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Preparation process of copper pipe material for electronic thermotubes

A preparation process and heat pipe technology, which is applied in the field of preparation process of copper tube materials for electronic heat pipes, can solve problems such as difficult processes, and achieve the effects of meeting customer needs, reducing process processing, and reducing production costs

Active Publication Date: 2012-09-05
中铝洛阳铜加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The copper tubes prepared by the existing copper tube processing technology cannot meet the requirements of customers who need to heat the copper tubes at about 1000 ℃ and then process them into electronic heat pipes, and the copper tubes after high temperature heating should not be wrinkled and have a smooth surface. Difficulty. At present, domestic copper tube materials for electronic heat pipes still need to be imported in large quantities.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A straight tube of hard heat pipe material, the specification is φ6X0.30mm, the allowable deviation of outer diameter is ±0.03mm, the allowable deviation of wall thickness is ±0.02mm, Rm≥320Mpa, Hv: 105-130, straightness <12mm / 3000mm;

[0010] 1. Melting and casting: use vacuum induction furnace for melting and casting, melting temperature: 1150~1250℃, casting speed: 2.5~3.5m / h, cast into an ingot of φ245mm specification.

[0011] 2. Extrusion: use an extruder to perform water seal peeling and extrude the ingot with a matching mandrel. The extrusion process is heating temperature: 740 ~ 880 ℃, extrusion speed: 35 ~ 50mm / s, extrusion ratio: 21 , Pressure residual thickness: 25 ~ 40mm, extruded into a tube blank of φ80X10mm.

[0012] 3. Sawing: Use a sawing machine to cut the head and tail of the extruded tube blank.

[0013] 4. Straightening: Use horizontal straightening to straighten the sawed tube blank.

[0014] 5. Rolling: Use the tube rolling mill to roll the stra...

Embodiment 2

[0021] A straight tube of hard heat pipe material, the specification is φ6X0.30mm, the allowable deviation of outer diameter is ±0.03mm, the allowable deviation of wall thickness is ±0.02mm, Rm≥320Mpa, Hv: 105-130, straightness <12mm / 3000mm;

[0022] 1. Melting and casting: use coreless vacuum induction furnace for melting and casting, melting temperature: 1150~1250℃, casting speed: 2.5~3.5m / h, cast into an ingot of φ245mm specification.

[0023] 2. Extrusion: use an extruder to perform water seal peeling and extrude the ingot with a matching mandrel. The extrusion process is heating temperature: 740 ~ 880 ℃, extrusion speed: 35 ~ 50mm / s, extrusion ratio: 21 , Pressure residual thickness: 25 ~ 40mm, extruded into a tube blank of φ80X10mm.

[0024] 3. Sawing: Use the sawing equipment attached to the extruder to cut the head and tail of the extruded tube blank.

[0025] 4. Straightening: Use horizontal straightening to straighten the sawed tube blank.

[0026] 5. Rolling: Use ...

Embodiment 3

[0033] A straight tube of hard heat pipe material, specification φ6X0.30mm, allowable deviation of outer diameter ±0.03mm, allowable deviation of wall thickness ±0.02mm, Rm≥320Mpa, Hv: 105-130, straightness <12mm / 3000mm.

[0034] 1. Melting and casting: use cored vacuum induction furnace for melting and casting, melting temperature: 1150~1250℃, casting speed: 2.5~3.5m / h, cast into an ingot of φ245mm specification.

[0035] 2. Extrusion: use an extruder to perform water seal peeling and extrude the ingot with a matching mandrel. The extrusion process is heating temperature: 740 ~ 880 ℃, extrusion speed: 35 ~ 50mm / s, extrusion ratio: 21 , Pressure residual thickness: 25 ~ 40mm, extruded into a tube blank of φ80X10mm.

[0036] 3. Sawing: Use the sawing equipment attached to the extruder to cut the head and tail of the extruded tube blank.

[0037] 4. Straightening: Use horizontal straightening to straighten the sawed tube blank.

[0038] 5. Rolling: Use the tube rolling mill to r...

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PUM

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Abstract

A preparation process of copper pipe material for electronic thermotubes comprises the following steps: casting, squeezing, saw cutting, straightening, rolling, bull block drawing, rewinding, annealing, drawing and packaging. Continuous drawing of tubular products can be realized, the productivity can be extremely improved to produce the copper pipe material meeting the practical requirements of clients for electronic thermotubes with small diameter, high precision, low cost and simple process; the dimensional tolerance of the product meets the requirements of international standard of GB17791-2007 or American standard of ASTM B111, and the hard performance satisfies that Rm is not less than 320Mpa and the HV 0.3 is 105-130.

Description

technical field [0001] The invention relates to a process for processing non-ferrous metal materials, in particular to a process for preparing copper tube materials for electronic heat pipes. Background technique [0002] Due to its extremely high thermal conductivity and good isothermal properties, the heat transfer area on both sides of the hot and cold sides can be changed arbitrarily, the heat transfer can be long-distance, and the temperature can be controlled. It is widely used in aerospace, military industry, metallurgy, chemical industry, Transportation, machinery and electronics industries. The copper tube materials for electronic heat pipes are mainly divided into two types according to production and processing methods: groove type and sintered type. The present invention mainly provides copper tube materials for sintered electronic heat pipes. The copper tube prepared by the existing copper tube processing technology cannot meet the requirements of the customer ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/06C22B15/00C21D1/26C21D9/08C22F1/08B21C1/22
Inventor 曹利苗国伟刘海涛王强张颜陈炬王庆彦张书远赵向东庄英华李建涛李永强伍仁忠
Owner 中铝洛阳铜加工有限公司
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