CN108581370B - Manufacturing method of liquid storage silencer - Google Patents
Manufacturing method of liquid storage silencer Download PDFInfo
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- CN108581370B CN108581370B CN201810263753.XA CN201810263753A CN108581370B CN 108581370 B CN108581370 B CN 108581370B CN 201810263753 A CN201810263753 A CN 201810263753A CN 108581370 B CN108581370 B CN 108581370B
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- copper sleeve
- cylinder body
- copper
- pressure head
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- Expired - Fee Related
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 238000003860 storage Methods 0.000 title claims abstract description 21
- 230000003584 silencer Effects 0.000 title abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 46
- 229910052802 copper Inorganic materials 0.000 claims abstract description 46
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000003466 welding Methods 0.000 claims abstract description 37
- 238000000034 method Methods 0.000 claims description 38
- 238000003825 pressing Methods 0.000 claims description 25
- 241000227287 Elliottia pyroliflora Species 0.000 claims description 19
- 238000009987 spinning Methods 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000004080 punching Methods 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- 239000000463 material Substances 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Images
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a manufacturing method of a liquid storage silencer, which relates to the field of air conditioner accessories and comprises the steps of barrel manufacturing, copper sleeve placing, prepressing, secondary press-fitting welding and the like.
Description
Technical Field
The invention relates to the field of air conditioner accessories, in particular to a manufacturing method of a liquid storage silencer.
Background
The liquid storage device or the silencer (liquid storage silencer) is a basic component in an air-conditioning refrigeration system, and can be used as the liquid storage device in the system to store redundant refrigerant in the system; can also be used as a silencer to ensure that the airflow passes through and the noise can be effectively reduced.
A commonly used liquid storage silencer comprises a section of cylinder with a larger diameter, and an air inlet pipe and an air outlet pipe which are welded with the two ends of the cylinder and have smaller diameters. Most of the existing liquid storage silencers used in the market are made of copper and steel, a barrel is made of steel, an air inlet pipe and an air outlet pipe are made of copper, the air pipe and the barrel are welded by brass, but the steel barrel is easy to rust, so that a paint film needs to be sprayed on the outer surface of a product, and the coating process has great influence on the environment.
The Chinese patent application No. 201310468951.7 discloses an integrally formed stainless steel material for a cylinder, which is directly processed on the cylinder through a spinning process, and is provided with air inlet and air outlet ports, a copper sleeve is additionally arranged inside the port, and the copper sleeve and the cylinder are welded together through a furnace welding process.
In the process, the main equipment of the tunnel furnace system of the reducing atmosphere protection tunnel furnace welding process consists of a liquid ammonia gasification furnace, an ammonia decomposition furnace and a mesh belt type tunnel furnace. The reducing atmosphere is that liquid ammonia is gasified into ammonia gas through a gasification furnace, then the ammonia gas is decomposed into hydrogen and nitrogen gas at the high temperature of 850 ℃ through a nickel catalyst in an ammonia decomposition furnace, and the hydrogen and nitrogen gas are filled into a high-temperature hearth of a tunnel furnace to protect a liquid storage device assembly at the high temperature from being oxidized in the high-temperature welding process. Ammonia and hydrogen are dangerous gases, and have extremely high potential safety hazards. In addition, the high-temperature tunnel furnace uses a heat source, generally a resistance wire or a silicon carbide rod generates heat electrically to heat the high-temperature resistant metal furnace hearth to about 1130 ℃ higher than the melting point (1083 ℃) of red copper, the high-temperature resistant metal furnace hearth and the high-temperature resistant mesh belt which run continuously at the high temperature of 1130 ℃ are made of high-temperature resistant stainless steel which is practical and expensive, and the continuous practical service life is generally less than 6 months. In the production waiting time of the non-product production, the influence of thermal expansion and cold contraction on the service life of a hearth and a mesh belt is considered, the whole tunnel furnace system still needs to be in idle operation in the environment with high temperature of 700 ℃, and a large amount of energy is wasted. The whole tunnel furnace system occupies an area of about 50 square meters, and the capacity is only less than 200 pieces/hour. The complex and expensive running expensive welding process of the reducing tunnel furnace results in high manufacturing cost of the traditional three-section double-pipe accumulator. In addition, the process has long manufacturing period and influences the production efficiency.
Disclosure of Invention
The invention aims to solve the problem of providing a method for manufacturing a liquid storage silencer, which has the advantages of simple process, low energy consumption and low manufacturing cost.
In order to achieve the purpose, the invention adopts the technical scheme that: the manufacturing method of the liquid storage silencer comprises the following specific steps:
a method for manufacturing a liquid storage muffler comprises the following steps:
(1) spinning and necking two ends of the metal pipe to form a cylinder by adopting a spinning and necking process;
(2) adopting an extrusion forming mode, stamping to form a copper sleeve, wherein the outer wall of the copper sleeve is provided with a straight grain knurling surface;
(3) a press-fitting process is adopted, and the copper bush is placed into the port of the cylinder body;
(4) pre-expanding the copper sleeve by using a multi-section type pressure head to enable the copper sleeve and the cylinder body to form transition to interference fit, and electrifying and preheating the copper sleeve after pre-expanding;
(5) and (3) performing secondary expansion on the copper sleeve by using the multi-section pressing head, and continuing electrifying until the copper sleeve body is melted to be tightly connected with the cylinder body, which is a resistance welding process.
Preferably, in the step (3), the copper sleeve is in clearance fit with the inner wall of the port of the cylinder body.
Preferably, the material of the cylinder is stainless steel.
Preferably, the multistage formula pressure head includes pressure head body, pre-compaction section and welding and presses the three part of section, and the diameter of pressure head body, pre-compaction section and welding and pressing the section increases in proper order, and adopts the circular arc transition between two adjacent parts, and the diameter of pressure head body is less than the port internal diameter of barrel.
Preferably, the diameter size difference of the pre-pressing section and the welding pressing section is 0.3 mm.
A liquid storage silencer is manufactured by the method.
Preferably, the straight-line knurled surface on the outer wall of the copper sleeve is in a sine wave tooth shape.
The invention has the beneficial effects that: the spinning necking resistance welding process is adopted to replace the traditional tunnel furnace welding process, so that the energy consumption can be reduced, the environmental pollution is low, the cost is saved, the process is simple, the operation difficulty is low, and the production efficiency of the liquid storage silencer is obviously improved. The method comprises the following specific steps:
the invention relates to a spinning necking forming process, which is an advanced forming process method for continuously and locally plastically accumulating and forming a metal pipe into a hollow rotating part, and is a long-standing traditional technology.A spinning necking is carried out, the metal pipe is fed into an automatic numerical control spinning machine, the part to be formed is exposed outside, after a main shaft drives the metal pipe to rotate at a high speed, a numerical control system automatically controls a spinning wheel to reciprocate according to a specified shape track, when the direction is changed each time, a certain amount of transverse feeding is carried out, the periphery of the metal pipe is gradually reduced in diameter, and a part with a throat diameter shape is obtained, such as a barrel in the invention.A barrel in a Z L201310468951.7 patent is required to be subjected to spinning barrel, red copper welding wires are placed, a copper sleeve and the barrel are assembled, and the assembly is fed into a tunnel furnace for high-temperature welding.
The resistance welding is to use a large current to generate high-temperature melting at a contact point and weld the contact point on a port of the cylinder body. The process saves solder, reduces material cost, adopts sine wave teeth to melt uniformly, has more stable welding quality, has no influence on the environment, and has high production speed and low energy consumption. Therefore, the welding method is one of the most important welding methods for metal welding at present. For example, the cylinder body and the copper sleeve are welded in the invention. The traditional structure needs to be spun, red copper welding wires are placed, a copper sleeve and a barrel are assembled, and the assembly enters a tunnel furnace for high-temperature welding. The invention adopts resistance welding to weld and form the copper sleeve and the cylinder body only by locally melting the components in one step, and has one working procedure, compared with the traditional process, the production process is simplified, the process complexity is reduced, the power consumption is reduced, and the manufacturing cost is reduced.
Drawings
FIG. 1 is a schematic view of the installation of the copper bush and the cylinder in the present invention.
Fig. 2 is a schematic structural view of the copper bush of the present invention.
Fig. 3 is a front view of the copper sheathing of the present invention.
Fig. 4 is a front view of the multi-stage ram of the present invention.
Wherein: 1-cylinder, 2-copper sleeve, 3-multi-section pressure head, 31-pressure head body, 32-prepressing section and 33-welding pressing section.
Detailed Description
For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the present invention.
Example 1
As shown in fig. 1 to 3, a method for manufacturing a liquid storage muffler includes the steps of:
(1) spinning and necking two ends of the metal pipe to form a cylinder body 1 by adopting a spinning and necking process;
(2) the copper sleeve 2 is manufactured by adopting an extrusion forming mode and punching, the outer wall of the copper sleeve is provided with a straight-line knurled surface, and the straight-line knurled surface on the outer wall of the copper sleeve is in a sine wave tooth shape or other similar shapes;
(3) a press-fitting process is adopted, and the copper bush 2 is placed into the port of the cylinder body 1;
(4) pre-expanding the copper sleeve 2 by using the multi-section type pressure head 3 to form transition to interference fit with the cylinder body 1, and electrifying and preheating the copper sleeve after pre-expanding;
(5) and (3) utilizing the multi-section type pressure head 3 to perform secondary expansion on the copper sleeve 2, and continuing electrifying until the body of the copper sleeve 2 is melted to be tightly connected with the cylinder body 1.
In this embodiment, in the step (3), the copper bush 2 is in clearance fit with the inner wall of the port of the cylinder 1.
In the present embodiment, the material of the cylinder 1 is specifically stainless steel.
In this embodiment, as shown in fig. 4, the multi-section ram 3 includes three portions, namely, a ram body 31, a pre-pressing section 32 and a welding pressing section 33, the diameters of the ram body 31, the pre-pressing section 32 and the welding pressing section 33 are sequentially increased, an arc transition is adopted between two adjacent portions, and the diameter of the ram body 31 is smaller than the inner diameter of the port of the cylinder 1. The pressure head body 31 is used for positioning the copper bush 2 in the port of the cylinder body 1, then pre-pressing the copper bush 2 by using the pre-pressing section 32, finally performing secondary expansion on the copper bush by using the welding pressing section 33, and welding by adopting resistance welding, wherein the sine wave tooth structure on the outer wall of the copper bush 2 is melted and is tightly connected with the inner wall of the port of the cylinder body 1.
The invention also discloses a liquid storage silencer which is prepared by the method in the embodiment 1.
Example 2
A method for manufacturing a liquid storage muffler comprises the following steps:
(1) spinning and necking two ends of the metal pipe to form a cylinder body 1 by adopting a spinning and necking process;
(2) the copper sleeve 2 is manufactured by adopting an extrusion forming mode and punching, the outer wall of the copper sleeve is provided with a straight-line knurled surface, and the straight-line knurled surface on the outer wall of the copper sleeve is in a sine wave tooth shape or other similar shapes;
(3) a press-fitting process is adopted, and the copper bush 2 is placed into the port of the cylinder body 1;
(4) pre-expanding the copper sleeve 2 by using the multi-section type pressure head 3 to form transition to interference fit with the cylinder body 1, and electrifying and preheating the copper sleeve after pre-expanding;
(5) and (3) utilizing the multi-section type pressure head 3 to perform secondary expansion on the copper sleeve 2, and continuing electrifying until the body of the copper sleeve 2 is melted to be tightly connected with the cylinder body 1.
In this embodiment, in the step (3), the copper bush 2 is in clearance fit with the inner wall of the port of the cylinder 1.
In the present embodiment, the material of the cylinder 1 is specifically stainless steel.
In this embodiment, as shown in fig. 4, the multi-section ram 3 includes three portions, namely, a ram body 31, a pre-pressing section 32 and a welding pressing section 33, the diameters of the ram body 31, the pre-pressing section 32 and the welding pressing section 33 are sequentially increased, an arc transition is adopted between two adjacent portions, and the diameter of the ram body 31 is smaller than the inner diameter of the port of the cylinder 1. The pressure head body 31 is used for positioning the copper bush 2 in the port of the cylinder body 1, then pre-pressing the copper bush 2 by using the pre-pressing section 32, finally performing secondary expansion on the copper bush by using the welding pressing section 33, and welding by adopting resistance welding, wherein the sine wave tooth structure on the outer wall of the copper bush 2 is melted and is tightly connected with the inner wall of the port of the cylinder body 1.
In the present embodiment, the diameter of the pre-pressing section 32 and the diameter of the welding pressing section 33 are different by 0.3 mm.
The invention also discloses a liquid storage silencer which is prepared by the method in the embodiment 2.
It is to be understood that the invention is not limited to the specific embodiments described above, but is intended to cover various insubstantial modifications of the inventive process concepts and solutions, or its application to other applications without modification.
Claims (2)
1. A method for manufacturing a liquid storage muffler is characterized by comprising the following steps:
(1) spinning and necking two ends of the metal pipe to form a cylinder body (1) by adopting a spinning and necking process;
(2) the copper sleeve (2) is manufactured by adopting an extrusion forming mode and punching, the outer wall of the copper sleeve is provided with a straight-line knurled surface, and the straight-line knurled surface on the outer wall of the copper sleeve is in a sine wave tooth shape;
(3) a press-fitting process is adopted, and the copper sleeve (2) is placed into the port of the cylinder body (1);
(4) pre-expanding the copper sleeve (2) by using a multi-section type pressure head (3) to form transition to interference fit with the cylinder body (1), and electrifying and preheating the copper sleeve after pre-expanding;
(5) the copper sleeve (2) is expanded for the second time by using the multi-section type pressure head (3), and the energization is continued until the body of the copper sleeve (2) is melted to be tightly connected with the cylinder body (1);
in the step (3), the copper sleeve (2) is in clearance fit with the inner wall of the port of the cylinder body (1), and the cylinder body (1) is made of stainless steel;
the multi-section pressure head (3) comprises a pressure head body (31), a prepressing section (32) and a welding pressing section (33), the diameters of the pressure head body (31), the prepressing section (32) and the welding pressing section (33) are sequentially increased, circular arc transition is adopted between every two adjacent parts, the diameter of the pressure head body (31) is smaller than the inner diameter of a port of the cylinder body (1), the diameter size of the prepressing section (32) and the diameter size of the welding pressing section (33) differ by 0.3mm, the pressure head body (31) is used for positioning the copper bush (2) in the port of the cylinder body (1), then the prepressing section (32) is utilized to perform prepressing on the copper bush (2), finally the welding pressing section (33) is utilized to perform secondary expansion on the copper bush, resistance welding is adopted, and a sine wave tooth structure on the outer wall of the copper bush (2) is melted and is tightly connected with the inner wall of the port of.
2. A liquid storage muffler, characterized by being produced by the production method according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810263753.XA CN108581370B (en) | 2018-03-28 | 2018-03-28 | Manufacturing method of liquid storage silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810263753.XA CN108581370B (en) | 2018-03-28 | 2018-03-28 | Manufacturing method of liquid storage silencer |
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| Publication Number | Publication Date |
|---|---|
| CN108581370A CN108581370A (en) | 2018-09-28 |
| CN108581370B true CN108581370B (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810263753.XA Expired - Fee Related CN108581370B (en) | 2018-03-28 | 2018-03-28 | Manufacturing method of liquid storage silencer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000079986A (en) * | 1998-07-02 | 2000-03-21 | Morimatsu Sogo Kenkyusho:Kk | Tank and manufacture thereof |
| CN103433636A (en) * | 2013-08-22 | 2013-12-11 | 唐勇 | Method for manufacturing thermometal metallurgy composite tube in pressure welding composite mode |
| CN105537883A (en) * | 2016-02-05 | 2016-05-04 | 广州鸿民实业有限公司 | Manufacturing technology for muffler |
| CN205481652U (en) * | 2016-01-15 | 2016-08-17 | 颜兆赞 | Use muffler in air conditioning equipment |
| CN107345603A (en) * | 2016-05-06 | 2017-11-14 | 珠海华宇金属有限公司 | A kind of nozzle structure and its liquid reservoir |
| CN206973954U (en) * | 2017-05-16 | 2018-02-06 | 佛山晓世科技服务有限公司 | Tubular part socket join structure and the air conditioner comprising the structure |
-
2018
- 2018-03-28 CN CN201810263753.XA patent/CN108581370B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000079986A (en) * | 1998-07-02 | 2000-03-21 | Morimatsu Sogo Kenkyusho:Kk | Tank and manufacture thereof |
| CN103433636A (en) * | 2013-08-22 | 2013-12-11 | 唐勇 | Method for manufacturing thermometal metallurgy composite tube in pressure welding composite mode |
| CN205481652U (en) * | 2016-01-15 | 2016-08-17 | 颜兆赞 | Use muffler in air conditioning equipment |
| CN105537883A (en) * | 2016-02-05 | 2016-05-04 | 广州鸿民实业有限公司 | Manufacturing technology for muffler |
| CN107345603A (en) * | 2016-05-06 | 2017-11-14 | 珠海华宇金属有限公司 | A kind of nozzle structure and its liquid reservoir |
| CN206973954U (en) * | 2017-05-16 | 2018-02-06 | 佛山晓世科技服务有限公司 | Tubular part socket join structure and the air conditioner comprising the structure |
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| Publication number | Publication date |
|---|---|
| CN108581370A (en) | 2018-09-28 |
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