CN107604276B - A kind of processing method of cutting brass alloy stick, wire rod - Google Patents
A kind of processing method of cutting brass alloy stick, wire rod Download PDFInfo
- Publication number
- CN107604276B CN107604276B CN201710806613.8A CN201710806613A CN107604276B CN 107604276 B CN107604276 B CN 107604276B CN 201710806613 A CN201710806613 A CN 201710806613A CN 107604276 B CN107604276 B CN 107604276B
- Authority
- CN
- China
- Prior art keywords
- disk
- annealing
- pickling
- blank
- drawn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
A kind of processing method of a kind of cutting brass alloy stick, wire rod, process flow are as follows: brass alloys ingot casting is squeezed to 4.5~10mm of Φ → pickling → primary disk draw → primary annealing → pickling → secondary disk drawing → double annealing → pickling → disk draws (joint drawing) to finished product (2~8mm of Φ).It is characterized in that the first passage disk draws working modulus control 10%~45%, and annealing temperature is controlled at 300 DEG C~450 DEG C using the disk drawing of two passages and annealing operation；Second passage disk draws working modulus control 13%~50%, and annealing temperature is controlled at 300 DEG C~420 DEG C.The present invention passes through the regulation to annealing temperature and cold working rate, avoid the recrystallized structure undue growth of brass alloys, inhibit reunion and the particle growth of the soft point of grain boundaries, soft point is set to be evenly distributed disperse, improve cutting brass alloy turning, the chip breaking in boring procedure, chip removal ability, fabulous cutting ability is finally shown, the processing request of high speed, lathe with high precision is complied fully with.
Description
Technical field
The present invention relates to the processing technologys of brass alloys, and in particular to a kind of processing of cutting brass alloy stick, wire rod
Method.
Background technique
Free-cutting copper alloy is widely used in the works such as machinery, electronics, electrical because having the performances such as good turning, drilling
Industry.Wherein, the most commonly used with ledrite and Bi brass.Lead, bismuth element are not solid-solution in brass base, and are deposited in the form of soft point
It is brass crystal boundary, brass base tissue is made to show discontinuity, to embodies Cutting free effect in machining process.
The conventional production practices of existing small dimension lead, bismuth brass alloy rod and wire rod, except squeezing, in addition to drawing procedure, usually
There are also single or multiple intermediate semi-finished products to anneal, and to eliminate cold work hardening, so that it is restored plasticity and is further continued for processing, such as invent
104624704 A of patent CN discloses a kind of HPb63-2 ledrite production of wirerods, process flow are as follows: squeezes to 12.3mm
→ sour water pickling →, which is pulled to 9.5mm → semi-finished product are annealed → and is pulled to 7.6mm → semi-finished product are annealed → and is pulled to 5.8mm → semi-finished product, moves back
Fire → being pulled to 4.5mm, → semi-finished product are annealed, and → being pulled to 3.2mm, → semi-finished product, which are annealed, → to be pulled to 2.2mm → finished products → to be pulled into
2.032 ± 0.0254mm of product → inspection → bundle material → storage.Above-mentioned semi-finished product annealing temperature is at 650 DEG C to 670 DEG C, finished products
At 630 DEG C.Under so high annealing temperature, brass base recrystallized structure is coarse, lead or bismuth particle of the disperse in grain boundaries
Assemble, lead to particle particle growth, quantity is sharply reduced.Chip breaking, chip removal ability reduce when machining, under cutting ability
Drop.
The development trend of Current mechanical processing is increasingly automated, high speed and high-precision densification, thus to rapidoprint
Cutting ability proposes requirements at the higher level.Cutting brass stick, the wire rod of above-mentioned traditional machining processes production have been unable to meet high speed, height
The process requirements of fine turning lathe.The cutting ability for how improving small dimension stick, wire rod, it is one big to be that current free-cutting brass faces
Challenge.105821357 A of patent of invention CN discloses a kind of production technology of lead and yellow-collation copper bar material, using ingot casting → extruding → disk
Plane skin → company drawing continuous annealing → joint drawing technique is drawn, obtains that recrystallized structure crystal grain is tiny, the excellent ledrite of cutting ability
Bar.But the company in the production technology draws the land occupation of continuous annealing equipment big, and operating process is cumbersome, and especially replacement mold process is complicated,
It is only applicable to the wire production of the single specification of high-volume.For the brass alloys wire and rod more for specification, single batch quantity is few,
Actual production has little significance.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of suitable for small dimension (Φ 2 for above-mentioned prior art deficiency
~8mm) cutting brass alloy stick, wire rod production and processing technology.
A kind of processing method of cutting brass alloy stick, wire rod, process flow are as follows: by brass alloys ingot casting squeeze to
4.5~10mm of Φ → pickling → primary disk draws → once annealing → pickling → secondary disk drawing → double annealing → pickling → disk drawing
(joint drawing) to finished product (2~8mm of Φ).It is characterized in that using the disk drawing of two passages and annealing operation, the first passage disk is drawn
10%~45%, annealing temperature is controlled at 300 DEG C~450 DEG C for working modulus control；Second passage disk draw working modulus control 13%~
50%, annealing temperature is controlled at 300 DEG C~420 DEG C.
A kind of processing method of cutting brass alloy stick, wire rod, the specific steps are as follows:
1, it squeezes: carrying out decortication extruding after ingot casting is heated, extruded stock specification is 4.5~10mm of Φ, elongation percentage (A50)
20%~45%；
2, pickling: after step 1 gained extruded stock connector, under room temperature, it is placed in sulfur acid 10%~30%(mass ratio, similarly hereinafter)
Acid solution in impregnate 2~3min, after high pressure water flushing wash clean, suds impregnate；
3, primary disk is drawn: the extruded stock after step 2 pickling being carried out disk drawing, control working modulus is 10%~45%, after disk is drawn
Elongation percentage (A50) 7%~20%；
4, primary annealing: the blank after step 3 disk is drawn, which is placed in shaft furnace or bell furnace, to be made annealing treatment, annealing temperature
300 DEG C~450 DEG C of degree, 3~10h of soaking time, elongation percentage (A50) is 10%~25% after annealing；
5, the blank after step 4 annealing pickling: is placed in 2~3min of immersion, high pressure in the acid solution of sulfur acid 10%~30%
After water is rinsed well, suds impregnate；
6, secondary disk is drawn: the blank after step 5 pickling being carried out disk drawing, control working modulus is 13%~50%, and disk prolongs after drawing
Stretch rate (A50) 3%~15%；
7, double annealing: the blank after step 6 disk is drawn, which is placed in shaft furnace or bell furnace, to be made annealing treatment, annealing temperature
350 DEG C~420 DEG C, 3~10h of soaking time, elongation percentage (A after annealing of degree50) 20%~45%；
8, the blank after step 7 annealing pickling: is placed in 2~3min of immersion, high pressure in the acid solution of sulfur acid 10%~30%
After water is rinsed well, suds impregnate；
9, disk drawing or joint drawing: the blank after step 8 pickling is subjected to disk drawing or joint drawing operation, according to product
Can control working modulus is 5%~30%, obtains disk round wires material or scale bar；
10, product inspection is put in storage.
For the present invention by the regulation to annealing temperature and cold working rate, the recrystallized structure for avoiding brass alloys is excessively raw
It is long, inhibit reunion and the particle growth of the soft point of grain boundaries, so that soft point is evenly distributed disperse, improve cutting brass alloy vehicle
It cuts, the chip breaking in boring procedure, chip removal ability, finally shows fabulous cutting ability, comply fully with high speed, lathe with high precision
Processing request.
Detailed description of the invention
Fig. 1 is the metallographic microscope of 1 products obtained therefrom of embodiment, and wherein Fig. 1 a is lateral metallographic structure and Fig. 1 b is longitudinal metallographic group
Photo is knitted, amplifies 200 times.
Fig. 2 is the metallographic microscope of 2 products obtained therefrom of embodiment, and wherein Fig. 2 a is lateral metallographic structure and Fig. 2 b is longitudinal metallographic group
Photo is knitted, amplifies 200 times.
Fig. 3 is the metallographic microscope of 1 products obtained therefrom of comparative example, and wherein Fig. 3 a is lateral metallographic structure and Fig. 3 b is longitudinal metallographic group
Photo is knitted, amplifies 200 times.
Fig. 4 is that the cutting swarf of 1 products obtained therefrom of embodiment shines as figure (ledrite).
Fig. 5 is that the cutting swarf of 2 products obtained therefrom of embodiment shines as figure (Bi brass).
Specific embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail:
Embodiment 1:
The processing method of Cutting free C3601 lead brass alloy bar, the specific steps are as follows:
1, it squeezes: by the C3601 lead and yellow-collation copper ingot of length 480mm, specification Φ 145,640 is heated in medium-frequency induction furnace
DEG C, decortication extruding then is carried out on 1250 tons of indirect extrusion machines, carries out take-up by disk circle mode, extruded stock specification is Φ
8.0mm, elongation percentage (A50) it is 34%.
2, pickling: after extruded stock connector, under room temperature, be placed in sulfur acid 20%(mass ratio, similarly hereinafter) acid solution in impregnate
3min, after high pressure water flushing wash clean, suds impregnate.
3, primary disk is drawn: the extruded stock after step 2 pickling is being carried out inverted disk drawing, disk pulling rate degree 70m/min, inlet wire
Specification Φ 8.0mm, outlet specification Φ 7.2mm, working modulus 19%, gained blank elongation percentage (A50) it is 12%.
4, primary annealing: Φ 7.2mm blank, which is placed in shaft furnace, after step 3 disk is drawn makes annealing treatment, annealing temperature
350 DEG C, soaking time 5h, gained annealing blank elongation percentage (A50) it is 17%.
5, pickling: the blank after step 4 annealing is placed in the acid solution of sulfur acid 20% and impregnates 3min, high pressure water rinses dry
After net, suds impregnate.
6, secondary disk is drawn: the blank after step 5 pickling draw in inverted disk, disk pulling rate degree 50m/min, inlet wire rule
Lattice Φ 7.2mm, outlet specification Φ 6.35mm, working modulus 22.2%, gained blank elongation percentage (A50) it is 6%.
7, double annealing: the Φ 6.35mm blank after step 6 disk is drawn, which is placed in bell furnace, to be made annealing treatment, annealing temperature
400 DEG C, soaking time 6h of degree, gained annealing blank elongation percentage (A50) are 32%.
8, pickling: the blank after step 7 annealing is placed in the acid solution of sulfur acid 20% and impregnates 3min, high pressure water rinses dry
After net, suds impregnate.
9, joint drawing: the blank after step 8 pickling is subjected to joint drawing operation by 2 tons of joint drawing units, is drawn
Pull out speed 90m/min, inlet wire specification Φ 6.35mm, outlet specification Φ 6.0mm, working modulus 10.7%, product scale 2.5m.
10, product inspection is put in storage
The C3601 lead and yellow-collation copper bar material grain size obtained by above-mentioned production and processing technology is tiny, and uniformly, lead distribution of particles is more
It dissipates, uniformly, as shown in Fig. 1 a, Fig. 1 b and Fig. 4, recrystallized structure crystal grain is tiny, and distribution more even dispersion, cutting swarf is short and small,
With fabulous cutting ability.
Embodiment 2:
The processing method of Cutting free HBi59-1 bismuth-brass alloy bar, the specific steps are as follows:
1, it squeezes: the HBi59-1 Bi brass ingot of length 480mm, specification Φ 145 is heated in medium-frequency induction furnace
620 DEG C, decortication extruding then is carried out on 1250 tons of indirect extrusion machines, carries out take-up by disk circle mode, extruded stock specification is Φ
8.0mm, elongation percentage (A50) it is 30%.
2, pickling: after extruded stock connector, under room temperature, be placed in sulfur acid 20%(mass ratio, similarly hereinafter) acid solution in impregnate
3min, after high pressure water flushing wash clean, suds impregnate.
3, primary disk is drawn: the extruded stock after step 2 pickling is carried out disk drawing, disk pulling rate degree 70m/min, inlet wire inverted
Specification Φ 8.0mm, outlet specification Φ 7.2mm, working modulus 19%, gained blank elongation percentage (A50) it is 9%.
4, primary annealing: Φ 7.2mm blank, which is placed in shaft furnace, after step 3 disk is drawn makes annealing treatment, annealing temperature
380 DEG C, soaking time 4h, gained annealing blank elongation percentage (A50) it is 19%.
5, pickling: the blank after step 4 annealing is placed in the acid solution of sulfur acid 20% and impregnates 3min, high pressure water rinses dry
After net, suds impregnate.
6, secondary disk is drawn: the blank after step 5 pickling is carried out to carry out disk drawing inverted, disk pulling rate degree 50m/min, into
Line gauge lattice Φ 7.2mm, outlet specification Φ 6.35mm, working modulus 22.2%, gained blank elongation percentage (A50) it is 7%.
7, double annealing: the Φ 6.35mm blank after step 6 disk is drawn, which is placed in bell furnace, to be made annealing treatment, annealing temperature
410 DEG C, soaking time 5h of degree, gained annealing blank elongation percentage (A50) it is 33%.
8, pickling: the blank after step 7 annealing is placed in the acid solution of sulfur acid 20% and impregnates 3min, high pressure water rinses dry
After net, suds impregnate.
9, joint drawing: the blank after step 8 pickling is subjected to joint drawing operation by 2 tons of joint drawing units, is drawn
Pull out speed 90m/min, inlet wire specification Φ 6.35mm, outlet specification Φ 6.0mm, working modulus 10.7%, product scale 2.5m.
10, product inspection is put in storage
The HBi59-1 Bi brass bar grain size obtained by above-mentioned production and processing technology is tiny, and uniformly, bismuth distribution of particles is more
It dissipates, uniformly, as shown in Fig. 2 a, Fig. 2 b and Fig. 5, recrystallized structure uniform small grains, bismuth distribution of particles disperse is uniform, cutting swarf
It is short and small, there is fabulous cutting ability.
Embodiment 3:
The processing method of Cutting free HPb63-3 lead brass alloy wire rod, the specific steps are as follows:
1, it squeezes: the HPb63-3 lead and yellow-collation copper ingot of length 480mm, specification Φ 145 is heated in medium-frequency induction furnace
700 DEG C, decortication extruding then is carried out on 1250 tons of indirect extrusion machines, carries out take-up by disk circle mode, extruded stock specification is Φ
5.0mm, elongation percentage (A50) it is 38%.
2, pickling: after extruded stock connector, under room temperature, be placed in sulfur acid 20%(mass ratio, similarly hereinafter) acid solution in impregnate
3min, after high pressure water flushing wash clean, suds impregnate.
3, primary disk is drawn: the extruded stock after step 2 pickling is carried out disk drawing, disk pulling rate degree 70m/min, inlet wire inverted
Specification Φ 5.0mm, outlet specification Φ 3.9mm, working modulus 39.2%, gained blank elongation percentage (A50) it is 9%.
4, primary annealing: Φ 3.9mm blank, which is placed in shaft furnace, after step 3 disk is drawn makes annealing treatment, annealing temperature
340 DEG C, soaking time 6h, gained annealing blank elongation percentage (A50) it is 14%.
5, pickling: the blank after step 4 annealing is placed in the acid solution of sulfur acid 20% and impregnates 3min, high pressure water rinses dry
After net, suds impregnate.
6, secondary disk is drawn: the blank after step 5 pickling is carried out to carry out disk drawing inverted, disk pulling rate degree 60m/min, into
Line gauge lattice Φ 3.9mm, outlet specification Φ 3.0mm, working modulus 40.8%, gained blank elongation percentage (A50) it is 4%.
7, double annealing: the Φ 3.0mm blank after step 6 disk is drawn, which is placed in bell furnace, to be made annealing treatment, annealing temperature
400 DEG C, soaking time 5h of degree, gained annealing blank elongation percentage (A50) it is 35%.
8, pickling: the blank after step 7 annealing is placed in the acid solution of sulfur acid 20% and impregnates 3min, high pressure water rinses dry
After net, suds impregnate.
9, finished disk is drawn: the blank after step 8 pickling being carried out disk by vertical plate drawing machine and draws operation, disk pulling rate degree 60m/
Min, inlet wire specification Φ 3.0mm, outlet specification Φ 2.7mm, working modulus 19%.
10, product inspection is put in storage
The HPb63-3 lead brass alloy line grain size obtained by above-mentioned production and processing technology is tiny, uniformly, lead distribution of particles
Disperse uniformly has fabulous cutting ability.
Comparative example 1:
The Conventional processing methods of Cutting free C3601 lead brass alloy bar, the specific steps are as follows:
1, it squeezes: by the C3601 lead and yellow-collation copper ingot of length 480mm, specification Φ 145,640 is heated in medium-frequency induction furnace
DEG C, decortication extruding then is carried out on 1250 tons of indirect extrusion machines, carries out take-up by disk circle mode, extruded stock specification is Φ
7.3mm, elongation percentage (A50) it is 35%
2, pickling: after extruded stock connector, under room temperature, be placed in sulfur acid 20%(mass ratio, similarly hereinafter) acid solution in impregnate
3min, after high pressure water flushing wash clean, suds impregnate.
3, primary disk is drawn: the extruded stock after step 2 pickling is carried out disk drawing, disk pulling rate degree 70m/min, inlet wire inverted
Specification Φ 7.3mm, outlet specification Φ 6.4mm, working modulus 23.1%, gained blank elongation percentage (A50) it is 12%.
4, primary annealing: Φ 6.4mm blank, which is placed in bell furnace, after step 3 disk is drawn makes annealing treatment, annealing temperature
560 DEG C, soaking time 3h, gained annealing blank elongation percentage (A50) it is 46%.
5, pickling: being placed in sulfur acid 20% for the blank after step 4 annealing, impregnate 3min in the mix acid liquor containing nitric acid 7%,
After high pressure water flushing wash clean, suds impregnate..
6, joint drawing: the blank after step 5 pickling is subjected to joint drawing operation by 2 tons of joint drawing units, is drawn
Pull out speed 90m/min, inlet wire specification Φ 6.4mm, outlet specification Φ 6.0mm, working modulus 12.1%, product scale 2.5m.
7, product inspection is put in storage
The C3601 lead and yellow-collation copper bar material grain size obtained by above-mentioned production and processing technology is coarse, and lead distribution of particles is uneven,
Grain is not of uniform size, and as shown in Figure 3a, 3b, cutting ability is general.
It is explanation above by reference to embodiment to the detailed description of the producing process of cutting brass alloy stick, wire rod
Property without being restrictive, therefore change and modification in the case where not departing from present general inventive concept should belong to protection of the present invention
In range.
Claims (1)
1. a kind of processing method of cutting brass alloy stick, wire rod, process flow are as follows: by brass alloys ingot casting extruding → acid
Wash → primary disk draws → primary annealing → pickling → secondary disk drawing → double annealing → pickling → disk is pulled to finished product, it is characterised in that
Steps are as follows:
(1), it squeezes: carrying out decortication extruding after ingot casting is heated, extruded stock specification is 4.5~10mm of Φ, elongation percentage A5020%~
45%；
(2), pickling: after extruded stock connector obtained by step (1), under room temperature, it is placed in the acid solution of 10%~30% mass ratio of sulfur acid
2~3min of middle immersion, after high pressure water flushing wash clean, suds impregnate；
(3), primary disk is drawn: the extruded stock after step (2) pickling being carried out disk drawing, control working modulus is 10%~45%, after disk is drawn
Elongation percentage A507%~20%；
(4), primary annealing: the blank after step (3) disk is drawn, which is placed in shaft furnace or bell furnace, to be made annealing treatment, annealing temperature
300 DEG C~450 DEG C of degree, 3~10h of soaking time, elongation percentage A50 is 10%~25% after annealing；
(5), pickling: by step (4) annealing after blank be placed in the acid solution of 10%~30% mass ratio of sulfur acid impregnate 2~
3min, after high pressure water flushing wash clean, suds impregnate；
(6), secondary disk is drawn: the blank after step (5) pickling being carried out disk drawing, control working modulus is 13%~50%, and disk prolongs after drawing
Stretch rate A503%~15%；
(7), double annealing: the blank after step (6) disk is drawn, which is placed in shaft furnace or bell furnace, to be made annealing treatment, annealing temperature
350 DEG C~420 DEG C, 3~10h of soaking time, elongation percentage A after annealing of degree5020%~45%；
(8), pickling: by step (7) annealing after blank be placed in the acid solution of 10%~30% mass ratio of sulfur acid impregnate 2~
3min, after high pressure water flushing wash clean, suds impregnate；
(9), disk drawing or joint drawing: the blank after step (8) pickling is subjected to disk drawing or joint drawing operation, according to product
Can control working modulus is 5%~30%, obtains 2~8mm of Φ disk round wires material or scale bar；
(10), product inspection is put in storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710806613.8A CN107604276B (en) | 2017-09-08 | 2017-09-08 | A kind of processing method of cutting brass alloy stick, wire rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710806613.8A CN107604276B (en) | 2017-09-08 | 2017-09-08 | A kind of processing method of cutting brass alloy stick, wire rod |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107604276A CN107604276A (en) | 2018-01-19 |
| CN107604276B true CN107604276B (en) | 2019-06-14 |
Family
ID=61062341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710806613.8A Active CN107604276B (en) | 2017-09-08 | 2017-09-08 | A kind of processing method of cutting brass alloy stick, wire rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107604276B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109848241A (en) * | 2018-12-28 | 2019-06-07 | 芜湖楚江合金铜材有限公司 | It is a kind of high-strength, high-elastic to take the auxiliary preparation method with wire rod |
| CN113981269B (en) * | 2021-10-29 | 2022-10-04 | 宁波金田铜业(集团)股份有限公司 | Brass alloy and preparation method thereof |
| CN115354188B (en) * | 2022-08-26 | 2023-09-15 | 宁波金田铜业(集团)股份有限公司 | Easily-welded brass and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948531A (en) * | 2006-11-03 | 2007-04-18 | 宁波博威集团有限公司 | High manganese copper nickel zinc alloy and preparation method of its wire, rod and plate belt material |
| CN104593706A (en) * | 2013-10-31 | 2015-05-06 | 宁波金田铜业(集团)股份有限公司 | Cold continuous rolling method of brass wires |
| CN104624704A (en) * | 2013-11-08 | 2015-05-20 | 青岛宏泰铜业有限公司 | Hpb63-2 lead-brass wire rod production technology |
| CN105821357A (en) * | 2016-05-17 | 2016-08-03 | 安徽鑫科新材料股份有限公司 | Production process for lead brass bars |
| CN106345839A (en) * | 2016-08-25 | 2017-01-25 | 铜陵华洋特种线材有限责任公司 | Brass wire manufacturing process |
-
2017
- 2017-09-08 CN CN201710806613.8A patent/CN107604276B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1948531A (en) * | 2006-11-03 | 2007-04-18 | 宁波博威集团有限公司 | High manganese copper nickel zinc alloy and preparation method of its wire, rod and plate belt material |
| CN104593706A (en) * | 2013-10-31 | 2015-05-06 | 宁波金田铜业(集团)股份有限公司 | Cold continuous rolling method of brass wires |
| CN104624704A (en) * | 2013-11-08 | 2015-05-20 | 青岛宏泰铜业有限公司 | Hpb63-2 lead-brass wire rod production technology |
| CN105821357A (en) * | 2016-05-17 | 2016-08-03 | 安徽鑫科新材料股份有限公司 | Production process for lead brass bars |
| CN106345839A (en) * | 2016-08-25 | 2017-01-25 | 铜陵华洋特种线材有限责任公司 | Brass wire manufacturing process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107604276A (en) | 2018-01-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107604276B (en) | A kind of processing method of cutting brass alloy stick, wire rod | |
| CN100368627C (en) | Bullet wire cable and its production process | |
| KR102009755B1 (en) | Copper alloy wire material and manufacturing method thereof | |
| CN101419849B (en) | High conductivity flexible aluminum wire and manufacturing method thereof | |
| KR102233844B1 (en) | Micro grain-texture electrode wire material and preparation method therefor and use thereof | |
| CN111926214B (en) | Free-cutting lead brass bar with excellent cold machining plasticity and preparation method thereof | |
| CN105414426B (en) | A kind of hot-swage method of kirsite small specification tube or bar | |
| JP2009280860A (en) | Cu-Ag ALLOY WIRE AND METHOD FOR PRODUCING THE SAME | |
| CN105463277B (en) | A kind of rods and bars of aluminium alloy and its production method | |
| CN110331348A (en) | Amorphous alloy material, amorphous alloy flexbile gear and preparation method thereof | |
| CN103443310A (en) | Cu-co-si-based copper alloy strip for electron material, and method for manufacturing same | |
| CN103495613A (en) | Production process and drawing equipment of phi-5.0mm 1960MPa super-strength steel wires | |
| CN104985018B (en) | Improve the production method of high-carbon steel wire rod iron scale pickling performance | |
| KR100879815B1 (en) | Ag-Cu Alloy for Processing Fine Wire and Method for Manufacturing the Same | |
| CN109439860A (en) | Super free-cutting ferritic stainless steel essence line and preparation method thereof | |
| CN102152069B (en) | Method for producing steel sectional material of air valve | |
| CN104097032B (en) | A kind of bearing needle moulding process | |
| CN110947757A (en) | Production method for controlling SWRH82B high-carbon wire rod oxide layer | |
| CN104438430B (en) | A kind of titanium alloy abnormal shape capillary tubes processing method | |
| CN111663063B (en) | Lead brass bar suitable for high-speed automatic processing and preparation method thereof | |
| CN110238618A (en) | One kind is for continuous casting lead and yellow-collation copper bar material disk circle continuous production technology method | |
| CN102896167A (en) | Worm bevel gear cold forging manufacturing process | |
| CN103449737B (en) | A kind of solution and manufacture method thereof that can improve glass fiber wire-drawing toughness | |
| CN104275575A (en) | Cold-drawing machining process for lead-containing free-cutting steel wire rods | |
| CN108866280A (en) | A kind of manufacturing method of large-size high-strength ventilation flabellum aluminum alloy die forgings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |