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WO2009149614A1 - 压铸复底锅及其制造工艺 - Google Patents

压铸复底锅及其制造工艺 Download PDF

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Publication number
WO2009149614A1
WO2009149614A1 PCT/CN2009/000314 CN2009000314W WO2009149614A1 WO 2009149614 A1 WO2009149614 A1 WO 2009149614A1 CN 2009000314 W CN2009000314 W CN 2009000314W WO 2009149614 A1 WO2009149614 A1 WO 2009149614A1
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WO
WIPO (PCT)
Prior art keywords
die
casting
composite
sheet
aluminum alloy
Prior art date
Application number
PCT/CN2009/000314
Other languages
English (en)
French (fr)
Inventor
朱金洪
Original Assignee
Zhu Jinhong
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhu Jinhong filed Critical Zhu Jinhong
Publication of WO2009149614A1 publication Critical patent/WO2009149614A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/002—Construction of cooking-vessels; Methods or processes of manufacturing specially adapted for cooking-vessels
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay

Definitions

  • the invention relates to a die-casting double bottom pot and a manufacturing process thereof.
  • the multi-bottomed pans that can be used for the induction cooker are mostly mechanical riveting type multi-bottomed pans which are mechanically extruded from the stainless iron backsheet and the pot body, because the bottom of the double-bottomed pan body is riveted with the rusted iron backsheet by rivets.
  • the stainless iron backsheet has a riveted through hole, and the metal portion which generates the eddy current at the bottom has a small effective effective area, so the thermal efficiency is low, and there are defects such as complicated manufacturing of the mold and the parts, poor connection strength, and the like; Unevenness not only affects the appearance, but also causes damage to the surface of the induction cooker.
  • 200720127832.5 discloses a die-casting double-bottomed pan which has a blind hole formed in the stainless steel backsheet, and the pot body and the complex film are fused together during die casting. Since it is connected to the pot body by means of a stud formed by the aluminum liquid filled in the blind hole, if the back film is thin, the depth of the blind hole is shallow, and the connection between the back film and the pot body is The strength is low; if the back film is thick, there is no doubt that the production cost is high.
  • the connection between the composite film and the pot body of the double bottom pot mainly depends on the convex column formed in the blind hole. Since the thermal expansion coefficients of the aluminum alloy and the stainless steel are different, the double bottom pot is resistant to cold and heat. The low thermal fatigue performance will undoubtedly affect its service life.
  • an object of the present invention is to provide a die-casting multi-bottomed pan which is strong in connection, high in thermal efficiency, stable in thermal fatigue resistance, and simple in manufacturing process, and a manufacturing process thereof.
  • a die-casting multi-bottomed pan comprising an aluminum alloy pot body and a composite backsheet integrally molded with the lower portion of the pot body, characterized in that the composite back sheet is rolled from a composite material sheet and a stainless iron sheet.
  • the composite material sheet is provided with a plurality of annular grooves, and the annular groove has at least one side wall which is an inner oblique side wall.
  • the composite sheet of the present invention is made of pure aluminum or aluminum alloy or other material having a coefficient of linear expansion close to that of the aluminum alloy.
  • the manufacturing process of the above die-casting double bottom pot includes the following steps:
  • the composite film Since the composite film is die-cast integrally with the lower portion of the die-casting pot body, the molten aluminum liquid during the die casting will fill the annular groove on the composite film, and at least one side wall of the annular groove is the inner oblique side wall, thereby
  • the connection between the bottom film and the pot body is very strong, preventing the back film from being separated from the pot body, and prolonging the service life of the die-casting double bottom pot. Since the linear expansion coefficient of the composite sheet and the pot body is similar, the die casting pot is minimally affected by cold and heat exchange, and the thermal fatigue resistance is extremely high.
  • the composite film of the present invention has a simple structure and convenient production, and the entire manufacturing process is also very simple, which can greatly reduce the production cost and effectively improve the competitiveness of the product.
  • Figure 1 is a schematic view of the structure of the present invention.
  • Figure 2 is a schematic view showing the structure of a double film.
  • Fig. 3 is a cross-sectional view taken along line A-A of Fig. 2; Replacement page ⁇ Details Article 26) Instruction manual
  • Figure 4 is a partial enlarged view of a portion B in Figure 3.
  • 1 indicates an aluminum alloy pot
  • 2 indicates a composite sheet
  • 3 indicates a stainless iron sheet
  • 4 indicates a ring-shaped groove.
  • the die-casting multi-bottom pan comprises an aluminum alloy pot body 1 and a composite bottom sheet integrally molded with the lower part of the pot body, and the composite bottom sheet is rolled and composited from the composite material sheet 2 and the stainless iron sheet 3, and the composite material is obtained.
  • the sheet 2 is provided with a plurality of annular grooves 4, and both sides of the annular groove 4 are inner inclined side walls.
  • the composite sheet 2 can be made of pure aluminum or aluminum alloy or other linear expansion.
  • the monthly length coefficient is made of a material close to the aluminum alloy.
  • the above-mentioned die-casting multi-bottom pan can be manufactured by the following process: First, a composite film is prepared: a composite film 2 and a stainless iron piece 3 are rolled and composited to form a composite film, and then the composite film is punched and formed, and then the annular film is machined on the double film. Slot 4. The second is to place the complex film: The composite film is molded into a mold cavity. Then die-casting: After the die-casting machine starts working, after the die-casting mandrel is clamped, the pressure ratio of the die-casting machine is 700kg/cm 2 , and the molten aluminum alloy is sprayed at a temperature of 600 ° C at a jet speed of 40 m/s.
  • the filling time is 0.05 seconds.
  • the pot body and the above complex film are die-cast into one by a die casting machine.
  • the surface treatment After the die-casting pot is cooled, the flash edge on the pot body is removed, and then sandblasting and spraying treatment are performed to obtain a die-casting double bottom pot.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Cookers (AREA)

Description

说 明 书
压铸复底锅及其制造工艺
技术械
本发明涉及一种压铸复底锅及其制造工艺。
背景技术
目前， 可用于电磁炉的复底锅多为采用机械将不锈铁底片和锅体挤压成型 的机械铆合式复底锅， 由于这种复底锅锅体底部与不锈铁底片通过铆钉铆合， 不锈铁底片上有铆合通孔， 其底部产生涡流的金属部分实际有效面积较小， 故 热效率较低， 且存在模具及零部件制造复杂， 连接强度差等缺陷； 而不锈铁底 片不平整， 不仅影响美观， 而且对电磁炉表面也会造成损伤。 由此， 专利申请 号为 200720127832.5的中国实用新型专利公开了一种压铸复底锅， 它是在不锈 铁复底片上开有盲孔， 在压铸时将锅体和复底片融合在一起。 由于它是依靠填 充在盲孔内的铝液形成的凸柱将复底片和锅体连接在一起的 , 如果复底片较薄， 则盲孔的深度较浅， 复底片和锅体之间的连接强度就低； 如果复底片较厚， 则 无疑存在生产成本高的缺点。 另外， 该复底锅的复底片和锅体的连接主要依靠 盲孔内形成的凸柱， 由于铝合金和不锈铁的热膨胀系数不一， 该复底锅在冷、 热交替作用下， 耐热疲劳性能较低， 无疑会影响其使用寿命。
发明内容
针对上述问题,本发明的目的是提供一种连接牢固、 热效率高、 耐热疲劳性 能稳定并且制造工艺简单的压铸复底锅及其制造工艺。
本发明的目的是以如下方式实现的： 一种压铸复底锅， 包括铝合金锅体及 与锅体下部压铸成一体的复底片， 其特点是复底片由复合材料片和不锈铁片轧 制复合而成， 复合材料片上设有若干环形凹槽， 环形凹槽至少有一侧壁为内斜 侧壁。
替换页（细则第 26条） 说 明 书
本发明的复合材料片采用纯铝或铝合金或线膨胀系数与铝合金接近的其它 材料制成。
上述压铸复底锅的制造工艺包括以下步骤：
( 1 ) 制作复底片： a.将复合材料片与不锈铁片轧制复合； b.将复底片冲裁成形； c.在复底片上加工环形凹槽；
(2) 放置复底片： 将复底片放入压铸模定模型腔；
( 3 )压铸： 待压铸机开始工作， 压铸机动定模合模后， 使压铸机压射比压值达 到 200-1000kg/cm2, 将熔融状态温度为 500-700°C液态铝合金以 10-60m/s 的喷射速度充填入型腔,充填时间为 0.02- 0.09秒， 待铝液充满型腔后， 锅 体与上述复底片即通过压铸机压铸成型为一体；
( 4 )表面处理： 待压铸锅冷却后， 去除锅体上的飞边， 再进行喷砂、 喷涂处理， 即可制得压铸复底锅。
由于复底片是与压铸锅锅体下部压铸成一体的， 在压铸时熔融的铝液会充 满复底片上的环形凹槽， 而环形凹槽至少有一侧的側壁为内斜侧壁， 因此可使 复底片与锅体的连接非常牢固， 防止复底片与锅体脱离， 可延长压铸复底锅的 使用寿命。 由于复合材料片与锅体的线膨胀系数相近， 因此压铸锅受冷、 热交 替作用的影响极小， 耐热疲劳稳定性极高。 另外， 本发明中的复底片结构简单、 生产方便， 且整个制造工艺也十分简单， 可大大降低生产成本， 有效地提高产 品的竟争力。
附图说明
图 1为本发明的结构示意图。
图 2为复底片的结构示意图。
图 3为图 2的 A- A剖视图。 替换页 ^细则第 26条） 说 明 书
图 4为图 3中 B部的局部放大图。
图中： 1表示铝合金锅体； 2表示复合材料片； 3表示不锈铁片； 4表示环 形凹槽。
具体实施方式
以下将结合附图并通过实施例对本发明作进一步的描述。
参照图 1〜图 4, 压铸复底锅包括铝合金锅体 1和与锅体下部压铸成一体的 复底片， 复底片由复合材料片 2和不锈铁片 3轧制复合而成， 复合材料片 2上 开有若干环形凹槽 4,环形凹槽 4两侧均为内斜侧壁， 为了提高压铸锅的耐热疲 劳稳定性， 复合材料片 2可采用纯铝或铝合金或其它线膨月长系数与铝合金接近 的材料制成。 上述压铸复底锅可以如下工艺制造： 首先制作复底片： 将复合材 料片 2与不锈铁片 3轧制复合形成复底片， 再将复底片冲裁成形， 然后在复底 片上车加工环形凹槽 4。 其次是放置复底片： 将复底片^压铸模定模型腔。接 着进行压铸： 待压铸机开始工作， 压铸机动定模合模后， 使压铸机压射比压值 达到 700kg/cm2, 将熔融状态温度为 600°C液态铝合金以 40m/s的喷射速度充填 入型腔，充填时间为 0.05秒， 待铝液充满型腔后， 锅体与上述复底片即通过压铸 机压铸成型为一体。 最后是表面处理： 待压铸锅冷却后， 去除锅体上的飞边， 再进行喷砂、 喷涂处理， 即可制得压铸复底锅。
替换页（细则第 26条)

Claims

权 利 要 求 书
1. 一种压铸复底锅， 包括铝合金锅体（ 1 )及与锅体下部压铸成一体的复底片， 其特征在于复底片由复合材料片 （2 )和不锈铁片 （3 )轧制复合而成， 复合 材料片 （2 )上设有若干环形凹槽（4 ), 环形凹槽（4 )至少有一侧壁为内斜 侧壁。
2.根据权利要求 1所述的压铸复底锅， 其特征在于复合材料片 （2 )采用纯铝或 铝合金或其它线膨胀系数与铝合金接近的材料制成。
3.一种如权利要求 1所述压铸复底锅的制造工艺， 其特征在于包括以下步骤： ( 1 )制作复底片： a.将复合材料片与不锈铁片轧制复合；
b.将复底片冲裁成形； - c.在复底片上加工环形凹槽；
( 2 )放置复底片： 将复底片放入压铸模定模型腔；
( 3 )压铸： 待压铸机开始工作， 压铸机动定模合模后， 使压铸机压射比压值达 到 200-1000kg/cm2, 将熔融状态温度为 500-700°C液态铝合金以 10-60m/s 的喷射速度充樣入型腔，充填时间为 0.02-0.09秒， 待铝液充满型腔后， 锅 体与上述复底片即通过压铸机压铸成型为一体；
( 4 )表面处理： 待压铸锅冷却后， 去除锅体上的飞边，再进行喷砂、 喷涂处理， 即可制得压铸复底锅。
替换页（细则第 26条)
PCT/CN2009/000314 2008-06-13 2009-03-25 压铸复底锅及其制造工艺 WO2009149614A1 (zh)

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CN200810062506XA CN101332041B (zh) 2008-06-13 2008-06-13 压铸复底锅及其制造工艺

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2732675A4 (en) * 2011-07-14 2015-04-01 Tsi Technologies Llc INDUCTION HEATING SYSTEM WITH INDUCTION HEATED CIRCUIT BOXES
CN116944886A (zh) * 2023-08-11 2023-10-27 广东省宝鼎不锈钢制品有限公司 一种金属锅体自动压合成型方法

Families Citing this family (8)

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CN101332041B (zh) * 2008-06-13 2010-09-15 朱金洪 压铸复底锅及其制造工艺
CN201790585U (zh) * 2010-08-03 2011-04-13 中山市高美能炊具电器制品有限公司 一种铝合金炊具新型组合锅底
CN103317201A (zh) * 2012-09-27 2013-09-25 潘国相 一种铝锅的钎焊方法及其所应用的铝基焊料
CN104873091A (zh) * 2015-05-18 2015-09-02 平顶山市美伊金属制品有限公司 一种生铁少油烟不粘锅
CN107550233A (zh) * 2017-08-04 2018-01-09 浙江伯是购厨具有限公司 一种铝锅及其新复底工艺
CN110125270A (zh) * 2019-05-28 2019-08-16 浙江康家宝炊具有限公司 一种复底铝锅及其制造方法
CN114532847A (zh) * 2022-01-28 2022-05-27 浙江康都日用品有限公司 一种咖啡壶底座及其加工方法
CN117045124A (zh) * 2023-07-22 2023-11-14 湖北爱仕达电器有限公司 一种复底锅及制造方法

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EP2732675A4 (en) * 2011-07-14 2015-04-01 Tsi Technologies Llc INDUCTION HEATING SYSTEM WITH INDUCTION HEATED CIRCUIT BOXES
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CN116944886A (zh) * 2023-08-11 2023-10-27 广东省宝鼎不锈钢制品有限公司 一种金属锅体自动压合成型方法

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