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Cold rolling method for tungsten-copper alloy sheet

A technology of tungsten-copper alloy and thin plate, which is applied in the field of cold rolling of tungsten-copper alloy thin plate, can solve the problems of cracking and scrapping, large processing site, low yield rate, etc., and achieve the elimination of incongruous plastic deformation, short production cycle and small occupied space Effect

Active Publication Date: 2010-10-20
上海六晶科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to overcome the long production cycle of tungsten-copper alloy sheets in the prior art, high energy consumption, low yield, easy cracking and scrapping during high-temperature processing, and large investment in equipment, relatively large types and quantities. Many, most of them are high-power and large-tonnage processing equipment, which require a large processing site and other defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A cold-rolling method for a tungsten-copper alloy sheet, comprising the following steps: performing 10-15 passes of cold-rolling on a tungsten-copper alloy sheet with a thickness of 1.5 mm to obtain a tungsten-copper alloy sheet with a thickness of 0.9 mm; wherein, the The reduction of the multi-pass cold rolling process described above is 0.05mm; the rolling pressure is 30MPa; the rolling speed is 0.05m / s.

[0040] Wherein, the tungsten-copper alloy thin plate of described 1.5mm thickness is made by following method: 1.9mm thick tungsten-copper alloy thin plate green body (tungsten 80wt%, copper 20wt%, commercially available, following embodiment is the same as this Place), in a hydrogen protective atmosphere, carry out continuous boat-pushing liquid-phase sintering in a high-temperature furnace, wherein the boat-pushing speed is 0.15 cm / min; the sintering temperature is 1450 ° C; the holding time is 2.5 hours.

[0041] After calculation, the relative density of the pr...

Embodiment 2

[0043] A cold-rolling method for a tungsten-copper alloy sheet, comprising the following steps: performing 9 to 13 passes of cold-rolling on a tungsten-copper alloy sheet with a thickness of 1.1 mm to obtain a tungsten-copper alloy sheet with a thickness of 0.8 mm; wherein, the The reduction in the multi-pass cold rolling process described above is 0.03mm; the rolling pressure is 20MPa; the rolling speed is 0.08m / s.

[0044] Wherein, the tungsten-copper alloy thin plate with a thickness of 1.1mm is obtained by the following method: the green body of a tungsten-copper alloy thin plate with a thickness of 1.4mm is carried out in a hydrogen protective atmosphere in a high-temperature furnace for continuous boat-pushing liquid phase sintering, Among them, the speed of pushing the boat is 0.3 cm / min; the sintering temperature is 1400° C.; the holding time is 2 hours.

[0045] After calculation, the relative density of the product prepared in this embodiment reaches 99.5%, the first...

Embodiment 3

[0047] A cold-rolling method for a tungsten-copper alloy sheet, comprising the following steps: performing 12-16 passes of cold-rolling on a tungsten-copper alloy sheet with a thickness of 1.9 mm to obtain a tungsten-copper alloy sheet with a thickness of 1.0 mm; wherein, the The reduction of the multi-pass cold rolling process described above is 0.08mm; the rolling pressure is 60MPa; the rolling speed is 0.03m / s.

[0048] Wherein, the tungsten-copper alloy thin plate with a thickness of 1.9mm is obtained by the following method: the green body of a tungsten-copper alloy thin plate with a thickness of 2.4mm is carried out in a hydrogen protective atmosphere in a high-temperature furnace for continuous boat-pushing liquid phase sintering, Among them, the speed of pushing the boat is 0.15 cm / min; the sintering temperature is 1450° C.; the holding time is 2.5 hours.

[0049] After calculation, the relative density of the product prepared in this embodiment reaches 99.5%, the firs...

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Abstract

The invention discloses a cold rolling method for a tungsten-copper alloy sheet, which comprises the following steps: conducting multi-process cold rolling processing to the tungsten-copper alloy sheet with thickness of 0.4mm-2.0mm to obtain the tungsten-copper alloy sheet with thickness of 0.1mm-1.5mm, wherein the rolling reduction of the multi-process cold rolling processing is 0.01mm-0.2mm; the rolling pressure is 0.1MPa-100MPa; and the rolling speed is 0.01m / s-0.1m / s. The invention has the advantages that the method can obviously improve the cold processing plasticity of tungsten-copper alloy, the continuous production cycle is short, the energy consumption is low, the production efficiency is high, the equipment investment is small, the occupied field is small and the method is suitable for mass industrialized production.

Description

technical field [0001] The invention relates to a cold rolling method of a tungsten-copper alloy thin plate. Background technique [0002] Tungsten-copper alloy materials not only have the characteristics of high strength, high hardness, and low expansion coefficient of tungsten, but also have the characteristics of high plasticity, good electrical conductivity and thermal conductivity of copper. In large-scale integrated circuits and high-power microwave devices, tungsten Copper alloy materials have been rapidly developed as substrates, inserts, connectors and heat dissipation components. However, when tungsten-copper alloy is used as an electronic packaging material, the density must be greater than 98% of the theoretical density to ensure high thermal conductivity. Therefore, improving the density of tungsten-copper alloy is the key to ensure the performance of tungsten-copper alloy material. [0003] The existing main technologies for processing tungsten-copper alloy ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/22B21B37/46B21B37/56B21B37/58
Inventor 李建朱玉斌
Owner 上海六晶科技股份有限公司
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