CN109454123A - A kind of processing method of the toothed circular copper pipe of inner wall - Google Patents
A kind of processing method of the toothed circular copper pipe of inner wall Download PDFInfo
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- CN109454123A CN109454123A CN201811286139.1A CN201811286139A CN109454123A CN 109454123 A CN109454123 A CN 109454123A CN 201811286139 A CN201811286139 A CN 201811286139A CN 109454123 A CN109454123 A CN 109454123A
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- casting
- bronze
- processing method
- copper pipe
- ingot
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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
-
- 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)
- Manufacture And Refinement Of Metals (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention discloses a kind of processing methods of the toothed circular copper pipe of inner wall, comprising the following steps: step 1): founding, chooses acid bronze alloy as raw material, will be solidified as solid casting in bronze ingot after acid bronze alloy fusing；Step 2: it squeezes, the casting in bronze ingot is squeezed into circular pipe blank；Step 3): multi pass drawing carries out slot treatment using travelling core ball and to core ball, guarantees that the dentation of inner wall is evenly distributed orderly in pulling process, until finished product；Step 4): annealing carries out the heat treatment process of vacuum mode to tubing per pass after completion of processing.The present invention can make product inner wall when being squeezed into blank that can facilitate the cold working for carrying out next step with tooth, and avoid because continuous drawing causes the defects of breaking, pulling.
Description
Technical field
The present invention relates to non-ferrous metals processing fields, and in particular to a kind of processing method of the toothed circular copper pipe of inner wall.
Background technique
The main function of hub bearing (hub bearing) is load-bearing and provides accurate guidance for the rotation of wheel hub, it was both
It bears axial load and bears radial load again, be a very important components.Traditional bearing used for automobile wheels is by two
What set tapered roller bearing or ball bearing were composed, installation, oiling, sealing and the adjustment of clearance of bearing are all in automobile
It is carried out on production line.This structure makes it in auto producer assembly difficulty, at high cost, poor reliability, and automobile exists
When maintenace point is safeguarded, it is also necessary to be cleaned to bearing, oiling and adjustment.Hub-bearing unit is in standard angular contact ball bearing
With grow up on the basis of tapered roller bearing, two sets of bearings as one, are had that assembling property is good, can omit trip by it
Gap adjustment, light-weight, compact-sized, load bearing capacity is big, can be packed into lubricating grease in advance for sealing bearing, omit external hub sealing
And the advantages that from repairing, it is widely used in car, also has the tendency that gradually expanding application in truck.And internal tooth circle
Guan Ze is the important component of hub bearing, and for processing Ball retainer, its effect is by the rolling of Bearing inner
Pearl is separated with uniform distance, makes to avoid influencing each other when its work to cause bearing failure.Due to and common copper processing techniques
General round tube and square tube can only be produced, so current processing technology is that thick-walled tube is carried out to complicated machining, first
Say that internal dentation excision forming carries out secondary machine molding, serious waste of resources and inefficiency to tubing again later.This
Invention can avoid subsequent secondary operation and waste by hot extrusion-cold drawing technique directly by internal tooth machine-shaping, right
There is extremely positive meaning in the production of bearing.
Summary of the invention
In view of this, providing a kind of toothed circular copper pipe of inner wall the purpose of the invention is to process internal tooth round tube
Processing method.
To solve the above-mentioned problems, the technical scheme is that
A kind of processing method of the toothed circular copper pipe of inner wall, comprising the following steps:
Step 1): founding chooses acid bronze alloy as raw material, will be solidified as solid casting in bronze after acid bronze alloy fusing
Ingot；
Step 2: it squeezes, the casting in bronze ingot is squeezed into circular pipe blank；
Step 3): multi pass drawing carries out slot treatment using travelling core ball and to core ball, guarantees the inner wall in pulling process
Dentation is evenly distributed orderly, until finished product；
Step 4): annealing carries out the heat treatment process of vacuum mode to tubing per pass after completion of processing.
Further, in step 1), the acid bronze alloy meets GB/T467-2010 Cu-CATH-1 (Cu-CATH -1)
Standard.Copper purity must reach 99.995%.
Further, specific step is as follows for founding process in step 1): the acid bronze alloy being cut into bulk and is packed into
The feeding mechanism of vacuum electron beam smelting furnace is evacuated to power transmission after high vacuum after entering the electron-beam furnace, carries out electron beam essence
Refining, the copper melts after fusing fall into device for directionally solidifying-graphite crucible, form the casting in bronze ingot by cooled and solidified.The copper
Ingot diameters are 310mm, casting in bronze ingot sawing length 400mm described in every section.
Further, after the completion of step 1), the casting in bronze ingot is heated using power frequency heating furnace.
Further, it in step 2, when being squeezed, is worn using 5000 tons of horizontal water seal extruders and matched extrusion die
Hole for heating the casting in bronze ingot carry out tube extrusion, extrusion die be special extrusion die, on the basis of general extrusion die
The tap hole that a diameter phi 10mm is added at the position of each 30m in its left and right, can make internal tooth flow velocity uniformly in this way and not occur
Distortion, while pecker also uses slotted design, groove is uniformly distributed, ditch depth 8.5mm, furrow width 6.5mm.
Further, in step 2, extrusion speed control in 35 ~ 40mm/s, squeeze general working rate control 88 ~ 95% it
Between, first the casting in bronze ingot heated is sent into extrusion cylinder when extruding, a circular ring shape is put behind the casting in bronze ingot
Dummy block, makes to squeeze axis and pushes the dummy block and the casting in bronze ingot travels forward, and passes through extrusion die orifice and the perforation aciculiform
At annulus and form the circular pipe blank.The circular pipe blank specification is Φ 100*8.5mm, inner teeth high 8mm, facewidth 6mm.
Further, in step 3), when time drawing of shunting, the pipe specification is Φ 100*8.5mm*5000mm, per pass
Secondary working modulus control is 40 ~ 45%.The specification that the production tube to be formed is completed in drawing is Φ 60*4.5*8000mm, and inner teeth is high
3mm, facewidth 2mm.
Further, between step 1) and step 2, increase to the detecting step of the casting in bronze ingot, analyze copper content and each
Kind impurity content.
Further, between step 2 and step 3), increase and dimensional tolerance and surface quality inspection are carried out to the circular pipe blank
The step of looking into, and the quality problems checked are modified.
Further, after the completion of step 4), by product technology requirement indices to the production tube after annealing into
The final detection of row, the index include product size tolerance, surface quality, chemical component, mechanical performance, are carried out after detection is qualified
It is packed and stored.
Beneficial effects of the present invention: a kind of processing method of the toothed circular copper pipe of inner wall of the present invention is adopted in step 2
Product is processed with innovative extrusion die, make product when being squeezed into blank inner wall can with tooth, it is convenient into
The cold working of row next step；In step 3), using the drawing die and core ball of special designing, according to the relationship of working modulus by blank
It is drawn to finished size；In step 4), product is put into vacuum annealing furnace and is heat-treated, and used and vacuumize and be filled with
The mode of protective gas heats product to 450 DEG C to restore its plasticity, avoids because continuous drawing is caused to break, be pulled
Defect.
Specific implementation method
Embodiment 1
A kind of processing method of the toothed circular copper pipe of inner wall, comprising the following steps:
Step 1): founding chooses acid bronze alloy as raw material, will be solidified as solid casting in bronze after acid bronze alloy fusing
Ingot；
Step 2: it squeezes, the casting in bronze ingot is squeezed into circular pipe blank；
Step 3): multi pass drawing carries out slot treatment using travelling core ball and to core ball, guarantees the inner wall in pulling process
Dentation is evenly distributed orderly, until finished product；
Step 4): annealing carries out the heat treatment process of vacuum mode to tubing per pass after completion of processing.
Further, in step 1), the acid bronze alloy meets GB/T467-2010 Cu-CATH-1 (Cu-CATH -1)
Standard.Copper purity must reach 99.995%.
Further, specific step is as follows for founding process in step 1): the acid bronze alloy being cut into bulk and is packed into
The feeding mechanism of vacuum electron beam smelting furnace is evacuated to power transmission after high vacuum after entering the electron-beam furnace, carries out electron beam essence
Refining, the copper melts after fusing fall into device for directionally solidifying-graphite crucible, form the casting in bronze ingot by cooled and solidified.The copper
Ingot diameters are 310mm, casting in bronze ingot sawing length 400mm described in every section.
Further, after the completion of step 1), the casting in bronze ingot is heated using power frequency heating furnace.
Further, it in step 2, when being squeezed, is worn using 5000 tons of horizontal water seal extruders and matched extrusion die
Hole for heating the casting in bronze ingot carry out tube extrusion, extrusion die be special extrusion die, on the basis of general extrusion die
The tap hole that a diameter phi 10mm is added at the position of each 30m in its left and right, can make internal tooth flow velocity uniformly in this way and not occur
Distortion, while pecker also uses slotted design, groove is uniformly distributed, ditch depth 8.5mm, furrow width 6.5mm.
Further, in step 2, extrusion speed control squeezes general working rate control between 88%, squeezes in 35mm/s
When first by the casting in bronze ingot heated be sent into extrusion cylinder in, the dummy block of a circular ring shape is put behind the casting in bronze ingot,
Make to squeeze the annulus that axis pushes the dummy block and the casting in bronze ingot travels forward, and is formed across extrusion die orifice and the pecker
And form the circular pipe blank.The circular pipe blank specification is Φ 100*8.5mm, inner teeth high 8mm, facewidth 6mm.
Further, in step 3), when time drawing of shunting, the pipe specification is Φ 100*8.5mm*5000mm, per pass
Secondary working modulus control is 40%.The specification that the production tube to be formed is completed in drawing is Φ 60*4.5*8000mm, and inner teeth is high
3mm, facewidth 2mm.
Further, between step 1) and step 2, increase to the detecting step of the casting in bronze ingot, analyze copper content and each
Kind impurity content.
Further, between step 2 and step 3), increase and dimensional tolerance and surface quality inspection are carried out to the circular pipe blank
The step of looking into, and the quality problems checked are modified.
Further, after the completion of step 4), by product technology requirement indices to the production tube after annealing into
The final detection of row, the index include product size tolerance, surface quality, chemical component, mechanical performance, are carried out after detection is qualified
It is packed and stored.
Embodiment 2
A kind of processing method of the toothed circular copper pipe of inner wall, comprising the following steps:
Step 1): founding chooses acid bronze alloy as raw material, will be solidified as solid casting in bronze after acid bronze alloy fusing
Ingot；
Step 2: it squeezes, the casting in bronze ingot is squeezed into circular pipe blank；
Step 3): multi pass drawing carries out slot treatment using travelling core ball and to core ball, guarantees the inner wall in pulling process
Dentation is evenly distributed orderly, until finished product；
Step 4): annealing carries out the heat treatment process of vacuum mode to tubing per pass after completion of processing.
Further, in step 1), the acid bronze alloy meets GB/T467-2010 Cu-CATH-1 (Cu-CATH -1)
Standard.Copper purity must reach 99.995%.
Further, specific step is as follows for founding process in step 1): the acid bronze alloy being cut into bulk and is packed into
The feeding mechanism of vacuum electron beam smelting furnace is evacuated to power transmission after high vacuum after entering the electron-beam furnace, carries out electron beam essence
Refining, the copper melts after fusing fall into device for directionally solidifying-graphite crucible, form the casting in bronze ingot by cooled and solidified.The copper
Ingot diameters are 310mm, casting in bronze ingot sawing length 400mm described in every section.
Further, after the completion of step 1), the casting in bronze ingot is heated using power frequency heating furnace.
Further, it in step 2, when being squeezed, is worn using 5000 tons of horizontal water seal extruders and matched extrusion die
Hole for heating the casting in bronze ingot carry out tube extrusion, extrusion die be special extrusion die, on the basis of general extrusion die
The tap hole that a diameter phi 10mm is added at the position of each 30m in its left and right, can make internal tooth flow velocity uniformly in this way and not occur
Distortion, while pecker also uses slotted design, groove is uniformly distributed, ditch depth 8.5mm, furrow width 6.5mm.
Further, in step 2, extrusion speed control squeezes general working rate control between 95%, squeezes in 40mm/s
When first by the casting in bronze ingot heated be sent into extrusion cylinder in, the dummy block of a circular ring shape is put behind the casting in bronze ingot,
Make to squeeze the annulus that axis pushes the dummy block and the casting in bronze ingot travels forward, and is formed across extrusion die orifice and the pecker
And form the circular pipe blank.The circular pipe blank specification is Φ 100*8.5mm, inner teeth high 8mm, facewidth 6mm.
Further, in step 3), when time drawing of shunting, the pipe specification is Φ 100*8.5mm*5000mm, per pass
Secondary working modulus control is 45%.The specification that the production tube to be formed is completed in drawing is Φ 60*4.5*8000mm, and inner teeth is high
3mm, facewidth 2mm.
Further, between step 1) and step 2, increase to the detecting step of the casting in bronze ingot, analyze copper content and each
Kind impurity content.
Further, between step 2 and step 3), increase and dimensional tolerance and surface quality inspection are carried out to the circular pipe blank
The step of looking into, and the quality problems checked are modified.
Further, after the completion of step 4), by product technology requirement indices to the production tube after annealing into
The final detection of row, the index include product size tolerance, surface quality, chemical component, mechanical performance, are carried out after detection is qualified
It is packed and stored.
Embodiment 3
A kind of processing method of the toothed circular copper pipe of inner wall, comprising the following steps:
Step 1): founding chooses acid bronze alloy as raw material, will be solidified as solid casting in bronze after acid bronze alloy fusing
Ingot；
Step 2: it squeezes, the casting in bronze ingot is squeezed into circular pipe blank；
Step 3): multi pass drawing carries out slot treatment using travelling core ball and to core ball, guarantees the inner wall in pulling process
Dentation is evenly distributed orderly, until finished product；
Step 4): annealing carries out the heat treatment process of vacuum mode to tubing per pass after completion of processing.
Further, in step 1), the acid bronze alloy meets GB/T467-2010 Cu-CATH-1 (Cu-CATH -1)
Standard.Copper purity must reach 99.995%.
Further, specific step is as follows for founding process in step 1): the acid bronze alloy being cut into bulk and is packed into
The feeding mechanism of vacuum electron beam smelting furnace is evacuated to power transmission after high vacuum after entering the electron-beam furnace, carries out electron beam essence
Refining, the copper melts after fusing fall into device for directionally solidifying-graphite crucible, form the casting in bronze ingot by cooled and solidified.The copper
Ingot diameters are 310mm, casting in bronze ingot sawing length 400mm described in every section.
Further, after the completion of step 1), the casting in bronze ingot is heated using power frequency heating furnace.
Further, it in step 2, when being squeezed, is worn using 5000 tons of horizontal water seal extruders and matched extrusion die
Hole for heating the casting in bronze ingot carry out tube extrusion, extrusion die be special extrusion die, on the basis of general extrusion die
The tap hole that a diameter phi 10mm is added at the position of each 30m in its left and right, can make internal tooth flow velocity uniformly in this way and not occur
Distortion, while pecker also uses slotted design, groove is uniformly distributed, ditch depth 8.5mm, furrow width 6.5mm.
Further, in step 2, extrusion speed control squeezes general working rate control between 90%, squeezes in 37mm/s
When first by the casting in bronze ingot heated be sent into extrusion cylinder in, the dummy block of a circular ring shape is put behind the casting in bronze ingot,
Make to squeeze the annulus that axis pushes the dummy block and the casting in bronze ingot travels forward, and is formed across extrusion die orifice and the pecker
And form the circular pipe blank.The circular pipe blank specification is Φ 100*8.5mm, inner teeth high 8mm, facewidth 6mm.
Further, in step 3), when time drawing of shunting, the pipe specification is Φ 100*8.5mm*5000mm, per pass
Secondary working modulus control is 42%.The specification that the production tube to be formed is completed in drawing is Φ 60*4.5*8000mm, and inner teeth is high
3mm, facewidth 2mm.
Further, between step 1) and step 2, increase to the detecting step of the casting in bronze ingot, analyze copper content and each
Kind impurity content.
Further, between step 2 and step 3), increase and dimensional tolerance and surface quality inspection are carried out to the circular pipe blank
The step of looking into, and the quality problems checked are modified.
Further, after the completion of step 4), by product technology requirement indices to the production tube after annealing into
The final detection of row, the index include product size tolerance, surface quality, chemical component, mechanical performance, are carried out after detection is qualified
It is packed and stored.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
The change or replacement expected without creative work, should be covered by the scope of protection of the present invention.
Claims (10)
1. a kind of processing method of the toothed circular copper pipe of inner wall, it is characterised in that: the following steps are included:
Step 1): founding chooses acid bronze alloy as raw material, will be solidified as solid casting in bronze after acid bronze alloy fusing
Ingot；
Step 2: it squeezes, the casting in bronze ingot is squeezed into circular pipe blank；
Step 3): multi pass drawing carries out slot treatment using travelling core ball and to core ball, guarantees the inner wall in pulling process
Dentation is evenly distributed orderly, until finished product；
Step 4): annealing carries out the heat treatment process of vacuum mode to tubing per pass after completion of processing.
2. a kind of processing method of the toothed circular copper pipe of inner wall according to claim 1, it is characterised in that: step 1)
In, the acid bronze alloy meets GB/T467-2010 Cu-CATH-1 (Cu-CATH -1) standard.
3. a kind of processing method of the toothed circular copper pipe of inner wall according to claim 1, it is characterised in that: in step 1)
Specific step is as follows for founding process: the acid bronze alloy is cut into bulk and is packed into the feeding mechanism of vacuum electron beam smelting furnace,
After entering the electron-beam furnace, it is evacuated to power transmission after high vacuum, carries out electron beam melting purification, the copper melts after fusing fall into orientation
Coagulation system-graphite crucible forms the casting in bronze ingot by cooled and solidified.
4. a kind of processing method of the toothed circular copper pipe of inner wall according to claim 1, it is characterised in that: step 1) is complete
Cheng Hou heats the casting in bronze ingot using power frequency heating furnace.
5. a kind of processing method of the toothed circular copper pipe of inner wall according to claim 1, it is characterised in that: step 2
In, when being squeezed, using 5000 tons of horizontal water seal extruders and matched extrusion die pecker to the casting in bronze ingot of heating
Tube extrusion is carried out, extrusion die is special extrusion die, is added at the position of each 30m in its left and right on the basis of general extrusion die
The tap hole of one diameter phi 10mm, while pecker also uses slotted design, groove is uniformly distributed, ditch depth 8.5mm, furrow width
6.5mm。
6. a kind of processing method of the toothed circular copper pipe of inner wall according to claim 1, it is characterised in that: step 2
In, extrusion speed control squeezes general working rate control between 88 ~ 95% in 35 ~ 40mm/s, the institute that when extruding will first heat
It states casting in bronze ingot to be sent into extrusion cylinder, the dummy block of a circular ring shape is put behind the casting in bronze ingot, push extruding axis described
Dummy block and the casting in bronze ingot travel forward, and form the round tube across the annulus that extrusion die orifice and the pecker are formed
Base.
7. a kind of processing method of inner wall belt tooth circular copper pipe according to claim 1, it is characterised in that: in step 3),
When the drawing of shunting time, working modulus control is 40 ~ 45% per pass.
8. a kind of processing method of the toothed circular copper pipe of inner wall according to claim 1, it is characterised in that:, step 1)
Between step 2, increase the detecting step to the casting in bronze ingot.
9. a kind of processing method of the toothed circular copper pipe of inner wall according to claim 1, it is characterised in that: step 2 with
Between step 3), increase the step of dimensional tolerance and surface quality inspection are carried out to the circular pipe blank, and to the quality checked
Problem is modified.
10. a kind of processing method of the toothed circular copper pipe of inner wall according to claim 1, it is characterised in that: step 4)
After the completion, the production tube after annealing is finally detected by the indices of product technology requirement, the index includes
Product size tolerance, surface quality, chemical component, mechanical performance are packed and stored after detection is qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811286139.1A CN109454123A (en) | 2018-10-31 | 2018-10-31 | A kind of processing method of the toothed circular copper pipe of inner wall |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811286139.1A CN109454123A (en) | 2018-10-31 | 2018-10-31 | A kind of processing method of the toothed circular copper pipe of inner wall |
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| CN109454123A true CN109454123A (en) | 2019-03-12 |
Family
ID=65609078
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| CN201811286139.1A Pending CN109454123A (en) | 2018-10-31 | 2018-10-31 | A kind of processing method of the toothed circular copper pipe of inner wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115141946A (en) * | 2022-08-03 | 2022-10-04 | 中南大学 | Short-process preparation and processing method for high-performance copper alloy wire |
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| CN115141946A (en) * | 2022-08-03 | 2022-10-04 | 中南大学 | Short-process preparation and processing method for high-performance copper alloy wire |
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