CN105821357B - A kind of production technology of lead and yellow-collation copper bar material - Google Patents
A kind of production technology of lead and yellow-collation copper bar material Download PDFInfo
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- CN105821357B CN105821357B CN201610325744.XA CN201610325744A CN105821357B CN 105821357 B CN105821357 B CN 105821357B CN 201610325744 A CN201610325744 A CN 201610325744A CN 105821357 B CN105821357 B CN 105821357B
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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
- C22F1/08—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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- 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
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
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- Crystallography & Structural Chemistry (AREA)
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- Metal Extraction Processes (AREA)
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Abstract
The invention provides a kind of production technology of lead and yellow-collation copper bar material, plane skin-company is drawn to obtain lead and yellow-collation copper bar material after drawing continuous annealing-joint drawing by ingot casting-extruding-disk, the recrystal grain of the lead and yellow-collation copper bar material obtained according to such a production technology is tiny, α phases are divided into relatively isolated small massive texture by numerous tiny graininess β phases, improve the cutting ability of lead and yellow-collation copper bar material.
Description
Technical field
The present invention relates to a kind of production technology of lead and yellow-collation copper bar material.
Background technology
Why ledrite has excellent cutting ability, is primarily due to Pb elements in the tissue in the form of soft point
In the presence of having separated the continuity of brass base so that the chip breaking when being processed on lathe of lead and yellow-collation copper bar material is easy.
Ф 2.0~6.0mm small dimension ledrite rod material production technology processes：Ingot casting-extruding-disk drawing-shaft furnace moves back
Fire-pickling-joint drawing, although the lead and yellow-collation copper bar material of this technique productions can meet in low speed automatic lathe processing will
Ask, but as machine cut processing constantly develops to automation, high speed and precise treatment direction, the machinability of material is proposed
Higher requirement, in some special manufacture fields, the lead and yellow-collation copper bar material of this technique productions has been not suitable with high speed, fine turning lathe
Processing request.
Main cause is that ledrite well furnace temperature range is 500~600 DEG C, and annealing soaking time is generally 120
~360 minutes, because annealing temperature is high, soaking time length, recrystallized structure was thick, and α phases and β phases are in block distribution, between α phases
It is interconnected, because α phase matter is soft, β phase matter is hard, and chip breaking and chip removal are not easy if the soft α phases of matter are interconnected, during machining.
The content of the invention
For above weak point, the invention provides a kind of production technology of bluish yellow copper bar material.
A kind of production technology of lead and yellow-collation copper bar material, the production technology comprise the following steps：
(1) by raw material in 1030~1090 DEG C of meltings, then pour into holding furnace and stand 5~20 minutes；
(2) horizontal casting：Copper water after fusing is subjected to horizontal casting, ingot casting specification is 80~Φ of Φ 200mm；
(3) ingot casting heats：Ingot casting heats 0.5~2 hour at 550~750 DEG C；
(4) extrude：The ingot casting heated carries out decortication extruding, and squeeze pressure is 5~20MN, extruded stock specification limit Φ 4
~8mm；
(5) disk draws plane skin：Extruded stock carries out disk and draws plane skin, and working modulus is controlled 2~10%；
(6) continuous annealing is even drawn：Disk draws the line base after plane skin to draw continuous annealing unit stretching by connecting, and inlet wire specification 4~8mm of Φ, goes out
Line gauge lattice Φ 2.2~Φ 6.2mm, online annealing belong to the annealing of continuous spreading formula, and annealing linear velocity is 150~400m/min, is moved back
Fiery correction factor is 3.0~10.0；
(7) joint drawing：Even 2.2~Φ of Φ 6.2mm lines bases after continuous annealing are drawn to draw out 2.0~Φ of Φ 6.0mm through combining
Bar；
(8) product inspection, packaging, storage.
Each technological parameter of horizontal casting is in the step (2)：Hauling speed 3 × 104~15 × 104μm/s, traction row
Journey 4 × 104~12 × 104μm, 10~120ms of down time, anti-back speed degree 3 × 104~14 × 104μm/s, anti-regression journey 0.2
×104~6 × 104μm, 5~100ms between the stopping time is moved back, ingot casting carries out sawing, sawing length on semi-automatic horizontal metal band sawing machine
300~600mm.
In the step (3), ingot casting is heated in Medium Frequency Induction Heating Furnace by piece/hour of feed rate 8~20.
In the step (4), the ingot casting heated carries out decortication extruding, discard on 800~1800 tons of indirect extrusion machines
Thickness control is in 10-25mm, while extrusion line base quantity 1~4, extruded stock disk justify mode take-up.
In the step (5), the Tail-heating of the head of a disk extruded stock and another disk extruded stock is connect to 550~700 DEG C
Head, then draw and dig skin by inverted wire-drawing machine disk, dig skin 0.1~0.3mm of amount, disk often coiled after drawing control again 500~
1500kg。
In the step (6), the number of molds for even drawing continuous annealing unit is 1~4,1~8m/s of draw speed,.
In the step (7), joint drawing uses 2t joint drawing units, 0.5~10m/s of drawing speed, rod length fixing
2~3.5m of length.
Annealing way of the invention by changing existing lead and yellow-collation copper dish line so that ledrite recrystallized structure is changed into from thick
Tiny, tissue topography is：α phases are divided into relatively isolated small bulk by numerous tiny graininess β phases, by verification experimental verification,
The tiny lead and yellow-collation copper bar material of interior tissue, cutting ability are significantly improved, and can meet the processing request of High-Speed Automatic lathe.
Brief description of the drawings
Fig. 1 is to pass through the model C3604 Φ 5mm lead obtained by embodiment 1 (right side) and the production technology of comparative example 1 (left side)
The internal organizational structure figure of brass rod；
Fig. 2 is to pass through the model C3604 Φ 5mm lead obtained by embodiment 1 (right side) and the production technology of comparative example 1 (left side)
The car bits pattern of brass rod；
Fig. 3 is to pass through the model C3604 Φ 5mm lead obtained by embodiment 1 (right side) and the production technology of comparative example 1 (left side)
The drilling cuttings pattern of brass rod；
Fig. 4 is to pass through the model HPb59-1 Φ obtained by embodiment 2 (right side) and the production technology of comparative example 2 (left side)
The internal organizational structure figure of 4.2mm lead and yellow-collation copper bar materials；
Fig. 5 is to pass through the model HPb59-1 Φ obtained by embodiment 2 (right side) and the production technology of comparative example 2 (left side)
The car bits pattern of 4.2mm lead and yellow-collation copper bar materials；
Fig. 6 is to pass through the model HPb59-1 Φ obtained by embodiment 2 (right side) and the production technology of comparative example 2 (left side)
The drilling cuttings pattern of 4.2mm lead and yellow-collation copper bar materials.
Embodiment
Embodiment 1
A kind of production technology of lead and yellow-collation copper bar material, the model C3604 Φ 5mm of the lead and yellow-collation copper bar material, the production work
Skill comprises the following steps：
(1) dispensing is carried out by the composition of C3604 lead and yellow-collation copper bar materials, melting in electric induction furnace, melting is added portionwise in dispensing
Temperature is 1040 DEG C, and 5~20 minutes are stood after whole metal moltens；
(2) horizontal casting：Copper water by crystallizer, draw by the horizontal continuity out of holding furnace, ingot casting specification Φ 120mm, traction speed
Degree 6 × 104μm/s, draft travel 7 × 104μm, down time 50ms, anti-back speed degree 6 × 104μm/s, anti-regression journey 1 × 104μ
M, moves back 20ms between the stopping time, and ingot casting carries out sawing, sawing length 500mm on semi-automatic horizontal metal band sawing machine；
(3) ingot casting heats：Ingot casting is heated in Medium Frequency Induction Heating Furnace by piece/hour of feed rate 11, is heated to
620 DEG C of temperature, it is incubated 0.8 hour；
(4) extrude：The ingot casting heated carries out decortication extruding, extruding force 10MN, discard on 1250 tons of indirect extrusion machines
Thickness control is in 15mm, and extruded stock specification is Φ 6.5mm, while extrusion line base quantity 4, extruded stock disk justify mode take-up.
(5) disk draws plane skin：The Tail-heating of the head of one disk extruded stock and another disk extruded stock is to 600 DEG C of joints, then
Skin is drawn and dug by inverted wire-drawing machine disk, and working modulus control digs skin amount 0.25mm 7%, and disk is often coiled after drawing and controlled again
1200kg。
(6) continuous annealing is even drawn：Disk draws the line base after plane skin to draw continuous annealing unit stretching, number of molds 2, inlet wire specification by connecting
Φ 6mm, outlet specification Φ 5.4mm, draw speed 4.8m/s, online annealing linear velocity is 245m/min, correction factor of annealing
3.4。
(7) joint drawing：Even the Φ 5.4mm lines base after continuous annealing is drawn to draw out Φ 5.0mm's by 2t joint drawing units
Bar, drawing speed 2m/s, rod length fixing length 2.5m.
(8) product inspection, packaging, storage.
The recrystal grain for the C3604 Φ 5mm lead and yellow-collation copper bar materials for producing to obtain according to above-mentioned production technology is tiny, α phase quilts
Numerous tiny graininess β phases are divided into relatively isolated small massive texture, improve cutting for C3604 Φ 5mm lead and yellow-collation copper bar materials
Performance is cut, as Figure 1-3.
Embodiment 2
A kind of production technology of lead and yellow-collation copper bar material, the model HPb59-1 Φ 4.2mm of the lead and yellow-collation copper bar material, the life
Production. art comprises the following steps：
(1) dispensing is carried out by the composition of HPb59-1 lead and yellow-collation copper bar materials, melting in electric induction furnace is added portionwise in dispensing, melted
It is 1045 DEG C to refine temperature, and holding furnace is poured into after whole metal moltens and stands 10 minutes；
(2) horizontal casting：Copper water by crystallizer, draw by the horizontal continuity out of holding furnace, ingot casting specification Φ 160mm, traction speed
Degree 10 × 104μm/s, draft travel 10 × 104μm, down time 100ms, anti-back speed degree 10 × 104μm/s, anti-regression journey 5 ×
104μm, 80ms between the stopping time is moved back, ingot casting carries out sawing, sawing length 500mm on semi-automatic horizontal metal band sawing machine；
(3) ingot casting heats：Ingot casting is heated in Medium Frequency Induction Heating Furnace by piece/hour of feed rate 10, is heated to
650 DEG C of temperature, it is incubated 1.5 hours；
(4) extrude：The ingot casting heated carries out decortication extruding, extruding force 15MN, discard on 1250 tons of indirect extrusion machines
Thickness control is in 15mm, extruded stock specification limit Φ 6mm, while extrusion line base quantity 2, extruded stock disk justify mode take-up.
(5) disk draws plane skin：The Tail-heating of the head of one disk extruded stock and another disk extruded stock is to 600 DEG C of joints, then
Skin is drawn and dug by inverted wire-drawing machine disk, and working modulus control digs skin amount 0.2mm 6.5%, and disk is often coiled after drawing and controlled again
1000kg。
(6) continuous annealing is even drawn：Disk draws the line base after plane skin to draw continuous annealing unit stretching, number of molds 3, inlet wire specification by connecting
Φ 5.6mm, outlet specification Φ 4.8mm, draw speed 5m/s, online annealing linear velocity is 260m/min, correction factor of annealing
3.2。
(7) joint drawing：Even the Φ 4.8mm lines base after continuous annealing is drawn to draw out Φ 4.2mm's by 2t joint drawing units
Bar, drawing speed 2.2m/s, rod length fixing length 2.5m.
(8) product inspection, packaging, storage.
The recrystal grain for the HPb59-1 Φ 4.2mm lead and yellow-collation copper bar materials for producing to obtain according to above-mentioned production technology is tiny, α
Relatively isolated small massive texture is mutually divided into by numerous tiny graininess β phases, improves HPb59-1 Φ 4.2mm ledrites
The cutting ability of bar, as Figure 4-Figure 6.
Comparative example 1
A kind of production technology of lead and yellow-collation copper bar material, the model C3604 Φ 5mm of the lead and yellow-collation copper bar material, the production work
Skill is same as Example 1, and well furnace is simply used in step (6), and annealing temperature is 540 DEG C, 50 minutes heating-up times,
Soaking time is 210 minutes, and carries out joint drawing after overpickling after anneal.
The C3604 Φ 5mm lead and yellow-collation copper bar materials for producing to obtain according to above-mentioned production technology, due to annealing temperature is high, insulation when
Between it is long, recrystallized structure is thick, and α phases and β phases are in block distribution, are interconnected between α phases, because α phase matter is soft, β phase matter is hard, matter
Chip breaking and chip removal are not easy if soft α phases are interconnected, during machining, as Figure 1-3.
Comparative example 2
A kind of production technology of lead and yellow-collation copper bar material, the model HPb59-1 Φ 4.2mm of the lead and yellow-collation copper bar material, the life
Production. art is same as Example 2, and well furnace is simply used in step (6), and annealing temperature is 560 DEG C, the heating-up time 50
Minute, soaking time is 180 minutes, and carries out joint drawing after overpickling after anneal.
The HPb59-1 Φ 4.2mm lead and yellow-collation copper bar materials for producing to obtain according to above-mentioned production technology, because annealing temperature is high, protects
Warm time length, recrystallized structure is thick, and α phases are in block distribution with β phases, are interconnected between α phases, because α phase matter is soft, β phase matter
Firmly, chip breaking and chip removal are not easy if the soft α phases of matter are interconnected, during machining, as Figure 4-Figure 6.
The above-mentioned detailed description carried out with reference to embodiment to the production technology of lead and yellow-collation copper bar material is illustrative rather than limit
Qualitatively, several embodiments, therefore the change in the case where not departing from present general inventive concept can be included according to limited scope
And modification, it should belong within protection scope of the present invention.
Claims (5)
1. a kind of production technology of lead and yellow-collation copper bar material, it is characterised in that the production technology comprises the following steps：
（1）By raw material in 1030 ~ 1090 DEG C of meltings, then pour into holding furnace and stand 5 ~ 20 minutes；
（2）Horizontal casting：Copper water after fusing is subjected to horizontal casting, ingot casting specification is 80 ~ Φ of Φ 200mm；
（3）Ingot casting heats：Ingot casting was in 550 ~ 750 DEG C of sensing heatings 0.5 ~ 2 hour；
（4）Extruding：The ingot casting heated carries out decortication extruding, and squeeze pressure is 5 ~ 20MN, 4 ~ 8mm of extruded stock specification limit Φ；
（5）Disk draws plane skin：Extruded stock carries out disk and draws plane skin, and working modulus is controlled 2 ~ 10%；
（6）Even draw continuous annealing：Disk draws the line base after plane skin to draw continuous annealing unit stretching, inlet wire specification 4 ~ 8mm of Φ, outlet specification by connecting
Φ 2.2 ~ Φ 6.2mm, online annealing belong to the annealing of continuous spreading formula, and annealing speed line is 150 ~ 400m/min, annealing amendment system
Number is 3.0 ~ 4.0；
（7）Joint drawing：Φ 2.2 ~ Φ 6.2mm lines bases after continuous annealing are even drawn to draw out 2.0 ~ Φ of Φ 6.0mm bar through combining；
（8）Product inspection, packaging, storage；
The step（4）In, the ingot casting heated carries out decortication extruding, discard thickness control on 800 ~ 1800 tons of indirect extrusion machines
System is in 10-25mm, while extrusion line base quantity 1 ~ 4, extruded stock disk justify mode take-up；
The step（7）In, joint drawing uses 2t joint drawing units, 0.5 ~ 10m/s of drawing speed, and rod length fixing length 2 ~
3.5m；
The tissue topography of the lead and yellow-collation copper bar material obtained according to above-mentioned technique is that α phases are divided into phase by numerous tiny graininess β phases
To isolated small bulk.
2. production technology according to claim 1, it is characterised in that the step（2）Each technique ginseng of middle horizontal casting
Number is：Hauling speed 3 × 104~15×104μm/s, draft travel 4 × 104~12×104μm, it is 10 ~ 120ms of down time, counter to move back
Speed 3 × 104~14×104μm/s, anti-regression journey 0.2 × 104~6×104μm, 5 ~ 100ms between the stopping time is moved back, ingot casting is semi-automatic
Sawing, 300 ~ 600mm of sawing length are carried out on horizontal metal band sawing machine.
3. production technology according to claim 1, it is characterised in that the step（3）In, ingot casting is in Frequency Induction Heating
Heated in stove by piece/hour of feed rate 8 ~ 20.
4. production technology according to claim 1, it is characterised in that the step（5）In, the head of a disk extruded stock and
Then the Tail-heating of another disk extruded stock draws and dug skin by inverted wire-drawing machine disk to 550 ~ 700 DEG C of joints, dig skin amount
0.1 ~ 0.3mm, disk are often coiled after drawing and controlled again in 500 ~ 1500kg.
5. production technology according to claim 1, it is characterised in that the step（6）In, connect the mould for drawing continuous annealing unit
Quantity is 1 ~ 4,1 ~ 8m/s of draw speed.
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| CN111304488B (en) * | 2020-03-25 | 2021-05-11 | 宁波金田铜业(集团)股份有限公司 | Stress cracking resistant lead brass bar and preparation method thereof |
| CN111663063B (en) * | 2020-06-23 | 2022-04-01 | 宁波金田铜业(集团)股份有限公司 | Lead brass bar suitable for high-speed automatic processing and preparation method thereof |
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| JPS5925938A (en) * | 1982-08-03 | 1984-02-10 | Nitto Kinzoku Kogyo Kk | Free-cutting brass having resistance to dezincification corrosion and its production |
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| CN101579701A (en) * | 2009-06-18 | 2009-11-18 | 中铝洛阳铜业有限公司 | Preparation process of copper pipe material for electronic thermotubes |
| CN105039777A (en) * | 2015-05-05 | 2015-11-11 | 宁波博威合金材料股份有限公司 | Machinable brass alloy and preparation method thereof |
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