CN103611746B - A kind of Hubbing method of great surface quality silver-base alloy bar - Google Patents
A kind of Hubbing method of great surface quality silver-base alloy bar Download PDFInfo
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- CN103611746B CN103611746B CN201310660900.4A CN201310660900A CN103611746B CN 103611746 B CN103611746 B CN 103611746B CN 201310660900 A CN201310660900 A CN 201310660900A CN 103611746 B CN103611746 B CN 103611746B
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Abstract
The invention discloses a kind of Hubbing method of great surface quality silver-base alloy bar, the method is: one, adopt eddy current inspection to search silver-base alloy rod blank surface defects, the blemish found is removed in reconditioning; Two, swager is adopted to carry out swaging to the silver-base alloy rod base removing blemish, then multi pass drawing is carried out to the silver-base alloy rod base after swaging, obtain unfolded, pore, be mingled with and peeling defect, and scuffing depth of defect and the pit defect degree of depth are all less than the silver-base alloy bar of the great surface quality of 0.05mm.The present invention by carrying out eddy current inspection to excellent base, to the pore on its surface, be mingled with, the defect such as folding and peeling carries out reconditioning removal, the various defects of bar are repaired timely, improve the surface quality of subsequent product; Adopt multi-pass, small deformation amount, etc. sizing reduction drawing is carried out to silver-base alloy, improve the technology stability of silver-base alloy bar, stopped the contracting of drawing process footpath, fracture, peeling, folding generation.
Description
Technical field
The invention belongs to precious metal material processing technique field, be specifically related to a kind of Hubbing method of great surface quality silver-base alloy bar.
Background technology
Pd-Ag substrate alloy material is widely used among electronics and aerospace industries with its good conduction, heat conduction and mechanical performance, and the application of its bar is very extensive.Due to special purposes, silver-base alloy bar product is except having higher requirements to performance, surface quality for finished product rod also has very strict requirement, finished surface do not allowed pore, fold, be mingled with and the defect such as peeling, can not have significantly simultaneously, the degree of depth generally can not more than the pit of 0.05mm, scratch defect.
In order to meet the requirement of properties of product, common product adopts hot cogging---and the method for cold drawing is processed, but the excellent base surface that hot-working obtains often has such as: pore, be mingled with, the defect such as folding and peeling, some defect is comparatively tiny, with the naked eye be difficult to find, defect is manually searched in employing, the method defect of reconditioning is not easily eliminated, and the defect in blank can be taken in finished product rod.In addition, although silver alloy bar material processing characteristics is fine, if adopt larger pass reduction to carry out cold drawing, flow of metal is uneven, and the pit on excellent base surface has little time to be full of mould just healing, thus can form the defects such as folding, peeling, pit.Below all can cause that finished surface is of poor quality, the rate that is up to the standards is low.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned the deficiencies in the prior art, provides a kind of Hubbing method of silver-base alloy bar of great surface quality.The method by carrying out eddy current inspection to excellent base, to the pore on its surface, be mingled with, the defect such as folding and peeling carries out reconditioning removal, the various defects of bar are repaired timely, improve the surface quality of subsequent product; Adopt multi-pass, small deformation amount, etc. sizing reduction drawing is carried out to silver-base alloy, improve the technology stability of silver-base alloy bar, stopped the contracting of drawing process footpath, fracture, peeling, folding generation; While the excellent finished product of acquisition, substantially increase the yield rate of product, reduce cost.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of Hubbing method of great surface quality silver-base alloy bar, and it is characterized in that, the method comprises the following steps:
Step one, employing eddy current inspection search silver-base alloy rod blank surface defects, and the blemish found is removed in reconditioning;
Step 2, employing swager carry out swaging to the silver-base alloy rod base removing blemish in step one, then multi pass drawing is carried out to excellent base, obtain unfolded, pore, be mingled with and peeling defect, and scuffing depth of defect and the pit defect degree of depth are all less than the silver-base alloy bar of the great surface quality of 0.05mm; Controlling pass deformation in described drawing process is 4.9% ~ 10%, and the sizing reduction controlling every time is all identical.
The Hubbing method of above-mentioned a kind of great surface quality silver-base alloy bar, drawing described in step 2 adopts double-strand stretching-machine.
The Hubbing method of above-mentioned a kind of great surface quality silver-base alloy bar, the sizing reduction controlling every time in drawing process described in step 2 is 0.3mm ~ 1mm.
The Hubbing method of above-mentioned a kind of great surface quality silver-base alloy bar, the sizing reduction controlling every time in described drawing process is 0.5mm.
The present invention compared with prior art has the following advantages:
1, the present invention carries out eddy current inspection to excellent base, to the pore on its surface, be mingled with, the defect such as folding and peeling carries out reconditioning removal, make the various defects of bar be removed timely, repair, improve the surface quality of subsequent product.
2, the present invention adopt multi-pass, small deformation amount, etc. sizing reduction drawing is carried out to silver-base alloy, improve the technology stability of silver-base alloy bar, stopped the contracting of drawing process footpath, fracture, peeling, folding generation.
3, the present invention is while the excellent finished product of acquisition, substantially increases the yield rate of product, reduces cost.
Below by embodiment, technical scheme of the present invention is described in further detail.
Detailed description of the invention
Embodiment 1
Step one, adopt eddy current inspection to search the AgCu10 rod blank surface defects (pore, be mingled with, the defect such as to fold) of Φ 20mm, the blemish found is removed in reconditioning;
Step 2, swager is adopted to carry out swaging to the silver-base alloy rod base removing blemish in step one, make the head smooth enough ground, avoid producing in drawing process folding, the gross imperfections such as scuffing, then double-strand stretching-machine is adopted to carry out eight passes of drawing to the silver-base alloy rod base after swaging, pass deformation in drawing process is followed successively by 4.9%, 5.1%, 5.2%, 5.3%, 5.5%, 5.6%, 5.8% and 6.0%, every time sizing reduction is 0.5mm, size after every time drawing is followed successively by: Φ 19.5mm, Φ 19mm, Φ 18.5mm, Φ 18mm, Φ 17.5mm, Φ 17mm, Φ 16.5mm, Φ 16mm, scale blocks, obtain the AgCu10 bar that external diameter is Φ 16mm, finished product Surface of Rod Bar unfolded, pore, be mingled with and peeling defect, and scuffing depth of defect and the pit defect degree of depth are all less than 0.03mm.
Embodiment 2
Step one, adopt eddy current inspection to search the AgPb5 rod blank surface defects (pore, be mingled with, fold, the defect such as peeling) of Φ 15mm, the blemish found is removed in reconditioning;
Step 2, swager is adopted to carry out swaging to the silver-base alloy rod base removing blemish in step one, make the head smooth enough ground, avoid producing in drawing process folding, the gross imperfections such as scuffing, then double-strand stretching-machine is adopted to carry out ten passes of drawing to the silver-base alloy rod base after swaging, pass deformation in drawing process is followed successively by 6.6%, 6.8%, 7.0%, 7.3%, 7.5%, 7.8%, 8.2%, 8.5%, 8.9% and 9.3%, every time sizing reduction is 0.5mm, size after every time drawing is followed successively by: Φ 14.5mm, Φ 14mm, Φ 13.5mm, Φ 13mm, Φ 12.5mm, Φ 12mm, Φ 11.5mm, Φ 11mm, Φ 10.5mm, Φ 10mm, scale blocks, obtain the AgPb5 bar that external diameter is Φ 10mm, finished product Surface of Rod Bar unfolded, pore, be mingled with and peeling defect, and scuffing depth of defect and the pit defect degree of depth are all less than 0.03mm.
Embodiment 3
Step one, adopt eddy current inspection to search the AgCu28 rod blank surface defects (pore, be mingled with, the defect such as to fold) of Φ 14.2mm, the blemish found is removed in reconditioning;
Step 2, swager is adopted to carry out swaging to the silver-base alloy rod base removing blemish in step one, make the head smooth enough ground, avoid producing in drawing process folding, the gross imperfections such as scuffing, then double-strand stretching-machine is adopted to carry out ten passes of drawing to the silver-base alloy rod base after swaging, pass deformation in drawing process is followed successively by 6.9%, 7.2%, 7.4%, 7.7%, 8.0%, 8.4%, 8.7%, 9.1%, 9.6% and 10%, every time sizing reduction is 0.5mm, size after every time drawing is followed successively by: Φ 13.7mm, Φ 13.2mm, Φ 12.7mm, Φ 12.2mm, Φ 11.7mm, Φ 11.2mm, Φ 10.7mm, Φ 10.2mm, Φ 9.7mm, Φ 9.2mm, scale blocks, obtain the AgCu28 bar that external diameter is Φ 9.2mm, finished product Surface of Rod Bar unfolded, pore, be mingled with and peeling defect, and scuffing depth of defect and the pit defect degree of depth are all less than 0.03mm.
Embodiment 4
Step one, adopt eddy current inspection to search the AgPb5 rod blank surface defects (pore, be mingled with, the defect such as to fold) of Φ 30mm, the blemish found is removed in reconditioning;
Step 2, swager is adopted to carry out swaging to the silver-base alloy rod base removing blemish in step one, make the head smooth enough ground, avoid producing in drawing process folding, the gross imperfections such as scuffing, then double-strand stretching-machine is adopted to carry out ten passes of drawing to the silver-base alloy rod base after swaging, pass deformation in drawing process is followed successively by 6.6%, 6.8%, 7.0%, 7.3%, 7.5%, 7.8%, 8.2%, 8.5%, 8.9% and 9.3%, every time sizing reduction is 1mm, size after every time drawing is followed successively by: Φ 29mm, Φ 28mm, Φ 27mm, Φ 26mm, Φ 25mm, Φ 24mm, Φ 23mm, Φ 22mm, Φ 21mm, Φ 20mm, scale blocks, obtain the AgPb5 bar that external diameter is Φ 20mm, finished product Surface of Rod Bar unfolded, pore, be mingled with and peeling defect, and scuffing depth of defect and the pit defect degree of depth are all less than 0.05mm.
Embodiment 5
Step one, adopt eddy current inspection to search the AgCu10 rod blank surface defects (pore, be mingled with, the defect such as to fold) of Φ 10mm, the blemish found is removed in reconditioning;
Step 2, swager is adopted to carry out swaging to the silver-base alloy rod base removing blemish in step one, make the head smooth enough ground, avoid producing in drawing process folding, the gross imperfections such as scuffing, then double-strand stretching-machine is adopted to carry out ten passes of drawing to the silver-base alloy rod base after swaging, pass deformation in drawing process is followed successively by 5.9%, 6.1%, 6.3%, 6.5%, 6.7%, 6.9%, 7.2%, 7.5%, 7.7% and 8.1%, every time sizing reduction is 0.3mm, size after every time drawing is followed successively by: Φ 9.7mm, Φ 9.4mm, Φ 9.1mm, Φ 8.8mm, Φ 8.5mm, Φ 8.2mm, Φ 7.9mm, Φ 7.6mm, Φ 7.3mm, Φ 7mm, scale blocks, obtain the AgCu10 bar that external diameter is Φ 7mm, finished product Surface of Rod Bar unfolded, pore, be mingled with and peeling defect, and scuffing depth of defect and the pit defect degree of depth are all less than 0.03mm.
The above; it is only preferred embodiment of the present invention; not any restriction is done to the present invention, every above embodiment is done according to invention technical spirit any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (2)
1. a Hubbing method for great surface quality silver-base alloy bar, is characterized in that, the method comprises the following steps:
Step one, employing eddy current inspection search silver-base alloy rod blank surface defects, and the blemish found is removed in reconditioning;
Step 2, employing swager carry out swaging to the silver-base alloy rod base removing blemish in step one, then multi pass drawing is carried out to excellent base, obtain unfolded, pore, be mingled with and peeling defect, and scuffing depth of defect and the pit defect degree of depth are all less than the silver-base alloy bar of the great surface quality of 0.05mm; Controlling pass deformation in described drawing process is 4.9% ~ 10%, and the sizing reduction controlling every time is 0.5mm.
2. the Hubbing method of a kind of great surface quality silver-base alloy bar according to claim 1, is characterized in that, drawing described in step 2 adopts double-strand stretching-machine.
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| CN201310660900.4A CN103611746B (en) | 2013-12-08 | 2013-12-08 | A kind of Hubbing method of great surface quality silver-base alloy bar |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1403416A (en) * | 1971-11-18 | 1975-08-28 | Mannesmann Meer Ag | Cold drawing machine and a method of conveying and cutting work-pieces |
| CN1278015A (en) * | 1999-06-22 | 2000-12-27 | 章景兴 | Electric contact material alloy based on silver-titanium and prodn. process therefor |
| CN201537630U (en) * | 2009-09-29 | 2010-08-04 | 西部金属材料股份有限公司 | Drawing device of long silver-base alloy bar |
| CN103151115A (en) * | 2013-02-28 | 2013-06-12 | 天恒达电工科技股份有限公司 | Method for producing high-tension copper alloy enameled wire |
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- 2013-12-08 CN CN201310660900.4A patent/CN103611746B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1403416A (en) * | 1971-11-18 | 1975-08-28 | Mannesmann Meer Ag | Cold drawing machine and a method of conveying and cutting work-pieces |
| CN1278015A (en) * | 1999-06-22 | 2000-12-27 | 章景兴 | Electric contact material alloy based on silver-titanium and prodn. process therefor |
| CN201537630U (en) * | 2009-09-29 | 2010-08-04 | 西部金属材料股份有限公司 | Drawing device of long silver-base alloy bar |
| CN103151115A (en) * | 2013-02-28 | 2013-06-12 | 天恒达电工科技股份有限公司 | Method for producing high-tension copper alloy enameled wire |
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Address after: 710201, No. 18, middle section of Jing Gao Bei Road, Jinghe new town, Xi'an economic and Technological Development Zone, Shaanxi, Xi'an Patentee after: Xi'an noble rare metal materials Co., Ltd Address before: 710065 No. three, No. 56, hi tech Zone, Shaanxi, Xi'an Patentee before: XI'AN NUOBOER RARE & NOBLE METAL MATERIALS Co.,Ltd. |
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