CN104141065A - Precision casting technique for copper-alloy casting - Google Patents
Precision casting technique for copper-alloy casting Download PDFInfo
- Publication number
- CN104141065A CN104141065A CN201410396031.3A CN201410396031A CN104141065A CN 104141065 A CN104141065 A CN 104141065A CN 201410396031 A CN201410396031 A CN 201410396031A CN 104141065 A CN104141065 A CN 104141065A
- Authority
- CN
- China
- Prior art keywords
- copper
- alloy
- casting
- zirconium
- melting furnace
- 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.)
- Pending
Links
Abstract
The invention discloses a precision casting technique for a copper-alloy casting. The precision casting technique for the copper-alloy casting comprises the following steps: firstly, heating a silica sol shell to 850-950 DEG C by virtue of a resistance furnace, placing the silica sol shell into a medium-frequency vacuum induction melting furnace, fixing the silica sol shell and carrying out heating and heat preservation on the silica sol shell by virtue of an induction coil of the medium-frequency vacuum induction melting furnace; secondly, mixing copper, chromium and zirconium alloy in proportion, placing the mixture into a magnesia crucible, vacuumizing, introducing protective gas, and heating until the metal is molten; thirdly, pouring molten metal obtained in the step two into the silica sol shell positioned in the medium-frequency vacuum induction melting furnace, turning off a heating switch of the medium-frequency vacuum induction melting furnace after pouring is finished, and taking the copper-alloy casting after the copper-alloy casting is cooled. The precision casting technique for the copper-alloy casting has the characteristics of simple preparation technology and good quality.
Description
Technical field
The present invention relates to casting field, be specifically related to a kind of precision casting process of copper-alloy casting.
Background technology
Casting process is that molten steel is injected in crystallizer, obtains continuously the process of strand, and it is the middle-chain that connects refining steel and rolled steel, is the important component part of STEELMAKING PRODUCTION.Crystallizer is the important component part of smeltery's continuous caster, and crystallizer copper pipe is the vitals of crystallizer.Due to the high-temperature molten steel crystallizer copper foundry goods of directly flowing through, for making continuous casting operation process stable, support equipment and operator safety, just require crystallizer copper foundry goods to have good high temperature resistant, wear-resistant and corrosion resistance nature again.Prior art is high temperature resistant, the wear-resistant and corrosion resistant performance that the crystallizer copper foundry goods by producing in the chromium plating of copper casting inwall with hard chromium improves copper casting, but the hardness of such copper casting, wear resistance etc. or limited.
The copper casting that has occurred at present chromium zirconium copper material abroad, so-called chromium zirconium copper refers to containing zirconium 0.08-0.1%, copper containing chromium 0.05-0.12%, owing to having added chromium and zirconium, hardness and the wear resistance of copper have greatly been improved, can guarantee that copper casting is indeformable, but equally the manufacture of copper casting has been brought to difficulty, because added chromium and zirconium, can make copper hardening become fragile, under existing technical qualification, in reverse extrusion, (be commonly called as punching or hot moulding, be about to copper ingot from centre punching with tubulation) and cold extrusion (be commonly called as cold moulding, be under normal temperature, to stretch copper casting to improve the hardness of copper casting) in technique, there will be copper casting problems of crack, not only cannot ensure the quality of products, manufacturing process that the more important thing is copper casting is complicated, manpower and materials and the time of cost are all a lot, once cause copper casting to be scrapped because cracking waits, the significant wastage of manpower and materials and time will be caused.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide that a kind of preparation technology is simple, the precision casting process of the measured copper-alloy casting of matter.
The technical scheme solving the problems of the technologies described above is as follows:
The precision casting process of copper-alloy casting, described copper alloy is chrome zirconium copper alloy, by weight percentage, in this chrome zirconium copper alloy, chromium content is: 0.4～1.2%, zirconium content is: 0.03～0.3%, and surplus is copper, casting technique is as follows:
Step 1, is heated to silicasol case after 850-950 ℃ by resistance furnace, put into intermediate frequency vacuum induction melting furnace and fix, simultaneously by the ruhmkorff coil of intermediate frequency vacuum induction melting furnace to silicasol case heating and thermal insulation;
Step 2, prepares copper and chromium, zirconium alloy in proportion, puts into Magnesia crucible, after vacuumizing, is filled with shielding gas, heats, until melting of metal;
Step 3, the molten metal that step 2 is obtained is poured into the silicasol case that is arranged in intermediate frequency vacuum induction melting furnace, closes the heater switch of intermediate frequency vacuum induction melting furnace after pouring, cooling rear taking-up foundry goods.
Preferably, in described chrome zirconium copper alloy, chromium content is: 0.9～1.2%, zirconium content is: 0.15～0.3%, and surplus is copper.
Preferably, in described chrome zirconium copper alloy, chromium content is: 1.05%, zirconium content is: 0.24%, and surplus is copper.
Preferably, in step 1, silicasol case is heated to 900 ℃ by resistance furnace.
Preferably, in step 2, copper is electrolytic copper, and protective gas is argon gas.
Preferably, in step 3, the cast of casting of metals process liquation is carried out under vacuum state.
Preferably, in step 3, when being cooled to cast(ing) surface obfuscation, take out foundry goods.
A copper-alloy casting, described copper alloy is chrome zirconium copper alloy, by weight percentage, in this chrome zirconium copper alloy, chromium content is: 0.4～1.2%, zirconium content is: 0.03～0.3%, and surplus is copper.
Preferably, chromium content is: 0.9～1.2%, zirconium content is: 0.15～0.3%, and surplus is copper.
Preferably, in described chrome zirconium copper alloy, chromium content is: 1.05%, zirconium content is: 0.24%, and surplus is copper.
The relative prior art of the present invention, owing to having adopted intermediate frequency vacuum induction melting furnace to carry out melting to metal, can improve metallurgical purity and casting compactness, reduce oxygen, nitrogen content, guarantee interiors of products quality, avoid casting flaw, mechanical property is obviously improved, add the mode that adopts precision casting, and without carrying out reverse extrusion and cold extrusion, this has just been avoided the problem of copper casting cracking, make the quality of foundry goods obtain assurance, the more important thing is the manufacturing process of having simplified copper casting, reduced human and material resources and time.
The present invention also has following characteristics:
1. in fusion process, metal is put in Magnesia crucible, prevented that zirconium and crucible from reacting and producing unnecessary material (for example, zirconium and plumbago crucible can react, and therefore can not adopt plumbago crucible);
2. adopt the mode of gradient-heated to be conducive to extend crucible life;
3. when being cooled to cast(ing) surface obfuscation, taking out foundry goods, is in order to reduce oxide skin, makes foundry goods reach precise measure.
Embodiment
Embodiment 1:
The precision casting process of copper-alloy casting, described copper alloy is chrome zirconium copper alloy, by weight percentage, in this chrome zirconium copper alloy, chromium content is: 0.4%, zirconium content is: 0.03%, and surplus is copper, casting technique is as follows:
Step 1, is heated to silicasol case after 850 ℃ by resistance furnace, put into intermediate frequency vacuum induction melting furnace and fix, simultaneously by the ruhmkorff coil of intermediate frequency vacuum induction melting furnace to silicasol case heating and thermal insulation;
Step 2, prepares electrolytic copper and chromium, zirconium alloy in proportion, puts into Magnesia crucible, after vacuumizing, is filled with argon gas, heats, until melting of metal;
Step 3, the molten metal that step 2 is obtained is poured into the silicasol case that is arranged in intermediate frequency vacuum induction melting furnace, the cast of casting of metals process liquation is carried out under vacuum state, after pouring, close the heater switch of intermediate frequency vacuum induction melting furnace, when being cooled to cast(ing) surface obfuscation, vacuum breaker takes out foundry goods.
Embodiment 2:
The precision casting process of copper-alloy casting, described copper alloy is chrome zirconium copper alloy, by weight percentage, in this chrome zirconium copper alloy, chromium content is: 0.9%, zirconium content is: 0.15%, and surplus is copper, casting technique is as follows:
Step 1, is heated to silicasol case after 900 ℃ by resistance furnace, put into intermediate frequency vacuum induction melting furnace and fix, simultaneously by the ruhmkorff coil of intermediate frequency vacuum induction melting furnace to silicasol case heating and thermal insulation;
Step 2, prepares electrolytic copper and chromium, zirconium alloy in proportion, puts into Magnesia crucible, after vacuumizing, is filled with argon gas, heats, until melting of metal;
Step 3, the molten metal that step 2 is obtained is poured into the silicasol case that is arranged in intermediate frequency vacuum induction melting furnace, the cast of casting of metals process liquation is carried out under vacuum state, after pouring, close the heater switch of intermediate frequency vacuum induction melting furnace, when being cooled to cast(ing) surface obfuscation, vacuum breaker takes out foundry goods.
Embodiment 3:
The precision casting process of copper-alloy casting, described copper alloy is chrome zirconium copper alloy, by weight percentage, in this chrome zirconium copper alloy, chromium content is: 1.05%, zirconium content is: 0.24%, and surplus is copper, casting technique is as follows:
Step 1, is heated to silicasol case after 950 ℃ by resistance furnace, put into intermediate frequency vacuum induction melting furnace and fix, simultaneously by the ruhmkorff coil of intermediate frequency vacuum induction melting furnace to silicasol case heating and thermal insulation;
Step 2, prepares electrolytic copper and chromium, zirconium alloy in proportion, puts into Magnesia crucible, after vacuumizing, is filled with nitrogen, heats, until melting of metal;
Step 3, the molten metal that step 2 is obtained is poured into the silicasol case that is arranged in intermediate frequency vacuum induction melting furnace, the cast of casting of metals process liquation is carried out under vacuum state, after pouring, close the heater switch of intermediate frequency vacuum induction melting furnace, when being cooled to cast(ing) surface obfuscation, vacuum breaker takes out foundry goods.
Embodiment 4:
The precision casting process of copper-alloy casting, described copper alloy is chrome zirconium copper alloy, by weight percentage, in this chrome zirconium copper alloy, chromium content is: 1.15%, zirconium content is: 0.27%, and surplus is copper, casting technique is as follows:
Step 1, is heated to silicasol case after 940 ℃ by resistance furnace, put into intermediate frequency vacuum induction melting furnace and fix, simultaneously by the ruhmkorff coil of intermediate frequency vacuum induction melting furnace to silicasol case heating and thermal insulation;
Step 2, prepares electrolytic copper and chromium, zirconium alloy in proportion, puts into Magnesia crucible, after vacuumizing, is filled with nitrogen, heats, until melting of metal;
Step 3, the molten metal that step 2 is obtained is poured into the silicasol case that is arranged in intermediate frequency vacuum induction melting furnace, the cast of casting of metals process liquation is carried out under vacuum state, after pouring, close the heater switch of intermediate frequency vacuum induction melting furnace, when being cooled to cast(ing) surface obfuscation, vacuum breaker takes out foundry goods.
Embodiment 5:
The precision casting process of copper-alloy casting, described copper alloy is chrome zirconium copper alloy, by weight percentage, in this chrome zirconium copper alloy, chromium content is: 1.2%, zirconium content is: 0.3%, and surplus is copper, casting technique is as follows:
Step 1, is heated to silicasol case after 920 ℃ by resistance furnace, put into intermediate frequency vacuum induction melting furnace and fix, simultaneously by the ruhmkorff coil of intermediate frequency vacuum induction melting furnace to silicasol case heating and thermal insulation;
Step 2, prepares electrolytic copper and chromium, zirconium alloy in proportion, puts into Magnesia crucible, after vacuumizing, is filled with nitrogen, heats, until melting of metal;
Step 3, the molten metal that step 2 is obtained is poured into the silicasol case that is arranged in intermediate frequency vacuum induction melting furnace, the cast of casting of metals process liquation is carried out under vacuum state, after pouring, close the heater switch of intermediate frequency vacuum induction melting furnace, when being cooled to cast(ing) surface obfuscation, vacuum breaker takes out foundry goods.
In the various embodiments described above, wherein the heat-processed of step 2 is gradient-heated, the detailed process of this gradient-heated is: the first power heating 3min with 10KW, again with the power heating 3min of 20KW, finally the rate that adds with 30KW heats, until after melting of metal, heating power is down to 20KW and is poured into a mould.
Except above-described embodiment, the present invention also provides the preparation method of silicasol case used in the various embodiments described above, and specific embodiment is as follows:
The formula of silicasol case is as follows:
By the formula of upper table, get sillimanite, wetting agent, defoamer, first wetting agent and defoamer are added in paint can, then add silicon sol, start to stir, in constantly stirring, add sillimanite, after all having added, continue to stir 6h～12h, stable rear its viscosity of surveying, the too high silicon sol that adds dilutes, too smallly be incorporated in a certain amount of sillimanite and supplement, until viscosity is qualified, then add solidifying agent to stir.The wax-pattern having washed is slowly immersed in paint can, wax-pattern is rotated and moved axially, allow coating fully and after on even gentle wax-pattern, take out and slowly turn to without piling, during drip phenomenon, spread again zircon sand, zircon sand is evenly invested on coating, and the granularity of the zircon sand of employing is 100-105 order.Then, by solid state sintering, make material granule surface form crystalline state bridging phase, make whole shell fixed, thereby cause the increase of investment shell intensity.Through experimental verification, when sintering temperature reaches 900-1200 ℃, solid state sintering completes, and shell retained strength no longer changes.When sintering temperature reaches 1200～1500 ℃. shell retained strength with maturing temperature along with temperature raises and increases gradually; When sintering temperature reaches while being greater than 1500 ℃, shell retained strength significantly increases.Therefore, in precision casting, control the maturing temperature of shell well, can effectively improve the shelling performance of silicasol case.
Claims (10)
1. the precision casting process of copper-alloy casting, is characterized in that, described copper alloy is chrome zirconium copper alloy, and by weight percentage, in this chrome zirconium copper alloy, chromium content is: 0.4～1.2%, zirconium content is: 0.03～0.3%, and surplus is copper, casting technique is as follows:
Step 1, is heated to silicasol case after 850-950 ℃ by resistance furnace, put into intermediate frequency vacuum induction melting furnace and fix, simultaneously by the ruhmkorff coil of intermediate frequency vacuum induction melting furnace to silicasol case heating and thermal insulation;
Step 2, prepares copper and chromium, zirconium alloy in proportion, puts into Magnesia crucible, after vacuumizing, is filled with shielding gas, heats, until melting of metal;
Step 3, the molten metal that step 2 is obtained is poured into the silicasol case that is arranged in intermediate frequency vacuum induction melting furnace, closes the heater switch of intermediate frequency vacuum induction melting furnace after pouring, cooling rear taking-up foundry goods.
2. the precision casting process of copper-alloy casting according to claim 1, is characterized in that, in described chrome zirconium copper alloy, chromium content is: 0.9～1.2%, zirconium content is: 0.15～0.3%, and surplus is copper.
3. the precision casting process of copper-alloy casting according to claim 1 and 2, is characterized in that, in described chrome zirconium copper alloy, chromium content is: 1.05%, zirconium content is: 0.24%, and surplus is copper.
4. the precision casting process of copper-alloy casting according to claim 1, is characterized in that, in step 1, silicasol case is heated to 900 ℃ by resistance furnace.
5. the precision casting process of copper-alloy casting according to claim 1, is characterized in that, in step 2, copper is electrolytic copper, and protective gas is argon gas.
6. the precision casting process of copper-alloy casting according to claim 1, is characterized in that, in step 3, the cast of casting of metals process liquation is carried out under vacuum state.
7. according to the precision casting process of the copper-alloy casting described in claim 1 or 6, it is characterized in that, in step 3, when being cooled to cast(ing) surface obfuscation, take out foundry goods.
8. a copper-alloy casting, is characterized in that, described copper alloy is chrome zirconium copper alloy, and by weight percentage, in this chrome zirconium copper alloy, chromium content is: 0.4～1.2%, zirconium content is: 0.03～0.3%, and surplus is copper.
9. the copper-alloy casting described in 8 as requested, is characterized in that, in described chrome zirconium copper alloy, chromium content is: 0.9～1.2%, zirconium content is: 0.15～0.3%, and surplus is copper.
10. copper-alloy casting according to claim 8 or claim 9, is characterized in that, in described chrome zirconium copper alloy, chromium content is: 1.05%, zirconium content is: 0.24%, and surplus is copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410396031.3A CN104141065A (en) | 2014-08-13 | 2014-08-13 | Precision casting technique for copper-alloy casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410396031.3A CN104141065A (en) | 2014-08-13 | 2014-08-13 | Precision casting technique for copper-alloy casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104141065A true CN104141065A (en) | 2014-11-12 |
Family
ID=51850403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410396031.3A Pending CN104141065A (en) | 2014-08-13 | 2014-08-13 | Precision casting technique for copper-alloy casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104141065A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105983657A (en) * | 2015-02-04 | 2016-10-05 | 河南科丰新材料有限公司 | Method for forming chrome bronze casting through investment casting under vacuum environment |
| CN111318657A (en) * | 2018-12-14 | 2020-06-23 | 宁波江丰电子材料股份有限公司 | Method for manufacturing titanium target copper-chromium alloy back plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002003963A (en) * | 2000-06-22 | 2002-01-09 | Nippon Steel Corp | Cu-Cr-Zr ALLOY EXCELLENT IN FATIGUE CHARACTERISTIC, ITS PRODUCTION METHOD AND COOLING ROLL FOR CONTINUOUS CASTING |
| CN1351920A (en) * | 2000-11-15 | 2002-06-05 | 中国科学院金属研究所 | Super thick wall chromium zirconium copper tube for resistance welding holder electrode arm and preparing method |
| CN101327560A (en) * | 2008-07-17 | 2008-12-24 | 东北大学 | Method for producing two-stage type non-joint-cutting crystallizer sheathed tube for soft-contact electromagnetic continuous casting |
| CN102994920A (en) * | 2012-11-26 | 2013-03-27 | 天津大学 | High and low temperature compound resistance reduction treatment method for copper and copper alloy |
| CN103911524A (en) * | 2014-03-21 | 2014-07-09 | 中国科学院金属研究所 | Preparation method of copper rare earth binary intermediate alloy |
-
2014
- 2014-08-13 CN CN201410396031.3A patent/CN104141065A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002003963A (en) * | 2000-06-22 | 2002-01-09 | Nippon Steel Corp | Cu-Cr-Zr ALLOY EXCELLENT IN FATIGUE CHARACTERISTIC, ITS PRODUCTION METHOD AND COOLING ROLL FOR CONTINUOUS CASTING |
| CN1351920A (en) * | 2000-11-15 | 2002-06-05 | 中国科学院金属研究所 | Super thick wall chromium zirconium copper tube for resistance welding holder electrode arm and preparing method |
| CN101327560A (en) * | 2008-07-17 | 2008-12-24 | 东北大学 | Method for producing two-stage type non-joint-cutting crystallizer sheathed tube for soft-contact electromagnetic continuous casting |
| CN102994920A (en) * | 2012-11-26 | 2013-03-27 | 天津大学 | High and low temperature compound resistance reduction treatment method for copper and copper alloy |
| CN103911524A (en) * | 2014-03-21 | 2014-07-09 | 中国科学院金属研究所 | Preparation method of copper rare earth binary intermediate alloy |
Non-Patent Citations (1)
| Title |
|---|
| 中国铸造协会: "《熔模铸造手册》", 30 September 2000 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105983657A (en) * | 2015-02-04 | 2016-10-05 | 河南科丰新材料有限公司 | Method for forming chrome bronze casting through investment casting under vacuum environment |
| CN113084089A (en) * | 2015-02-04 | 2021-07-09 | 河南科丰新材料有限公司 | Method for investment casting of chromium bronze casting under vacuum environment |
| CN111318657A (en) * | 2018-12-14 | 2020-06-23 | 宁波江丰电子材料股份有限公司 | Method for manufacturing titanium target copper-chromium alloy back plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106735003B (en) | A kind of non-vacuum melting horizontal casting production technology of high-strength highly-conductive Cu-Cr-Zr alloy bar materials | |
| CN105463272A (en) | Production method for 5005 aluminum alloy circular ingots | |
| CN103131980B (en) | Method for realizing fine crystal solidification by controlling spherical crystal stabilization | |
| CN103203445A (en) | Preparation method of cast copper cage rotor | |
| CN102343424B (en) | Horizontal continuous casting device and method for high-conductivity and high-strength copper alloy round bar | |
| CN108746562B (en) | Device and method for preparing large composite steel ingot by graphite electrode ring preheating electroslag casting | |
| CN103056624B (en) | Method for producing high-quality forged material by using large-scale vertical type continuous casting round billet, product and application thereof | |
| CN101890492A (en) | Slag for liquid pouring of electroslag | |
| CN102909332B (en) | Device and method for controlling superheat degree of molten steel in continuous casting ladle or tundish | |
| CN103725950B (en) | A kind of Low chrome multielement alloy cast ball production technique | |
| CN112605351B (en) | Method for improving internal quality of cast ingot and heating and heat-insulating box | |
| CN102166632B (en) | Casting method of large-scale steel ingot | |
| CN104498804A (en) | Preparation method of high-temperature alloy and high-temperature alloy thereof | |
| CN104388756B (en) | A kind of nickel-base alloy and preparation method thereof | |
| CN104141065A (en) | Precision casting technique for copper-alloy casting | |
| CN105665657A (en) | Discrete casting method for preparing homogenized cast ingot | |
| CN108660320A (en) | A kind of low-aluminium high titanium-type high temperature alloy electroslag remelting process | |
| CN108296463A (en) | The method for controlling the continuous casting production degree of superheat | |
| CN102719688A (en) | Process method capable of improving thermal fatigue property of polynary zinc-aluminum alloy | |
| CN101456063B (en) | Large-scale thin-wall titanium alloy casting shell pre-heating method forging technique | |
| CN102974794B (en) | Device and method for reducing superheat degree of molten steel of continuous casting ladle or intermediate ladle | |
| CN105344949A (en) | New steel smelting-die casting technology | |
| CN101602103A (en) | The casting method of zinc base alloy for stamping die basal body | |
| CN103409651B (en) | Method for eliminating generation of cold shots or pores on surface of copper-chromium-zirconium alloy rod during vacuum smelting | |
| CN108188369A (en) | A kind of semi-solid rheological molding method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 710077 Shaanxi Province, Xi'an Yanta District fish of the village fish bucket Road No. 273 Applicant after: SHAANXI SIRUI ADVANCED MATERIALS CO., LTD. Address before: 710077 Shaanxi Province, Xi'an Yanta District fish of the village fish bucket Road No. 273 Applicant before: Shaanxi Sirui Industries Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| CB02 | Change of applicant information |
Address after: 710077 high tech Zone, Shaanxi, Xi'an Zhang Road No. 87, No. 12 Applicant after: SHAANXI SIRUI ADVANCED MATERIALS CO., LTD. Address before: 710077 Shaanxi Province, Xi'an Yanta District fish of the village fish bucket Road No. 273 Applicant before: SHAANXI SIRUI ADVANCED MATERIALS CO., LTD. |
|
| COR | Change of bibliographic data | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141112 |
|
| WD01 | Invention patent application deemed withdrawn after publication |