite substrate and the stainless steel.
  • the flux is coated with the solder powder, so that the amount of the solder and the flux is uncontrollable and uneven, and the application avoids such adverse effects. Due to the large specific surface area of the brazing powder, the flux consumption is increased.
  • the result of the traditional welding heating plate is that the heating plate has more welding slag, more metallurgical loose and porous holes, and affects heat conduction and future material recycling, and this application does not need to be used. Powdered solder, thus eliminating this effect.
  • the utility model makes the metallurgical quality of the brazing welding high, eliminates the loose metallurgy of the brazing, and greatly improves the heat transfer efficiency of the aluminum alloy heating pipe through the aluminum alloy bottom plate to the stainless steel or the aluminum alloy, and the aluminum alloy has high recovery rate. , reducing the use of flux, and is conducive to environmental protection; the heating plate obtained by brazing aluminum alloy composite bottom plate, compared with a single aluminum alloy solder powder, aluminum solder paste or solder sheet brazing technology, Reducing the amount of coating, coating the flux is simple and convenient, reducing the operator and achieving automated flux coating.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Arc Welding In General (AREA)
  • Cookers (AREA)

Abstract

The present utility model relates to a brazed aluminum alloy composite bottom plate and a heating coil. An aluminum alloy composite bottom plate uses 1000, 3000 or 6000 series aluminum alloy as a substrate, and then a 4000 series aluminum-silicon alloy double-sided metallurgical composite is formed, the ratio of the thickness of a single-layer 4000 series aluminum-silicon alloy to the thickness of the total composite substrate being 5-15%; a heating coil is formed by being brazed by a heat pipe, the aluminum alloy composite bottom plate, and a chassis. The utility model causes brazing welding metallurgical quality to be high, eliminates the metallurgical looseness of brazing, and greatly improves the heat transfer efficiency of a heating pipe to a stainless steel or an aluminum alloy by means of the aluminum alloy bottom plate. In addition, the aluminum alloy has a high recovery rate, thereby reducing the use of flux and being beneficial in environmental protection. Compared with single aluminum alloy solder powder, aluminum solder paste or solder sheet brazing techniques, the heating coil brazed and manufactured by using the aluminum alloy composite bottom plate may reduce the coating amount; in addition, coating a brazing flux is simple and convenient, and the number of operators may be reduced, achieving automatic brazing flux coating.

Description

一种钎焊式铝合金复合底板及发热盘Brazed aluminum alloy composite bottom plate and heating plate 技术领域Technical field
本实用新型主要涉及发热盘领域，尤其涉及一种钎焊式铝合金复合底板及发热盘。The utility model mainly relates to the field of heating plates, in particular to a brazed aluminum alloy composite bottom plate and a heating plate.
背景技术Background technique
电热水壶、电饭锅等生活电器采用电发热盘发热，并将热量通过铝合金底板传热到不锈钢或者铝合金容器内，从而达到加热水和食物的目的。但是传统的铝合金电发热盘钎焊方法是将铝合金圆形板材与发热管钎焊焊接到一起，中间的钎焊材料采用4000系粉末铝合金钎料、铝焊膏或者4000系铝合金钎料片，通过保护性气体如氨分解气体或者惰性气保护，在助焊剂的作用下，使发热管、铝合金圆片与不锈钢之间形成冶金钎焊链接。Electric appliances such as electric kettles and rice cookers use electric heating plates to generate heat, and heat is transferred to the stainless steel or aluminum alloy containers through the aluminum alloy base plate, thereby achieving the purpose of heating water and food. However, the traditional aluminum alloy electric heating plate brazing method is to braze the aluminum alloy circular plate with the heating pipe, and the middle brazing material is 4000 series powder aluminum alloy brazing material, aluminum solder paste or 4000 series aluminum alloy brazing material. The material is protected by a protective gas such as ammonia decomposing gas or inert gas, and a metallurgical brazing link is formed between the heating tube, the aluminum alloy disc and the stainless steel under the action of the flux.
但是由于钎料是粉末颗粒，其表面积大，单位体积的氧化表面积增加，造成钎焊焊接会产生冶金夹杂，从而导致传热效率较低，不利于节能减排。此外由于钎焊的冶金夹渣、助焊剂用量大，造成铝合金回收率低，助焊剂的多余残留也影响环境。即使采用焊料片作为焊料，由于焊料片两面均需涂敷助焊剂，助焊剂的用量较大，焊渣多。However, since the brazing filler metal is a powder particle, its surface area is large, and the oxidation surface area per unit volume is increased, which causes metallurgical inclusions in brazing welding, resulting in low heat transfer efficiency, which is not conducive to energy saving and emission reduction. In addition, due to the large amount of metallurgical slag and flux used for brazing, the recovery rate of aluminum alloy is low, and the excess residue of the flux also affects the environment. Even if a solder sheet is used as the solder, since the flux is applied to both sides of the solder sheet, the amount of the flux is large and the number of solder slag is large.
因此，为了使得钎焊焊接冶金质量高，消除钎焊冶金疏松，使铝合金发热管通过铝合金底板向不锈钢或铝合金的传热效率有着较大的提升，而且铝合金回收率高，减少助焊剂的使用，并有利于环境保护，有必要提供一种新的发热盘技术。Therefore, in order to make the metallurgical quality of brazing welding high, and to eliminate the loose metallurgy of brazing, the heat transfer efficiency of the aluminum alloy heating pipe to the stainless steel or aluminum alloy through the aluminum alloy base plate is greatly improved, and the aluminum alloy recovery rate is high, and the reduction is assisted. The use of flux and environmental protection is necessary to provide a new heating plate technology.
实用新型内容Utility model content
针对上述问题，本实用新型的目的是提供铝合金复合底板及发热盘，以使得钎焊链接冶金质量高，消除钎焊冶金疏松，使铝合金发热管通过铝 合金底板向不锈钢或铝合金的传热效率有着较大的提升，且能使铝合金回收率高，减少助焊剂的使用，并有利于环境保护。In view of the above problems, the object of the present invention is to provide an aluminum alloy composite bottom plate and a heating plate, so that the metallurgical quality of the brazing joint is high, the metallurgy of the brazing metallurgy is eliminated, and the aluminum alloy heating pipe is passed through the aluminum alloy base plate to the stainless steel or the aluminum alloy. The thermal efficiency is greatly improved, and the aluminum alloy has a high recovery rate, reduces the use of flux, and is environmentally friendly.
本实用新型首先提供一种铝合金复合底板，所述铝合金复合底板为1000、3000或6000系铝合金作为基材，再双面冶金复合4000系铝硅合金形成，所述单层4000系铝硅合金的厚度占总复合底板厚度的比例为5-15％。The utility model firstly provides an aluminum alloy composite bottom plate, which is formed by using 1000, 3000 or 6000 series aluminum alloy as a substrate, and then double-sided metallurgical composite 4000 series aluminum-silicon alloy, the single layer 4000 series aluminum The ratio of the thickness of the silicon alloy to the thickness of the total composite substrate is 5-15%.
进一步，本实用新型还提供一种包含所述铝合金复合底板的发热盘，所述发热盘从下到上依次包括焊接连接的底盘、所述铝合金复合底板和铝合金发热管，所述发热盘经钎焊焊接而成。Further, the present invention further provides a heating plate including the aluminum alloy composite bottom plate, wherein the heating plate includes a welded connection chassis, the aluminum alloy composite bottom plate and an aluminum alloy heating tube in order from bottom to top, the heat generation The disc is brazed and welded.
上述的发热盘，所述发热盘通过保护性气氛钎焊焊接而成。In the above-described heat generating disk, the heat generating disk is brazed and welded by a protective atmosphere.
上述的发热盘，所述铝合金复合底板的厚度为0.5-5.0mm。In the above heating plate, the aluminum alloy composite substrate has a thickness of 0.5 to 5.0 mm.
上述的发热盘，所述发热管为铝合金发热管或者不锈钢发热管。In the above heating plate, the heat generating tube is an aluminum alloy heating tube or a stainless steel heating tube.
上述的发热盘，所述底盘为不锈钢底盘或铝合金底盘。In the above heating plate, the chassis is a stainless steel chassis or an aluminum alloy chassis.
上述的发热盘，所述不锈钢底盘为不锈钢冲压底片或者冲压桶状容器。In the above heating plate, the stainless steel chassis is a stainless steel stamped film or a stamped barrel container.
上述的发热盘，所述铝合金底盘为铝合金冲压底片或者冲压桶状容器。In the above heating plate, the aluminum alloy chassis is an aluminum alloy stamped film or a stamped barrel container.
本实用新型通过铝合金圆片双面复合4000系钎焊合金，减少了钎剂涂覆，形成的夹渣少；减少了现场涂覆钎剂的用量，而传统用钎料片或者钎料粉末消耗的钎剂比复合圆片的钎剂量多。The utility model reduces the flux coating and reduces the amount of slag formed by the double-sided composite 4000 series brazing alloy of the aluminum alloy disc; the amount of the flux coated on the spot is reduced, and the traditional soldering piece or the solder powder is used. The flux consumed is more than the flux of the composite wafer.
本实用新型的发热盘助焊剂只需涂在发热管底面、铝合金复合底板与不锈钢(或铝合金)接触的一面；而传统的工艺需要在发热管底面、铝合金复合底板与不锈钢接触的一面，均需先覆助焊剂再涂覆钎焊粉料，钎料与助焊剂的用量不可控，且不均匀。助焊剂的作用主要是破除待钎焊表面的氧化膜，由于钎料呈粉末状，表面积大，造成助焊剂消耗量增加，后果是焊渣多、冶金疏松疏孔多，影响导热及未来材料的回收利用。The heating plate flux of the utility model only needs to be coated on the bottom surface of the heating pipe, the side of the aluminum alloy composite bottom plate and the stainless steel (or aluminum alloy); and the traditional process requires the side of the heating pipe bottom surface, the aluminum alloy composite bottom plate and the stainless steel contact side. Both need to be coated with flux and then coated with brazing powder. The amount of solder and flux is uncontrollable and uneven. The role of the flux is mainly to break the oxide film on the surface to be brazed. Since the solder is powdery and has a large surface area, the flux consumption is increased. The result is that there are many weld slag, metallurgical loose and porous, and affect the heat conduction and future materials. recycle and re-use.
总之，本实用新型使得钎焊焊接冶金质量高，消除了钎焊冶金疏松，使铝合金发热管通过铝合金底板向不锈钢或铝合金的传热效率有着较大的提升，而且铝合金回收率高，减少助焊剂的使用，并有利于环境保护；采用铝合金复合底板钎焊制得的发热盘，与单一的铝合金的钎料粉末、铝焊 膏或者钎料片钎焊技术相比，可减少涂覆量，涂覆钎剂简单方便，可减少操作人员，实现自动化钎剂涂覆。In short, the utility model makes the metallurgical quality of the brazing welding high, eliminates the loose metallurgy of the brazing, and greatly improves the heat transfer efficiency of the aluminum alloy heating pipe through the aluminum alloy bottom plate to the stainless steel or the aluminum alloy, and the aluminum alloy has high recovery rate. , reducing the use of flux, and is conducive to environmental protection; the heating plate obtained by brazing aluminum alloy composite bottom plate, compared with a single aluminum alloy solder powder, aluminum solder paste or solder sheet brazing technology, Reducing the amount of coating, coating the flux is simple and convenient, reducing the operator and achieving automated flux coating.
附图说明DRAWINGS
图1是本实用新型实施例中发热盘未焊接的结构示意图；1 is a schematic view showing the structure of a heating plate not welded in the embodiment of the present invention;
图2是本实用新型实施例中发热盘焊接后的结构示意图。2 is a schematic structural view of a heating plate after welding according to an embodiment of the present invention.
具体实施方式detailed description
以下结合附图和实施例，对本实用新型的具体实施方式进行更加详细的说明，以便能够更好地理解本实用新型的方案以及其各个方面的优点。然而，以下描述的具体实施方式和实施例仅是说明的目的，而不是对本实用新型的限制。The embodiments of the present invention will be described in more detail in conjunction with the drawings and embodiments in order to provide a better understanding of the aspects of the invention and the advantages thereof. However, the specific embodiments and examples described below are merely illustrative and not limiting of the invention.
为了改善传统发热盘焊接工艺采用钎料粉末颗粒或者铝焊膏导致的问题，提高钎焊焊接冶金质量，消除钎焊冶金疏松，使铝合金发热管通过铝合金底板向不锈钢或铝合金的传热效率有着较大的提升，而且铝合金回收率高，减少助焊剂的使用，并有利于环境保护，本申请通过双面冶金复合的4000系铝硅合金来代替钎料焊接。In order to improve the traditional heating plate welding process using solder powder particles or aluminum solder paste caused by problems, improve the quality of brazing welding metallurgy, eliminate brazing metallurgy loose, aluminum alloy heating tube through the aluminum alloy floor to the stainless steel or aluminum alloy heat transfer The efficiency is greatly improved, and the aluminum alloy has high recovery rate, reduces the use of flux, and is beneficial to environmental protection. This application replaces solder soldering by double-sided metallurgical composite 4000 series aluminum-silicon alloy.
其中的铝合金复合底板，为1000、3000或6000系铝合金作为基材，再双面冶金复合4000系铝硅合金形成，单层4000系铝硅合金的厚度占总复合底板厚度的比例为5-15％。The aluminum alloy composite bottom plate is made of 1000, 3000 or 6000 series aluminum alloy as the substrate, and then double-sided metallurgical composite 4000 series aluminum-silicon alloy is formed, and the ratio of the thickness of the single-layer 4000-series aluminum-silicon alloy to the total composite substrate thickness is 5 -15%.
包含铝合金复合底板的发热盘，如图1所示，该发热盘从下到上依次包括焊接连接的底盘1、所述铝合金复合底板2和铝合金发热管3，所述发热盘经钎焊焊接而成。具体地，所述发热盘可通过保护性气氛钎焊焊接而成。A heating plate comprising an aluminum alloy composite bottom plate, as shown in FIG. 1, the heating plate comprises, in order from bottom to top, a welded joint chassis 1, the aluminum alloy composite bottom plate 2 and an aluminum alloy heat pipe 3, which are brazed Soldering and welding. Specifically, the heat generating disk can be brazed by a protective atmosphere.
优选地，所述铝合金复合底板的厚度为0.5-5.0mm。Preferably, the aluminum alloy composite bottom plate has a thickness of 0.5 to 5.0 mm.
优选地，发热管为铝合金发热管或者不锈钢发热管。Preferably, the heating tube is an aluminum alloy heating tube or a stainless steel heating tube.
发热盘中的所述底盘，可直接将热量传递到食物，可为不锈钢底盘或铝合金底盘。The chassis in the heating plate can directly transfer heat to the food, and can be a stainless steel chassis or an aluminum alloy chassis.
不锈钢底盘可制作成不锈钢冲压底片或者冲压桶状容器。The stainless steel chassis can be made into stainless steel stamped backsheets or stamped barrel containers.
同理，铝合金底盘也可制作成铝合金冲压底片或者冲压桶状容器。Similarly, the aluminum alloy chassis can also be made into an aluminum alloy stamped film or a stamped barrel container.
本实施例焊接后的结构示意图如图2所示。A schematic structural view after welding in this embodiment is shown in FIG. 2 .
焊接发热盘时，发热盘助焊剂只需涂在发热管底面、铝合金复合底板与不锈钢(或铝合金)接触的一面，无需像传统的工艺在发热管底面、铝合金复合底板与不锈钢接触的一面，均需先覆助焊剂再涂覆钎焊粉料，以致钎料与助焊剂的用量不可控，不均匀，而本申请避免了该种不良后果。由于钎焊粉料比表面积大，造成助焊剂消耗量增加，传统焊接发热盘的后果是发热盘焊渣多、冶金疏松疏孔多，影响导热及未来材料回收利用，而本申请因不需使用粉状钎料，因而消除了该种影响。When soldering the heating plate, the heating plate flux only needs to be applied on the bottom surface of the heating tube, the side of the aluminum alloy composite substrate and the stainless steel (or aluminum alloy), without the need of the traditional process in the bottom of the heating tube, the aluminum alloy composite substrate and the stainless steel. On the one hand, the flux is coated with the solder powder, so that the amount of the solder and the flux is uncontrollable and uneven, and the application avoids such adverse effects. Due to the large specific surface area of the brazing powder, the flux consumption is increased. The result of the traditional welding heating plate is that the heating plate has more welding slag, more metallurgical loose and porous holes, and affects heat conduction and future material recycling, and this application does not need to be used. Powdered solder, thus eliminating this effect.
总之，本实用新型使得钎焊焊接冶金质量高，消除了钎焊冶金疏松，使铝合金发热管通过铝合金底板向不锈钢或铝合金的传热效率有着较大的提升，而且铝合金回收率高，减少助焊剂的使用，并有利于环境保护；采用铝合金复合底板钎焊制得的发热盘，与单一的铝合金的钎料粉末、铝焊膏或者钎料片钎焊技术相比，可减少涂覆量，涂覆钎剂简单方便，可减少操作人员，实现自动化钎剂涂覆。In short, the utility model makes the metallurgical quality of the brazing welding high, eliminates the loose metallurgy of the brazing, and greatly improves the heat transfer efficiency of the aluminum alloy heating pipe through the aluminum alloy bottom plate to the stainless steel or the aluminum alloy, and the aluminum alloy has high recovery rate. , reducing the use of flux, and is conducive to environmental protection; the heating plate obtained by brazing aluminum alloy composite bottom plate, compared with a single aluminum alloy solder powder, aluminum solder paste or solder sheet brazing technology, Reducing the amount of coating, coating the flux is simple and convenient, reducing the operator and achieving automated flux coating.
最后应说明的是：显然，上述实施例仅仅是为清楚地说明本实用新型所作的举例，而并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引申出的显而易见的变化或变动仍处于本实用新型的保护范围之中。It should be noted that the above-described embodiments are merely illustrative of the invention and are not intended to limit the embodiments. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations. Obvious changes or variations resulting therefrom are still within the scope of the present invention.

Claims (8)

  1. 一种钎焊式铝合金复合底板，其特征在于，所述铝合金复合底板为1000、3000或6000系铝合金作为基材，再双面冶金复合4000系铝硅合金形成，单层所述4000系铝硅合金的厚度占总复合底板厚度的比例为5-15％。A brazed aluminum alloy composite bottom plate, characterized in that the aluminum alloy composite bottom plate is made of 1000, 3000 or 6000 series aluminum alloy as a substrate, and then double-sided metallurgical composite 4000 series aluminum-silicon alloy is formed, and the single layer is 4000 The ratio of the thickness of the aluminum-silicon alloy to the thickness of the total composite substrate is 5-15%.
  2. 一种包含权利要求1所述钎焊式铝合金复合底板的发热盘，其特征在于，所述发热盘从下到上依次包括焊接连接的底盘、所述铝合金复合底板和铝合金发热管，所述发热盘经钎焊焊接而成。A heating plate comprising the brazed aluminum alloy composite bottom plate according to claim 1, wherein the heating plate comprises, in order from bottom to top, a welded joint chassis, the aluminum alloy composite bottom plate and an aluminum alloy heat pipe. The heating plate is formed by brazing.
  3. 如权利要求2所述的发热盘，其特征在于，所述发热盘通过保护性气氛钎焊焊接而成。A heat generating disk according to claim 2, wherein said heat generating disk is brazed by a protective atmosphere.
  4. 如权利要求2所述的发热盘，其特征在于，所述铝合金复合底板的厚度为0.5-5.0mm。The heat generating disk according to claim 2, wherein said aluminum alloy composite substrate has a thickness of 0.5 to 5.0 mm.
  5. 如权利要求2所述的发热盘，其特征在于，所述发热管为铝合金发热管或者不锈钢发热管。The heat generating disk according to claim 2, wherein the heat generating tube is an aluminum alloy heat generating tube or a stainless steel heat generating tube.
  6. 如权利要求2所述的发热盘，其特征在于，所述底盘为不锈钢底盘或铝合金底盘。A heat generating disk according to claim 2, wherein said chassis is a stainless steel chassis or an aluminum alloy chassis.
  7. 如权利要求6所述的发热盘，其特征在于，所述不锈钢底盘为不锈钢冲压底片或者冲压桶状容器。A heating plate according to claim 6, wherein said stainless steel chassis is a stainless steel stamped backsheet or a stamped barrel container.
  8. 如权利要求6所述的发热盘，其特征在于，所述铝合金底盘为铝合金冲压底片或者冲压桶状容器。A heat generating disk according to claim 6, wherein said aluminum alloy chassis is an aluminum alloy stamped film or a stamped barrel container.
PCT/CN2019/081708 2018-04-13 2019-04-08 Brazed aluminum alloy composite bottom plate and heating coil WO2019196779A1 (en)

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