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Mandril for copper alloy pipe planetary rolling mill and manufacturing method thereof

A planetary rolling mill, copper alloy technology, applied in metal rolling, metal rolling, manufacturing tools, etc., can solve the problems of low yield, short service life, difficult mandrel, etc., and achieve simple preparation process and time-saving processing Cost saving and easy to operate

Active Publication Date: 2011-02-16
江苏隆达超合金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Copper alloy pipe is an indispensable key material for condensers, coolers, heat exchangers, etc. The traditional processing method is extrusion, but the yield is not high. At present, planetary rolling mills are used to produce short-process copper alloy coils in China. It has obvious competitive advantages in terms of quality and price, but it is difficult for the mandrel to withstand the strength at high temperatures above 900°C during planetary rolling of copper alloy tubes, and it is not resistant to rolling. At present, although the best material H13 steel is used when rolling white copper alloys The service life of each is very short, this problem has been plagued by people in the industry

Method used

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  • Mandril for copper alloy pipe planetary rolling mill and manufacturing method thereof
  • Mandril for copper alloy pipe planetary rolling mill and manufacturing method thereof
  • Mandril for copper alloy pipe planetary rolling mill and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Chemical composition (weight percent, balance is iron)

[0019] nickel

chromium

molybdenum

manganese

titanium

vanadium

aluminum

35

19

9

0.8

1.2

0.1

0.05

[0020] A method for making a mandrel for a copper alloy tube planetary rolling mill, comprising the following process steps:

[0021] (1) Batching: batching is carried out according to the composition of the mandrel;

[0022] (2) Vacuum induction furnace smelting: add: 1# electrolytic nickel, metal chromium, 1# metal manganese, molybdenum rod and 20# carbon steel in the crucible of the vacuum furnace in sequence, after heating up and melting, add: sponge titanium , A00 aluminum ingot and V-2 metal vanadium; the vacuum degree of the vacuum induction furnace is: 1MPa; the melting temperature is: 1630°C, and the melting time is 15 minutes to form a molten metal;

[0023] (3) Casting ingot mould: the above-mentioned molten metal is passed thro...

Embodiment 2

[0027] Chemical composition (weight percent, balance is iron)

[0028] nickel

chromium

molybdenum

manganese

titanium

vanadium

aluminum

40

21

12

1.8

1.5

0.5

0.2

[0029] A method for making a mandrel for a copper alloy tube planetary rolling mill, comprising the following process steps:

[0030] (1) Batching: batching is carried out according to the composition of the mandrel;

[0031] (2) Vacuum induction furnace smelting: add: 1# electrolytic nickel, metal chromium, 1# metal manganese, molybdenum rod and 20# carbon steel in the crucible of the vacuum furnace in sequence, after heating up and melting, add: sponge titanium , A00 aluminum ingot and V-2 metal vanadium; the vacuum degree of the vacuum induction furnace is: 6.7×10 -1 MPa; the melting temperature is: 1680°C, the melting time is 6 minutes, and the molten metal is formed;

[0032] (3) Casting ingot mould: the above-mentioned molten metal ...

Embodiment 3

[0036] Chemical composition (weight percent, balance is iron)

[0037] nickel

chromium

molybdenum

manganese

titanium

vanadium

aluminum

38

20

10

1.5

1.3

0.3

0.1

[0038] A method for making a mandrel for a copper alloy tube planetary rolling mill, comprising the following process steps:

[0039] (1) Batching: batching is carried out according to the composition of the mandrel;

[0040] (2) Vacuum induction furnace smelting: add: 1# electrolytic nickel, metal chromium, 1# metal manganese, molybdenum rod and 20# carbon steel in the crucible of the vacuum furnace in sequence, after heating up and melting, add: sponge titanium , A00 aluminum ingot and V-2 metal vanadium; the vacuum degree of the vacuum induction furnace is: 8×10 -1 MPa; the melting temperature is: 1650°C, the melting time is 10 minutes, and the molten metal is formed;

[0041] (3) Casting ingot mold: Casting ingot mold: the above-menti...

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Abstract

The invention relates to a mandril for a copper alloy pipe planetary rolling mill, which comprises the following components of 35 to 40wt% of nickel, 19 to 21wt% of chromium, 9 to 12wt% of molybdenum, 0.8 to 1.8wt% of manganese, 1.2 to 1.5wt% of titanium, 0.1 to 0.5wt% of vanadium, 0.05 to 0.2wt% of aluminum and the balance ferrum. The mandril material of the invention is an alloy with the nickel as the main material and has the advantages of good high temperature resistance performance, high strength, good flexibility, no invalidation or chap when working at the temperature of 900 to 1000 DEG C for a long time, requirement satisfaction of the temperature of planetary rolling copper alloys, simple preparation technology, easy operation, in particular to the aspects of gold processing, and processing time and cost saving.

Description

technical field [0001] The invention relates to a mandrel, in particular to a mandrel for a copper alloy tube planetary rolling mill and a manufacturing method thereof. Background technique [0002] Copper alloy pipe is an indispensable key material for condensers, coolers, heat exchangers, etc. The traditional processing method is extrusion, but the yield is not high. At present, planetary rolling mills are used to produce short-process copper alloy coils in China. It has obvious competitive advantages in terms of quality and price, but it is difficult for the mandrel to withstand the strength at high temperatures above 900°C during planetary rolling of copper alloy tubes, and it is not resistant to rolling. At present, although the best material H13 steel is used when rolling white copper alloys The service life of each is very short, and this problem has been plagued by people in the industry. Contents of the invention [0003] The purpose of the present invention is t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C30/00C22C1/02B21B25/00
Inventor 周向东浦益龙
Owner 江苏隆达超合金股份有限公司
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