A kind of preparation method of beryllium copper casting roll sleeve and beryllium copper casting roll sleeve

A technology of casting rolls and beryllium copper, applied in the field of non-ferrous metal materials, can solve the problems of large grain size, coarse grains, poor thermal conductivity of casting rolls, etc., and achieve the effects of improving service life, improving uniformity and uniform cooling

Active Publication Date: 2021-06-22
宁夏中色新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing roll sleeves are mainly copper roll sleeves, and the main component is low beryllium alloy. The production process mainly includes alloy melting, casting, forging, heat treatment and machining. The hardness of low beryllium alloy is low, and it is easy to cause grain boundaries during heating. Oxidation and coarse grains lead to large grain size; when the strength, hardness and grain size of the copper roller sleeve are guaranteed by increasing the beryllium content, its electrical conductivity cannot be satisfied, and the thermal conductivity of the casting roll is poor during use, which affects the casting. Surface quality of rolled products (amorphous strip)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1. Use electrolytic copper, copper-beryllium master alloy (containing 2.5% beryllium), electrolytic nickel, electrolytic cobalt, metal magnesium, metal silicon, etc. as raw materials. With 2.0% metal beryllium (616kg copper beryllium master alloy), 0.1% metal nickel (0.7kg electrolytic nickel), 0.25% metal cobalt (1.75kg electrolytic cobalt), 0.05% metal magnesium (0.35kg metal magnesium), 0.08% silicon ( Metal silicon), 0.02% iron (0.14kg metal iron), 0.03% aluminum (0.21kg metal aluminum), and the balance is electrolytic copper, and batching is carried out, a total of 700kg. 2. Melting and casting: After drying the raw materials into the furnace, put them into a vacuum induction furnace for melting, control the melting temperature at 1310°C, and then cast them into ingots at a temperature of 1260°C, the size of the ingots

[0043] 3. Homogenization treatment: heat the ingot at 800°C for 12 hours for homogenization treatment.

[0044] 4. Surface turning, dimension a...

Embodiment 2

[0054] 1. Use copper-beryllium master alloy (containing 8% beryllium), electrolytic nickel, electrolytic cobalt, metal magnesium, metal silicon and electrolytic copper as raw materials. With 0.4% beryllium (300kg copper beryllium master alloy), 0.9% metallic nickel (54kg electrolytic nickel), 0.1% metallic cobalt (6kg electrolytic cobalt), 0.1% metallic magnesium (6kg metallic magnesium), 0.02% silicon (1.2kg metallic silicon ), 0.03% iron (1.8kg metal iron), 0.02% aluminum (1.2kg metal aluminum), and the balance is electrolytic copper, and batching is carried out, a total of 6000kg.

[0055] 2. Melting and casting: After drying the raw materials into the furnace, put them into a vacuum induction furnace for melting, control the melting temperature at 1280°C, and then cast them into ingots at a temperature of 1240°C.

[0056] 3. Homogenization treatment: heat the ingot at 780°C for 20 hours for homogenization treatment.

[0057] 4. Surface turning, dimension after turning ...

Embodiment 3

[0067] 1. Use copper-beryllium master alloy (containing 3.8% beryllium), electrolytic nickel, electrolytic cobalt, metal magnesium, metal silicon and electrolytic copper as raw materials. With 1.0% beryllium (1580kg copper beryllium master alloy), 0.6% metallic nickel (36kg electrolytic nickel), 0.2% metallic cobalt (12kg electrolytic cobalt), 0.08% metallic magnesium (4.8kg metallic magnesium), 0.1% silicon (6kg metallic silicon ), 0.04% iron (2.4kg metal iron), 0.04% aluminum (2.4kg metal aluminum), and the balance is electrolytic copper for batching, a total of 6000kg.

[0068] 2. Melting and casting: After drying the raw materials into the furnace, put them into a vacuum induction furnace for melting, control the melting temperature at 1290°C, and then cast them into ingots at a temperature of 1280°C, the size of the ingots

[0069] 3. Homogenization treatment: the ingot is kept at 790°C for 16 hours for homogenization treatment. In order to ensure the uniformity of the...

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PUM

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Abstract

The invention discloses a method for preparing a beryllium-copper casting roll sleeve, comprising: step 1, preparing raw materials; step 2, melting metal copper, metal nickel and metal cobalt, and then sequentially melting copper-beryllium master alloy, silicon, metal magnesium, and metal iron Melting and casting followed by metal aluminum; Step 3, homogenizing the ingot; Step 4, adopting a direction of 45° with the axial direction of the ingot, forging the homogenized ingot and sequentially Punching, reaming, ring rolling, heat treatment and machining. The invention also discloses a beryllium copper casting roll sleeve. The invention not only ensures the strength requirements of the beryllium copper casting roll sleeve, but also improves the hardness, conductivity and grain size of the beryllium copper casting roll sleeve, and can significantly improve the service life of the beryllium copper casting roll sleeve.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal materials, and relates to a preparation method of a beryllium copper cast roll sleeve and a beryllium copper cast roll sleeve. Background technique [0002] During the casting and rolling process, since the temperature of molten steel can reach 1400-1550°C, the roll sleeve not only has to bear the influence of harsh working conditions such as bending stress, torsional stress, surface friction force and periodic thermal shock force, but also requires the roll sleeve to have High strength, high hardness, good thermal conductivity, electrical conductivity, low linear expansion coefficient and small elastic modulus, good high temperature resistance, thermal fatigue resistance and thermal deformation resistance and other properties. [0003] The existing roll sleeves are mainly copper roll sleeves, and the main component is low beryllium alloy. The production process mainly includes alloy mel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C9/00C22C9/06B22D11/06B23P15/00
CPCB22D11/0648B23P15/00C22C1/03C22C9/00C22C9/06
Inventor 岳丽娟张勇杨武李永华崔军宏王炳正韩俊钢焦晓亮
Owner 宁夏中色新材料有限公司
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