CN111390321A - Bottom surface brazing device and method for stainless steel electric heating appliance - Google Patents
Bottom surface brazing device and method for stainless steel electric heating appliance Download PDFInfo
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- CN111390321A CN111390321A CN202010180081.3A CN202010180081A CN111390321A CN 111390321 A CN111390321 A CN 111390321A CN 202010180081 A CN202010180081 A CN 202010180081A CN 111390321 A CN111390321 A CN 111390321A
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- 238000005485 electric heating Methods 0.000 title claims abstract description 161
- 238000005219 brazing Methods 0.000 title claims abstract description 144
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 128
- 239000010935 stainless steel Substances 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 46
- 229910052782 aluminium Inorganic materials 0.000 claims description 208
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 200
- 239000011248 coating agent Substances 0.000 claims description 90
- 238000000576 coating method Methods 0.000 claims description 90
- 238000003466 welding Methods 0.000 claims description 32
- 238000005498 polishing Methods 0.000 claims description 26
- 238000001816 cooling Methods 0.000 claims description 21
- 230000004907 flux Effects 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000007790 scraping Methods 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 11
- 229910000679 solder Inorganic materials 0.000 claims description 9
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 6
- 239000011737 fluorine Substances 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 239000011572 manganese Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 238000005476 soldering Methods 0.000 claims 3
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
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- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 206010063659 Aversion Diseases 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
-
- 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
- B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
-
- 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
- B23K3/00—Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods
- B23K3/08—Auxiliary devices therefor
- B23K3/085—Cooling, heat sink or heat shielding means
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
- B23K35/268—Pb as the principal constituent
-
- 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
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/362—Selection of compositions of fluxes
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
- B23K2103/20—Ferrous alloys and aluminium or alloys thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
The invention discloses a pot bottom brazing device and method for a stainless steel electric heating appliance. The device and the method are adopted for production and manufacturing, the processing technology is simple, the manufacturing cost is low, the production efficiency is high, the heating is uniform, the phenomenon that the appliance pot bottom is overheated is avoided, and the appliance pot bottom is guaranteed to have good non-adhesiveness.
Description
Technical Field
The invention belongs to the technical field of stainless steel electric heaters, and particularly relates to a bottom surface brazing device and method of a stainless steel electric heater.
Background
An electric heating appliance is an appliance for converting electric energy into heat energy, and is more and more popular in application as a necessary appliance in household appliances of modern daily life, such as an electric frying pan, an electric heating pan, an electric baking tray and the like. The existing electric heating appliances are mainly divided into aluminum electric heating appliances, non-stick coating aluminum electric heating appliances and stainless steel electric heating appliances. Because aluminum products are eliminated as materials of cookers because the aluminum products have great harm to human bodies, the stainless steel electric heating appliances are mainly used by people at present.
The existing stainless steel electric heating appliance is basically manufactured by adopting a production process of compounding an aluminum electric heating pipe, an aluminum sheet and a stainless steel appliance through high-frequency welding, but the manufacturing method adopting the process has the major defects: the contact head is consumed, the damage to the die is fast, the working efficiency of a single machine is low, the processing cost is high, and the current requirements of energy conservation and emission reduction are not met; has the defects of electric erosion, quick burning and great damage to the inner surface of a stainless steel appliance; moreover, the size and shape of the electric heating appliance can be deformed due to the small high-frequency heating range. Moreover, the stainless steel electric heating appliance manufactured by the process has high production cost and expensive price of the finished product, and is not beneficial to mass consumption and popularization.
Therefore, the traditional processing mode needs to be improved, the production efficiency is improved, and the product quality of the stainless steel electric heating appliance is ensured.
Disclosure of Invention
The invention aims to solve the problems of high loss, low efficiency and the like existing in the processing technology of the existing stainless steel appliance, and provides a bottom surface brazing device and method of a stainless steel electric heating appliance.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a bottom surface brazing device of stainless steel electric heating appliance, includes first roll table formula transmission band, second roll table formula transmission band, aluminum sheet braze welding coating mould, spot welder, aluminium electric heat pipe braze welding coating mould, framework heating furnace district and quick-witted wind cooling district, first roll table formula transmission band, aluminum sheet braze welding coating mould, spot welder, aluminium electric heat pipe braze welding coating mould, second roll table formula transmission band, framework heating furnace district, quick-witted wind cooling district connect gradually.
Further, the aluminum sheet brazing coating die comprises a support, a brazing scraper, an aluminum sheet-shaped coating upper die and a positioning die, wherein the positioning die is arranged on the plane of the support and used for placing the stainless steel electric heating appliance body; the aluminum sheet-shaped coating upper die is rotatably connected with the upper end of the support, and the support is further provided with a brazing scraper blade for scraping brazing on the bottom surface of the stainless steel electric heating appliance body.
Further, the aluminum electric heat pipe brazing coating die comprises a support, a brazing scraper, an aluminum electric heat pipe shape coating upper die and a positioning die, wherein the positioning die is arranged on the plane of the support and used for placing the stainless steel electric heating appliance body with the bottom surface provided with the aluminum sheet; the upper die for coating the shape of the aluminum electric heating pipe is rotatably connected with the upper end of the support, and the support is also provided with a brazing scraper blade for scraping brazing on the upper surface of the aluminum sheet.
Further, the frame body heating furnace area comprises a horizontal toughening furnace, a plurality of heating fans and a third roller way type conveying belt, the heating fans are connected with the horizontal toughening furnace, and the third roller way type conveying belt extends into the horizontal toughening furnace from one end and extends out from the other end;
or the machine air cooling area comprises a fourth roller way type conveying belt and a fan, and the fan outputs cold air to the stainless steel electric heating appliance assembly on the fourth roller way type conveying belt to cool and mold the stainless steel electric heating appliance assembly.
Furthermore, the polishing device also comprises a polishing area connected with the machine air cooling area, wherein the polishing area comprises a polishing clamp and a polishing wheel driven by a polishing machine, the polishing clamp clamps the stainless steel electric heating appliance assembly, and the polishing wheel removes oxide layers on the inner surface and the outer surface of the stainless steel electric heating appliance assembly, so that the stainless steel electric heating appliance assembly displays the natural color of stainless steel.
The invention also provides a bottom surface brazing method of the stainless steel electric heating appliance, which comprises the following steps:
s1, conveying the stainless steel electric heating appliance body to an aluminum sheet brazing coating die by a first roller conveyor belt, wherein the aluminum sheet brazing coating die coats the bottom of the electric heating appliance body with brazing with the same shape as an aluminum sheet;
s2, welding an aluminum sheet to the bottom of the electric heating appliance body provided with brazing by the spot welding machine;
s3, placing the electric heating appliance body with the aluminum sheet welded at the bottom on an aluminum electric heating pipe brazing coating die, coating brazing with the same shape as that of the aluminum electric heating pipe on the upper surface of the aluminum sheet by using the aluminum electric heating pipe brazing coating die, and then conveying and placing an upper aluminum electric heating pipe by using a second roller conveyor belt;
s4, placing a stainless steel electric heating appliance assembly consisting of an aluminum electric heating pipe, an aluminum sheet and a stainless steel electric heating appliance body into a frame body heating furnace area by a third roller conveyor belt for heating, melting and welding;
and S5, outputting the welded stainless steel electric heating appliance assembly to an air cooling area for cooling and forming.
Further, in the step S1, the first roller conveyor belt conveys the stainless steel electric heating appliance body to the aluminum sheet brazing coating die, and the stainless steel electric heating appliance body is inverted into the positioning die 14 of the aluminum sheet brazing coating die; coating brazing on the lower surface of an aluminum sheet shape coating upper die 13 of the aluminum sheet brazing coating die, scraping off redundant brazing 15 except for the shape of the aluminum sheet by using a brazing scraper 12, covering the aluminum sheet shape coating upper die 13 on the bottom surface of the stainless steel electric heating appliance body, then opening the aluminum sheet shape coating upper die 13 again, and at the moment, leaving uniformly coated brazing with the same size as the shape of the aluminum sheet on the stainless steel electric heating appliance body.
Further, step S2 is specifically to place the stainless steel electric heating appliance body coated with the brazing solder on a spot welding machine, perform spot welding of bolts at three positions, align the three slots of the aluminum sheet with the bolts, and place the aluminum sheet in the region coated with the brazing solder on the bottom of the stainless steel electric heating appliance body.
Further, in the step S3, the stainless steel electric heating appliance body with the aluminum sheet at the bottom is conveyed to the aluminum electric heating pipe brazing coating die by the second roller conveyor belt, and the stainless steel electric heating appliance body is inverted into the positioning die of the aluminum electric heating pipe brazing coating die; coating brazing on the lower surface of an aluminum electric heat pipe shape coating upper die of the aluminum electric heat pipe brazing coating die, scraping off redundant brazing 15 except the shape of the aluminum electric heat pipe by using a brazing scraper, covering the aluminum electric heat pipe shape coating upper die on the upper surface of the aluminum sheet, then opening the aluminum electric heat pipe shape coating upper die again, and at the moment, leaving uniformly coated brazing with the same size as the shape of the aluminum electric heat pipe on the upper surface of the aluminum sheet, and placing an aluminum electric heat pipe.
Further, in step S4, the third roller conveyor belt is configured to put a stainless steel electric heating device assembly, which is composed of an aluminum electric heating tube, an aluminum sheet, and a stainless steel electric heating device body, into the frame heating furnace area, and perform heating, melting and welding under preset conditions.
Furthermore, the thickness of the aluminum sheet is 1.5mm, the material is 8011 series deformed aluminum, the aluminum content is controlled to be more than 98%, the silicon content is controlled to be more than 0.27%, and the iron content is controlled to be between 0.7% and 0.8%.
Furthermore, the brazing flux for brazing comprises a high-temperature aluminum brazing flux and a high-temperature aluminum brazing filler metal, the high-temperature aluminum brazing flux and the high-temperature aluminum brazing filler metal are uniformly mixed in a ratio of 2:1 and then are uniformly mixed with water, and the ratio of the mixture of the high-temperature aluminum brazing flux and the high-temperature aluminum brazing filler metal to the water is 3: 1.
furthermore, the high-temperature aluminum brazing flux consists of elements such as potassium (30.1% -31.5%), fluorine (50.88% -52.68%) and aluminum (16.77% -18.07%), the melting point of the high-temperature aluminum brazing flux is 555 +/-5 ℃, and the degree of charge is distributed between 0.5 and 50; or the high-temperature aluminum brazing filler metal consists of elements of aluminum (87% -91%), silicon (11% -13%), iron is less than or equal to 0.2%, manganese is less than or equal to 0.05%, magnesium is less than or equal to 0.08%, fluorine is less than or equal to 0.03%, the melting point is 570-580 ℃, and the particle size distribution is-60.
Further, step S6, polishing the finished product, and polishing the oxide layers on the inner surface and the outer surface of the stainless steel electric heating appliance assembly formed by cooling to enable the surface of the stainless steel electric heating appliance assembly to present the natural color of stainless steel.
Compared with the prior art, the invention has the beneficial effects that: the device and the method are adopted for production and manufacturing, the processing technology is simple, the manufacturing cost is low, the production efficiency is high, the heating is uniform, the phenomenon that the bottom of the utensil pot is overheated is avoided, and the bottom surface of the utensil is guaranteed to have good non-adhesiveness.
Drawings
FIG. 1 is a schematic front view of a bottom surface brazing device of a stainless steel electric heating appliance;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic view of the coating workflow of the brazing area of stainless steel pot welded aluminum sheet;
FIG. 4 is a schematic view of the coating work flow of the brazing area of the aluminum sheet welded aluminum electric heat pipe;
FIG. 5 is a side view of the stainless steel pot, the aluminum sheet and the aluminum electric heating tube after being welded;
FIG. 6 is a schematic view of the bottom surface of the stainless steel pot, the aluminum sheet and the aluminum electric heating tube after being welded;
FIG. 7 is a schematic view of a stainless steel electric heating device pot which can be directly inserted for electric heating.
In the figure: 1-stainless steel electric heating appliance body, 101-bottom surface, 2-first roller conveyor belt, 3-aluminum sheet braze coating die, 4-aluminum sheet, 5-spot welding machine, 6-aluminum electric heating pipe braze coating die, 7-aluminum electric heating pipe shape braze, 8-aluminum electric heating pipe, 9-stainless steel electric heating appliance combination to be heated braze, 10-frame heating furnace area, 11-air cooling area, 12-braze scraper, 13-aluminum sheet shape coating upper die, 14-positioning die, 15-braze, 16-aluminum electric heating pipe braze coating die, 17-handle, 18-support, 19-aluminum electric heating pipe shape coating upper die, 20-second roller conveyor belt, 21-support, 22-horizontal toughening furnace, 23-heating fan, 24-third roller conveyor belt, 25-roller conveyor belt, 26-fan, 27-electrical control cabinet, 28-bolt.
Detailed Description
The technical scheme of the invention is further described and illustrated by specific embodiments below, so that the technical scheme is clearer and more obvious. Other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Example 1
The embodiment discloses a pot bottom brazing device of a stainless steel electric heating appliance, which comprises a first roller way type transmission belt 2, a second roller way type transmission belt 20, an aluminum sheet brazing coating die 3, a spot welding machine 5, an aluminum electric heat pipe brazing coating die 6, a frame body heating furnace area 10 and an air cooling area 11, wherein the first roller way type transmission belt 2, the aluminum sheet brazing coating die 3, the spot welding machine 5, the aluminum electric heat pipe brazing coating die 6, the second roller way type transmission belt 20, the frame body heating furnace area 10 and the air cooling area 11 are sequentially connected with one another as shown in fig. 1-2. The stainless steel electric heating appliance body 1 shown in the figure of the embodiment is a stainless steel pan body.
The aluminum sheet brazing coating die 3 provided in the embodiment of the invention comprises a bracket 21, a brazing scraper 12, an aluminum sheet shape coating upper die 13 and a positioning die 14, as shown in fig. 3, wherein the positioning die 14 is arranged on the plane of the bracket 21 and is used for placing a stainless steel electric heating appliance body 1, and the stainless steel electric heating appliance body 1 is inverted on the positioning die 14, namely the bottom surface 101 of the stainless steel electric heating appliance body 1 is placed upwards; the aluminum sheet-shaped coating upper die 13 is rotatably connected with the upper end of the support 21, and the support 21 is further provided with a brazing scraper 12 for scraping the brazing of the bottom surface of the stainless steel electric heating appliance body.
The embodiment provides an aluminum electric heat pipe brazing coating die 6 with a structure, as shown in fig. 4, comprising a bracket 21, a brazing scraper 12, an aluminum electric heat pipe shape coating upper die 19 and a positioning die 14, wherein the positioning die 14 is arranged on the plane of the bracket 21 and is used for placing a stainless steel electric heating appliance body 1 with an aluminum sheet on the bottom surface; the upper die 19 for coating the shape of the aluminum electric heating pipe is rotatably connected with the upper end of a support 21, and a brazing scraper 12 for scraping brazing on the upper surface of the aluminum sheet is further arranged on the support.
As shown in fig. 1 and 2, the frame heating furnace zone 10 of the present embodiment includes a horizontal toughening furnace 22, a plurality of heating fans 23 connected to the horizontal toughening furnace, and a third roller conveyor 24 extending from one end of the horizontal toughening furnace and extending from the other end of the horizontal toughening furnace. The frame body heating furnace area 10 is divided into a plurality of areas, and heating fans are arranged in different areas to improve the heating balance effect, so that the heating brazing effect is ensured.
The machine air cooling area 11 of this embodiment includes a fan 26 and a fourth roller conveyor belt 25, and the fan outputs cold air to the stainless steel electric heating appliance assembly on the fourth roller conveyor belt to cool and mold the stainless steel electric heating appliance assembly.
This pot bottom brazing device still includes the polishing district of being connected with quick-witted wind cooling district 11, including polishing district including polishing anchor clamps and by the throwing aureola of burnishing machine drive, polishing anchor clamps clip stainless steel electric heating appliance assembly (mainly clip stainless steel electric heating appliance body), take place the aversion when avoiding polishing, the oxide layer of the inside and outside surface of stainless steel electric heating appliance assembly is thrown to throwing aureola for stainless steel electric heating appliance assembly shows for stainless steel true qualities.
In this embodiment, heating fan can the independent control air-out, also can be connected with an electrical control cabinet simultaneously and receive electrical control cabinet's unified control, and electrical control cabinet and heating fan all adopt the equipment that has now on the market.
Example 2
Corresponding to the bottom surface brazing device in the embodiment 1, the embodiment provides a bottom surface brazing method of a stainless steel electric heating appliance, which comprises the following steps:
s1, conveying the stainless steel electric heating appliance body to an aluminum sheet brazing coating die by a first roller conveyor belt, wherein the aluminum sheet brazing coating die coats the bottom of the electric heating appliance body with brazing with the same shape as an aluminum sheet;
s2, welding an aluminum sheet to the bottom of the electric heating appliance body provided with brazing by the spot welding machine;
s3, placing the electric heating appliance body with the aluminum sheet welded at the bottom into an aluminum electric heating pipe brazing coating die, wherein the aluminum electric heating pipe brazing coating die coats brazing with the same shape as the aluminum electric heating pipe on the upper surface of the aluminum sheet and is used for placing an aluminum electric heating pipe;
s4, placing a stainless steel electric heating appliance assembly consisting of an aluminum electric heating pipe, an aluminum sheet and a stainless steel body into a frame body heating furnace area by using a second roller conveyor belt for heating, melting and welding;
and S5, outputting the welded stainless steel electric heating appliance assembly to an air cooling area for cooling and forming.
As shown in fig. 1-3, step S1 specifically includes: the first roller conveyor belt 2 conveys the stainless steel electric heating appliance body 1 to the aluminum sheet brazing coating die 3, and inverts the stainless steel electric heating appliance body 1 into the positioning die 14 of the aluminum sheet brazing coating die; coating brazing on the lower surface of an aluminum sheet shape coating upper die 13 of the aluminum sheet brazing coating die, scraping off redundant brazing except for the shape of the aluminum sheet by using a brazing scraper 12, covering the aluminum sheet shape coating upper die 13 on the bottom surface of the stainless steel electric heating appliance body 1, then opening the aluminum sheet shape coating upper die 13 again, and at the moment, leaving uniformly coated brazing 15 with the same shape and size as the shape and size of the aluminum sheet 4 on the bottom surface of the stainless steel electric heating appliance body 1.
Then, step S2 is executed, as shown in fig. 1, fig. 2, fig. 5, and fig. 6, specifically: the stainless steel electric heating appliance body 1 coated with the brazing is placed on a spot welding machine 5, the bolts 28 at three positions are spot-welded, then the three clamping grooves of the aluminum sheet 4 are aligned to the bolts 28, and the stainless steel electric heating appliance body 1 is placed on the bottom of the stainless steel electric heating appliance body 1 coated with the brazing.
As shown in fig. 1, fig. 2 and fig. 4, step S3 specifically includes: the second roller conveyor belt 20 conveys the stainless steel electric heating appliance body 1 with the bottom provided with the aluminum sheet to the aluminum electric heat pipe brazing coating die 6, and the stainless steel electric heating appliance body 1 is inverted into a positioning die of the aluminum electric heat pipe brazing coating die 6; coating brazing on the lower surface of an aluminum electric heat pipe shape coating upper die 19 of the aluminum electric heat pipe brazing coating die, scraping off redundant brazing except for the aluminum electric heat pipe shape brazing 7 by using a brazing scraper 12, covering the aluminum electric heat pipe shape coating upper die 19 on the upper surface of an aluminum sheet 4, then opening the aluminum electric heat pipe shape coating upper die 19 again, leaving uniformly coated brazing which is equal to the aluminum electric heat pipe shape in size on the upper surface of the aluminum sheet, namely the aluminum electric heat pipe shape brazing 7, placing an aluminum electric heating pipe 8, and then arranging the whole to-be-heated brazed stainless steel electric heating appliance assembly 9 as shown in fig. 5 and 6.
In step S4, the third roller conveyor 24 puts the stainless steel electric heating device assembly 9, which is composed of the aluminum electric heating tube 8, the aluminum sheet 4, and the stainless steel electric heating device body 1, into the frame heating furnace zone 10, and performs heating fusion welding under preset conditions. The preset conditions refer to preset process conditions such as time, temperature, rotating speed of a heating fan and the like, and the preset time for automatic fusion welding is 20 minutes.
For example, the temperature of a frame heating furnace area of the horizontal tempering furnace is firstly set to 640 ℃, the rotating speed of a heating fan is adjusted to 18 revolutions per minute, namely the brazing time is controlled to be 20 minutes per pot, and the furnace temperature of the frame heating furnace area is controlled to be within the range of 640 +/-5 ℃, so that the expansion shape of the stainless steel pot body in the furnace is changed regularly, the full contact between an aluminum sheet and the pot body is facilitated, and the phenomenon of false welding during brazing is avoided.
The horizontal tempering furnace of the embodiment adopts an alternating current frequency conversion technology for transmission of each part, the speed of motor drive and reciprocating drive is adjustable, the operation control of each part is automatically completed by a control system consisting of an industrial computer and P L C, the wind pressure of an air supply system is automatically adjusted, a transmission roller way in the furnace adopts a quartz ceramic roller way, a transmission mechanism of the roller way adopts an O-shaped belt and a linkage synchronous transmission belt, a frame heating furnace area 10 adopts a convection mode as a main heating mode, a plurality of heating subareas are provided, and the temperature in the furnace is more uniform.
The thickness of the aluminum sheet 4 in this example is 1.5mm, the material is 8011 series wrought aluminum, the aluminum content is controlled to be more than 98%, the silicon content is controlled to be more than 0.27%, and the iron content is controlled to be between 0.7% and 0.8%.
The brazing flux used in the embodiment includes a high-temperature aluminum flux and a high-temperature aluminum solder, the high-temperature aluminum flux and the high-temperature aluminum solder are uniformly mixed in a ratio of 2:1, and the ratio of the mixture of the high-temperature aluminum flux and the high-temperature aluminum solder to water is 3: 1, namely the brazing flux (solder) accounts for 75 percent, and the water accounts for 25 percent, and the mixture is uniformly stirred.
The high-temperature aluminum brazing flux mainly comprises elements such as potassium (30.1% -31.5%), fluorine (50.88% -52.68%), aluminum (16.77% -18.07%) and the like, the melting point of the high-temperature aluminum brazing flux is 555 +/-5 ℃, and the degree of charge is distributed between 0.5 and 50.
The high-temperature aluminum brazing filler metal mainly comprises elements such as aluminum (87% -91%), silicon (11% -13%), iron is less than or equal to 0.2%, manganese is less than or equal to 0.05%, magnesium is less than or equal to 0.08%, fluorine is less than or equal to 0.03%, the melting point is 570-580 ℃, and the particle size distribution is-60.
The brazing method also comprises the step S6 of polishing finished products, and polishing the oxide layers on the inner surface and the outer surface of the stainless steel electric heating appliance assembly formed by cooling so that the surface of the stainless steel electric heating appliance assembly presents the natural color of stainless steel.
The method is adopted to braze the bottom surface of the stainless steel electric heating appliance, the processing technology is simple, the production efficiency is improved, the production cost is low, and the market competitiveness is strong; the stainless steel electric heating appliance is formed by smelting the body, the aluminum sheet and the aluminum electric heating pipe of the stainless steel electric heating appliance, so that the stainless steel electric heating appliance can be made into a pot and a disc, size and dimension switches can be made at will, and meanwhile, the pot body is made of stainless steel, so that the appearance is attractive, safe and sanitary, and environment-friendly; the multilayer welding greatly improves the heating efficiency of the stainless steel utensil and accelerates the cooking speed; the production method of the process can lead the product to have even conduction, good heat conduction state and high temperature resistance, and the adoption of the 304-grade stainless steel electric heating appliance meets the food-grade safety and high market acceptance, and meets the requirements of popular consumption health and cost.
The above is the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and variations and modifications made by those skilled in the art according to the design concept of the present invention should be considered to be within the scope of the present invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (10)
1. The utility model provides a bottom surface brazing device of stainless steel electric heating appliance, its characterized in that, includes first roll table formula transmission band, second roll table formula transmission band, aluminum sheet braze welding and scribbles mould, spot welder, aluminium electric heat pipe braze welding and scribble mould, framework heating furnace district and quick-witted wind cooling district, first roll table formula transmission band, aluminum sheet braze welding and scribble mould, spot welder, aluminium electric heat pipe braze welding and scribble mould, second roll table formula transmission band, framework heating furnace district, quick-witted wind cooling district connect gradually.
2. The bottom surface brazing device of a stainless steel electric heating appliance according to claim 1, wherein the aluminum sheet brazing coating die comprises a support, a brazing scraper, an aluminum sheet shape coating upper die and a positioning die, and the positioning die is arranged on the plane of the support and used for placing the stainless steel electric heating appliance body; the aluminum sheet-shaped coating upper die is rotatably connected with the upper end of the support, and the support is further provided with a brazing scraper blade for scraping brazing on the bottom surface of the stainless steel electric heating appliance body.
3. The bottom surface brazing device of a stainless steel electric heating appliance according to claim 1, wherein the aluminum electric heating pipe brazing coating die comprises a support, a brazing scraper, an aluminum electric heating pipe shape coating upper die and a positioning die, and the positioning die is arranged on the plane of the support and used for placing a stainless steel electric heating appliance body with an aluminum sheet on the bottom surface; the upper die for coating the shape of the aluminum electric heating pipe is rotatably connected with the upper end of the support, and the support is also provided with a brazing scraper blade for scraping brazing on the upper surface of the aluminum sheet.
4. The bottom surface brazing device of a stainless steel electric heating appliance according to claim 1, 2 or 3, wherein the frame body heating furnace area comprises a horizontal toughening furnace, a plurality of heating fans and a third roller conveyor belt, the heating fans are connected with the horizontal toughening furnace, and the third roller conveyor belt extends into one end of the horizontal toughening furnace and extends out of the other end;
or the machine air cooling area comprises a fourth roller way type conveying belt and a fan, and the fan outputs cold air to the stainless steel electric heating appliance assembly on the fourth roller way type conveying belt to cool and mold the stainless steel electric heating appliance assembly.
5. The bottom surface soldering device for a stainless steel electric heating appliance according to claim 4, further comprising a polishing area connected with the machine air cooling area, wherein the polishing area comprises a polishing clamp and a polishing wheel driven by a polishing machine, the polishing clamp clamps the stainless steel electric heating appliance assembly, and the polishing wheel polishes the oxide layers on the inner surface and the outer surface of the stainless steel electric heating appliance assembly, so that the stainless steel electric heating appliance assembly is displayed as stainless steel.
6. A bottom surface brazing method of a stainless steel electric heating appliance is characterized by comprising the following steps:
s1, conveying the stainless steel electric heating appliance body to an aluminum sheet brazing coating die by a first roller conveyor belt, wherein the aluminum sheet brazing coating die coats the bottom of the electric heating appliance body with brazing with the same shape as an aluminum sheet;
s2, welding an aluminum sheet to the bottom of the electric heating appliance body provided with brazing by the spot welding machine;
s3, placing the electric heating appliance body with the aluminum sheet welded at the bottom on an aluminum electric heating pipe brazing coating die, coating brazing with the same shape as that of the aluminum electric heating pipe on the upper surface of the aluminum sheet by using the aluminum electric heating pipe brazing coating die, and then conveying and placing an upper aluminum electric heating pipe by using a second roller conveyor belt;
s4, placing a stainless steel electric heating appliance assembly consisting of an aluminum electric heating pipe, an aluminum sheet and a stainless steel electric heating appliance body into a frame body heating furnace area by a third roller conveyor belt for heating, melting and welding;
and S5, outputting the welded stainless steel electric heating appliance assembly to an air cooling area for cooling and forming.
7. The method for brazing the bottom surface of a stainless steel electric heating appliance according to claim 6, wherein the step S1 is specifically that the first roller conveyor belt conveys the stainless steel electric heating appliance body to the aluminum sheet brazing coating die, and the stainless steel electric heating appliance body is inverted into the positioning die 14 of the aluminum sheet brazing coating die; coating brazing on the lower surface of an aluminum sheet-shaped coating upper die 13 of the aluminum sheet brazing coating die, scraping off redundant brazing 15 except the aluminum sheet shape by using a brazing scraper 12, covering the aluminum sheet-shaped coating upper die 13 on the bottom surface of the stainless steel electric heating appliance body, then opening the aluminum sheet-shaped coating upper die 13 again, and at the moment, leaving uniformly coated brazing with the same size as the aluminum sheet shape on the stainless steel electric heating appliance body;
or, in the step S2, the stainless steel electric heating appliance body coated with the brazing is placed on a spot welding machine, bolt spot welding is performed at three positions, then three clamping grooves of the aluminum sheet are aligned with the bolts, and the stainless steel electric heating appliance body is placed on the region coated with the brazing on the bottom;
or, in the step S3, the second roller conveyor belt conveys the stainless steel electric heating appliance body with the aluminum sheet at the bottom to the aluminum electric heating pipe brazing coating die, and the stainless steel electric heating appliance body is inverted into the positioning die of the aluminum electric heating pipe brazing coating die; coating brazing on the lower surface of an aluminum electric heat pipe-shaped coating upper die of the aluminum electric heat pipe brazing coating die, scraping off the excessive brazing 15 except the shape of the aluminum electric heat pipe by using a brazing scraper, covering the aluminum electric heat pipe-shaped coating upper die on the upper surface of the aluminum sheet, then opening the aluminum electric heat pipe-shaped coating upper die again, and at the moment, leaving uniformly coated brazing with the same size as the shape of the aluminum electric heat pipe on the upper surface of the aluminum sheet, and placing an aluminum electric heat pipe;
or, in the step S4, the third roller conveyor belt puts a stainless steel electric heating appliance assembly composed of an aluminum electric heating tube, an aluminum sheet and a stainless steel electric heating appliance body into the frame body heating furnace area, and performs heating, melting and welding under a preset condition;
or the thickness of the aluminum sheet is 1.5mm, the material is 8011 series deformed aluminum, the aluminum content is controlled to be more than 98%, the silicon content is controlled to be more than 0.27%, and the iron content is controlled to be between 0.7% and 0.8%.
8. A method for soldering the bottom surface of an electric stainless steel heating device according to claim 6 or 7, wherein the soldering flux comprises a high temperature aluminum flux and a high temperature aluminum solder, the high temperature aluminum flux and the high temperature aluminum solder are uniformly mixed in a ratio of 2:1, and then are uniformly mixed with water, and the ratio of the mixture of the high temperature aluminum flux and the high temperature aluminum solder to the water is 3: 1.
9. the bottom brazing method of a stainless steel electric heating appliance according to claim 8, wherein the high-temperature aluminum brazing flux is composed of elements such as potassium (30.1% -31.5%), fluorine (50.88% -52.68%) and aluminum (16.77% -18.07%), the melting point of the brazing flux is 555 +/-5 ℃, and the degree of charge is distributed between 0.5 and 50;
or the high-temperature aluminum brazing filler metal consists of elements of aluminum (87% -91%), silicon (11% -13%), iron is less than or equal to 0.2%, manganese is less than or equal to 0.05%, magnesium is less than or equal to 0.08%, fluorine is less than or equal to 0.03%, the melting point is 570-580 ℃, and the particle size distribution is-60.
10. The method for brazing the bottom surface of a stainless steel electric heating appliance according to claim 6 or 7, further comprising step S6, polishing the finished product, and polishing the oxide layers on the inner and outer surfaces of the cooled and formed stainless steel electric heating appliance assembly to make the surface of the stainless steel electric heating appliance assembly show the natural color of stainless steel.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114769773A (en) * | 2022-05-19 | 2022-07-22 | 浙江飞剑工贸有限公司 | Titanium heating plate brazing method |
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Country or region after: China Address after: 321000 Tongqin Hardware Machinery Industrial Park, Jinhua City, Zhejiang Province Applicant after: Zhejiang Weijiang Electric Appliance Co.,Ltd. Address before: 321200 No.17, Weier East Road, hardware industrial park, Tongqin Town, Wuyi County, Jinhua City, Zhejiang Province Applicant before: ZHEJIANG WEIJIANG ELECTRIC APPLIANCE Co.,Ltd. Country or region before: China |