CN103230918B - Extrusion residue displacement extrusion technology having effect of high-efficiency recovery of silver-based alloy extrusion residue waste materials - Google Patents
Extrusion residue displacement extrusion technology having effect of high-efficiency recovery of silver-based alloy extrusion residue waste materials Download PDFInfo
- Publication number
- CN103230918B CN103230918B CN201310079441.0A CN201310079441A CN103230918B CN 103230918 B CN103230918 B CN 103230918B CN 201310079441 A CN201310079441 A CN 201310079441A CN 103230918 B CN103230918 B CN 103230918B
- Authority
- CN
- China
- Prior art keywords
- silver
- pressure
- remaining
- extrusion
- base alloy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to an extrusion residue displacement extrusion technology having the effect of high-efficiency recovery of silver-based alloy extrusion residue waste materials. The traditional extrusion technology can produce a large amount of silver-based alloy extrusion residue waste materials and the recovery technology of the silver-based alloy extrusion residue waste materials produces environmental pollution, has a complex process and harsh technological conditions, and produces poor-quality recovered materials. The extrusion residue displacement extrusion technology comprises the following steps of 1, hot rolling, 2, fragmentation, 3, cold press molding, and 4, extrusion. The extrusion residue displacement extrusion technology realizes physical replacement recovery of silver-based alloy extrusion residues, avoids a metal silver practical recovery process, has simple processes, a low cost, no pollution, a high recovered product replacement rate and a high yield, and effectively improves a silver-based alloy material utilization rate.
Description
Technical field
The present invention relates to a kind of pressure remaining displacement extrusion process with the remaining waste material effect of high efficiente callback silver-base alloy pressure.
Background technology
Along with the development of industrial automation, the demand of the leading contact material of relay, contactor, on-load switch, Low Voltage Circuit Breaker and the device for switching such as household electrical appliance, car electrics is also increasing, contact material is one of important materials in current delivery and transfer process, it is core component and the critical material of device for switching, the task of burden on-off circuit and load current, material property determines connecting-disconnecting function and the contact reliability of electric switch.Traditional contact material is leading is all silver-based contact material, is usually made up of silver and cadmium oxide, tin oxide, nickel, iron, graphite etc.The manufacturing process of silver-based electric contact material is divided into two large classes substantially: one is melting internal oxidation, and dominating process route is intermediate frequency (IF) smelting → ingot casting → alloy wire drawing → oxidation → extruding → oxidation wire drawing etc.; Two is powder metallurgic methods, dominating process route is mixing → shaping → fire → extruding → wire drawing, these two kinds of techniques all have to pass through extrusion process makes materials processing shaping, extrusion process determines again each single extrusion all can the remaining generation of pressure, and pressure remaining in containing a large amount of impurity, must as waste disposal, the lumber recovery of this manufacture of materials being also declines, and produces the key factor of silver-base alloy waste material.Along with socioeconomic fast development, cost of human resources, the cost of raw material and Environmental costs multiplication.As the development hindering enterprise more than waste disposal pressure to a certain extent, therefore increase income and decrease expenditure, to control cost the emphases of supervision of Cheng Liao enterprise, for expensive metal, the control of material cost is then particularly crucial, domestic noble silver scarcity of resources, simultaneously because silver-colored excellent electric property, make it in electrical industry, have very large demand, therefore saving silver resource is necessary, in the manufacturing process of silver tipped contact material.Usual employing reduces the wastage, the recycling improving lumber recovery and waste material reduces material cost, improve the utilization rate of silver, reach the object of joint silver, the loss of material and lumber recovery can be controlled in desirable scope at present by the improvement of technology and fine-grained management, but traditional thinking and traditional technique are but remained to the process of silver-colored waste material.
The operation producing waste material maximum in the production process of current silver contact material surely belongs to extrusion process, the remaining waste material of silver oxide pressure that current recovery extruding produces mainly contains two kinds: one is chemical reduction method: be dissolved in nitric acid by silver-colored waste material, by precipitation, filter and obtain AgNO3 solution, by adding villaumite, AgCl being precipitated, obtaining fine silver finally by fusion electrolysis, the method is in the process implemented, complex process, organic efficiency is lower, and the purity of recover silver is not high, wherein has a large amount of chemical reactions, a large amount of waste water can be produced, waste gas, waste residue, causes serious pollution to environment, meanwhile, the single recovery to ag material can waste other metal material, another kind is high temperature reduction method: this method is that silver-colored waste material is put into intermediate frequency (IF) smelting crucible, after making waste material high-temperature melting, add the reducing agents such as a certain proportion of charcoal wherein, finally add after slag former removes the gred and obtain silver alloy solution, then ingot casting is cast into, use as new silver alloy raw material, but this method directly can not obtain argent, and need quite high temperature and time, cause certain energy waste, technological temperature control and control climate quite complicated, and reduction efficiency is low, and easily form the defects such as cinder hole in ingot casting, which results in reclaim lumber recovery and loss higher.Affect the stability of product quality, obviously the method for these two kinds traditional recovery money base alloyed scraps all can not meet present energy-saving consumption-reducing, eco-friendly industrial development thinking simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is the above-mentioned defect how overcoming prior art, provides a kind of pressure remaining displacement extrusion process with the remaining waste material effect of high efficiente callback silver-base alloy pressure.
For solving the problems of the technologies described above, the pressure remaining displacement extrusion process originally with the remaining waste material effect of high efficiente callback silver-base alloy pressure comprises the following steps:
1) hot rolling:
Remaining for silver-base alloy pressure waste material is placed in soaking pit, at temperature 600 ~ 800 DEG C, heats 2 ~ 3h; Take out the remaining waste material of silver-base alloy pressure to be placed in milling train and to roll into the band that thickness is about 1.5 ~ 3mm; This strip surface is clean in scrubber polishing; Annealing; Obtain the remaining band of silver-base alloy pressure;
2) broken:
Remaining for the silver-base alloy obtained through step 1) process pressure band is sent in punch press and is broken for 10mm × 10mm ~ 30mm × 30mm; Obtain the remaining fragment of silver-base alloy pressure;
3) cold moudling:
First blank to be extruded is shaped to billet in pressure 10MPa first pressing; That then gets weight more than 1 pressure will through step 2) process the remaining fragment of silver-base alloy pressure obtained, uniform spreading on just molded billet, and makes marks at extruding billet tail end; Obtain cold moudling billet;
4) extrude:
Setting crush stroke, make itself and the cold moudling billet head end obtained through step 3) process to tail end mark apart from equal, cold moudling billet head end is sent into extruder, at the pressure of 15 ~ 25MPa by cold moudling billet shaped by fluid pressure, the afterbody of billet will be expressed to more than silver-base alloy pressure.
The afterbody of billet does not participate in the extruding of its leading portion similar in extrusion process, and after extruding terminates, the position after mark is formed more than pressure.
As optimization, in described step 1), Soaking Pit Temperature is 800 DEG C, and the heat time is 2h; Described thickness of strip is 2.5mm; Described annealing temperature is 750 DEG C, and annealing time is 2h.
As optimization, described step 2) in punch press fragmentation be of a size of 20mm × 20mm.
As optimization, in described step 3), the remaining weight of 1 pressure is 2Kg.
As optimization, in described step 4), extruder shaped by fluid pressure pressure is 20MPa.
The pressure remaining displacement extrusion process that the present invention has the remaining waste material effect of high efficiente callback silver-base alloy pressure carries out physical permutations recovery more than silver-base alloy pressure, and without the need to substantial, argent is reclaimed, its technique is simple, with low cost, removal process is environment friendly and pollution-free, reclaim the replacement rate of product and lumber recovery high, effectively raise the utilization rate of Pd-Ag substrate alloy material.
Accompanying drawing explanation
Replace extrusion process more than the pressure below in conjunction with accompanying drawing the present invention to the remaining waste material effect of high efficiente callback silver-base alloy pressure to be described further:
Fig. 1 is the process chart of the pressure remaining displacement extrusion process originally with the remaining waste material effect of high efficiente callback silver-base alloy pressure.
Detailed description of the invention
Embodiment one: the pressure remaining displacement extrusion process originally with the remaining waste material effect of high efficiente callback silver-base alloy pressure comprises the following steps:
1) hot rolling:
Get ten remaining waste materials of silver-base alloy pressure, be placed in soaking pit, at temperature 800 DEG C, heat 2h; Take out the remaining waste material of silver-base alloy pressure to be placed in milling train and to roll into the band that thickness is about 2.5mm; This strip surface is clean in scrubber polishing; Anneal 2h at temperature 700 DEG C; Obtain the remaining band of silver-base alloy pressure;
2) broken:
Remaining for the silver-base alloy obtained through step 1) process pressure band is sent in punch press and is broken for 20mm × 20mm; Obtain the remaining fragment of silver-base alloy pressure;
3) cold moudling:
First blank to be extruded is shaped to billet in pressure 10MPa first pressing; Then 2kg is got through step 2) process the remaining fragment of silver-base alloy pressure obtained, uniform spreading on just molded billet, and makes marks at extruding billet tail end; Obtain cold moudling billet;
4) extrude:
Setting crush stroke, make itself and the cold moudling billet head end obtained through step 3) process to tail end mark apart from equal, cold moudling billet head end is sent into extruder, at the pressure of 20MPa by cold moudling billet shaped by fluid pressure, the afterbody of billet will be expressed to more than silver-base alloy pressure.
The afterbody of billet does not participate in the extruding of its leading portion similar in extrusion process, and after extruding terminates, the position after mark is formed more than pressure.
Contrast test:
1. content of the test: get the silver-base alloy blank of 5 kinds of different sizes and number, often kind of silver-base alloy blank is divided into identical 2 groups, respectively with existing conventional extrusion technique and originally there is the remaining waste material effect of high efficiente callback silver-base alloy pressure pressure more than replace extrusion process extruding, detect Pd-Ag substrate alloy material extrusion bar rate.
2. result of the test: as shown in table 1,
Table 1
As can be seen from Table 1, the lumber recovery of conventional extrusion technique only has 85% ~ 90%, uses the pressure remaining displacement extrusion process originally with the remaining waste material effect of high efficiente callback silver-base alloy pressure to carry out extrusion bar rate and can bring up to 94% ~ 98%.
The present invention includes but be not limited to above-mentioned embodiment, any product meeting these claims and describe, all falls within protection scope of the present invention.
Claims (5)
1. there is a pressure remaining displacement extrusion process for the remaining waste material effect of high efficiente callback silver-base alloy pressure, it is characterized in that: this technique comprises the following steps:
1) hot rolling:
Remaining for silver-base alloy pressure waste material is placed in soaking pit, at temperature 600 ~ 800 DEG C, heats 2 ~ 3h; Take out the remaining waste material of silver-base alloy pressure and be placed in the band that milling train rolls into thickness 1.5 ~ 3mm; This strip surface is clean in scrubber polishing; Annealing; Obtain the remaining band of silver-base alloy pressure;
2) broken:
By through step 1) process the remaining band of silver-base alloy pressure obtained and send in punch press and be broken for 10mm × 10mm ~ 30mm × 30mm; Obtain the remaining fragment of silver-base alloy pressure;
3) cold moudling:
First blank to be extruded is shaped to billet in pressure 10MPa first pressing; Then get weight more than 1 pressure through step 2) process the remaining fragment of silver-base alloy pressure obtained, uniform spreading on just molded billet, and makes marks at extruding billet tail end; Obtain cold moudling billet;
4) extrude:
Setting crush stroke, make its with through step 3) process the cold moudling billet head end that obtains to tail end mark apart from equal, by cold moudling billet head end feeding extruder, at the pressure of 15 ~ 25MPa by cold moudling billet shaped by fluid pressure.
2. the pressure remaining displacement extrusion process with the remaining waste material effect of high efficiente callback silver-base alloy pressure according to claim 1, is characterized in that: described step 1) in Soaking Pit Temperature be 800 DEG C, the heat time is 2h; Described thickness of strip is 2.5mm; Described annealing temperature is 750 DEG C, and annealing time is 2h.
3. the pressure remaining displacement extrusion process with the remaining waste material effect of high efficiente callback silver-base alloy pressure according to claim 1, is characterized in that: described step 2) in punch press fragmentation be of a size of 20mm × 20mm.
4. the pressure remaining displacement extrusion process with the remaining waste material effect of high efficiente callback silver-base alloy pressure according to claim 1, is characterized in that: described step 3) in the remaining weight of 1 pressure be 2Kg.
5. the pressure remaining displacement extrusion process with the remaining waste material effect of high efficiente callback silver-base alloy pressure according to claim 1, is characterized in that: described step 4) in extruder shaped by fluid pressure pressure be 20MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310079441.0A CN103230918B (en) | 2013-03-12 | 2013-03-12 | Extrusion residue displacement extrusion technology having effect of high-efficiency recovery of silver-based alloy extrusion residue waste materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310079441.0A CN103230918B (en) | 2013-03-12 | 2013-03-12 | Extrusion residue displacement extrusion technology having effect of high-efficiency recovery of silver-based alloy extrusion residue waste materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103230918A CN103230918A (en) | 2013-08-07 |
| CN103230918B true CN103230918B (en) | 2015-03-25 |
Family
ID=48879026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310079441.0A Active CN103230918B (en) | 2013-03-12 | 2013-03-12 | Extrusion residue displacement extrusion technology having effect of high-efficiency recovery of silver-based alloy extrusion residue waste materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103230918B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108580551A (en) * | 2017-04-28 | 2018-09-28 | 李文敏 | The technique for producing hot rolling standard size rod iron and band steel using the coil of strip waste material after cutting |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2164701T3 (en) * | 1993-03-03 | 2002-03-01 | Roosth Sam | METHOD FOR TREATING SOLID WASTE. |
| JP3664586B2 (en) * | 1998-06-25 | 2005-06-29 | 同和鉱業株式会社 | Method and apparatus for metal recovery from solid waste |
| CN101658940B (en) * | 2009-09-25 | 2011-11-16 | 北京工业大学 | Method for recycling and regenerating hard alloy |
| CN102909210B (en) * | 2011-08-05 | 2015-06-17 | 上海勃来特商贸有限公司 | Process based on hot extrusion cold press technology for recycling waste composite aluminum foil material |
-
2013
- 2013-03-12 CN CN201310079441.0A patent/CN103230918B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN103230918A (en) | 2013-08-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103352136B (en) | Copper-base contact material and manufacture craft | |
| CN101944441B (en) | Silver zinc oxide electric contact material and preparation method thereof | |
| CN103966475B (en) | A kind of copper chromium titanium alloy osculatory and preparation method thereof | |
| CN101202168A (en) | Technique for preparation of novel silver zinc oxide contact material | |
| CN103924088A (en) | Method for recovering and treating waste batteries or materials containing Co and/or Ni | |
| CN101127253B (en) | Silver nickel electricity-conductive ceramic electrical contact material and its production method | |
| CN101709401B (en) | Cu-Cr in-situ composite with boron, silver and rare earth elements added and preparation method thereof | |
| CN103276216B (en) | Method for recovering silver from waste silver catalyst | |
| CN103614588A (en) | Preparation method of silver/silver alloy microwire | |
| CN103469007B (en) | Senior terminal connector copper alloy and its preparation method and application | |
| CN103740937A (en) | Method for recycling silver tin oxide waste | |
| CN104278291A (en) | Method of directly melting and molding scrap copper to extract copper by electrolysis | |
| CN100562956C (en) | The manufacture method of high temperature resistant silver oxide contact tip material | |
| CN103230918B (en) | Extrusion residue displacement extrusion technology having effect of high-efficiency recovery of silver-based alloy extrusion residue waste materials | |
| CN1844426A (en) | Method for producing dispersion strengthening copper alloy materials | |
| CN108672704A (en) | A kind of die forming preparation method of aluminum oxide dispersion copper alloy spot welding electrode cap | |
| CN102259188B (en) | Method for producing high-energy rare earth powder alloy electrical contact material | |
| CN101974698B (en) | Method for chloridizing, refining and purifying old bushing platinum-rhodium alloy for glass fiber | |
| CN101956075A (en) | Method for recovering metal from AgSnO material | |
| CN101717875A (en) | Chromium bronze alloy material and preparation method thereof | |
| CN1141419C (en) | Anode plate for electrolyzing metal manganese | |
| CN112475295B (en) | Silver ferric oxide electric contact material with oxide particles dispersed and distributed and preparation method thereof | |
| CN104625591A (en) | Novel method for producing high-conductivity oxygen-free specially-shaped copper bars | |
| CN104588672A (en) | Preparation method of in-situ doped copper-bearing tin oxide powder and silver tin oxide material | |
| CN105349818A (en) | Oxide local graded distribution type electric contact material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |