CN109072455A - A kind of high-precision cleaning process of gold and silver coin billet cake - Google Patents
A kind of high-precision cleaning process of gold and silver coin billet cake Download PDFInfo
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- CN109072455A CN109072455A CN201780024558.5A CN201780024558A CN109072455A CN 109072455 A CN109072455 A CN 109072455A CN 201780024558 A CN201780024558 A CN 201780024558A CN 109072455 A CN109072455 A CN 109072455A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims abstract description 120
- 230000008569 process Effects 0.000 title claims abstract description 117
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 50
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 239000010931 gold Substances 0.000 title claims abstract description 50
- 229910052737 gold Inorganic materials 0.000 title claims abstract description 50
- 239000004332 silver Substances 0.000 title claims abstract description 42
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 42
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 163
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 161
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 161
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 230000002000 scavenging effect Effects 0.000 claims abstract description 12
- 238000004945 emulsification Methods 0.000 claims description 37
- 238000001035 drying Methods 0.000 claims description 33
- 239000000839 emulsion Substances 0.000 claims description 32
- 238000004821 distillation Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 16
- 238000011084 recovery Methods 0.000 claims description 12
- 229910001872 inorganic gas Inorganic materials 0.000 claims description 8
- 238000004064 recycling Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 10
- 239000012459 cleaning agent Substances 0.000 abstract description 8
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 26
- 238000005520 cutting process Methods 0.000 description 12
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 239000000428 dust Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- -1 various greasy dirts Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000006227 byproduct Substances 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- AJDIZQLSFPQPEY-UHFFFAOYSA-N 1,1,2-Trichlorotrifluoroethane Chemical compound FC(F)(Cl)C(F)(Cl)Cl AJDIZQLSFPQPEY-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/024—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing hydrocarbons
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/06—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using emulsions
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a kind of high-precision cleaning processes of gold and silver coin billet cake, it is related to workpiece surface cleaning field, process including setting gradually: it emulsifies, vacuum cuts water, the bath of hydrocarbon cleaning, vacuum is washed and cleaned with dry and gas phase, by the control to vacuum degree, cleaning agent temperature, ultrasonic frequency and scavenging period in each process, to form the high-precision cleaning to gold and silver coin billet cake.The present invention is thorough to pollutant process, and yields is high, each process can high degree of automation, and each process is all made of the cleaning agent of environmental protection, meets environmental requirement.
Description
The present invention relates to workpiece surfaces to clear up field, in particular to a kind of high-precision cleaning process of gold and silver coin billet cake.
It is frequently necessary to clean the material strip before processing in industrial processes, with the requirement to environment personal safety, the outstanding cleaning agent CFC-113 (freon) for the cleaning industry being once widely used and 1.1.1- trichloroethanes (ethane) are completely forbidden production, import, use, and the solvent of the hydrocarbon system such as hydrocarbon solution becomes substitute.Hydrocarbon solution is applied to the industries such as hardware, jewellery, clock and watch, automobile and motorcycle, space flight and aviation, electronics, electrical, liquid crystal, semiconductor, various greasy dirts, grease can be effectively removed and help weldering resin, buffing wax etc..
Gold and silver coin is the finished product by gold and silver coin billet cake after over cleaning, drying, coining and plated film.The clean level of gold and silver coin billet cake cleaning directly affects the quality of final products, since gold and silver coin billet cake is the raw material (or semi-finished product) for preparing final products, gold and silver coin billet cake is referred to as gold and silver coin parent part.The way of traditional gold and silver coin parent part (or base cake) cleaning is: the manual manual pure water cleaning of ultrasonic cleaning-- hot air circulation is dry, wherein, manual ultrasonic cleaning carries out in aqueous cleaning agent, the aqueous cleaning agent is mainly surfactant, reaches cleaning purpose by the effects of emulsification of surfactant, infiltration, cleaning.But traditional method has the following problems:
One, easily there is the residual such as watermark, oxidation, metal dust in the product surface after cleaning, and fraction defective is up to 8%-30%；
Two, cleaning agent is not environmentally friendly enough, and generation wastewater flow rate is big, pollutes environment, and wastewater treatment is costly；
Three, Manual-cleaning low efficiency.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of high-precision cleaning process of gold and silver coin billet cake, which has the advantages that without discharge, pollution-free, stay in grade, yield is high, at low cost and cleaning efficiency is high.
In order to solve the above-mentioned technical problem, the technical scheme is that, a kind of high-precision cleaning process of gold and silver coin billet cake, including the following process set gradually:
Workpiece is placed in the hydrocarbon emulsion cleaner that temperature is 30~50 DEG C by emulsification in the case where vacuum degree is the vacuum condition of -65KPa, while the ultrasonic wave that frequency is 28KHz is accessed hydrocarbon emulsion cleaner, workpiece 480~720s of throwing in hydrocarbon emulsion cleaner；
Vacuum cuts water, and in the case where vacuum degree is the vacuum condition of -75KPa, it is that 30~50 DEG C hydrocarbon cuts aqua that workpiece, which is placed in temperature,
480~720s of throwing in solution；
Hydrocarbon cleaning, in the case where vacuum degree is the vacuum condition of -65KPa, workpiece, which is placed in temperature, is in 45~50 DEG C of hydrocarbon solution, at the same by frequency be 40KHz, size is that 50~100% ultrasonic waves access in hydrocarbon solution, workpiece 480~720s of throwing in hydrocarbon solution；
Vacuum bath is washed and drying, under conditions of vacuum degree is -90KPa, workpiece is first placed in progress vacuum bath in the hydrocarbon vapor that temperature is 90~110 DEG C to wash, scavenging period is 30~60s, after completion vacuum bath is washed, adjustment vacuum degree is -100KPa, and dry 360~720s under the conditions of temperature is 90~110 DEG C；
Gas phase cleaning, under conditions of vacuum degree is less than 4Pa, it is passed through the inorganic gas of 100~400ml per minute, and inorganic gas resolves into the ion like striking work surface to run at high speed under the action of radio-frequency power supply, the gas phase cleaning under vacuum condition is formed, scavenging period is 180~360s.
Preferably, the inorganic gas in gas phase cleaning process is selected from but not limited to O2、H2、N2、Ar。
Preferably, hydrocarbon cleaning process is divided into continuous first time hydrocarbon cleaning and second of hydrocarbon cleaning, process is equal are as follows: in the case where vacuum degree is the vacuum condition of -65KPa, workpiece is placed in the hydrocarbon solution that temperature is 45~50 DEG C, it is simultaneously 40KHz by frequency, size is that 50~100% ultrasonic waves access in hydrocarbon solution, workpiece 240~360s of throwing in hydrocarbon solution, the hydrocarbon solution after second of hydrocarbon cleaning flow to first time hydrocarbon cleaning.
It is further preferred that being provided with distillation recovery process between first time hydrocarbon cleaning and second of hydrocarbon cleaning, it is distilled to recover process, first time hydrocarbon cleaning, second of hydrocarbon cleaning forming circuit.
Still further preferably, the recycling frequency for being distilled to recover process is 8~10H/ times, and distillation time: 360~600s, the recovered liquid after distillation are back in second of hydrocarbon cleaning.
Preferably, vacuum bath wash with drying process be divided into primary and backup vacuum bath wash with it is dry, it include that two stages are washed and dry in vacuum bath: under conditions of vacuum degree is -90KPa, workpiece is first placed in progress vacuum bath in the hydrocarbon vapor that temperature is 90~110 DEG C to wash, scavenging period is 15~30s, completes vacuum bath and washes the stage, then adjusting vacuum degree is -100KPa, and dry 180~360s under the conditions of temperature is 90~110 DEG C, complete drying stage.
Preferably, emulsification process is divided into continuous emulsification cleaning twice: for the first time, in the case where vacuum degree is the vacuum condition of -65KPa, workpiece is placed in the hydrocarbon emulsion cleaner that temperature is 30~50 DEG C, the ultrasonic wave that frequency is 28KHz is accessed into hydrocarbon emulsion cleaner simultaneously, workpiece 240~360s of throwing in hydrocarbon emulsion cleaner, second of repetition for first time process.
Preferably, it is that continuous vacuum twice cuts water that vacuum, which cuts moisture: for the first time, in the case where vacuum degree is the vacuum condition of -75KPa, it is that 30~50 DEG C hydrocarbon cuts 240~360s of throwing in aqua that workpiece, which is placed in temperature, is for second the repetition of first time process.A kind of high-precision cleaning process of gold and silver coin billet cake, including the following process set gradually:
Base cake is placed in the hydrocarbon emulsion cleaner that temperature is 20~40 DEG C by emulsification in the case where vacuum degree is the vacuum condition of -65KPa, while the ultrasonic wave that frequency is 40KHz is accessed hydrocarbon emulsion cleaner, base cake throwing in hydrocarbon emulsion cleaner
480~720s；
Vacuum cuts water, and in the case where vacuum degree is the vacuum condition of -65KPa, it is that 20~40 DEG C hydrocarbon cuts 480~720s of throwing in aqua that base cake, which is placed in temperature,；
Hydrocarbon cleaning, in the case where vacuum degree is the vacuum condition of -75KPa, base cake, which is placed in temperature, is in 30~50 DEG C of hydrocarbon solution, at the same by frequency be 40KHz, size is that 50~100% ultrasonic waves access in hydrocarbon solution, base cake 240~360s of throwing in hydrocarbon solution；
Vacuum bath is washed and drying, under conditions of vacuum degree is -90KPa, base cake is first placed in progress vacuum bath in the hydrocarbon vapor that temperature is 90~110 DEG C to wash, scavenging period is 15~30s, after completion vacuum bath is washed, adjustment vacuum degree is -100KPa, and dry 120~360s under the conditions of temperature is 90~110 DEG C.
Preferably, the hydrocarbon solution waste liquid during the hydrocarbon cleaning is distilled to recover, hydrocarbon solution after the recovery is added in the hydrocarbon cleaning process, and the recycling frequency for being distilled to recover process is 8~10H/ times, distillation time: 360~600s.
Preferably, the emulsification process is divided into continuous emulsification twice: for the first time, in the case where vacuum degree is the vacuum condition of -65KPa, base cake is placed in the hydrocarbon emulsion cleaner that temperature is 20~40 DEG C, the ultrasonic wave that frequency is 40KHz is accessed into hydrocarbon emulsion cleaner simultaneously, base cake 240~360s of throwing in hydrocarbon emulsion cleaner, second of repetition for first time process.
Preferably, it is that continuous vacuum twice cuts water that the vacuum, which cuts moisture: for the first time, in the case where vacuum degree is the vacuum condition of -65KPa, it is that 20~40 DEG C hydrocarbon cuts 240~360s of throwing in aqua that base cake, which is placed in temperature, is for second the repetition of first time process.
By adopting the above technical scheme, by emulsification cleaning, vacuum cut water, hydrocarbon cleaning, vacuum bath wash with dry and gas phase cleaning process combination, emulsification process carries out emulsification cleaning for dirty and product surface the gold and silver powder such as product surface lapping liquid, finger-marks, dust；Vacuum cuts water conservancy project sequence for moisture during emulsification cleaning and dirty, makes moisture and dirty is sunken to bottom from product surface displacement separation；Hydrocarbon cleaning process cuts aqua and is generally non-one-component for cutting aqua and not removing thorough gold and silver powder, and convection drying product surface is also easy to produce mark or oxidation, and hydrocarbon is single substance, is conducive to subsequent drying and guarantees product quality；Vacuum bath, which is washed, cleans with drying process for preheating and noble and unsullied net liquid, and the combination in two stages can reach thoroughly dry purpose；Gas phase cleaning process is used to wash vacuum bath the reinforcement cleaning process with drying process, while also having the protection to gold and silver coin, aoxidizes gold and silver coin not.The present invention is thorough to pollutant process, and yields is high, each process can high degree of automation, and each process is all made of the cleaning agent of environmental protection, meets environmental requirement.
Fig. 1 is a kind of process flow chart of the high-precision cleaning process of gold and silver coin billet cake of the present invention.
Fig. 2 is the process flow chart of the high-precision cleaning process of gold and silver coin billet cake of another embodiment of the present invention.
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.It should be noted that being used to help understand the present invention for the explanation of these embodiments, but and do not constitute a limitation of the invention.In addition, technical characteristic involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
As shown in Figure 1, process setting of the invention is successively are as follows: emulsification cleaning-vacuum cuts water-hydrocarbon cleaning-vacuum bath and washes and clean with drying-gas phase, the present embodiment is according to the cleaning characteristics of gold and silver coin, emulsification cleaning, vacuum are cut into water, hydrocarbon cleaning is disposed as repeating twice, to enhance the yields of gold and silver coin cleaning, and in the case where process is not provided with into duplicate situation, the yields of gold and silver coin cleaning also can satisfy requirement.
The principle of the present invention are as follows: pass through the emulsification of hydrocarbon emulsifier, the dirty disengaging product surface such as the lapping liquid by product surface, then the hydrocarbon dehydration permutation function for cutting aqua is recycled, and it is dirty with cut the immiscible easy layering of aqua (dirty and water density is greatly in lower layer), it is finally cleaned using gas phase, is finally reached the purpose that the dirty thorough removing of product surface is clean.
Emulsification process is divided into continuous first time emulsification cleaning and second of emulsification cleaning, the process of emulsification cleaning is identical twice, its process is equal are as follows: in the case where vacuum degree is the vacuum condition of -65KPa, workpiece is placed in the hydrocarbon emulsion cleaner that temperature is 30~50 DEG C, the ultrasonic wave that frequency is 28KHz is accessed into hydrocarbon emulsion cleaner simultaneously, workpiece 240~360s of throwing in hydrocarbon emulsion cleaner, the process carries out emulsification cleaning mainly for dirty and product surface the gold and silver powder such as gold and silver coin surface grinding liquid, finger-marks, dust.The hydrocarbon emulsion cleaner of this process meets environmental requirement, and effect on environment is small.
Vacuum cuts water conservancy project sequence and is divided into that continuous first time vacuum cuts water and second of vacuum cuts water, twice vacuum cut water process it is identical, its process is equal are as follows: in the case where vacuum degree is the vacuum condition of -75KPa, it is that 30~50 DEG C hydrocarbon cuts 240~360s of throwing in aqua that workpiece, which is placed in temperature, the process mainly in emulsification process moisture and dirty removal, make moisture and it is dirty from product surface displacement, separate and be sunken to the hydrocarbon bottom for cutting aqua.The hydrocarbon aqua of cutting of this process meets environmental requirement, and effect on environment is small.
Hydrocarbon cleaning process is divided into continuous first time hydrocarbon cleaning and second of hydrocarbon cleaning, the process of hydrocarbon cleaning is identical twice, its process is equal are as follows: in the case where vacuum degree is the vacuum condition of -65KPa, workpiece is placed in the hydrocarbon solution that temperature is 45~50 DEG C, it is simultaneously 40KHz by frequency, size is that 50~100% ultrasonic waves access in hydrocarbon solution, workpiece 240~360s of throwing in hydrocarbon solution.The process is for cutting aqua and do not remove thorough gold and silver powder, the aqua of cutting used in water conservancy project sequence is cut due to vacuum and is generally non-one-component, convection drying product surface is also easy to produce mark or oxidation, and the hydrocarbon solution in this process is generally relatively single substance, is conducive to subsequent drying and guarantees product quality.
In order to make hydrocarbon solution obtain most adequately utilizing, pipeline is provided between second of hydrocarbon cleaning and first time hydrocarbon cleaning, the pipeline allows the hydrocarbon solution after second of hydrocarbon cleaning to flow to first time hydrocarbon cleaning, due to the subsequent step that second of hydrocarbon cleaning is first time hydrocarbon cleaning, the pollution level of solution is smaller, can utilize again in first time hydrocarbon cleaning.In order to guarantee the recycling of first time hydrocarbon cleaning, distillation recovery process is provided between first time hydrocarbon cleaning and second of hydrocarbon cleaning,
It is distilled to recover process, first time hydrocarbon cleaning, second of hydrocarbon cleaning forming circuit, the hydrocarbon solution flow direction in first time hydrocarbon cleaning is distilled to recover process, is distilled to recover after the completion of process recycling i.e..Distillation recovery process main body is distillation recovery machine.The recycling frequency for being distilled to recover process is 8~10H/ times, and distillation time: 360~600s, the recovered liquid after distillation are back in second of hydrocarbon cleaning.
Vacuum bath wash with drying process be divided into primary and backup vacuum bath wash with it is dry: include that two stages are washed and dry in vacuum bath, under conditions of vacuum degree is -90KPa, workpiece is first placed in progress vacuum bath in the hydrocarbon vapor that temperature is 90~110 DEG C to wash, scavenging period is 15~30s, it completes vacuum bath and washes the stage, then adjustment vacuum degree is -100KPa, and dry 180~360s under the conditions of temperature is 90~110 DEG C, completes drying stage.Above-mentioned high temperature hydrocarbon vapor is generated by hydrocarbon solution through steam generator, and the hydrocarbon solution of steam generator is from distillation recovery process.In attached drawing, primary vacuum bath is washed indicated by the solid line with drying, and spare vacuum bath is washed and is represented by dashed line with drying.Primary and backup vacuum bath is washed and the dry use that is staggered, when being washed using primary vacuum bath with drying, then the bath of spare vacuum is washed does not run with drying, which ensure that the safe handling of the process, primary and backup vacuum bath, which is washed, can carry out rotation with drying, avoid the generation of failure, and even if breaking down, since the spare vacuum bath of equipment is washed and drying, it is ensured that the normal operation of entire cleaning process.This process is mainly used for preheating and the cleaning of noble and unsullied net liquid, and the combination in two stages can reach thoroughly dry purpose.
Gas phase cleaning process, its process are as follows: workpiece is placed in vacuum degree as (vacuum degree is less than 4Pa under conditions of 3Pa, 3Pa is taken to illustrate at this), it is passed through the inorganic gas of 100~400ml per minute, and inorganic gas resolves into the ion like striking work surface to run at high speed under the action of radio-frequency power supply, the gas phase cleaning under vacuum condition is formed, scavenging period is 180~360s, which is selected from O2、H2、N2, one of Ar or a variety of, but be not limited to these types of gas.Gas phase cleaning process is used to wash reinforcement cleaning process with drying process to vacuum bath, while also having the protection to gold and silver coin, while cleaning, Yu Jinyin coin Surface Creation layer oxide film, to make gold and silver coin not vulnerable to oxidation.
As shown in Figure 2, the process setting of present embodiment is successively are as follows: emulsification-vacuum is cut water-hydrocarbon cleaning-vacuum bath and washed and drying, the present embodiment is according to the cleaning characteristics of gold and silver coin billet cake, emulsification, vacuum are cut into water, are set as repeating twice, to enhance the yields of gold and silver coin cleaning, and in the case where process is not provided with into duplicate situation, the yields of gold and silver coin billet cake cleaning also can satisfy requirement.
The principle of the present invention are as follows: pass through the emulsification of hydrocarbon emulsifier, the dirty disengaging product surface such as the lapping liquid by product surface, then the hydrocarbon dehydration permutation function for cutting aqua is recycled, and it is dirty with cut the immiscible easy layering (dirty and water density is greatly in lower layer) of aqua, be finally reached by product surface it is dirty it is thorough remove cleaning purpose.
Emulsification process is divided into continuous first time emulsification cleaning and second of emulsification cleaning, its process is equal are as follows: in the case where vacuum degree is the vacuum condition of -65KPa, base cake is placed in the hydrocarbon emulsion cleaner that temperature is 20~40 DEG C, the ultrasonic wave that frequency is 40KHz is accessed into hydrocarbon emulsion cleaner simultaneously, base cake 240~360s of throwing in hydrocarbon emulsion cleaner, the process is mainly for gold and silver coin
Surface grinding liquid, finger-marks, dust etc. are dirty and gold and silver powder of product surface carries out emulsification cleaning.The hydrocarbon emulsion cleaner of this process meets environmental requirement, and effect on environment is small.
Vacuum, which cuts water conservancy project sequence and is divided into continuous vacuum twice, cuts water, process is identical are as follows: in the case where vacuum degree is the vacuum condition of -65KPa, it is that 20~40 DEG C hydrocarbon cuts 240~360s of throwing in aqua that base cake, which is placed in temperature, the process mainly in emulsification process moisture and dirty removal, make moisture and it is dirty from product surface displacement, separate and be sunken to the hydrocarbon bottom for cutting aqua.The hydrocarbon aqua of cutting of this process meets environmental requirement, and effect on environment is small.
The cleaning process of hydrocarbon cleaning process are as follows: in the case where vacuum degree is the vacuum condition of -75KPa, base cake is placed in the hydrocarbon solution that temperature is 30~50 DEG C, it is simultaneously 40KHz by frequency, size is that 50~100% ultrasonic waves access in hydrocarbon solution, base cake 240~360s of throwing in hydrocarbon solution.The process is for cutting aqua and do not remove thorough gold and silver powder, the aqua of cutting used in water conservancy project sequence is cut due to vacuum and is generally non-one-component, convection drying product surface is also easy to produce mark or oxidation, and the hydrocarbon solution in this process is generally relatively single substance, is conducive to subsequent drying and guarantees product quality.
Hydrocarbon solution waste liquid in hydrocarbon cleaning process preferably enters a distillation recovery process, it is recycled so that hydrocarbon solution after the recovery to be added in the hydrocarbon cleaning process, the recycling frequency for being distilled to recover process is 8~10H/ times, distillation time: 360~600s.
Vacuum bath wash with drying process be divided into primary and backup vacuum bath wash with it is dry: include that two stages are washed and dry in vacuum bath, under conditions of vacuum degree is -90KPa, base cake is first placed in progress vacuum bath in the hydrocarbon vapor that temperature is 90~110 DEG C to wash, scavenging period is 15~30s, it completes vacuum bath and washes the stage, then adjustment vacuum degree is -100KPa, and dry 120~360s under the conditions of temperature is 90~110 DEG C, completes drying stage.Above-mentioned high temperature hydrocarbon vapor is generated by hydrocarbon solution through steam generator, and the hydrocarbon solution of steam generator is from distillation recovery process.This process is mainly used for preheating and the cleaning of noble and unsullied net liquid, and the combination in two stages can reach thoroughly dry purpose.
By adopting the above technical scheme, water, hydrocarbon cleaning are cut by emulsification, vacuum and vacuum bath are washed and the combination of drying process, emulsification process carries out emulsification cleaning for dirty and product surface the gold and silver powder such as product surface lapping liquid, finger-marks, dust；Vacuum cuts water conservancy project sequence for moisture during emulsification cleaning and dirty, makes moisture and dirty is sunken to bottom from product surface displacement separation；Hydrocarbon cleaning process cuts aqua and is generally non-one-component for cutting aqua and not removing thorough gold and silver powder, and convection drying product surface is also easy to produce mark or oxidation, and hydrocarbon is single substance, is conducive to subsequent drying and guarantees product quality；Vacuum bath, which is washed, cleans with drying process for preheating and noble and unsullied net liquid, the combination in two stages can reach thoroughly dry purpose, present embodiment process simplifies, it is thorough to pollutant process, yields is high, each process can high degree of automation, and each process be all made of environmental protection cleaning agent, meet environmental requirement.
By finished product after the method progress gold and silver coin billet cake cleaning using specific embodiment shown in FIG. 1 and specific embodiment shown in Fig. 2, result is compared, as shown in the table:
In conjunction with attached drawing, the embodiments of the present invention are described in detail above, but the present invention is not limited to described embodiments.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, a variety of change, modification, replacement and modification is carried out to these embodiments, are still fallen in protection scope of the present invention.
Claims (12)
- A kind of high-precision cleaning process of gold and silver coin billet cake, which is characterized in that including the following process set gradually:Workpiece is placed in the hydrocarbon emulsion cleaner that temperature is 30~50 DEG C by emulsification in the case where vacuum degree is the vacuum condition of -65KPa, while the ultrasonic wave that frequency is 28KHz is accessed hydrocarbon emulsion cleaner, workpiece 480~720s of throwing in hydrocarbon emulsion cleaner；Vacuum cuts water, and in the case where vacuum degree is the vacuum condition of -75KPa, it is that 30~50 DEG C hydrocarbon cuts 480~720s of throwing in aqua that workpiece, which is placed in temperature,；Hydrocarbon cleaning, in the case where vacuum degree is the vacuum condition of -65KPa, workpiece, which is placed in temperature, is in 45~50 DEG C of hydrocarbon solution, at the same by frequency be 40KHz, size is that 50~100% ultrasonic waves access in hydrocarbon solution, workpiece 480~720s of throwing in hydrocarbon solution；Vacuum bath is washed and drying, under conditions of vacuum degree is -90KPa, workpiece is first placed in progress vacuum bath in the hydrocarbon vapor that temperature is 90~110 DEG C to wash, scavenging period is 15~30s, after completion vacuum bath is washed, adjustment vacuum degree is -100KPa, and dry 180~360s under the conditions of temperature is 90~110 DEG C；Gas phase cleaning, under conditions of vacuum degree is less than 4Pa, it is passed through the inorganic gas of 100~400ml per minute, and inorganic gas resolves into the ion like striking work surface to run at high speed under the action of radio-frequency power supply, the gas phase cleaning under vacuum condition is formed, scavenging period is 180~360s.
- The high-precision cleaning process of gold and silver coin billet cake according to claim 1, which is characterized in that the inorganic gas in the gas phase cleaning process is selected from but not limited to O2、H2、N2、Ar。
- The high-precision cleaning process of gold and silver coin billet cake according to claim 1 or 2, it is characterized in that, the hydrocarbon cleaning process is divided into continuous first time hydrocarbon cleaning and second of hydrocarbon cleaning, process is equal are as follows: in the case where vacuum degree is the vacuum condition of -65KPa, workpiece is placed in the hydrocarbon solution that temperature is 45~50 DEG C, it is simultaneously 40KHz by frequency, size is that 50~100% ultrasonic waves access in hydrocarbon solution, workpiece 240~360s of throwing in hydrocarbon solution, the hydrocarbon solution after second of hydrocarbon cleaning flow to first time hydrocarbon cleaning.
- The high-precision cleaning process of gold and silver coin billet cake according to claim 3, it is characterized in that, distillation recovery process, the distillation recovery process, first time hydrocarbon cleaning, second of hydrocarbon cleaning forming circuit are provided between the first time hydrocarbon cleaning and second of hydrocarbon cleaning.
- The high-precision cleaning process of gold and silver coin billet cake according to claim 4, it is characterised in that: the recycling frequency for being distilled to recover process is 8~10H/ times, and distillation time: 360~600s, the recovered liquid after distillation are back in second of hydrocarbon cleaning.
- The high-precision cleaning process of gold and silver coin billet cake according to claim 1 or 2, it is characterized by: vacuum bath wash with drying process be divided into primary and backup vacuum bath wash with it is dry, it include that two stages are washed and dry in vacuum bath: under conditions of vacuum degree is -90KPa, workpiece is first placed in progress vacuum bath in the hydrocarbon vapor that temperature is 90~110 DEG C to wash, scavenging period is 15~30s, it completes vacuum bath and washes the stage, then adjustment vacuum degree is -100KPa, and dry under the conditions of temperature is 90~110 DEG C 180~360s completes drying stage.
- The high-precision cleaning process of gold and silver coin billet cake according to claim 1 or 2, it is characterized by: the emulsification process is divided into continuous emulsification twice: for the first time, in the case where vacuum degree is the vacuum condition of -65KPa, workpiece is placed in the hydrocarbon emulsion cleaner that temperature is 30~50 DEG C, the ultrasonic wave that frequency is 28KHz is accessed into hydrocarbon emulsion cleaner simultaneously, workpiece 240~360s of throwing in hydrocarbon emulsion cleaner, second of repetition for first time process.
- The high-precision cleaning process of gold and silver coin billet cake according to claim 1 or 2, it is characterized by: it is that continuous vacuum twice cuts water that the vacuum, which cuts moisture: for the first time, in the case where vacuum degree is the vacuum condition of -75KPa, it is that 30~50 DEG C hydrocarbon cuts 240~360s of throwing in aqua that workpiece, which is placed in temperature, is for second the repetition of first time process.
- A kind of high-precision cleaning process of gold and silver coin billet cake, which is characterized in that including the following process set gradually:Base cake is placed in the hydrocarbon emulsion cleaner that temperature is 20~40 DEG C by emulsification in the case where vacuum degree is the vacuum condition of -65KPa, while the ultrasonic wave that frequency is 40KHz is accessed hydrocarbon emulsion cleaner, base cake 480~720s of throwing in hydrocarbon emulsion cleaner；Vacuum cuts water, and in the case where vacuum degree is the vacuum condition of -65KPa, it is that 20~40 DEG C hydrocarbon cuts 480~720s of throwing in aqua that base cake, which is placed in temperature,；Hydrocarbon cleaning, in the case where vacuum degree is the vacuum condition of -75KPa, base cake, which is placed in temperature, is in 30~50 DEG C of hydrocarbon solution, at the same by frequency be 40KHz, size is that 50~100% ultrasonic waves access in hydrocarbon solution, base cake 240~360s of throwing in hydrocarbon solution；Vacuum bath is washed and drying, under conditions of vacuum degree is -90KPa, base cake is first placed in progress vacuum bath in the hydrocarbon vapor that temperature is 90~110 DEG C to wash, scavenging period is 15~30s, after completion vacuum bath is washed, adjustment vacuum degree is -100KPa, and dry 120~360s under the conditions of temperature is 90~110 DEG C.
- The high-precision cleaning process of gold and silver coin billet cake according to claim 9, it is characterized by: the hydrocarbon solution waste liquid during the hydrocarbon cleaning is distilled to recover, hydrocarbon solution after the recovery is added in the hydrocarbon cleaning process, the recycling frequency for being distilled to recover process is 8~10H/ times, distillation time: 360~600s.
- The high-precision cleaning process of gold and silver coin billet cake according to claim 9, it is characterized by: the emulsification process is divided into continuous emulsification twice: for the first time, in the case where vacuum degree is the vacuum condition of -65KPa, base cake is placed in the hydrocarbon emulsion cleaner that temperature is 20~40 DEG C, the ultrasonic wave that frequency is 40KHz is accessed into hydrocarbon emulsion cleaner simultaneously, base cake 240~360s of throwing in hydrocarbon emulsion cleaner, second of repetition for first time process.
- The high-precision cleaning process of gold and silver coin billet cake according to claim 9, it is characterized by: it is that continuous vacuum twice cuts water that the vacuum, which cuts moisture: for the first time, in the case where vacuum degree is the vacuum condition of -65KPa, it is that 20-40 DEG C hydrocarbon cuts 240~360s of throwing in aqua that base cake, which is placed in temperature, is for second the repetition of first time process.
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| CN2016103413185 | 2016-05-20 | ||
| CN201610341318.5A CN105970244A (en) | 2016-05-20 | 2016-05-20 | High-precision washing process for raw part of gold coin or silver coin |
| PCT/CN2017/085358 WO2017198232A1 (en) | 2016-05-20 | 2017-05-22 | High-precision washing process of gold and silver coin billet cake |
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| CN201780024558.5A Pending CN109072455A (en) | 2016-05-20 | 2017-05-22 | A kind of high-precision cleaning process of gold and silver coin billet cake |
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| CN110408944A (en) * | 2019-09-10 | 2019-11-05 | 昆山市飞荣达电子材料有限公司 | A kind of cleaning metal surface method |
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| CN107096744A (en) * | 2017-02-28 | 2017-08-29 | 深圳市鑫承诺环保产业股份有限公司 | A kind of high-precision cleaning of metal plastic component |
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| CN105970244A (en) | 2016-09-28 |
| WO2017198232A1 (en) | 2017-11-23 |
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