CN104827178B - The manufacture method of heat exchanger plates - Google Patents
The manufacture method of heat exchanger plates Download PDFInfo
- Publication number
- CN104827178B CN104827178B CN201510103658.XA CN201510103658A CN104827178B CN 104827178 B CN104827178 B CN 104827178B CN 201510103658 A CN201510103658 A CN 201510103658A CN 104827178 B CN104827178 B CN 104827178B
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- exchanger plates
- copper plate
- stainless steel
- manufacture method
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/26—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass heat exchangers or the like
-
- 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
- B23K1/005—Soldering by means of radiant energy
-
- 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
- B23K1/008—Soldering within a furnace
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/06—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of high energy impulses, e.g. magnetic energy
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
- B23K20/227—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded with ferrous layer
-
- 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
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/14—Heat exchangers
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
-
- 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
- B23K2103/22—Ferrous alloys and copper or alloys thereof
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of manufacture method of heat exchanger plates, this method comprises the following steps：A, three pieces of stainless steel materials of offer and one piece of copper plate；B, stainless steel materials and copper plate are first passed through to pickling carry out oil removal treatment；C, the copper plate after oil removing is put into potassium fluorozirconate solution and invades bubble, invade the bubble time for 2 to 3 minutes, the temperature of potassium fluorozirconate solution is at 95 to 98 degrees Celsius；D, the copper plate that will be invaded in potassium fluorozirconate solution after steeping are taken out, then use dryer be dried；Drying temperature is between 200 to 250 degrees Celsius, and the time is 5 to 7 minutes；E, the copper plate after drying is folded between three pieces of stainless steel plates and forms stacking, again using high-frequency welder by being warmed to 1100 to 1130 degrees Celsius, residence time is 30 to 40 seconds, so that red copper block mutually oozes with the two pieces of stainless steel plates connected forms heat exchanger plates base material after conjunction.
Description
【Technical field】
The present invention relates to a kind of manufacture method of heat exchanger plates.
【Background technology】
According to market survey and patent retrieval, heat exchanger is the core of the hot-water heating systems such as water heater, wall-hung boiler, boiler
There are various structures, such as steel pipe type, fin tube type, top tubular type, heat pipe-type, board-like diversified forms in part, existing heat exchanger.But
Plate type heat exchanger has the advantages that heat exchange efficiency height, compact conformation, cheap, is widely used in a variety of applications.But, current plate
There is sealing difficulty, the problems such as manufacturing larger difficulty of processing, long processing time, complex process, higher cost, technique in formula heat exchanger
It is that heat exchanger solves dew point corrosion with material, the key of water channel internal corrosion problem, etching problem can cause heat exchanger and its attached
Facility is failed, so as to have a strong impact on the normal work of heat exchanger, existing heat exchanger can not be met using aluminium heat-exchange plate mostly
High temperature resistant, high pressure resistant, erosion-resisting requirement；Also there are the heat exchanger plates that part uses copper product to be made, cost is high, heat conduction is fast,
Because the acidic materials in water quality hold readily react with copper, water quality is impacted.Stainless steel material is corrosion-resistant, plasticity is good, is easy to
Processing, cost is also relatively low, but heat conductivility is lower slightly；So, if the biography rate performance and stainless steel of the material of copper can be utilized
Expect that decay resistance is combined, be always that industry solves the skill that existing homogenous material makes the more difficult realization of heat exchanger plates many disadvantages
Art problem.
In order to capture drawbacks described above, we have developed a kind of manufacture method of heat exchanger plates.
【The content of the invention】
Purpose of the present invention technical problem to be solved is to provide for a kind of manufacture method of heat exchanger plates, material composition point
Cloth is uniform, and impurity content is few, and intensity is high, and air-tightness is good, and cost is low, and heat exchanger plates can obtain the excellent, even tissue of shaping, stretching
Intensity and share long lifespan, it is easy to accomplish and high yield rate, integrated artistic cost is relatively low, and large-scale production is carried out greatly.It is this
The heat exchanger plates of combining form, can not only play the strong advantage of hot biography rate of copper can fully apply stainless steel corrosion resistance again
Can, it is the technical method for having superior function with economy applied to the technique on heat exchanger plates.
To achieve these goals, the technical solution adopted by the present invention is：A kind of manufacture method of heat exchanger plates, this method bag
Include following steps：
A, three pieces of stainless steel materials of offer and one piece of copper plate；
B, stainless steel materials and copper plate are first passed through to pickling carry out oil removal treatment；
C, the copper plate after oil removing is put into potassium fluorozirconate solution and invades bubble, it is 2 to 3 minutes, potassium fluorozirconate to invade the bubble time
The temperature of solution is at 95 to 98 degrees Celsius；
D, the copper plate that will be invaded in potassium fluorozirconate solution after steeping are taken out, then use dryer be dried；Drying temperature exists
Between 200 to 250 degrees Celsius, the time is 5 to 7 minutes；
E, the copper plate after drying is folded between three pieces of stainless steel plates and forms stacking, then passed through using high-frequency welder
1100 to 1130 degrees Celsius are warmed to, the residence time is 30 to 40 seconds, so that red copper block mutually oozes with the two pieces of stainless steel plates connected
Heat exchanger plates base material is formed after conjunction.
In the implementation of the present invention, the trade mark of three blocks of stainless steels described in step E is SUS304 or SUS316, wherein
Inner plating above copper plate, the panel above inner plating, the bottom plate below the copper plate, the panel
With inner plating using 0.25 to 0.3mm thickness；The thickness of the copper plate is 0.08mm；The thickness of the bottom plate be 0.35 to
0.4mm thickness.
In the present invention implementation in, high-frequency welder described in step E act on heat exchange sheet material pressure for 8 to
10kgf/cm2。
In the implementation of the present invention, red copper block is adopted after mutually oozing conjunction with the two pieces of stainless steel plates connected in the step E
Sprayed and cooled down with nitrogen.
It is further comprising the steps of in the implementation of the present invention：F, by heat exchanger plates base material pass through cold punching die punching press
Shaping；
G, surface coated copper or nickel cored solder by multiple heat exchanger plates, place into vacuum brazing furnace and carry out soldering, you can be complete
Into.
In the implementation of the present invention, heat exchanger plates base material stamping procedure can be one or many punchings in the step F
Pressure makes the heat exchange sheet metal forming, and ultrasonic wave cleaning is carried out after shaping.
In the implementation of the present invention, vacuum brazing furnace in the step G vacuum in soldering is exhausted in 1.25Pa
To under pressure, the heat exchanger core body and copper that assemble or nickel cored solder is set equably to be warming up to 863 DEG C~878 using radiation mode
DEG C, and 30-33 minutes are incubated, make that the temperature at each position of heat exchanger core body assembled is uniform, soldering oven is continuously heating to 1130
~1135 DEG C, rear insulation 16 to 18 minutes, rear cooling, cool time was controlled within 5 minutes, and tapping temperature is less than 160 DEG C.
Present invention beneficial effect produced compared with background technology：
Present invention employs above-mentioned technical proposal, material composition is evenly distributed, and impurity content is few, and intensity is high, and air-tightness is good,
Cost is low, and heat exchanger plates can obtain shaping excellent, even tissue, tensile strength and share long lifespan, it is easy to accomplish and yield rate
Height, integrated artistic cost is relatively low, and large-scale production is carried out greatly.The heat exchanger plates of this combining form, can not only play copper
The strong advantage of hot biography rate can fully apply stainless steel decay resistance again, be technical and warp applied to the technique on heat exchanger plates
The method that Ji property has superior function.
【Embodiment】
Embodiments of the invention, described embodiment, wherein same or similar label from beginning to end are described below in detail
Represent same or similar element or the element with same or like function.Below by description embodiment be it is exemplary,
It is intended to explain the present invention, and is not considered as limiting the invention.
It is further described below by the embodiment to the present invention, makes technical scheme and its have
Beneficial effect is clearer, clear and definite.
The present invention also provides a kind of manufacture method of heat exchanger plates, it is characterised in that this method comprises the following steps：
A, three pieces of stainless steel materials of offer and one piece of copper plate；
B, stainless steel materials and copper plate are first passed through to pickling carry out oil removal treatment；
C, the copper plate after oil removing is put into potassium fluorozirconate solution and invades bubble, it is 2 to 3 minutes, potassium fluorozirconate to invade the bubble time
The temperature of solution is at 95 to 98 degrees Celsius；
D, the copper plate that will be invaded in potassium fluorozirconate solution after steeping are taken out, then use dryer be dried；Drying temperature exists
Between 200 to 250 degrees Celsius, the time is 5 to 7 minutes；
E, the copper plate after drying is folded between three pieces of stainless steel plates and forms stacking, then passed through using high-frequency welder
1100 to 1130 degrees Celsius are warmed to, the residence time is 30 to 40 seconds, so that red copper block mutually oozes with the two pieces of stainless steel plates connected
Heat exchanger plates base material is formed after conjunction.
In the present embodiment, the trade mark of three blocks of stainless steels described in step E is SUS304 or SUS316, wherein positioned at copper plate
The inner plating of top, the panel above inner plating, the bottom plate below the copper plate, the panel and inner plating are adopted
With 0.25 to 0.3mm thickness；The thickness of the copper plate is 0.08mm；The thickness of the bottom plate is 0.35 to 0.4mm thickness.
In the present embodiment, the pressure that high-frequency welder described in step E acts on heat exchange sheet material is 8 to 10kgf every square
Centimetre.
In the present embodiment, red copper block is sprayed after mutually oozing conjunction with the two pieces of stainless steel plates connected using nitrogen in the step E
Cooled down.
It is further comprising the steps of in the present embodiment：F, by heat exchanger plates base material pass through cold punching die punch forming；
G, surface coated copper or nickel cored solder by multiple heat exchanger plates, place into vacuum brazing furnace and carry out soldering, produce into
Product.
In the present embodiment, heat exchanger plates base material stamping procedure can make described change for one or many punching presses in the step F
Hot plate is molded, and ultrasonic wave cleaning is carried out after shaping.
In the present embodiment, vacuum brazing furnace in the step G vacuum in soldering under 1.25Pa absolute pressures, is adopted
The heat exchanger core body and copper that assemble or nickel cored solder is equably warming up to 863 DEG C~878 DEG C with radiation mode, and be incubated
30-33 minutes, make that the temperature at each position of heat exchanger core body assembled is uniform, soldering oven is continuously heating to 1130~1135 DEG C,
16 to 18 minutes are incubated afterwards, rear cooling, cool time was controlled within 5 minutes, tapping temperature is less than 160 DEG C.
By above-mentioned implementation, the heat exchanger plates material composition of making is evenly distributed, and impurity content is few, and intensity is high, airtight
Property it is good, cost is low, and heat exchanger plates can obtain shaping and excellent, even tissue, tensile strength and share long lifespan, it is easy to accomplish and into
Product rate is high, and integrated artistic cost is relatively low, and large-scale production is carried out greatly.The heat exchanger plates of this combining form, can not only be played
The advantage that the hot biography rate of copper is strong can fully apply stainless steel decay resistance again, be technical applied to the technique on heat exchanger plates
Has the method for superior function with economy.
In the description of specification, reference term " one embodiment ", " preferably ", " example ", " specific example " or " one
The description of a little examples " etc. means to combine specific features, structure, material or the feature that the embodiment or example are described, is contained in
In at least one embodiment or example of the present invention, not necessarily referred in this manual for the schematic representation of above-mentioned term
It is identical embodiment or example.Moreover, specific features, structure, material or the feature of description can in any one or
Combined in a suitable manner in multiple embodiments or example.
From the foregoing description of structures and principles it should be understood by those skilled in the art that, not office of the invention
It is limited to above-mentioned embodiment, this hair is all fallen within using the improvement and replacement of techniques well known on the basis of the present invention
Bright protection domain, should limit it by each claim.
Claims (7)
1. a kind of manufacture method of heat exchanger plates, it is characterised in that this method comprises the following steps：
A, three pieces of stainless steel materials of offer and one piece of copper plate；
B, stainless steel materials and copper plate are first passed through to pickling carry out oil removal treatment；
C, the copper plate after oil removing is put into potassium fluorozirconate solution and invades bubble, it is 2 to 3 minutes, potassium fluorozirconate solution to invade the bubble time
Temperature at 95 to 98 degrees Celsius；
D, the copper plate that will be invaded in potassium fluorozirconate solution after steeping are taken out, then use dryer be dried；Drying temperature 200 to
Between 250 degrees Celsius, the time is 5 to 7 minutes；
E, the copper plate after drying is folded between three pieces of stainless steel plates and forms stacking, then using high-frequency welder by heating
To 1100 to 1130 degrees Celsius, the residence time is 30 to 40 seconds, so that red copper block is mutually oozed after conjunction with the two pieces of stainless steel plates connected
Form heat exchanger plates base material.
2. the manufacture method of heat exchanger plates according to claim 1, it is characterised in that：Three blocks of stainless steels described in step E
The trade mark is SUS304 or SUS316, wherein the inner plating above copper plate, the panel above inner plating, positioned at described
Bottom plate below copper plate, the panel and inner plating are using 0.25 to 0.3mm thickness；The thickness of the copper plate is
0.08mm；The thickness of the bottom plate is 0.35 to 0.4mm thickness.
3. the manufacture method of heat exchanger plates according to claim 1, it is characterised in that：High-frequency welder described in step E is made
Pressure for the sheet material that exchanges heat is every square centimeter for 8 to 10kgf.
4. the manufacture method of the heat exchanger plates according to claim any one of 1-3, it is characterised in that：Red copper in the step E
Block mutually oozes to spray using nitrogen after conjunction with the two pieces of stainless steel plates connected to be cooled down.
5. the manufacture method of the heat exchanger plates according to claim any one of 1-3, it is characterised in that further comprising the steps of：
F, by heat exchanger plates base material pass through cold punching die punch forming；
G, surface coated copper or nickel cored solder by multiple heat exchanger plates, place into vacuum brazing furnace and carry out soldering, you can complete.
6. the manufacture method of heat exchanger plates according to claim 5, it is characterised in that：Heat exchanger plates base material is rushed in the step F
Pressure process can make the heat exchange sheet metal forming for one or many punching presses, and ultrasonic wave cleaning is carried out after shaping.
7. the manufacture method of heat exchanger plates according to claim 6, it is characterised in that：Vacuum brazing furnace in the step G
In soldering, vacuum is under 1.25Pa absolute pressures, heat exchanger core body and copper or the nickel soldering for making to assemble using radiation mode
Material is equably warming up to 863 DEG C~878 DEG C, and is incubated 30-33 minutes, makes the temperature at each position of heat exchanger core body assembled equal
Even, soldering oven is continuously heating to 1130~1135 DEG C, rear insulation 16 to 18 minutes, rear cooling, cool time control 5 minutes with
Interior, tapping temperature is less than 160 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103658.XA CN104827178B (en) | 2015-03-10 | 2015-03-10 | The manufacture method of heat exchanger plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510103658.XA CN104827178B (en) | 2015-03-10 | 2015-03-10 | The manufacture method of heat exchanger plates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104827178A CN104827178A (en) | 2015-08-12 |
| CN104827178B true CN104827178B (en) | 2017-08-04 |
Family
ID=53805572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510103658.XA Active CN104827178B (en) | 2015-03-10 | 2015-03-10 | The manufacture method of heat exchanger plates |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104827178B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2718690A (en) * | 1950-05-20 | 1955-09-27 | John B Ulam | Method of producing composite metals |
| US6109504A (en) * | 1998-07-10 | 2000-08-29 | Clad Metals Llc | Copper core cooking griddle and method of making same |
| CN1375374A (en) * | 2002-04-18 | 2002-10-23 | 南京工业大学 | Manufacture of fine-type stainless steel plate heat exchanger |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5938591A (en) * | 1982-08-25 | 1984-03-02 | Hitachi Ltd | Heat exchanger of laminate type |
| JPS63172639A (en) * | 1987-01-12 | 1988-07-16 | 住友金属工業株式会社 | Double-sided clad steel band having excellent thermal conduction |
| FI114691B (en) * | 2000-02-23 | 2004-12-15 | Outokumpu Oy | A method for forming a connection between copper and stainless steel |
| SE527509C2 (en) * | 2003-10-17 | 2006-03-28 | Alfa Laval Corp Ab | Soldered plate heat exchanger with plates of substantially stainless steel and process for manufacturing such plate heat exchanger |
| CN101691961B (en) * | 2009-09-30 | 2011-05-25 | 重庆大学 | Processing molding method for stainless steel plate type heat exchanger |
| KR20140049111A (en) * | 2012-10-12 | 2014-04-25 | 주식회사 신우오에스 | Fusion method of plate type heat exchanger |
-
2015
- 2015-03-10 CN CN201510103658.XA patent/CN104827178B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2718690A (en) * | 1950-05-20 | 1955-09-27 | John B Ulam | Method of producing composite metals |
| US6109504A (en) * | 1998-07-10 | 2000-08-29 | Clad Metals Llc | Copper core cooking griddle and method of making same |
| CN1375374A (en) * | 2002-04-18 | 2002-10-23 | 南京工业大学 | Manufacture of fine-type stainless steel plate heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104827178A (en) | 2015-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103861892B (en) | A kind of compound shaping method of wide magnesium alloy thin plate | |
| CN101149237A (en) | Fin type non-corrosive steel alloy foil tube heat-exchanger and its manufacture method | |
| CN104708293A (en) | Manufacturing method for heat exchanger | |
| CN105195551A (en) | Profiled bar fine wire drawing technology | |
| CN104827178B (en) | The manufacture method of heat exchanger plates | |
| CN106890861A (en) | The method and apparatus that micro-channel heat exchanger is manufactured using cold-extrusion technology | |
| CN105018699A (en) | Heat treatment technology for stainless steel | |
| CN106734715A (en) | 904L+Q345R pressure container of composite board end socket thermoforming process | |
| US20080060722A1 (en) | Method for the production of tubes for heat exchangers from precipitation-hardened alloys by high-frequency induction welding | |
| CN201579300U (en) | Straight seam high frequency welding pipe molding pipeline capable of squeezing plate sides to increase thickness | |
| WO2005012817A3 (en) | Heat exchanger and process for devolatilizing polymers using same | |
| CN104526291B (en) | A kind of manufacturing process of evaporator | |
| CN203378928U (en) | Truly-stainless compound-base iron pan | |
| CN203281649U (en) | Titanium plate correcting device | |
| CN113560820A (en) | Steel spade production process | |
| CN108240720A (en) | A kind of metallic membrane heat exchanger | |
| CN210638569U (en) | Heat exchange core | |
| CN109277408B (en) | Silicon steel sheet forming equipment and manufacturing process | |
| CN207610581U (en) | A kind of heat recovering heat exchanger | |
| CN207247945U (en) | A kind of gilled radiator | |
| CN206222752U (en) | Vaporizor for refrigerator | |
| CN104152791A (en) | High-strength hard seamless steel tube and manufacturing technology thereof | |
| CN110497495A (en) | Bamboo frame part stamping die assembly and process for stamping | |
| CN106755915A (en) | A kind of GCr15 steels cold roll quenching technical | |
| CN101209521B (en) | Tube changing technique of heat interchange steel tube for evaporator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220421 Address after: 528000 one of building 3, plot 27-7, Fu'an Industrial Zone, Leliu street, Shunde District, Foshan City, Guangdong Province Patentee after: FOSHAN SHENZHOU OUCHENG THERMAL ENERGY TECHNOLOGY CO.,LTD. Address before: 528200 No. 1, 2nd Lane, 3rd Street, Lizhong Road, Lecong Town, Shunde District, Foshan City, Guangdong Province Patentee before: Hu Guilin |