WO2018121314A1 - 一种非晶态合金整形方法 - Google Patents
一种非晶态合金整形方法 Download PDFInfo
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- WO2018121314A1 WO2018121314A1 PCT/CN2017/116799 CN2017116799W WO2018121314A1 WO 2018121314 A1 WO2018121314 A1 WO 2018121314A1 CN 2017116799 W CN2017116799 W CN 2017116799W WO 2018121314 A1 WO2018121314 A1 WO 2018121314A1
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- amorphous alloy
- casting
- amorphous
- temperature
- mold
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
Definitions
- the invention relates to an amorphous alloy shaping method, in particular to a shaping method for improving the dimensional accuracy of an amorphous alloy product.
- Amorphous alloys are widely used in mechanical parts due to their unique structure, long-range disorder and short-range disorder, and many excellent mechanical properties, such as high strength and hardness.
- large amorphous alloys have been obtained in more than ten kinds of systems such as Zr-based, La-based, Mg-based, Fe-based, Cu-based, Ni-based, and rare-earth based, among which Zr-based amorphous alloys are strong.
- the amorphous forming ability and excellent mechanical properties have attracted much attention and have been widely used.
- the molding technology of the amorphous alloy mostly adopts a pressure casting molding process to perform near-end molding, and the process has the advantages of high production efficiency, and is easy to produce high-precision and complicated product parts.
- the amorphous alloy due to the poor compactness of the surface of the amorphous alloy casting prepared by the casting process, the amorphous alloy has the characteristics of high strength and high hardness, so that it is difficult to cut the amorphous alloy casting product once it is formed. , surface polishing and the like, so it is difficult to obtain a high surface quality amorphous alloy product in the prior art.
- the technical problem to be solved by the present invention is that the amorphous alloy casting has the problem of poor dimensional accuracy in the prior art, and the invention provides a shaping method for improving the dimensional accuracy of the amorphous alloy product, which can solve the dimensional accuracy of the amorphous alloy casting. Problem with amorphous alloy shaping methods.
- the technical solution for realizing the invention is: an amorphous alloy shaping method, comprising the following steps:
- the amorphous alloy casting with casting allowance is placed in the finishing mold, and the temperature T of the amorphous alloy casting is raised to: Tg by using the overall heating instantaneous temperature rising method. ⁇ T ⁇ Tx, where Tg is an amorphous transition temperature and Tx is a crystallization temperature;
- the amorphous alloy casting to be cast is cast into a casting blank having a machining allowance of 0.1 to 1 mm before the step (1).
- the vacuum condition of the above vacuum condition is less than 10 -3 atmospheres.
- the above-described overall heating instantaneous temperature rising method is high frequency induction heating or hydraulic oil heating.
- the thermal conductivity of the above mold is not less than 20 W/M ⁇ K.
- the above mold is a copper mold.
- the above mold is a copper alloy mold.
- the above instantaneous cooling time is 1-2S.
- the invention provides a shaping method for improving the dimensional accuracy of an amorphous alloy product, and an amorphous alloy shaping method capable of solving the problem of poor dimensional accuracy of an amorphous alloy casting.
- the amorphous alloy shaping method of the invention can realize the structure that the original casting process is not easy to realize, and can only rely on the CNC, such as a small hole having a size of less than 1 mm, an inverted structure or a side structure.
- the amorphous alloy shaping method of the invention can ensure that the amorphous alloy casting having the machining allowance can be cast by a multi-cavity method during the casting process, and the amorphous alloy shaping method provided by the invention is utilized. Shaping and finishing to obtain the final size of the casting.
- the amorphous alloy shaping method of the invention can effectively increase the density of the surface of the casting and reduce casting defects.
- Embodiment 1 is a schematic view showing the surface shape of a casting of Embodiment 1 of an amorphous alloy shaping method of the present invention
- Embodiment 2 is a schematic view showing the shape of a casting of Embodiment 2 of an amorphous alloy shaping method of the present invention
- Figure 3 is a schematic view showing the shape of a casting obtained in the step (1) of Embodiment 2 of the amorphous alloy shaping method of the present invention.
- the amorphous alloy is exemplified by a zirconium-based amorphous alloy Zr 52.5 Cu 18 Ni 14.5 Ti 5 Al 10 .
- the target casting has a shape of 30*30*3, and the sheet has 100 uniformly distributed concave holes on one surface thereof, and has a diameter of 0.80 ⁇ 0.01 mm and a depth of 0.4 ⁇ 0.01 mm, as shown in FIG.
- An amorphous alloy shaping method includes the following steps:
- step (2) placing the amorphous alloy casting cast in step (1) into a copper alloy finishing mold under a vacuum condition of a vacuum degree of less than 10 -3 atmospheres, and using an high frequency induction heating method to mold the amorphous alloy.
- the temperature T is raised to: Tg ⁇ T ⁇ Tx, wherein Tg is an amorphous transition temperature, and Tx is a crystallization temperature;
- the sheet having a shape of 30*30*3 was directly cast using a copper alloy finishing die having 100 uniformly distributed recessed holes on one surface having a diameter of 0.80 ⁇ 0.01 mm and a depth of 0.4 ⁇ 0.01 mm.
- a casting of the final size was obtained, with 100 uniformly distributed holes having a diameter of 0.80 ⁇ 0.03 mm on the surface of the casting, wherein the depth of the recess was 0.4 ⁇ 0.03 mm.
- the shape of the target casting is as shown in Fig. 2, which is a bulk amorphous alloy.
- the amorphous alloy has a groove 3, and the upper side wall of the groove 3 has an inverted structure 1 having a height H of 1 ⁇ 0.01 mm.
- An amorphous alloy shaping method includes the following steps:
- the amorphous alloy casting with casting allowance is placed in the copper finishing mold, and the temperature of the amorphous alloy casting is raised to Tg ⁇ T by using hydraulic oil heating.
- Tg is an amorphous transition temperature
- Tx is a crystallization temperature
- the height H of the inverted buckle structure 1 is 1 ⁇ 0.01 mm.
- the shape of the target casting is as shown in Fig. 2, which is a bulk amorphous alloy.
- the amorphous alloy has a groove 3, and the upper side wall of the groove 3 has an inverted structure 1 having a height H of 1 ⁇ 0.01 mm.
- the undercut structure 1 cannot be obtained by directly using a copper alloy finishing die casting.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
Claims (7)
- 一种非晶态合金整形方法,其特征在于包括如下步骤:(1)在惰性气体保护或真空条件下,将铸造成型具有加工余量的非晶合金铸件置入精加工模具中,使用整体加热瞬间升温方法,将非晶合金铸件温度T升高至:Tg<T<Tx,其中Tg为非晶转变温度,Tx为晶化温度;(2)停止加热,并使用精加工模具冷压,使非晶合金铸件的温度瞬间冷却至非晶合金非晶转变温度以下,获得最终尺寸的铸件。
- 根据权利要求1所述的一种非晶态合金整形方法,其特征在于:所述真空条件的真空度小于10 -3个大气压。
- 根据权利要求1所述的一种非晶态合金整形方法,其特征在于:所述整体加热瞬间升温方法为高频感应加热或液压油加热。
- 根据权利要求1所述的一种非晶态合金整形方法,其特征在于:所述模具的热导率不小于20W/M·K。
- 根据权利要求1所述的一种非晶态合金整形方法,其特征在于:所述模具为铜模具。
- 根据权利要求5所述的一种非晶态合金整形方法,其特征在于:所述模具为铜合金模具。
- 根据权利要求1所述的一种非晶态合金整形方法,其特征在于:所述瞬间冷却时间为1-2S。
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CN201611254456.6A CN106584012B (zh) | 2016-12-30 | 2016-12-30 | 一种非晶态合金整形方法 |
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CN106584012B (zh) * | 2016-12-30 | 2019-07-12 | 常州世竟液态金属有限公司 | 一种非晶态合金整形方法 |
CN110722019B (zh) * | 2019-09-05 | 2021-01-19 | 东莞市逸昊金属材料科技有限公司 | 一种用于锆基非晶薄壁件平面度整平方法 |
CN115283484A (zh) * | 2022-07-28 | 2022-11-04 | 盘星新型合金材料(常州)有限公司 | 非晶转轴用变形整形治具及变形整形方法、应用 |
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