CN102554086A - Hot-forging closed forward extrusion method for nine-hole circular anchor ring - Google Patents
Hot-forging closed forward extrusion method for nine-hole circular anchor ring Download PDFInfo
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- CN102554086A CN102554086A CN2012100139246A CN201210013924A CN102554086A CN 102554086 A CN102554086 A CN 102554086A CN 2012100139246 A CN2012100139246 A CN 2012100139246A CN 201210013924 A CN201210013924 A CN 201210013924A CN 102554086 A CN102554086 A CN 102554086A
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Abstract
The invention discloses a hot-forging closed forward extrusion method for a nine-hole circular anchor ring. The method comprises the following steps of: blanking a circular steel billet, of which the section has a diameter of 80 mm, to obtain a blank, of which the section has a diameter of 80 mm and which is 172.5 mm high; removing burrs from the blank; heating the blank at the temperature of between 1,080 and 1,120 DEG C for 4 to 6 minutes; upsetting the heated blank to obtain a blank, which is 54 mm high and of which the section has a diameter of less than 145 mm; putting the upset blank into a female die of a forming mold, and pressing the blank by a male die to obtain a circular anchor ring forge piece; putting the circular anchor ring forge piece into a material box for cooling; taking out the circular anchor ring forge piece from the material box, and removing scale from the cooled circular anchor ring forge piece by shot blasting; and inspecting the circular anchor ring forge piece, and thus obtaining the nine-hole circular anchor ring which meet a required standard. The hot-forging closed forward extrusion method is used for forging the circular anchor ring, is convenient to operate, and the raw materials are saved, the cost is reduced, and the yield can be increased.
Description
Technical field
The present invention relates to metallurgical technology field, specifically is the forging method of nine hole circle anchor circle forge hot enclosed forward extrusions.
Background technology
In order to strengthen the structure of high-speed railway, highway and bridge, in the pre-stress system of high-speed railway, highway and bridge, usually steel strand wires are fixed through nine hole circle anchor circles.Nine hole circle anchor circle holes are many and dark; Forge hot nine hole circle anchor circles all adopt loose tool to forge solid forging at present; Hole on solid forging through bradawl flower or taper reamer and obtain having nine hole circle anchor circles of endoporus, adopt existing method to process nine hole circle anchor circles, difficulty of processing is big; Yield rate is low, thereby is prone to cause the wasting of resources.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, a kind of easy to operate, nine hole circle anchor circle forge hot enclosed forward extrusion forging methods of saving raw material, reduce cost and can improving yield rate are provided.
The object of the invention is mainly realized through following technical scheme: the forging method of nine hole circle anchor circle forge hot enclosed forward extrusions may further comprise the steps:
(a) blanking, detailed process are to be that the round steel blank blanking of 80mm obtains diameter of section and is 80mm, highly is the blank of 172.5mm with diameter of section;
(b) deburring, detailed process are that the burr on the blank is removed;
(c) heating, detailed process is under 1080 ~ 1120 ℃, blank to be heated 4 ~ 6min;
(d) jumping-up, detailed process are the blank after the heating to be carried out jumping-up obtain high 54mm, the diameter of section blank less than 145mm that is;
(e) be shaped, detailed process is the blank behind the jumping-up to be put into the die of shaping dies, drives the punch of shaping dies through the friction press slide block, and presses down blank through punch and obtain circle anchor circle forging;
(f) cooling, detailed process is that circle anchor circle forging is placed in the hopper, and in static air, cools off;
(g) ball blast, detailed process are that the round anchor circle forging in the hopper is taken out, and remove through the oxide skin that ball blast will cool off on the circle anchor circle forging of back;
(h) check, detailed process are that circle anchor circle forging is tested, and obtain meeting nine hole circle anchor circles of demanding criteria.Wherein, punch accomplish under the drive of friction press slide block press down or on carry, before ball blast,, also can remove the burr on the round anchor circle forging for the ease of operation.
Also comprise on the inspection blank whether scabbing in the said step (b), and to having the removal that scabs on the blank that scabs.
Heating-up temperature in the said step (c) is 1100 ℃, and be 5min heat time heating time.
Said step (e) may further comprise the steps:
(e1) whether the punch and the die of inspection shaping dies align; Whether gapped between the cushion faces; If punch and die does not align or cushion faces between exist the gap then to adjust accordingly, thereby punch and die are aligned, and make and do not have the gap between the cushion faces;
(e2) shaping dies is preheated to 200 ~ 300 ℃;
(e3) blank behind the jumping-up is put into die, drive the punch of shaping dies, and press down blank through punch and obtain circle anchor circle forging, take out circle anchor circle forging then through the friction press slide block;
(e4) through graphite solution shaping dies is cooled off and lubricates.Forming process is on friction press, to carry out, and in order to guarantee the friction press blow energy, the accumulation of energy time of the frictional disk of friction press and flywheel should transfer to 20 ~ 22s.
Said step (e3) also comprises the height and the position degree of hole dimension and Kong Yukong of inspection circle anchor circle forging, and when the defective round anchor circle forging of discovery, shaping dies is overhauled.For the complexity that in the continued operation process, reduces to operate; In the step (e3) inspection of circle anchor circle forging can every 30min be carried out once or 60 round anchor circle forging of every production carry out once; Certainly, when finding that circle anchor circle forging is defective, need the round anchor circle forging of producing in inspection intervals 30min or 60 is isolated; Examine entirely after cooling, and underproof round anchor circle forging is reprocessed.
The graphite and the water of graphite solution are configured by weight 1:10 in the said step (e4).Wherein, the graphite in the graphite solution is mainly used in lubricated, and water is mainly used in cooling.
The time of cooling and lubricated shaping dies is greater than 5s in the said step (e4).The cooling of shaping dies and lubrication time so, can guarantee shaping dies sufficient lubrication and cooling greater than 5s.
The number of plies that is layered in the round anchor circle forging in each hopper in the said step (f) should be less than 10 layers.The present invention limits the number of plies of the round anchor circle forging that piles up in the hopper, its objective is that the round anchor circle forging of lower floor was out of shape because of load-bearing is too heavy when the number of plies of the round anchor circle forging that in hopper, piles up was too high.
Require circle anchor circle forging is tested according to blank drawing and GB/T12362 micron order in the said step (h).Wherein, blank drawing mainly reflects the design parameter of round anchor circle, and like wide, the height and the position degree of circle anchor circle, the GB/T12362 micron order requires then the performance parameter for the concrete material of inspection circle anchor circle.
The position degree of the nine hole circle anchor circle Kong Yukong that inspection obtains in the said step (h) should be less than 0.3mm, and grain size should be the 5-9 level.
Compared with prior art, the present invention has following beneficial effect: when the present invention forged nine hole circle anchor circles, the forming process of nine hole circle anchor circles was carried out through the method for enclosed, forge hot, forward extrusion; Nine endoporus of nine hole circle anchor circles can once forge in shaping dies, and are easy to operate and can improve yield rate, because of the present invention through jumping-up with press down processing; Micron order can satisfy the demands, and external diameter does not need processing, so; Can avoid the waste of material of holing and being caused; Approximately can save the blank of raw material 2kg, the nine hole circle anchor circles that the present invention generates can avoid slightly boring endoporus, so reduce the expense in the thick burr-drill of machined hole.
Description of drawings
Fig. 1 is the process chart of the embodiment of the invention;
Fig. 2 is the vertical profile TV structure sketch map of nine hole circle anchor circles of employing the present invention forging;
Fig. 3 is the plan structure sketch map of nine hole circle anchor circles of employing the present invention forging;
Fig. 4 is the structural representation of used shaping dies in the forming process of the present invention.
The pairing name of Reference numeral is called in the accompanying drawing: 1, lower bolster, 2, connecting plate, 3, die supporter, 4, die; 5, core rod, 6, circle stress, 7, lower push rod, 8, upper ejector pin; 9, die holder, 10, cope match-plate pattern, 11, punch, 12, punch case; 13, jumping-up patrix, 14, the jumping-up counterdie, 15, die-cushion under the jumping-up, 16, water pipe head.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is done further detailed description, but embodiment of the present invention is not limited thereto.
As shown in Figure 1, the forging method of nine hole circle anchor circle forge hot enclosed forward extrusions comprises following processing step: blanking, deburring, heating, jumping-up, shaping, cooling, ball blast and check.Wherein, the detailed process of blanking is: be that the round steel blank of 80mm obtains diameter of section through the sawing machine blanking and is 80mm, high is the blank of 172.5mm with diameter of section.The detailed process of deburring is: whether the burr of blanking being used to of obtaining being made on the blank of nine hole circle anchor circles is removed through abrasive machine, scab on the inspection blank, and remove through file having scabbing on the blank.The detailed process of heating is: the temperature in the heating in medium frequency stove is transferred to 1080 ~ 1120 ℃, blank is put to the heating in medium frequency stove heated 4 ~ 6min, wherein preferred heating-up temperature is 1100 ℃, and be 5min heat time heating time.The detailed process of jumping-up is: the blank after will heating carries out jumping-up and obtains high 54mm, the diameter of section blank less than 145mm that is under the effect of 400 tons of punch presses.
The detailed process that is shaped is: whether the punch and the die of inspection shaping dies align; Whether gapped between the cushion faces; If punch and die does not align or cushion faces between exist the gap then to adjust accordingly, thereby punch and die are aligned, and make and do not have the gap between the cushion faces; Shaping dies is preheated to 200 ~ 300 ℃ and no-load running twice; Blank behind the jumping-up is put into die with clamp; Drive the punch of shaping dies through the friction press slide block; And press down blank through punch and obtain circle anchor circle forging; Take out circle anchor circle forging then, the height and the position degree of hole dimension and Kong Yukong of inspection circle anchor circle forging, and when the defective round anchor circle forging of discovery, shaping dies is overhauled; Weight ratio through graphite and water is that the graphite solution of 1:10 cools off and lubricates shaping dies, and the time that makes cooling and lubricated shaping dies is greater than 5s.The detailed process of cooling is: will justify anchor circle forging and be placed in the hopper, and in static air, cool off, wherein, the number of plies that is layered in the round anchor circle forging in each hopper should be less than 10 layers.
The detailed process of ball blast is: the round anchor circle forging in the hopper is taken out, remove through the oxide skin that ball blast will cool off on the circle anchor circle forging of back.The detailed process of check is: require circle anchor circle forging is tested according to blank drawing and GB/T12362 micron order; Obtain meeting nine hole circle anchor circles of demanding criteria; The position degree of the nine hole circle anchor circle Kong Yukong that inspection obtains should be less than 0.3mm, and grain size should be the 5-9 level.Wherein, blank drawing mainly reflects the design parameter of round anchor circle, like wide, the height and the position degree equidimension of circle anchor circle.
Like Fig. 2 and shown in Figure 3, wherein, Fig. 2 is the sectional structure sketch map of nine hole circle anchor circles of employing the present invention forging, and it has mainly embodied the structure in the hole of the nine hole circle anchor circles that adopt the present invention's forging, and its endoporus is a taper hole; Fig. 3 is the plan structure sketch map of nine hole circle anchor circles of employing the present invention forging, and it has embodied the distribution in nine hole circle anchor circle holes.
As shown in Figure 4, realize the shaping dies that forming process of the present invention was applied to, comprise lower bolster 1, connecting plate 2, die supporter 3, die 4, core rod 5, circle stress 6, lower push rod 7, upper ejector pin 8, die holder 9, cope match-plate pattern 10 and punch 11; Wherein, Connecting plate 2 is connected in the upper surface of lower bolster 1, and die supporter 3 is arranged on the upper surface of connecting plate 2, and die 4 is arranged on the upper surface of die supporter 3 and constitutes die cavity with die supporter 3; Core rod 5 is positioned at die cavity and is fixed on the die supporter 3; The die cavity open upper end, punch 11 is connected in the lower surface of cope match-plate pattern 10, and punch 11 lower ends are corresponding with die cavity open upper end position, the size coupling.Circle stress 6 and die holder 9 all are connected in the upper surface of connecting plate 2, and die supporter 3 all is embedded in the circle stress 6 with die 4, and circle stress 6 embeds in the die holders 9 and with die holder 9 and is connected.Upper ejector pin 8 is connected in lower push rod 7 upper ends, and lower bolster 1 and die supporter 3 are passed in the upper end of upper ejector pin 8, and so, the forging after being convenient to will be shaped through upper ejector pin ejects.
Lower bolster 1 upper surface is connected with jumping-up counterdie 14; Be provided with die-cushion 15 under the jumping-up between jumping-up counterdie 14 and the lower bolster 10; Die-cushion 15 adopts the rubber-like cushion to constitute under the jumping-up, and cope match-plate pattern 10 lower surfaces are connected with the jumping-up patrix 13 corresponding with jumping-up counterdie 14 positions.The present invention makes this shaping dies under the mating reaction of 400 tons of punch presses, can accomplish the function of jumping-up through jumping-up patrix 13 and jumping-up counterdie 14.Punch 11 outer walls are arranged with punch case 12; Punch case 12 is connected in the lower surface of cope match-plate pattern 10; Punch case 12 constitutes the water flowing runner that both ends open lays respectively at punch case 12 inside and outside two sides, and punch case 12 lateral walls are connected with the water pipe head 16 of connecting this water flowing runner, water pipe head 16 external cooling systems; Cooling fluid can adopt graphite and water to carry out the graphite solution that proportioning obtains in the cooling system, is convenient to outer input graphite solution through water pipe head 16 and comes shaping dies is cooled off.
The invention is not restricted to the forging of nine hole circle anchor circles, when forging the round anchor circle in different holes, punch 11, die 4, die supporter 3 and core rod 5 are selected according to the size and the hole count of concrete round anchor circle.
As stated, then can well realize the present invention.
Claims (10)
1. the forging method of nine hole circle anchor circle forge hot enclosed forward extrusions is characterized in that, may further comprise the steps:
(a) blanking, detailed process are to be that the round steel blank blanking of 80mm obtains diameter of section and is 80mm, highly is the blank of 172.5mm with diameter of section;
(b) deburring, detailed process are that the burr on the blank is removed;
(c) heating, detailed process is under 1080 ~ 1120 ℃, blank to be heated 4 ~ 6min;
(d) jumping-up, detailed process are the blank after the heating to be carried out jumping-up obtain high 54mm, the diameter of section blank less than 145mm that is;
(e) be shaped, detailed process is the blank behind the jumping-up to be put into the die of shaping dies, drives the punch of shaping dies through the friction press slide block, and presses down blank through punch and obtain circle anchor circle forging;
(f) cooling, detailed process is that circle anchor circle forging is placed in the hopper, and in static air, cools off;
(g) ball blast, detailed process are that the round anchor circle forging in the hopper is taken out, and remove through the oxide skin that ball blast will cool off on the circle anchor circle forging of back;
(h) check, detailed process are that circle anchor circle forging is tested, and obtain meeting nine hole circle anchor circles of demanding criteria.
2. the forging method of nine hole circle anchor circle forge hot enclosed forward extrusions according to claim 1 is characterized in that, also comprises in the said step (b) on the inspection blank whether scabbing, and to having the removal that scabs on the blank that scabs.
3. the forging method of nine hole circle anchor circle forge hot enclosed forward extrusions according to claim 1 is characterized in that the heating-up temperature in the said step (c) is 1100 ℃, and be 5min heat time heating time.
4. the forging method of nine hole circle anchor circle forge hot enclosed forward extrusions according to claim 1 is characterized in that said step (e) may further comprise the steps:
(e1) whether the punch and the die of inspection shaping dies align; Whether gapped between the cushion faces; If punch and die does not align or cushion faces between exist the gap then to adjust accordingly, thereby punch and die are aligned, and make and do not have the gap between the cushion faces;
(e2) shaping dies is preheated to 200 ~ 300 ℃;
(e3) blank behind the jumping-up is put into die, drive the punch of shaping dies, and press down blank through punch and obtain circle anchor circle forging, take out circle anchor circle forging then through the friction press slide block;
(e4) through graphite solution shaping dies is cooled off and lubricates.
5. the forging method of nine hole circle anchor circle forge hot enclosed forward extrusions according to claim 4; It is characterized in that; Said step (e3) also comprises the height and the position degree of hole dimension and Kong Yukong of inspection circle anchor circle forging, and when the defective round anchor circle forging of discovery, shaping dies is overhauled.
6. the forging method of nine hole circle anchor circle forge hot enclosed forward extrusions according to claim 4 is characterized in that, the graphite and the water of graphite solution are configured by weight 1:10 in the said step (e4).
7. the forging method of nine hole circle anchor circle forge hot enclosed forward extrusions according to claim 4 is characterized in that, the time of cooling and lubricated shaping dies is greater than 5s in the said step (e4).
8. according to the forging method of described any the nine hole circles anchor circle forge hot enclosed forward extrusion of claim 1～7, it is characterized in that the number of plies that is layered in the round anchor circle forging in each hopper in the said step (f) should be less than 10 layers.
9. according to the forging method of described any the nine hole circles anchor circle forge hot enclosed forward extrusion of claim 1～7, it is characterized in that, require circle anchor circle forging is tested according to blank drawing and GB/T12362 micron order in the said step (h).
10. the forging method of nine hole circle anchor circle forge hot enclosed forward extrusions according to claim 9 is characterized in that, the position degree of the nine hole circle anchor circle Kong Yukong that inspection obtains in the said step (h) should be less than 0.3mm, and grain size should be the 5-9 level.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100139246A CN102554086A (en) | 2012-01-17 | 2012-01-17 | Hot-forging closed forward extrusion method for nine-hole circular anchor ring |
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| CN2012100139246A CN102554086A (en) | 2012-01-17 | 2012-01-17 | Hot-forging closed forward extrusion method for nine-hole circular anchor ring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109047633A (en) * | 2018-08-16 | 2018-12-21 | 长春莅洋汽车零部件有限公司 | Four station flange shaft forging molds of one kind and its forging method |
| CN109158836A (en) * | 2018-09-14 | 2019-01-08 | 昆山众诚精密锻造有限公司 | A kind of long axis steering arm containing pass and its precise forming technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109047633A (en) * | 2018-08-16 | 2018-12-21 | 长春莅洋汽车零部件有限公司 | Four station flange shaft forging molds of one kind and its forging method |
| CN109158836A (en) * | 2018-09-14 | 2019-01-08 | 昆山众诚精密锻造有限公司 | A kind of long axis steering arm containing pass and its precise forming technique |
| CN109158836B (en) * | 2018-09-14 | 2020-09-22 | 昆山众诚精密锻造有限公司 | Long-shaft hole-containing steering arm and precision forming process thereof |
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Inventor after: Huang Jiping Inventor after: Luo Yuanyuan Inventor after: Feng Kemin Inventor after: Wang Tao Inventor after: Zhang Youming Inventor after: Li Shikuan Inventor after: Liao Mao Inventor after: Dong Xingming Inventor after: Pan Feng Inventor after: Wen Yimin Inventor before: Huang Jiping Inventor before: Luo Yuanyuan Inventor before: Feng Kemin Inventor before: Wang Tao Inventor before: Zhang Youpeng Inventor before: Li Shikuan Inventor before: Liao Mao Inventor before: Dong Xingming Inventor before: Pan Feng Inventor before: Wen Yimin |
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Free format text: CORRECT: INVENTOR; FROM: HUANG JIPING FENG KEMIN WANG TAO ZHANG YOUPENG LI SHIKUAN LIAO MAO DONG XINGMING PAN FENG WEN YIMIN LUO YUANYUAN TO: HUANG JIPING FENG KEMIN WANG TAO ZHANG YOUMING LI SHIKUAN LIAO MAO DONG XINGMING PAN FENG WEN YIMIN LUO YUANYUAN |
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Application publication date: 20120711 |