CN104562004B - A kind of all kinds of temperature controller aluminium alloy temperature-sensing pipes and preparation method thereof - Google Patents
A kind of all kinds of temperature controller aluminium alloy temperature-sensing pipes and preparation method thereof Download PDFInfo
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- CN104562004B CN104562004B CN201510042182.3A CN201510042182A CN104562004B CN 104562004 B CN104562004 B CN 104562004B CN 201510042182 A CN201510042182 A CN 201510042182A CN 104562004 B CN104562004 B CN 104562004B
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 95
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 71
- 238000007747 plating Methods 0.000 claims abstract description 54
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 39
- 229910052802 copper Inorganic materials 0.000 claims abstract description 39
- 239000010949 copper Substances 0.000 claims abstract description 39
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 20
- 239000011701 zinc Substances 0.000 claims abstract description 20
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 14
- 238000005246 galvanizing Methods 0.000 claims description 12
- 238000005554 pickling Methods 0.000 claims description 11
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 10
- 239000003792 electrolyte Substances 0.000 claims description 10
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 10
- 230000009849 deactivation Effects 0.000 claims description 9
- 238000002161 passivation Methods 0.000 claims description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- 235000021110 pickles Nutrition 0.000 claims description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 5
- 238000004090 dissolution Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000005237 degreasing agent Methods 0.000 claims description 4
- 239000013527 degreasing agent Substances 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 239000010953 base metal Substances 0.000 claims description 3
- 239000012459 cleaning agent Substances 0.000 claims description 3
- 238000005238 degreasing Methods 0.000 claims description 2
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 12
- 229910001369 Brass Inorganic materials 0.000 abstract description 4
- 239000010951 brass Substances 0.000 abstract description 4
- 230000035945 sensitivity Effects 0.000 abstract description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 230000004913 activation Effects 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 235000011149 sulphuric acid Nutrition 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 102000004160 Phosphoric Monoester Hydrolases Human genes 0.000 description 1
- 108090000608 Phosphoric Monoester Hydrolases Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K5/00—Measuring temperature based on the expansion or contraction of a material
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
nullThe present invention relates to a kind of all kinds of temperature controller aluminium alloy temperature-sensing pipe and preparation method thereof，The present invention replaces copper with aluminium alloy，First aluminium-alloy pipe oil removing，Clean surface again，It is then plated with zinc，Described zinc coat is 20um,Plated with copper again，Described copper plate is 20um,Finally clean in second time，Plate stannum，Described tin coating is 15um,Zinc-plated purpose is for copper facing，Copper-plated purpose is in order to tin plating，Tin plating purpose is to weld with base，Prevent gas leakage，Described aluminium alloy body one end mouth of pipe is provided with a rolling mouth，A sealing gasket it is fixed with in described rolling mouth，Shape for hat gum cover also it is arranged with on the mouth of pipe of described aluminium alloy body one end，Better tightness，The when of welding be with tin welding compared with existing capillary brass pipe，Solve the problem that cost is high，And conductivity is faster，Sensitivity is higher，The performance making temperature-sensing pipe is more preferable，Improve work efficiency and the quality of electrical equipment，More it is worthy of popularization.
Description
Technical field
The present invention relates to temperature controller field of mechanical technique, particularly relate to a kind of all kinds of temperature controller aluminium alloy temperature-sensitive
Pipe and preparation method thereof.
Background technology
Temperature controller is to promote the through and off of contact with pressure action principle, and its structure is by corrugated tube, temperature-sensing pipe, partially
Heart wheel, microswitch etc. form an induction system sealed and a system transferring signal power, and temperature-sensing pipe is at central
Acting on to pass of temperature sensor, can operate with refrigerator, refrigerator, air-conditioning, water dispenser and the series such as air conditioning for automobiles, dried-air drier
In the fields such as pressure type temp. controller and vapour-pressure type relay.
At present, when some workplace to certain temperature, need to open the safety-valve and carry out pressure release.As heat concentrated by solar energy
In water system, it need to automatically open up relief valve when concentrating the water temperature in water tank more than 99 DEG C and carry out pressure release, otherwise can cause safety
Accident.Opening of its relief valve mainly utilizes temperature-sensing pipe to monitor the temperature of workplace in real time and arrives design temperature
Time back down relief valve in time.Existing temperature-sensing pipe includes capillary tube, base, piston, push rod, fill out in advance in microcapillary tube body
Entering temperature sensing medium, its operation principle is: utilizes the characteristic of temperature sensing medium expanded by heating in its pipe, is heated at temperature sensing medium swollen
Pushing up on piston sealing after swollen, seal and push up on the push rod that piston driving is positioned above, TSV opened by push rod, with reality
Existing security purpose, in current temperature-sensing pipe for fill the capillary tube of temperature sensing medium be red copper be the capillary copper that raw material is made
Pipe, the temperature-sensing pipe not only manufacturing cost that this kind of blood capillary is made is higher, and conductivity efficiency is low, the technology that sensitivity is the highest
Problem, affects the performance of temperature-sensing pipe, thus affects work efficiency and the quality of electrical equipment.
Summary of the invention
In order to solve the technical problem of above-mentioned existence, the invention provides a kind of all kinds of temperature controller aluminium alloy temperature-sensing pipe
And preparation method thereof, concrete technical scheme is:
The preparation method of a kind of all kinds of temperature controller aluminium alloy temperature-sensing pipe, it is characterised in that described prepare temperature-sensing pipe bag
Include following steps to make:
Step one: by the step of capillary aluminium-alloy pipe surface degreasing；
Step 2: the capillary aluminium-alloy pipe after above-mentioned oil removing is carried out the step washed；
Step 3: the step that capillary aluminium-alloy pipe after having washed is the most zinc-plated, the zinc-plated time is 2s-
6s；
Step 4: by above-mentioned zinc-plated after the most copper-plated step of capillary aluminium-alloy pipe, the copper-plated time is 8s-
12s；
Step 5: the step that the capillary aluminium-alloy pipe after above-mentioned copper facing is washed again；
Step 6: by above-mentioned steps five, the step that capillary aluminium-alloy pipe after washing is the most tin plating, time tin plating
Between for 8s-12s；
Step 7: capillary aluminium-alloy pipe pipe one end is arranged with a shape for hat gum cover.
A kind of based on the aluminium alloy temperature-sensing pipe in all kinds of temperature controllers obtained by above-mentioned preparation method, including aluminium alloy
Body, shape for hat gum cover, described aluminium alloy body has crossed one layer of zinc, has crossed one layer of copper, cross on layers of copper on zinc layers
One layer of stannum, described aluminium alloy body one end mouth of pipe is arranged with a shape for hat gum cover, and the left end of shape for hat gum cover is uncovered, the aluminium alloy mouth of pipe
Uncovered from shape for hat gum cover is inserted into inside shape for hat gum cover, and the internal perisporium of shape for hat gum cover tightly connects with the outer tube wall of aluminium-alloy pipe
Touching, the uncovered of described shape for hat gum cover is a bell, and described bell is the most internally to be shunk by the outside of shape for hat gum cover
Being formed, described aluminium alloy tubular body is hollow pipe, and the described aluminium-alloy pipe other end mouth of pipe is used for and temperature-sensing pipe base 8
Welding, and tin welding during welding
The oil removing of described step one is the greasy dirt that chemical deoiling and degreasing agent or water base metal cleaning agent remove surface of the work.
In described step 3, the time of electrogalvanizing is 4s.
Described step 3 is zinc-plated to be comprised the steps:
1) pickling: the capillary aluminium-alloy pipe after described washing is carried out pickling in pickle；The group of described pickle
Becoming: H2SO4 12-18%, thiourea 0.1-0.12%, Yu Weishui, unit is mass percent；
2) washing: the capillary aluminium-alloy pipe after pickling is carried out the step washed；
3) electrogalvanizing: by 2) in the electroplate liquid that invades in galvanizing bath of capillary aluminium-alloy pipe after washing zinc-plated, described
Electroplate liquid be the clear water chemicals measured being added in galvanizing bath by proportioning content stirs, mixed dissolution is made,
The pH value of electroplate liquid is 3-4.5, and temperature range is 15-60 ° of C.
4) capillary aluminium-alloy pipe removes galvanizing bath, again cleans with water；
5) 4 will be played through step) capillary aluminium-alloy pipe invade the step being passivated in the passivating solution in deactivation slot, described
In the every L of passivating solution in deactivation slot, the proportioning content of chemicals is: chromic anhydride 0.4-1.1g, brium carbonate 0.4-0.8g, phosphoric acid
0.9-1.2mL。
6) again being washed by the capillary aluminium-alloy pipe after passivation, the step dried up after washing is played.
5, the method for preparation temperature controller temperature-sensing pipe according to claim 1, it is characterised in that described step 4
The time of middle electro-coppering is 10s.
Described electro-coppering comprises the steps: 1) dedusting oil removing, 2) sound wave cleaning, 3) acid washing phosphorization, 4) activation, 5) plating
Copper, 6) washing drying.
Described step 6 tin plating time is 10s.
Described tin plating comprise the steps: 1) utilize tin plating electrolyte to plate capillary aluminium-alloy pipe to be plated in tin plating cylinder
Stannum, obtains the second work package, 2) tin plating electrolyte is utilized to carry out secondary the second work package in tin plating cylinder tin plating.
Described zinc coat is 5-20um, and copper plate is 5-20um, and tin coating is 5-15um.
The present invention replaces copper with aluminium alloy, first aluminium-alloy pipe oil removing, then cleans surface, be then plated with zinc, described plating
Zinc layers is 5-20um, and in plated with copper, described copper plate is 5-20um, finally cleans in second time, plates stannum, and tin coating is 5-
15um, zinc-plated purpose is for copper facing, and copper-plated purpose is in order to tin plating, and tin plating purpose is to weld with base, anti-
Leak-stopping gas, better tightness, the when of welding be with tin welding compared with existing capillary brass pipe, solve high the asking of cost
Topic, and conductivity is faster, and sensitivity is higher, the time of 3-4 second faster than copper so that the performance of temperature-sensing pipe is more preferable, improves electricity
The work efficiency of device and quality, be more worthy of popularization.
Accompanying drawing explanation
Fig. 1 is the structural representation of aluminium-alloy pipe in the present invention.
Detailed description of the invention
Below in conjunction with embodiment, the detailed description of the invention of the present invention is described in further detail.Following example are used for
The present invention is described, but is not limited to the scope of the present invention.
Embodiment 1: with aluminium-alloy pipe as raw material, then removes the oil on capillary aluminium-alloy pipe surface with chemical deoiling and degreasing agent
Dirt, washes the most again, and afterwards at H2SO4 12%, thiourea 0.1%, Yu Weishui, unit is in the pickle of mass percent
Carry out pickling, wash the most again, the most again capillary aluminium-alloy pipe is invaded the zinc-plated 2s of electroplate liquid in galvanizing bath, described
Electroplate liquid be the clear water chemicals measured being added in galvanizing bath by proportioning content stirs, mixed dissolution is made,
The pH value of electroplate liquid is 3, and temperature range is 15C, the most again cleans, and then invades in the passivating solution in deactivation slot and is passivated
Step, in the every L of passivating solution in described deactivation slot, the proportioning content of chemicals is: chromic anhydride 0.4g, brium carbonate 0.4g, phosphoric acid
0.9mL, afterwards by the capillary aluminium-alloy pipe washing after passivation, then will dry up it, and described zinc coat is 5um, will the most again
Plate the capillary aluminium-alloy pipe copper facing 8s again after zinc, particularly as follows: dedusting oil removing sound wave cleans acid washing phosphorization
Activation copper facing washing is dried, and copper plate is 5um, the most again by the tin plating 8s of capillary aluminium-alloy pipe after copper facing, and tool
Body is tin plating for utilizing tin plating electrolyte to carry out work package to be plated in tin plating cylinder, obtains the second work package, then will in tin plating cylinder
It is tin plating that second work package utilizes tin plating electrolyte to carry out secondary, tin coating be 5um finally with stannum by above-mentioned tin plating after capillary aluminum close
Gold pipe is welded together with base, and capillary aluminium-alloy pipe pipe one end is arranged with a shape for hat gum cover, makes temperature controller
Temperature-sensing pipe.
Embodiment 2: with aluminium-alloy pipe as raw material, then removes capillary aluminium-alloy pipe surface with water base metal cleaning agent
Greasy dirt, washes the most again, and afterwards at H2SO4 18%, thiourea 0.12%, Yu Weishui, unit is the pickling of mass percent
Liquid carries out pickling, washes the most again, the most again capillary aluminium-alloy pipe is invaded the zinc-plated 6s of electroplate liquid in galvanizing bath, institute
The electroplate liquid stated be the clear water chemicals measured being added in galvanizing bath by proportioning content stirs, mixed dissolution system
Becoming, the pH value of electroplate liquid is 4.5, and temperature range is 60 ° of C, the most again cleans, and then invades in the passivating solution in deactivation slot
The step of row passivation, in the every L of passivating solution in described deactivation slot, the proportioning content of chemicals is: chromic anhydride 1.1g, brium carbonate
0.8g, phosphatase 11 .2mL, afterwards by the capillary aluminium-alloy pipe washing after passivation, then will dry up it, and described zinc coat is 20um,
Next the capillary aluminium-alloy pipe copper facing 12s again after zinc will have been plated again, particularly as follows: dedusting oil removing sound wave cleans acid
Washing phosphatization activation copper facing washing to dry, described copper plate is 20um, the most again by the capillary aluminum after copper facing
The tin plating 12s of compo pipe, specially utilizes tin plating electrolyte to carry out work package to be plated in tin plating cylinder tin plating, obtains the second work package,
Then second work package utilizing in tin plating cylinder tin plating electrolyte carry out secondary tin plating, described tin coating is 15um, finally will with stannum
Above-mentioned tin plating after capillary aluminium-alloy pipe be welded together with base, capillary aluminium-alloy pipe pipe one end is arranged with a shape for hat
Gum cover, makes the temperature-sensing pipe of temperature controller.
Embodiment 3: with aluminium-alloy pipe as raw material, then removes the oil on capillary aluminium-alloy pipe surface with chemical deoiling and degreasing agent
Dirt, washes the most again, and afterwards at H2SO4 15%, thiourea 0.6%, Yu Weishui, unit is in the pickle of mass percent
Carry out pickling, wash the most again, the most again capillary aluminium-alloy pipe is invaded the zinc-plated 4s of electroplate liquid in galvanizing bath, described
Electroplate liquid be the clear water chemicals measured being added in galvanizing bath by proportioning content stirs, mixed dissolution is made,
The pH value of electroplate liquid is 4, and temperature range is 40 ° of C, the most again cleans, and then carries out blunt in the passivating solution in intrusion deactivation slot
The step changed, in the every L of passivating solution in described deactivation slot, the proportioning content of chemicals is: chromic anhydride 0.7g, brium carbonate 0.6g, phosphorus
Acid 1.1mL, afterwards by the capillary aluminium-alloy pipe washing after passivation, then will dry up it, and described zinc coat is 15um, the most again
The capillary aluminium-alloy pipe copper facing 10s again after zinc will be plated, particularly as follows: dedusting oil removing sound wave cleans pickling phosphorus
Changing activation copper facing washing to dry, described copper plate is 15um, the most again by the capillary aluminium alloy after copper facing
Manage tin plating 10s, specially utilize tin plating electrolyte to carry out work package to be plated in tin plating cylinder tin plating, obtain the second work package, then
Second work package utilizing in tin plating cylinder tin plating electrolyte carry out secondary tin plating, described tin coating is 10um, finally with stannum by above-mentioned
Capillary aluminium-alloy pipe after tin plating is welded together with base, and capillary aluminium-alloy pipe pipe one end is arranged with a shape for hat glue
Set, makes the temperature-sensing pipe of temperature controller.
With reference to the accompanying drawings shown in 1: based on all kinds of temperature controller aluminium alloy temperature-sensing pipes obtained by above-mentioned preparation method, including
Aluminium alloy body 1, shape for hat gum cover 2, described aluminium alloy body 1 has crossed one layer of zinc 3, and described zinc coat is 5-20um, in zinc layers
Having crossed one layer of copper 4 above, described copper plate is 5-20um, has crossed one layer of stannum 5 on layers of copper, and described tin coating is 5-15um institute
Stating aluminium alloy body 1 one end mouth of pipe and be provided with a rolling mouth 6, be fixed with a sealing gasket 7 in described rolling mouth, described aluminum closes
Also being arranged with a shape for hat gum cover 2 on the mouth of pipe of gold body 1 one end, the left end of shape for hat gum cover 2 is uncovered, and the aluminium alloy mouth of pipe is from shape for hat gum cover
2 uncovered be inserted into inside shape for hat gum cover, the internal perisporium of shape for hat gum cover tight contacts between with the outer tube wall of aluminium-alloy pipe, described shape for hat
The uncovered of gum cover is a bell, and described bell is that the outside by shape for hat gum cover is the most internally shunk and formed, described
Aluminium alloy tubular body is hollow pipe, and the described aluminium-alloy pipe other end mouth of pipe is for welding with temperature-sensing pipe base 8, and welding
Time tin welding.
The present invention replaces copper with aluminium alloy, first aluminium-alloy pipe oil removing, then cleans surface, be then plated with zinc and plating
Copper, finally cleans in second time, plates stannum, and zinc-plated purpose is for copper facing, and copper-plated purpose is in order to tin plating, tin plating mesh
Be in order to base weld, prevent gas leakage, better tightness, the when of welding be with tin welding with existing capillary brass pipe
Compare, solve the problem that cost is high, as described in table one: and conductivity is faster, and sensitivity is higher, faster than copper so that temperature-sensitive
The performance of pipe is more preferable, improves work efficiency and the quality of electrical equipment, is more worthy of popularization.
Table one is the contrast of embodiment 1-3 and capillary brass pipe pyroconductivity at different temperatures
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, on the premise of without departing from the technology of the present invention principle, it is also possible to make some improvement and modification, these improve and modification
Also should be regarded as protection scope of the present invention.
Claims (8)
1. the preparation method of a temperature controller aluminium alloy temperature-sensing pipe, it is characterised in that described temperature-sensing pipe of preparing includes following
Step is made:
Step one: by the step of capillary aluminium-alloy pipe surface degreasing；
Step 2: the capillary aluminium-alloy pipe after above-mentioned oil removing is carried out the step washed；
Step 3: the step that capillary aluminium-alloy pipe after having washed is the most zinc-plated, the zinc-plated time is 2s-6s；
Step 4: by above-mentioned zinc-plated after the most copper-plated step of capillary aluminium-alloy pipe, the copper-plated time is 8s-12s；
Step 5: the step that the capillary aluminium-alloy pipe after above-mentioned copper facing is washed again；
Step 6: by above-mentioned steps five, the step that capillary aluminium-alloy pipe after washing is the most tin plating, the tin plating time is
8s-12s；
Step 7: capillary aluminium-alloy pipe one end is arranged with a shape for hat gum cover；
Described step 3 is zinc-plated to be comprised the steps:
1) pickling: the capillary aluminium-alloy pipe after described washing is carried out pickling in pickle；Consisting of of described pickle:
H2SO412-18%, thiourea 0.1-0.12%, surplus is water, and unit is mass percent；
2) washing: the capillary aluminium-alloy pipe after pickling is carried out the step washed；
3) electrogalvanizing: by 2) in capillary aluminium-alloy pipe after washing immerse the plating that the electroplate liquid in galvanizing bath is zinc-plated, described
Liquid be the clear water chemicals measured being added in galvanizing bath by proportioning content stirs, mixed dissolution is made, plating
The pH value of liquid is 3-4.5, and temperature range is 15-60 DEG C；
4) capillary aluminium-alloy pipe removes galvanizing bath, again cleans with water；
5) by through step 4) capillary aluminium-alloy pipe immerse the step being passivated in the passivating solution in deactivation slot, described passivation
In the every L of passivating solution in groove, the proportioning content of chemicals is: chromic anhydride 0.4-1.1g, brium carbonate 0.4-0.8g, phosphoric acid 0.9-
1.2mL；
6) the capillary aluminium-alloy pipe after passivation is washed again, the step dried up after washing.
The preparation method of aluminium alloy temperature-sensing pipe the most according to claim 1, it is characterised in that: the oil removing of described step one is
Chemical deoiling and degreasing agent or water base metal cleaning agent remove the greasy dirt of surface of the work.
The preparation method of aluminium alloy temperature-sensing pipe the most according to claim 1, it is characterised in that: electrogalvanizing in described step 3
Time be 4s.
The preparation method of aluminium alloy temperature-sensing pipe the most according to claim 1, it is characterised in that electro-coppering in described step 4
Time be 10s.
The preparation method of aluminium alloy temperature-sensing pipe the most according to claim 1, it is characterised in that: described step 6 tin plating time
Between be 10s.
The preparation method of aluminium alloy temperature-sensing pipe the most according to claim 1, it is characterised in that described tin plating including walks as follows
Rapid: 1) to utilize tin plating electrolyte to carry out work package to be plated in tin plating cylinder tin plating, obtains the second work package, 2) in tin plating cylinder by
It is tin plating that two work packages utilize tin plating electrolyte to carry out secondary.
7. the temperature controller aluminium alloy temperature-sensing pipe prepared according to the arbitrary described preparation method of claim 1-6, including aluminium alloy
Body, shape for hat gum cover, described aluminium alloy body has plated one layer of zinc, has plated one layer of copper on zinc layers, plates on layers of copper
One layer of stannum, described aluminium alloy body one end mouth of pipe is provided with a rolling mouth, is fixed with a sealing gasket, institute in described rolling mouth
Stating and be also arranged with a shape for hat gum cover on the mouth of pipe of aluminium alloy body one end, the left end of shape for hat gum cover is uncovered, and the aluminium alloy mouth of pipe is from shape for hat
The uncovered of gum cover is inserted into inside shape for hat gum cover, and the internal perisporium of shape for hat gum cover tight contacts between with the outer tube wall of aluminium-alloy pipe, described
The uncovered of shape for hat gum cover is a bell, and described bell is that the outside by shape for hat gum cover is the most internally shunk and formed,
Described aluminium alloy tubular body is hollow pipe.
Temperature controller aluminium alloy temperature-sensing pipe the most according to claim 7, it is characterised in that: described zinc coat is that 5-20 is micro-
Rice, copper plate is 5-20 micron, and tin coating is 5-15 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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