CN110681716A - Preparation method of beryllium bronze tube - Google Patents
Preparation method of beryllium bronze tube Download PDFInfo
- Publication number
- CN110681716A CN110681716A CN201910882582.3A CN201910882582A CN110681716A CN 110681716 A CN110681716 A CN 110681716A CN 201910882582 A CN201910882582 A CN 201910882582A CN 110681716 A CN110681716 A CN 110681716A
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- Prior art keywords
- beryllium bronze
- tube
- annealing
- stretching
- cutting
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/08—Making tubes with welded or soldered seams
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Extraction Processes (AREA)
Abstract
The invention provides a method for preparing a beryllium bronze pipe, which takes a beryllium bronze strip as a raw material and comprises the following steps: welding, stretching, annealing, re-stretching and cutting the tube, wherein the frequency conversion speed during welding is 12.50min-1, and the output is 4.6 meters per minute; annealing the coiled beryllium bronze tube blank at 500-600 ℃ for 5 hours by using a mixed gas of hydrogen and nitrogen as a protective gas; in the secondary stretching step, the annealed beryllium bronze tube is stretched for 4-5 times on a pulling trolley disc again to obtain the beryllium bronze tube with the outer diameter of 2.0 +/-0.2 mm; the tube cutting is to cut the beryllium bronze tube into small sections by adopting a tube cutting machine. The beryllium bronze strip is adopted as a raw material, and the beryllium bronze strip with fine tissue and high density is prepared by welding, coiling, annealing, re-coiling, cutting and other processes, so that the beryllium bronze strip has the advantages of simple process, high production efficiency, high yield, energy conservation, consumption reduction and the like.
Description
Technical Field
The invention relates to the technical field of copper alloy pipe manufacturing, in particular to a beryllium bronze pipe manufacturing method.
Background
Common electrode tubes (also called electrode copper tubes and copper tubes for punching machines) are special electrodes for processing small holes by spark machine tools, and are used for processing various deep small holes and blind holes, products comprise copper tubes, brass tubes and bronze tubes, the existing specification phi is 0.20-phi 1.80, and the common electrode tubes are widely used for wire-passing holes for die wire cutting; a spinneret orifice of the spinneret plate; the group holes of the sieve plate; a flushing hole of the electric plate; heat dissipation ports for various engines; a nozzle hole of the oil nozzle; filtering holes in paper making, chemical fiber, food and other industries, etc. No matter the surface of the workpiece is a curved surface or an inclined surface, the required hole can be smoothly machined at high speed, and the depth-diameter ratio of the machined hole can reach more than 200. However, beryllium bronze tubes are used in the communication industry, and mainly utilize the action of an electric field on electron flow in vacuum to obtain electronic devices for amplifying or oscillating diode signals, so that the requirements of various technical indexes of the beryllium bronze tubes are strict, and the production difficulty is high.
The existing manufacturing method of the beryllium bronze pipe comprises the processes of heating, finishing, inspecting, head making, stretching, straightening, head cutting, cleaning, finishing, inspecting, warehousing and the like, and has the main problems that: long production time, high cost and low yield. Or a copper pipe is prepared by punching by a punch press, so that the preparation efficiency is low. Therefore, there is a need to improve the prior art to improve the production efficiency and meet the production requirements better.
Disclosure of Invention
The invention aims to provide a method for preparing a beryllium bronze pipe, which is characterized in that a beryllium bronze pipe with fine tissue and high density is prepared by adopting a beryllium bronze belt as a raw material through the processes of welding, coiling, annealing, coiling, cutting and the like, and has the advantages of simple process, high production efficiency, high yield, energy conservation, consumption reduction and the like.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a beryllium bronze pipe preparation method takes a beryllium bronze strip as a raw material, and comprises the following steps: welding, stretching, annealing, re-stretching and cutting the tube.
According to the scheme, the frequency conversion speed of the welding machine tool during welding is 12.50min-1And 4.6 meters of beryllium bronze strip is produced per minute, and the beryllium bronze tube blank with the outer diameter of 5.0mm and the wall thickness of 0.25mm is welded by the beryllium bronze strip.
According to the scheme, the position stretching is to stretch the beryllium bronze pipe blank to 3.85mm through reducing the diameter and the wall for 5-6 times in a disc pulling and turning disc.
According to the scheme, the annealing is as follows: and (2) annealing the coiled beryllium bronze tube by using a mixed gas of hydrogen and nitrogen with the hydrogen content of 5-10% (preventing the copper tube from blackening and enabling the tube to be blackened due to too low hydrogen content) as a protective gas, wherein the annealing temperature is 500-600 ℃, and the annealing time is 5 h. After the first coil drawing, the copper tube is too hard, and if the copper tube is continuously drawn to be thin, the copper tube is broken, and the copper tube is annealed to prevent the copper tube from being broken when the copper tube is drawn again. The annealing temperature is controlled to be 500-600 ℃, annealing is insufficient when the annealing temperature is too low, and annealing is too excessive when the annealing temperature is too high, so that the secondary stretching of the copper pipe is not facilitated.
According to the scheme, the secondary drawing is to draw the annealed beryllium bronze tube on a disc drawing machine disc again for 4-5 times, the drawing coefficient of each time is 0.6mm, the drawing speed is 28m/min, the outer diameter and the wall thickness of the copper tube are changed to reach the parameters of a product, and the beryllium bronze tube with the outer diameter of 2.0 +/-0.2 mm is obtained. If a thinner copper tube is desired, such as 1.0, then the annealing, drawing, is repeated.
According to the scheme, the tube cutting machine is used for cutting the beryllium bronze tube which is stretched again into the beryllium bronze tube with the required length.
The invention has the beneficial effects that:
1) the invention adopts the beryllium bronze strip as the raw material, and the beryllium bronze strip is prepared by the processes of welding, coiling, annealing, re-coiling, cutting and the like, so that the production time can be shortened, the yield per unit time can be improved, the production efficiency can be improved by about 20 percent, and the invention has the advantages of simple process, high production efficiency, high yield, energy saving, consumption reduction and the like.
2) The beryllium bronze pipe product prepared by the method has the advantages of fine tissue and high density.
Detailed Description
The technical solution of the present invention will be described with reference to the following examples.
Example 1:
the invention provides a method for preparing a beryllium bronze pipe, which takes a beryllium bronze strip as a raw material and comprises the following steps:
1) welding: controlling the variable frequency speed of the welding machine tool to be 12.50min-1And 4.6 meters is produced per minute, and a beryllium bronze strip is welded into a beryllium bronze tube blank with the outer diameter of 5.0mm and the wall thickness of 0.25 mm:
cleaning the row rollers of the welding machine, turning on a power supply to position the copper strip, adjusting the height of a tungsten electrode from a copper tube to 3mm, adjusting the argon flow of an inner electrode and an outer electrode to form a 45-degree angle between the copper tube and the welding machine, and adjusting the current of the welding machine (the current of the welding machine: 60-63A, the total control barometer: 0.4-0.6MPa, and the argon flow meter: LZB-10(0.4-0.8) Nm3a/N internal argon flow meter: LZB-4(40-80) Nm3N, external argon flow rate meter: LZB-6(60-100) Nm3/N), insert the beryllium bronze pipe blank that takes shape earlier stage and receive the material machine, receive material dish variable frequency speed: 26-27min－1The above works are all ready to start welding;
2) positioning and stretching: pulling the beryllium bronze pipe blank for 5-6 times on a disc pulling lathe, firstly, penetrating the ground core head into the blank pipe, then penetrating the blank pipe into a specified die, carrying out correct matching for stretching, and stretching the outer diameter of the beryllium bronze pipe blank to 3.85mm through reducing the diameter and the wall;
3) annealing: annealing the coiled beryllium bronze tube by using a mixed gas of hydrogen and nitrogen with the hydrogen content of 5-10% as a protective gas, wherein the annealing temperature is 550 ℃, and the annealing time is 5 hours;
4) and (3) secondary stretching: drawing the annealed beryllium bronze tube on a disc drawing disc again for 4-5 times, wherein the drawing coefficient of each time is 0.6mm, the drawing speed is 28m/min, and the outer diameter and the wall thickness of the copper tube are changed to reach the parameters of a product, so that the beryllium bronze tube with the outer diameter of 2.0 +/-0.2 mm is obtained;
5) cutting a pipe: and cutting the beryllium bronze pipe stretched again into the beryllium bronze pipe with the required length by using a pipe cutting machine.
The above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the above embodiments describe the present invention in detail, those skilled in the art should understand that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention and any modifications and equivalents may fall within the scope of the claims.
Claims (6)
1. A beryllium bronze pipe preparation method is characterized in that a beryllium bronze belt is used as a raw material, and the method comprises the following steps: welding, stretching, annealing, re-stretching and cutting the tube.
2. The method for preparing the beryllium bronze tube according to claim 1, wherein the frequency conversion speed of a welding machine tool during welding is 12.50min-1, the output is 4.6 meters per minute, and a beryllium bronze strip is welded into a beryllium bronze tube blank with the outer diameter of 5.0mm and the wall thickness of 0.25 mm.
3. The method for preparing the beryllium bronze tube according to claim 1, wherein the stretching is to stretch the beryllium bronze tube blank to 3.85mm by reducing the diameter and the wall for 5-6 times in a disc pulling and turning disc.
4. The method for preparing the beryllium bronze tube according to claim 1, wherein the annealing is: and (3) annealing the coiled beryllium bronze tube by using a mixed gas of hydrogen and nitrogen with the hydrogen content of 5-10% as a protective gas, wherein the annealing temperature is 500-600 ℃, and the annealing time is 5 h.
5. The method for preparing the beryllium bronze tube according to claim 1, wherein the step of secondary stretching is to stretch the annealed beryllium bronze tube on a disc pulling trolley disc for 4-5 times, the coefficient of each stretching is 0.6mm, the drawing speed is 28m/min, the outer diameter and the wall thickness of the copper tube are changed to reach the parameters of a product, and the beryllium bronze tube with the outer diameter of 2.0 +/-0.2 mm is obtained.
6. The method for preparing the beryllium bronze tube according to claim 1, wherein the tube cutting is performed by cutting the redrawn beryllium bronze tube into beryllium bronze tubes with required lengths by using a tube cutting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910882582.3A CN110681716A (en) | 2019-09-18 | 2019-09-18 | Preparation method of beryllium bronze tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910882582.3A CN110681716A (en) | 2019-09-18 | 2019-09-18 | Preparation method of beryllium bronze tube |
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| Publication Number | Publication Date |
|---|---|
| CN110681716A true CN110681716A (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910882582.3A Pending CN110681716A (en) | 2019-09-18 | 2019-09-18 | Preparation method of beryllium bronze tube |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1265612A (en) * | 1997-08-06 | 2000-09-06 | Sms德马格股份公司 | Method for producing welded Cu and Cu alloy pipes |
| JP2004292897A (en) * | 2003-03-27 | 2004-10-21 | Nippon Steel Corp | Electroseamed steel pipe having damping property, and its production method |
| CN102794606A (en) * | 2012-07-16 | 2012-11-28 | 东莞市竹菱铜业有限公司 | Copper pipe preparation method and pipe making machine for implementing same |
| CN106216431A (en) * | 2016-08-05 | 2016-12-14 | 徐高磊 | A kind of production technology of D type copper pipe |
-
2019
- 2019-09-18 CN CN201910882582.3A patent/CN110681716A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1265612A (en) * | 1997-08-06 | 2000-09-06 | Sms德马格股份公司 | Method for producing welded Cu and Cu alloy pipes |
| JP2004292897A (en) * | 2003-03-27 | 2004-10-21 | Nippon Steel Corp | Electroseamed steel pipe having damping property, and its production method |
| CN102794606A (en) * | 2012-07-16 | 2012-11-28 | 东莞市竹菱铜业有限公司 | Copper pipe preparation method and pipe making machine for implementing same |
| CN106216431A (en) * | 2016-08-05 | 2016-12-14 | 徐高磊 | A kind of production technology of D type copper pipe |
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Application publication date: 20200114 |
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