CN1544172A - Anchorage device clamping piece blank cold extrusion process - Google Patents
Anchorage device clamping piece blank cold extrusion process Download PDFInfo
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- CN1544172A CN1544172A CNA200310114099XA CN200310114099A CN1544172A CN 1544172 A CN1544172 A CN 1544172A CN A200310114099X A CNA200310114099X A CN A200310114099XA CN 200310114099 A CN200310114099 A CN 200310114099A CN 1544172 A CN1544172 A CN 1544172A
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Abstract
The invention is a cold-extruding technique of semifinished ground tackle clamp pieces, used in prestressed ground tackle systems. Its technical flow: raw material phi20-30 20GmnTi circular stick-cutting by belt saw---burring by a grinder---annealing (at furnace temperature of 550-850 deg.C plus or minus 20 deg.C for at least a hour, cooling under 500deg.C with the furnace and the making air cooling)--phosphatization and saponification--punch molding, and its advantage: because the shape of the semifinished clamp piece is similar to that of the finished clamp piece, it extremely enhances the utilization ratio of the clamp pieces, relatively reduces the mechanically processing quantity, too, thus able to reduce the cost of the clamp pieces by a large margin.
Description
Technical field
The present invention relates to a kind of anchor clipper workblank cold pressing technique that uses in the prestressed anchor system.
Background technology
Pre-stress anchor clipper is a maximum part of quantity in the prestressed anchor system, also be a part of each prestressed anchor manufacturer output maximum simultaneously, up to the present, the method that the production technology of each prestressed anchor manufacturer production pre-stress anchor clipper generally adopts the blanking of round bar band saw and then carries out the machine moulding, this technology amount of machining is big, stock utilization is low, intermediate plate cost height.
Summary of the invention
Purpose of the present invention just provides a kind of cold-stamped technology of taking and prepares the intermediate plate cold extrusion blank similar to the finished product clip shapes, and then the anchor clipper workblank cold pressing technique that carries out the machine moulding.
Solution of the present invention is such:
Choosing round bar gets the raw materials ready back:
(1), blanking, optionally round bar is sawn into Len req;
(2), deburr, beat to the greatest extent blanking fire burr;
(3), annealing, 550 ℃-850 ℃ ± 20 ℃ of furnace temperature down insulation be no less than 1 hour, cool to air cooling below 500 ℃ with the furnace;
(4), phosphatization saponification;
(5), moulding, use the punch ram moulding.
Advantage of the present invention is because intermediate plate cold extrusion blank shape is similar to the finished product clip shapes, so the clip material utilization rate greatly improves, amount of machining also reduces relatively, so just provides possibility for reducing the intermediate plate cost significantly.
The superiority that adopts the cold extrusion blank technology to produce intermediate plate has:
1, stock utilization and saving rate height
(1) with regard to 15 stretch-draw end anchor clipper, adopt the explained hereafter intermediate plate of the blanking of round bar band saw, machine moulding, its stock utilization only is about 32.3%, and the explained hereafter intermediate plate of employing cold extrusion blank, its stock utilization is about 52.2%, and stock utilization has improved about 19.9%.
(2) with regard to 15 stretch-draw end anchor clippers, adopt the explained hereafter intermediate plate of the blanking of round bar band saw, machine moulding, intermediate plate blank weight is 238.6 gram/parts, and adopts the explained hereafter intermediate plate of cold extrusion blank, intermediate plate blank weight is 149 gram/parts, saves material 37.6%.
2, reduced the intermediate plate amount of machining
With regard to 15 stretch-draw end anchor clippers, the intermediate plate cold extrusion blank that adopts us to succeed in developing carries out the machine moulding, has reduced following amount of machining at least: (1) cold extrusion blank both ends of the surface need not turning processing; (2) cold extrusion blank outer conical surface need not turning processing.
3, strengthened the compactness of intermediate plate
Because clip material is through cold extrusion repeatedly, cold-heading, it is more careful, more closely knit that its crystal grain can become, and the intensity of intermediate plate can increase.
Description of drawings
Accompanying drawing is the present invention's shape schematic diagram during the anchor clipper moulding in cold-extrusion technology.
Accompanying drawing 1 is the structural representation of blank after the employing cold extrusion of the present invention.
Accompanying drawing 2 is structural representations that the present invention adopts blank after the preformed.
The specific embodiment
The present invention can adopt the molded technology of once cold extrusion cold extrusion shaped.If press pressure is little, also can adopt the secondary cold-extrusion technology cold extrusion shaped.
One, the molded technology of once cold extrusion:
Choosing round bar gets the raw materials ready back:
(1), blanking, optionally round bar is sawn into Len req;
(2), deburr, beat to the greatest extent blanking fire burr;
(3), annealing, 550 ℃-850 ℃ ± 20 ℃ of furnace temperature down insulation be no less than 1 hour, cool to air cooling below 500 ℃ with the furnace;
(4), phosphatization saponification;
(5), moulding, use the punch ram moulding.
In the present embodiment, getting the raw materials ready is to adopt the pole material 20GmnTi of Φ 20-30 to get the raw materials ready; During blanking, cutting length Φ 26 (+0.4 ,-0.1) * 35.8 (+0.3 ,-0.3) two ends beating degree is not more than 0.6, deburrs with abrasive machine.Annealing process is to be incubated down for 700 ℃ ± 20 ℃ in furnace temperature to be no less than 1 hour, cools to air cooling below 500 ℃ with the furnace, adopts 160 tons of punch rams to become the blank shown in the accompanying drawing 1.
Two, secondary cold extruding formation process:
Choosing round bar gets the raw materials ready back:
(1), blanking, optionally round bar is sawn into Len req;
(2), deburr, beat to the greatest extent blanking fire burr;
(3), annealing, 550 ℃-850 ℃ ± 20 ℃ of furnace temperature down insulation be no less than 1 hour, cool to air cooling below 500 ℃ with the furnace;
(4), phosphatization saponification;
(5), preformed, use punch ram preformed;
(6), annealing, 550 ℃-850 ℃ ± 20 ℃ of furnace temperature down insulation be no less than 1 hour, cool to air cooling below 500 ℃ with the furnace;
(7), phosphatization saponification;
(8), moulding, use the punch ram moulding.
In the present embodiment, getting the raw materials ready is to adopt the pole material 20GmnTi of Φ 20-30 to get the raw materials ready; During blanking, cutting length Φ 26 (+0.4 ,-0.1) * 35.8 (+0.3 ,-0.3) two ends beating degree is not more than 0.6, deburrs with abrasive machine.Described twice annealing technology all is to be incubated down for 700 ℃ ± 20 ℃ in furnace temperature to be no less than 1 hour, cools to air cooling below 500 ℃ with the furnace.The preformed of punching press for the first time adopts 100 tons of punch rams to become structure shown in the accompanying drawing 1; Punching press for the second time adopts 160 tons of punch rams to become the blank shown in the accompanying drawing 1.
In above-mentioned first and second moulding process, the phosphatization saponification can adopt usual manner to carry out, the technological process of phosphatization saponification is in the present embodiment:--descaling bath descaled about 20 minutes--No. 1 water marina groove washing 1 minute that dress 20-30Kg workpiece is gone into the pickling Plastic Drum, the 20-30Kg workpiece that changes the outfit is gone in the phosphatization soap charging box--phosphatization groove phosphatization 10 minutes--No. 2 clear ice grooves 1 minute--neutralisation tank and----molding procedure was sent in blanking--fan dries up--in soap tank saponification (dense) 5 minutes in 1 minute.Workpiece non-oxidation layer and rust staining after the pickling, even film layer after the phosphatization, crystallization is careful, fine and close, is light grey, even film layer after the saponification, feel is satiny, is canescence.
Claims (6)
1, a kind of anchor clipper workblank cold pressing technique is characterized in that choosing round bar and gets the raw materials ready back:
(1), blanking, optionally round bar is sawn into Len req;
(2), deburr, beat to the greatest extent blanking fire burr;
(3), annealing, 550 ℃-850 ℃ ± 20 ℃ of furnace temperature down insulation be no less than 1 hour, cool to air cooling below 500 ℃ with the furnace;
(4), phosphatization saponification;
(5), moulding, use the punch ram moulding.
2, anchor clipper workblank cold pressing technique according to claim 1 is characterized in that:
(1), blanking, optionally round bar is sawn into Len req;
(2), deburr, beat to the greatest extent blanking fire burr;
(3), annealing, 550 ℃-850 ℃ ± 20 ℃ of furnace temperature down insulation be no less than 1 hour, cool to air cooling below 500 ℃ with the furnace;
(4), phosphatization saponification;
(5), preformed, use punch ram preformed;
(6), annealing, 550 ℃-850 ℃ ± 20 ℃ of furnace temperature down insulation be no less than 1 hour, cool to air cooling below 500 ℃ with the furnace;
(7), phosphatization saponification;
(8), moulding, use the punch ram moulding.
3, anchor clipper workblank cold pressing technique according to claim 1 is characterized in that annealing process is to be incubated down for 700 ℃ ± 20 ℃ in furnace temperature to be no less than 1 hour, cools to air cooling below 500 ℃ with the furnace.
4, anchor clipper workblank cold pressing technique according to claim 2 is characterized in that described twice annealing technology all is to be incubated down for 700 ℃ ± 20 ℃ in furnace temperature to be no less than 1 hour, cools to air cooling below 500 ℃ with the furnace.
5, claim 1 or 2 described anchor clipper workblank cold pressing techniques, it is characterized in that getting the raw materials ready is to adopt the pole of Φ 20-30 to get the raw materials ready; During blanking, cutting length Φ 26 (+0.4 ,-0.1) * 35.8 (+0.3 ,-0.3) two ends beating degree is not more than 0.6.
6, anchor clipper workblank cold pressing technique according to claim 5 is characterized in that the pole material 20GmnTi of described Φ 20-30.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310114099 CN1265904C (en) | 2003-11-14 | 2003-11-14 | Anchorage device clamping piece blank cold extrusion process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310114099 CN1265904C (en) | 2003-11-14 | 2003-11-14 | Anchorage device clamping piece blank cold extrusion process |
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| Publication Number | Publication Date |
|---|---|
| CN1544172A true CN1544172A (en) | 2004-11-10 |
| CN1265904C CN1265904C (en) | 2006-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200310114099 Expired - Fee Related CN1265904C (en) | 2003-11-14 | 2003-11-14 | Anchorage device clamping piece blank cold extrusion process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100391689C (en) * | 2005-12-06 | 2008-06-04 | 张有龙 | Method for manufacturing prestress ground tackle clamping piece by hot extrusion |
| CN104439946A (en) * | 2014-11-12 | 2015-03-25 | 重庆理工大学 | Method for forming aluminum alloy conical sheet special-shaped part |
| CN111069320A (en) * | 2019-11-14 | 2020-04-28 | 北京航星机器制造有限公司 | Extrusion forming process method for manufacturing preformed aluminum alloy through local additive manufacturing |
-
2003
- 2003-11-14 CN CN 200310114099 patent/CN1265904C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100391689C (en) * | 2005-12-06 | 2008-06-04 | 张有龙 | Method for manufacturing prestress ground tackle clamping piece by hot extrusion |
| CN104439946A (en) * | 2014-11-12 | 2015-03-25 | 重庆理工大学 | Method for forming aluminum alloy conical sheet special-shaped part |
| CN111069320A (en) * | 2019-11-14 | 2020-04-28 | 北京航星机器制造有限公司 | Extrusion forming process method for manufacturing preformed aluminum alloy through local additive manufacturing |
| CN111069320B (en) * | 2019-11-14 | 2022-04-05 | 北京航星机器制造有限公司 | Extrusion forming process method for manufacturing preformed aluminum alloy through local additive manufacturing |
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| Publication number | Publication date |
|---|---|
| CN1265904C (en) | 2006-07-26 |
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