CN111074093A - Copper alloy material for glass mold and preparation method thereof - Google Patents
Copper alloy material for glass mold and preparation method thereof Download PDFInfo
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- CN111074093A CN111074093A CN201911391253.5A CN201911391253A CN111074093A CN 111074093 A CN111074093 A CN 111074093A CN 201911391253 A CN201911391253 A CN 201911391253A CN 111074093 A CN111074093 A CN 111074093A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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- Crystallography & Structural Chemistry (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a copper alloy material for a glass mold, which comprises the following components in percentage by mass: 15.0-16.0% of nickel, 6-6.5% of aluminum, 1.8-2.0% of iron, 7.2-7.8% of zinc, 0.35-0.38% of manganese, 0.35-0.45% of silicon, and the balance of copper and inevitable impurities. The invention discloses a preparation method of a copper alloy material for a glass mold, which comprises the steps of firstly adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after melting the aluminum raw material, adding the rest other raw materials after completely melting furnace burden, smelting, pouring a copper alloy melt into a sand mold, taking out the glass mold from the sand mold after finishing pouring, heating the glass mold to 700-720 ℃, keeping the temperature for 2-3 hours, then air-cooling to room temperature, machining the glass mold, then heating to 675-685 ℃, keeping the temperature for 1-2 hours, and then air-cooling to room temperature. The invention maintains the higher hardness of 200-210 HB and the casting fluidity and the tensile strength of 660-675 MPa of the material while reducing the content of aluminum element in the copper alloy, and meets the casting requirement of a complex glass mold.
Description
Technical Field
The invention relates to a copper alloy material and a preparation method thereof, in particular to a copper alloy material for a glass mold and a preparation method thereof.
Background
In the prior art, the copper alloy material used for glass mold examination generally has high mass percent of Al, generally 8-10%, and the high Al content can improve the alloy hardness on one hand and enable the alloy to have good fluidity to meet the requirement of casting of complex shapes on the other hand. Chinese patent CN103173648A discloses a method for preparing a copper alloy glass die, which comprises the following components in percentage by weight: 14-16% of Ni, 8-9% of Al, 8-10% of Zn, 0.9-1.1% of Si, 0.1-0.2% of Mn, 0.15% of Fe and the balance of Cu and common impurities, wherein the annealing process comprises the following steps: and (3) putting the cast copper alloy blank into a vacuum annealing furnace, quickly raising the temperature to 680 ℃, preserving the temperature for 60 minutes, and then cooling to room temperature along with the furnace. It has excellent heat conducting performance, antioxidant performance and high temperature size stability, and has hardness up to 250 HB. Chinese patent CN102628119A discloses a low-nickel high-iron copper alloy glass mold and a manufacturing method thereof, wherein the mold comprises the following components by weight percent: 4-6% of Ni, 8-10% of Al, 0.05-0.25% of Zn, 0.05-0.2% of Si, 0.8-1.5% of Mn, 4-6% of Fe, and the balance of Cu and common impurities, wherein the heat treatment process is that the heat preservation time is 6 hours, and the temperature is controlled to be 680 ℃; and (4) raising the furnace to room temperature along with the reduction of the furnace temperature to 150 ℃, and taking out. It has excellent antioxidant and heat fatigue resistance and raised toughness. The hardness of the alloy is 175-200 HB due to the reduction of the nickel content. Chinese patent CN106244848A discloses a micro-alloyed nonferrous metal copper-based glass mold material, which comprises the following components in percentage by weight: 15.0-16.5% of nickel, 10.8-11.5% of aluminum, 0.4-0.6% of iron, 1.0-2.0% of cobalt, 0.5-1.5% of zinc, and the balance of copper and inevitable impurities, wherein the annealing treatment process comprises the annealing temperature of 680-690 ℃ and the annealing heat preservation time of 1-1.5 hours. The glass mold material still has the characteristics of high heat dissipation and high hardness of common silicon-nickel-copper alloy materials by adding the cobalt element and reducing the content of the iron element without containing silicon and manganese elements, the hardness is 190-200 HB, and meanwhile, the tensile strength is high.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention provides a copper alloy material for glass molds, which can reduce the Al content while maintaining the material with high hardness and casting fluidity, and meet the requirements of the glass molds. The invention also aims to provide a preparation method of the copper alloy material for the glass mold.
The technical scheme of the invention is as follows: a copper alloy material for a glass mold comprises the following components in percentage by mass: 15.0-16.0% of nickel, 6-6.5% of aluminum, 1.8-2.0% of iron, 7.2-7.8% of zinc, 0.35-0.38% of manganese, 0.35-0.45% of silicon, and the balance of copper and inevitable impurities.
Further, the hardness of the copper alloy material for the glass mold is 200HB to 210HB, and the tensile strength is 660 MPa to 675 MPa.
A preparation method of a copper alloy material for a glass mold comprises the steps of selecting raw materials according to the mass percentage of each component, adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after the aluminum raw material is molten, adding the rest raw materials after furnace burden is completely molten, smelting, pouring copper alloy molten liquid into a sand mold, taking out the glass mold from the sand mold after the pouring is finished, heating the glass mold to 700-720 ℃, preserving heat for 2-3 hours, then air-cooling to room temperature, machining the glass mold, then heating to 675-685 ℃, preserving heat for 1-2 hours, and then air-cooling to room temperature.
Preferably, the temperature during smelting is 1300-1320 ℃.
Preferably, the pouring is heat preservation pouring, and the pouring temperature is 1265-1278 ℃.
Compared with the prior art, the technical scheme provided by the invention has the beneficial effects that:
by adjusting the content of iron, zinc, manganese and silicon elements in the copper alloy and matching with secondary annealing treatment after machining, the high hardness of 200-210 HB and the tensile strength of 660-675 MPa of the material are maintained while the content of the aluminum element in the copper alloy is reduced. The alloy material can have good casting fluidity at a lower casting temperature, so that the problem that the casting is easy to generate pores or carry impurities when a complex shape is cast because the casting temperature needs to be increased to obtain the good fluidity is avoided, and the casting requirement of a complex glass mold is met.
Detailed Description
The present invention is further illustrated by the following examples, which are not to be construed as limiting the invention thereto.
Example 1
The copper alloy material for the glass mold is prepared according to the following steps:
selecting raw materials according to the mass percent of each component, wherein the components in mass percent comprise 15.6 percent of nickel, 6.5 percent of aluminum, 1.8 percent of iron, 7.5 percent of zinc, 0.35 percent of manganese, 0.35 percent of silicon, and the balance of copper and inevitable impurities; firstly, adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after the aluminum raw material is molten, adding the rest other raw materials after furnace burden is completely molten, and smelting at the smelting temperature of 1320 ℃; pouring the copper alloy melt into a sand mold, keeping the pouring temperature at 1265 ℃, taking out the glass mold from the sand mold after pouring, heating the glass mold to 720 ℃, keeping the temperature for 2 hours, then cooling to room temperature, machining the glass mold, then heating to 680 ℃, keeping the temperature for 1.5 hours, and then cooling to room temperature.
Example 2
The copper alloy material for the glass mold is prepared according to the following steps:
selecting raw materials according to the mass percent of each component, wherein the components in mass percent comprise 15.2 percent of nickel, 6.3 percent of aluminum, 1.9 percent of iron, 7.6 percent of zinc, 0.38 percent of manganese, 0.4 percent of silicon, and the balance of copper and inevitable impurities; firstly, adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after the aluminum raw material is molten, adding the rest other raw materials after furnace burden is completely molten, and smelting at the smelting temperature of 1300 ℃; pouring the copper alloy melt into a sand mold, keeping the pouring temperature at 1268 ℃, taking out the glass mold from the sand mold after pouring, heating the glass mold to 700 ℃, keeping the temperature for 3 hours, then cooling to room temperature, machining the glass mold, then heating to 675 ℃, keeping the temperature for 2 hours, and then cooling to room temperature.
Example 3
The copper alloy material for the glass mold is prepared according to the following steps:
selecting raw materials according to the mass percent of each component, wherein the components in mass percent comprise 15.0 percent of nickel, 6.3 percent of aluminum, 1.9 percent of iron, 7.8 percent of zinc, 0.36 percent of manganese, 0.38 percent of silicon, and the balance of copper and inevitable impurities; firstly, adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after the aluminum raw material is molten, adding the rest other raw materials after furnace burden is completely molten, and smelting at the smelting temperature of 1310 ℃; pouring the copper alloy melt into a sand mold, keeping the pouring temperature at 1272 ℃, taking out the glass mold from the sand mold after pouring, heating the glass mold to 710 ℃, keeping the temperature for 3 hours, then cooling to room temperature, machining the glass mold, then heating to 680 ℃, keeping the temperature for 2 hours, and then cooling to room temperature.
Example 4
The copper alloy material for the glass mold is prepared according to the following steps:
selecting raw materials according to the mass percent of each component, wherein the components in mass percent comprise 16.0 percent of nickel, 6.0 percent of aluminum, 2.0 percent of iron, 7.2 percent of zinc, 0.35 percent of manganese, 0.42 percent of silicon, and the balance of copper and inevitable impurities; firstly, adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after the aluminum raw material is molten, adding the rest other raw materials after furnace burden is completely molten, and smelting at the smelting temperature of 1320 ℃; pouring the copper alloy melt into a sand mold, keeping the pouring temperature at 1278 ℃, taking out the glass mold from the sand mold after pouring, heating the glass mold to 710 ℃, keeping the temperature for 2.5 hours, then cooling to room temperature, machining the glass mold, heating to 685 ℃ again, keeping the temperature for 1 hour, and then cooling to room temperature.
Example 5
The copper alloy material for the glass mold is prepared according to the following steps:
selecting raw materials according to the mass percent of each component, wherein the components in mass percent comprise 15.9 percent of nickel, 6.2 percent of aluminum, 1.9 percent of iron, 7.2 percent of zinc, 0.38 percent of manganese, 0.45 percent of silicon, and the balance of copper and inevitable impurities; firstly, adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after the aluminum raw material is molten, adding the rest other raw materials after furnace burden is completely molten, and smelting at the smelting temperature of 1320 ℃; pouring the copper alloy melt into a sand mold, keeping the pouring temperature at 1270 ℃, taking out the glass mold from the sand mold after pouring, heating the glass mold to 720 ℃, keeping the temperature for 2 hours, then cooling to room temperature, machining the glass mold, then heating to 675 ℃, keeping the temperature for 1.5 hours, and then cooling to room temperature.
Example 6
The copper alloy material for the glass mold is prepared according to the following steps:
selecting raw materials according to the mass percent of each component, wherein the components in mass percent comprise 16.0 percent of nickel, 6.5 percent of aluminum, 1.8 percent of iron, 7.5 percent of zinc, 0.36 percent of manganese, 0.38 percent of silicon, and the balance of copper and inevitable impurities; firstly, adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after the aluminum raw material is molten, adding the rest other raw materials after furnace burden is completely molten, and smelting at the smelting temperature of 1320 ℃; pouring the copper alloy melt into a sand mold, keeping the pouring temperature at 1270 ℃, taking out the glass mold from the sand mold after pouring, heating the glass mold to 700 ℃, keeping the temperature for 3 hours, then cooling to room temperature, machining the glass mold, then heating to 685 ℃, keeping the temperature for 1.5 hours, and then cooling to room temperature.
Comparative example 1
Selecting raw materials according to the mass percent of each component, wherein the components in mass percent comprise 15.6 percent of nickel, 6.5 percent of aluminum, 1.6 percent of iron, 7.5 percent of zinc, 0.42 percent of manganese, 0.35 percent of silicon, and the balance of copper and inevitable impurities; firstly, adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after the aluminum raw material is molten, adding the rest other raw materials after furnace burden is completely molten, and smelting at the smelting temperature of 1320 ℃; pouring the copper alloy melt into a sand mold, keeping the pouring temperature at 1265 ℃, taking out the glass mold from the sand mold after pouring, heating the glass mold to 720 ℃, keeping the temperature for 2 hours, then cooling to room temperature, machining the glass mold, then heating to 680 ℃, keeping the temperature for 1.5 hours, and then cooling to room temperature.
Comparative example 2
Selecting raw materials according to the mass percent of each component, wherein the components in mass percent comprise 15.6 percent of nickel, 6.5 percent of aluminum, 1.8 percent of iron, 7.5 percent of zinc, 0.35 percent of manganese, 0.35 percent of silicon, and the balance of copper and inevitable impurities; firstly, adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after the aluminum raw material is molten, adding the rest other raw materials after furnace burden is completely molten, and smelting at the smelting temperature of 1320 ℃; pouring the copper alloy melt into a sand mold, keeping the pouring temperature at 1265 ℃, taking out the glass mold from the sand mold after pouring, heating the glass mold to 720 ℃, keeping the temperature for 2 hours, then cooling to room temperature in an air cooling mode, and machining the glass mold.
Comparative example 3
Selecting raw materials according to the mass percent of each component, wherein the components in mass percent comprise 15.6 percent of nickel, 6.5 percent of aluminum, 2.5 percent of iron, 7.5 percent of zinc, 0.3 percent of manganese, 0.35 percent of silicon, and the balance of copper and inevitable impurities; firstly, adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after the aluminum raw material is molten, adding the rest other raw materials after furnace burden is completely molten, and smelting at the smelting temperature of 1320 ℃; pouring the copper alloy melt into a sand mold, keeping the pouring temperature at 1265 ℃, taking out the glass mold from the sand mold after pouring, heating the glass mold to 720 ℃, keeping the temperature for 2 hours, then cooling to room temperature, machining the glass mold, then heating to 680 ℃, keeping the temperature for 1.5 hours, and then cooling to room temperature.
Comparative example 4
Selecting raw materials according to the mass percent of each component, wherein the components in mass percent comprise 15.6 percent of nickel, 6.5 percent of aluminum, 2.5 percent of iron, 7.5 percent of zinc, 0.45 percent of manganese, 0.30 percent of silicon, and the balance of copper and inevitable impurities; firstly, adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after the aluminum raw material is molten, adding the rest other raw materials after furnace burden is completely molten, and smelting at the smelting temperature of 1320 ℃; pouring the copper alloy melt into a sand mold, keeping the pouring temperature at 1265 ℃, taking out the glass mold from the sand mold after pouring, heating the glass mold to 720 ℃, keeping the temperature for 2 hours, then cooling to room temperature, machining the glass mold, then heating to 680 ℃, keeping the temperature for 1.5 hours, and then cooling to room temperature.
Comparative example 5
Selecting raw materials according to the mass percent of each component, wherein the components in mass percent comprise 15.6 percent of nickel, 6.5 percent of aluminum, 1.6 percent of iron, 6.5 percent of zinc, 0.42 percent of manganese, 0.35 percent of silicon, and the balance of copper and inevitable impurities; firstly, adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after the aluminum raw material is molten, adding the rest other raw materials after furnace burden is completely molten, and smelting at the smelting temperature of 1320 ℃; pouring the copper alloy melt into a sand mold, keeping the pouring temperature at 1285 ℃, taking out the glass mold from the sand mold after pouring, heating the glass mold to 720 ℃, keeping the temperature for 2 hours, then cooling to room temperature, machining the glass mold, then heating to 680 ℃, keeping the temperature for 1.5 hours, and then cooling to room temperature.
Comparative example 6
Selecting raw materials according to the mass percent of each component, wherein the components in mass percent comprise 15.0 percent of nickel, 6.3 percent of aluminum, 1.9 percent of iron, 7.8 percent of zinc, 0.36 percent of manganese, 0.45 percent of silicon, and the balance of copper and inevitable impurities; firstly, adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after the aluminum raw material is molten, adding the rest other raw materials after furnace burden is completely molten, and smelting at the smelting temperature of 1310 ℃; pouring the copper alloy melt into a sand mold, keeping the pouring temperature at 1272 ℃, taking out the glass mold from the sand mold after pouring, heating the glass mold to 710 ℃, keeping the temperature for 3 hours, then cooling to room temperature, machining the glass mold, then heating to 680 ℃, keeping the temperature for 2 hours, and then cooling to room temperature.
The properties of the mold materials obtained in the above examples and comparative examples are as follows
Claims (5)
1. A copper alloy material for glass mold is characterized in that: the composite material comprises the following components in percentage by mass: 15.0-16.0% of nickel, 6-6.5% of aluminum, 1.8-2.0% of iron, 7.2-7.8% of zinc, 0.35-0.38% of manganese, 0.35-0.45% of silicon, and the balance of copper and inevitable impurities.
2. The copper alloy material for glass molds according to claim 1, characterized in that: the hardness of the copper alloy material is 200-210 HB, and the tensile strength is 660-675 MPa.
3. The preparation method of the copper alloy material for the glass mold is characterized by selecting the following raw materials in percentage by mass: 15.0-16.0% of nickel, 6-6.5% of aluminum, 1.8-2.0% of iron, 7.2-7.8% of zinc, 0.35-0.38% of manganese, 0.35-0.45% of silicon and the balance of copper and inevitable impurities, firstly adding an aluminum raw material into an intermediate frequency furnace, adding a nickel raw material after the aluminum raw material is melted, adding the rest other raw materials after furnace charge is completely melted, smelting, pouring copper alloy melt into a sand mold, taking out the glass mold from the sand mold after the pouring is finished, heating the glass mold to 700-720 ℃, keeping the temperature for 2-3 hours, then air-cooling to room temperature, machining the glass mold, then heating to 675-685 ℃, keeping the temperature for 1-2 hours, and then air-cooling to room temperature.
4. The method for producing a copper alloy material for a glass mold as defined in claim 1, wherein: the temperature during smelting is 1300-1320 ℃.
5. The method for producing a copper alloy material for a glass mold as defined in claim 1, wherein: the pouring is heat preservation pouring, and the pouring temperature is 1265-1278 ℃.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5987926A (en) * | 1997-05-23 | 1999-11-23 | Saint-Gobain Emballage | Mold made of cuproaluminum alloy for the manufacture of glass products |
| WO2017175251A1 (en) * | 2016-04-05 | 2017-10-12 | Fonderie Bartalesi S.R.L. | Copper alloy |
| CN107475561A (en) * | 2017-07-17 | 2017-12-15 | 常熟市金诺精工模具有限公司 | High ferro acid bronze alloy glass mold material and preparation method thereof |
| CN108085537A (en) * | 2017-12-19 | 2018-05-29 | 常熟市伟恒模具铸造有限公司 | The copper alloy glass mold production method of control molding facial disfigurement |
| CN109338154A (en) * | 2018-11-02 | 2019-02-15 | 常熟市金诺精工模具有限公司 | The heat treatment process of acid bronze alloy glass mold material |
-
2019
- 2019-12-30 CN CN201911391253.5A patent/CN111074093A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5987926A (en) * | 1997-05-23 | 1999-11-23 | Saint-Gobain Emballage | Mold made of cuproaluminum alloy for the manufacture of glass products |
| WO2017175251A1 (en) * | 2016-04-05 | 2017-10-12 | Fonderie Bartalesi S.R.L. | Copper alloy |
| CN107475561A (en) * | 2017-07-17 | 2017-12-15 | 常熟市金诺精工模具有限公司 | High ferro acid bronze alloy glass mold material and preparation method thereof |
| CN108085537A (en) * | 2017-12-19 | 2018-05-29 | 常熟市伟恒模具铸造有限公司 | The copper alloy glass mold production method of control molding facial disfigurement |
| CN109338154A (en) * | 2018-11-02 | 2019-02-15 | 常熟市金诺精工模具有限公司 | The heat treatment process of acid bronze alloy glass mold material |
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