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Copper alloy for manufacturing mould and preparation method thereof

A technology for manufacturing molds and copper alloys, which is applied in the field of multi-component low-beryllium copper alloys, copper alloys for manufacturing molds and its preparation, can solve problems such as environmental pollution, personal hazards, and high production costs, and achieve reduced environmental pollution, easy processing and molding, The effect of high yield

Inactive Publication Date: 2010-05-12
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the domestic mold materials used in this industry are generally beryllium bronze alloys with excellent comprehensive properties. The main brands are: C17500, C17200, etc. These copper alloys contain relatively high amounts of beryllium or cobalt elements, which makes the production cost of materials very high. The high beryllium element will cause environmental pollution and personal harm in the alloy production process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The alloy composition is (wt%) Ni: 1.30, Co: 0.30, Be: 0.30, Zr: 0.15, Y: 0.02, Ce: 0.05, the balance is Cu, and the sum of the mass of each component is 100%.

[0028] The preparation method is as follows: smelting in a medium-frequency induction furnace, casting an ingot with an iron mold; forging at a temperature range of 920°C to 720°C, with a deformation of 45%; solid solution treatment at 950°C, and then quenching treatment, the quenching water temperature is 25°C; Forging treatment, the deformation amount is 30%; the blank after cold forging is subjected to aging treatment at 460°C and cooled in air.

[0029] After the above preparation, the performance indicators of the copper alloy obtained are: tensile strength is 725Mpa, yield strength is 590Mpa, hardness is 237HB, elongation is 22%, electrical conductivity is 60% IACS, and conductivity is 245W / m·K , The softening temperature is 610°C.

Embodiment 2

[0031] The alloy composition is (wt%) Ni: 1.10, Co: 0.40, Be: 0.10, Zr: 0.20, Y: 0.10, Ce: 0.02, the balance is Cu, and the sum of the mass of each component is 100%.

[0032] The preparation method is as follows: smelting in a medium-frequency induction furnace, casting an ingot with an iron mold; forging at a temperature range of 920°C to 720°C, with a deformation of 55%; solid solution treatment at 940°C, and then quenching treatment, the quenching water temperature is 25°C; Forging treatment, the deformation amount is 40%; the blank after cold forging is subjected to aging treatment at 470°C and cooled in air.

[0033] After the above preparation, the performance index of the copper alloy obtained is: the tensile strength is 720Mpa, the yield strength is 593Mpa, the hardness is 235HB, the elongation is 20%, the conductivity is 62% IACS, and the conductivity is 248W / m·K , The softening temperature is 570°C.

Embodiment 3

[0035] The alloy composition is (wt%) Ni: 1.70, Co: 0.20, Be: 0.40, Zr: 0.08, Y: 0.08, Ce: 0.04, the balance is Cu, and the sum of the mass of each component is 100%.

[0036] The preparation method is as follows: smelting in a medium-frequency induction furnace, casting an ingot with an iron mold; forging at a temperature range of 920°C to 720°C, with a deformation of 50%; solid solution treatment at 960°C, and then quenching treatment, the quenching water temperature is 25°C; Forging treatment, the deformation amount is 20%; the cold forged billet is subjected to aging treatment at 450°C and cooled in air.

[0037] After the above preparation, the performance indicators of the copper alloy obtained are: tensile strength is 738Mpa, yield strength is 601Mpa, hardness is 241HB, elongation is 15%, electrical conductivity is 55% IACS, and conductivity is 230W / m·K , The softening temperature is 550°C.

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Abstract

The invention discloses copper alloy for manufacturing a mould and a preparation method thereof. The copper alloy consists of the following components in percentage by mass: 1.10 to 1.70 percent of Ni, 0.20 to 0.40 percent of Co, 0.10 to 0.40 percent of Be, 0.08 to 0.20 percent of Zr, 0.02 to 0.10 percent of Y, 0.02 to 0.05 percent of Ce, and the balance of Cu; and the copper alloy is prepared by processing steps of melting, pouring, hot forging, solid solution, cold forging and ageing. The copper alloy for manufacturing the mould has the characteristics of high strength and high thermal conductivity, and can also be used for welded joint discs and the like used on spot-welding electrodes and stainless steel besides being used for manufacturing injection moulds and nonferrous metal low-pressure die casting moulds with high thermal conductivity.

Description

technical field [0001] The invention belongs to the technical field of copper alloy materials, and relates to a multi-element low-beryllium copper alloy, and more specifically relates to a copper alloy used for manufacturing molds and a preparation method thereof. Background technique [0002] Cavity inserts, cores, heat dissipation components of injection molds, low-pressure die-casting molds of copper alloys and aluminum alloys require mold materials with high strength, hardness, heat transfer and heat dissipation performance, and high temperature resistance. At present, the domestic mold materials used in this industry are generally beryllium bronze alloys with excellent comprehensive properties. The main brands are: C17500, C17200, etc. These copper alloys contain relatively high amounts of beryllium or cobalt elements, which makes the production cost of materials very high. The high beryllium element will cause environmental pollution and personal harm in the alloy prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22F1/08
Inventor 孙爱俊李学浩迟永强孙景明陈大龙王炜
Owner JIANGSU UNIV OF SCI & TECH
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